JP5152978B2 - Parts mounting structure - Google Patents

Description

  The present invention relates to a component mounting structure for fixing a component main body such as a power supply terminal block for a lighting fixture to the fixture main body with one touch.

As shown in FIG. 4, a conventional mounting structure 100 for mounting a component to a mounting portion with a single touch is to mount the component 103 with a single touch on a mounting substrate 102 in which a mounting hole 101 is formed (see, for example, Patent Document 1).
A pair of elastic mounting legs 104, 104 project downward from the side of the component 103. Both mounting legs 104, 104 project in a direction away from each other and have locking projections 105. Is provided. In each mounting leg 104, the distance between the distal end portions is narrower than the distance between the proximal end portions.

Accordingly, when the component 103 is attached to the attachment substrate 102, the tapered portion 105 a of the locking projection 105 is brought into contact with the inner peripheral surface of the attachment hole 101 of the attachment substrate 102. In this state, by bringing the component 103 close to the mounting substrate 102, the tip of the mounting leg 104 (that is, the locking projection 105) approaches and passes through the mounting hole 101, and then the mounting leg 104 is expanded by elastic force. Thus, the locking projection 105 is locked to the back surface of the mounting substrate 102.
Japanese Patent Laid-Open No. 2-283909 (FIG. 1)

  However, the conventional component mounting structure 100 has a problem that when the external force is applied in the direction of pulling out the component 103, the locking projection 105 is easily damaged because only the locking projection 105 resists. It was. Further, depending on the angle of the mounting leg 104, the pulling force becomes a force in a direction in which the pair of mounting legs 104, 104 are brought closer, and the component 103 may fall off the mounting board 102.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a component mounting structure that makes it difficult to remove a component from a mounted portion and that makes it difficult to damage a locking projection.

The component mounting structure of the present invention includes at least a pair of elastic mounting legs provided on the mounted portion, which are provided protruding from the component and provided with locking projections protruding in directions away from each other at the tip. In the component mounting structure for mounting in a hole, the pair of mounting legs are inclined in a direction approaching each other toward the tip of the first leg portion on the base end side with respect to the locking projection, and the first leg portion The second leg portion that is continuous with the distal end side of the second leg portion is formed so as to be inclined away from each other toward the distal end, and the second leg portion has a locking projection for locking the mounting hole of the mounted portion. Projecting in a direction away from each other, the first leg portion is provided on the base end side with respect to the locking projection, and the lower portion of the mounting leg projects downward from the lower surface of the component, and Between the locking surface of the locking projection and the lower surface of the part A space corresponding to the plate thickness of the mounted portion is provided, and the interval between the locking projections is such that at least the interval between the tips of the outer inclined surfaces of the locking projections is opposed to the mounting holes. When the mounting leg is inserted into the mounting hole of the mounted portion so as to be smaller than the interval between the locking surfaces, first, the locking protrusion provided at the tip of the mounting leg It is set so that the upper end of the inner surface of the mounting hole comes into contact with a part of the outer inclined surface, and the component is moved to the mounted portion side with the mounting leg inserted into the mounting hole. The mounting legs are lowered while being elastically deformed to the inside of the mounting holes, and accordingly, each of the mounting legs is deformed in a direction approaching each other, and the locking projections penetrate the mounting holes. Then, Aise' portion between the second leg and the first leg is on the outside Shy, locking surface of the projection for the locking to lock the lower surface of the mounted portion has a structure.

  With this configuration, the second leg portion provided with the locking projections on the pair of mounting legs is inclined in a direction that extends away from each other toward the tip, so that the part is pulled out from the mounted portion. When this force is applied, the pulling-out force becomes a force in a direction in which the first leg portion is expanded to be aligned with the second leg portion. For this reason, the latching protrusion is biased further in the direction of being caught, so that it is difficult to drop off. In addition, since a part of the pulling force becomes a force for moving the first leg portion outward, it is possible to disperse the force applied to the locking projection and make it difficult to break the locking projection. .

  In the present invention, the second leg portion provided with the locking projections in the pair of mounting legs is inclined in a direction extending away from each other toward the tip, so that the part is pulled out from the mounted portion. When this force is applied, the pulling-out force becomes a force in a direction in which the first leg portion is expanded to be aligned with the second leg portion. For this reason, the latching protrusion is biased further in the direction of being caught, so that it is difficult to drop off. In addition, since a part of the pulling force becomes a force for moving the first leg portion outward, it is possible to disperse the force applied to the locking projection and make it difficult to break the locking projection. It is possible to provide a component mounting structure having the effect described above.

Hereinafter, a component mounting structure according to an embodiment of the present invention will be described with reference to the drawings.
1 is a perspective view of a component mounting structure according to the present invention, FIG. 2 is an enlarged front view of a mounting leg, FIG. 3A is an enlarged front view of the mounting leg at the time of insertion, and FIG. It is an enlarged front view of the attachment leg when it did.

  As shown in FIG. 1, the component mounting structure 10 according to the present invention is configured such that the component 20 is attached to a lighting fixture or the like via mounting portions 30 that are mounted on the left and right side surfaces 21 and 22 of the component 20 such as a power terminal. It attaches to the rectangular-shaped (it may be a round hole) attachment holes 12 and 13 provided in the attachment part 11. FIG. In addition, since the attachment part 30 provided in the both side surfaces 21 and 22 can use the completely same thing, hereafter, the attachment part 30 provided in the side surface 21 is demonstrated.

  The attachment portion 30 attached to the side surface of the component 20 includes an upper member 31 and a pair of elastic attachment legs 32 and 32 extending from the left and right ends of the upper member 31 toward the attachment portion 11 (downward). And are provided. Each mounting leg 32 has a first leg portion 33 on the base end side (upper side) and a second leg portion 34 on the distal end side (lower side) of the first leg portion 33. Each first leg portion 33 is inclined in a direction approaching each other toward the tip, and each second leg portion 34 is inclined in a direction away from each other toward the tip.

  The second leg 34 is provided with a locking projection 35 for locking the mounting hole 12 of the mounted portion 11 so as to protrude away from each other (outside). It is provided on the base end side (above) with respect to the stop projection 35. The locking projection 35 locks the mounted portion 11 between the lower surface 20 a of the component 20, so that the lower portion of the mounting leg 32 protrudes downward from the lower surface 20 a of the component 20.

  The amount of protrusion at this time is such that the mounting surface 11 can be locked between the locking surface 35 a of the locking projection 35 and the lower surface 20 a of the component 20, and the lower surface of the component 20. It is set to such an extent that a space corresponding to the plate thickness t (see FIG. 3 (A)) of the attached portion 11 is provided between 20a. Further, the distance between both the locking projections 35, 35 is at least the distance D1 between the tips of the outer inclined surfaces 35b of the locking projection 35, and the distance D2 between the locking surfaces 12a, 12a facing the mounting hole 12 (FIG. (See (A)).

Next, the mounting operation of the component 20 will be described.
As shown in FIG. 3A, when the attachment portion 30 is inserted into the attachment hole 12 of the attachment portion 11, the outer inclined surface 35 b of the locking projection 35 provided at the tip of the attachment leg 32 becomes the attachment hole 12. Abuts against the upper end of the inner surface.

  Next, when the component 20 is pressed to the attached portion 11 side, as shown in FIG. 3B, the attachment leg 32 is lowered while being elastically deformed inward, and the locking projection 35 penetrates the attachment hole 12. The mounting leg 32 returns to the outside. As a result, the locking surface 35 a of the locking projection 35 locks the lower surface of the attached portion 11, and the component 20 can be attached to the attached portion 11. When the locking projection 35 passes through the mounting hole 12, the pair of mounting legs 32 are deformed in a direction approaching each other, but the second leg portion 34 is inclined in a direction of expanding outward toward the tip. Therefore, compared with the case where the front ends of the mounting legs are in contact with each other like the conventional mounting legs, the protruding amount of the locking projection 35 can be increased.

  As described above, according to the component mounting structure 10 described above, the second leg portions 34 provided with the locking projections 35 in the pair of mounting legs 32, 32 are inclined in the direction in which they are separated from each other toward the tip. Therefore, when a force in the direction of pulling out the component 20 from the attached portion 11 is applied, the pulling force expands the first leg portion 33 and becomes a force in a direction to try to align with the second leg portion 34. . For this reason, the locking projection 35 is biased further in the direction of being caught, so that it is difficult to drop off. In addition, since a part of the pulling force becomes a force for moving the first leg portion 33 to the outside, the force applied to the locking projection 35 is dispersed so that the locking projection 35 is hardly damaged. be able to.

The component mounting structure of the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made.
For example, in the above-described embodiment, the case where the attachment portion 30 is provided on the outside of the component 20 by integral molding is illustrated, but the attachment portion 30 is formed separately and attached to the component 20 later. You can also.
In the above-described embodiment, the case where the attachment portions 30 are provided on the quantity side surfaces 21 and 22 of the component 20 has been described, but the number of the attachment portions 30 is arbitrary. Moreover, the shape of the attachment holes 12 and 13 is also arbitrary.

The perspective view of the component attachment structure concerning this invention Enlarged front view of mounting legs (A) is an enlarged front view of the mounting leg at the time of insertion, (B) is an enlarged front view of the mounting leg when the pulling force is applied. Perspective view of conventional component mounting structure

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Parts mounting structure 11 Mounted part 12 Mounting hole 20 Parts 32 Mounting leg 33 1st leg 34 2nd leg 35 Locking protrusion

Claims (1)

A component mounting structure in which at least a pair of elastic mounting legs provided with locking projections protruding from the component and protruding in the direction away from each other is mounted in mounting holes provided in the mounted portion. And
The pair of mounting legs are inclined in a direction approaching each other toward the distal end of the first leg portion on the proximal end side with respect to the locking projection, and are connected to the distal end side of the first leg portion. Are formed to be inclined in a direction away from each other toward the tip,
The second leg is provided with a locking projection for locking the mounting hole of the mounted portion protruding in a direction away from each other,
The first leg is provided closer to the base end than the locking protrusion,
The lower portion of the mounting leg protrudes downward from the lower surface of the component, and a space corresponding to the plate thickness of the mounted portion is provided between the locking surface of the locking protrusion and the lower surface of the component,
The spacing between each of the locking projections is
At least the distance between the tips of the outer inclined surfaces of the locking projections is smaller than the distance between the locking surfaces facing each other in the mounting hole.
And when the mounting leg is inserted into the mounting hole of the mounted portion, first, an inner surface of the mounting hole is formed on a part of the outer inclined surface of the locking projection provided at the tip of the mounting leg. It is set so that the upper end touches,
When the component is moved to the mounted portion side in a state where the mounting leg is inserted into the mounting hole, the mounting leg descends while being elastically deformed to the inside of the mounting hole. Each of which is deformed in a direction approaching each other, and when the locking projection penetrates the mounting hole, the contact portion between the first leg portion and the second leg portion spreads outward, and the engagement A component mounting structure, wherein a locking surface of a locking projection locks a lower surface of the mounted portion.

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