JP2007201097A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus in which one detent provided in one cabinet member is engaged with the other detent provided in the other cabinet member to assemble the one cabinet member to the other cabinet member mutually, thereby in advance preventing a decrease of an egaging force caused by fall-down, etc. of the detent or a reduction of a release load caused by a wear, etc. of the detent. <P>SOLUTION: One cabinet member 3 is provided with a spring member 5S for urging one detent 4p provided in one cabinet member 4 to an engaging direction with the other detent 3p provided in the other cabinet member. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

    In the present invention, the one claw provided on one housing member is fitted to the other claw provided on the other housing member, and the one housing member and the other housing member are assembled to each other. It is related with the electronic equipment which consists of.

    For example, in a mobile phone that is an aspect of an electronic device, by fitting one casing member and the other casing member, specifically, an outer case and a battery cover, with claws provided respectively, Products configured to be assembled with each other are provided (see, for example, Patent Document 1).

  In the conventional foldable mobile phone A shown in FIGS. 10 to 12, a lower casing L and an upper casing U are connected to each other through a hinge portion H so as to be freely opened and closed, and the lower casing L is assembled to each other. The lower outer case C and the lower outer case C are assembled, and the battery cover D is assembled to the lower outer case C so as to close the battery chamber opening Co.

  Case side claws Cp projecting inward of the lower housing L are formed at the side edge of the battery chamber opening Co in the lower outer case C, while the side edge of the battery cover D is formed at the side edge of the battery cover D. The cover side claws Dp projecting outward from the lower housing L are formed, and the case side claws Cp and the cover side claws Dp are alternately engaged as shown in FIG. The battery cover D is assembled to the lower outer case C.

On the other hand, as shown in FIG. 12B, the side edge of the battery cover D is pressed from above as indicated by the arrow f, and the cover side claw Dp is moved downward with respect to the case side claw Cp of the lower outer case C. After disengaging the side claws Cp and the cover side claws Dp, the battery cover D can be removed from the lower outer case C by sliding the battery cover D laterally (leftward in the figure). it can.
JP 2004-265789 A

By the way, when the cover side claw Dp falls down due to the “variation” of the shape of each product in the battery cover D, as shown in FIG. 13A, the battery cover D is attached to the lower outer case C. The engagement depth w between the case side claw Cp and the cover side claw Dp is shown in FIG.
This is less than the engagement depth W in the normal state shown in a), and there is a disadvantage that the fitting force between the case side claw Cp and the cover side claw Dp is greatly reduced.

  Further, by repeatedly attaching and detaching the battery cover D to the lower outer case C, as shown in FIG. 13B, when the tips of the case side claw Cp and the cover side claw Dp wear out, the battery cover is attached to the lower outer case C. The engagement depth w between the case side claw Cp and the cover side claw Dp in the state where D is assembled is smaller than the engagement depth W in the normal state shown in FIG. There was a problem that caused a significant decrease in the release load with respect to D.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an electronic device that can prevent a decrease in fitting force caused by a fall of a nail or a release load caused by a nail wear or the like. It is what.

    In order to achieve the above object, an electronic apparatus according to the invention of claim 1 is configured such that one claw provided on one casing member is fitted to the other claw provided on the other casing member, and one casing is provided. An electronic apparatus in which a member and the other casing member are assembled to each other, wherein a spring member that urges the other claw in a direction to fit the one claw is provided on one casing member. It is said.

  An electronic device according to a second aspect of the present invention is the electronic device according to the first aspect of the present invention, wherein the spring member is constituted by an elastic tongue piece formed integrally with a metal part provided on one casing member. It is a feature.

  According to a third aspect of the present invention, there is provided an electronic apparatus according to the second aspect of the present invention, wherein the metal part integrally formed with the elastic tongue piece is connected to the ground of the electronic circuit.

According to the electronic device of the first aspect of the invention, the spring member provided on one of the housing members biases the other claw that is falling down in the direction of fitting with the one claw. The engagement depth between the claws becomes large.
In addition, when the other casing member is pressed down and the other claw is removed from the one claw, the spring member provided on the one casing member urges the other claw in the direction of fitting with the one claw. A large release load is required even in a state where the one claw and the other claw are worn.
Therefore, according to the electronic device relating to the invention of the first aspect, it is possible to prevent a decrease in fitting force due to a fall of the nail or a decrease in a release load due to a wear of the nail.

  In the electronic device according to the invention of claim 2, the spring member for biasing the other claw is constituted by an elastic tongue piece formed integrally with a metal part provided on one housing member, There is no need to separately prepare a spring member as a single component, and thus a reduction in manufacturing cost due to a decrease in the number of components can be achieved.

  According to the electronic device relating to the invention of claim 3, static electricity that has entered from the vicinity of the fitting portion between the one claw and the other claw is transmitted through a metal part that forms an elastic tongue as a spring member that urges the other claw. Therefore, it is possible to prevent various problems caused by intrusion of static electricity from the outside.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
1 to 6 show an embodiment in which the present invention is applied to a mobile phone which is an aspect of an electronic apparatus. The foldable mobile phone 1 includes a lower casing 1L constituting a main body, a lid body, and the like. The lower housing 1L and the upper housing 1U are connected to each other through a hinge portion 1H so as to be opened and closed.

  The lower housing 1L has a lower inner case 2 and a lower outer case 3 assembled to each other, and the battery chamber opening 3a formed in the lower outer case (one housing member) 3 has the battery A battery cover (the other casing member) 4 is assembled in such a manner as to close the chamber opening 3a.

  The side edge 3e of the battery chamber opening 3a in the lower outer case 3 is formed with a case side claw (one claw) 3p that protrudes inward of the lower housing 1L. The part 4e is formed with a cover-side claw (the other claw) 4p that protrudes outward from the lower housing 1L. As shown in FIG. 3, the case-side claw 3p and the cover-side claw 4p are alternately arranged. The battery cover 4 is assembled to the lower outer case 3 by engaging with.

  Further, in the lower housing 1L, the cover side claw 4p is fitted to the case side claw 3p as described in detail later in a region below the cover side claw 4p of the battery cover 4 assembled to the lower outer case 3. An elastic tongue piece 5s is installed as a spring member that urges in the mating direction.

  As shown in FIGS. 3 to 5, a battery chamber panel (metal part) 5 is fixedly installed inside the lower outer case 3, and the elastic tongue piece 5 s constituting the spring member is formed by the battery chamber panel 5. In FIG. 1, the panel body 5a and the elastic tongue 5s protrude from the panel body 5a constituting the partition wall of the battery chamber. The panel body 5a and the elastic tongue 5s are integrally formed by pressing a metal thin plate such as a stainless steel material. .

  On the other hand, as shown in FIG. 3, a shield case 11 covering an electronic component (not shown) mounted on the wiring board 10 is attached to the wiring board 10 fixedly installed inside the lower inner case 4. The plurality of projections 5c formed on the panel body 5a of the battery chamber panel 5 come into contact with the top plate 11t of the shield case 11, so that the elastic tongue 5s in the battery chamber panel 5 is shielded. The case 11 is connected to the ground of the electronic circuit.

  In the cellular phone 1 having the above-described configuration, when the battery cover 4 is assembled to the lower outer case 3 so as to close the battery chamber opening 3a, as shown in FIG. 6A, the case side claw 3p and the cover side Since the claws 4 p are alternately engaged over the engagement depth W, the battery cover 4 is securely and securely assembled to the lower outer case 3.

  As shown in FIG. 6A, in the state where the battery cover 4 is assembled to the lower outer case 3 in the normal position mode, the cover side claw 4p of the battery cover 4 and the lower side of the cover side claw 4p A clearance Q having a clearance Q smaller than the engagement depth W is set between the elastic tongue piece 5s positioned at the position C and the case side claw 3p and the cover side claw 4p. Unnecessary stress does not act on the fitting part.

On the other hand, in order to remove the battery cover 4 assembled to the lower outer case 3, first, FIG.
As shown in FIG. 6B, the side edge of the battery cover 4 is pushed down from above with a predetermined release load as indicated by the arrow f, and the cover side claw 4p is moved down more than the engagement depth W (see FIG. 6A). The cover side claw 4p is disengaged from the case side claw 3p, and then the battery cover 4 is slid in the lateral direction (left direction in the figure), so that the battery cover 4 is removed from the lower outer case 3. It is.

  Here, the elastic tongue 5s positioned below the cover side claw 4p is deformed as the cover side claw 4p moves downward, and the cover side claw 4p is moved relative to the case side claw 3p as indicated by the arrow r by the elastic restoring force. Therefore, when the battery cover 4 is removed from the lower outer case 3, the cover side claw 4p is engaged against the elastic restoring force of the elastic tongue piece 5s. In order to move down more than the combined depth W, it is necessary to apply a large release load to the battery cover 4.

  By the way, even if the cover side claw 4p falls down due to the “variation” of the shape of each product in the battery cover 4 as shown by a two-dot chain line in FIG. The cover side claw 4p is pushed back to a substantially normal position indicated by a solid line by the upward elastic restoring force (in the direction of the arrow r) of the piece 5s.

  That is, it can be said that the elastic tongue piece 5s for urging the cover-side claw 4p functions as a jig for correcting and holding the cover-side claw 4p in an ideal position.

  Thus, the case side claw 3p and the cover side claw 4p are engaged in a substantially normal state by the cover side claw 4p being pushed back to a substantially normal position by the biasing force of the elastic tongue 5s. The engagement is made over the depth W (see FIG. 6 (a)), so that a decrease in the fitting force between the lower outer case 3 and the battery cover 4 due to the fall of the cover side claw 4p is prevented. It will be.

  On the other hand, by repeatedly attaching and detaching the battery cover 4 to and from the lower outer case 3, as shown in FIG. 8, when the tips of the case side claw 3p and the cover side claw 4p wear out from the normal state indicated by the two-dot chain line, The engagement depth w between the case side claw 3p and the cover side claw 4p in the state in which the battery cover 4 is assembled to the case 3 should be smaller than the normal engagement depth W (see FIG. 6A). However, the reduction of the release load on the battery cover 4 can be suppressed by the action of the elastic tongue piece 5s as described above.

  That is, when the side edge of the battery cover 4 is pushed down from above in order to remove the battery cover 4 from the lower outer case 3, the elastic return force of the elastic tongue piece 5s deformed with the downward movement of the cover side claw 4p. Since the cover-side claw 4p is biased in the direction in which the cover-side claw 3p is fitted to the case-side claw 3p, a large release load is required even when the case-side claw 3p and the cover-side claw 4p are worn away.

  FIG. 9 shows the release load and the remaining release load associated with an increase in the number of times of attaching and detaching the battery cover in the mobile phone of the embodiment shown in FIGS. 1 to 8 and the conventional mobile phone shown in FIGS. It is the table | surface which showed the experimental result which compared the rate (%).

As is apparent from this table, the release load decreases from 27.3N to 10.2N after 4000 attachments / detachments in the conventional configuration, and the remaining rate is only 37.4%. In the configuration, although the release load decreases from 17.2N to 8.0N after 4000 attachments / detachments, the remaining rate reaches 46.5%, and the reduction of the release load is effectively suppressed.

  Thus, according to the mobile phone 1 of the above-described embodiment, it is possible to prevent a decrease in the fitting force between the lower outer case 3 and the battery cover 4 due to the fall of the cover side claw 4p, and the case side claw. It is possible to prevent a decrease in the release load due to wear of the 3p and the cover side claw 4p.

  Further, according to the mobile phone 1 of the above-described embodiment, the elastic tongue (spring member) 5s for urging the cover side claw 4p of the battery cover 4 is formed integrally with the panel body 5a of the battery chamber panel 5. Therefore, it is not necessary to separately prepare a spring member as a single component, and thus it is possible to achieve a reduction in manufacturing cost due to a decrease in the number of components.

  Further, in the mobile phone 1 of the above-described embodiment, as shown in FIG. 5, in order to avoid interference with the cover side claw 4 p at the edge of the battery chamber opening 3 a in the lower outer case 3 when the battery cover 4 is attached or detached. Although the opening 3o is formed, the elastic tongue 5t facing the opening 3o is connected to the ground of the electronic circuit through the shield case 11 as described above, and is elastic even if static electricity enters from the opening 3o. Since the tongue piece 5t falls to the ground, problems such as damage to electronic components due to intrusion of static electricity can be prevented.

  In the above-described embodiment, the example in which the present invention is applied to the assembly portion of the lower outer case and the battery cover of the mobile phone has been shown. However, for example, a nail fitting such as an assembly portion of the lower outer case and the lower inner case It goes without saying that the present invention can be effectively applied to various places where the occurrence of inconveniences associated with the operation is concerned.

  Needless to say, the present invention can be applied not only to the mobile phone shown in the embodiment but also to various electronic devices such as a portable information terminal.

(a) And (b) is the front side external appearance perspective view and back side external appearance perspective view of the mobile telephone which is one Example of this invention. The rear view of the mobile phone shown in FIG. III-III sectional view taken on the line in FIG. FIG. 2 is an exploded perspective view of a lower outer case and a battery compartment partition of the mobile phone shown in FIG. 1. The disassembled perspective view of the lower outer case and battery cover of the mobile phone shown in FIG. (a) And (b) is notional sectional drawing which shows the time of the fitting of the lower outer case and the battery cover of the mobile telephone shown in FIG. 1, and the time of attachment / detachment. The conceptual sectional drawing which shows the state at the time of fitting with the lower outer case and battery cover of the form telephone shown in FIG. The conceptual sectional drawing which shows the state at the time of fitting with the lower outer case and battery cover of the mobile telephone shown in FIG. The table | surface which shows the fluctuation | variation of the release load by a battery cover attachment / detachment test. (a) And (b) is a front side external perspective view and a back side external perspective view of a conventional mobile phone. FIG. 11 is a rear view of the mobile phone shown in FIG. 10. (a) And (b) is the XII-XII sectional view taken on the line in FIG. 11 which shows the time of the fitting of a lower outer case and a battery cover, and the time of attachment / detachment. (a) And (b) is a conceptual sectional view showing a state at the time of fitting a lower outer case and a battery cover.

Explanation of symbols

    1 ... Mobile phone (electronic device).

1L ... lower housing,
3 ... lower outer case (one housing member),
3p: Case side nail (one nail),
4 ... battery cover (the other casing member),
4p ... cover side nail (other nail),
5 ... Battery compartment panel (metal parts),
5a ... Panel body,
5s: elastic tongue piece (spring member).

Claims (3)

An electronic device in which the one claw provided on one housing member is fitted to the other claw provided on the other housing member, and the one housing member and the other housing member are assembled with each other. Because
An electronic apparatus comprising: the one casing member provided with a spring member that urges the other claw in a direction in which the other claw is fitted to the one claw. 2. The electronic apparatus according to claim 1, wherein the spring member is an elastic tongue piece formed integrally with a metal part provided on the one housing member. 3. The electronic apparatus according to claim 2, wherein the metal part integrally formed with the elastic tongue piece is connected to a ground of an electronic circuit.

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