JP5715292B1 - Fastener - Google Patents

Abstract

To provide a fastener capable of reliably suppressing the rotation of a second member relative to a member to be fastened and sufficiently exhibiting a tightening function. A fastening tool interposed between one of first and second fastened members 4 and 6 fastened by using a fixing connector 8 and a part of the fixing connector 8. The fastener includes a first member 22 having a first inclined surface, a second member 24 having a second inclined surface, and an elastic biasing member interposed between the first member 22 and the second member 24. 26, and the first and second inclined surfaces of the first and second members 22 and 24 are in contact with each other so as to slide in the circumferential direction, and the elastic biasing member 26 includes the first inclined surface and the second inclined surface. Due to the action of the surface, the first member 22 is elastically biased in the circumferential direction so as to move relative to the second member 24 in the direction in which the first member 22 is separated. The second member 24 is provided with anti-rotation protrusions 68, and these anti-rotation protrusions 68 are bitten and fixed to one of the first and second fastened members 4 and 6. [Selection] Figure 1

Description

  The present invention relates to a fastening tool that is used so that a gap does not occur when a fastened member is fastened and fixed.

  In wooden construction, when joining beam members, columns and beam members, etc., a fastening method using a fixing connector such as a bolt and a nut is often used. However, due to the nature of wood materials, moisture evaporates and absorbs moisture over the course of the building year, so dimensional changes are inevitable and, of course, they are tightened with fixing connectors. There is a possibility that a gap will be generated between the fixing connector and the beam member. For example, it is said that the shrinkage is about 2 to 5% in the course of about 10 years after construction, and there are inevitably gaps in the fastening parts of the fixing joints to the wooden material, which causes various problems such as deterioration of earthquake resistance. There is a possibility to bring.

  Therefore, a fastener for preventing such a gap from occurring has been proposed (see, for example, Patent Document 1). This fastening tool is attached between one end side of the fastening connector and the fastened member when the fastened members are fastened and fixed, and has a first inclined surface that slopes in the circumferential direction. A first member, a second member having a second inclined surface corresponding to the first inclined surface of the first member, and an elastic biasing member interposed between the first member and the second member. The first inclined surface of the first member and the second inclined surface of the second member face each other and are held in a pressure contact state.

  In such a fastener, for example, when a gap is generated between the first member and one end side of the fixing connector, the first member is moved relative to the second member by the elastic action of the elastic biasing member. Accordingly, the first inclined surface of the first member moves along the second inclined surface of the second member so that the first member moves away from the second member. As a result of the relative movement of the first member in this way, the gap described above is eliminated, and as a result, the tightening state by the fixing connector is maintained, and the occurrence of loosening of the fixing connector can be eliminated. .

Japanese Patent No. 4056539

  However, in the above-described fastening tool, since the fastening tool is simply interposed between the fastened member and one end side of the fixing connector, the second member of the fastening tool slips and the fastened member If the relative rotation is performed in this manner, the elastic force of the elastic biasing member does not sufficiently act on the first member, and the tightening function of the fastener is sufficient. This causes a problem that it cannot be demonstrated.

  An object of the present invention is to provide a fastener capable of reliably suppressing the rotation of the second member relative to the member to be fastened and sufficiently exhibiting the tightening function.

The fastening tool according to claim 1 of the present invention is interposed between one of the first and second fastened members to be fastened to each other using a fixing connector and a part of the fixing connector. A fastening tool,
A first member having a first inclined surface inclined in the circumferential direction; a second member having a second inclined surface corresponding to the first inclined surface of the first member; the first member and the second member; comprises been a resilient biasing member interposed between,
The first member has a first end wall and a first peripheral side wall extending from the first end wall toward the second member, and the first inclined surface is provided on a front end surface of the first peripheral side wall. The first inclined surface includes a first outer inclined surface provided on the outer peripheral portion of the tip surface of the first peripheral side wall and a first inner inclined surface provided on the inner peripheral portion of the tip surface. Configured,
The second member includes a second end wall and a second peripheral side wall extending from the second end wall toward the first member, and the second inclined surface is provided on a front end surface of the second peripheral side wall. The second inclined surface is provided on the outer peripheral portion of the distal end surface of the second peripheral side wall and corresponds to the first outer inclined surface of the first member, and an inner side of the distal end surface. A second inner inclined surface corresponding to the first inner inclined surface of the first member provided on a peripheral portion;
The elastic biasing member is disposed to fit the first and second peripheral side walls of the first and second members, and one end side of the elastic biasing member is the first circumference of the first member. The other end is locked to the second peripheral side wall of the second member,
The first inclined surface of the first member and the second inclined surface of the second member are in contact with each other so as to slide in the circumferential direction, and the elastic biasing member is the first inclined surface of the first member. By the action of the second inclined surface of the surface and the second member, and elastically biased in the circumferential direction so as to move relative to the second member in the direction in which the first member is separated,
The second member is further provided with a plurality of anti-rotation protrusions at intervals in the circumferential direction, and the plurality of anti-rotation protrusions are bitten and fixed to the one of the first and second fastened members. It is characterized by.

Further, in the fastener according to claim 2 of the present invention, tip ends of the plurality of rotation preventing projections are formed to be tapered, and the tapered tip portions bite into the one of the first and second fastened members. It is fixed.

Furthermore, in the fastener according to claim 3 of the present invention, a support member is interposed between the second member and the one of the first and second fastened members. Insertion holes are provided corresponding to the plurality of anti-rotation protrusions of the second member, and the first and second fastened fasteners of the second member pass through the insertion holes of the support member. It is characterized in that it is fixed by biting into the one of the members.

According to the fastener of the first aspect of the present invention, the first inclined surface of the first member and the second inclined surface of the second member are in contact so as to slide in the circumferential direction, and the elastic biasing member. Is elastically biased in the circumferential direction so that the first member moves relative to the second member in a direction away from the second member by the action of the first inclined surface and the second inclined surface. Is provided with a plurality of anti-rotation projections so that the fastener is interposed between the first member to be fastened (or the second member to be fastened) and a part of the fixing connector. The plurality of detent protrusions of the second member bite into the first fastened member (or second fastened member), whereby the first fastened member (or second fastened member) and the second member are And the relative rotation of the second member with respect to the first fastened member (or second fastened member) is reliably prevented, Result, it is possible to sufficiently exhibit the tightening function of the fastener. For example, when a gap is generated between the first member of the fastener and a part of the fixing connector, the first member is relatively moved relative to the second member by the elastic biasing action of the elastic biasing member. When the first inclined surface of the first member moves in the circumferential direction along the second inclined surface of the second member, the first member moves in a direction away from the second member, and the gap is generated. Thus, the tightening state by the fixing connector can be maintained for a long time.
The first inclined surface of the first member includes a first outer inclined surface provided on the outer peripheral portion of the front end surface of the first peripheral side wall, and a first inner inclined surface provided on the inner peripheral portion of the front end surface. The second inclined surface of the second member is provided on the outer peripheral portion of the tip of the second peripheral side wall and corresponds to the first outer inclined surface of the first member; Since it is comprised from the 2nd inner side inclined surface corresponding to the 1st inner side inclined surface of the 1st member provided in the inner peripheral part of the front end surface, the 1st inclined surface of the 1st member and the 2nd member's 2nd 2 The contact area with the inclined surface can be increased.
In addition to such a configuration, for example, the first inner inclined surface (or the first outer inclined surface) of the first inclined surface of the first member is set to be the second member than the first outer inclined surface (first inner inclined surface). By projecting to the side, the relative movement in the radial direction of the first member with respect to the second member is prevented, whereby the first inclined surface of the first member is circumferentially along the second inclined surface of the second member. When the first member is moved to the second member, it is possible to eliminate the gap generated by the first member reliably moving in the direction away from the second member.
Furthermore, the elastic biasing member is disposed by fitting the first and second peripheral side walls of the first and second members, and one end side of the elastic biasing member is locked to the first peripheral side wall of the first member. In addition, since the other end is locked to the second peripheral side wall of the second member, the fastener can be made compact, and there is no member that protrudes to the outside because the whole is substantially cylindrical. Can provide a safe fastener.

In addition, according to the fastening tool described in claim 2 of the present invention, since the tip end portions of the plurality of anti-rotation protrusions are tapered, the anti-rotation protrusions are formed on the first fastening member (or the second object). It is easy to bite into the fastening member), and the first and second fastened members are fastened and fastened to each other by tightening the fixing connector, whereby the plurality of protrusions of the second member are fastened to the first fastened member (or the second fastened member). Can bite into the component).

Furthermore, according to the fastener according to claim 3 of the present invention, the support member is interposed between the second member and the first fastened member (or the second fastened member). Since the plurality of anti-rotation projections of the second member bite into the first fastened member (or second fastened member) through the hole, the second member is supported by the first fastened member (or second fastened member) via the support member. ) And the fastening tool can be stably attached to the first fastened member (or the second fastened member).

Sectional drawing which shows the state with which the fastener of one Embodiment according to this invention was mounted | worn. The perspective view which shows the fastener of FIG. The side view which looked at the fastener shown in FIG. 2 from the direction shown by arrow A. FIG. 4A is a side view of the first member of the fastener shown in FIG. 2 as viewed from the direction indicated by arrow B in FIG. 2, and FIG. 4B is the first member shown in FIG. 4A. The top view which looked at from the top. 5A is a side view of the second member of the fastener shown in FIG. 2 as viewed from the direction indicated by arrow B in FIG. 2, and FIG. 5B is the second member shown in FIG. 5A. The bottom view which looked at from the bottom. The perspective view which shows the elastic biasing member of the fastener of FIG. The perspective view which shows the supporting member of the fastener of FIG.

  Hereinafter, an embodiment of a fastener according to the present invention will be described with reference to the accompanying drawings. In this embodiment, a description will be given by applying a fixing connector composed of a combination of a metal bolt and a metal nut to an example in which wooden beam members that are fastened members are connected to each other.

  1 to 3, the illustrated fastener 2 is used to fasten two wooden first and second beam members 4 and 6 (which constitute first and second fastened members) to each other. It is done. In this embodiment, a metal bolt 10 and a metal nut 12 are used as the fixing connector 8, a washer 16 is interposed between the head 14 of the bolt 10 and the second beam member 6, and the fastening tool 2. A washer (not shown) is interposed between the nut 12 and the nut 12. That is, as shown in FIG. 1, the shaft portion 18 of the bolt 10 from the second beam member 6 side toward the first beam member 4 via the washer 16 (a male screw portion is provided on the shaft portion 18). Is attached to the shaft portion 18 of the bolt 10 thus inserted, as will be described later, and the nut 12 is inserted through a washer (not shown) placed on the fastener 2. By screwing, the fastening tool 2 is mounted between the first beam member 4 (first fastened member) and the nut 12 as a part of the fixing connector.

  In this embodiment, a housing recess 20 is provided in a part of the first beam member 4, and the fastening tool 2 and the nut 12 are housed in the housing recess 20. You may make it apply, without providing 20. FIG. In this embodiment, the shaft portion 18 of the bolt 10 is inserted from the second beam member 6 side, and the fastening tool 2 and the nut 12 are disposed on the first beam member 4 side. The shaft portion 18 of the bolt 10 may be inserted from the first beam member 4 side, and the fastening tool 2 and the nut 12 may be disposed on the second beam member 6 side.

  The fastener 2 includes a first member 22 located on one side (upper side in FIGS. 1 to 3), a second member 24 located on the other side (lower side in FIGS. 1 to 3), and a second member. An elastic biasing member 26 for elastically biasing the first member 22 relative to the member 24 in the circumferential direction is provided. Referring also to FIG. 4, the illustrated first member 22 is made of a metal material, and has a substantially circular first end wall 28, and the first end wall 28 to the second member 24 (FIGS. 1 to 3). And a first peripheral side wall 30 extending downward), and the first end wall 28 and the first peripheral side wall 30 are integrally formed. The first peripheral side wall 30 is disposed slightly inward in the radial direction from the outer peripheral edge of the first end wall 28, and a first inclined surface 32 extending in the circumferential direction is provided on the tip end surface thereof. Three first inclined surfaces 32 are provided at substantially equal intervals (ie, over an angular range of 120 degrees). Note that two or four or more first inclined surfaces 32 may be provided in the circumferential direction.

  In this embodiment, the first inclined surface 32 includes a first outer inclined surface 34 disposed on the radially outer side and a first inner inclined surface 36 disposed on the radially inner side of the first outer inclined surface 34. A first outer inclined surface 34 is provided on the front end surface of the outer peripheral portion of the first peripheral side wall 30, and a first inner inclined surface 36 is provided on the front end surface of the inner peripheral portion of the first peripheral side wall 30. As shown in FIG. 4 (a), the inner peripheral portion of the first peripheral side wall 30 protrudes toward the second member 24 with respect to the outer peripheral portion, and the first inner inclined surface 36 is larger than the first outer inclined surface 34. Although located on the second member 24 side, the slope shapes of the first outer slope surface 34 and the first inner slope surface 36 are substantially the same, and the slope is downward in the clockwise direction when viewed from above in FIG. (In other words, close to the first end wall 28).

  A central portion of the first end wall 28 is provided with a first through opening 38 through which the shaft portion 18 (see FIG. 1) of the bolt 10 is inserted, and a circular recess is formed around the first through opening 38. 40 is provided, and the above-described washer (not shown) is placed and accommodated in the circular recess 40. In addition, a circular screw accommodating recess 42 is provided at a predetermined portion of the first end wall 28, and a through hole 44 is provided in the screw accommodating recess 42. Furthermore, a pair of notches 46 are provided in the opposing part of the first end wall 28. It should be noted that the pair of notches 46 can be omitted.

  Next, the second member 24 will be described with reference also to FIG. 5. The illustrated second member 24 is formed of a metal material, and includes a substantially circular second end wall 52, and the second end wall 52. A second peripheral side wall 54 extending toward the first member 22 (upward in FIGS. 1 to 3) is provided, and the second end wall 52 and the second peripheral side wall 54 are integrally formed. The second peripheral side wall 54 is disposed slightly inward in the radial direction from the outer peripheral edge of the second end wall 52, and the front end surface thereof extends in the circumferential direction corresponding to the first inclined surface 32 of the first member 22. A second inclined surface 56 is provided. Similar to the first inclined surface 32, three second inclined surfaces 56 are provided at substantially equal intervals in the circumferential direction (that is, over an angle range of 120 degrees). Note that two or four or more second inclined surfaces 56 may be provided in the circumferential direction corresponding to the number of the first inclined surfaces 32.

  In this embodiment, the second inclined surface 56 corresponds to the shape of the first inclined surface 32 described above, and the second outer inclined surface 58 disposed on the radially outer side and the radial direction of the second outer inclined surface 58. And a second outer inclined surface 58 is provided on the distal end surface of the outer peripheral portion of the second peripheral side wall 54, and the second inner inclined surface 60 is the second peripheral side wall. 54 is provided on the front end surface of the inner peripheral portion of 54. As shown in FIG. 5 (a), the outer peripheral portion of the second peripheral side wall 54 protrudes closer to the first member 22 than the inner peripheral portion, and the second outer inclined surface 58 is higher than the first inner inclined surface 60. Although it is located on the first member 22 side, the slope shapes of the second outer sloped surface 58 and the second inner sloped surface 60 are substantially the same, and ascend in the clockwise direction when viewed from above in FIG. (In other words, away from the second end wall 52).

  The second inclined surface 56 (second outer inclined surface 58 and second inner inclined surface 60) of the second member 24 is the first inclined surface 32 (first outer inclined surface 34 and first inner inclined surface of the first member 22). 36), the step 62 of the second peripheral side wall 54 of the second member 24 (the step portion between the adjacent second inclined surfaces 56) and the step of the first peripheral side wall 30 of the first member 22. In the state (state shown in FIG. 1) where the portion 64 (the step portion between the adjacent first inclined surfaces 32) (see FIG. 4) is engaged with each other, the second inclined surface 56 and the first inclined surface 32 are provided. (The second outer inclined surface 58 and the first outer inclined surface 34, and the second inner inclined surface 60 and the first inner inclined surface 36) are in contact with each other, and the first inclined surface 32 and the second inclined surface. 56 supports the load in the axial direction (vertical direction in FIGS. 1 and 3).

  In this embodiment, the inner peripheral part of the first peripheral side wall 30 that defines the first inner inclined wall 36 is located on the radially inner side of the outer peripheral part of the second peripheral side wall 54 that defines the second peripheral side wall 56, and the second Since the outer peripheral portion of the peripheral side wall 54 and the inner peripheral portion of the first peripheral side wall 30 overlap in the radial direction, the relative movement in the radial direction of the first member 22 with respect to the second member 24 is restricted, but the second The relative movement of the first member 22 in the axial direction with respect to the member 24 is allowed, and the first member 22 is relatively movable in a direction approaching and separating from the second member 24.

  In this form, a through-opening 66 is provided at the center of the second end wall 52 corresponding to the through-opening 38 (see FIG. 4) of the first member 22. An insertion opening is formed together with the through opening 38, and the shaft portion 18 (see FIG. 1) of the bolt 10 is inserted through the insertion opening (through openings 38, 66).

  A plurality of (four in this embodiment) anti-rotation protrusions 68 are provided on the end face of the second end wall 52 at intervals in the circumferential direction. Each anti-rotation protrusion 68 is tapered in a conical shape toward the tip. In addition, a predetermined portion of the second end wall 52 is provided with a female screw hole 70 corresponding to the through hole 44 (see FIG. 4) of the screw accommodating recess 42 on the first end wall 28 side, and the first member. The set screw 73 (see FIG. 3) inserted through the receiving recess 42 and the through hole 44 of the first end wall 28 of the 22 is screwed into the female screw hole 70 of the second end wall 52 of the second member 24, and thus By screwing the set screw 73 into the first member 22, relative rotation of the first member 22 with respect to the second member 24 is prevented.

  The second end wall 52 is further provided with a pair of cutout portions 72 corresponding to the pair of cutout portions 46 (see FIG. 4) of the first end wall 28. Note that the pair of notches 72 can also be omitted.

  1 to 3 and 6, in this embodiment, the elastic biasing member 26 includes a coil spring 74, and the first and second peripheral side walls 30 of the first and second members 22 and 24, 54 is fitted and disposed. A first locking portion 76 bent inward in the radial direction is provided at one end of the coil spring 74, and a second locking portion 78 bent inward in the radial direction is provided at the other end. ing. The first and second locking portions 76 and 78 are disposed so as to face each other and extend radially inward.

  In this embodiment, the first locking hole 80 is provided at the base of the first peripheral side wall 30 of the first member 22, and the first locking portion 76 of the coil spring 74 is inserted into the first locking hole 80 to be engaged. It is stopped (see FIG. 3). In addition, a second locking hole 82 (see FIG. 5) is provided at the base of the second peripheral side wall 54 of the second member 24 (a portion substantially corresponding to the first locking hole 80), and the second locking hole 82 is provided. The second locking portion 78 of the coil spring 74 is inserted into and locked (see FIG. 3). In such a mounted state, the coil spring 74 is rotated so that the first member 22 moves relative to the second member 24 in the axial direction (vertical direction in FIGS. 1 and 3). 1 (ie, clockwise when viewed from above in FIGS. 1 and 3 and in the direction indicated by arrow 85 in FIG. 2). The two inclined surfaces 56 (second outer inclined surface 58 and second inner inclined surface 60) and the first inclined surface 32 (first outer inclined surface 34 and first inner inclined surface 36) of the first member 22 are in a pressure contact state. Retained. The coil spring 74 is accommodated in the annular space between the first and second end walls 28 and 52 of the first and second members, and the first and second locking portions 80 and 82 and the like are on the outside. The whole fastener 2 can be made compact without protruding.

  If the above-described compactness is not considered, for example, the first locking portion 76 of the coil spring 74 is bent upward in the axial direction (vertical direction in FIGS. 1 and 3), and the first locking portion 76 is moved. The first locking member is locked to the notch 46 of the first end wall 28 of the first member 22, and the second locking portion 78 is bent downward in the axial direction, for example, and the second locking portion 78 is bent to the second member 24. The second end wall 52 may be engaged with the notch 72.

  In this embodiment, the fastener 2 includes a support member 90 that is interposed between the second member 24 and the first beam member 4. Referring to FIGS. 1 to 3 and 7, the support member 90 is formed of a circular metal thick plate, and a through opening 94 is provided at the center thereof. An insertion opening is formed together with the through openings 38 and 66 (see FIGS. 4 and 5) of the second members 22 and 24, and the shaft portion 18 (see FIG. 1) of the bolt 10 is inserted through the insertion opening. Further, the support member 90 is provided with a plurality of insertion holes 96 around the through opening 94 corresponding to the plurality of anti-rotation protrusions 68 of the second member 24. As shown in FIGS. 1 and 3, the protrusion 68 protrudes outward from the support member 90 through a corresponding insertion hole 96. In the case where the fastening tool 2 is provided on the second beam member 6 (second fastened member) side, the support member 90 is interposed between the fastening tool 2 and the second beam member 6.

  Such a fastening tool 2 is used as follows, for example, when the first and second beam members 4 and 6 are connected and fixed using a fixing connector (bolt 10 and nut 12). Referring mainly to FIG. 1, when the fastener 2 is assembled, the stepped portion 62 of the second peripheral side wall 54 of the second member 24 and the stepped portion 64 of the first peripheral side wall 30 of the first member 22 are in contact with each other. The first and second members 22 and 24 are maintained in contact with each other by screwing the set screw 73 into the female screw hole 70 of the second member 24 through the through hole 44 of the housing recess 42 of the first member 22. Is done.

  In order to fasten the first beam member 4 and the second beam member 6, the beam members 4 and 6 are overlapped with each other so as to have a predetermined positional relationship (specifically, the first beam member 4 is penetrated). And the shaft portion 18 of the bolt 10 from the second beam member 6 side in the state of being overlapped in this manner. And through the through hole of the first member 4. At this time, the washer 16 is interposed between the head 14 of the bolt 10 and the second beam member 6.

  And after attaching the support member 90, the fastening tool 2, and a washer (not shown) to the axial part 18 of the volt | bolt 10 which protrudes in the accommodation recessed part 20 of the 1st beam member 4, in this order, A nut 12 is screwed onto the male thread portion and rotated in the tightening direction and tightened as required. When tightened in this way, as understood from FIG. 1, the tightening force by the nut 12 is transmitted to the fastener 2, and the second member 24 is rotated around the second member 24 via the first member 22 of the fastener 2. The stop projection 68 bites into the first beam member 4 and is fixed, and the second member 24 and the support member 90 are integrated with the first beam member 4.

  After fixing the second member 24 of the fastener 2 to the first beam member 4 in this way, the set screw 73 is removed to release the restraint of the coil spring 74. Thus, the elastic biasing force in the circumferential direction by the coil spring 74 acts on the first member 22, and the first member 22 is held in a state of receiving the elastic biasing action. In this embodiment, since the plurality of detent protrusions 68 bite into the first beam member 4, the second member 24 is held in a fixed state, and the support member 90 is interposed, so that the second member 24 is By being stably supported and held in this manner, the elastic biasing force by the coil spring 74 can be applied to the first member 22 stably.

  In the attached state of the fastener 2, for example, if a slight gap is generated between the first beam member 4 and the support member 90, the second member 24 is caused by the elastic biasing action of the coil spring 74 in the circumferential direction. The first member 22 is slightly rotated relative to the direction indicated by the arrow 85 (see FIG. 2). This rotation is caused by the second inclined surface 56 (second outer inclined surface 58 of the second member 24). The first inclined surface 32 (the first outer inclined surface 34 and the first inner inclined surface 36) of the first member 22 slides in a pressure contact state along the second inner inclined surface 60). Therefore, due to the action of the second inclined surface 56 of the second member 24 and the first inclined surface 32 of the first member 22, the first member 22 moves slightly in the direction away from the second member 24, and this movement causes this The gap is eliminated, and the fastening portion of the first and second beam members 4 and 6 is thus maintained without a gap. As a result, it is possible to suppress the occurrence of adverse effects such as deterioration of earthquake resistance over a long period of time.

  As mentioned above, although one Embodiment of the fastener according to this invention was described, this invention is not limited to this Embodiment, A various change thru | or correction | amendment are possible without deviating from the scope of the present invention.

  For example, in the above-described embodiment, the support member 90 is interposed between the first beam member 4 (or the second beam member 6) and the fastener 2, but the support member 90 may be omitted. In this case, the second member 24 of the fastener 2 is directly fixed to the first beam member 4 (or the second beam member 6).

2 Fastening tool 4 First beam member 6 Second beam member 8 Fixing connector 22 First member 24 Second member 26 Elastic biasing member 28 First end wall 30 First peripheral side wall 32 First inclined surface 34 First Outer inclined surface 36 First inner inclined surface 52 Second end wall 54 Second peripheral side wall 56 Second inclined surface 58 Second outer inclined surface 60 Second inner inclined surface 68 Non-rotating projection 90 Support member

Claims (3)

A fastening tool interposed between one of the first and second fastened members fastened to each other using a fixing connector and a part of the fixing connector,
A first member having a first inclined surface inclined in the circumferential direction; a second member having a second inclined surface corresponding to the first inclined surface of the first member; the first member and the second member; comprises been a resilient biasing member interposed between,
The first member has a first end wall and a first peripheral side wall extending from the first end wall toward the second member, and the first inclined surface is provided on a front end surface of the first peripheral side wall. The first inclined surface includes a first outer inclined surface provided on the outer peripheral portion of the tip surface of the first peripheral side wall and a first inner inclined surface provided on the inner peripheral portion of the tip surface. Configured,
The second member includes a second end wall and a second peripheral side wall extending from the second end wall toward the first member, and the second inclined surface is provided on a front end surface of the second peripheral side wall. The second inclined surface is provided on the outer peripheral portion of the distal end surface of the second peripheral side wall and corresponds to the first outer inclined surface of the first member, and an inner side of the distal end surface. A second inner inclined surface corresponding to the first inner inclined surface of the first member provided on a peripheral portion;
The elastic biasing member is disposed to fit the first and second peripheral side walls of the first and second members, and one end side of the elastic biasing member is the first circumference of the first member. The other end is locked to the second peripheral side wall of the second member,
The first inclined surface of the first member and the second inclined surface of the second member are in contact with each other so as to slide in the circumferential direction, and the elastic biasing member is the first inclined surface of the first member. By the action of the second inclined surface of the surface and the second member, and elastically biased in the circumferential direction so as to move relative to the second member in the direction in which the first member is separated,
The second member is further provided with a plurality of anti-rotation protrusions at intervals in the circumferential direction, and the plurality of anti-rotation protrusions are bitten and fixed to the one of the first and second fastened members. Fastening tool characterized by. The tip portions of the plurality of detent projections are formed tapered, tightening of claim 1, wherein the tapered tip, characterized in that the fixed bites into one of the first and second workpieces Ingredients. A support member is interposed between the second member and the one of the first and second fastened members, and the support member is inserted corresponding to the plurality of detent protrusions of the second member. A hole is provided, and the plurality of anti-rotation protrusions of the second member are bitten and fixed to the one of the first and second fastened members through the insertion hole of the support member. The fastener according to 1 or 2 .

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