JPH11330713A - Small case for containing electronic part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a case from being simply opened by a shock and the like, and to make the opening simpler when tried to open. SOLUTION: At one of spigot fitting parts 9 with an upper case 4 and a lower case 5, which can undergo spigot fitting, a plurality of locking pawl parts 11 are formed. At the same time, locking grooves which can lock the respective locking pawls 11 are formed at the other part. At the same time, at the position between any of two neighboring locking parts 11 and the locking groove, a plate inserting recess 15 for inserting a plate of the plate shaped material is formed. In this small case for accommodating electronic components, a section of the part close to the recess 15 of at least one of two locking pawls 25 and 26 neighboring the recess 15 is cut out (29a and 29b). Thus, general parts 27 and 28 of the locking pawls 26 and 27 become short in comparison with the other locking pawl 11 located at the other position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small case for storing electronic parts.

[0002]

2. Description of the Related Art In recent years, some automobiles and the like are equipped with a keyless entry system capable of remotely opening and closing a door without using a key. In the keyless entry system, the door is opened and closed using a small transmitter.

[0003] In these keyless entry system transmitters, electronic components such as an electronic board and a button battery are housed in a small resin case large enough to fit in a pocket.

[0004] The small case generally has a structure that can be opened and closed so that the battery can be replaced. At this time, there is a structure in which the screw is removed and opened, but in order to make it inexpensive and easy to manufacture, it is more advantageous to be able to open without removing the screw.

For this purpose, a small case 1 for storing electronic parts as shown in FIGS. 5 to 9 is used. That is, the cover plate 2 and the peripheral wall 3 rising from the edge of the cover plate 2 as shown in FIG.
And a lower case 7 having a bottom plate 5 and a peripheral wall 6 rising from an edge of the bottom plate 5 as shown in FIG.

[0006] A spigot fitting portion 9, 1 capable of spigot fitting the upper case 4 and the lower case 7 to the peripheral walls 3, 6.
0 (the spigot fitting portion 9 of the upper case 4 is convex and the spigot fitting portion 10 of the lower case 7 is concave, but may be reversed).

Further, on the outer peripheral surface of the spigot fitting portion 9,
A plurality of locking claw portions 11 extending in the circumferential direction are formed at intervals, and locking claw portions are provided on the inner peripheral surface of the spigot fitting portion 10 at positions other than the respective locking claw portions 11. A plurality of locking grooves 12 for locking the portions 11 are respectively formed. The locking claw 11 extends at a right angle from the outer peripheral surface of the spigot fitting portion 9, and the locking claw 11 is formed on the side facing the step 8 formed along the entire outer peripheral surface. A vertical surface 13 is formed parallel to the step portion 8, and an inclined surface 14 is formed on the opposite side to facilitate the fitting into the locking groove 12.

Then, a part of a plate-like material 22 such as a coin is inserted into a position between at least two locking claws 11 and locking grooves 12 in at least one of the upper case 4 and the lower case 7. A recess 15 for inserting the plate is formed.

More specifically, in the case of FIGS. 5 to 9, the electronic component storage small case 1 has a substantially oval shape as a whole, and the upper case 4 has a key holder at the upper part in the drawings. A loop 17 is formed which forms a hole 16 for performing a function. Further, the step 8 of the upper case 4 is discontinuous at both roots of the loop-shaped part 17 (discontinuous part 18), and the step 8a located between the two discontinuous parts 18 is The width is wider than the other steps 8.
On the contrary, a portion corresponding to the hole 16 of the lower case 7 is a circular arc-shaped notch 19. And the peripheral wall 6 of the lower case 7
The discontinuous portion is formed at a position corresponding to the root portion of the loop-shaped portion 17 (discontinuous portion 20), and the peripheral wall 6a located between the two discontinuous portions 20 is the other peripheral wall 6 portion. It is wider than.

[0010] The upper case 4 is formed with a total of six locking claws 11, one at the front and back and two at the left and right in plan view. Corresponding to this, the lower case 7 is also placed one position before and after
Further, a total of six locking grooves 12 are formed, two on each side. Further, a recess 15 for inserting a plate into which a part of a plate-like material 22 such as a coin is inserted is formed in the vicinity of one root of the loop-like portion 17 of the upper case 4. In the drawing, reference numeral 21 denotes a circumferential battery retaining wall slightly larger than the outer shape of the battery formed in the lower case 7.

According to such a configuration, as shown in FIG.
The spigot fitting portion 9 formed on the peripheral wall 3 of the upper case 4 was fitted into the spigot fitting portion 10 formed on the peripheral wall 6 of the lower case 7 to form the spigot fitting portion 9 of the upper case 4. By locking the locking claw 11 into the locking groove 12 formed in the spigot fitting portion 10 of the lower case 7, the upper case 4 and the lower case 7 are locked, and the electronic component storage small case 1 is locked. Becomes

On the other hand, as shown in FIG. 9, a part of a plate-like material 22 such as a coin is inserted into a plate insertion recess 15 formed at one root of the loop-like portion 17 of the upper case 4. hand,
When the plate-like material 22 is twisted, as shown in FIG. 10, the locking claw 11 located at a position adjacent to the plate insertion recess 15 is disengaged from the locking groove 12, and the upper case 4 and the lower case 7 A small gap e is formed between the upper case 4 and the lower case 7 by inserting both thumb nails into the gap e and prying them apart.

In this state, the battery is replaced or the like, and the upper case 4 and the lower case 7 are fitted again as shown in FIG. 8, and the locking claws 11 are locked in the locking grooves 12. ,
The electronic component storage small case 1 is assembled.

[0014]

However, such a conventional small case for storing electronic parts has the following problems.

That is, since the electronic component storage small case 1 is mostly opened only in a special case such as battery replacement, the electronic component storage small case 1 is easily opened during daily use. They tend to be made so that they do not get lost.

For this purpose, the number of locking pawls 11 is set to six in total, one at the front and back and two at the left and right in plan view, thereby reducing manufacturing easiness and cost reduction. The locking claw 11 is extended relatively long in the circumferential direction of the electronic component storage small case 1 so as to obtain a strong engagement force while optimizing the surface and the like.

However, when the electronic component housing small case 1 has such a structure, the locking claws 11 are fitted in order from one corner to the other corner even if the small case 1 is opened. , The plate 22 such as a coin must be twisted with a large force in order to release the engagement between the one corner and the locking groove 12. Further, there has been a problem that the gap e formed by twisting the plate-like material 22 such as a coin is too narrow, so that both thumb claws do not enter the gap e well and cannot be easily opened.

Accordingly, an object of the present invention is to solve the above-mentioned problems and to prevent the electronic component from being easily opened by an impact or the like, and to be easily opened when the electronic component is to be opened. Is to provide a case.

[0019]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, a plurality of locks are provided on one of the spigot fitting portions of the upper case and the lower case capable of fitting the spigot. Locking claw portion and the other locking claw portion capable of locking each locking claw portion, and at any position between any two adjacent locking claw portions and locking groove portions. In the electronic component storage small case formed with a recess for inserting a plate for inserting a part of a plate-like object, at least one of two locking claws adjacent to the recess for inserting a plate, By partially notching the portion near the plate insertion concave portion, the general portion of the locking claw portion is made shorter than another locking claw portion at another position. I have.

According to the first aspect of the present invention, the locking claw portion adjacent to the plate insertion concave portion has the following structure.
By notching the portion near the plate insertion concave portion so that the general portion of the locking claw portion is shorter than another locking claw portion at another position, the plate The case can be opened by the operation of twisting the plate-like object inserted into the insertion recess.

That is, when the plate-like object inserted into the plate insertion concave portion is twisted, a substantially central portion of the plate insertion concave portion becomes a lever's power point, and the locking claw portion adjacent to the plate insertion concave portion is turned. The end on the side of the recess for plate insertion temporarily serves as a fulcrum and action point of the lever, but the notch near the recess for plate insertion in the locking claw adjacent to the recess for plate insertion is cut off. As a result, the arm of the lever between the force point and the fulcrum / working point becomes longer than before, so that the engagement between the locking claw and the locking groove can be released with a correspondingly small twisting force. become.

At this time, since only the locking claw portion adjacent to the plate insertion concave portion is shortened, it is possible to prevent the locking force of the entire electronic component storage small case from unnecessarily weakening. Since the engagement between the locking claw and the locking groove can be released with a small twisting force, an effect is obtained in that the plate-shaped object is less likely to damage the periphery of the plate insertion concave portion.

Further, in the invention described in claim 2, the notch of the locking claw portion is a tapered portion whose projection amount gradually decreases as approaching the plate insertion concave portion. And

According to the second aspect of the present invention, the notch portion of the locking claw portion is formed into a tapered portion whose projection amount decreases as approaching the plate insertion concave portion, so that the insertion portion can be inserted into the tapered portion. The engaging force with the concave portion becomes smaller, and it becomes possible to increase the easiness of disengagement between the locking claw portion and the locking groove portion as compared with the case where there is no tapered portion. Since the engagement with the insertion concave portion is the same as that of the conventional structure, the locking force between the locking claw portion and the locking groove portion can be maintained as before.

Further, according to the third aspect of the present invention, a plurality of locking claws are formed on one of the spigot fitting portions of the upper case and the lower case which can be spigot-fitted, and each of the engaging claws is formed on the other. A plate for forming a locking groove capable of locking the locking claw, and inserting a part of the plate-like material into a position between any two adjacent locking claw and the locking groove. In the electronic component storage small case in which the insertion recess is formed, at least one of the locking claw portions adjacent to the plate insertion recess is divided into two, so that the plate insertion recess is shifted. Is a temporary locking portion that can be locked to one of the edge surfaces of the upper case and the lower case.

According to the third aspect of the present invention, at least one of the locking claw portions adjacent to the plate insertion concave portion is divided into two, so that the electronic component storing small portion is formed. The effect of making the case easy to open is obtained.

That is, when the engagement state between the locking claw portion and the locking groove portion adjacent to the plate insertion concave portion is released by twisting the plate-like material, the divided locking claw portions are removed. A temporary locking portion near the plate insertion recess is formed around the plate insertion recess of the upper case and the lower case by temporarily locking the edge surface of the upper case or the lower case, just in a good condition. The gap is held in a largely open state, and the gap can be prevented from becoming narrow even when the plate-like object is removed. This makes it easy to insert and pry both thumb nails and fingertips into the gap and open the electronic component storage small case easily.

[0028]

First Embodiment A first embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 4 show a first embodiment of the present invention. The same or equivalent parts as those of the conventional example will be described with the same reference numerals.

First, the structure will be described. In the first embodiment, a plate insertion recess 15 for inserting a part of a peripheral edge of a plate-shaped plate-like material 22 such as a coin in the upper case 4 is provided. The notches 25 and 26 adjacent to the hooks 25 and 26 are partially notched in the portion near the plate insertion recess 15 so that the general portions 27 and 28 of the hooks 25 and 26 are moved to other positions ( (Particularly at the corresponding position) so as to be shorter than the general portion of another locking claw 11. Preferably, the notch portions of the locking claw portions 25 and 26 are replaced with the plate insertion recesses 15.
The tapered portion 29 where the amount of protrusion gradually decreases as approaching
a and b.

Then, at least one general portion 28 of the locking claws 25, 26 (in FIG. 2, the locking claws 26) adjacent to the plate insertion concave portion 15 is divided into two. By doing so, the claw piece near the plate insertion recess 15 is attached to one of the peripheral walls 3, 6 of the upper case 4 and the lower case 7.
(In this case, the temporary locking portion 30 can be locked to the edge surface 32 of the peripheral wall 6a of the lower case 7). In addition, in the general portion 28 of the locking claw portion 21 on the side that is not the temporary locking portion 30, a portion near the plate insertion concave portion 15 is tapered so that the protruding amount decreases as approaching the plate insertion concave portion 15. The part 31 may be formed.

The lower case 7 is the same as the conventional case.

Next, the operation of the first embodiment will be described.
This will be described with reference to FIG.

The operation of opening and closing the small case 1 for storing electronic parts is the same as in FIGS.

In the case of the present embodiment, a plate insertion recess 1 for inserting a part of a plate-like object 22 having a plate shape such as a coin.
The notch portions 25 and 26 adjacent to the plate 5 are cut out at portions near the plate insertion concave portion 15 so that the locking claw portions 2 and
The general portions 27 and 28 of the fifth and 26 are configured to be shorter than the other locking claw portions 11 at other positions. In this case, the general-purpose portions 27 and 28 enter the plate insertion concave portion 15 with a small force. A part of the engagement between the upper case 4 and the lower case 7 can be easily released by twisting the inserted plate-like material 22 such as a coin.

That is, when twisting the plate-like material 22 such as a coin inserted into the recess 15 for inserting a plate, as shown in FIG. The ends of the locking claw portions 25 and 26 adjacent to the plate insertion recess 15 on the side of the plate insertion recess 15 temporarily serve as fulcrum and action points b of the lever. The notch near the plate insertion concave portion 15 in the locking claw portions 25 and 26 adjacent to the arm is notched, so that the lever arm between the force point a and the fulcrum / action point b (conventionally b ′) can be Since the length is increased from c ′ to c, the engagement between the locking claw portions 25 and 26 and the locking groove portion 12 can be released with a correspondingly small twisting force.

At this time, since only the locking claw portions 25 and 26 adjacent to the plate insertion concave portion 15 are shortened, the locking force of the entire electronic component storage small case 1 is weakened more than necessary. Locking claw 25, 2 with a small twisting force while preventing
6 and the locking groove 12 can be released from engagement with each other.
The effect of making it difficult to damage the periphery of 5 is also obtained.

Further, the notches in the locking claws 25 and 26 are formed into tapered portions 29a and 29b, the amount of which is reduced as the distance from the recess 15 decreases.
The engagement force between the a and b and the insertion recess 15 is reduced, and the locking claw 25,
26 and the locking groove 12 can be easily detached, and the engagement between the opposite ends of the tapered portions 29a and 29b and the insertion recess 15 is the same as in the conventional structure. The locking force between the locking claws 25, 26 and the locking groove 12 can be maintained as before.

In addition, at least one of the locking claw portions 25 and 26 (referred to as the locking claw portion 26 in FIG. 2) adjacent to the plate insertion concave portion 15 is divided into two. The following effects can be obtained.

That is, a plate-like object 2 having a plate shape such as a coin.
When the engagement state between the locking claw portions 25 and 26 adjacent to the plate insertion concave portion 15 and the locking groove portion 12 is released by twisting 2, as shown in FIG. The temporary locking portion 30 of the claw portion 26 near the plate insertion concave portion 15 temporarily locks the edge surface 32 of the peripheral wall 6a of the lower case 7 just in a good condition. As a result, the upper case 4 and the lower case 7 are held in a state in which the gap d formed around the plate insertion concave portion 15 is largely opened, and the plate-like plate-like material 22 such as a coin is held. When removed, the edge surface 32 of the peripheral wall 6a of the lower case 7 is always locked to the temporary locking portion 30, so that the once opened gap d is prevented from becoming narrow. Therefore,
It is easy to insert and remove both thumb nails and fingertips into the gap d, and the electronic component storage small case can be easily opened.

A plate-like object 2 such as a coin, etc.
Since the gap between the upper case 4 and the lower case 7 formed when twisting 2 is not so large, and the amount of deformation of the upper case 4 and the lower case 7 made of resin is limited,
The entire locking claw portion adjacent to the plate insertion recess 15 does not lock the edge surface 32 of the peripheral wall 6 of the lower case 7, that is, is not temporarily locked, so that coins and the like are not locked. When the plate-like material 22 was removed, the gap became narrow, and as a result, it was difficult to open the case.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. Included in this invention.

For example, the plate-like material 22 can be of various shapes such as a disk shape and a polygonal shape, and the plate insertion concave portion 15 can also have a partial arc shape or a partial polygonal shape. .

[0044]

As described above, according to the first aspect of the present invention, the plate insertion at the locking claw portion adjacent to the plate insertion recess for inserting a part of the plate-like object. The notch near the recess is notched so that the general portion of the locking claw is shorter than another locking claw at another position, so that the recess for inserting the plate with less force is used. The case can be opened by the operation of twisting the plate-like object inserted into the case. That is, when twisting the plate-like object inserted into the plate insertion concave portion, the substantially central portion of the plate insertion concave portion becomes the lever's power point, and the plate plug in the locking claw portion adjacent to the plate insertion concave portion. The end on the side of the recess for insertion temporarily serves as a fulcrum and action point of the lever, but by notching a portion near the recess for insertion of the plate in the locking claw adjacent to the recess for insertion of the plate, Since the lever arm between the force point and the fulcrum / working point is longer than before, the engagement between the locking claw and the locking groove can be released with a correspondingly small twisting force.

At this time, since only the locking claw portion adjacent to the plate insertion concave portion is shortened, it is possible to prevent the locking force of the entire electronic component storage small case from unnecessarily weakening. Since the engagement between the locking claw and the locking groove can be released with a small twisting force, an effect is obtained in that the plate-shaped object is less likely to damage the periphery of the plate insertion concave portion.

According to the second aspect of the present invention, the notch portion of the locking claw is a tapered portion whose projection amount decreases as approaching the plate insertion recess. The engaging force of the locking claw portion and the locking groove portion can be more easily detached than when there is no taper portion, and the opposite end of the taper portion can be inserted into the locking groove. Since the engagement with the concave portion is the same as that of the conventional structure, the locking force between the locking claw portion and the locking groove portion can be maintained as before.

Further, according to the third aspect of the present invention, at least one of the locking claw portions adjacent to the plate insertion concave portion is divided into two to open the electronic component storage small case. The effect of making it easier is obtained. That is, when the engagement state between the locking claw portion and the locking groove portion adjacent to the plate insertion concave portion is released by twisting the plate-like material, the plate insertion of the separated locking claw portions is performed. The temporary locking part near the concave part for temporary locking of the edge surface of the upper case or the lower case just right, the gap formed around the plate insertion concave part of the upper case and the lower case is large. It is held in an open state, and the gap can be prevented from becoming narrow even if the plate-like object is removed. As a result, it is easy to insert and remove both thumb nails and fingertips into the gap, and the electronic component storage small case can be easily opened. .

[Brief description of the drawings]

FIG. 1 is a partially enlarged perspective view of a small electronic component storage case according to a first embodiment of the present invention.

FIG. 2 is a bottom view of the upper case of FIG. 1;

FIG. 3 is a schematic side view of the upper case of FIG. 1;

FIG. 4 is a schematic front view showing a state where the small case for storing electronic components of FIG. 1 is opened.

FIG. 5 is a bottom view of an upper case of a conventional small case for storing electronic components.

FIG. 6 is a plan view of a lower case of a conventional electronic component storage small case.

FIG. 7 is a partial sectional view of a conventional small case for storing electronic components.

FIG. 8 is a schematic perspective view showing an operation of assembling a conventional small case for storing electronic components.

FIG. 9 is a schematic perspective view showing an operation of disassembling a conventional small case for storing electronic components.

FIG. 10 is a schematic front view showing a state in which a conventional small case for storing electronic components is opened.

[Explanation of symbols]

 4 Upper case 7 Lower case 9, 10 Inner fitting part 11 Locking claw part 12 Locking groove part 15 Plate insertion concave part 22 Plate 25, 26 Locking claw part 27, 28 General part 29a, 29b Taper Part (notch) 30 Temporary locking part 32 Edge

Claims (3)

[Claims] An engaging member capable of forming a plurality of locking claws on one of a spigot fitting portion of an upper case and a lower case capable of fitting a spigot, and locking the locking claws on the other. An electronic component housing in which a stop groove is formed, and a plate insertion recess for inserting a part of a plate-like object at a position between any two adjacent locking claws and the locking groove is formed. In the small case, at least one of the two locking claws adjacent to the plate insertion concave portion is partially cut away at a portion closer to the plate insertion concave portion, thereby forming the locking claw portion. A small case for storing electronic components, wherein a general portion is shorter than another locking claw portion at another position. 2. The electronic component storage according to claim 1, wherein the notch of the locking claw portion is a tapered portion whose projection amount gradually decreases as approaching the plate insertion concave portion. For small case. 3. An engaging member capable of forming a plurality of locking claws on one of the spigot fitting portions of the upper case and the lower case capable of fitting with the spigot, and locking the locking claws with the other. An electronic component housing in which a stop groove is formed, and a plate insertion recess for inserting a part of a plate-like object at a position between any two adjacent locking claws and the locking groove is formed. In the small case, at least one of the locking claw portions adjacent to the plate insertion concave portion is divided into two, so that the claw pieces closer to the plate insertion concave portion are separated from the upper case and the lower case. A small case for storing electronic components, wherein the case is a temporary locking portion that can be locked to one of the edge surfaces of the case.