JP7050722B2 - Stud holder - Google Patents

Description

The present invention has an insertion hole for inserting a stud and a locking piece provided corresponding to the insertion hole among the holders fixed to the mounting surface such as a panel. The present invention relates to a holder for a stud that is fixed by engaging the tip claw of the stud with a screw or a circumferential groove of the stud.

8A and 8B show a stud holder (connector) disclosed in Patent Document 1, FIG. 8A is a cross-sectional view showing the overall configuration of the holder, and FIG. 8B is a state in which the holder is engaged with and fixed to the stud. It is sectional drawing of the main part shown. The holder in the figure is composed of a mounting portion (connecting tool main body) 2 fixed to a stud 4 erected on the panel 18, and a holding portion 3 that elastically restrains and supports a pipe or the like in the grip portion 16. The mounting portion 2 has an insertion hole 5 into which the stud 4 is inserted from the mounting surface side, and locking pieces 6 to 9 provided corresponding to the insertion hole 5. Each of the locking pieces 6 to 9 is partitioned by providing grooves (slits) 10 to 12 on the peripheral wall that partitions the insertion hole 5, and has a tip claw. The groove 10 and the groove 12 are parallel vertical grooves kept at a predetermined distance, and the groove 11 is an inclined groove. The upper locking pieces 6 and 8 and the lower locking pieces 7 and 9 are almost opposite to each other, but their heights or tips are slightly offset according to the screw lead angle of the stat 4. The tip claws are respectively engaged with the screw valleys of the stud 4.

Jitsufuku No. 3-145777

In the holder of Document 1 above, each locking piece (tip claw) is formed so as to be inclined at the same angle as the lead angle of the screw of the stud, so that the coating film on the surface of the stud is locked when pushed into the stud. It is stated that the risk of being damaged by the tip claw can be eliminated while maintaining the adhesive force to the stud. However, in such a holder, for example, when a pulling force is applied to the mounting portion in a fixed state with respect to the stud, the tip claw hits the screw of the stud, and the tip claw is easily chipped or damaged. Along with this, the design holding force for the stud could not be maintained, the holding force was lowered, and there was a risk that the stud would come off. In addition, the tip claw of the locking piece may be chipped when it is removed from the stud for maintenance or the like, and the holding force may decrease when it is engaged and fixed to the stud again. Such a risk is due to the fact that the tip claw of the locking piece is located in the insertion hole of the mounting part and cannot be seen from the outside, resulting in a decrease in the holding force for the stud and further inadvertent disengagement. It also becomes a factor that impairs safety.

Therefore, an object of the present invention is to solve the above problems, for example, to eliminate the risk of the locking piece or its tip claw being chipped or damaged even if a pulling force is applied to the mounting portion in a fixed state with respect to the stud. The purpose is to be able to stably maintain the design holding force for the stud. Other purposes will be clarified in the following description.

In order to achieve the above object, the present invention of claim 1 has an insertion hole and a locking piece provided on a peripheral wall separating the insertion hole, as specified with reference to the drawings, and has a mounted surface. A stud holder that inserts a stud into the insertion hole for a stud that is erected in a screw or has a circumferential groove, and engages and fixes the tip claw of the locking piece to the screw or the circumferential groove. The locking piece bends in the width direction along the screw or the circumferential groove when a predetermined large pulling force in the direction of coming out of the stud is applied while the tip claw is engaged with the screw or the circumferential groove. It is characterized by having a flexible structure that makes it squeeze.

In the above-mentioned invention, the "flexible structure" has a structure similar to or a slit of a missing portion or the like as illustrated in FIG. 7, and is the same as the mounting portion by partially narrowing the width dimension of the locking piece. When the pulling force in the direction of the arrow is applied as shown in FIG. (B), the locking piece functions to elastically displace in the direction of relaxing and absorbing the pulling force. Further, "bending in the width direction" means that the locking piece bends in a direction other than the thickness direction (diameter direction). Specifically, it is used in a broad sense including that the locking piece bends in the spiral direction, the stud root direction, or the diagonal direction.

It is more preferable that the above invention is embodied as the following dependent terms. That is,
(1) The bending structure is a structure of a slit provided on a side portion of the locking piece (claim 2). Here, the "slit" is such that the locking piece bends in a direction other than the thickness direction (diameter direction), and may have a shape in which the width on the root side is narrower than the tip width of the locking piece. Specifically, it is not limited to the notch shape of the morphological example, for example, as a triangular slit or a groove, one side of the locking piece is the base, and the top of the triangle is arranged on the other side. It also includes notches such as rectangles and cylinders that extend in the width direction of the opening.
(2) The slit is provided at the root of the locking piece (claim 3).
This root portion means near the base end of the locking piece.

(3) The slit is provided on one side of the root portion of the locking piece (claim 4). One side of this root portion means one side of the plate width of the locking piece. However, the slit configuration includes a configuration in which a main large notch shape is attached to one side of the plate width of the locking piece and a smaller notch shape is attached to the other side as in the embodiment.
(4) The mounting portion is configured to have a stopper portion provided on the peripheral wall partitioning the insertion hole to prevent the locking piece from being excessively bent in the width direction (4). Claim 5). This stopper portion comes into contact with the tip end side portion of the locking piece and regulates the amount of bending of the locking piece, that is, the elastic displacement.

In the invention of claim 1, referring to FIG. 7, with the tip claw of the locking piece engaged with the screw or the circumferential groove of the stud, a predetermined large pulling force in the arrow direction from the stud as shown in (b). When is applied, the locking piece bends in the width direction along the screw or the circumferential groove due to the bending structure (for example, a slit such as a missing portion) to absorb or relax the stress. As a result, the tip claw of the locking piece is always in close contact with the screw or the circumferential groove and maintains an engaged state without being chipped or damaged by the pulling force. In this way, since the tip claw holds up without being chipped or damaged due to the flexible structure, the design holding force or the initial holding force can be stably maintained, and the possibility of inadvertent disengagement can be eliminated. Further, although this type of holder is made of resin, it also has an advantage that the range or degree of freedom in selecting the material of the resin is widened.

In the invention of claim 2, if the slit is provided on the side of the locking piece as a flexible structure, it is simple and easy to carry out.

According to the third aspect of the present invention, the locking piece is more likely to bend in the width direction with the slit at the base of the locking piece as a fulcrum, and it is easier to absorb or relax the load of the pulling force.

In the invention of claim 4, since the slit is provided on one side of the root portion of the locking piece, the bending direction of the locking piece is fixed, and the load of the pulling force can be better absorbed or relaxed.

According to the fifth aspect of the present invention, the locking piece hits the stopper portion to regulate the amount of bending, so that the locking piece and its tip claw can be prevented from being chipped or damaged.

It is explanatory drawing which shows the application example of the holder for studs of this invention form. The appearance of the holder is shown, (a) is a perspective view with the holder facing down, and (b) is a perspective view with the holder facing up. (A) is a front view showing the holder close to the stud, and (b) is a front view showing the holder engaged and fixed to the stud. (A) and (b) are a top view and a bottom view of the holder of FIG. 2 (a). (A) is a partially enlarged cross-sectional view taken along the line AA of FIG. 4 (a), and (b) is an enlarged cross-sectional view taken along the line BB of FIG. 4 (a). (A) is an enlarged view of the Y part of FIG. 3 (a), and (b) is an enlarged view of the Y1 part of FIG. 3 (b). (A) is a basic diagram corresponding to FIG. 6 (a), and (b) is an operation diagram when a pulling force is applied to the mounting portion or the holder in the state of (a). (A) and (b) are explanatory views showing FIG. 1 (g) and FIG. 3 (b) disclosed in Patent Document 1.

Hereinafter, examples of the embodiment of the present invention will be described with reference to the drawings. In this description, after detailing the structure of the holder, the operation of the main part will be clarified.

(Structure) The stud holder 1 of the morphological example is an injection-molded product of resin, and as shown in FIGS. 1 to 7, the mounting portion 2 fixed to the stud 9 erected on the panel 8 and the pipes 5 to 5 to It is composed of a holding portion 3 that restrains and supports 7 and the like. Here, the stud 9 is composed of a head portion 9a and a threaded portion 9b, and the head portion 9a is joined to the panel 8 by welding or the like to be integrated. The mounting portion 2 has an insertion hole 20 and locking pieces 23 to 26 provided on the peripheral walls 19 and 19a that partition the insertion hole 20, and the insertion hole 20 is provided with respect to the stud 9 erected on the panel 8. A screw 9b is inserted into the screw 9b, and the tip claws 23a to 26a of the locking pieces 23 to 26 are engaged with the screw or the screw valley 9c which is a circumferential groove and fixed. The holding portion 3 has a configuration in which the pipes 5 to 7 and the like are received by the receiving portions 3A to 3C (3) and are restrained by the elastic retaining pieces 34 and 35. These basic configurations are the same as or similar to the conventional ones. The main device is that the tip claws 23a to 26a of the locking pieces 23 to 26 engage with the screw valley 9c, that is, the holder 1 has the stud 9 and the locking pieces 23 to 26 with respect to the mounting surface of the panel 8. When a predetermined large pull-out force F in the direction of coming out of the stud 9 is applied in a state of being fixed via engagement, the locking pieces 23 to 26 are elastically displaced in the width direction along the screw valley 9c. It has a bending structure 4 that allows it to bend. Hereinafter, the detailed configuration of each part will be clarified.

As shown in FIGS. 2 to 4, the holder 1 includes vertical wall portions 11 and 15 on both sides of the base portion 10 stacked on the panel 8 and vertical wall portions 12 and 13 corresponding to the mounting portion 2. A vertical wall portion 14 arranged between the vertical wall portion 15 and the vertical wall portion 13 is erected. A recess 10a corresponding to the head portion 9a of the stud is provided on the lower surface of the base portion 10 (mounting surface overlapped with the panel 8). The recess 10a has a rectangular shape centered on the insertion hole 20 of the mounting portion 2, and when the screw portion 9b of the stud erected on the panel 8 is inserted into the insertion hole 20, the rectangular head portion 9a of the stud is formed. And non-rotatably fit.

As shown in FIGS. 2 and 3, the holding portion 3 is provided between the vertical wall portion 11 and the vertical wall portion 12, and is provided between the receiving portion 3A for receiving the pipe 5 and the like, and between the vertical wall portion 13 and the vertical wall portion 14. It is composed of a receiving portion 3B provided to receive the pipe 6 and the like, and a receiving portion 3C provided between the vertical wall portion 14 and the vertical wall portion 15 to receive the pipe 7 and the like. Of these, the receiving portion 3A is partitioned between the vertical wall portions 11 and 12 by an elastic receiving piece 30 on the vertical wall portion 12 side, an elastic receiving piece 31 on the vertical wall portion 11 side, and the like, and the receiving pipe 5 is received. Can be restrained by the elastic retaining piece 34 projecting diagonally downward from the top of the vertical wall portion 11. The receiving portion 3B is partitioned by a short vertical wall 16 erected between the vertical wall portions 13 and 14, an elastic receiving piece 30 on the vertical wall portion 13 side, an elastic receiving piece 30 on the vertical wall portion 14 side, and the like. At the same time, the received pipe 6 can be restrained by the elastic retaining pieces 34, 35 projecting diagonally downward from the tops of the vertical wall portions 13, 14. The receiving portion 3C is partitioned by a short vertical wall 17 erected between the vertical wall portions 14 and 15, an elastic receiving piece 30 on the vertical wall portion 14 side, an elastic receiving piece 30 on the vertical wall portion 15 side, and the like. At the same time, the received pipe 7 can be restrained by the elastic retaining pieces 34, 35 projecting diagonally downward from the tops of the vertical wall portions 14, 15. As the holding unit 3, an example in which three receiving units 3 are provided is given, but the number of receiving units 3 is designed according to the application and includes various developed shapes.

On the other hand, as shown in FIGS. 4 to 6, the mounting portion 2 has the insertion hole 20, the upper locking pieces 23 and 24 and the lower locking pieces 25, which are arranged facing each other in front of and behind the insertion hole 20. It has 26 and. Of these, the insertion hole 20 has left and right surfaces that penetrate the corresponding portions of the vertical wall portions 12 and 13 in a cylindrical shape in the vertical direction, and the front and rear are partially formed by the upper peripheral wall 18, the intermediate peripheral wall 19, and the lower peripheral wall 19a. It is closed. The upper locking pieces 23, 24 are erected facing each other with the base ends joined to the peripheral walls 19, and the tip claws 23a, 24a are slightly projected inside the insertion hole 20. The lower locking pieces 25 and 26 are erected facing each other with their base ends joined to the peripheral walls 19a, and the tip claws 25a and 26a are slightly projected inside the insertion hole 20. Further, the locking pieces 23 to 26 are partitioned by a space S having a substantially U shape on both sides and the upper side.

In each space S, the reference numeral S1 in FIG. 6A regulates the locking pieces 23 and 24 so as not to be excessively bent when the locking pieces 23 and 24 are bent by the bending structure 4 such as the slits 23b and 24a described later. It is a stopper portion on the vertical wall portion 12 side. Similarly, the reference numeral S1 in FIG. 5A also has a stopper on the vertical wall portion 13 side that regulates the locking pieces 24 and 26 so as not to be excessively bent when the locking pieces 24 and 26 are bent by the bending structure 4 such as the slits 24b and 26a. It is a department.

Further, the locking pieces 23, 24 and the locking pieces 25, 26 are provided in an inclined state as is clear from FIGS. 5 and 6, the base end is located outside the insertion hole 20, and the tip claws 23a to Only 26a protrudes into the insertion hole 20. The dimensions of the locking pieces 23, 24 and the locking pieces 25, 26 between the opposite tip claws 23a, 24a and the tip claws 25a, 26a are smaller than the maximum outer diameter of the thread of the stud 9. The tip claws 23a and 24a and the tip claws 25a and 26a can be engaged and disengaged from the front and back with respect to the screw valley 9c.

Further, each of the locking pieces 23 to 26 has slits 23b to 26b in which a part of the base end or the root portion is cut out so as to be able to swing in the width direction, and a notch portion smaller than the slits 23b to 26b. 23c to 26c are provided. The slits 23b to 26b constitute the bending structure 4 of the present invention. The cutout portions 23c to 26c help the operation of the bending structure 4 by the slits 23b to 26b, but may be omitted. Further, although the locking piece 23 and the locking piece 24 are substantially opposed to each other, the slit 23b of the locking piece 23 and the slit 24b of the locking piece 24, the slit 25b of the locking piece 25 and the slit 26b of the locking piece 26 are opposed to each other. Is provided on different sides of the locking piece, that is, one on the right side and the other on the left side.

As shown in the basic diagram of FIG. 7, the above locking pieces 23 to 26 are provided with substantially U-shaped partition grooves 21 and 22 in two upper and lower stages with respect to the front and rear wall portions of the peripheral wall that partitions the insertion hole 20. In addition, the tip claws 23a to 26a slightly protrude into the insertion hole 20 so that they can be engaged and disengaged from the screw valley 9c. That is, the mounting portion 2 of FIG. 7 differs only in the peripheral wall shape from that of FIGS. 1 to 6, and is the same except for the peripheral wall shape.

(Operation) Next, the fixing of the holder to the stud and the operation when the pulling force is applied to the holder will be clarified with reference to FIG. 7.
(A) As an example of the use of the above-mentioned holder 1, when restraining or holding various pipes or the like in a vehicle as illustrated in FIG. 1, a plurality of the above-mentioned holders 1 are used to hold or restrain the pipes or the like at a plurality of places. I often do it. Normally, the stud 9 is previously fixed to the vehicle body panel side by welding or the like. The operator holds the holder 1 as shown in FIG. 3A, aligns the insertion hole 20 with the stud 9, and strongly pushes the holder 1 toward the panel 8 from that state. Then, in the process in which the threaded portion 9b is inserted into the insertion hole 20, the holder 1 has the locking pieces 23 to 26 between the locking pieces 25 and 26, and subsequently between the locking pieces 23 and 24. Passing with elastic displacement, the tip claws 25a, 26a and the tip claws 23a, 24a engage with the corresponding thread valley 9c of the threaded portion 9b and are mounted on the stud 9. In this case, in the holder 1, each of the locking pieces 23 to 26 is likely to be displaced in the enlarged diameter and / or in the width direction due to the presence of the slits 23b to 26b which are the bending structures 4 provided at the root portion. Therefore, the insertion force of the stud 9 into the insertion hole 20 is also reduced, whereby the mounting operability can be improved.

(A) With the holder 1 mounted on the stud 9, pipes 5 to 7 are arranged with respect to the receiving portions 3A to 3C constituting the holding portion 3 as inferred from FIG. 3 (b). At the same time, it is restrained so as not to be inadvertently pulled out through the retaining piece 34 and / and the retaining piece 35.

(C) In the above-mentioned usage state, the holder 1 may receive a load in a direction away from the stud 9 via the pipes 5 to 7 restrained and held by the receiving portions 3A to 3C. Regarding this load, in the conventional stud holder, when a load such as being pulled out is applied to the holder, the tip claw of the locking piece, which is generating strong stress, is chipped or damaged, and finally the stud. Sometimes it came off. On the other hand, in this holder 1, since each of the locking pieces 23 to 26 has slits 23b to 26b as the bending structure 4, the tip is applied when a load (removal force F) to be removed is applied. As shown in FIG. 7B, the claws 23b to 26b are tilted toward the slit side, that is, in the width direction, and are brought into close contact with the spiral of the threaded portion 2b, that is, the corresponding thread valley 2c. As a result, in the bending structure 4, the tip claws 23b to 26b are in close contact with the screw valley 2c, so that the tip claws can be prevented from being chipped or damaged due to stress concentration.

(E) In other words, this holder 1 holds up without chipping or breaking the tip claws 23b to 26b immediately before or until the locking pieces 23 to 26 buckle at the root due to the withdrawal force F. The removal force can be increased compared to the product, and high holding force can be obtained.

(F) Further, the mounting portion 2 has stopper portions 21a and 22a provided on the peripheral wall partitioning the insertion hole 20 to prevent the locking pieces 23 to 26 from being excessively bent in the width direction. are doing. In the case of FIG. 6, among the surfaces partitioning the space S, the surfaces on the slits 23b to 26b side serve as the stopper portion. These stoppers come into contact with the tip side portions of the locking pieces 23 to 26 to regulate the amount of bending of the locking pieces, that is, elastic displacement, so that damage due to excessive bending can be avoided.

As can be seen from the above description, the holder for studs of the present invention may have the configuration specified in claim 1, and the details can be variously deformed and expanded. As an example, in the above embodiment, the front and rear locking pieces are provided in two upper and lower stages (a total of four locking pieces), but one stage may be used. Further, the holding portion may be the structure of Document 1 or the structure of another known example without being limited to the morphological example.

1 ・ ・ ・ ・ ・ ・ ・ ・ Stud holder 2 ・ ・ ・ ・ ・ ・ ・ Mounting part (20 is an insertion hole)
3 ... Holding part (3A to 3C are receiving parts)
4 ... Flexible structure (23b-26b are slits)
5-7 ... Piping (long object)
8 ... Panel (attached surface)
9 ... Stud (9a is the head, 9b is the screw part)
9c ・ ・ ・ ・ ・ ・ Screw valley (screw or circumferential groove)
10 ... Base part 11 to 15 ... Vertical wall part 16,17 ... Support wall 18,19 ... Peripheral wall 19a ... Peripheral wall 21 and 22 ... Section groove (21a) , 22a is the stopper part)
S ・ ・ ・ ・ ・ ・ Space S1 ・ ・ ・ ・ ・ ・ Stopper 23 ・ ・ ・ ・ ・ ・ Locking piece (23a is the tip claw)
24 ... Locking piece (24a is the tip claw)
25 ... Locking piece (25a is the tip claw)
26 ... Locking piece (26a is the tip claw)
30, 31 ... Receiving piece 32, 33 ... Removing piece F ...

Claims (5)

The mounting portion has an insertion hole and a locking piece provided on the peripheral wall separating the insertion hole, and the stud is inserted into the insertion hole into a stud standing on the surface to be mounted and having a screw or a circumferential groove. A stud holder that engages and fixes the tip claw of the locking piece to the screw or the circumferential groove.
The locking piece is bent in the width direction along the screw or the circumferential groove when a predetermined large pulling force in the direction of coming out of the stud is applied while the tip claw is engaged with the screw or the circumferential groove. A holder for studs, which is characterized by having a flexible structure. The holder for a stud according to claim 1, wherein the flexible structure is a slit provided on a side portion of the locking piece. The holder for studs according to claim 2, wherein the slit is provided at the root of the locking piece. The holder for a stud according to claim 3, wherein the slit is provided on one side of a root portion of the locking piece. Claim 1 is characterized in that the mounting portion has a stopper portion which is provided on a peripheral wall partitioning the insertion hole and regulates the locking piece so as not to be excessively bent in the width direction. The stud holder according to any one of 4 to 4.

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