• 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:
    An expansion connector including a connecting rod and an expansion sleeve sheathed on the connecting rod. The expansion sleeve is a hollow cylindrical structure having a first end and a second end. The first end of the expansion sleeve includes a first expansion part, and the second end includes a second expansion part. At least one first longitudinal slit is formed on the first expansion part and extends along the axial direction of the expansion sleeve. At least one second longitudinal slit is formed on the second expansion part and extends along the axial direction of the expansion sleeve. The first expansion part includes an inner wall provided with internal threads; the connecting rod includes a first end and a second end; the first end of the connecting rod includes a threaded portion configured to expand the first expansion part.
    公开号:EP3683455A1
    申请号:EP19213040.9
    申请日:2019-12-03
    公开日:2020-07-22
    发明作者:Weiming Liu
    申请人:Weiming Liu；
    IPC主号:F16B13-00
    专利说明:
    [0001] The disclosure relates to the field of mechanical fastening, and more particularly to a mechanical expansion connector.
    [0002] As shown in FIG. 1, a conventional eccentric connector includes at least an eccentric wheel, a connecting rod, and a pre-embedded nut. Specifically, the bottom torsion of the eccentric wheel deviates from the radian of the center of the circle. When rotating the cross-screw slot of the eccentric wheel through a corkscrew, the connecting rod in the radian will pull along the radian to the center of the eccentric wheel, thus tightening the distance between the eccentric wheel and the pre-embedded nut, thus strengthening the connection between the plates.
    [0003] In an assembled conventional connector, there is a gap between the connecting rod and the eccentric wheel, so that the connecting rod tends to waggle, leading to connection instability. In addition, a conventional eccentric connector includes many parts, and this causes a relatively difficult installation.
    [0004] The disclosure provides an expansion connector that features firm connection and is easy to install and dismantle.
    [0005] Provided is an expansion connector comprising a connecting rod and an expansion sleeve sheathed on the connecting rod; the expansion sleeve is a hollow cylindrical structure comprising a first end and a second end; the first end of the expansion sleeve comprises a first expansion part, and the second end comprises a second expansion part.
    [0006] At least one first longitudinal slit is formed on the first expansion part and extends along the axial direction of the expansion sleeve.
    [0007] At least one second longitudinal slit is formed on the second expansion part and extends along the axial direction of the expansion sleeve.
    [0008] The first expansion part comprises an inner wall provided with internal threads; the connecting rod comprises a first end and a second end; the first end of the connecting rod comprises a threaded portion configured to expand the first expansion part; the threaded portion comprises external threads corresponding to the internal threads of the first expansion part by size; and the second end of the connecting rod comprises a head configured to expand the second expansion part.
    [0009] The first expansion part comprises a cavity comprising a cylindrical hole and a tapered hole; the cylindrical hole, the tapered hole and the expansion sleeve are coaxial; the tapered hole is closer to the first end of the expansion sleeve than the cylindrical hole; the internal threads of the first expansion part extends along the direction from the cylindrical hole to the tapered hole; the diameter of the tapered hole decreases from the cylindrical hole to the first end of the expansion sleeve; and the at least one first longitudinal slit is formed around the tapered hole.
    [0010] The outer diameter of the head of the connecting rod decreases along the direction from the second end to the first end of the expansion sleeve, and the cavity of the second expansion part matches the head of the connecting rod.
    [0011] The head comprises an end face which is depressed to form a polygonal mounting hole.
    [0012] The expansion connector further comprises an L-shaped rod, a cross-sectional shape of which is identical to that of the mounting hole.
    [0013] The expansion sleeve comprises a first body and a second body fitted to each other, and the first body is integrated with the second body by a lock catch.
    [0014] The first body and the second body of the expansion sleeve have the same structure; two sides of the first body and the second body are provided with fasteners; two pairs of fasteners are provided, and each fastener comprises an insert hole and a cog; the insert hole and the cog are disposed at two sides of the first body and the second body, respectively; the cog of the first body is embedded in the insert hole of the second body, and the cog of the second body is embedded in the insert hole of the first body, thus integrating the first body and the second body of the expansion sleeve.
    [0015] One end of the cog is provided with a barb.
    [0016] The expansion sleeve comprises a telescopic portion disposed between the first end and the second end, and the telescopic portion comprises a corrugated pipe.
    [0017] The telescopic portion comprises at least one third longitudinal slit extending axially along the expansion sleeve.
    [0018] The advantages of the expansion connector according to embodiments of the disclosure are as follows: 1) the first expansion part and the second expansion part are embedded in the material to be fastened (e.g., furniture), and pose no adverse effect on the appearance; 2) the connections between the first expansion part and the second expansion part and the material to be fastened are firm and reliable; 3) the expansion connector facilitates the assembly and disassembly of the material to be fastened, thus improving the work efficiency.FIG. 1 is a schematic diagram of an eccentric connector in the related art; FIG. 2 is a schematic diagram of an expansion connector as described in the disclosure; FIG. 3 is a first exploded view of an expansion connector as described in the disclosure; FIG. 4 is a second exploded view of an expansion connector as described in the disclosure; and FIG. 5 is a schematic view showing the installation of an expansion connector as described in the disclosure.
    [0019] To further illustrate, embodiments detailing an expansion connector are described below. It should be noted that the following embodiments are intended to describe and not to limit the disclosure.
    [0020] Referring to FIG. 1 to FIG. 5, an expansion connector comprises a connecting rod 1 and an expansion sleeve 2 sheathed on the connecting rod 1; the expansion sleeve 2 is a hollow cylindrical structure; the first end of the expansion sleeve 2 comprises a first expansion part 21, and the second end comprises a second expansion part 22; at least one first longitudinal slit 210 is formed on the first expansion part 21 and extends along the axial direction of the expansion sleeve 2. The first longitudinal slit 210 divides the first expansion part 21 into the expansion blocks that can expand outwards. At least one second longitudinal slit 220 is formed on the second expansion part 22 and extends along the axial direction of the expansion sleeve 2.
    [0021] The first expansion part 21 comprises an inner wall provided with internal threads; the connecting rod 1 comprises a first end and a second end; the first end of the connecting rod comprises a threaded portion 11 configured to expand the first expansion part; the threaded portion 11 comprises external threads 110 corresponding to the internal threads of the first expansion part 21 by size; and the second end of the connecting rod 1 comprises a head 12 configured to expand the second expansion part 22.
    [0022] The first expansion part comprises a cavity 200 which comprises a cylindrical hole 2001 and a tapered hole 2002; the cylindrical hole 2001, the tapered hole 2002 and the expansion sleeve 2 are coaxial; the tapered hole 2002 is closer to the first end of the expansion sleeve than the cylindrical hole 2001; the internal thread of the first expansion part 21 extends from the cylindrical hole 2001 to the tapered hole 2002, and the diameter of the tapered hole 2002 decreases along the direction in which the connecting rod 1 is screwed into the expansion sleeve 2, and the at least one first longitudinal slit 210 is formed around the tapered hole 2002.
    [0023] The inner wall of the expansion sleeve in the inner side of the first expansion part 21 narrows to form a circular hole 25; the inner diameter of the circular hole 25 corresponds to the outer diameter of the connecting rod 1, and the connecting rod is embedded in and fixed by the circular hole 25.
    [0024] The head 12 of the connecting rod is in the shape of a circular truncated cone; the outer diameter of the head 12 gradually reduces along the direction the connecting rod 1 is screwed into the expansion sleeve 2, and the cavity of the second expansion part 22 is identical to the shape of the head 12.
    [0025] The end face of the head 12 has a mounting hole 10; the expansion connector further comprises an L-shaped rod, a cross-sectional shape of which is identical to that of the mounting hole 10. Preferably, the end face of the head 12 has a hexagonal mounting hole 10. The expansion connector further comprises a hexagonal key 3, which is an L-shaped hexagonal rod having a cross-sectional shape that is identical to the mounting hole 10. The cross-section of the mounting hole 10 and the hexagonal key 3 can also be designed as other polygons, or star or asterisk, as long as it can be screwed to the connecting rod.
    [0026] The expansion sleeve 2 comprises a first body 201 and a second body 202 fitted to each other, and the first body 201 and the second body 202 can be integrated as a whole by a lock catch. The lock catch comprises fasteners, and the fasteners may be disposed on one end or in the middle of the expansion sleeve 2.
    [0027] The fasteners each comprise an insert holes 204 and a cog 203; there are 2 pairs of fasteners in this example; the insert hole 204 and the cog 203 are disposed on both sides of the first body 201 and the second body 202, respectively; the cog 203 of the first body 201 is embedded in the insert hole 204 of the second body 202, and the cog 203 of the second body 202 is embedded in the insert hole of the first body 201, so that the first body 201 and the second body 202 of the expansion sleeve 2 are connected as a whole.
    [0028] One end of the cog 203 is provided with a barb which is configured to prevent the cog 203 from sliding out of the insert hole 204.
    [0029] The middle portion of the expansion sleeve 2 is provided with a telescopic portion 23 which employs a corrugated pipe, and the telescopic portion 23 strengthens the connection between the two wooded boards.
    [0030] The telescopic portion 23 comprises at least one third longitudinal slit 230 extending axially along the expansion sleeve 2. When the connecting rod interacts with the expansion sleeve, the third longitudinal slit 230 enables the expansion part 23 to expand radially outwardly. This strengthens the connection.
    [0031] The usage method and working principle of the expansion connector are as follows:1. as shown in FIG. 5, punching holes in the wooden board a and the wood b to be connected; 2. sleeving the expansion sleeve 2 on the connecting rod 1, and matching the threaded portion of the connecting rod 1 with the internal thread in the cylindrical hole 2001 of the expansion sleeve 2; 3. embedding one end of the expansion connector in the mounting hole of the wooden board a, embedding the other end thereof in the mounting hole of the wooden board b, and using the hexagonal key to pass through the wooden board b to align with the hexagonal mounting hole 10 of the head of the connecting rod; 4. turning the hexagonal key to drive the connecting rod to rotate; 5. the inclination of the head 12 of the connecting rod causes the second expansion part 22 to expand to firmly lock the wooden board b; 6. continue to screw in the connecting rod 1 so that the first expansion part 21 expands to firmly lock the wooden board a; 7. continue to screw in the connecting rod 1 to drive the telescopic portion 23 of the expansion sleeve 2 to stretch; the two wooden boards are contracted and close to each other under the restoring force of the telescopic portion 23; in addition, when the connecting rod 1 and the expansion sleeve 2 are engaged with each other, the telescopic portion 23 is axially compressed, and the third longitudinal slit 230 is expanded to drive the telescopic portion 23 to expand radially outwards to fill the gap between the expansion sleeve and the wooded board thus strengthening the connection.
    [0032] It will be obvious to those skilled in the art that changes and modifications may be made, and therefore, the aim in the appended claims is to cover all such changes and modifications.
    权利要求:
    Claims (10)
    [0001] An expansion connector, comprising a connecting rod and an expansion sleeve sheathed on the connecting rod; characterized in that:
    the expansion sleeve is a hollow cylindrical structure comprising a first end and a second end; the first end of the expansion sleeve comprises a first expansion part, and the second end comprises a second expansion part;
    at least one first longitudinal slit is formed on the first expansion part and extends along an axial direction of the expansion sleeve;
    at least one second longitudinal slit is formed on the second expansion part and extends along the axial direction of the expansion sleeve; and
    the first expansion part comprises an inner wall provided with internal threads; the connecting rod comprises a first end and a second end; the first end of the connecting rod comprises a threaded portion configured to expand the first expansion part; the threaded portion comprises external threads corresponding to the internal threads of the first expansion part by size; and the second end of the connecting rod comprises a head configured to expand the second expansion part.
    [0002] The connector of claim 1, characterized in that the first expansion part comprises a cavity comprising a cylindrical hole and a tapered hole; the cylindrical hole, the tapered hole and the expansion sleeve are coaxial; the tapered hole is closer to the first end of the expansion sleeve than the cylindrical hole; the internal threads of the first expansion part extends along a direction from the cylindrical hole to the tapered hole; a diameter of the tapered hole decreases from the cylindrical hole to the first end of the expansion sleeve; and the at least one first longitudinal slit is formed around the tapered hole.
    [0003] The connector of claim 2, characterized in that an outer diameter of the head of the connecting rod decreases along a direction from the second end to the first end of the expansion sleeve, and the cavity of the second expansion part matches the head of the connecting rod.
    [0004] The connector of claim 1, characterized in that the head comprises an end face which is depressed to form a polygonal mounting hole.
    [0005] The connector of claim 4, further comprising an L-shaped rod, a cross-sectional shape of which is identical to that of the mounting hole.
    [0006] The connector of claim 1, characterized in that the expansion sleeve comprises a first body and a second body fitted to each other, and the first body is integrated with the second body by a lock catch.
    [0007] The connector of claim 6, characterized in that the first body and the second body of the expansion sleeve are structurally identical; two sides of the first body and two sides of the second body are totally provided with two pairs of fasteners; each fastener comprises an insert hole and a cog; the insert hole and the cog are disposed at two sides of the first body and the second body, respectively; the cog of the first body is embedded in the insert hole of the second body, and the cog of the second body is embedded in the insert hole of the first body.
    [0008] The connector of claim 7, characterized in that one end of the cog is provided with a barb.
    [0009] The connector of any one of claims 1-8, characterized in that the expansion sleeve comprises a telescopic portion disposed between the first end and the second end, and the telescopic portion comprises a corrugated pipe.
    [0010] The connector of claim 9, characterized in that the telescopic portion comprises at least one third longitudinal slit extending axially along the expansion sleeve.
    类似技术:
    公开号 | 公开日 | 专利标题
    CA2501169C|2008-08-05|Tolerance compensating mounting device
    US8430618B2|2013-04-30|Fasteners for composite material
    EP0942177B1|2003-06-04|Anchor unit with expansive anchor member expanded by utilizing turning force of bolt
    US9541116B2|2017-01-10|Anchor fastener including an expansion sleeve
    US5961266A|1999-10-05|Anti-vibration bolt and nut structure
    US3042094A|1962-07-03|Locking screw with expanding means at each end
    CA2585161C|2011-02-08|Self-drilling hollow wall anchor
    US4041834A|1977-08-16|Plastic headed fastener assembly
    US6050765A|2000-04-18|Fastener for logs and fastening technique therefor
    US10107323B2|2018-10-23|Barrel nut assembly
    US3003149A|1961-10-03|Replacement antenna
    US6442906B1|2002-09-03|Elevation-adjustable rod member locking structure
    US3276308A|1966-10-04|Blind fasteners
    CA2529714C|2008-12-23|Connector
    US3512328A|1970-05-19|Fastening device
    US2429833A|1947-10-28|Fastening means
    US5769583A|1998-06-23|Connecting element with thread on both sides
    EP1746293A1|2007-01-24|Fixing device for hollow frames and plate surfaces
    CN101135331B|2011-06-15|Fastening device with tolerance compensation
    KR20050057513A|2005-06-16|Split lock screw fastener assembly and method
    US20040071527A1|2004-04-15|Screw grommet
    US20160160904A1|2016-06-09|Anti-loosening bolt assembly
    EP0643230A1|1995-03-15|Nut or bolt with fine adjustment
    CA2665901C|2014-07-08|Expansion anchor
    US6478518B1|2002-11-12|Barrel nut
    同族专利:
    公开号 | 公开日
    CN109630525A|2019-04-16|
    US20200232494A1|2020-07-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2020-06-19| STAA| Information on the status of an ep patent application or granted ep patent|Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED |
    2020-06-19| PUAI| Public reference made under article 153(3) epc to a published international application that has entered the european phase|Free format text: ORIGINAL CODE: 0009012 |
    2020-07-22| AX| Request for extension of the european patent|Extension state: BA ME |
    2020-07-22| AK| Designated contracting states|Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
    2020-11-13| STAA| Information on the status of an ep patent application or granted ep patent|Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
    2020-12-16| RBV| Designated contracting states (corrected)|Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
    2020-12-16| 17P| Request for examination filed|Effective date: 20201105 |
    2021-01-13| 19U| Interruption of proceedings before grant|Effective date: 20191203 |
    2021-03-03| 19W| Proceedings resumed before grant after interruption of proceedings|Effective date: 20210211 |
    2021-07-08| STAA| Information on the status of an ep patent application or granted ep patent|Free format text: STATUS: GRANT OF PATENT IS INTENDED |
    2021-07-08| GRAP| Despatch of communication of intention to grant a patent|Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
    2021-08-04| INTG| Intention to grant announced|Effective date: 20210709 |
    2021-11-05| GRAS| Grant fee paid|Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
    2021-12-03| STAA| Information on the status of an ep patent application or granted ep patent|Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
    2021-12-03| GRAA| (expected) grant|Free format text: ORIGINAL CODE: 0009210 |
    2022-01-05| AK| Designated contracting states|Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
    2022-01-05| REG| Reference to a national code|Ref country code: GB Ref legal event code: FG4D |
    2022-01-14| REG| Reference to a national code|Ref country code: CH Ref legal event code: EP |
    2022-01-15| REG| Reference to a national code|Ref country code: AT Ref legal event code: REF Ref document number: 1460845 Country of ref document: AT Kind code of ref document: T Effective date: 20220115 |
    2022-01-20| REG| Reference to a national code|Ref country code: DE Ref legal event code: R096 Ref document number: 602019010659 Country of ref document: DE |
    2022-02-02| REG| Reference to a national code|Ref country code: IE Ref legal event code: FG4D |
    优先权:
    申请号 | 申请日 | 专利标题
    [返回顶部]