JP2002021831A - Snap structure of mounting parts - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To provide a snap structure in which a mounted part can be detached by a simple operation without breaking a snap part provided on the mounted part. SOLUTION: A snap portion 111 provided on a wire saddle 100 has a stem 112 which can be inserted through a mounting hole 201 opened in a chassis 200, and a mounting portion 201 which is provided at a distal end portion of the stem 112 and is elastically deformed. A plurality of possible lance pieces 114, a locking projection 115 provided on the outer surface of the lance piece in a protruding state, and a plate thickness direction provided at the base end of the stem 112 and having a size larger than the mounting hole 201. And an elastically deformable wing piece 113. Locking projection 1
Reference numeral 15 denotes a configuration in which the rear surface side of the chassis 200 is brought into contact with the opening edge of the mounting hole 201 when the mounting hole 201 is inserted through the mounting hole 201 and rotated at a required angle along the surface of the chassis 200. By simply turning the wire saddle 100, the attachment and detachment of the wire saddle can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snap structure for mounting various components mounted on a vehicle or an electronic device to a chassis or a substrate by one-touch operation, and more particularly to a snap structure which can be easily mounted and detached. is there.

[0002]

2. Description of the Related Art In a vehicle electrical device, in order to hold a cable for electrically connecting various electrical components on a vehicle body (chassis) or the like, a component such as a clamp is fitted in a hole opened in the chassis in a fitted state. The configuration is taken. Also,
2. Description of the Related Art In an electronic device or the like, in order to hold a substrate constituting an electronic circuit in a device housing (chassis), a structure such as a spacer or the like holding a substrate is fitted in a mounting hole opened in the chassis in a fitted state. Has been taken. As a structure for fitting such components such as a clamp and a spacer to a chassis or the like, an arrowhead structure (lance structure) has conventionally been used. FIG. 11 is a cross-sectional view of one example of this, which is an example applied to a clamp for holding a cable or a wire extending along a chassis surface. This clamp is called a wire saddle, and the wire saddle 100 is provided at an upper open end of the U-shaped piece in order to prevent the wire W inserted through the U-shaped piece 102 having a U-shape from coming off. And a snap part 1 integrally provided on the bottom surface of the clamp part 101.
31. The snap part 131 includes a stem 132 protruding downward from the bottom surface of the clamp part 101, and a pair of wing pieces 133 wing-likely enlarged downward and outward from a location near the upper end of the stem 132.
The stem 132 is opposed to these wing pieces 133.
And a pair of lance pieces 134 having an arrowhead shape that gradually expands toward both outsides and having a step 135 at the tip end.

The wire saddle 100 is mounted on a chassis 20.
0 in the rectangular mounting hole 221 provided in the
If the 31 is inserted, the pair of lance pieces 134 can insert the stem 132 while being elastically deformed inward, respectively.
After the insertion, each lance piece 134 is elastically restored and widens, and each step 135 of each lance piece 134 contacts the opening edge of the mounting hole 231 from the back side of the chassis 200, so that the pair of wing pieces 133 and The chassis 200 is located between each lance 134.
Is held in the thickness direction, and as a result, the wire saddle 100 is mounted on the chassis 200.
In this manner, the wire saddle 100 is connected to the chassis 2
In a state where the wire W is mounted on the surface of the chassis 200, the wire W can be held by inserting the wire W extending on the surface of the chassis 200 into the inside of the U-shaped piece 102 while pushing out the separation preventing piece 103.

[0004]

Conventional mounting parts such as the above-described wire saddle having a snap part having such a structure are mounted in the mounting holes 221 of the chassis 200 as described above. Can be mounted very simply. However, when the wire saddle 100 once mounted is removed from the chassis 200, the pair of lance pieces 134 are elastically deformed inward on the back side of the chassis 200 as shown by reference numeral C in FIG. It is necessary to remove the wire saddle 100 from the opening edge of the wire 221 and to pull out the wire saddle 100 upward while maintaining the state.
Therefore, operation on the rear side of the chassis is required, and the operability at the time of detachment is extremely poor. In particular, when such a mounting structure having a snap structure is mounted on an automobile or the like, it is almost impossible to work on the rear side of the chassis. For this reason, it is necessary to forcibly pull out the mounting component, break the snap portion, and detach. Therefore, it is difficult to meet the recent demand for the recycling of mounted parts.

An object of the present invention is to provide a snap structure in which a mounting part can be mounted and demounted by a simple operation without breaking a snap part.

[0006]

A first snap structure according to the present invention is a mounting component having a snap portion which fits into a rectangular mounting hole opened in a chassis, wherein the snap portion is provided with the mounting hole. A stem that can be inserted, a plurality of lance pieces that are provided at the distal end of the stem and that can insert the mounting hole when elastically deformed, and a locking projection that is provided in a protruding state on the outer surface of the lance piece. A wing piece provided at a base end portion of the stem and having a size larger than the mounting hole and capable of being elastically deformed in a plate thickness direction, wherein the locking projection is mounted when the mounting hole is inserted. The lance piece is elastically deformed inward by abutting against the opening edge of the hole, and the rear side of the chassis when the mounting hole is inserted and rotated at a required angle along the chassis surface. At the opening edge of the mounting hole Characterized in that it is a contact by the configuration.

A second snap structure according to the present invention is a mounting component having a snap portion that fits into a substantially triangular mounting hole opened in a chassis, wherein the snap portion can be inserted through the mounting hole. A plurality of stems, a locking projection provided on the outer surface of the stem in a protruding state, and a wing provided on a base end of the stem and having a size larger than the mounting hole and elastically deformable in a plate thickness direction. And each of the stems is formed to have a triangular shape corresponding to the shape of the mounting hole when the outer surface is enveloped in a plane direction, and each of the locking projections is formed when the outer surface is enveloped in a plane direction. The triangle that matches the shape of the mounting hole and encloses the stem is approximately 18
It is characterized in that it is formed to be a triangle oriented in the opposite direction by 0 degrees.

In the first snap structure of the present invention, when the snap portion is pushed into the mounting hole, the locking projection comes into contact with the opening edge of the mounting hole, and at that time, the contact force from the mounting hole to the inside. Then, the lance piece is elastically deformed inward to be inserted through the mounting hole. When the snap projection is rotated in the plane direction with the locking projection inserted through the mounting hole, the locking projection is rotated on the rear surface side of the chassis along the opening edge of the mounting hole, and the opening of the mounting hole is removed. It is located directly below. As a result, the chassis is sandwiched between the wing pieces elastically contacting the surface of the chassis and the locking projections, and the mounted components are fixedly supported on the chassis. Also, by rotating in the opposite direction from the mounted state, the lance piece is elastically deformed inward by the opening edge of the mounting hole, so that the locking projection can be inserted through the mounting hole at a required rotation position, The lance piece can be pulled out from the mounting hole, and the mounted component can be detached from the chassis.

In the second snap structure of the present invention, the orientation of the mounting part is determined so that the triangle of the locking projection corresponds to the triangle of the mounting hole, and then the snap part is pushed into the mounting hole, so that the locking projection is formed. Rotates the mounted component in the plane direction with the mounting hole inserted. Due to this rotation, the locking projection is rotated on the rear surface side of the chassis along the opening edge of the mounting hole, and the locking projection is positioned immediately below each side of the triangle of the mounting hole. Thus, the chassis is sandwiched between the wing pieces and the locking projections, and the mounted components are fixedly supported on the chassis. Further, by rotating in the opposite direction from the mounted state, each locking projection is positioned at each corner of the mounting hole, so that the stem can be pulled out from the mounting hole, and the mounted component is detached from the chassis. It becomes possible.

[0010]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1A is a perspective view of a first embodiment in which the snap structure of the present invention is applied to a wire saddle. The wire saddle 100 includes a clamp 10
1 and a snap portion 111, which are integrally formed by resin molding. The clamp portion 101 has a U-shaped piece 102 having an upward U-shape and a U-shaped piece 102 in order to prevent a wire inserted into the U-shaped piece 102 from coming off, as in the related art. It is composed of a pair of detachment prevention pieces 103 projecting obliquely inward from the upper opening end and elastically deformable at each base end. In this clamp part 101, a wire (cable) (not shown) is inserted into the U-shaped piece 102 while elastically deforming the detachment preventing piece 103 inward, whereby the
1, a wire inserted in the same manner as the conventional wire saddle shown in FIG. 1 is held in the U-shaped piece 102 in a state where the wire is prevented from being detached by the detachment preventing piece 103.

The snap part 111 is a perspective view of the snap part 111 seen from below in FIG.
(B) and (c) show a front view, a bottom view, and a cross-sectional view taken along the line AA, a thick plate-like stem 112 protruding downward from the center of the bottom surface of the U-shaped piece 102 of the clamp portion 101,
The U-shaped pieces 1 are provided on both sides of the upper end of the stem 112.
02, a pair of wings 113 extending in a wing-like shape from the bottom surface toward the outer side, and a pair of wings 113 formed toward the outer side from the lower end of the stem 112 so as to face the wings 113, respectively. And a lance piece 114. Each of the lance pieces 114 is configured as a plate piece that is tapered toward both ends from the lower end to the upper end of the stem 112 at both sides of the stem 112 in the thickness direction. The upper end of each of the lance pieces 114 is bent substantially in parallel with the stem 112, and the respective lance pieces 1 near the upper end are formed.
On the outer surface of the projection 14, a locking projection 115 having a triangular shape having an apex angle of approximately 90 degrees as viewed from the plane and having a vertex ridge line tapered along each of the lance pieces 114 is provided outward. It is formed so as to project toward it.

On the other hand, as shown in FIG. 1B, a substantially square mounting hole 201 is opened in the chassis 200 on which the wire saddle 100 having the above configuration is mounted. The side length of the vertical side 202 of the mounting hole 201 in the figure is formed to be substantially the same as the width of the stem 112 of the snap portion 111 of the wire saddle 100. Further, the side length of the horizontal side 203 in the figure is formed to be a length dimension in which each upper end of the lance piece 114 can be fitted. In this embodiment, each of the locking projections 1 provided on the lance piece 114 is provided on the vertical side 202 of the mounting hole 201.
An escape recess 204 having a slightly enlarged width is provided so that the bottom of the recess 15 can be fitted.

The wire saddle 10 configured as described above
The procedure for mounting the “0” in the mounting hole 201 of the chassis 200 will be described with reference to FIG. In addition, FIG. 4 is FIG.
14 shows an aspect in which the lance piece 114 is elastically deformed at the same AA line cross-sectional position. First, as shown in FIG. 4A, the wire saddle 100 is turned at an angle of approximately 45 degrees in the plane direction with respect to the vertical side 202 and the horizontal side 203 of the mounting hole 201, and the snap portion 111 is pushed into the mounting hole 201. go. As a result of this pushing, the locking projection 115 of the lance piece 114 causes the ridge line of the apex to abut on the corner of the mounting hole 201, and at that time receives an abutting force from the opening edge of the mounting hole 201 inward. The two lance pieces 114 are elastically deformed inward, and the lance pieces 1
14 is inserted through the mounting hole 201. At this time, the wing piece 113
Is brought into contact with the surface of the chassis 200 to be elastically deformed upward. Then, the wire saddle 100 is rotated in the plane direction with the locking projection 115 inserted through the mounting hole 201. By this rotation, the locking projection 115 is moved on the rear surface side of the chassis 200 along the vertical side 202 of the mounting hole 201 as shown in FIG.
When the is rotated by 45 degrees, the locking protrusion 115 is located immediately below the vertical side 202 of the mounting hole 201 as shown in FIG. At the same time, each lance piece 114 is released from a state in which it abuts on the vertical side 202 and the horizontal side 203 of the mounting hole 201 at the same time. Is brought into contact with the opening edge of each vertical piece 202. At this time, the bottom of the locking projection 115 provided on each lance piece 114 is attached to the mounting hole 201.
Is fitted in the escape concave portion 204, so that a click feeling indicating that the mounting is completed is obtained. Therefore, it is not necessary to provide independent projections and holes in the snap portion in order to obtain a click feeling, which is advantageous in simplifying the structure.

FIG. 5 is a sectional view of the snap portion 111 of the wire saddle 100 thus attached. In this state, the pair of wing pieces 113 of the snap portion 111 are elastically contacted with the surface of the chassis 200, and the pair of lance pieces 114
Each of the locking projections 115 is elastically contacted with the back surface of the chassis 200, and the upper end thereof is elastically contacted with the opening edge of the vertical side 202 of the mounting hole 201. Accordingly, the chassis 200 is sandwiched between the wings 113 and the locking projections 115 in the thickness direction, and as a result, the wire saddle 100 is mounted in the mounting hole 201 of the chassis 200. Note that, in this state, the outer surface of each lance piece 114 is
Since the frictional force is generated when the wire saddle 100 is brought into contact with the opening edge of the wire 2, the wire saddle 100 is not rotated even if some external force is applied to the wire saddle 100, and the mounted state can be kept stable. Will be possible.

When the wire saddle 100 mounted as described above is removed from the chassis 200, FIG.
The wire saddle 100 may be rotated in the direction opposite to that shown in FIG. By this rotation, each lance piece 114 is brought into a state in which both side edges abut against the opening edge of each side of the mounting hole 201, and as shown in FIG.
4 is elastically deformed inward and is rotated by an angle of 45 degrees, and as shown in FIG.
1 is located at the corner. Therefore, by pulling up the wire saddle 100 in this state, the lance 11
4 can be pulled out from the mounting hole 201.

As described above, by simply turning the wire saddle 100 with respect to the chassis 200, the snap portion 111
It becomes possible to stably maintain the mounted state. Further, when detaching the wire saddle 100 from the chassis 200, the wire saddle 100 only needs to be turned in the opposite direction, and can be removed extremely easily. For this reason, unlike the related art, the operation on the rear side of the chassis is not required for detachment, and the wire saddle can be recycled without being damaged. In the first embodiment, the wire saddle 1
Since only 00 needs to be rotated by 45 degrees, the rotation space required for mounting may be small, and even when the wire saddle is mounted in a place where the mounting space is narrow, it can be easily attached and detached. is there. Also, regardless of the direction in which the wire saddle is rotated, attachment and detachment are possible.

FIG. 6A is a perspective view of a second embodiment in which another snap structure of the present invention is applied to a wire saddle in the same manner as the above embodiment. FIG. 7 is a perspective view of the snap portion viewed from below. 8 (a), 8 (b),
(C) is the front view, bottom view, and BB line sectional view of a snap part. In the second embodiment, since the configuration of the clamp unit 101 is the same as that of the first embodiment, the same reference numerals are given and the description is omitted. On the other hand, the snap portion 121 has the first
A wing piece 122 similar to that of the embodiment is provided, but a lance piece is not provided, and three stems 123 and 12 are provided.
4,125. The three stems 123, 1
Reference numerals 24 and 125 denote U-shaped pieces 102 of the clamp portion 101.
Are protruded in parallel from the bottom surface at a required interval in a triangular position at a required interval, one of the stems 123 has a rectangular plate shape, and the other two stems 124 and 125 have a cross-sectional shape. Has a bow piece shape.
Further, at the lower ends of the three stems 123, 124, 125, projecting piece-shaped locking projections 126, 127, 128 projecting outward in an arc shape are provided integrally. Here, the three locking projections 126, 127,
As shown by a two-dot chain line in FIG. 8 (b), the shape surrounding the outer edge of the 128 is a substantially equilateral triangle with rounded corners, and the outer surfaces of the three stems 123, 124, 125. As shown by a dashed line in FIG. 8 (c), the corners of substantially the same shape, which are different from the triangle obtained by enveloping the locking projections 126, 127, 128, and have a 180-degree direction, are rounded. It is formed as an equilateral triangle. Here, the lengths of the stems 123, 124, 125 are formed to be slightly longer than the thickness of the chassis to be mounted.

As shown in FIG. 6B, the chassis 200 on which the wire saddle 100 is mounted has corner portions substantially in the same manner as an equilateral triangle enclosing the outer surfaces of the locking projections 126, 127, and 128. A mounting hole 211 having a rounded equilateral triangle is opened. In this embodiment, the curvature of one corner 212 of the mounting hole 211 is different from the curvature of the other corner. A relief recess 213 is provided on the side of the mounting hole 211 corresponding to the base of the triangle so that one stem 123 located at a position corresponding to the vertex of the enclosing equilateral triangle can be fitted.

The wire saddle 10 configured as described above
The procedure for mounting the “0” in the mounting hole 211 of the chassis 200 will be described with reference to FIG. Note that FIG. 9 shows the state shown in FIG.
Of the stems 123, 124, 1 at the same BB line cross-sectional position
25 illustrates an aspect when 25 is elastically deformed. First, FIG.
As shown in (a), the wire saddle 100 is approximately 60 degrees in the plane direction with respect to the mounting hole 211 so that the equilateral triangle of the locking projections 126, 127, and 128 corresponds to the equilateral triangle of the mounting hole 211. The snap part 121 is then pushed into the mounting hole 211. Then, the wire saddle 100 is rotated in the plane direction with the locking projections 126, 127, 128 inserted through the mounting holes 211. Due to this rotation, the locking projections 126, 127, 128 are moved on the back surface side of the chassis 200 along each side of the mounting hole 211, and at the time when the wire saddle 100 is rotated 60 degrees,
As shown in FIG. 9B, the locking projections 126, 127, 128
Are located just below the approximate center of each side of the equilateral triangle of the mounting hole 211. At this time, one stem 123 is attached to the mounting hole 21.
Since the fitting is completed in the escape recess 213, a click feeling indicating that the mounting is completed can be obtained. Therefore, also in this embodiment, it is not necessary to provide independent protrusions and holes in the snap portion in order to obtain a click feeling, which is advantageous in simplifying the structure.

FIG. 10 is a sectional view of the snap portion 121 of the wire saddle 100 thus attached.
In this state, the pair of wing pieces 122 of the snap part 121 are in elastic contact with the surface of the chassis 200, and the three stems 12
3, 124, 125 locking projections 126, 127, 12
8 is elastically contacted with the back surface of the chassis 200. Therefore,
The wing piece 122 and the locking projections 126, 127, 128 sandwich the chassis 200 in the plate thickness direction. As a result, the wire saddle 100 is attached to the mounting hole 211 of the chassis 200.
State. In this state, since the outer surface of each of the stems 123, 124, and 125 is elastically contacted with the opening edge of the mounting hole 211 to generate a frictional force, even if a slight external force is applied to the wire saddle 100, the wire saddle 100 is not moved. It is not rotated, and the mounting state can be kept stable.

When the wire saddle 100 mounted as described above is removed from the chassis, the wire saddle 1000 may be turned by 60 degrees in the direction opposite to that shown in FIG. By this rotation, each locking projection 126, 127,
128 are located at each corner of the mounting hole 211. Therefore, by pulling up the wire saddle 100 in this state, the stems 123, 124, 125 are attached to the mounting holes 211.
It becomes possible to pull out from. In this embodiment, since the curvature of one corner 212 of the mounting hole 211 is different from the curvature of the other corner, the wire saddle 100 is rotated in the opposite direction from the state of FIG. 9B. In some cases, the locking projection 126 cannot be pulled out of the mounting hole 211 even if it is turned by 60 degrees. In other words, it is rotated only in one direction to perform the detachment.

As described above, also in the second embodiment, the wire saddle 100 can be mounted on the snap portion 121 only by rotating the wire saddle 100 with respect to the chassis 200, and the mounted state can be stably maintained. It is possible to hold. Further, when detaching the wire saddle 100 from the chassis 200, the wire saddle 100 only needs to be turned in the opposite direction, and can be removed extremely easily. Therefore, as before,
At the time of detachment, the operation on the rear side of the chassis is unnecessary, and the wire saddle can be recycled without being damaged. In the second embodiment, since the rotation direction at the time of detaching the wire saddle is limited, the wire saddle is less likely to fall off the chassis, which is advantageous for performing stable fixed support. Become. Further, this is effective when the amount of protrusion of the locking projection on the rear surface side of the chassis is smaller than in the first embodiment, and there is little space in the thickness direction on the rear surface side of the chassis.

Here, the first and second embodiments are examples in which the snap structure of the present invention is applied to a wire saddle. However, spacers for fixing and supporting a circuit board on a chassis at required intervals, The present invention can be applied to various mounting parts such as a clamp for fixing a cable attached to a circuit board with a belt and fixing and supporting the cable to a chassis. In the case of a component to be mounted on a circuit board, the circuit board may be configured as a chassis. In addition, the snap structure of each of the above embodiments is an example, and it goes without saying that the shape of the lance piece, the shape of the stem, the shape of the locking projection, and the shape of the mounting hole can be appropriately changed.

[0024]

As described above, according to the present invention, after the snap part of the mounting part is inserted into the mounting hole provided in the chassis, the mounting part is rotated, that is, the snap part is rotated. The mounting projection of the snap part is brought into contact with the opening edge of the mounting hole on the rear surface side of the chassis, and the mounting part is held in a state where the chassis and the like are sandwiched between the wing pieces abutting on the front surface side of the chassis. Can be fixedly supported. Further, when detaching the mounted component, the mounting component can be turned into a state in which the mounting hole can be inserted by rotating the mounted component, that is, by rotating the snap portion, and the mounted component can be detached from the chassis. Will be possible. As a result, when the mounting component is detached from the chassis, the operation on the rear side of the chassis is not required, and the detaching operation can be easily performed, and the mounting component is not damaged, and the mounting component is recycled. It is also possible to realize.

[Brief description of the drawings]

FIG. 1 is an external perspective view in which a snap structure according to a first embodiment of the present invention is applied to a wire saddle and a plan view of mounting holes.

FIG. 2 is a perspective view of a snap portion viewed from below.

FIG. 3 is a front view, a bottom view, and a cross-sectional view taken along line AA of the snap portion.

FIG. 4 is a view for explaining a mounting state at a snap portion.
It is sectional drawing of the same AA line position as (c).

FIG. 5 is a cross-sectional view of the wire saddle according to the first embodiment in a mounted state.

FIG. 6 is a perspective view of an external appearance in which a snap structure according to a second embodiment of the present invention is applied to a wire saddle and a plan view of a mounting hole.

FIG. 7 is a perspective view of the snap portion viewed from below.

FIG. 8 is a front view, a bottom view, and a cross-sectional view taken along the line BB of the snap portion.

FIG. 9 is a view for explaining a mounting state of the snap portion.
It is sectional drawing of the BB line position same as (c).

FIG. 10 is a cross-sectional view of a mounted state of the wire saddle of the second embodiment.

FIG. 11 is a cross-sectional view of a mounted state of a wire saddle having a conventional snap structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 100 Wire saddle 101 Clamp part 102 U-shaped piece 103 Separation prevention piece 111 Snap part 112 Stem 113 Wing piece 114 Lance piece 115 Locking projection 121 Snap section 122 Wing piece 123,124,125 Stem 126,127,128 Locking projection 200 Chassis 201 Mounting hole 211 Mounting hole

Claims (2)

[Claims] 1. A mounting component having a snap portion that fits into a rectangular mounting hole opened in a chassis, wherein the snap portion is provided at a stem through which the mounting hole can be inserted, and at a distal end of the stem. A plurality of lance pieces that can be inserted through the mounting hole when elastically deformed; a locking projection provided on an outer surface of the lance piece in a protruding state; and the mounting hole provided at a base end of the stem. A wing piece elastically deformable in a plate thickness direction having a larger dimension, wherein the locking projection comes into contact with an opening edge of the mounting hole when the lance piece is inserted through the mounting hole, so that the lance piece is internally moved. And elastically deformed toward the other side, and abutted against the opening edge of the mounting hole on the back side of the chassis when the mounting hole is inserted and rotated at a required angle along the chassis surface. Mounting parts, characterized by being Snap structure. 2. A mounting component having a snap portion that fits into a substantially triangular mounting hole opened in a chassis, wherein the snap portion includes a plurality of stems that can be inserted through the mounting hole, and an outer surface of the stem. And a wing piece provided at a base end of the stem and having a size larger than the mounting hole and elastically deformable in a thickness direction of the stem. Are formed so as to form a triangle that conforms to the shape of the mounting hole when enveloped in a planar direction, and each of the locking projections conforms to the shape of the mounting hole when the outer surface is enveloped in a planar direction, and A snap structure for a mounting part, characterized in that it is formed so as to be a triangle oriented substantially 180 degrees in a direction opposite to the triangle enclosing the stem.