WO2009131013A1

WO2009131013A1 - Engaging leg and clamp using the same

Info

Publication number: WO2009131013A1
Application number: PCT/JP2009/057243
Authority: WO
Inventors: 孝雄吉岡; 邦仁小倉; 洋行若松; 誠須野原; 博文和田
Original assignee: トヨタ車体株式会社
Priority date: 2008-04-21
Filing date: 2009-04-09
Publication date: 2009-10-29
Also published as: JP2009257551A; JP5101383B2

Abstract

An engaging leg (101) mounted to a belt clamp (1) and inserted and held in a mounting hole (6) in a body panel (5) of a vehicle. The distance L1, measured in the direction (P) of projection of a pair of engaging pieces (12), from an axis (9) to the outer peripheral surface of a pivoting support point section (15) located in a cross-section vertical to the axis and including pivoting support points (16) which are the center of pivoting of the pair (12) of engaging pieces is set smaller than the distance L2 from the axis (9) to the outer peripheral surface of an insertion section (11). By this, the pivoting support point section (15) has a shape recessed inward from the insertion section (11). As a result, the wall thickness of the lower half portion of the insertion section (11) is increased without changing the cross-sectional area of the pivoting support point section (15). This increases holding force without an increase in an insertion load of the engaging leg (101). Thus, holding force of the engaging leg is increased without an increase in an insertion load of the engaging leg into the mounting hole in the panel. Alternatively, the outer peripheral sections of the pair of engaging pieces (12) are formed in the same shape as conventional products, a pivoting support point section (24) is provided to the engaging leg, and the pivoting support point section (24) is provided with recesses (25) at those portions of a pair of escape holes (13 (22)) at which the pivoting points (16 (23)) of the engaging pieces (12) are formed. This provides the same result as that obtained by the construction above.

Description

Locking leg and clamp using the same

The present invention relates to a locking leg provided on a clamp for fixing a wire harness to a body panel of a vehicle, for example, and a clamp using the same.

A belt clamp may be used to route a wire harness or a tube to a vehicle body panel (see, for example, Patent Document 1). This belt clamp is made of a resin material and includes a belt portion wound around a wire harness and a locking leg inserted into an attachment hole of the body panel.

As shown in FIGS. 14A and 14B, the locking leg 100 is extended from a flat board portion 53 having an area larger than the mounting hole 52 of the body panel 51 and a bottom surface portion of the board portion 53. And an insertion portion 54. A pair of locking pieces 55 project from the outer peripheral surface of the insertion portion 54. The pair of locking pieces 55 are cut out from the outer peripheral surface of the insertion portion 54 except for a cross section perpendicular to the axis including the rotation fulcrum 56 (rotation fulcrum portion 57), and rotate in a direction intersecting the axis 58 ( Elastic deformation). The insertion portion 54 is provided with respective escape holes 59 for retracting the pair of elastically deformed locking pieces 55.

When the insertion load when the conventional locking leg 100 is inserted into the mounting hole 52 of the body panel 51 and the holding force in the attached state were measured, the insertion load was 20 to 40 N and the holding force was 150 to 200 N. It was. Then, when a load exceeding the holding force is applied to the conventional locking leg 100 in the direction of extracting it from the body panel 51, the force acting on the pair of locking pieces 55 reaches the distal end portion of the insertion portion 54. As shown in FIG. 14B, a tear 60 may be generated at the distal end portion of the insertion portion 54.

Recently, an increase in holding force (for example, 300 N or more) is required for this type of locking leg 100. For this reason, as shown by a two-dot chain line in FIG. As a result, the pair of locking pieces 55 are not easily elastically deformed, and the insertion load into the mounting hole 52 of the body panel 51 is increased. The length of the insertion portion 54 in the locking leg 100 is preferably as short as possible in order to avoid interference with members in the body panel 51, and the insertion portion 54 is lengthened by making the lower half of the insertion portion 54 longer. It is not preferable to increase the rigidity.
JP 2006-153049 A

In view of the above circumstances, the present invention has an object to increase the holding force of the locking leg without increasing the insertion load into the mounting hole of the panel.

Means for Solving the Problems and Effects of the Invention

The present invention for solving the above problems is as follows.
A flat plate-shaped substrate portion and an insertion portion extending from one surface thereof, and the insertion portion is a locking leg inserted and held in an attachment hole provided in the panel,
The insertion portion is reciprocally rotatable in a direction intersecting with the axis around a rotation fulcrum provided in the insertion portion, and a pair of tips projecting outward from the outer peripheral surface of the insertion portion. A locking piece, and a relief hole for retracting the pair of locking pieces when they are rotated, are provided,
The pair of locking pieces rotate in directions approaching each other when the insertion portion is inserted into the mounting hole of the panel, and are separated from each other when the insertion portion is inserted into the mounting hole of the panel. Provided to rotate in the direction of
The length from the axis in the protruding direction of each locking piece to the outer peripheral surface of the insertion portion is also the same as the length from the axis to the outer peripheral surface of the cross section perpendicular to the axis including the rotation fulcrum of the pair of locking pieces. It is also characterized by a longer length.

Since the locking leg according to the present invention is configured as described above, the length of the cross section perpendicular to the axis (the rotation fulcrum portion) including the rotation fulcrum for rotating the pair of locking pieces remains unchanged. By extending the lower half of the insertion portion outward, the wall thickness is increased. As a result, it is possible to increase the holding force of the locking leg in the state of being attached to the mounting hole without increasing the insertion load when the pair of locking pieces are rotated and inserted into the mounting hole of the panel. it can.

The above-mentioned locking leg is a form that increases the thickness by causing the lower half of the insertion portion to protrude outward, but by extending the lower half of the insertion portion inward, The wall thickness may be increased. For example, in the relief hole of the locking leg, a recess is formed on the inner peripheral surface of the cross section perpendicular to the axis including the pivotal fulcrum of the pair of locking pieces, so that the insertion portion is released from the axis in the protruding direction of each locking piece. Similarly, the length to the inner peripheral surface of the hole can be made shorter than the length from the axis to the inner peripheral surface of the cross section perpendicular to the axis including the rotation fulcrum of the pair of locking pieces.

In this case, if a relief hole for retracting the pair of locking pieces is provided in a penetrating state over the entire board portion and the insertion portion, in the manufacturing process of the locking leg, a mold (particularly, a relief die) is formed. It becomes easy to release the mold for forming the hole.

This rib can be provided with a rib that bisects the cross-sectional area perpendicular to the axis. Thereby, the rigidity of the support | pillar part of a latching leg is improved, and a latching leg becomes difficult to rotate in the state attached to the attachment hole of the panel.

And the holding force of the latching leg with respect to the mounting hole of the said panel calculated | required by the product of the area of the shaft right-angled cross section including the rotation fulcrum of each latching piece in the insertion part of a latching leg, and the shear stress in an axis perpendicular cross section Can be larger than a set value (for example, 300 N). Thereby, it is possible to counter a force that is far greater than that of the conventional locking leg.

The above-described locking leg can be used as a locking leg for a clamp (for example, a belt clamp). Thereby, a wire harness and tubes can be firmly fixed to the body panel of a vehicle, for example, via a belt clamp.

It is a front view of the belt clamp 1 which concerns on this invention. Similarly, it is a right side view. It is a side view of the belt clamp 1 of use condition. It is a perspective view from the upper direction of the locking leg 101 of 1st Example. It is a perspective view from the bottom similarly. It is a front view of the locking leg 101. FIG. It is a side view similarly. It is a bottom view similarly. 3 is a front sectional view of the locking leg 101. FIG. FIG. 10 is an operation explanatory diagram in a state where the locking leg 101 is being inserted into the mounting hole 6 of the body panel 5. FIG. 10 is an operation explanatory diagram in a state where the locking leg 101 is inserted into the mounting hole 6 of the body panel 5. It is a perspective view from the upper direction of the locking leg 102 of 2nd Example. It is a perspective view from the bottom similarly. 3 is a plan view of a locking leg 102. FIG. It is also a front view. It is a side view similarly. It is a bottom view similarly. 4 is a front sectional view of the locking leg 102. FIG. 5 is a schematic view showing a method for manufacturing the locking leg 102. FIG. It is the schematic which shows the next process of FIG. 10A. It is a perspective view from the upper part of the latching leg 103 of 3rd Example. It is a perspective view from the bottom similarly. It is a front view of the locking leg 103. FIG. It is a side view similarly. It is a bottom view similarly. 3 is a front sectional view of the locking leg 103. FIG. It is front sectional drawing of the conventional latching leg 100. FIG. It is a side view of the locking leg 100 in which the slit 60 entered the insertion part 54. FIG.

Examples of the present invention will be described. 1A is a front view of a belt clamp 1 according to the present invention, FIG. 1B is a right side view of the same, FIG. 2 is a side view of the belt clamp 1 in use, and FIG. 3A is from above the locking leg 101 of the first embodiment. 3B is a perspective view from below, FIG. 4A is a front view of the locking leg 101, FIG. 4B is a side view of the same, FIG. 4C is also a bottom view, and FIG. 5 is a front view of the locking leg 101. It is sectional drawing. In this specification, the latching leg provided in the belt clamp which is an example of a clamp is demonstrated.

As shown in FIG. 1A and FIG. 1B, the belt clamp 1 is made of a resin material (for example, polypropylene), and includes a locking leg (the locking leg 101 of the first embodiment) and a large number of tooth portions 2a. The elongated belt portion 2 and the engaging portion 3 through which the claw portion 3a that engages with the tooth portion 2a is protruded. When the belt clamp 1 is used, the wire harness 4 is wound around the belt portion 2 as shown in FIG. In this state, the locking leg 101 is inserted into the mounting hole 6 of the vehicle body panel 5. The locking leg 101 of this embodiment is attached to a 7 × 12 attachment hole 6 having a width of 7 mm, a length of 12 mm, and both ends formed in a semicircular shape.

The locking leg 101 of the first embodiment will be described. As shown in FIGS. 3A and 3B, the locking leg 101 includes a rectangular flat plate-shaped substrate portion 7 and a pair of elastically deformable protrusions that project obliquely downward from both longitudinal side surfaces of the substrate portion 7. The stabilizer 8 and the insertion part 11 extended from the bottom face part of the board | substrate part 7 by making the axis line 9 the same are provided. The lower half of the insertion portion 11 (the portion that is initially inserted into the attachment hole 6 of the panel 5) is cut obliquely so as to facilitate insertion into the attachment hole 6, and a cross section perpendicular to the axis of the insertion portion 11 Has a similar shape slightly smaller than the mounting hole 6 of the panel 5. A pair of locking pieces 12 are provided on the side surface in the short direction of the insertion portion 11. The pair of locking pieces 12 protrude along the longitudinal direction of the substrate portion 7. Hereinafter, the longitudinal direction of the substrate portion 7 is referred to as “the protruding direction P of the pair of locking pieces 12”. A pair of relief holes 13 are provided in the direction of the axis 9 from the bottom surface of the insertion portion 11 to the bottom surface of the substrate portion 7. The locking piece 12 and the relief hole 13 will be described later. In FIG. 3A and subsequent figures, illustration of the belt portion 2 and the engaging portion 3 is omitted.

The pair of locking pieces 12 will be described with reference to FIGS. 4A, 4B, 4C, and 5. FIG. Since the pair of locking pieces 12 are provided symmetrically with respect to the axis 9, only one (right side) locking piece 12 will be described here. The locking piece 12 is formed by cutting out a substantially central portion in the height direction of the side surface portion in the short direction of the insertion portion 11 with a substantially inverted U-shaped cut 14. The locking piece 12 is connected to the insertion portion 11 at the lower end portion (rotating fulcrum portion 15). The rotation fulcrum portion 15 means a cross section perpendicular to the axis of the insertion portion 11 including the rotation fulcrum 16 that rotates the locking piece 12. The rotation fulcrum portion 15 is provided in an arc shape on the inner side (axis 9 side) of the insertion portion 11 in the protruding direction P of the pair of locking pieces 12. In other words, the outer peripheral surface of the insertion portion 11 is provided to protrude outward from the rotation fulcrum portion 15. Therefore, the length L1 from the axis 9 of the locking leg 101 to the outer peripheral surface of the rotation fulcrum portion 15 in the protruding direction P of the pair of locking pieces 12 is from the axis 9 to the outer peripheral surface of the insertion portion 11 in the same manner. It is slightly shorter than the length L2.

An inclined surface 17 is formed obliquely upward from the rotation fulcrum portion 15 of the locking piece 12, and a claw portion 18 having a substantially triangular cross section protruding outward from the outer peripheral surface of the insertion portion 11 at the upper portion. Is provided. Further, an arc-shaped stopper portion 19 is extended in the direction of the axis 9 along the direction of the axis 9 from the upper edge of the claw portion 18 in plan view. The length L3 from the axis 9 of the locking leg 101 to the stopper portion 19 in the protruding direction P is slightly longer than the length L2 from the axis 9 to the outer peripheral surface of the insertion portion 11 in the same manner.

And the insertion part 11 is provided with two escape holes 13 in the height direction, and a rib 21 is provided between them. The rib 21 further increases the rigidity of the insertion portion 11. The locking piece 12 is cut out from the outer peripheral surface of the insertion portion 11 by the one escape hole 13 and the inverted U-shaped cut 14, and the inside of the rotation fulcrum portion 15. It can be rotated (elastically deformed) in the direction perpendicular to the axis around the rotation fulcrum 16. When the locking piece 12 is rotated toward the axis 9, the locking piece 12 is retracted into the corresponding relief hole 13. When the locking piece 12 is rotated to the maximum toward the axis 9 side, the outer peripheral edge of the claw portion 17 is disposed slightly inside the outer peripheral surface of the insertion portion 11 (see FIG. 6A).

The operation when the locking leg 101 of the first embodiment is inserted into the mounting hole 6 of the body panel 5 will be described. As shown in FIG. 6A, the insertion portion 11 is inserted into the attachment hole 6 of the body panel 5. Since the lower half of the insertion portion 11 is cut obliquely, the operation of inserting the insertion portion 11 is easy. Moreover, since the cross-sectional shape at right angles to the axis of the insertion portion 11 is slightly similar to the cross-sectional shape of the mounting hole 6, the insertion portion 11 does not rattle during insertion.

As shown in FIG. 6A, the inclined surfaces 17 of the pair of locking pieces 12 of the locking leg 101 and the peripheral edge of the mounting hole 6 of the body panel 5 come into contact with each other. When the locking leg 101 is further pushed in, the pair of locking pieces 12 are pressed against the inner peripheral surface of the mounting hole 6, elastically deformed around the rotation fulcrum 16, and approach each other in the direction perpendicular to the axis. Rotated in the direction. In FIG. 6A, the body panel 5 and the locking piece 12 in this state are indicated by a two-dot chain line. The pair of rotated locking pieces 12 are retracted into the corresponding escape holes 13.

6B, when the mounting hole 6 of the body panel 5 exceeds the claw portions 18 of the pair of locking pieces 12, the pressed state of the pair of locking pieces 12 by the mounting holes 6 is released. Each locking piece 12 is elastically restored and rotated in a direction away from each other toward the outside in the direction perpendicular to the axis. And the stopper part 19 presses the inner peripheral surface of the attachment hole 6 of the body panel 5 by the elastic restoring force of each locking piece 12. A length L3 from the axis 9 to the stopper portion 19 in the protruding direction P of the pair of locking pieces 12 is slightly longer than a length L2 from the axis to the outer peripheral surface of the insertion portion 11 in the same manner. For this reason, the nail | claw part 18 of a pair of latching piece 12 has an elastic restoring force (in other words, a pair of latching piece 12 does not return completely), and presses the internal peripheral surface of the attachment hole 6. . Also, the pair of stabilizers 8 pressed upward by the body panel 5 presses the body panel 5 downward with its elastic restoring force (see FIG. 2). In other words, the locking leg 101 inserted into the mounting hole 6 of the body panel 5 has a pair of locking pieces 12 pressing the body panel 5 in the protruding direction P (horizontal direction) and a pair of stabilizers 8 being the body. The panel 5 is pressed in the direction of the axis 9 (see FIG. 2). Thereby, the latching leg 101 is attached to the body panel 5 in a stable state.

Consider a case where some force is applied in the direction of the axis 9 of the locking leg 101 attached to the body panel 5 and the locking leg 101 is pulled out from the body panel 5. In the case of the conventional locking leg 101, as shown in FIG. 14A, the width 54 ′ of the insertion portion 54 is reduced in order to facilitate the insertion into the mounting hole 52 of the body panel 51 and ensure the guiding property. It was. Then, as shown in FIG. 14B, the force for pulling out the locking leg 101 reaches the lower half of the insertion portion 54 and causes the tear 60 in the insertion portion 54. On the other hand, in the case of the locking leg 101 of the present embodiment, as shown in FIG. 5, by forming the insertion portion 11 and the pair of locking pieces 12 in a stepped shape, The thickness of the lower half of the insertion portion 11 is increased while keeping the area of the axially perpendicular section including the rotation fulcrum 16 of each locking piece 12 and the area of the rotation fulcrum 15). Accordingly, the thickness of the lower half of the insertion portion 11 is increased without hindering the ease of rotation (elastic deformation) of the pair of locking pieces 12, and the rigidity of the lower half of the insertion portion 11 is increased. Get higher. That is, it is possible to increase the holding force of the locking leg 101 while keeping the area of the rotation fulcrum 15 and the height of the insertion portion 11 as they are.

The holding force of the locking leg 101 of the first embodiment is calculated. The locking leg 101 of the first embodiment is made of polypropylene and is inserted into a mounting hole 6 having a predetermined size (for example, 7 × 12) provided in the body panel 5. Then, the maximum shearing force of the pair of locking pieces 12 (the locking legs 101) is obtained from the product of the cross-sectional area perpendicular to the axis of the rotation fulcrum 15 which is the thinnest portion in the insertion portion 11 and the shear stress of polypropylene. The holding power was about 350N.

Here, assuming that the set value of the holding force of the locking leg 101 is 300 N, in the locking leg 101 of the first embodiment, the maximum shearing force of the rotation fulcrum 15 which is the thinnest part exceeds 300 N. ing. This means that the locking leg 101 of the first embodiment can withstand a pulling force of at least 300N.

Next, referring to FIGS. 7A, 7B, 8A, 8B, 8C, 8D, and 9, the locking leg 102 of the second embodiment is different from the locking leg 101 of the first embodiment. Only the part will be described. The locking leg 101 of the first embodiment described above is configured so that the lower half portion of the insertion portion 11 protrudes outward in a stepped state from the rotation fulcrum portion 15 of each locking piece 12, thereby turning the fulcrum. This is a case where the thickness of the insertion portion 11 is increased while the sectional area of the portion 15 is the same as that of the conventional one. In contrast, in the locking leg 102 of the second embodiment, the shape of the outer peripheral portion of the pair of locking pieces 12 is the same as that of the conventional one, and the rotation of each locking piece 12 in the pair of escape holes 22 is performed. This is a case where the concave portion 25 is formed in the portion where the fulcrum 23 is provided (the rotation fulcrum portion 24). And in order to form the recessed part 25 in the internal peripheral surface of a pair of escape hole 22, each escape hole 22 is provided in the direction of the axis line 9 in the penetration state. As a result, as shown in FIG. 9, the length from the axis 9 to the recess 25 is also longer than the length L4 from the axis 9 to the inner peripheral surface of the escape hole 22 in the protruding direction P of the pair of locking pieces 12. L5 is longer. Thereby, the area of the rotation fulcrum part 24 is made the same as that of the conventional one, and the thickness of the lower half part of the insertion part 26 is made while the rotation (elastic deformation) of the pair of locking pieces 12 is made easy. It can be made thicker than the conventional one. As a result, the holding force can be increased without increasing the insertion load of the locking leg 102.

A method of manufacturing the locking leg 102 of the second embodiment will be briefly described with reference to FIGS. 10A and 10B. As shown in FIG. 10A, molten resin 32 flows into a cavity 31 formed by being surrounded by each mold (inner mold 27, outer mold 28, and upper mold 29). After the molten resin 32 is solidified, the outer mold 28 and the upper mold 29 are released as shown in FIG. 10B. Subsequently, the pair of locking pieces 12 are rotated outward (elastically deformed) around their rotation fulcrum 23. Thereby, the interference between the recess forming protrusion 27a of the inner mold 27 and the inner peripheral surface of each locking piece 12 is avoided, and the inner mold 27 can be pulled upward. In FIGS. 10A and 10B, a mold (slide core) for forming the cut 14 of each locking piece 12 is not shown.

In the case of the locking leg 102 of the second embodiment, by forming the concave portion 25 on the inner peripheral surface of the insertion portion 26, the area of the rotation fulcrum portion 24 of the pair of locking pieces 12 is left as it is, and the insertion portion 26. The wall thickness of the lower half is increased. As a result, the thickness of the lower half of the insertion portion 26 is increased without hindering the pair of locking pieces 12 from being easily rotated (elastically deformed), and the rigidity of the lower half of the insertion portion 26 is increased. Becomes higher. That is, it is possible to increase the holding force of the locking leg 102 while keeping the area of the rotation fulcrum portion 24 and the height of the insertion portion 26 as they are. Moreover, unlike the locking leg 101 of the first embodiment, the outer peripheral surface of the rotation fulcrum portion 24 is not constricted (stepped state), so that the appearance is good.

In the above-described locking leg 102 of the second embodiment, a pair of escape holes 22 are provided in a penetrating shape to pull out the inner mold 27 upward. However, even if the pair of escape holes 33 are provided in a non-penetrating state as in the locking leg 103 of the third embodiment shown in FIGS. 11A, 11B, 12A, 12B, 12C and 13. Good. In the case of the locking leg 103 of the third embodiment, the inner mold 27 (see FIG. 10A) has to be pulled downward, so that the inner mold is formed on the inner peripheral surface of each escape hole 33 near the locking piece 12. 27 punched grooves 34 are formed along the direction of the axis 9. The extraction groove 34 is provided on the inner peripheral surface of the pair of escape holes 33 and is provided continuously with the recess 25. Further, the rotation fulcrum portions 24 of the respective locking pieces 12 are rotated (elastically deformed) by making the inner width of the rotation fulcrum portion 24 the same as the inner width of the extraction groove 34. In order to make it easy, it cuts in the direction orthogonal to the protrusion direction P of a pair of locking piece 12, and each notch part 35 is formed in the said part. From each notch part 35, the slide core (not shown) for forming the recessed part 25 can be released. As a result, the locking leg 103 of the third embodiment has the same function and effect as the locking leg 102 of the second embodiment, and a pair of relief holes 33 are formed in a non-penetrating state. Therefore, there is an advantage that the overall rigidity is higher than that of the locking leg 102 of the second embodiment.

A pair of stabilizers 8 are projected from the substrate portion 7 of the locking legs 101 to 103 of the above-described embodiments. However, the stabilizer 8 may have a shape other than this (for example, a dish-like shape protruding from the entire circumference of the substrate portion 7).

Further, in this specification, the locking legs 101 to 103 provided on the belt clamp 1 have been described. However, the engagement legs 101 to 103 may be provided other than the belt clamp 1.

In the present specification, the locking legs 101 to 103 inserted into the 7 × 12 mounting holes 6 provided in the body panel 5 have been described. However, it is needless to say that a locking leg having a size other than this may be used.

Claims

A flat plate-shaped substrate portion and an insertion portion extending from one surface thereof, and the insertion portion is a locking leg inserted and held in an attachment hole provided in the panel,
The insertion portion is reciprocally rotatable in a direction intersecting the axis around a rotation fulcrum provided in the insertion portion, and a pair of tips projecting outward from the outer peripheral surface of the insertion portion. A locking piece, and a relief hole for retracting the pair of locking pieces when they are rotated, are provided,
The pair of locking pieces rotate in directions approaching each other when the insertion portion is inserted into the mounting hole of the panel, and are separated from each other when the insertion portion is inserted into the mounting hole of the panel. Provided to rotate in the direction of
The length from the axis in the protruding direction of each locking piece to the outer peripheral surface of the insertion portion is also the same as the length from the axis to the outer peripheral surface of the cross section perpendicular to the axis including the rotation fulcrum of the pair of locking pieces. The locking leg is characterized by a longer length.
A flat plate-shaped substrate portion and an insertion portion extending from one surface thereof, and the insertion portion is a locking leg inserted and held in an attachment hole provided in the panel,
The insertion portion is reciprocally rotatable in a direction intersecting with the axis around a rotation fulcrum provided in the insertion portion, and a pair of tips projecting outward from the outer peripheral surface of the insertion portion. A locking piece, and a relief hole for retracting the pair of locking pieces when they are rotated, are provided,
The pair of locking pieces rotate in directions approaching each other when the insertion portion is inserted into the mounting hole of the panel, and are separated from each other when the insertion portion is inserted into the mounting hole of the panel. Provided to rotate in the direction of
The length from the axis in the protruding direction of each locking piece to the inner peripheral surface of the escape hole of the insertion portion, and the inner circumference of the cross section perpendicular to the axis including the rotation fulcrum of the pair of locking pieces from the axis A locking leg characterized by being shorter than the length to the surface.
3. The locking leg according to claim 2, wherein a recess is formed in an inner peripheral surface of a cross section perpendicular to the axis including a pivot point of the pair of locking pieces in the escape hole.
The locking leg according to any one of claims 1 to 3, wherein the escape hole is provided in a penetrating state in the axial direction.
The locking leg according to any one of claims 1 to 4, wherein the relief hole is provided with a rib that bisects a cross-sectional area in a direction perpendicular to the axis. .
The holding force of the locking leg with respect to the mounting hole of the panel determined by the product of the area of the cross section perpendicular to the axis including the rotation fulcrum of each locking piece in the insertion portion and the shear stress in the cross section perpendicular to the axis is a set value. The locking leg according to any one of claims 1 to 5, wherein the locking leg is larger than the locking leg.
A clamp having the locking leg according to any one of claims 1 to 6.