JPH08261366A - Clamp - Google Patents

Abstract

PURPOSE: To provide a clamp which is so constituted as to cope with mounting frames with various thicknesses. CONSTITUTION: A resiliently deformable pulloff prevention projection piece 16 formed integrally with the shaft part 4 of a clamp 1 is inclined toward the tip of the shaft part 4 and thus in a direction in which it is separated away from the peripheral surface S of the shaft part 4 and has a first slop 17 which is displaced in an opening part 14 formed at the peripheral wall of the shaft part 4 by press through engagement with the peripheral edge part of a through- hole during insertion of the shaft part 4 in the through-hole of a mounting frame. The shaft part 4 has a plurality of sections 11, 12, and 13 set by axially dividing the shaft part 4 into a plurality of sections. At least two pulloff prevention pieces 16 are formed at each of the sections 11, 12, and 13. One pair of lower pulloff prevention projection pieces 16X and the other pair of upper pulloff projection pieces 16Y are formed in different positions in the axial direction and the peripheral direction of the shaft part 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp used for supporting a pipe, a cable, a protective pipe, or the like, and more specifically, a pipe or the like that is piped to a mounting frame of a vehicle or the like. The present invention relates to a clamp fixed to a mounting frame in order to do so.

[0002]

2. Description of the Related Art Conventionally, as this type of clamp, there is one shown in FIG. 4, for example. Reference numeral a denotes a plastic clamp, and the clamp a has a support portion b for supporting a pipe (not shown) and a cylindrical shaft portion c extending from the base end portion of the support portion b. The support portion b has a pair of opposing sandwiching pieces d that extend in the direction opposite to the shaft portion c and are close to each other, and a curved groove e formed at the base of the pair of sandwiching pieces d. d is elastically deformable in the direction away from each other with its base as a fulcrum. A pair of elastically deformable elastic pieces g extending in the direction opposite to the sandwiching piece d and inclined so as to be separated from the shaft portion c are formed at the base end of the supporting portion b at positions facing each other. There is.

Two pairs of quadrangular openings h are formed on the peripheral wall of the shaft portion c, and a retaining projection i is integrally formed on one side of each opening h, that is, one side located on the tip end side of the shaft portion c. Is formed in. The retaining projection i is bent around the base portion j as a fulcrum and is displaceable inside and outside the opening h, and is positioned outside the opening h before the bending deformation. The retaining projection i has a first inclined surface 1 that is inclined from the base portion j as a starting end in a direction away from the peripheral surface k of the shaft portion c as it moves away from the distal end portion of the shaft portion c, and the tip of the first inclined surface l. The second inclined surface m that inclines toward the peripheral surface k of the shaft portion c as it moves away from the distal end portion of the hanging shaft portion c, and the axis of the sliding shaft portion c that extends from the distal end portion of the second inclined surface m. A horizontal plane n extending in a direction orthogonal to the circumferential surface k of the shaft portion c is formed.

Of the two pairs of retaining projections i corresponding to the two pairs of openings h, the lower retaining protrusions o of one pair are in axial symmetry with each other, and similarly, the upper retaining protrusions of the other pair. The piece p is also in an axially symmetrical position with respect to each other. The lower retaining projection o of one pair and the upper retaining projection p of the other pair are located at different positions in the axial direction of the shaft portion c, and similarly in the circumferential direction of the shaft portion c. In different positions.

To mount such a clamp a on the mounting frame q, hold the support b of the clamp a and hold the shaft c.
Can be inserted into the through hole r of the mounting frame q from the front surface side of the mounting frame q. When the shaft portion c is inserted, the lower retaining projection o located at the tip of the shaft portion c is inserted into the peripheral portion of the through hole r. When it is engaged with and pressed, it is elastically deformed so as to bend inward with its base j as a fulcrum, and is pushed into the opening h.

The tip of the shaft portion c is attached to the mounting frame q.
When protruding from the back surface of the mounting frame q through the through-hole r, the spring force of the lower retaining projection o causes the lower retaining projection o to move outward with the base j as a fulcrum. And bends to the outside of the opening h formed in the peripheral wall of the shaft portion c.

To fix the clamp a to the mounting frame q, the clamp a is pushed until the elastic piece g formed on the supporting portion b comes into contact with the surface of the mounting frame q and is pushed outward. Then, for example, the upper retaining projection p is provided with the opening h.
The clamp a is stopped from being pushed out when it comes out and is engaged with the back surface of the mounting frame q. At this point, the clamp a is engaged with the surface of the mounting frame q by the elastic piece g, while the upper retaining projection p is engaged with the rear surface of the mounting frame q. It will be firmly fixed.

[0008]

In the conventional example as described above, the shaft portion c of the clamp a is short, and the retaining projections i are only a pair of upper and lower portions. Therefore, the mounting frame q having a relatively thin plate is used.
It could only be used. For this reason, it is necessary to prepare various clamps a corresponding to various plate thicknesses for a relatively thick mounting frame q that exceeds the range of use, and therefore, the number of parts is large, so that the manufacturing cost and the stock space are reduced. It was necessary and was disadvantageous in terms of cost.

Further, since it is necessary to properly use various clamps a according to the plate thickness of the mounting frame q, extra work such as selection of clamps is required, resulting in poor work efficiency.
In addition, as a fastener such as a clip, for example, the actual open sho-64-
There are those described in Japanese Patent No. 36713, Japanese Utility Model Laid-Open No. 2-24115, etc., but these are fasteners for mounting a mounting member to a mounted member.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a clamp that can be applied to a frame having a relatively large plate thickness.

[0011]

According to a first aspect of the present invention, there is provided a support portion and a cylindrical shaft portion extending from the support portion to a through hole formed in a plate-shaped mounting frame. Of the mounting frame located between the elastically deformable elastic piece integrally formed on the support part and the elastically deformable retaining projection piece integrally formed on the shaft part when the shaft part is inserted. In the clamp made of plastic which is fixed to the mounting frame by the elastic piece pressing the front surface of the mounting frame with a spring force while the retaining projection is engaged with the back surface, the retaining projection has the shaft portion. Of the shaft portion by inclining in a direction away from the peripheral surface of the shaft portion with increasing distance from the tip end portion of the shaft portion and engaging with and pressing the peripheral edge portion of the through hole when the shaft portion is inserted into the through hole. Displaced in the opening formed on the peripheral wall The shaft portion has a plurality of sections set by dividing the shaft portion into a plurality of sections in the axial direction, and at least two pairs of the retaining projections are formed in each section. The one pair of lower retaining projections and the other pair of upper retaining projections are formed at different positions in the axial direction and the circumferential direction of the shaft portion.

[0012]

When the shaft portion of the clamp is inserted into the through hole from the surface side of the mounting frame, first, the lower stopper protrusion of the section located at the tip portion of the shaft portion is engaged with and pressed by the peripheral edge portion of the through hole. As a result, the base is used as a fulcrum to elastically deform so as to bend inward and be pushed into the opening.

In this manner, the upper retaining protrusion and the lower retaining protrusion of each section are sequentially pushed into the opening. When the tip of the shaft penetrates through the through-hole and projects from the rear surface of the mounting frame, the spring force tends to return to the original position of the lower stopper protrusion of the section located at the tip, and the lower stopper is retained. The projecting piece bends outward with the base portion as a fulcrum, goes out of the opening formed in the peripheral wall of the shaft portion, and returns to the original position.

In this manner, the upper retaining protrusion and the lower retaining protrusion in each section are sequentially ejected outward from the opening and returned to their original positions. By the way, in order to fix the clamp to the mounting frame, the clamp is pushed until the elastic piece formed on the supporting portion abuts the surface of the mounting frame and is bent and elastically deformed so as to be expanded outward.

Then, the pushing of the clamp is stopped at the time when the upper or lower retaining projection of a certain section comes out of the opening and engages with the rear surface of the mounting frame. At this point the clamp will
Since the elastic piece presses the surface of the mounting frame and engages with the surface, while the upper or lower retaining projection engages with the back surface of the mounting frame, it is firmly fixed to the mounting frame.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. An embodiment of the clamp according to the invention described in claim 1 will be described. In FIGS. 1 and 2, reference numeral 1 is a nylon clamp. The clamp 1 has a support portion 3 for holding the pipe 2 and a cylindrical shaft portion 4 extending from a base end portion of the support portion 3. The support portion 3 has a pair of opposing sandwiching pieces 5 that extend in the direction opposite to the shaft portion 4 and are close to each other, and a curved groove 6 formed in the base of the pair of sandwiching pieces 5, Reference numeral 5 is elastically deformable in the directions away from each other with the base portion as a fulcrum.

A pair of elastically deformable elastic pieces 10 extending in the direction opposite to the sandwiching piece 5 and inclined so as to be separated from the shaft portion 4 are provided at the base end portions of the supporting portions 3 so as to face each other. Has been formed. On the other hand, in the shaft portion 4 of the clamp 1, a plurality of sections in the axial direction, that is, three sections in FIG. 1, are divided into three sections, that is, a first section 11, a second section 12, and a third section 13. There is.

In this case, it is assumed that the first section 11 is located on the tip end side of the shaft portion 4. First section 11, second section 1
2, two pairs of quadrangular openings 14 are formed on the peripheral wall of the shaft portion 4 in each of the third and third sections 13.
The retaining projection 16 is integrally formed on one side, that is, on the side located on the tip end side of the shaft portion 4. Stopping projection 16
As will be described later, is deformable by being bent around the base portion P as a fulcrum and can be displaced inside and outside the opening portion 14, and is located outside the opening portion 14 before the bending deformation.

The retaining projection 16 has a first inclined surface 17 that inclines in a direction away from the peripheral surface S of the shaft portion 4 as it moves away from the distal end portion of the shaft portion 4 starting from the base portion P, and a first inclined surface. A second inclined surface 18 that slopes toward the peripheral surface S of the shaft portion 4 as it moves away from the distal end portion of the shaft portion 4 and a shaft portion 4 that suspends from the distal end portion of the second inclined surface 18.
A horizontal plane 19 is formed that is orthogonal to the axis of and extends in a direction approaching the peripheral surface S of the shaft portion 4.

Since the retaining projections 16 are provided in correspondence with the two pairs of openings 14, the number thereof is two.
Of the two pairs of retaining projections 16, one pair of lower retaining projections 16
The X's are in axially symmetric positions with each other, and similarly, the other pair of upper retaining projections 16Y are also in axially symmetric positions. The lower retaining projection 16X of one pair and the upper retaining projection 16Y of the other pair are located at different positions in the axial direction of the shaft portion 4, and similarly in the circumferential direction of the shaft portion 4. At different positions, that is, in this case, from the viewpoint of molding and strength, the arc corresponding to the central angle of 90 ° is set as the interval between the lower retaining projection 16X and the upper retaining projection 16Y which are a pair. preferable.

Next, the operation of this embodiment will be described.
To attach the clamp 1 to the mounting frame 20, refer to FIG.
As shown in FIG. 2, the support part 3 of the clamp 1 may be held and the shaft part 4 may be inserted into the through hole 21 of the mounting frame 20 from the surface side of the mounting frame 20. Lower stopper protrusion 1 of the first section 11 located at the tip
When 6X engages with the peripheral edge of the through hole 21 and is pressed, it is elastically deformed so as to bend inward with the base P as a fulcrum, and is pushed into the opening 14.

In this way, the upper retaining projection 16Y of the first section 11 and the lower retaining projection 16X of the second section 12 are sequentially pushed into the opening 14 in this order. When the tip portion of the shaft portion 4 penetrates the through hole 21 of the mounting frame 20 and projects from the back surface of the mounting frame 20, first, the spring that tries to return to the original position of the lower retaining projection 16X of the first section 11. By the force, the lower retaining protrusion 16X bends outward with the base portion P as a fulcrum, and the opening portion 14 formed in the peripheral wall of the shaft portion 4.
It goes out of and returns to the original position.

In this manner, the upper retaining protrusion 16Y of the first section 11 and the lower retaining protrusion 16X of the second section 12 are sequentially ejected from the opening 14 to the original position in this order.
By the way, in order to fix the clamp 1 to the mounting frame 20, the clamp 1 is elastically deformed by bending so that the elastic piece 10 formed on the support portion 3 is brought into contact with the surface of the mounting frame 20 and pushed outward. Push in until

Then, as shown in FIG. 3, for example, at the time when the upper retaining projection 16Y of the third section 13 comes out of the opening 14 and engages with the peripheral portion of the through hole 21 on the rear surface of the mounting frame 20, the clamp 20 is pressed. Stop pushing. At this point in time, the clamp 1 is mounted on the mounting frame 20 such that the elastic piece 10 presses the surface of the mounting frame 20 to engage the surface thereof, while the horizontal surface 19 of the upper retaining projection 16Y engages the rear surface of the mounting frame 20. It will be firmly fixed to the frame 20.

The above is t when the plate thickness of the mounting frame 20 is relatively thin, but when the plate thickness of the mounting frame 20 is relatively thick T, for example, the lower stopper projection 16 of the first section 11 is provided.
The horizontal surface 19 of X is engaged with the back surface of the mounting frame 20.
As described above, since the retaining projections 16 are arranged at a predetermined interval in the axial direction of the shaft portion 4, for example, as shown by a broken line in FIG. 3, the lower retaining projections 16X have a horizontal plane 19 and an upper side. It seems that the clamp 1 is not firmly fixed to the mounting frame 20 when the rear surface of the mounting frame 20 is located between the retaining projection 16Y and the horizontal surface 19.
In this case, it suffices to further press the clamp 1 against the spring force, which is the elastic deformation resistance force of the elastic piece 10, and then the upper retaining projection 16Y comes out from the opening 14 and the mounting frame 20.
Since it engages with the back surface of the clamp 1, the clamp 1 is firmly fixed to the mounting frame 20 in combination with the spring force of the elastic piece 10.

After fixing the clamp 1 to the mounting frame 20 in this manner, the pipe 2 to be supported by the clamp 1 is pushed between the pair of holding pieces 5 of the support portion 3 to hold both holding pieces 5.
The pipes 2 by pushing them apart from each other.
Is pushed into the groove 6. As described above, in this embodiment, the shaft portion 4 of the clamp 1 has the first, second and third sections 11, 12 and 1.
Since it is divided into three sections of 3 and a set of the lower retaining projection 16X and the upper retaining projection 16Y is formed in each section, the plate thickness is smaller than that of a conventional clamp having only one section. It can also be used for thick mounting frames. By the way, the conventional clamp can be used only for the mounting frame having a thickness in the range of 4.8 mm to 10 mm.
The clamp according to this embodiment can also be used for a mounting frame having a thickness of 25 mm or more.

As described above, since the clamp according to the present embodiment can be applied to the mounting frame having various thicknesses as compared with the conventional clamp, it is not necessary to prepare the clamp according to the thickness of the mounting frame, and therefore the cost is reduced. In terms of advantages, it is not necessary to use various clamps properly, and work efficiency is improved. In addition, in the said Example, although the 3rd area | region of the 1st, 2nd, and 3rd area | region 11,12,13 was demonstrated as an example, the number of areas is not restricted to this and can be set arbitrarily.

[0028]

According to the first aspect of the present invention, the shaft portion of the clamp is divided into a plurality of sections, and a pair of the lower retaining projection and the upper retaining projection are formed in each section. It can also be applied to a frame having a relatively thick plate thickness as compared with the conventional example having only one section. Therefore, since it is not necessary to prepare a clamp of a type corresponding to the difference in the plate thickness of the frame, it is possible to unify the parts.

Further, since it is not necessary to prepare a plurality of types of clamps, that is, the parts can be unified, the manufacturing cost for manufacturing different types of clamps can be reduced, and the stocks for the stocks can be reduced. It is possible to save space, which is advantageous in terms of cost. Further, since it is not necessary to properly use the clamps according to the plate thickness of the frame, it is not necessary to perform extra work such as selection of clamps, thus improving work efficiency.

[Brief description of drawings]

FIG. 1 is a front view of a clamp showing an embodiment of the present invention.

FIG. 2 is likewise a side view of the clamp.

FIG. 3 is a front view showing a usage state of the clamp.

FIG. 4 is a front view of a conventional clamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamp 3 Support part 4 Shaft part 10 Elastic piece 11, 12, 13 Section 14 Opening 16X One pair of lower stopper protrusions 16Y The other pair of upper stopper protrusions 17 First inclined surface 20 Mounting frame 21 Through hole Peripheral surface of S-axis

Claims (1)

[Claims] 1. A support part and a cylindrical shaft part extending from the support part, wherein the shaft part is inserted into a through hole formed in a plate-shaped mounting frame to be integrated with the support part. The elastically deformable elastic piece formed on the shaft portion and the elastically deformable retaining projection piece integrally formed on the shaft portion, and the elastic member is engaged with the back surface of the mounting frame. In a clamp made of plastic, which is fixed to the mounting frame by pressing a surface of the mounting frame with a spring force, the retaining projection is separated from a peripheral surface of the shaft portion as the distance from the tip portion of the shaft portion increases. A first slope that is inclined in the direction of separation and that is displaced into the opening formed in the peripheral wall of the shaft portion by being pressed by engaging with the peripheral edge portion of the through hole when the shaft portion is inserted into the through hole. Has a face,
Further, the shaft portion has a plurality of sections set by dividing the shaft portion into a plurality of portions in the axial direction, and at least two pairs of retaining projections are formed in each section, and the lower side of one pair. A clamp, wherein the retaining projection and the other pair of upper retaining projections are formed at different positions in the axial direction and the circumferential direction of the shaft portion.