JPH0135929Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a fastener for removably fixing a plurality of plate-like members.

(Prior technology) Conventionally, this kind of fastener was
There is a coupling device disclosed in the publication, and this coupling device 101 has plate-like members 113, 11 having aligned holes.
head 103 having an aperture 104 passing therethrough, and a generally parallel head 103 extending axially from both ends of said aperture 104 for insertion into the aligned holes described above; A grommet 102 having a pair of expandable stems 105, 105, a head 107 and a shank 108, and a cam on the side of the shank 108 which can be engaged with the stem 105 of the grommet 102. The bolt 106 has a side surface 109 and is configured to push apart the pair of stems 105, 105 of the grommet 102 when the shaft portion 108 rotates within the grommet 102. A pair of extending and laterally displaced retaining pieces 1 that can be freely yielded
10 is provided and once the bolt 106
The fitting 101 has a groove 111 that can be engaged with the holding piece 110 to prevent the bolt 106 from slipping out of the grommet 102 when the bolt 106 is inserted therein. Further, at the initial stage, the lower ends of the bolts 106 are connected to the grommet 102 of the coupling tool 101 on both sides of the opening 104 ends of the head 103 of the grommet 102 by connecting webs 112 that are easy to cut.

(Problem to be Solved) Therefore, in the conventional coupling tool 101, since the grommet 102 and the bolt 106 are initially integrated via the connecting web 112, it is difficult to connect the two members 102 and 106. It is not possible to insert and connect the grommet 102 and the bolt 1 without using a resin hammer or the like.
There was a problem in that even if it was desired to separate the two members 102 and 106 after they were connected, the two members 102 and 106 could not be removed.

The present invention was developed to solve the above-mentioned conventional problems, and it is possible to connect the male member to the insertion hole of the female member with a single touch by pressing it with your finger, thereby reliably fixing multiple plate-like members. It is an object of the present invention to provide a fastener that can maintain a female member and a male member integrally connected without separating even after removal, and can easily release the connection between both members. That is.

(Means for Solving the Problems) In order to solve the above-mentioned technical problems, the present invention is a fastener made of synthetic resin etc. that removably fixes a plurality of plate-like members, and which has a plurality of corner parts on a board. a female member having a plurality of locking legs extending therethrough and having a plurality of locking legs provided with protrusions on the free end side of the inner surface along the periphery of a corner portion of the insertion hole; and insertion of the female member from the lower surface of the head. A shaft portion having a substantially warhead-shaped cross section is provided vertically, and has a groove portion that can be inserted into the hole and engages with the protrusion of the locking leg, and a rib that can be fitted into the split groove between the locking legs. It consists of two male members, and the shaft portion of the male member is rotatable with respect to the insertion hole to a position where its rib abuts the inner side of the locking leg and a position where it fits into the split groove, and The rib exists in the fastener configured such that the shoulder portion of the rib in the groove between the locking legs can engage with the locking surface formed between the bases of the locking legs.

(Embodiment) Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 8. In the figures, 1 is the entire fastener, and the female member 2 and the male member are made of synthetic resin or the like. It is composed of a member 14.

Reference numeral 2 denotes the above-mentioned female member, which includes a substantially flat board 3 and a plurality of locking legs 6 (in this example, 4
The locking leg 6 is formed so that it can be inserted into substantially rectangular mounting holes 24 and 25 formed through the plurality of plate-like members 22 and 23 in an aligned manner. There is. A circular recess 4 into which the head 20 of the male member 14 is fitted is formed on the upper surface of the base plate 3 of the female member 2, and an insertion hole 4 into which the shaft 15 of the male member 14 can be inserted is formed in the center of the recess 4. A hole 5 is provided therethrough. The insertion hole 5 is formed, for example, in a substantially square shape having a plurality of corner portions R, and the corner portion R is provided with an arcuate surface r.
A locking leg 6 is provided vertically on the lower surface of each corner R in a corresponding manner.

Reference numeral 6 denotes the above-mentioned locking leg, which is formed along the arcuate surface r of the corner portion R. Its base side is formed in an arc shape with a predetermined thickness, and the outer side of the locking leg 6 is formed along the arcuate surface r of the corner portion R. The arcuate surface 7 is formed into substantially the same arcuate surface up to the lower end. Further, the inner arcuate surface 8 is formed with a slope 9 that slopes downward toward the axis of the insertion hole 5 from the base side, and a vertical surface 10 is formed on the lower end side of the inner arcuate surface 8 . A protrusion 11 is provided protruding along the inner peripheral edge near the lower end. A split groove 12 is formed between each of the locking legs 6 formed in this manner up to the lower surface of the center of each side of the insertion hole 5, and a locking surface 13 is formed on the lower surface of the center, respectively. The locking leg 6 is formed so as to be elastically displaceable in an expanded shape centering on its base end side.

14 is the above-mentioned male member, and this male member 1
4 is formed of a shaft portion 15 that can be inserted into the insertion hole 5 of the female member 2 and a head portion 20 having a larger diameter than the insertion hole 5.

Reference numeral 15 denotes a shaft portion, and this shaft portion 15 has a predetermined diameter, a tapered lower end portion, and a plurality of shaft portions (four in this example) along the outer circumferential longitudinal direction of a shaft diameter portion 16 whose cross section is approximately warhead-shaped. A rib 17 is integrally formed to protrude.
The ribs 17 are protruded from the outer periphery of the shaft diameter portion 16 at 90 degree intervals and have an arcuate cross section, and each rib 17 is inscribed in the arcuate surface r of the corner R of the insertion hole 5. It is formed so that it can be inserted into 5. In addition, an insertion hole 5 is provided near the lower end of each rib 17.
When the locking leg 6 is inserted into the inner arcuate surface 8 of the locking leg 6, grooves 18 are formed in the locking leg 6 so as to be able to engage with the protrusions 11 protruding from the inner arcuate surface 8. Further, the upper end side of this rib 17 forms a horizontal shoulder portion 1 at a predetermined distance h from the lower surface of the head.
9 is formed. Further, the width of the rib 17 is set to be such that it can be fitted into the groove 12 between the locking legs 6. The head 20 is formed to have a larger diameter than the insertion hole 5 and can be fitted into a recess 4 recessed in the upper surface of the board 3, and has a cross-shaped groove in the center of the upper surface into which a Phillips screwdriver is inserted, for example. 21 is recessed.

When the male member 14 formed in this manner is inserted into the insertion hole 5 of the female member 2, each of the locking legs 6 of the female member 2 is elastically expanded by the ribs 17, and in this state, the male member 14 is inserted into the insertion hole 5 of the female member 2. When rotated 90 degrees, male member 1
Each of the ribs 17 of 4 is fitted between the grooves 12 between the respective locking legs 6, and the shoulder portion 19 of the rib 17 is in a position to engage with the locking surface 13, so that deviation in the pulling direction is prevented. It is blocked.

Next, the operation and effects of this embodiment configured as described above will be explained.

Now, the fastener 1 of this example includes a plurality of plate-like members 22, 2.
3 is made of synthetic resin or the like, and has a substantially rectangular insertion hole 5 having four corner portions R formed through the substrate 3, and the corner portions R of the insertion hole 5 are A female member 2 has four locking legs 6 vertically provided with protrusions 11 on the free end side of the inner arcuate surface 8 along the circumference of the arcuate surface r, and a female member 2 that can be inserted into the insertion hole 5 from the lower surface of the head 20. It has a groove 18 that engages with the protrusion 11 of the locking leg 6, and a dividing groove 12 between the locking legs 6.
It consists of two members, a male member 14, which has a shaft part 15 having a substantially warhead-shaped cross section and a rib 17 that can be fitted into the male member 14, and the shaft part 15 of the male member 14 is rotatable with respect to the insertion hole 5. The ribs 17 of the coaxial portion 15 are configured so that shoulder portions 19 of the ribs 17 can engage with the locking surfaces 13 between the locking legs 6 in the grooves 12 between the locking legs 6. Therefore, the plate member 22,
23, first, install the mounting hole 2 of the plate member.
4 and 25 are aligned, and the locking legs 6 of the female member 2 are inserted along the corners of the holes 24 and 25 to abut the substrate 3 in an overlapping manner. After that, the insertion hole 5 of the female member 2
When the rib 17 formed on the shaft portion 15 of the female member 15 is inserted along the arcuate surface r of the corner portion R of Therefore, the rib 17 is securely brought into contact with the inner circular arc surface 8 of the locking leg 6. and,
When the male member 14 is further pressed with a finger, the inner circular arc surface 8 is formed with a slope 9 that slopes downward from the base side toward the axis of the insertion hole 5. It then expands outward. When the protrusion 11 formed on the vertical surface 10 continuously formed on the lower end side of the slope 9 and the groove 18 formed on the rib 17 are combined, the head 20 of the male member 14 is connected to the substrate 3. The shoulders 19 of the ribs are positioned below the bottom surface of the board 3, and the plate members 22 and 23 are inserted between the board 3 and the locking legs 6 due to the elastic force of the locking legs 6. Fixed.

Note that the engagement between the groove 18 and the protrusion 11 is temporary, and in this state, it can be easily removed by pushing the tip of the male member 14 from below, and the plate-like members 22 and 23 can be fixed. Can be canceled.

Next, when removing the fixation of the plate-shaped member, the male member 1
When a Phillips screwdriver is inserted into the cross-shaped groove 21 formed on the upper surface of the head 20 of the head 4 and rotated 45 degrees, the rib 17 and the locking leg 6 are disengaged from each other and the rib 17 is rotated 45 degrees.
is located in the split groove 12 and the locking leg 6 has been expanded.
is elastically restored to its original state, and by pulling out the fastener 1, the fixation of the plate members 22 and 23 is released.
In this pulled out state, the rib 17 of the male member 14 is fitted into the split groove 12 of the female member 2, and the shoulder portion 19 of the rib 17 is in a position to engage with the locking surface 13, so that the rib 17 of the male member 14 is pulled out in the pulling direction. is prevented and the male member 14
and female member 2 are integrally engaged. Also,
When using the detached fastener 1, insert it into the mounting holes 24 and 25 of the plate members 22 and 23 in the integrally engaged state and rotate the male member 45 degrees with a Phillips screwdriver. The rib 17 is the locking leg 6
At the same time, the groove 18 of the rib 17 and the protrusion 11 of the locking leg 6 are engaged, and the plate-like members 22 and 23 are fixed.

In this way, after removing the fastener of this example, the male member 1
4 and the female member 2 are not separated and can maintain an engaged state, and there is no possibility of losing one of them.Furthermore, when using the plate-like members 22 and 23, it can be easily attached. Can be fixed. Further, since the male member 14 and the female member 2 are separable, the female member 2 can be easily replaced if the locking leg 6 is damaged or the like.

In the above embodiment, the insertion hole 5 of the female member 2 and the attachment holes 24, 25 of the plate-like members 22, 23 are
is formed into a substantially square shape, and ribs 17 are formed at 90 degree intervals on the outer periphery of the shaft diameter portion 16 of the male member 14. However, the present invention is not limited to this, and for example, the fastener shown in FIG. Female member 2 like 26
A substantially equilateral triangular insertion hole 29 is provided in the substrate 28 of No. 7, and a locking leg 6 is provided at the corner R.
It is also possible to form ribs 32 on the outer periphery of the shaft diameter portion 31 of the male member 30 at intervals of 120 degrees. Also, the first
Like the fastener 33 shown in FIG. It is also possible to form ribs 39 on the outer periphery of 38 at intervals of 72 degrees. Further, FIG. 17 shows an application example of the above-mentioned fastener, in which reference numeral 40 is an instrument cluster which is a part of an automobile, for example, and an insertion hole 5 is provided in the corner of the instrument cluster.
A locking leg 6 is integrally formed in each corner portion R of. Therefore, the locking leg 6 provided on this cluster 40 is inserted into the mounting hole 4 formed through the steel plate body 41.
By inserting the male member 14 into the hole 5 and pressing it with your finger, the locking legs 6 can be expanded and securely fixed with one touch. In addition, when removing, by rotating each male member 14 by 45 degrees, the abutting engagement between the rib 17 and the locking leg 6 is released, the rib 17 is located in the split groove 12, and the expanded locking leg 6 is released. The legs 6 are elastically restored to their original state and the cluster 40 can be easily removed.
After removal, the male member 14 is integrally engaged with the cluster 40, so when it is installed next time, the locking leg 6 is inserted into the steel plate body 41 and the male member is fixed by rotating 45 degrees. I can do it.

(Effects of the invention) The present invention is a fastener made of synthetic resin or the like that removably fixes a plurality of plate-like members, and includes an insertion hole having a plurality of corner portions formed through the substrate.
a female member having a plurality of locking legs vertically provided with protrusions on the inner free end side along the periphery of the corner portion of the insertion hole; and a female member that can be inserted into the insertion hole of the female member from the lower surface of the head and said lock Consisting of two male members, each having a vertically extending shaft having a warhead-shaped cross section and having a groove that engages with the protrusion of the leg and a rib that can be fitted into the groove between the locking legs. , the shaft portion of the male member is rotatable with respect to the insertion hole between a position where the rib abuts the inner side of the locking leg and a position where the rib fits into the split groove; By configuring the groove so that the shoulder portion of the rib can engage with the locking surface formed between the bases of the locking legs, the female member can be inserted into the mounting hole of the plate-shaped member, and the female member can be inserted into the insertion hole of the female member. By inserting the male member into the male member, the ribs provided on the male member open and widen the locking legs hanging down from the corners of the insertion hole, and the locking leg can be securely fixed with one touch. In addition, when removing the fixation of the plate-shaped member, when the male member is rotated by a predetermined angle, the contact between the rib and the locking leg is released, the rib is positioned in the split groove, and the locking leg that was opened and expanded is returned to its original position. The plate-like member is elastically restored to the state shown in FIG. In this pulled out state, the rib of the male member is fitted into the groove of the female member, and the shoulder of the rib is in a position where it engages with the locking surface, preventing it from deviating in the pulling direction. The male member and the female member are integrally engaged with each other, and after removal, the male member and female member are not separated and can maintain an engaged state, so that there is no possibility of losing one or the other, and furthermore, it can be reused. At times, the plate member can be easily inserted and fixed. Further, since the male member and the female member are separable, if the locking leg is damaged, the female member can be easily replaced.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an exploded perspective view of the fastener, FIG. 2 is a front view of the female member, FIG. 3 is a top view, and FIG. 4 is a bottom view, and FIG. 5 is a cross-sectional view taken along the - line in FIG. 2, FIG. 6 is a cross-sectional view taken along the - line in FIG. 3, FIG. 7 is a front view of the male member, FIG. 8 is a bottom view, and FIG. Fig. 10 is a bottom view of the state in which the female member is joined and the plate-like member is fixed, Fig. 11 is a sectional view taken along the - line of Fig. 10, and Fig. 12 is the state shown in Fig. 10. A bottom view showing the male member rotated by 45 degrees, FIG. 13 is a partial sectional view taken along the line - in FIG. 12, FIG. 14 is a partial sectional view taken along the line - in FIG. 12, and FIGS. 15 and 16. 17 is a bottom view showing another aspect of the fastener, FIG. 17 is a perspective view showing an application example of the fastener, and FIGS. 18 to 20 are conventional examples. 1, 26, 33...fastener, 2, 27, 34...
...Female member, 3, 28, 35... Board, 5, 29,
36... Insertion hole, 6... Locking leg, 8... Inner circular arc surface, 11... Projection, 12... Division groove, 13... Locking surface, 14, 30, 37... Male member, 15... ...Shaft part, 17, 32, 39...Rib, 18...Groove part,
19... Shoulder part, R... Corner part, 22, 23...
...Plate member.

Claims (1)

[Scope of utility model registration request] A fastener made of synthetic resin or the like that removably fixes a plurality of plate-like members, in which an insertion hole having a plurality of corners is provided in a substrate, and an inner free end is inserted along the periphery of the corner of the insertion hole. A female member having a plurality of locking legs provided with protrusions on the side thereof and a groove portion that can be inserted into the insertion hole of the female member from the lower surface of the head and that engages with the protrusion of the locking leg, and It consists of two male members each having a vertically disposed shaft portion having a roughly warhead-shaped cross section and a rib that can be fitted into the groove between the locking legs, and the shaft portion of the male member is connected to the insertion hole. The rib is rotatable between a position where the rib abuts the inside of the locking leg and a position where it fits into the split groove, and the shoulder portion of the rib is at the base of the locking leg in the split groove between the locking legs. A fastener configured to be able to engage with a locking surface formed between the two.