JP5147792B2 - Fastener - Google Patents

Description

  According to the present invention, the insertion portion is inserted into the through hole formed in the fastening object to the insertion end position, so that the fastening object is fastened to the fastening object via the fastener. It is related with the improvement of the fastener used in order to connect the member of these, or to fasten the several fastening target object piled up so that the said through-hole may be connected.

  Locking pieces that are elastically engaged with the mounting holes at positions completely inserted through the mounting holes are provided on both sides of the insertion center line, and operation pieces are provided inside the pair of locking pieces, respectively. In addition, there is a clip in which a pin is inserted through an operation hole formed on the front side of the clip and the operation piece is pressed so that the engagement piece is bent inward to release the engagement with the attachment hole. . (See Patent Document 1)

JP 2005-351462 A

  The main problem to be solved by the present invention is that in this type of fastener (clip), an operation of bending one of the pair of elastic engagement portions provided in the insertion portion to the through hole of the fastening object is performed. It is in the point which can cancel | release simultaneously the engagement to the through-hole of both elastic engagement parts only by performing.

In order to achieve the above object, in the present invention, the fastener includes a base portion and an insertion portion to a through hole formed in the object to be fastened, and the insertion portion is inserted into the through hole. The elastic engagement part which forms a part of the insertion part is allowed to be bent inward, and the elastic engagement part is elastically restored at the insertion end position to fasten the base part and the elastic engagement part. It is a fastener that is fastened to the fastening object as if the object is sandwiched,
The elastic engagement portions are provided on both sides of the insertion center line of the insertion portion, respectively,
When one of the elastic engagement portions is bent inward, it is provided with a linking means for following the other elastic engagement portion.

  Such a fastener is provided with elastic engaging portions with respect to the hole edge on the insertion destination side of the through hole on both sides of the insertion center line of the insertion portion, but the fastener includes the linkage means. By the inward bending operation with respect to one of the pair of elastic hooking portions, the other elastic hooking portion can be caused to be bent inward at the same time, so that the fastening state to the object to be fastened is one. Canceled by action.

  The linkage means is assembled from an linkage member configured so that one end portion thereof is rotatably attached to one elastic engagement portion and the other end portion is rotatably attached to the other elastic engagement portion, and bendable at a central portion. It is also possible that the center portion of the linkage member moves in a direction along the insertion center line of the insertion portion while causing the bending when the inward bending occurs in one elastic engagement portion. is there. In this case, a guide groove for receiving the guided portion at the center of the linkage member may be formed in the insertion portion.

  When the insertion part is inserted into the through hole of the fastening object and one of the pair of elastic engagement pieces of the fastener fastened to the fastening object is bent inward, the link member The central part is moved in a direction along the insertion center line. When the central portion is moved in this way, the linking member is bent in a direction in which both ends thereof are brought close to each other, and therefore the other of the pair of elastic engagement pieces is also bent inward. Accordingly, only by performing an operation of bending one of the pair of elastic engagement pieces inwardly from the above-mentioned fixed state, the other elastic engagement piece is also bent inwardly, and the fastener for the object to be fixed is Fastening can be released.

  An opening portion may be formed on the side portion of the base portion, and a part of the elastic engagement portion may be allowed to face the opening portion so as not to protrude from the side portion.

  In this case, the tip of a tool such as a screwdriver is inserted into the base through the open portion, and one of the pair of elastic engagement portions is easily and reliably inserted by pressing a part of the elastic engagement portion. It can be bent in the direction. Also, the operation position for performing this operation is clear. Moreover, since a part of this elastic hooking part is not protruded outside from the said open part, the situation which causes the elastic hooking part to be bent accidentally will not arise.

  In the fastener according to the present invention, the fastening state to the fastening object is pressed from the direction crossing one of the pair of elastic engagement portions provided in the insertion portion with respect to the insertion center line of the insertion portion. Then, by simply performing an operation to bend it, it is possible to simultaneously release the engagement of both elastic engagement portions to the through holes and release them with one action.

FIG. 1 is an exploded perspective view of the fastener. FIG. 2 is a perspective view of a state in which the insertion portion and the base portion constituting the fastener are cut in half from the center position on the width side. FIG. 3 is a perspective view showing a state in which the fastener is cut in half from the center position on the width side. FIG. 4 is a plan view of the fastener. FIG. 5 is a right side view of the fastener. FIG. 6 is a front view of the fastener. FIG. 7 is a front view showing a use state of the fastener. FIG. 8 is a cross-sectional view showing the use state of the fastener in a cross-section at the position AA in FIG. FIG. 9 is a cross-sectional view showing a state in which one of the pair of elastic engagement portions is bent inward from the state of FIG. 8 and operated.

  Hereinafter, typical embodiments of the present invention will be described with reference to FIGS. The fastener C according to this embodiment is fastened to the fastening object P by inserting the insertion portion 2 through the through hole Pa formed in the fastening object P to the insertion end position. A plurality of fastening objects P, P... That are overlapped with each other by connecting another member P ′ to the fastening object P via the tool C or by connecting the through holes Pa to each other. It is used to match.

  In this embodiment, the fastener C includes the base portion 1 having the attachment portion 10 for the other plate-shaped member P ′ and the insertion portion 2, and the base portion 1 is attached to the base portion 1. The insertion part 2 is inserted through the through hole Pa provided in the plate-like fastening object P from the state in which the part 10 is attached to the other member P ′, so that the other part via the fastener C is applied. The member P ′ and the fastening object P are configured to be fastened together. The fastener C includes elastic engagement portions 20 with respect to the hole edge on the insertion destination side of the through hole Pa on both sides of the insertion center line x of the insertion portion 2, and the pair of elastic engagement portions 20. , 20 is provided with a structure that causes the other elastic engagement portion 20 to bend inward at the same time by an inward bending operation with respect to one of the And the fastening object P and the other member P ′ can be released from each other via the fastener C.

  In this embodiment, the insertion portion 2 is configured to have a rectangular tube shape. One end of the cylinder 21 serving as the insertion head of the insertion section 2 is closed, while the other end 22 of the cylinder is opened. The tube end 21 may be opened. The insertion portion 2 is configured such that the cross-sectional inner and outer shape in the direction orthogonal to the insertion center line x is substantially rectangular at any position of the insertion center line x. That is, this insertion part 2 is provided with two wide side parts 23 and 23 and two narrow side parts 24 and 24. And this insertion part 2 has the wide side of the insertion part 2 along the length side of this through-hole Pa with respect to the through-hole Pa which makes a hole shape rectangular shape, Therefore Insertion part in the width side of this through-hole Pa 2 is inserted along the narrow side.

  The elastic hooking portion 20 is formed on each of two narrow side portions 24 and 24 of the insertion portion 2. The elastic hooking portion 20 includes a hooking convex portion 20a on the outer surface portion, and the distance between the top portions 20b of the hooking convex portions 20a of the pair of elastic hooking portions 20 and 20 is larger than the length of the through hole Pa. . As a result, the insertion of the insertion portion 2 into the through hole Pa is allowed by bending the elastic engagement portion 20 forming a part of the insertion portion 2 inward along with the insertion. In the illustrated example, the hooking convex portion 20a includes an inclined surface 20c that gradually increases from the insertion head side of the insertion portion 2 toward the top portion 20b, and a hooking surface 20d that faces the base portion 1 side. The insertion of the insertion portion 2 into the through hole Pa is allowed smoothly by gradually bending the elastic engagement portion 20 inward by sliding contact with the hole edge of the through hole Pa of the inclined surface 20c. Yes.

  In the illustrated example, the elastic engagement portion 20 is provided with two split grooves 24 a and 24 a along the insertion direction of the insertion portion 2 on the narrow side surface portion 24 of the insertion portion 2. It is comprised by a part of side part 24 of this. The dividing groove 24 a is formed so as to start from a position at a slight distance from the cylinder one end 21 that is the insertion head of the insertion portion 2 and reach the cylinder other end 22. Further, the free end of the elastic hooking portion 20 extends from the other end 22 of the insertion portion 2 toward the insertion front side of the insertion portion 2. Operation on the free end side of the elastic hooking portion 20 with an interval between the outer surface portion and the hooking convex portion 20a and a protruding dimension from the outer surface portion larger than that of the hooking convex portion 20a. A convex portion 20e is formed.

  On the other hand, the base portion 1 is configured to have an outer casing shape around the other end 22 of the insertion portion 2. The base portion 1 is configured to have a size that does not enter the through hole Pa, and a hooking surface 11 in a direction perpendicular to the insertion center line x is formed on the connection side of the base portion 1 with the insertion portion 2. ing. In the illustrated example, the surface of the elastic engaging portion 20 that faces the engaging convex portion 20 a of the operating convex portion 20 e is positioned substantially on the same surface as the catching surface 11. (Fig. 8)

  An open portion 12 is formed on a side portion of the base portion 1 that is located on the narrow side surface portion 24 side of the insertion portion 2. Then, a part of the elastic engagement portion 20, in the illustrated example, faces the opening portion 12 so as not to protrude from the side portion of the base portion 1 to the side. Specifically, in the center of the side portion located on the narrow side surface portion 24 side of the insertion portion 2 in the base portion 1, a part of the catching surface 11 is cut out through the inside and outside of the base portion 1. An open portion 12 is formed.

  Further, in this embodiment, the mounting portion 10 that protrudes outward in a direction orthogonal to the insertion center line x is formed on the side portion of the base portion 1 that is located on the side of the wide side portion 23 of the insertion portion 2. Is formed. A screw through hole 10a is formed in the mounting portion 10, and by inserting a screw (not shown) through the through hole 10a into one surface of the other member P ', the screw is inserted from one surface of the other member P'. The fastener C is attached to the other member P ′ in such a manner that the portion 2 is protruded.

  When the insertion portion 2 of the fastener C is inserted into the through hole Pa of the fastening object P to the insertion end position, that is, the top portion 20b of the engagement protrusion 20a of the elastic engagement portion 20 is a hole on the insertion destination side of this through hole Pa. If the elastic engagement part 20 bent inward as described above is allowed to be elastically returned when entering the edge, the elastic engagement part 20 is allowed to return between the engagement convex part 20a and the base part 1 when this elastic return is made. The attachment object P is sandwiched, and the attachment of the fastener C to the attachment object P is completed.

 Further, the fastener C according to this embodiment is provided with linkage means 3 that causes the other elastic engagement portion 20 to follow when the inward bending occurs in one elastic engagement portion 20. .

  The fastener C according to this embodiment includes elastic engagement portions 20 on both sides of the insertion center line x of the insertion portion 2 with respect to the hole edge on the insertion destination side of the through hole Pa. 3 causes the other elastic engagement portion 20 to bend inward simultaneously by the inward bending operation with respect to one of the pair of elastic engagement portions 20, 20, and is fastened to the fastening object P. The state is released with one action.

  In this embodiment, the linking means 3 is formed by a linking member 30 in the base 1 and the insertion portion 2 that links the movements of the pair of elastic engagement portions 20 and 20. The linking member 30 is configured such that one end portion thereof is rotatably attached to one elastic engagement portion 20 and the other end portion is rotatably attached to the other elastic engagement portion 20 and bendable at a central portion 31. ing.

  In the illustrated example, a guide groove 23a is further formed in the insertion portion 2 to accommodate the guided portion 31a of the central portion 31 of the linking member 30. The guide groove 23a causes the elastic engagement portion 20 to face the inward direction. When bending occurs, the central portion 31 of the linkage member 30 moves in a direction along the insertion center line x of the insertion portion 2 while causing the bending.

  The central portion 31 of the linking member 30 is configured to have an axial shape. The length of the central portion 31 is configured to be larger than the dimension between the inner surfaces of the pair of wide side surface portions 23, 23 of the insertion portion 2. Each of the pair of wide side surface portions 23, 23 of the insertion portion 2 is formed with a guide groove 23a along the insertion center line x at the center portion 31 thereof. The guide groove 23a is a split groove that bisects the wide side surface portion 23 of the insertion portion 2 that starts from the other end 22 of the insertion portion 2 and continues toward the cylinder end 21 side. One end of the central portion 31 is inserted into a guide groove 23a formed in one of the pair of wide side surface portions 23, 23 as the guided portion 31a, and the other end is also used as the guided portion 31a. It is made to insert in the guide groove 23a formed in the other of the side parts 23 and 23 of this.

  The linking member 30 includes wing bodies 32 on both sides of the center portion 31. One end of each wing body 32 is connected to the central portion 31 via a thin hinge portion 33 between both ends of the central portion 31. Each wing body 32 is bifurcated on the side opposite to the side connected to the central portion 31 and has shaft holes 32b at the ends of both branch portions 32a and 32a.

  On the other hand, the base 1 of the operating projection 20e, which is the free end of the elastic engagement portion 20, has a thickness along the width side of the insertion portion 2 between the branch portions 32a of the wing body 32 of the linkage member 30. It is configured to have a dimension that fits in a small gap. At the same time, shaft protrusions 20f that are received in the shaft holes 32b are formed on both side portions of the base portion 1 of the operation convex portion 20e along the length side of the insertion portion 2.

  In this embodiment, the shaft hole 32b is formed between the branch portion 32a of one wing body 32 of the linking member 30 and the base 1 of one of the operating projections 20e of the pair of elastic engagement portions 20 and 20. The shaft projection 20f is combined and the base portion 1 of the other operation convex portion 20e of the pair of elastic engagement portions 20, 20 is connected between the branch portion 32a of the other wing body 32 of the linkage member 30. In this state, the center portion 31 is inserted into the guide groove 23a, and the linking member 30 is built in the base portion 1 and the insertion portion 2 in this state. Further, in a state where neither of the pair of elastic engagement portions 20, 20 is inwardly bent, the linking member 30 has the central portion 31 at the entrance side of the guide groove 23 a, that is, the tube of the insertion portion 2. It is located at the other end 22 side, and is bent slightly around the central portion 31 so that the tube end 21 side of the insertion portion 2 is bent outward. (Fig. 8)

  The insertion part 2 is inserted into the through hole Pa of the fastening object P, and one of the pair of elastic engagement parts 20 and 20 of the fastener C fastened to the fastening object P is bent inward. When the operation is performed, the guided portion 31a of the central portion 31 of the linking member 30 is accommodated in the guide groove 23a, so that the central portion 31 of the linking member 30 is moved in a direction along the insertion center line x. . When the central portion 31 is moved in this way, the linkage member 30 is bent in a direction in which both ends thereof are brought close to each other, and therefore the other of the pair of elastic engagement portions 20 and 20 is also bent inward. (FIG. 9) Thereby, only the operation of bending inwardly one of the pair of elastic hooking portions 20 and 20 from the above-mentioned fastening state, the other elastic hooking portion 20 is also bent inward at the same time. The fastening of the fastener C to the fastening object P can be released.

  Further, in the illustrated example, guide pieces 13 that protrude from the other end 22 of the insertion portion 2 to the front side of the insertion portion 2 are formed on both sides of the entrance of the guide groove 23 a inside the base portion 1. One of the side portions of the guide piece 13 is integrated with the inner wall of the base portion 1. Further, an inclined surface 13a is formed at the protruding end of the guide piece 13 so as to widen the distance between the pair of guide pieces 13 and 13 as the distance from the entrance side of the guide groove 23a increases. In the illustrated example, when the linking member 30 is combined on the base 1 and the insertion portion 2 side, the guided portion 31a is inserted between the pair of guide pieces 13 and 13 so that the guided portion 31a is The guide groove 23a can be smoothly inserted.

  Further, in the illustrated example, guide grooves 32c that facilitate introduction into the shaft projections 20f into the shaft holes 32b are formed inside the branch portions 32a of the wing bodies 32 of the linking member 30, respectively. The guide groove 32c is formed between one side edge of the branch portion 32a and the shaft hole 32b, and is configured to become shallower as it approaches the shaft hole 32b, and is on the base 1 and insertion portion 2 side. When the linkage member 30 is combined, the shaft protrusion 20f is inserted into the guide groove 32c, and the base 1 of the operation convex portion 20e of the elastic engagement portion 20 is inserted between the pair of branch portions 32a and 32a. The shaft protrusion 20f is guided to the position of the shaft hole 32b while elastically deforming the pair of branch portions 32a and 32a outwardly mainly by the inclination of the guide groove 32c, and the shaft protrusion 20f is moved into the shaft hole 32b by elastic return there. Get in.

  Further, in this embodiment, the elastic engagement portion 20 is partially exposed to the opening portion 12 formed on the side portion of the base portion 1 so as not to protrude from the side portion. Then, the tip D of a tool such as a screwdriver is inserted into the base 1 through the opening 12, and the protruding end of the operation convex portion 20e in the illustrated example is pressed in a direction perpendicular to the insertion center line x. By operating, one of the pair of elastic engagement portions 20 and 20 can be bent inward easily and reliably. (FIG. 9) Further, the operation position for performing this operation is clear. In addition, since a part of the elastic hooking portion 20 is not projected outward from the opening portion 12, there is no possibility of causing the elastic hooking portion 20 to be bent by mistake.

  In the illustrated example, at the protruding end of the operation convex portion 20e, an inclined surface portion 20g that is gradually inclined toward the insertion center line x toward the insertion head side of the insertion portion 2 is formed. A protruding portion 20h is formed on the side of the operating convex portion 20e that faces the engaging convex portion 20a. The protruding portion 20h forms a step portion with the inclined surface portion 20g. It is easy to settle at the protruding end of the convex portion 20e.

  In addition, provision of this characteristic to the location which should be provided with the elastic deformation characteristic in the fastener C demonstrated above can be easily implement | achieved by making this fastener C into the molded article using a synthetic resin material. .

DESCRIPTION OF SYMBOLS 1 Base part 2 Insertion part 20 Elastic engagement part 3 Linking means P Fastening object Pa Through hole x Insertion centerline C Fastening

Claims (3)

A base and an insertion portion to a through-hole formed in the object to be fastened, and the insertion of the insertion portion into the through-hole is bent inward with an elastic engagement portion forming a part of the insertion portion And a fastener that is fastened to the fastening object by sandwiching the fastening object between the base and the elastic engagement part by elastic return of the elastic engagement part at the insertion end position. And
The elastic engagement portions are provided on both sides of the insertion center line of the insertion portion, respectively,
When the inward bending occurs in one elastic engagement portion, it is provided with linkage means for following the other elastic engagement portion ;
The linking means includes one end portion rotatably assembled to one elastic engagement portion, the other end portion rotatably assembled to the other elastic engagement portion, and a link member configured to be bent at the center portion. It is configured, and when the inward bending of one elastic engagement portion occurs, the central portion of the linkage member moves in a direction along the insertion center line of the insertion portion while causing the bending. Fastening characterized by.   The fastener according to claim 1, wherein a guide groove is formed in the insertion portion to accommodate the guided portion at the center of the linkage member.   The open portion is formed on the side portion of the base portion, and a part of the elastic hooking portion faces the open portion so as not to protrude from the side portion. Item 3. The fastener according to item 2.

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