• 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:
    SUMMARY A hinged block wrench for loosening and tightening hexagon nuts and screws with hexagon head includes a shaft (5) and a wrench (7) 5 hinged to the shaft (5) 5 with two handles (8, 9) for engaging each opposite side ( 41, 42) of the nut / screw head (4). In order to design the block key so that it can be used in cramped spaces and is robust, so that the number of stresses that it has been subjected to when used outdoors, e.g. when changing hydraulic hoses in the woods, one shaft (8) is shorter than the other and rigid, while the other (9) is longer and armed slightly bent, and the key head (7) has a recess (10) which is between the two shafts (8, 9) form support surfaces for two other sides (43, 44) of the hexagonal nut / screw head (4), so that the key head (7), as it engages the nut / screw head (4), engages on four stables.
    公开号:SE1351252A1
    申请号:SE1351252
    申请日:2013-10-22
    公开日:2015-04-23
    发明作者:Anders Olofsson
    申请人:Anders Olofsson Med Enskild Skogs Anders F；
    IPC主号:
    专利说明:

    TECHNICAL FIELD The present invention relates to a block wrench for loosening and tightening hexagon nuts and screws with hexagon head in narrow spaces, which block wrench comprises a shaft and the shaft carries a key for the opposite side of the key. the nut / screw head.
    PRIOR ART At e.g. In many hydraulic systems, it appears that a group of hoses or other conduits are screwed into one or more pressure medium control blocks arranged next to each other. If a hose / line needs to be replaced, While one or more adjacent hoses / lines must be loosened in order to be able to unscrew the hose / line to be replaced. There have simply been no tools adapted to loosen hexagon sockets and hexagon socket head screws in tight spaces, so that after rotation of the nut head can be reattached with the key in the nut head without adjacent hose couplings or the like having to be disassembled first.
    US 7,024,970 B2 SE 520 609 C2, Boman) discloses a socket wrench comprising a socket wrench element which is provided with a socket for engagement with a butt or nut. The socket wrench element is provided with a U-shaped opening for a longer butt than normal and with an opening in the mantle surface. The socket wrench element is forseft with a joint and is connected to a shaft with a U-shaped profit, which in the fallen layer forms a sea arm and in the fallen layer encloses a butt which goes through the socket key element. The socket wrench element and its U-shaped opening are designed so that when the socket wrench element and the shaft form a substantially straight angle with each other, the U-shaped opening has an axis of symmetry, which coincides with an extension of the longitudinal axis of the shaft, and the two shafts defining the U-shaped opening laterally is inboard like pliers & US 2010/0229692 Al (Cubitlas) describes an articulated block wrench of the ratchet type, which is intended for work with hose / pipe connections. The block wrench head contains a rotatable, annular and on the one hand open nay, which comprises a ratchet mechanism with tvS. Werload-loaded ratchets and has an inside designed for engagement with a hexagon nut. The block wrench is pushed from the side into the hose / line and then lowered over the nut, and the Spanish mechanism If the wrench does not need to be lifted, turned to 2 (11) new rage and then lowered again to allow loosening or tightening of the nut on, the hose / wire. To rotate the key head in tight spaces, the shaft can be angled up so that it is parallel to the hose / line to be loosened or tightened. In addition, the key head is provided with a square recess for receiving a conventional extender for a ratchet shaft. The problem with chevron-type keys is the hall strength. When working on e.g. forest machines, the required key widths are usually at least 30 nun, and the forces required are so, large aft savings flats are quickly enlarged.
    US 2012/0297936 Al (Chen) describes a block wrench with a shaft and a key head. The shaft is not articulated to the key head and can therefore not be folded up to parallelism with the hose / cable to be mounted or dismounted. The key head comprises two substantially parallel caftans. One caft carried a first and a second abutment surface, which form an angle with each other. The second shaft has a third and a fourth abutment surface, which is separated by a concave surface. If desired, the tip of the second shaft with the third abutment surface and the concave surface can be omitted. The second and fourth abutment surfaces are not parallel to each other, but diverge in the direction of the shaft. When the key head is subjected to a rotating force in the direction from the fourth abutment surface, past the shaft to the second abutment surface, the fourth abutment surface in its entirety will abut against one side of the nut / screw head, while the angle = Ilan the first and the second abutment surface aft abut against the opposite side of the nut / screw head. Furthermore, in the direction of rotation, the first horn of the nut / screw head after the fourth abutment surface will abut against the first of two flat sides in a recess for the hexagonal nut / screw head arranged in the key head. The next horn or side of the nut / screw head remains unsteaded when force is applied to the key head, so that the entire abutment surface will abut against one side of the nut / screw head, and the key engages the nut / screw head in a three-point engagement.
    BRIEF SUMMARY OF THE INVENTION The object of the present invention is to provide a block wrench which can be used in cramped spaces and is robust, as well as the stresses to which it is subjected when used outdoors, e.g. when replacing hydraulic hoses in forest machines, but also that it lights up during industrial activities, e.g. the paper and pulp industry, as well as assembly work in hard-to-reach spaces during manufacture.
    This object is achieved in a preferred embodiment of the invention in that the block key stated in the first paragraph above is designed so that one shaft is shorter than the other and rigid, while the other is longer and thus bassoon folded, and that the key head 3 (11) has a recess which between the two shafts forms support surfaces for two other sides of the hexagonal nut / screw head, so that the key head, when engaged with the nut / screw head, grips it on four stalls. This design makes it possible to use the block key according to the invention in spaces where existing keys are too large. Four grip points are an advantage when it comes to avoiding that the sides of the nut / screw head are enlarged by deformation. An ordinary block wrench provides only two grip points and an embodiment of the above-mentioned US 212/0297936 (Chen) provides three.
    Preferably, the recess is mainly in the form of a part of a hexagon adapted to the hexagonal nut / screw head, but with outwardly extended roundings of the horns in the hexagon. On such a salt, the key head's engagement stall is shifted a distance & An homen on the nutmeg shell and the risk for so-called rounding is reduced.
    The key head is thus gripped by four standpoints against the hexagonal nut / screw head, and when the key head is applied to the nut / screw head in this way, even in the desired direction of rotation the longer, weaker shaft is the shorter, stiffer, it becomes the stiff, shorter the shaft as opposed to the largest proportion of the torque of the key head against the hexagonal nut / screw head, and the grip becomes extremely stable. When turning the nut / screw head, the weaker, longer shaft 20 must always be four the stiff, shorter one in the direction of rotation, regardless of whether the nut / screw head is to be loosened or tightened. In order to perform the intended intervention after changing the direction of rotation, the key head must therefore be watered.
    Suitably the shorter shaft has a transverse and cross-sectionally rounded or V-shaped projection for abutment against the side of the nut screw head, it being suitable for the said invention to extend the rounding next to the shorter shaft over & continuously in the projection. Rounded cross-section can, for example, be used for factory assembly, while the V-shaped cross-section can be more lampy during folding conditions, as it must be able to loosen and tighten e.g. a hose / pipe connection and any clamp damage to 30 nuts / screw heads does not matter. In this case, it is appropriate that the V-shaped projection has a substantially right-angled edge angle. Furthermore, it is suitable for the outwardly extended rounding next to the shorter shaft at its transverse direction in the projection to have a direction which forms an angle which is at least 100, but not greater than 150 ° with the side of the nut head shell gripped by the key head. When adjusting the angle, the key 35 will "chop" most aggressively, while the grip effect decreases when the angle moves towards the higher values. Furthermore, it is appropriate that the longer shaft has a projecting, flat lug formed aft antigga against the nut / screw head 4 (11) Preferably, the key head is articulated to the shaft with a hinge connection, which is such that the key head is pivotable 1800 relative to the shaft, This gives the increased 1/161-let to loosen or tighten the nut / screw head in tight spaces. The tool shaft can extend parallel to the hose / wire to be loosened or screwed, and the wrench head can turn the nut / screw head independently of other adjacent hoses / wires and / or nuts / screw heads. The work is undertaken if the joint between the key head and the shaft has such great friction that the key head retains after installation.
    In order to be able to safely apply a sufficiently large torsional force to the key head to loosen the nut / screw head, the shaft has at least at its half opposite in relation to the key head suitably two opposite parallel sides, which when the key head is swung out 90 ° relative to grip for one tool, e.g. a wrench, to turn the block wrench and & armed rotate the gripped nut / screw head.
    Preferably, at least the key head consists of chromium molybdenum number, so that the shorter, rigid head has sufficient rigidity so as not to slip away when loosening a hard-fitting nut / screw head. In order to increase the stability of the key head and reduce the risk of damage to the nut / screw head, it is appropriate that the key head has a thickness in the direction of an oxygen triaxle for the nut screw head of at least 8 turns, preferably at least about 12 nun.
    BRIEF DESCRIPTION OF THE DRAWINGS In the following, the invention will be further described with reference to preferred embodiments and the accompanying drawings.
    Figure 1 is a plan view of a preferred embodiment of an articulated block wrench according to the present invention in engagement with a hexagon nut or hexagon head screw.
    Figure 2 is a perspective view of a plate with Ire hose nipples and the block wrench in Figure 1 facing down towards the nut of the middle hose nipple for loosening or tightening the nut.
    Figure 3 is a plan view of three hexagon nuts or screws with hexagonal head arranged in a row with the block wrench in Figure 1 in engagement with the middle nut / screw head for tightening. Figure 4 is a plan view showing the arrangement of Figure 3 when the block key has been moved so far that it must take a new step to continue tightening. Figure 5 is a plan view similar to that of Figure 1 and shows in two partial enlargements of the area around a shorter shaft in the key head, which shaft has a cross-section rounded or V-shaped projection for abutment against the side of the nut screw head.
    Figure 6 is also a partial enlargement, showing partly that the V-shaped projection has a flat side intended to abut against the nut / screw head and partly the design of the connection between the flat side and an inwardly extended rounding of an adjacent horn in another to the key head. the hexagonal nut / screw head adapted recess in the key head. Figure 7 is a plan view similar to those in Figures 3 and 4 and shows how to apply e.g. a wrench on the socket wrench shaft to increase the torque when tightening / loosening a responsive wrench.
    DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 20 The articulated block wrench shown in the drawings is intended for loosening and tightening hexagon nuts 4 and screws with hexagon head in tight spaces and includes a shaft and after via a joint 6 at the shaft articulated key head 9, key head 9 for engagement with each opposite side 41, 42 of the nut / screw head 4. At e.g. In many hydraulic systems, a group of hoses or other conduits are screwed into one or more adjacent pressure medium control blocks. If a hose / line needs to be replaced, while one or more adjacent hoses / lines must be loosened before unscrewing the hose / line to be replaced.
    Figure 2 shows a surface of a pressure medium guiding block 1, in which three hose nipples 2 with hexagon nuts 4 are screwed in a row at a short distance from each other. The middle hose nipple 2 is shown provided with a hose 3. The key head 7 has continued from the side into the spirit of the hose 3 and can now be lowered so that it grips the nut 4.
    In order for the block wrench to be able to be used in cramped spaces and to be robust, the number of strains to which it has been subjected when used outdoors, e.g. when replacing hydraulic hoses in forestry machines, it is designed according to the invention so that one shaft 8 is shorter than the other 9 and rigid, while the other 9 is longer and slightly bent, and that the key head 7 has a recess 10, which between the the two shafts 8, 9 form support surfaces for two 6 (11) other sides 43, 44 of the hexagonal nut screw head 4, A. aft the key head 7, as it is in engagement with the nut / screw head 4, it grips on four stalls, as shown above in the four dashed areas in Figure 1. 5 In retrospect, the recess has the shape mainly of a part of a hexagon adapted to the hexagonal nut / screw head 4, but with outwardly extended curves 101, 102, 103 of the hexagonal housing. On A. sat the engagement head of the key head 7 as shown in Figures 1 and 5 a distance from the horns of the nut / screw head 4 and the risk of so-called rotation (deformation of the shark) of the nut / screw head 4 is reduced.
    The key head 7 thus grips the four stalls shown in the figure by ringing along the hexagonal nut / screw head 4, and when the key head 7 is fitted to the nut / screw head 4 in this way, the longer and softer shaft 9 lies in the desired direction of rotation. shorter and stiffer 8 as shown in Figure 3, it becomes the rigid, shorter shaft 8 which faces the largest proportion of the torque of the key head 7 against the hexagonal nut / screw head 4, and the grip becomes extremely stable. When turning the nut / screw head 4, the weaker and longer shaft 9 must always lie four the stiff, shorter 8 in the direction of rotation, regardless of whether the nut / screw head 4 must be loosened or tightened. In order to provide the intended engagement after a change of direction of rotation, the key head 20 7 must therefore be watered.
    Figures 3 and 4 show how the key head 7 engages a central nut / screw head 4 in a row of three nuts / screw heads 4, which are so spaced apart from each other that a conventional block wrench jute would have sufficient space to grip am the 25 nut / screw head 4 and turn it. In order for the knobs in the conventional wrench to have the necessary stability to be able to fulfill their purpose, they are in fact high in the intended rotation plane of the wrench. The shafts 8 and 9 of the key head 7 of the articulated block wrench according to the invention have, according to the drawings, a considerably lower 116.0 than the shafts of conventional block wrenches, and they obtain sufficient stability in that they are shorter and in that the key head has a thickness in the direction of a axis of symmetry for the nut / screw head 4 of at least 8 mm, preferably at least about 12 mm, which also reduces the risk of damage to the nut / screw head 4. The stability of the shafts 8 and 9 is preferably further improved by at least the key head 7 consisting of chrome molybdenum number, so shorter, rigid shank 8 provides sufficient rigidity for aft jute fiddle 35 to loosen when loosening a hard-tightening nut / screw head 4.
    A comparison between Figures 3 and 4 shows that, despite the limited working space for the articulated block wrench according to the invention, it is possible to turn it at least 60 ° with one and 7 (11) same grips of the key head 7 in the nut / screw head 4, but up to 900 before the key head 7 ma.ste shift grip to continue rotation in steps of 60 °. It is further shown in Figures 3 and 4 that the shaft can be folded up from the key head 7, so that if this is required due to the fact that the working space is limited, the shaft can extend parallel to the axis of symmetry of the nut / screw head 4. In order to give with certainty the possibility of applying a sufficiently large torsional force to the key head 7 to loosen or tighten the nut / screw head 4, the shaft has at least at its half opposite in relation to the key head 7, suitably two opposite parallel sides 51, which have a key head 7. is extended 900 relative to the shaft offers gripping possibility for a tool, e.g. as shown in Figure 7, a wrench 11, for turning the block wrench and armed rotates the gripped nut / screw head 4.
    As shown in Figure 5, the shorter caft 8 suitably has a transverse and in cross-section rounded or V-shaped projection 81 for abutment against the side 41 of the nut screw head 4, 15, it being appropriate that the said outwardly extended rounding 101 adjacent the shorter caft 8 over & continuously in the projection 81. Rounded cross-section, shown in the left part enlargement in Figure 5, can be used, for example, in factory assembly, while the V-shaped cross-section, shown in the right part enlargement in Figure 5, may be more suitable under field conditions, as it Oiler to be able to weld and tighten e.g. a hose / line connection, and any clamp damage to the nut screw head does not matter. In this case, it is suitable for the V-shaped projection 81 to have a substantially right-angled edge angle α. As shown in Fig. 6, it is furthermore suitable for the outwardly extended rounding 101 next to the shorter shaft 8 at its transition in the projection 81 to have a direction , which forms an angle JI, which is at least 105 ° but not more than 150 ° with the side 41 of the nut screw head 4 gripped by the wrench head 7. 1 gar mot de htigre vardena. The figures also show that the longer shaft 9 has a projecting, flat lug 9 'formed to abut against the nut / screw head 4. As shown in Figures 2-4 and 7, the articulation barrier 6 between the shaft and the key head 7 is preferably such that the key head 7 is pivotable 180 ° in relation to the shaft 5. This gives "Row to loosen or tighten the nut / screw head 4 in tight spaces. The tool shaft can extend parallel to the hose / wire 3 to be loosened or screwed, and the key head 7 can turn the nut / screw head 4 independently of other adjacent hoses / wires and / or nuts / screw heads The work is facilitated if the joint 6 between the key head 7 and the shaft has such a friction that the key head 7 retains a relatively shaft installed layer 8 (11) 1NDUSTRIAL APPLICATION robust, articulated block wrench according to the invention is specially lamped for loosening and tightening of hexagon nuts and screws with hexagon head in tight spaces, e.g. when replacing hydraulic hoses in forest machines out in the terrain, but also that it lights up during 5 industrial activities, e.g. the paper and pulp industry, especially assembly work in black-and-white spaces during manufacture.
    权利要求:
    Claims (14)
    [1]
    Block wrench for loosening and tightening hexagon nuts and screws with hexagon head in tight spaces, which block wrench comprises a shaft (5) and a wrench (7) carried by the shaft (5) with two handles (8, 9) for engagement with each other opposite side (41, 42) of the nut / screw head (4), characterized in that one shaft (8) is shorter than the other and rigid, while the other (9) is longer and armed slightly bent, and that the key head (7 ) has a recess (10), which between the two shafts (8, 9) forms support surfaces for two other sides (43, 44) of the hexagonal nut screw head (4), said that the key head (7), when engaged with nut / screw head (4), it grips the ph four stables.
    [2]
    Block wrench according to claim 1, characterized in that the recess (10) is substantially in the form of a part of a hexagon adapted to the hexagonal nut / screw head (4), but with extended roundings (101, 102, 103) of the hexagonal housing. .
    [3]
    Block wrench according to claim 2, characterized in that the shorter shaft (8) has a transverse and in cross-section rounded or V-shaped projection (81) for abutment against the side (41) of the nut / screw head (4).
    [4]
    Block wrench according to claim 3, characterized in that the tit & extended rounding (101) adjacent to the shorter shaft (8) continuously overlaps in the projection (81).
    [5]
    Block wrench according to Claim 3 or 4, characterized in that the V-shaped projection (81) has a substantially right-angled edge angle (α).
    [6]
    Block wrench according to any one of claims 3-5, characterized in that the outwardly extended rounding (101) adjacent to the shorter shaft (8) at its transition in the projection (81) has a direction which forms an angle (13) which is at least 0 but not larger than 10 with the side (41) of the nut / screw head (4) gripped by the key head (7).
    [7]
    Block wrench according to one of Claims 1 to 6, characterized in that the longer shaft (9) has a projecting, flat lug (9 ') designed to abut against the nut / screw head (4).
    [8]
    Block wrench according to one of Claims 1 to 7, characterized in that the key head (7) is articulated to the shaft (5) with a hinge connection (6). 10 (11)
    [9]
    Block wrench according to claim 8, characterized by the aft joint connection (6) between the shaft (5) and the key head (7) is such that the key head (7) is pivotable 1800 in relation to the shaft (5).
    [10]
    Block wrench according to claim 7, characterized by the aft joint (6) between the key head (7) and the shaft (5) has such a large & fiction that the key head (7) maintains an installed position relative to the shaft (5).
    [11]
    Block wrench according to claim 9 or 10, characterized in that the shaft (5) has at least at its half opposite in relation to the key head (7) two opposite parallel sides (51), which when the key head (7) is flared 900 relative to the shaft (5). ) offers grip for a tool, e.g. a wrench (11), to turn the socket wrench and allegedly rotate the gripped nut / screw head (4).
    [12]
    Block key according to one of Claims 1 to 11, characterized in that at least the key head (7) consists of chrome molybdenum numbers.
    [13]
    Block wrench according to one of Claims 1 to 12, characterized in that the key head (7) has a thickness in the direction of a symmetry axis for the nut / screw head (4) of at least 8 frames.
    [14]
    Method for use of the articulated block wrench according to any one of claims 1-12 for loosening and tightening hexagon nuts and screws with hexagon head in tight spaces, characterized in that the key head (7) is attached to the nut / screw head (4) in such a way that in the desired direction of rotation lies the longer, weaker shaft (9) fcire the shorter, stiffer one (8).
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    同族专利:
    公开号 | 公开日
    SE537735C2|2015-10-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2019-05-28| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1351252A|SE537735C2|2013-10-22|2013-10-22|Block key for confined spaces|SE1351252A| SE537735C2|2013-10-22|2013-10-22|Block key for confined spaces|
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