JP2000220618A - Insertable mounting parts - Google Patents

Abstract

(57) [Summary] [Problem] A fitting-insertion type, which is provided with basic conditions that it can be mounted with one touch and the number of parts can be suppressed to a small number, and is particularly not easily detached even when the above-mentioned load acts. Provide mounting parts. SOLUTION: A connecting portion 1a to be inserted and inserted, and a plurality of projecting ridges integrally projecting from one side of the connecting portion 1a in the same direction, and are inserted into a mating hole by elastic deformation. 1b and a locking portion 1 formed at the front end of the fitting insertion protruding portion 1b so as to be engaged with the inner end of the hole and integrally protruding in the outer diameter direction.
c, and the fitting portion 1 having a tapered tip end 1d that can be inserted into the hole includes a locking portion 1c at an appropriate position from the tip 1d to the fitting projection 1b. Defining means 2 and 3 for integrally regulating elastic deformation of the insertion projection 1b to a predetermined amount or less are integrally formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting portion to be inserted and inserted, and a plurality of ridges integrally projecting from one side of the connecting portion in the same direction, and is inserted into a mating hole by elastic deformation. And a locking portion formed integrally with the front end of the fitting / inserting protrusion in the outer diameter direction so as to engage with the inner end of the hole. The present invention relates to a tapered insertion-type mounting component that can be inserted into a hole.

[0002]

2. Description of the Related Art For example, in an automatic processing apparatus,
As shown in FIG. 9A, the receiving portion 5 having the square hole 50a is provided.
9 is provided in the apparatus, and the component 51 has another specific function such that the tip is inserted into the hole 50a as shown in FIG. 9B. A component (mounting component) 53 may be mounted. This part 5
As shown in FIG. 9A, reference numeral 3 denotes a tapered resin integral molded product, and a connecting portion 53a for performing a fitting operation, and two protruding parallel portions protruding from one end of the connecting portion 53a. And a fitted insertion protrusion 53b.
At the tip of b, a hook-shaped projection is provided at each of upper and lower
3c is formed to protrude.

The component 53 is inserted so as to be inserted into the hole 50a from the tapered portion with the connecting portion 53a. At this time, when the locking portion 53c is inserted into the hole 50a, the fitting projection 53b is inserted. Can be inserted by bending and deforming (elastic deformation) in a constricted manner.
When the fitting 3 c passes through the hole 50 a, the fitting projection 53 b expands, and the locking portion 53 c locks on the other side of the receiving portion 50, so that the component 53 is attached to the component 51 while being prevented from falling off. .

[0004] The component 53 is sometimes referred to as a snap fit. However, since such a component 53 can be mounted with one touch and the number of components can be reduced, FIG.
This is superior to a method in which the component 56 is mounted (fixed) to the component 51 by the mounting screw 55 as shown in FIG.

[0005]

However, the mounting type shown in FIG. 9 is superior to the screw type shown in FIG. 10 in the above points, but has the following problems. That is, FIG. 11 shows an external perspective view of the insertion type mounting part 57 which is another snap fit.
This part 57 is, for example, as shown in FIG.
This is used when attaching the component 59 to the component 58. As shown in FIG. 11, the component 57 is a round shaft having a disc-shaped connecting portion 57a, a split-shaped insertion / projecting portion 57b, and a locking portion 57c. 12
As shown in (a), in a state where the component 59 is applied to the component 58, the tapered portion 57d is inserted into the hole 58a, and the operation is performed so as to be pushed through the connecting portion 57a. As described with reference to FIG. 9, when the locking portion 57c is inserted into the hole 58a, the fitting projection 57b passes while being bent and deformed in a constricted shape as shown in FIG. The locking portion 57c is returned to the hole 58a together with the elastic return of the fitting projection 57b.
Is locked at the inner edge of the part 59, and the attachment of the part 59 is completed at the same time when the part 57 is inserted.

FIG. 13 (a) shows such an insertion type mounting part 57 in a mounted state.
Conventionally, when a load L as shown in the figure is applied to the component 59, the force causes the fitting / inserting portion 57b to tend to narrow as shown in FIG. 13 (b). The portion 57c may enter the hole 58a, and may come off as shown in FIG. 13 (c). Needless to say, as shown in FIG. 14, the fastening may be performed by the mounting screws 61. However, in this case, there arises a problem that the efficiency of assembly cannot be improved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide, under the basic conditions that it can be mounted with one touch and the number of parts can be suppressed to a small number, while the above-described load is applied. An object of the present invention is to provide an insertion-type mounting component that is not easily detached even in a case.

[0008]

In order to achieve the above-mentioned object, an insertion-type mounting component according to the present invention comprises a connecting portion to be inserted and inserted, and a plurality of protrusions extending in one direction from one side of the connecting portion. A projection that is integrally protruded as a ridge and is inserted into the mating hole by elastic deformation, and is integrally protruded in the outer diameter direction at the tip of the insertion projection to be engaged with the inner end of the hole. A fitting portion having a tapered tip end portion that can be inserted into the hole, wherein the engaging portion is provided at an appropriate position from the tip portion to the fitting projection. A defining means for integrally defining the elastic deformation of the fitting projection including the stopper to a predetermined amount or less is formed.

According to this structure, the elastic deformation (constriction-like bending deformation) of the fitting / inserting projection including the locking portion is defined to be a predetermined amount or less at an appropriate position from the tip end to the fitting / inserting projection. The means are integrally formed. Therefore, even if a load is applied that causes the insertion-type mounting part mounted in the hole to come out of the hole, the amount of deformation of the insertion protrusion is suppressed to a predetermined amount or less, and the locking portion falls into the hole. The likelihood of this is reduced. As a result, it was possible to provide an insertion-type mounting component that does not easily come off even when the above-described load acts, while providing the basic condition that the component can be mounted with one touch and the number of components can be reduced. .

In a preferred embodiment of the present invention, the defining means is constituted by a contact portion provided at the distal end. According to this configuration, it is possible to suppress the deformation amount of the fitting / inserting portion or the like to a predetermined amount or less by the function of the contact portion, and also maintain the ease of fitting / inserting. With a simple configuration in which a contact portion is provided at the distal end portion, a fitting-type mounting component that does not easily come off can be provided.

According to another preferred embodiment of the present invention, the defining means is constituted by a deformation resistance portion integrally connecting a plurality of base portions of the fitting projection. According to this configuration, it is difficult to deform this portion by connecting the base portions of the fitting / inserting portions, whereby the elastic deformation (constriction-like bending deformation) of the fitting / inserting portion can be suppressed to a predetermined amount or less, As a result, it is possible to effectively prevent the kinks caused by the load and to prevent the insertion-type mounting component from falling out of the hole.

In still another preferred embodiment of the present invention,
The contact portion may be formed in a meshing relationship. With such a configuration, it is possible to strongly prevent the contact of the contact portion with the contact portion against the kinks caused by the load, and to more effectively prevent the insertion-type mounting component from coming off. it can.

[0013] In still another preferred embodiment of the present invention,
The defining means is configured by integrally connecting the tapered portions. As a result, the joint portion strongly resists kinking caused by the load, and it is possible to more effectively prevent the insertion-type mounting component from coming off.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a fitting part according to the present invention. <First Embodiment> Figs. 1 to 3 show a first embodiment of the present invention. Fig. 1 is an external perspective view showing an insertion type mounting part 1, and Fig. 2 is an insertion type mounting part 1. 3 (a) and 3 (b) are cross-sectional views showing a state in which the insertable mounting part 1 is mounted for fastening and a state in which the mounting part 1 resists a load P.

First, the insertable mounting part 1 is shown in FIGS.
As shown in FIG. 1, a disc-shaped connecting part 1a and the connecting part 1
a protruding portion 1b, which protrudes perpendicularly in the same direction from one side surface, and a locking portion 1c provided on the tip side of the fitting and protruding portion 1b. Is the tapered portion 1d
Respectively. The fitting projection 1b is basically a round shaft and has a crack at the center of the round shaft. The fitting projection 1b is formed integrally with the connecting portion 1a so that a plurality of projections form a split shape.

The fitting portion 1 has a contact portion 2 integrally formed on one inner surface of the tapered portion 1d and functioning as a defining means. As compared with the prior art, the contact portion 2 and the other inner surface of the tapered portion 1d come into contact at an earlier stage. The other of the defining means is to provide a deformation resistance portion 3 for integrally connecting a plurality of base portions of the fitting / inserting projection 1b. The effect of the present invention can be exerted even if only one of the contact portion 2 and the deformation resistance portion 3 functioning as these defining means is provided.

As shown in FIG. 3 (a), the fitting part 1 has a locking portion 1c and a fitting projection 1b in a hole 4a of the component 4.
And the locking portion 1c is locked at the inner end of the hole 4a, so that the locking portion 1c is locked. In this insertion, if the tapered portion 1d is inserted into the hole 4a, the contact portion 2 comes into contact with the tapered portion 1d on the mating side. The portion 1b can pass through the inside of the hole 4a by bending and deforming. The component 5 is fastened by this insertion. Note that the amount of protrusion of the contact portion 2 in this embodiment is:
The distance between the fitting projections 1b is about half of the distance between the fitting projections 1b, but the invention is not limited to this.

When a load P is applied to one end of the component 5, the fitting-in type mounting component 1 causes a twisting phenomenon as shown in FIG. 3B, but the deformation resistance portion 3 keeps the constricted bending deformation constant. And the contact portion 2 at the tip hits the tapered portion 1d on the other side to suppress the constricted bending deformation to a predetermined amount or less. It can withstand the load P. By the way, the load at the time of detachment in the case shown in FIG. 13 (c) was about 1 kg, but the load shown in FIG. 3 (b) can withstand a load of about 6 kg.

<Second Embodiment> FIG. 4 shows the configuration of the second embodiment. In this embodiment, the contact portion 10 is formed separately on both the tapered portion 1d, and a gap c is left in a natural state between the pair of contact portions 10, 10.

<Third Embodiment> FIG. 5 shows a third embodiment in which the contact portions 12 are provided on both the tapered portions 1d.
It hits even in the natural state (the gap is 0).
Note that the contact portions 10, 1 in the embodiment of FIGS.
2 will be described later, but may be configured to mesh with each other in the axial direction as shown in FIG. 6 or FIG.

<Fourth Embodiment> FIG. 6 shows a fourth embodiment in which the contact portion 14 is formed as a convex portion 14a on one of the tapered portions 1d, while the other tapered portion 1d is formed.
Is formed as a concave portion 14b, and the convex portion 14a and the concave portion 14b are configured to engage with each other when a load is applied. In particular, according to this embodiment, when the convex portion 14a fits into the concave portion 14b due to the load, the projection 14a functions to prevent axial displacement between the insertion protrusions 1b.
This greatly resists the kinking action during loading. In other words, this suppresses the bending of the fitting / inserting portion 1b at the time of twisting as much as possible, and prevents the detachment more effectively. On the other hand, during normal insertion without kinking, the projection 14
a and the concave portion 14b are not displaced in the axial direction, and the convex portion 14a slides and rotates within the concave portion 14b. To facilitate. The convex portion 14a and the concave portion 14b may be provided at another portion such as the tapered portion 1d or the other portion such as the fitting projection 1b.

<Fifth Embodiment> FIG. 7 shows a fifth embodiment, in which a contact portion 16 has a convex portion 16a formed as a mountain on one of the tapered portions 1d and a concave portion formed as a V on the other. 16b, in particular, one of them is convex while the other is concave.
In the case of this embodiment as well, at the time of regular insertion, the insertion is facilitated, while the resistance to the distortion due to the load is greatly prevented, and the detachment is effectively prevented. Convex part 16a and concave part 16b
May be provided at another location such as the tapered portion 1d or the fitting / inserting projection 1b.

<Sixth Embodiment> FIG. 8 shows a sixth embodiment, in which the defining means is such that the tapered portion 1d is integrally connected by a connecting portion 18. In the case of this embodiment as well, at the time of regular insertion, the insertion is facilitated, while the resistance to the distortion due to the load is greatly prevented, and the detachment is effectively prevented.

In the embodiments shown in FIGS. 4 to 8, the deformation resistance portion 3 is formed in all of the embodiments, but a configuration without the deformation resistance portion 3 may be adopted.

The insertable mounting component 10 according to the present invention is preferably formed of resin. When used for mounting parts of a photographic processing apparatus, it is preferably formed of a resin having chemical resistance.

<Another embodiment> In the above embodiment,
Although the insertable mounting part 10 was used for fastening, FIG.
Of course, the present invention is also applied to a case where only the insertion-type mounting component itself is mounted, not for fastening other components, as in the mounting type shown in FIG. Further, in the above-described embodiment, the counterpart hole includes a hole having a shape other than a round hole and a square hole, and of course, the inner surface is not a continuous surface like a round hole, for example, one or both sides are open. Also included here are those having a groove shape and other configurations. Further, the locking portion includes a plurality of locking portions and a recessed portion. Although the number of the fitting projections is two, the number of fitting projections may be three or more. Further, the connecting portion is not limited to the disk shape, but may have a square cross section or another geometric shape.

[Brief description of the drawings]

FIG. 1 is a perspective view of an insertion type mounting part showing a first embodiment of the present invention.

FIG. 2 is a side view of the insertable mounting part of FIG. 1 as viewed from the side.

3A is a cross-sectional view showing a state in which the insertable mounting part of FIG. 1 is mounted for fastening other parts, and FIG. 3B is a view showing a state of resisting when a load acts in the mounted state. Sectional view

FIG. 4 is a side view showing a second embodiment of the insertion type mounting part.

FIG. 5 is a side view showing a third embodiment of the insertion type mounting part.

FIG. 6 is a side view showing a fourth embodiment of the insertion type mounting part.

FIG. 7 is a side view showing a fifth embodiment of the insertion type mounting part.

FIG. 8 is a side view showing a sixth embodiment of the insertion type mounting part.

FIG. 9A is an exploded perspective view showing components in the case of a conventional insertion type mounting part, and FIG. 9B is a perspective view showing a state of the mounting state.

FIG. 10A is an exploded perspective view showing a component part to be fastened with a screw, and FIG. 10B is a perspective view showing the mounted state.

FIG. 11 is a perspective view showing a fitting part of a conventional snap-fit type.

12A and 12B show a state in which another part is fastened using a conventional insertion-type mounting part, and FIG. 12A is a cross-sectional view showing a state before mounting.
(B) is a cross-sectional view showing a state in the middle of insertion, and (c) is a cross-sectional view showing a state when the mounting is completed.

13A and 13B show a state when a load is generated when a conventional insertion-type mounting component is used, where FIG. 13A is a cross-sectional view showing a state at the beginning of a load operation, and FIG. FIG. 3C is a cross-sectional view illustrating a state in which the mounting component starts to be removed, and FIG.

FIG. 14 is a cross-sectional view showing a conventional example using screws for fastening parts.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 insertion-type mounting component 1 a connecting portion 1 b insertion projection 1 c locking portion 1 d tapered portion 2, 10, 12, 14, 16, 18 contact portion 3 deformation resistance portion 4 component 18 connecting portion

Claims (5)

[Claims] A connecting portion to be inserted and inserted; and a fitting and projecting portion integrally projecting from one side of the connecting portion in the same direction as a plurality of ridges and elastically deforming into a mating hole. A locking portion formed at the front end of the fitting insertion protruding portion so as to be engaged with a rear end of the hole, and integrally formed so as to protrude outward in an outer diameter direction, and a tip portion can be inserted into the hole. In an insertion-type mounting part formed in a tapered shape, at an appropriate position from the distal end to the insertion projection, a defining means for defining elastic deformation of the insertion projection including the locking portion to a predetermined amount or less. Are formed integrally with each other. 2. The fitting device according to claim 1, wherein the defining means is constituted by a contact portion provided at the distal end portion. 3. The insertion type according to claim 1, wherein the defining means is constituted by a deformation resistance portion that integrally connects a plurality of bases of the insertion projection. Mounting parts. 4. The fitting device according to claim 1, wherein the contact portions are formed in a meshing relationship. 5. The device according to claim 1, wherein said defining means is formed by integrally connecting said tapered portions.
4. The insertion-type mounting component according to any one of 3.