• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    CLAMP DEVICE. It is a clamp device for developing a relatively greater flange grip force than the previous one with a relatively lower nut clamp torque than that provided previously. A main clamp body (10) includes an elongated clamping groove (13) of a U or V shaped cross-section delimited by a pair of groove-forming wall sections. The main clamp body has a ring shape when the screw (22) and the nut (23) are mounted in position on the lobe parts (15) arranged facing each other. Each of the lobe parts (15) includes the pair of side wall sections (51) adjoining respectively the pair of bounding wall sections that delimit the clamping groove (13). Each lobe part also includes a curved outer end wall section (52) that interconnects the pair of side wall sections at an outer end of each lobe part and a seat surface wall section (53) contiguous to the pair side wall sections and the outer end wall section.
    公开号:BR112014033007B1
    申请号:R112014033007-7
    申请日:2013-07-11
    公开日:2020-11-03
    发明作者:Katsuya Sato
    申请人:Aisin Takaoka Co., Ltd.；
    IPC主号:
    专利说明:

    Technique Field Cross Reference to Related Orders
    [0001] This application claims priority based on Patent Application No. JP 2012-164777 filed in Japan on July 25, 2012, the full description of which is incorporated into this Application for reference in its entirety.
    [0002] The present invention relates to a clamp device that includes a substantially ring or C-shaped main body, a screw and a nut, the ring-shaped main body including a pair of elongated grooved parts that have , each, a cross-section shaped in U or V. By screwing the screw and the nut, a gripping force can be exerted on objects placed for gripping within the grooved parts of the clamping. Background
    [0003] The clamp device mentioned above is used to interconnect pipe components in an exhaust system for an automotive engine, as an example (among others, the pipe components for a turbocharger). Until then, several sets of relevant procedures have been applied for utility model or patent. Examples of such sets of procedures include "Clamp for superchager" revealed in Patent Literature 1, "Fixed bolt type coupling" revealed in Patent Literature 2 and "Ring-shaped clamp" revealed in Patent Literature 3. In particular, the basic structure of the ring-shaped clamp, disclosed in Patent Literature 3, is quite similar to the structure of the clamp device which is indicated in the present document in Figure 1 to Figure 3 and which is referred to in the present document as Comparative Example (Example of Related Art ). Then, the clamp device (Comparative Example) shown in the present document in Figures 1 to 3 will be illustrated instead of discussing a set of procedures in the related technique.
    [0004] With reference to Figures 1 to 3, the clamp device, to which the present invention is to be compared, includes a main clamp body 10, a connecting ring 21, a screw 22 and a nut 23. The body of main clamp 10 consists of the pair of upper and lower clamp members 11, 12. The upper clamp member 11, that is, a first clamp member and the lower clamp member 12, that is, a second clamp member, they are shaped in a semi-square manner. Each of the first and second clamp members has the inner edge side thereof formed with an elongated clamping groove 13 that has a U-shaped or V-shaped cross section. Each of the first and second clamp members 11.12 includes a twisted part 14 at one end thereof, while including a lobe part 15 at the opposite end thereof. The twisted part 14 of the first clamp member 11 and the twisted part 14 of the second clamp member 12 are interconnected by the connecting ring 21, so that the two clamp members 11, 12 can be rotated relative to each other, i.e. it is moved in an opening or closing direction, around an interconnection location such as the center of rotation. With the lobe part 15 of the first clamp member 11 (first lobe part) located in a facing relationship and in proximity to the lobe part 15 of the second clamp member 12 (second lobe part), the clamp body 10, consisting of the two clamp members, it has a C-shape when viewed from the front side. In this Comparative Example, the screw 22 has its head welded to the first lobe part, at the same time that it has its stem passed through a through hole, not shown, drilled in the second lobe part. The nut 23 is screwed into a portion of the screw rod 22 projected from the underside of the lobe part, whereby the main clamp body 10, as a whole, is shaped toroidally when viewed from the side front.
    [0005] As can be seen from Figures 1 to 3, each of the first and second lobe parts 15 includes a pair of side wall sections 31, an outer end wall section 32 and a wall section seat surface 33. The outer end wall section is straight (flat) and interconnects the pair of side wall sections 31 to an extreme (remote) outer end of the lobe part. The seat surface wall section, formed contiguous with both the pair of side wall sections 31 and the outer end wall section 32, provides a seating surface for screw 22 or nut 23. In addition, a fulcrum part 34 is formed, rectangular in shape when viewed in a flat view, extending from the bottom or top side of the straight-shaped outer end wall section 32 of each of the lobe parts 15. This part of fulcrum 34 is formed by "folding work" by a press at the time of press forming of each of the lobe parts 15 of the clamp members.
    [0006] Referring to Figure 4, for example, in the use of the clamp device, a flange 41 f of a first pipe component 41 and a flange 42f of a second pipe component 42 are placed in contact with each other. In this state, the main clamp body 10 is fitted over the outer surface sides of flange 41 f of the first pipe component 41 and flange 42f of the second pipe component 42. The nut 23 is then engaged with the screw stem 22 of the clamp device to be tightened. Thus, the toroidally shaped main clamp body 10 is gradually reduced in diameter, with the connection flanges (41 f, 42f) progressively penetrating the interior of the clamping grooves 13 of the main clamp body 10. Concomitantly, if, on flanges 41, 42, a tightening torque (flange gripping force F) in a reinforcing direction of the connection between the two flanges 41, 42 (in the horizontal direction in Figure 4), thereby stapling tightly the flanges together by the clamp device. Citation List Patent Literature PTL 1: Utility Model Published under n2JPU59-67538A (Figure 3, Figure 4) PTL 2: Patent Launched under n2 JP7-233888A (Figure 7, Figure 8) PTL 3: Published Patent n2 JP2008-202791A summary Technique Problem
    [0007] The descriptions of the Patent Literature mentioned above and the Non-Patent Patent Literature are hereby incorporated by reference.
    [0008] The following analysis is determined by the present invention.
    [0009] In the clamp device of the Comparative Example (Related Art procedure sets), the flange gripping force F may not be of sufficient value compared to the magnitude of the nut tightening torque. Therefore, the exhaust gas leak may not be completely excluded. An operator on the job site can then be forced to use a nut tightening torque that must be large enough to develop a sufficiently large flange gripping force. However, excessive nut tightening torque tends to cause the following inconveniences (failures or defects):
    [0010] (1) Each lobe part of the main clamp body may not be able to sustain the axial force exerted by the nut and bolt, so that the seat surface wall section 33 of each lobe part towards the screw or nut may be subject to plastic deformation.
    [0011] (2) If the seat surface wall section 33 of the lobe part is subject to plastic deformation, the developed flange gripping force F may not be as high as expected although a large axial force is exerted on the screw and the nut. Therefore, in an attempt to develop a greater F-flange grip force, a person may fall into a vicious cycle from (1) to (2), then back to (1), then back to (2) and so on. Finally, the flange gripping force may not be stabilized, with the flange gripping operation being only poor in reproducibility and reliability.
    [0012] (3) Furthermore, if, in an attempt to develop an F-flange gripping force that has the capacity to steadily support a mechanical force inevitably inflicted from the outside, such as vibrations, a force exerted in a axial on the screw and the door is increased, the screw can be bent under the excessive axial force exerted. In such a case, the appropriate functions for the clamp device may be lost.
    [0013] Therefore, there is a need in the technique to overcome the inconveniences mentioned above. A main object of the present invention is to provide a clamp device that can develop a relatively greater flange gripping force than the previous one by a relatively less nut tightening torque than the previous one. Solution to the Problem Analysis of Causes of Problems in the Comparative Example (Related Technique Example)
    [0014] The present inventors studied the possible causes of plastic deformation of the seat surface wall section 33 of the lobe part caused under the axial force exerted by the screw / nut. It was concluded that the cause for the tendency to plastic deformation mentioned above does not lie in the thickness adjustment of the seat surface wall section 33, the outer end wall section 32 or the side wall sections 31 of the lobe parts, however, preferably, in a low tenacity in the formed fulcrum parts 34 that project from the outer end wall section 32. That is, in this type of clamp device, a "fulcrum point" is formed by the parts of fulcrum 34 of the two lobe parts that support each other by screwing the nut against the screw rod. Through the fulcrum parts of the two lobe parts, which then support each other and probing to be the fulcrum point for the annular clamp device, the nut bolting operation itself is transferred to the action of reducing the diameter of the main clamp body, thus developing the flange gripping force F. In the clamp device of the Comparative Example, the fulcrum parts 34 of the lobe parts are low in toughness. Therefore, as the nut tightening torque increases, the fulcrum parts are the first to be subject to plastic deformation. The influence of the plastic deformation produced in each part of fulcrum 34 is propagated, relatively at an early stage, to the outer end wall sections 32 of the lobe parts and to the seat surface wall section 33, thus inducing the plastic deformation of the seat surface wall section 33 and so on. In other words, the plastic deformation in the seat surface wall section 33 is instigated by that in the fulcrum parts 34.
    [0015] On the other hand, the outer end wall sections 32 that interconnect the pair of side wall sections in the lobe parts are straight in shape and are at right angles to the side wall sections. Therefore, the outer end wall sections 32 alone are not contributing to the increase in toughness of the fulcrum parts 34. In more concrete terms, the relationship between the outer end wall sections 32 and the fulcrum parts 34 and that between the outer end wall sections 32 and the side wall sections 31 in the Comparative Example are not such that they will directly induce any positive synergistic effects that result from the interconnection of the two portions. That is, these portions may not be closely and structurally correlated with each other in such a way that they mutually improve their mechanical toughness. The implicit meaning of the aforementioned will become clearer as the present description progresses.
    [0016] Based on the above analysis, the present invention, as now described, has been completed. Present invention
    [0017] In a clamp device, according to the present invention, a main clamp body includes a pair of clamping grooves in which each is bounded (defined) by a pair of groove boundary wall sections, being that the elongated clamping grooves each have a U- or V-shaped cross-section. The main clamp body also includes the first and second lobe parts disposed in close proximity to ex-tremendous parts of the clamping grooves. The main clamp body has a ring shape when a screw and a nut are mounted in position on the lobe parts arranged facing each other. When the bolt and nut are screwed in relation to each other, a force is produced to hold together at least two objects placed within the clamping grooves.
    [0018] Each of the first and second lobe parts comprises: a pair of side wall sections respectively contiguous to the pair of groove boundary wall sections that delimit the clamping groove. Each of the first and second lobe parts also includes a curved outer end wall section that interconnects the pair of side wall sections at an outer end of each lobe part and a seat surface wall section contiguous to the pair of side wall sections and the outer end wall section. The seat surface wall section provides a seating surface for the bolt or nut. An arcuously shaped fulcrum part is formed in the curved outer end wall section of each lobe part so as to extend along a direction of curvature of the outer end wall section.
    [0019] According to the present invention, the outer end wall section of the main clamp body, which interconnects the paired side wall sections that make up the lobe parts, is curved in shape. An arcuate shaped fulcrum portion is formed in the curved outer end wall section so as to extend along the direction of curvature thereof. As a result of this configuration, the arcuately shaped fulcrum part of the present invention is drastically improved in toughness, compared to the conventional rectangular shaped fulcrum part that extends from the straight-shaped outer end wall section in the form of a projection. Since the outer end wall section is curved, the load supported by the arcuate shaped fulcrum parts can be distributed in a straight manner between the two side wall sections without difficulty. Therefore, the lobe parts, as a whole, can be improved in toughness. As a result, although an excessive tightening torque is exerted during a nut tightening, the arcuate shaped fulcrum part is not readily subjected to plastic deformation and, consequently, the lobe parts, among others, the wall surface sections settlement, are not readily subjected to plastic deformation. Consequently, a large flange gripping force can be developed with less nut tightening torque.
    [0020] In the clamp device, according to the present invention, it is preferred that both end portions of the arcuate shaped fulcrum parts extend and be integrated into the pair of side wall sections. With such a configuration, not only the fulcrum points shaped in an arcuate manner, but also the entire lobe parts can be improved in toughness, thereby further increasing the advantageous effects of the present invention. Supplementary Notes
    [0021] Additional preferred modes or additional constituent elements of the present invention will now be enumerated.
    [0022] The main clamp body includes the first and the second clamp members formed in a semi-square manner. The first and second clamp members are provided at one end thereof with connecting portions and at the opposite ends with lobe parts. The connection portion of the first clamp member is connected by means of connection to the connection portions of the second clamp member. In this way, the main clamp body can carry out an opening / closing movement around the connection site through the connection means mentioned above as a center. Advantageous Effects of the Invention
    [0023] With the clamp device of the present invention, a relatively greater flange gripping force than the previous one can be produced by a lower nut tightening torque than the previous one. Brief Description of Drawings
    [0024] Figure 1 is a perspective view showing a clamp device of a Comparative Example (set of procedures of the related technique).
    [0025] Figure 2 is a front view showing the clamp device of the Comparative Example (set of procedures of the related technique).
    [0026] Figure 3 (A) is a plan view (top plan view) showing the clamp device of the Comparative Example.
    [0027] Figure 3 (B) is an enlarged cross-sectional view taken along line B-B of Figure 2.
    [0028] Figure 4 is a schematic cross-sectional view illustrating the way in which two flanges are fastened together by the clamp device.
    [0029] Figure 5 is a perspective view showing the clamp device of an Example of the present invention.
    [0030] Figure 6 is a front view showing the example clamp device of the present invention (before gripping).
    [0031] Figure 7 (A) is a plan view (top plan view) of the Example clamp device of the present invention.
    [0032] Figure 7 (B) is an enlarged cross-sectional view taken along line B'-B 'of Figure 6.
    [0033] Figure 8 is a front view showing the example clamp device of the present invention (after gripping).
    [0034] Figure 9 is a graph showing the relationship between the nut tightening torque and the flange grip force in the Example and in the Comparative Example. Description of Modalities
    [0035] Now, an Example of the present invention will be described with reference to the drawings.
    [0036] With reference to Figures 5 to 8, a clamp device of the present Example includes a main clamp body 10, a connection ring 21, as a connection means, a screw 22 and a nut 23. The clamp body main is constructed by the first and second clamp members 11, 12. The first clamp member 11 is an upper clamp member and the second clamp member 12 is a lower clamp member. Each of the first and second clamp members 11, 12 is shaped in a semi-square manner and includes, on the inner edge side, an elongated clamping groove 13 that has a U-shaped or V-shaped cross-section. It is noted that the elongated clamping groove 13 of the main clamp body 10 is defined, that is, delimited, by a pair of groove forming wall sections 17, 18 belonging to the clamp members, as shown in Figure 4.
    [0037] Each of the first and second clamp members (or pieces) 11, 12 includes, at one end of it, the twisted part 14, as a connecting section, while including, at the opposite end of it, a lobe part 15. The twisted part 14 of the first clamp member 11 and the twisted part 14 of the second clamp member 12 are interconnected by the aforementioned connection ring 21, so that the two clamp members are rotated relative to each other, that is, moved in a direction of opening or closing of the clamp members, around a location of the interconnection by the connecting ring 21 as a center of rotation.
    [0038] With the lobe part 15 of the first clamp member 11 (first lobe part) located in a facing relationship and in proximity to the lobe part 15 of the second clamp member 12 (second lobe part), the body of clamp 10, consisting of the two clamp members, interconnected by the connection ring 21, has a C-shape when viewed from the front side (see Figure 6). In the present Example, screw 22 has its head attached to the first lobe part by welding, while having its stem passed through a hole, not shown, drilled through the second lobe part (see Figures 5 and 6). Nut 23 is screwed into a (threaded) portion of the screw rod 22 projected from the underside of the second lobe part, whereby the main clamp body 10, in general, has a substantially toroidal shape when viewed from the front side (see Figure 8).
    [0039] With reference to Figures 5 to 7, the first and second lobe parts 15 are projected radially outward, respectively, from the end parts of the main clamp body substantially toroidally shaped 10. Each lobe part 15 includes a pair of side wall sections 51, a curved outer end wall section 52, a seat surface wall section 53 and an arcuously shaped fulcrum part 54.
    [0040] The pair of side wall sections 51 adjoins a pair of groove forming wall sections 17, 18 that delimit the elongated clamping groove 13. The curved outer end wall section 52 interconnects the pair of sections side wall 51 at one outer end of each lobe part 15. Note that the pair of side wall sections 51 and the curved outer wall section 52 form upright wall sections (an upright wall section of three sides) that surround the three sides of each lobe part 15. The seat surface wall section 53 adjoins the pair of side wall sections 51 and the curved outer end wall section 52 and operates as a seating surface (seating surface) for screw 22 or nut 23. With respect to lobe part 15 of the first clamp member 11 (first lobe part), the ceiling wall section of the lobe part operates as the surface wall section of the seat 53 for screw 22, such screw has its head portion welded to the seat surface wall section 53. On the other hand, as for the lobe part 15 of the second clamp member 12 (second lobe part), the wall section of the lower lobe part operates as the seat wall section 53 for nut 23.
    [0041] At a lower margin of the outer end wall section 52 of the lobe part 15 of the first clamp member 11 (first lobe part), the fulcrum part 54 is formed to extend along the (direction of) curvature of the curved outer end wall section 52. The fulcrum part is shaped like an arc and, in the present Example, it is shaped like part of an ellipse. At an upper edge of the outer end wall section 52 of the lobe part 15 of the second clamp member 12 (second lobe part), the fulcrum part 54 is similarly formed to extend along the (direction of) curvature of the curved outer end wall section 52. The fulcrum part is again shaped like an arc and, in the present Example, is shaped like part of an ellipse. Not only are each of the fulcrum parts 54 shaped like an ellipse when viewed in a flat view, but each fulcrum part has the ends 54a, 54b extending to reach the pair of side wall sections 51 where the ends of the fulcrum part are joined to the side wall sections 51. In short, the three upright wall sections (51, 52, 51) of each lobe part 15 are contiguous to the fulcrum part 54 which is shaped as part of an ellipse and extending horizontally like a sword guard.
    [0042] The method of using the clamp device of the present Example is basically the same as that for using the clamp device of the Comparative Example already explained with reference to Figure 4. In the present Example, the clamp device 10, in its in total, it is contracted in diameter as a result of bolting nut 23 against (in) screw 22 (see Figure 8), so that the flange gripping force F is developed between the two pipe components 41 f, 42f as the objects to be attached together (see Figure 4).
    [0043] The graph in Figure 9 shows the results of measuring the relationship between the nut tightening torque (Nm) and the flange gripping force (kN) for the cases of the Example of the present invention (Figures 5 to 8) and of the Comparative Example mentioned above (Figures 1 to 3). It should be noted that the Example and the Comparative Example differ from each other only in the structure of the lobe part 15, while there is no difference in the size or shape of the main clamp body 10. It is seen from Figure 9 that the flange gripping force F of the Example is greater than that of the Comparative Example over the entire measured range of the nut tightening torque. Advantageous Effect of the Example
    [0044] Such a situation in which the seat surface wall 53 sections of the lobe parts 15 are unable to sustain the axial force exerted on the bolt and nut and are then subject to plastic deformation can be suppressed to the greatest extent possible . As a result, a sufficient gripping force F of the flange nut, which is close to the expected value, can be developed while the axial force exerted on the bolt and nut is quite small. In addition, the flange gripping operation can be improved in reproducibility and reliability, compared to that with the Comparative Example, as a related technique.
    [0045] The flange grip force that can be developed can be made relatively larger than the previous one with a nut screwing torque relatively lower than the previous one. Therefore, it is possible to avoid such a situation often encountered in the prior art example, that is, a situation in which "a screw bends under an axial force that is excessively large to lead to loss of the inherent function of the clamp device".
    [0046] With the fulcrum part 54 in the lobe part 15 in the arc shape of a part of an ellipse, the pressure formation can be improved in precision. Specifically, the conventional fulcrum part 34 in the form of a rectangular shaped projection is subject to bounce back after pressure forming, thus leading only to unsatisfactory machining accuracy, such as in shape and dimensioning etc. With the fulcrum part 54 in the arc shape of a part of an ellipse, as in the present Example, elastic recovery is less likely to be produced, thus leading to improved machining accuracy (in shape / size etc.). As a result, in the clamp device of the present Example, the percentage of pre-shipment quality test approval has improved significantly. Variable Example
    [0047] In the Example described above, screw 22 is welded to the lobe part 15 of the first clamp member 11, with nut 23 being a separate body from clamp members 11, 12. Alternatively, nut 23 can be welded to the lobe part 15 of the second clamp member 12, the screw 22 being then a separate body from the clamp members 11, 12. Still alternately, both screw 22 and nut 23 can be separate entities from the clamp members 11, 12. Term Definition
    [0048] In the Description and Claims, an expression "arcuate ^)" in "an arcuate shaped fulcrum part" denotes that the shape of the fulcrum part (54), as viewed in a plan view, is the format according to with a curved shape of the curved outer end wall section (52). That is, the expression "arcuate" in this document must imply any configuration of curved shape that can be expressed by such terms as an arc, a part of an ellipse or an arc shape.
    [0049] It should be noted that symbols for reference to the drawings, as used in the present Order, are exclusively to assist in understanding and are not intended to restrict the invention to the illustrated modes (s).
    [0050] The descriptions of known technical literature, including the Patent Literature indicated above, should be incorporated into this document for reference. The particular exemplary embodiments or examples can be modified or adjusted within the range of the full description of the present invention, including the claims, based on the fundamental technical concept of the invention. In addition, a variety of combinations or a selection of elements disclosed in this document, including various elements of the claims, exemplary modalities, Examples or Figures, may fall within the scope of the claims. It is to be understood that the present invention should include a variety of changes or corrections that may occur to those skilled in the art in accordance with the full descriptions including the claims and the technical concept of the invention. Among others, if the ranges of numerical values are indicated in this document, they should be interpreted as indicators of any arbitrary numerical values or sub-ranges included within such ranges, even if such effect is not explicitly indicated. NUMERICAL REFERENCE LIST 10 main clamp body 11, 12 first and second clamp members 13 elongated tightening groove 14 twisted part (connection section) 15 lobe part 16, 18 (a pair of) groove forming wall sections 21 connection ring (connection means) 22 screw 23 nut 41 f, 42f pipe component flanges (objects to be fastened together) 51 (a pair of) side wall sections 52 curved outer end wall section 53 section seat surface wall 54 arcuate shaped fulcrum part 54a, 54b both ends of the arcuate shaped fulcrum part F flange gripping force.
    权利要求:
    Claims (2)
    [0001]
    1. Clamp device, in which a main clamp body (10) comprises a pair of clamping grooves (13) each being bounded by a pair of groove boundary wall sections (17, 18); the clamping grooves each having a U or V shaped cross-section; and first and second lobe parts (15) arranged in the vicinity of the end portions of the clamping grooves (13); the main clamp body (10) having a ring shape when a screw (22) and a nut (23) are mounted in position on the lobe parts (15) arranged facing each other; the screw (22) and the nut (23) when screwed in order to tighten in relation to each other, develop a force to hold together two objects placed inside the clamping grooves (13); wherein, each of the first and second lobe parts (15) comprises: a pair of side wall sections (51) respectively contiguous to the pair of groove boundary wall sections (17, 18) that delimit the groove clamping (13); a curved outer end wall section (52) interconnecting the pair of side wall sections (51) at an outer end of each lobe part (15); and a seat surface wall section (53) adjoining the pair of side wall sections (51) and the outer end wall section (52); the seat surface wall section (53) providing a seating surface for the screw (22) or the nut (23); and an arcuously shaped fulcrum part (54) being formed in the curved outer end wall section (52) of each lobe part (15) so as to extend along a direction of curvature of the wall section of outer end (52), characterized by the fact that each of the first and second lobe parts (15) comprises end portions (54a, 54b) reaching the side wall section (51) at the fulcrum part (54) that protrudes from the side wall section (51).
    [0002]
    2. Clamp device according to claim 1, characterized in that both end portions (54a, 54b) of each fulcrum part (54) arcuously shaped extend to be integral with the sidewall sections (51) paired.
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    同族专利:
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-07-09| B06T| Formal requirements before examination|
    2020-06-09| B09A| Decision: intention to grant|
    2020-11-03| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 11/07/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2012164777A|JP5456853B2|2012-07-25|2012-07-25|Clamping device|
    JP2012-164777|2012-07-25|
    PCT/IB2013/055687|WO2014016721A1|2012-07-25|2013-07-11|Clamp device|
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