JP4578347B2 - Fixing mechanism - Google Patents

Description

  The present invention belongs to the technical field of a fixing mechanism for attaching a component to a plate material.

For example, there is a fixing mechanism for attaching a clamp, a cable tie or the like to a plate material. The fixing mechanism is usually integrated with a clamp or the like which is a functional part.
As an example of such a fixing mechanism, there is a rotating type fixing member described in Japanese Patent Laid-Open No. 51-5445 (Patent Document 1).

The fixing member of Patent Document 1 has a structure in which a non-circular support plate and an elastic plate are connected by a scissors, and a mounting hole through which the support plate can pass is provided in a plate material to which the fixing member is attached. This fixing member passes the support plate from the hole to one side of the plate, the hook is inserted into the mounting hole, and the elastic plate is turned to the other side and then rotated around the hook, thereby making the plate Install. When removing, the reverse operation may be performed, but the protrusion provided on the elastic plate prevents the rotation in the removing direction so as not to be carelessly removed or loosened.
Japanese Patent Laid-Open No. 51-5445

  The rotation-type fixing mechanism disclosed in Patent Document 1 is only a support plate that protrudes to one side of the plate material, so that the space is saved by that amount, but a space for rotation is required. is there.

  Moreover, when rotating, the protrusion provided on the elastic plate may be scraped by the edge of the plate material. Then, there are problems such as wobbling after the attachment, or removing the once attached, making it difficult to reuse it.

Furthermore, when holding another object like a clamp or a cable tie, there is a problem that the fixing mechanism cannot be rotated and removed as it is.
That is, there has been a demand for a fixing mechanism that saves space, is not damaged during installation or removal, and is easy to remove.

  The fixing mechanism according to claim 1, a supporting column, a retaining plate extending from the supporting column along a direction orthogonal to the axis of the supporting column, an elastic plate extending from the supporting column, A stopper projection extending from the distal end portion of the elastic plate to the retaining plate side, an operation piece extending from the distal end portion of the elastic plate to the opposite side of the stopper projection, and a hook provided on the operation piece A protrusion and a protrusion receiver for the hook protrusion are provided.

  The fixing mechanism according to claim 1, wherein the elastic plate is elastically deformed by contact with the plate member when the post portion is inserted into a through-hole provided in the plate member and the retaining plate is positioned on the back side of the plate member. Then, when the fixing mechanism is moved along the surface of the plate material, a part or all of the retaining plate comes out of the through-opening and is in sliding contact with the back surface of the plate material, Since the plate material is sandwiched by the retaining plate by the elastic repulsive force, it is attached to the plate material.

  Further, when attached, the stopper projection is locked to a locking port provided in the plate material, and the fixing mechanism is prevented from moving in a direction to return the retaining plate to the through port side. There is no risk of removal.

On the other hand, when the fixing mechanism is attached to a plate and the stopper protrusion is locked to the locking port, the protrusion receiver is displaced in a direction to bring the protrusion receiver closer to the stopper protrusion. The hooking projection is hooked on the receiver.

  When this hooking protrusion is caught by the protrusion receiver, the operating piece is pressed with the fingertip, and the fixing mechanism is displaced in the opposite direction to the displacement when the hook protrusion is hooked on the protrusion receiver while maintaining the hooked state. Then, the stopper projection is detached from the locking port. Then, when the fixing mechanism is moved along the surface of the plate material in the direction opposite to that at the time of attachment, the retaining plate becomes a position corresponding to the through hole, and the retaining plate is extracted from the through port, that is, the fixing mechanism. Can be removed from the plate.

  The fixing mechanism according to claim 1 is space-saving because only the retaining plate protrudes to one side of the plate material, and only a space for moving along the plate material for attachment and removal is required. .

Since the movement for attachment and removal is movement along the plate material, there is no possibility that the member of the fixing mechanism is scraped at the edge of the through-hole as compared with rotation.
Moreover, since it is not rotated in the removal operation, it can be easily removed even when another object such as a clamp or a binding band is held.

  Conventionally, since it was difficult to extract the stopper protrusion from the locking port, when the fixing mechanism was moved, the fixing mechanism was rotated without removing the stopper protrusion, and a large force was required. In the fixing mechanism described in 1, since the stopper mechanism is moved after the stopper protrusion is removed in advance, the force required for movement is reduced, and at the same time, the stopper protrusion is scraped each time the fixing mechanism is removed. is doing.

Moreover, since it is not rotated in the removal operation, it can be easily removed even when another object such as a clamp or a binding band is held.
Furthermore, when the fixing mechanism is attached to the plate and the stopper protrusion is locked to the locking opening, if the protrusion receiver is displaced in a direction to bring the protrusion receiver closer to the stopper protrusion, the hook protrusion is pulled on the protrusion receiver. Hold the operating piece that is hooking the hooking protrusion on the protrusion receiver with your fingertip, and maintain the hooking state while maintaining the hooking state. When displaced, the stopper projection is released from the locking port, so even if the fixing mechanism is downsized, the force required to move the stopper projection away from the locking port is small. Even if the fixing mechanism is downsized, the fixing mechanism It is easy to remove the plate from the plate material.

According to a second aspect of the present invention, the projected area on a plane orthogonal to the axis of the support column is preferably configured such that the retaining plate is larger than the support plate.
The specific shape of the retaining plate is not particularly limited, but for example, a pair of wings extending in opposite directions across the support column and a direction perpendicular to the extending direction of the wings. It can be formed into a convex shape composed of the projected head, or a shape composed of a pair of wings extending in opposite directions across the support column, circular, rectangular or square.

  The elastic plate is a pair of elastic plates extending in opposite directions to each other with the column portion interposed therebetween, and the stopper projection and the operation piece are provided on at least one of the pair of elastic plates. It is good to provide.

Next, embodiments of the present invention will be described based on examples of the present invention. The present invention is not limited to the following examples and the like, and it goes without saying that the present invention can be implemented in various ways without departing from the gist of the present invention.
[Example 1]
In this embodiment, the fixing mechanism of the present invention is applied to a clamp for holding a long object such as an electric wire or an optical fiber.

The clamp 1 of the present embodiment is a molded product of a synthetic resin such as nylon or polyethylene.
As shown in FIG. 1, in the clamp 1, a band 3 is connected to one end of a base 2. A thin hinge portion 4 is provided at an intermediate portion of the belt portion 3 and can be bent and stretched by the hinge portion 4.

A U-shaped elastic locking portion 5 is connected to the tip of the band portion 3. The elastic locking portion 5 is provided with a projection 6 and the tip is a knob 7.
On the other hand, a connecting portion 8 is erected on the other end portion of the base portion 2, and a receiving hole 9 for receiving the elastic locking portion 5 and a locking receiver 10 for locking the projection 6 are provided at the distal end portion thereof. Is provided.

  The clamp 1 has a base portion 2 as shown in the figure when the belt portion 3 is bent at the hinge portion 4 and the elastic locking portion 5 is inserted into the receiving hole 9 and the protrusion 6 is locked to the locking receptacle 10. Since the closed ring is formed by the band part 3 and the connecting part 8, for example, the electric wire can be held by the closed ring.

  Further, if the elastic locking portion 5 is elastically deformed by applying force to the knob 7 in a state where the above-described closed ring is formed, and the locking between the protrusion 6 and the locking receiver 10 is released, the elastic locking portion 5 Can be extracted from the receiving hole 9, that is, the closing ring can be opened.

Next, the fixing mechanism will be described.
First, in the connecting portion between the base portion 2 and the connecting portion 8, a hooking recess 11 serving as a protrusion receiving portion is provided on the outer periphery of the above-described closed ring.

A column portion 12 is connected to the lower portion of the base portion 2, and a pair of elastic plates 13 and 14 extend from the column portion 12 in directions opposite to each other with the column portion 12 interposed therebetween.
The elastic plates 13 and 14 are curved in a bow shape and are substantially symmetric, but a stopper projection 15 extends downward from the tip of one elastic plate 14.

  Further, an operating piece 16 extends from the tip of the elastic plate 14 on the side opposite to the stopper projection 15, and a hooking protrusion 17 that protrudes toward the hooking recess 11 is provided at the tip of the operating piece 16. ing.

A wing portion retaining plate 18 and a head retaining plate 19 are extended from the distal end portion of the column portion 12.
These are all extended along a direction orthogonal to the axis of the support column 12, but as shown in FIG. 2, there are two blade retaining plates 18, opposite to each other across the support column 12. The head retaining plate 19 extends in a direction perpendicular to the extending direction of the wing retaining plate 18. For this reason, the outline of the lower end surface of the support | pillar part 12, the wing | blade part retaining plate 18, and the head retaining plate 19 is convex. Further, guide surfaces 18 a and 19 a are provided on the wing retaining plate 18 and the head retaining plate 19.

In addition, as illustrated in FIG. 1B, the strength of the wing retaining plate 18 is increased by connecting the reinforcing portion 18b to the wing retaining plate 18 to form an L-shaped structure.
As shown in FIGS. 1C and 2, a plate material (for example, a metal plate of a housing, a printed circuit board, etc.) 20 to which the clamp 1 is attached has a convex through-hole 21 and a circular locking port 22. Is provided.

  The shape and size of the through-hole 21 are slightly larger than the convex contour shape and size of the lower end surfaces of the support column 12, the blade retaining plate 18, and the head retaining plate 19 described above, and the axis of the support unit 12 is aligned. When the column portion 12 is inserted through the through-hole 21 so as to be perpendicular to the surface of the plate material 20, the wing portion retaining plate 18 and the head retaining plate 19 (including the tip portion of the column portion 12) are disposed on the back surface side of the plate material 20. Can be reached.

  At this time, when the wing retaining plate 18 and the head retaining plate 19 enter the through-hole 21, the tip portions of the elastic plates 13 and 14 come into contact with the surface of the plate member 20, so that the wing retaining plate 18 and the head retaining plate In a state where 19 has passed through the through hole 21, the elastic plates 13 and 14 are elastically deformed by a reaction force exerted from the plate material 20.

  When the clamp 1 is moved in a direction in which the wing retaining plate 18 and the head retaining plate 19 pass through the through-hole 21 in a direction in which the head retaining plate 19 faces the locking port 22, the wing retaining plate 18 and The head retaining plate 19 comes off the through-hole 21 and comes into sliding contact with the back surface of the plate member 20.

  Since the wing retaining plate 18 and the head retaining plate 19 are provided with guide surfaces 18a and 19a, there is a possibility that the wing retaining plate 18 or the head retaining plate 19 is scraped by the edge of the through-hole 21 during this movement. Absent.

  When the support column 12 comes into contact with the end side 23 a of the small rectangular portion 23 (portion corresponding to the convex head) of the through-hole 21 and the head retaining plate 19 is in a position hidden behind the plate member 20, the stopper protrusion 15. Therefore, the stopper projection 15 falls into the locking port 22 by the elastic repulsive force of the elastic plate 14 and is locked to the inner periphery of the locking port 22.

In addition, since the inner peripheral dimension of the small rectangular part 23 is slightly larger than the outer peripheral dimension of the column part 12, the column part 12 is in a state of being fitted to the small rectangular part 23 at this time.
When the force exerted on the clamp 1 is released, the elastically deformed elastic plates 13 and 14 sandwich the plate member 20 between the wing portion retaining plate 18 and the head retaining plate 19 by the elastic repulsive force. Is attached to the plate 20. Further, since the stopper projection 15 is locked to the locking port 22, the movement of the clamp 1 in the direction in which the wing portion retaining plate 18 and the head retaining plate 19 are returned to the through port 21 side is prevented. That is, the clamp 1 is fixed to the plate member 20 as shown in FIG.

  3A, in order to remove the clamp 1 fixed to the plate member 20 from the plate member 20, the clamp 1 is first tilted toward the locking port 22, as shown in FIG. Then, as shown in the drawing, the elastic plate 14 is elastically deformed in an upward shape, and the operating piece 16 is displaced so as to rise to the base 2 side, and the hooking protrusion 17 enters the hooking recess 11.

However, the hooking protrusion 17 is not locked or fitted into the hooking recess 11, and the hooking protrusion 17 is detached from the hooking recess 11 when the tilted clamp 1 is returned to its original state.
Next, when the inclination of the clamp 1 is returned while the operating piece 16 is pressed by the fingertip and the hooking protrusion 17 is hooked on the hooking recess 11, the stopper protrusion 15 is moved into the locking port 22 as shown in FIG. Leave.

  And if the clamp 1 is moved contrary to the time of the above-mentioned attachment, pressing the operation piece 16 with a fingertip and hooking the hooking projection 17 on the hooking recess 11, the wing part retaining plate 18 and the head retaining plate 19 can be extracted from the through-hole 21. When the stopper projection 15 is outside the locking port 22, the hook projection 17 may be released from the hook recess 11.

  As described above, in the clamp 1 of this embodiment, only the wing portion retaining plate 18 and the head retaining plate 19 protrude on the lower surface side of the plate member 20 and are moved along the plate member 20 for attachment and removal. It is space-saving because it only needs to have a space.

  The movement for attachment and removal is movement along the plate material 20 and guide surfaces 18a and 19a are also provided. Therefore, the blade retaining plate 18 or the head retaining plate 19 is shaved at the edge of the through hole 21. There is no fear.

  Further, when the clamp 1 is moved for removal, the stopper projection 15 can be easily lifted by using the above-described mechanism, and the lock is released only by the force for rotating the stopper projection 15 by a conventional rotary method or the like. Compared to the above, the stopper protrusion 15 is not scraped off at the edge of the locking port 22 by eliminating the contact portion with the locking port 22.

Moreover, since the clamp 1 is not rotated when it is removed from the plate member 20, even when the clamp 1 holds another object, for example, an electric wire, it can be easily removed as it is.
Furthermore, when the clamp 1 is attached to the plate member 20 and the stopper projection 15 is locked to the locking port 22, the hook recess 11 is displaced in a direction in which the hook recess 11 is brought closer to the stopper projection 15. Since the hooking protrusion 17 is hooked on the hooking recess 11, the operating piece 16 provided with the hooking protrusion 17 is pressed by the fingertip, and the hooking protrusion 17 is held in the hooking recess 11 while maintaining the hooking state. When the clamp 1 is displaced in a direction opposite to the displacement at the time of hooking, the stopper projection 15 is detached from the locking port 22, so that the stopper projection 15 is separated from the locking port 22 even if the clamp 1 is downsized. The required force is small, and the work of removing the clamp 1 from the plate member 20 is easy.

Note that even if the clamp 1 is tilted and the hook protrusion 17 enters the hook recess 11, the hook protrusion 17 is not locked or fitted into the hook recess 11, and the tilted clamp 1 is in its original state. Since the hooking protrusion 17 is detached from the hooking recess 11 by returning to the position, even if the clamp 1 is inclined when not intended, the stopper protrusion 15 is not detached from the locking port 22 only by this. That is, there is no problem that the clamp 1 falls off when not intended.
[Example 2]
In this embodiment, for example, the fixing mechanism of the present invention is applied to a spacer for securing a space between a housing and a printed board. In addition, about the part which is common in Example 1, description is abbreviate | omitted using the same code | symbol as Example 1. FIG.

The spacer 30 of the present embodiment is a molded product of a synthetic resin such as nylon or polyethylene.
As shown in FIG. 4, the spacer 30 is provided with a hooking surface 31 in which one side of the base portion 2 is chamfered to serve as a projection receiver.

A support wall 32 is erected at the center of the base 2, and a contact plate 33 is connected to the upper end of the support wall 32 in parallel with the base 2.
An insertion portion 34 having a vertically long arch shape is erected on the contact surface plate 33. A head portion 34a of the insertion portion 34 is hemispherical, and an elastic locking leg 36 extends downward from a support portion 35 provided on the lower side thereof. The elastic locking leg 36 is provided with a guide inclined surface 37 and a locking surface 38, and a ridge line 39 is formed as a boundary between them.

The spacer 30 is attached to the first plate member 20 (not shown) as in the clamp 1 of the first embodiment.
Further, when the insertion portion 34 is inserted into the insertion port of the second plate member (not shown) from the head portion 34a, the guide inclined surface 37 contacts the inner periphery of the insertion port. The elastic locking leg 36 enters the insertion port while being elastically deformed by a reaction force exerted on the guide inclined surface 37 from the insertion port. Lock to the periphery. As a result, the second plate member is sandwiched between the contact plate 33 and the locking surface 38, and the spacer 30 is attached to the second plate member.

Thus, the space | interval of both board | plate materials is securable by attaching the spacer 30 to the 1st board | plate material 20 and the 2nd board | plate material.
The operation of removing the spacer 30 from the first plate member 20 can be performed in the same manner as in the first embodiment. However, the point that the hooking protrusion 17 is locked to the hooking surface 31 is different from that in the first embodiment.

This spacer 30 also has the same effect as that of the first embodiment with respect to attachment and detachment with respect to the first plate member 20.
[Example 3]
This embodiment is an example in which the fixing mechanism of the present invention is applied to a binding band for binding electric wires and the like. In addition, about the part which is common in Example 1, description is abbreviate | omitted using the same code | symbol as Example 1. FIG.

The binding band 40 of the present embodiment is a molded product of a synthetic resin such as nylon or polyethylene.
As shown in FIG. 5, in the binding band 40, a receiving arm 41 extends from the base 2, and an end portion of the inclined upper surface serves as a hooking surface 42 (projection receiver).

  A gate-shaped portion 43 is connected to the base 2 and forms a band hole 44 together with the base 2. A band 45 extends from the beam portion of the gate-shaped portion 43, and a locking claw 46 that protrudes inside the band hole 44 extends.

  The band 45 has a width and thickness that can be inserted into the band hole 44, but a large number of ridges 46 having a triangular cross-sectional shape are arranged in parallel on one side. When the band 45 is inserted into the band hole 44, any one of the protrusions 46 is locked to the locking claw 46.

The binding band 40 is attached to the plate material 20 (not shown) in the same manner as the clamp 1 of the first embodiment.
When the band 45 is inserted into the band hole 44 to form a ring, an electric wire or the like is passed through the ring, and the band 45 is pulled to tighten the ring. Then, any of the ridges 46 of the band 45 is prevented from being loosened by being latched by the latching claws 46, so that the electric wires and the like are bound.

Although the work of removing the binding band 40 from the plate member 20 can be performed in the same manner as in the first embodiment, the point that the hooking protrusion 17 is hooked on the hooking surface 42 is different from that in the first embodiment.
The binding band 40 also has the same effect as that of the first embodiment with respect to attachment and detachment with respect to the plate material 20.

The front view (a) of a clamp of Example 1, a modification (b), and a top view (c) of a penetration mouth and a lock mouth. Explanatory drawing of the attachment procedure of the clamp of Example 1. FIG. Explanatory drawing of the removal procedure of the clamp of Example 1. FIG. The front view of the spacer of Example 2. FIG. The front view of the binding band of Example 3. FIG.

Explanation of symbols

1 ... Clamp,
2 ... Base,
11 ... Hook recess (projection receptacle),
12 ... Stand part
13, 14 ... elastic plate,
15 ... Stopper projection,
16 ... operation piece,
17 ... Hook projection,
18 ... wing retaining plate,
19: Head retaining plate,
20 ... Plate material,
21 ... through hole,
22 ... locking hole,
30 ... spacer,
31 ... Hook surface,
40 ... Bundling band,
42 ... Hook surface.

Claims (3)

A strut,
A retaining plate extending from the column along a direction perpendicular to the axis of the column,
An elastic plate extending from the support column;
A stopper projection extending from the tip of the elastic plate toward the retaining plate,
An operation piece extending from the tip of the elastic plate to the opposite side of the stopper projection;
A hooking protrusion provided on the operation piece;
A fixing mechanism comprising a projection receiver for the hooking projection,
The elastic plate is elastically deformed by contact with the plate material when the post portion is inserted into a through-hole provided in the plate material and the retaining plate is positioned on the back side of the plate material,
After that, when the fixing mechanism is moved along the surface of the plate,
A part or all of the retaining plate is slidably in contact with the back surface of the plate member from the through hole,
The elastically deformed elastic plate sandwiches the plate material with the retaining plate by its elastic repulsive force;
The stopper projection is locked to a locking port provided in the plate material to prevent the fixing mechanism from moving in a direction to return the retaining plate to the through port side,
The hook projection is hooked on the projection receiver when the projection receiver is displaced in a direction to bring the projection receiver closer to the stopper projection in a state where the stopper projection is locked to the locking opening. And fixing mechanism. The fixing mechanism according to claim 1,
The fixing mechanism characterized in that a projection area onto a plane orthogonal to the axis of the support column is larger in the retaining plate than in the support column. The fixing mechanism according to claim 1 or 2,
A pair of elastic plates extending in opposite directions to each other with the support column interposed therebetween,
The stopper mechanism and the operation piece are provided on at least one of the pair of elastic plates.

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