JP2901410B2 - Back cover structure of wristwatch-type individual paging receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a back cover structure of a wristwatch-type individual paging receiver operated by a battery (such as a coin-type battery) requiring replacement.

[0002]

2. Description of the Related Art In recent years, individual paging receivers are:
Each year, miniaturization is progressing, and pencil types, card types, wristwatch types, and the like are put on the market. The structure of the conventional wristwatch type is almost the same as that of a general wristwatch, except that the battery is quickly consumed and the number of times of battery replacement is extremely large because the receiving circuit is driven. For this reason, a conventional wristwatch-type receiver (hereinafter, referred to as a receiver) has a structure in which a back cover is opened and closed for battery replacement.

As an example, as shown in FIG. 10, a case body 22 having bands 25 and 26 has a battery accommodating portion 23 on the back surface, and a back cover 24 is attached by four screws 27. Therefore, the user removes the four screws 27 and removes the back cover 24 when replacing the battery. After replacement, the user tightens the screws 27 again to fix the back cover 24 to the case body 22.

[0004]

In the above-mentioned conventional back cover structure, a tool such as a precision screwdriver must be used for opening and closing. For this reason, it is necessary for the user to always carry tools with the receiver in which the battery is frequently replaced. In addition, since the screws 27 are small and large in number, there is a problem that it takes time to remove the back cover 24 and the screws 27 and the back cover 24 are lost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and is capable of opening and closing a back cover (replacement of a battery) without using tools, preventing loss of the back cover, and easily opening and closing the watch. It is an object of the present invention to provide a back cover structure for an individual paging receiver.

[0006]

To achieve the above object, according to the present invention, there is provided a wristwatch-type individual call receiver having a battery housing provided on a back surface thereof, and one end of the case body having the battery housing. A back cover that covers the battery storage section by hinge-engaged with the back cover, and is slidably provided at the other end of the back cover. The back cover is engaged with the case body by this sliding. Is fixed to the case main body, and is constituted by a lock member that releases the engagement with the case main body and releases the fixing between the back cover and the case main body. In addition, the present invention according to claim 2 provides an engagement groove and a cover projection at an end of the back cover where the lock member is provided, and the lock member is a lock knob using a flexible material, The lock knob is provided with an engagement piece on one side which engages with the engagement groove, and a knob projection having a cutout engaging with the cover projection on the other side and slipping through the projection of the case body. When the back cover is fixed, the protrusion of the case body and the cover protrusion engage with each other, and when the fixing of the back cover is released, the protrusion of the case body overlaps with the notch and slips through. The back cover can be opened.

[0007]

According to the first aspect of the present invention, the lock member is slid to release the engagement with the case body, and the fixing between the back cover and the case body is released.
Then, open the back cover and replace the battery. After replacing the battery,
If the back cover is closed and the lock member is slid to engage with the case body, the back cover is fixed to the case body. Further, in the present invention according to claim 2, the flexible locking knob is deformed, and the engaging piece is engaged with the engaging groove of the back cover. When the back cover is fixed, the knob protrusions and the protrusions of the case body are engaged, and when the back cover is released, the cutouts and the protrusions of the case body overlap.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing a state where the back cover 4 of the case body 1 with the bands 9 and 10 is opened. The case main body 1 has a battery housing portion 2 on the back surface, and is provided with two main body projections 3a and 3b at the end opposite to the end that is hingedly engaged with the back cover 4. The back cover 4 is hingedly engaged with the case body 1 through a spring shaft 11 through a through hole 5 provided at one end.

As shown in FIGS. 2 and 3, the other end of the back cover 4 is provided with an engagement groove 4a, a cover projection 4b, and a cover recess 4c, and a lock knob 6 is slidably mounted. The cover recess 4c engages with the main body projection 3 when the back cover 4 is closed. The lock knob 6 is made of a flexible material having a substantially hook-shaped cross section, and is provided with an engagement piece 8 on one side and a knob protrusion 7 on the other side (see FIG. 3). Engagement piece 8
Are engaged with the engagement grooves 4a of the back cover 4 to prevent the lock knob 6 from falling off the back cover 4. The knob projection 7 is engaged with the cover projection 4b of the back cover 4, and has a cutout 7a having the same width as the main body projection 3, as shown in FIGS.

Next, the operation of the back cover structure having the above configuration will be described. As shown in FIG. 4, when the back cover 4 is closed with respect to the case main body 1 and the slidable lock knob 6 is held on the right side, the back cover 4 is locked. . That is, as shown in FIGS. 5 and 6, the knob projection 7 is engaged with the main body projection 3 to prevent the upward movement of the back cover 4.

Next, the lock knob 6 is slid to the left to reach the state shown in FIG. In this manner, as shown in FIGS. 8 and 9, the engagement between the knob projection 7 of the lock knob 6 and the main body projection 3 is released, and the locked state of the back cover 4 is released. That is, one of the main body protrusions 3 a is
And the other main body projection 3b overlaps with the notch 7a (see FIG. 9), so that the back cover 4 can be moved upward. As described above, when the locked state of the back cover 4 is released, the back cover can be opened around the hinge engagement as shown in FIG. 1, and the battery can be easily replaced.

The lock knob 6 can be easily attached to the back cover 4 by deforming the engagement piece 8 and the knob protrusion 7 when the lock knob 6 is made of a flexible material. .

[0013]

As described above, according to the present invention, the back cover can be opened and closed without using tools such as a precision screwdriver.
The related parts are also integrally formed so that the back cover can be easily opened and closed without fear of loss.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a back cover of a receiver using an embodiment is opened.

FIG. 2 is an exploded perspective view of a lock knob and a back cover of the embodiment.

FIG. 3 is a longitudinal sectional view showing engagement between a back cover and a lock knob.

FIG. 4 is a perspective view showing a state in which a back cover is closed and a lock knob is in a lock state position.

FIG. 5 is a vertical sectional view of a main part of FIG. 4;

FIG. 6 is a sectional view showing a DD section of FIG. 5;

FIG. 7 is a perspective view showing a state in which a back cover is closed and a lock knob is in an unlocked position;

FIG. 8 is a longitudinal sectional view of a main part of FIG. 7;

FIG. 9 is a sectional view showing a section taken along line EE of FIG. 7;

FIG. 10 is a perspective view showing a receiver having a conventional back cover structure.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 case main body 3 main body projection 4 back cover 4a engagement groove 4b cover projection 4c cover recess 6 lock knob 7 knob projection 7a cutout 8 engagement piece 27 screw

────────────────────────────────────────────────── ─── Continuation of the front page Examiner Michitaka Itabashi (56) References JP-A-58-64753 (JP, A) JP-A-4-207638 (JP, A) JP-A-5-244060 (JP, A) 64-50581 (JP, U) Jiko 41-2570 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) H04B 1/08 H01M 2/10 H04B 7/26

Claims (2)

(57) [Claims] 1. A case body of a wristwatch-type individual paging receiver having a battery housing provided on a back surface, a back cover for covering the battery housing by one end being hingedly engaged with the case body and being opened and closed, The other end of the back cover is slidably provided, the sliding engagement with the case body fixes the back cover to the case body, and the engagement with the case body is released to release the back cover. A back cover structure for a wristwatch-type individual paging receiver, comprising a cover and a lock member for releasing fixing of the case body. 2. A locking groove and a cover projection are provided at an end of the back cover on which the lock member is provided, and the lock member is a lock knob using a flexible material, and the lock knob has one side. An engaging piece that engages with the engaging groove, a knob projecting portion having a cutout that engages the cover projecting portion on the other side and that passes through the projecting portion of the case body, is provided; At the time of fixing, the projection of the case main body and the cover projection engage with each other. When the fixing of the back cover is released, the projection of the case main body overlaps with the notch so that the back cover can be opened by slipping through. 2. A back cover structure for a wristwatch-type individual call receiver according to claim 1, wherein: