JPH1056275A - Housing fastener for electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fasten both housings easily and to use the housing repeatedly without causing damages thereon by coupling one and the other housings having inner containing section using an energizing member and a fastening pin having a protrusion at the forward end thereof. SOLUTION: Upper and lower housings 1, 2 have wall parts 16, 28 which are engaged each other to define an inner space 4 for containing an electronic device, and fixed wall parts 11, 21 to be jointed each other. In this regard, through holes 12, 22 communicate with each other and grooves 13, 23 of each through hole communicate with each other. A fastener 3 is then inserted into the through holes 12, 22 while locating the protrusion 33 thereof at the communicating grooves 13, 23 and a fastening pin 31 is turned when the protrusion 33 projects to the rear side of the fixed wall part 11. Consequently, the protrusion 33 is engaged with a groove 38 on the rear side of the fixed wall part 21 by the resilient resetting force of a coil spring 35. The fixed wall parts 11, 21 are pressed each other and secured by the resilient resetting force of the coil spring 35 and thereby the upper and lower housings 1, 2 are fastened by means of the fastener 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an electronic device,
The present invention relates to a casing fastening device in which various electronic components are stored.

[0002]

2. Description of the Related Art FIGS. 7 and 8 show a conventional fastening device for a housing in a small electronic device. Referring to FIGS. 7A and 7B, A in FIG. 7 indicates a housing of an electronic device. The housing includes an upper housing 1 (one housing) and a lower housing 2 (the other housing). When these are overlapped and joined, an electronic component storage portion 4 is formed therein.

The lower housing 2 has a rectangular bottom wall 24, both side walls 25, 25, a front wall 26, a rear wall 27, and a first wall provided on the inner side of the rear wall 27. It is configured to include two fixed wall portions 21 (the other fixed wall portion). Front wall 26
Is formed to have a higher height than both side walls 25, 25, and an engagement wall 28 (engaging portion) is formed at the upper end and both sides. The rear wall 27 has a recess 29
Is formed in the second fixed wall portion 21.
9, a second through hole 22 penetrating in the thickness direction of the second fixed wall portion 21 is formed.

The upper housing 1 includes an upper wall 14 and both side walls 1.
5, 15, an engaging wall portion 16 (engaging portion) provided at a front end portion of the upper wall portion 14, and a first portion provided at a rear end of the upper wall portion 14.
(Fixed wall portion 11) (one fixed wall portion). At the center of the lower end of the first fixed wall portion 11, a convex portion 17 that fits into the concave portion 29 of the rear wall portion 27 is formed, and the convex portion 17 has a first through hole in its thickness direction. 1
2 are formed. The first through hole 12 has a large diameter portion 18 on the surface side of the first fixed wall portion 11 and a small diameter portion 18 on the inner surface side.
b.

[0005] In this case, the upper case 1 is superimposed on the lower case 2 in a state where electronic components are housed inside each case, and these are joined. At this time, the convex portion 17 of the upper housing 1 is
Is fitted in the concave portion 29 of the lower housing 2 and the first
And the second through-hole 22 of the lower housing 2 communicate with each other. Then, a tapping screw 19 is screwed into the first and second through-holes 12 and 22 so that the first fixed wall portion 1 is formed.
The first and second fixed wall portions 21 are fastened.

Another conventional fastening device is shown in FIG.
There are the following. 7 is different from that shown in FIG. 7 in that the female screw member 30 is press-fitted into a second through hole 22 provided in the second fixed wall portion 21,
By inserting a machine screw 19a into the first through hole 12 of the first fixed wall 11 and screwing it into the female screw member 30 of the second fixed wall 21, the first fixed wall 1
The first and second fixed wall portions 21 are fastened to each other.

[0007]

However, the above-described conventional device for fastening a housing of an electronic device has the following problems.

In the case shown in FIG. 7, since the tapping screw directly forms an internal thread on the housing, each time the tapping screw is screwed,
Since the housing is destroyed, a complete female screw cannot be formed at the second and subsequent screwing. That is, repeated fastening is impossible.

Further, in the apparatus shown in FIG. 8, a female screw member is required for the housing, and the female screw member is press-fitted into the housing by heat or the like. Cracks may occur in the housing.

[0010] The present invention has been made in view of the above-described points, and has one housing and the other housing of an electronic device.
An object of the present invention is to provide a housing fastening device of an electronic device that can be easily fastened and repeatedly fastened without damaging the housing.

[0011]

In order to achieve the above object, the present invention employs the following constitution. The housing fastening device for an electronic device according to claim 1, wherein one housing and the other housing are joined to each other to form an electronic component storage portion therein,
An electronic device housing fastening device for fastening the joined housings with fasteners, wherein each of the housings includes one fixed wall portion overlapping each other when the housings are joined,
The other fixed wall portion is formed, and each of these fixed wall portions has
When these are overlapped, first and second through-holes that are continuous with each other in the thickness direction are formed, and a groove is formed on the inner surface of the first and second through-holes in the thickness direction. The fastening tool includes a fastening pin inserted into the through hole, and a biasing member attached to the fastening pin, wherein the fastening pin is provided from the one fixed wall portion side to the other fixed wall portion. A shaft portion that can be inserted into the through hole, a head portion provided at a base end portion of the shaft portion, and a shaft portion provided at a distal end portion of the shaft portion. A projection that is positioned in the groove when inserted into the groove and protrudes toward the front surface of the other fixed wall portion, and that rotates the shaft to engage with the engagement portion on the front surface. The urging member,
The one fixed wall portion and the other fixed wall portion are interposed between the one fixed wall portion and the head so as to urge the fixed wall portion in a direction in which they are pressed against each other. .

Therefore, in the housing fastening device for an electronic device according to the present invention, when the one housing and the other housing are joined, one fixed wall portion and the other fixed wall portion overlapping each other are formed. Is done. When the fixed wall portions overlap each other, first and second through-holes that are continuous with each other in the thickness direction are formed, and projections of fastening pins of the fastener are formed on inner surfaces of the first and second through-holes. Is inserted into the first and second through-holes while being positioned in the groove.

When the projection protrudes toward the surface of the other fixed wall, the shaft of the fastening pin is rotated to engage the engaging portion on the surface. An urging member provided in the fastener urges the one fixed wall and the other fixed wall in a direction in which they are pressed against each other. As a result, one fixed wall portion and the other fixed wall portion are fixed, and both housings are fastened.

According to a second aspect of the present invention, there is provided the electronic device casing fastening device according to the first aspect.
The urging member is a coil spring wound around a shaft of the fastening pin.

Therefore, in the device for fastening a casing of an electronic device according to the present invention, the one fixed wall portion and the other fixed wall portion are urged in a direction in which they are pressed against each other by the elastic return force of the compressed coil spring. it can. As a result, one fixed wall portion and the other fixed wall portion are fixed, and both housings are fastened.

According to a third aspect of the present invention, there is provided the electronic device casing fastening device according to the first aspect.
The biasing member is a bellows-shaped cylindrical body made of a synthetic resin mounted on a shaft portion of the fastener.

Therefore, in the housing fastening device for an electronic device according to the present invention, one fixed wall portion and the other fixed wall portion are formed by the elastic restoring force of the bellows-shaped cylindrical body made of synthetic resin. Can be urged in a direction of pressing against each other. As a result, one fixed wall portion and the other fixed wall portion are fixed, and both housings are fastened.

According to a fourth aspect of the present invention, there is provided the electronic device casing fastening device according to the second or third aspect, wherein the through-hole provided in the one fixed wall portion has a surface side. A large-diameter portion from which the head can be inserted, a medium-diameter portion from which the head cannot be inserted, and from which the urging member can be inserted, and from which the urging member cannot be inserted, and It comprises a small diameter portion into which the shaft portion can be inserted, and the engagement portion is a groove formed on the surface of the other fixed wall portion.

Therefore, in the electronic device casing fastening device of the present invention, the projection at the tip of the shaft provided on the fastener is engaged with the other fixed wall. In addition, the shaft portion of the fastener and the protrusion provided on the tip portion thereof can be inserted into the small-diameter portion of the through hole provided in one of the fixed walls, and the urging member cannot be inserted. Then, in the middle diameter portion of the through hole, the urging member can be inserted, and the head of the fastening pin cannot be inserted. Thereby, one fixed wall portion,
The other fixed wall can be urged in a direction in which they are pressed against each other, so that one fixed wall and the other fixed wall are fixed, and both housings are fastened.

According to a fifth aspect of the present invention, there is provided a housing fastening device for an electronic device according to any one of the first to fourth aspects, wherein the one housing and the other housing are different from each other. One of these housings has an engagement portion at one end, and the other end side is provided with one fixed wall portion fixed by the fastener and the other fixed wall portion. Features.

Therefore, in the housing fastening device for electronic equipment of the present invention, one end of one housing is engaged with one end of the other housing, and the other end is fixed by the fastener. Since one fixed wall portion and the other fixed wall portion are provided, the two housings are fastened.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. In the embodiment described here, the schematic configuration of the housing shown in FIGS. 3 and 4 is almost the same as that shown in FIGS. The same reference numerals are given, and only different points from those shown in FIGS. 7 and 8 will be described here.

In FIG. 1, reference numeral 1 denotes an upper housing (one housing), reference numeral 2 denotes a lower housing (the other housing), and reference numeral 3 denotes a fastener. The first fixed wall 11 (one fixed wall) of the upper housing 1 has a first through hole 12 penetrating in the thickness direction thereof, and a groove formed in the inner surface of the through hole 12 in the thickness direction. 13 are formed.

The second fixed wall portion 21 (the other fixed wall portion) of the lower housing 2 has a second through hole 22 penetrating in the thickness direction thereof, and an inner surface of the through hole 22 in the thickness direction. And a groove 3 formed on the surface of the second fixed wall portion 21.
8 (engaging portion).

As shown in FIG. 5, the fastener 3 comprises a fastening pin 31 and a coil spring 35 (biasing member) wound and mounted on the fastening pin 31. 32, and provided at the distal end of the shaft portion 32, as shown in FIG.
A projection 33 which can be engaged with the groove 38 of the fixed wall portion 21 and a head portion 34 provided at the base end portion of the shaft portion 32.

The first through hole 12 is formed in the first fixed wall 11
Large-diameter portion 18, medium-diameter portion 18a, and small-diameter portion 18b
In the large diameter portion 18, the head 34 of the fastening pin 31 can be inserted from the front side, and in the middle diameter portion 18a, the head 34 of the fastening pin 31 cannot be inserted, and the coil spring 35 is inserted. The small diameter portion 18b is configured such that the coil spring 35 cannot be inserted and the shaft portion 32 of the fastening pin 31 can be inserted. A step 36 is formed between the large diameter portion 18 and the middle diameter portion 18a, and the middle diameter portion 18a and the small diameter portion 18b are formed.
A step 37 is formed between the steps.

The procedure for fastening the upper housing 1 and the lower housing 2 will be described below. The upper housing 1 and the lower housing 2 respectively engage the engaging wall 16 (engaging portion) of the upper housing 1 and the engaging wall 28 (engaging portion) of the lower housing 2. And the lower housing 2 with the electronic component housing 4 formed therein.
The upper housing 1 is overlapped and joined.

At this time, the first through hole 12 of the upper housing 1
And the through hole 22 of the lower housing 2 communicate with each other.
The second groove 13 communicates with the groove 23 of the through hole 22. Then, the fastener 3 is directed from the surface side of the first fixed wall portion 11 to the second fixed wall portion 21, and the through holes communicating with the protrusions 33 of the fastener 3 are located in the grooves 13 and 23 communicating with each other. 12,
When the projection 33 projects toward the surface of the second fixed wall 21, the fastening pin 31 is rotated.

At this time, since the coil spring 35 is in a compressed state, when the insertion force is released, the coil spring 35 is released.
Of the second fixed wall portion 21 due to the elastic return force of
In the groove 38 on the surface side of This coil spring 35
Since one end is pressed against the head 34 and the other end is pressed against the step 37 of the first fixed wall 11, the first fixed wall 11 and the second fixed wall are 21 are pressed and fixed to each other. Thus, the upper housing 1 and the lower housing 2
Fastened by the fastener 3.

When releasing the fastening, the fastening pin 31 is used.
, The protrusion 33 is projected to the surface side of the second fixed wall portion 21, the fastening pin 31 is rotated, and the protrusion 33 is positioned in the grooves 13 and 23 communicating with the protrusion 33. Then, when the pushing force is released, the fastener 3 is returned by the elastic return force of the coil spring 35.
Can be taken out from the through holes 12 and 22 communicating with each other. Thus, the upper housing 1 and the lower housing 2 are released from fastening.

According to the housing fastening device for an electronic device of the present embodiment, the upper housing 1 and the lower housing 1 are easily operated by inserting and rotating the fastener 3 into the upper housing 1 and the lower housing 2. Side housing 2
Can be concluded. Further, since the engaging portion of the second fixed wall portion 21 is formed as a groove, the operation of engaging the projection 33 of the fastener 3 is easy. Since the fastener 3 only engages with and presses against each of the housings 1 and 2, it can be repeatedly tightened without damaging each of the housings 1 and 2.

FIG. 6 is a view showing a second embodiment of the housing fastening device for electronic equipment according to the present invention. In this figure,
The same components as those of the first embodiment shown in FIGS. 1 to 5 are denoted by the same reference numerals, and description thereof will be omitted. The difference between the second embodiment and the first embodiment is that the urging member 35 of the fastener 3 is a bellows-like cylindrical body 35a made of synthetic resin.

[0033]
Also in this embodiment, the same operation and effect can be obtained by using the same manner as in the above embodiment.

In each of the above embodiments, the engaging portion is provided at one end of each housing, and the fixed wall portion fixed by the fastener is provided at the other end. However, the present invention is limited to this configuration. Instead, for example, a configuration may be adopted in which one end is a hinge and the other end is a fixed wall portion, and only one of these is fixed by a fastener, and each housing is fastened.

[0035]

As described above, according to the housing fastening device for electronic equipment according to the first aspect, each of the housings has one fixed wall portion which overlaps with each other when these housings are joined. And the other fixed wall portion are formed, and in each of these fixed wall portions, first and second through-holes which are continuous with each other in the thickness direction when they are overlapped are formed.
A groove is formed on the inner surface of the second through-hole in the thickness direction, and the fastener includes a fastening pin inserted into the through-hole, and an urging member attached to the fastening pin. Wherein the fastening pin is provided at a base end portion of the shaft portion that can be inserted into the through hole from the one fixed wall portion side to the other fixed wall portion side. When the head is provided at the tip of the shaft, the shaft is located in the groove when the shaft is inserted into the through hole, and when protruding toward the surface of the other fixed wall, A projection configured to rotate a shaft portion and engage with the engaging portion on the front surface side, wherein the biasing member presses the one fixed wall portion and the other fixed wall portion against each other. And the head is interposed between the one fixed wall and the head.

With this, the upper housing and the lower housing can be fastened by a simple operation of inserting and rotating the fastener into the upper housing and the lower housing, so that the workability is greatly improved.
In addition, since the fastener only engages and presses against each housing, it can be repeatedly tightened without damaging each housing.

According to the second aspect of the present invention, the biasing member is wound around the shaft of the fastening pin. The configuration is a coil spring.

Thus, the upper casing and the lower casing can be fastened by a simple operation of inserting and rotating the fastener into the upper casing and the lower casing, so that the workability is greatly improved.
In addition, since the coil spring only presses against each housing, it can be repeatedly fastened without damaging each housing.

According to a third aspect of the present invention, the biasing member is attached to a shaft of the fastener. It is configured as a cylindrical body formed in a bellows shape made of resin.

Thus, the upper housing and the lower housing can be fastened to each other by a simple operation of inserting and rotating the fastener into the upper housing and the lower housing, thereby greatly improving workability.
The bellows-shaped tubular body made of synthetic resin is
Since only the housings are pressed against each other, the housings can be repeatedly tightened without damaging the housings.

According to the fourth aspect of the present invention, in the second aspect of the present invention, the through-hole provided in the one fixed wall portion may be provided with a through hole. A large-diameter portion into which the head can be inserted from the front side, a medium-diameter portion into which the head cannot be inserted, and into which the urging member can be inserted, and an insertion into which the urging member cannot be inserted. And the small-diameter portion into which the shaft portion can be inserted, and the engaging portion is a groove formed on the surface of the other fixed wall portion.

Thus, the upper housing and the lower housing can be fastened to each other by a simple operation of inserting and rotating a fastener between the upper housing and the lower housing. The joint is
Since the groove is formed, the operation of engaging the projection of the fastener is easy, and the workability is dramatically improved. In addition, since the fastener only engages and presses against each housing, it can be repeatedly tightened without damaging each housing.

According to a fifth aspect of the present invention, there is provided the electronic device housing fastening device according to any one of the first to fourth aspects, wherein the one housing and the other housing are provided. Means that one end of each of these housings has an engagement portion with each other, and the other end side is provided with one fixed wall portion fixed by the fastener and the other fixed wall portion It has a configuration.

Thus, the upper casing and the lower casing can be easily fastened by using the fastener.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is a cross-sectional view in which one housing of an electronic device and the other housing are fastened by fasteners.

FIG. 2 is a cross-sectional view of a main part of the housing fastening device of the electronic device of FIG. 1;

FIG. 3 is a perspective view of one housing of the electronic device of the present invention.

FIG. 4 is a perspective view of the other housing of the electronic device of the present invention.

FIG. 5 is a perspective view of a fastener of the housing fastening device of the electronic apparatus shown as the first embodiment of the present invention.

FIG. 6 is a perspective view of a fastener of the housing fastening device for an electronic device shown as the second embodiment of the present invention.

FIG. 7 is a perspective view of a housing fastening device of an electronic device using a conventional tapping screw.

FIG. 8 is a perspective view of a housing fastening device of an electronic device using a conventional machine screw.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper case (one case) 2 Lower case (the other case) 3 Fastener 4 Electronic component storage part 11 First fixed wall part (one fixed wall part) 12 First through hole 13 , 23 Groove 16, 28 Engagement wall (engagement part) 18 Large diameter part 18a Medium diameter part 18b Small diameter part 21 Second fixed wall part (the other fixed wall part) 22 Second through hole 31 Fastening pin 32 Shaft 33 Projection 34 Head 35 Coil spring (biasing member) 35a Cylindrical body 38 Groove (engaging portion)

Claims (5)

[Claims] At least one housing is joined to the other housing,
An electronic device housing fastening device in which an electronic component storage portion is formed and the joined housings are fastened by fasteners, wherein the housings are connected to each other when the housings are joined. One fixed wall portion and the other fixed wall portion that overlap each other are formed, and the first and second through holes that are continuous with each other in the thickness direction when they overlap each other are formed in each of the fixed wall portions, A groove is formed on the inner surface of each of the first and second through holes in the thickness direction. The fastener includes a fastening pin inserted into the through hole,
An urging member attached to the fastening pin, wherein the fastening pin is provided in the first and second through holes from the one fixed wall portion side to the other fixed wall portion side. An insertable shaft, a head provided at a base end of the shaft, and a shaft provided at a distal end of the shaft when the shaft is inserted into the first and second through holes. A projection that is located in the groove and that is rotatable with the engaging part on the front side by rotating the shaft part when protruding toward the front side of the other fixed wall part; The urging member is interposed between the one fixed wall portion and the head so as to urge the one fixed wall portion and the other fixed wall portion in a direction of pressing against each other. A housing fastening device for an electronic device, comprising: 2. The housing for an electronic device according to claim 1, wherein said biasing member is a coil spring wound around a shaft portion of said fastening pin. Fastening device. 3. The housing fastening device for an electronic device according to claim 1, wherein the biasing member is a synthetic resin bellows-shaped cylindrical body mounted on a shaft portion of the fastener. A housing fastening device for an electronic device, comprising: 4. The casing fastening device for an electronic device according to claim 2, wherein the first through hole provided in the one fixed wall portion has a large size through which the head can be inserted from the front surface side. A diameter portion; a middle diameter portion in which the head cannot be inserted and the urging member can be inserted; and a small diameter in which the urging member cannot be inserted and the shaft portion can be inserted. Wherein the engaging portion is a groove formed on a surface of the other fixed wall portion. 5. The housing fastening device for an electronic device according to claim 1, wherein the one housing and the other housing are engaged with each other at one end of each of the housings. A housing fastening device for an electronic device, comprising: a fixed wall portion fixed to the other end side by the fastener and the other fixed wall portion.