JPS6326934Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a battery accommodating device, and is suitable for application to a battery accommodating device in electronic devices such as portable radio receivers and tape recorders.

For example, in a portable radio receiver, tape recorder, etc., if the battery case or cartridge is detachably provided separately from the main body of the device and is configured to be stored in a predetermined storage section provided in the main body of the device, There are the following problems. In other words, in such a battery storage device, in order to facilitate attachment and detachment of the battery case (hereinafter used to include the cartridge in the present invention), a biasing means is usually provided in the storage section or the battery case itself. It will be done. The battery case is always urged in the ejecting direction to the outside of the storage section by this urging means, and is held in the storage state by the locking means provided in the storage section. Therefore, when the locking means is released, the battery case is automatically ejected, and in order to store the battery case in the storage section, it is only necessary to push the battery case into the storage section.

However, with this configuration, when the battery case is ejected with the storage section facing down, the battery case may protrude more than necessary, especially due to the weight of the stored batteries. There is a risk that the battery case may come off and fall from the storage section due to the impact. Particularly in small and thin devices, it has heretofore been difficult due to space factors to provide an effective braking means for braking the ejection operation of the battery case as described above.

In addition, in the battery storage device configured as described above, dust may adhere to the surface of the connection terminal provided on the battery case and connected to the circuit section inside the device, or the surface may become corroded or oxidized. Another drawback is that it is easy to cause connection failures.

The present invention was developed in view of these problems, and aims to brake the battery case and avoid connection failures of the connection terminals with a structure as simple and compact as possible.

Hereinafter, an embodiment in which the present invention is applied to a battery storage device for a portable radio receiver will be described with reference to the drawings.

As shown in FIGS. 1 to 3, the radio receiver according to this embodiment is a so-called pocket-type extremely small and thin device, and a battery storage device 2 is provided on one side of the device body 1. ing. This battery storage device 2 includes a battery case 3 made of a plastic molded product provided separately from the main body 1 of the device.
and a storage section 4 provided on the device main body 1 side to store the battery case 3.

As shown in FIG. 4, FIG. 12, and FIG. It is inserted into this storage part 4 through the opening 7 of. These chassis 5 and cabinet 6 are each made of synthetic resin such as ABS resin. At the opening of the storage section 4, an engagement protrusion 8, which constitutes a rotational fulcrum for the battery case 3, is integrally provided on the chassis 5, and on the end face opposite to the engagement protrusion 8, an engagement protrusion 8 is provided. , a locking member 9 for holding the battery case 3 in the stored state is provided. Further, a through hole 10 is provided in the bottom wall of the storage section 4, and a coil spring 11 for biasing the battery case 3 in the ejection direction is disposed in the through hole 10. This coil spring 11 is fixedly attached to an inward flange 12 provided in the through hole 10.

As shown in FIGS. 4, 5, 12, and 13, the end wall 13 of the storage section 4 on the side where the locking member 9 is disposed has a A pair of elongated holes 14 extending in the depth direction of the storage portion 4 are provided in parallel, and a pair of metal springs 15 configured as contact terminals are disposed in these elongated holes 14, respectively. Each metal spring 15 is attached to a piano wire, etc.
It is constructed by bending and forming a single Ni-plated metal wire as shown in Figure 8. Each metal spring 15 is provided with a coil-shaped shaft support 16 approximately at the center thereof, and a pin-shaped projection 17 provided integrally with the chassis 5 is inserted relatively into this shaft support 16 to rotate the metal spring 15. A spring 15 is attached.

Tip 19 of one extension 18 of metal spring 15
is bent into an almost L-shape, as shown in Figures 4 and 12.
As shown in the figure and FIG.
are directly soldered to predetermined lands 21 of the printed circuit board 20 or electrically connected via lead wires. The other extension 22 of the metal spring 15 is bent into a crank shape, and when the one extension 18 comes into contact with the inner wall surface 23 of the chassis 5, the extension 22 is bent as shown in FIG. 4, for example. It is biased counterclockwise around the pin-shaped protrusion 17. Thereby, as shown in the figure, this extension part 22 protrudes into the storage part 4 through the elongated hole 14,
A bent portion of the extension portion 22 on the side of the shaft support 16 constitutes a contact portion 24 for contacting the connection terminals 49, 50 of the battery case 3. As shown in Figure 4,
When the battery case 3 is not inserted, the L-shaped bent portion 2 provided at the distal end side of the extension portion 22
5 is adapted to elastically abut against the inner surface 13' of the end wall portion 13. A pair of locking protrusions 26 are integrally provided on the inner wall surface 23 of the chassis 5 at positions on the outside of each of the pair of metal springs 15, and the extension portion 18 of the metal spring 15 engages with these locking protrusions. By coming into contact with the stop projection 26, the metal spring 15 is prevented from coming off.

As shown in FIGS. 6 and 7, a locking member 9 made of synthetic resin such as polyacetal resin
This includes a substantially rectangular plate-shaped operating section 29 for pressing the locking member 9, a connecting section 30 provided integrally with this operating section 29, and a connecting section 30 integrally provided on the other end side of this connecting section 30. A bearing part 31 is provided in a vertical direction, and an elastic arm 32 is integrally provided so as to extend from the bearing part 31 to the connecting part 30 in a substantially V-shape. A locking portion 40 for locking the battery case 3 is provided at the tip of the operating portion 29. As shown in FIG. 5, this locking member 9 is disposed within a recess 33 provided in the end wall portion 13 of the chassis 5, and as shown in FIGS. 4, 6, 12, and 13. As such, it is attached via the bearing portion 31 to a mounting portion 34 provided on the chassis 5 by riveting. Thereby, the locking member 9 is configured to be rotatable around the rivet 35. The bottom of the recess 33 is open as shown in FIG. 6, and the tip of the elastic arm 32 is locked to the end wall surface 36 of the chassis 5 forming the end of the opening 41. Due to the elastic action of the elastic arm 32, the locking member 9 is biased clockwise in FIG.
8, the locking member 9 is held in place.

The connecting portion 30 of the locking member 9 has a cross section of approximately L.
The elastic arm 32 is provided in a position corresponding to the stepped portion 39 of the connecting portion 30 and has a width 1 approximately equal to the width of the stepped portion 39 (see FIG. 7). By providing such a stepped portion 39, the angle θ between the elastic arm 32 and the connecting portion 30 is reduced.
(See FIG. 6) is relatively small, the elastic arm 32 can be largely deformed without being hindered by the connecting portion 30. Furthermore, as described above, the bottom surface of the recess 33 is opened and the elastic arm 32
Since only the tip of the elastic arm 32 is locked to the end wall surface 36 of the chassis 5, the elastic arm 32 can protrude into the bottom opening 41 of the recess 33 and be deformed. With this configuration, even though the locking member 9 is installed in a relatively narrow installation space, the movement length of the locking portion 40 integrated with the operating portion 29 can be increased. Note that the chassis 5 is provided with a stepped portion 42 for restricting movement of the operating portion 29.

Further, both sides 27 of the connecting portion 30 of the locking member 9,
28 is provided with a protrusion 43 and a protrusion 44, respectively, thereby reducing the contact area between the connecting portion 30 of the locking member 9 and the side wall surface of the recess 33.

The battery case 3 is made of synthetic resin such as ABS resin, and is designed to accommodate two AAA dry batteries 45, as shown in FIGS. 9, 12, and 13. An engagement step 46 is provided at one end of the battery case 3 to engage with the engagement protrusion 8 of the chassis 5 . As shown in the figure, the other end of the battery case 3 has two sloped surfaces 47 and 48 projecting like a roof, and as shown in FIGS. 9 and 10, this end has a roof shape. Two connection terminals 49 and 50 are provided parallel to each other along the pair of metal springs 15 of the housing portion 4. Further, at this end of the battery case 3, between the two connection terminals 49 and 50,
The locked part 5 is locked to the locking part 40 of the locking member 9
1 is provided protrudingly.

The connection terminals 49 and 50 are each made of a Ni-plated phosphor bronze plate, and the tip of the connecting plate portion 52 bent in a substantially U-shape is attached to the end wall surface 54 of the battery storage chamber 53. They are attached by being press-fitted into each pair of provided locking grooves 55, 56 from opposite directions. A coiled contact terminal 57 is press-fitted into one of the locking grooves 55 for press-contacting the negative electrode side end surface of the dry battery 45, and this coiled contact terminal 57 is attached to the tip of the connecting plate portion 52 of the connecting terminal 49. are in contact and electrically connected. Connection terminal 4
This coiled contact terminal 57 is attached to the connecting plate portion 52 of 9.
A cut-and-raised piece 58 is provided to prevent it from coming off. Note that the connection terminals 49 and 50 can have the same shape.

A connection terminal 59 made of a single metal wire is provided on the other end wall surface 64 of the battery storage chamber 53. This connection terminal 59 includes a coiled terminal portion 60 for press-contacting the negative electrode side end surface of the dry cell battery 45, a linear terminal portion 61 for contacting the positive electrode of the dry cell battery 45, and a coil terminal portion 60 for connecting the two terminal portions 60, 61. The two dry batteries 45 are connected in series to each other via the connection terminals 59. Coiled terminal portion 6 of connection terminal 59
0 is press-fitted and fixed into a pair of locking grooves 62 provided on the end wall surface 64, and the connecting portion 63 of the connecting terminal 59 is fixed in a protruding portion 65 provided on the end wall surface 64.
It is locked in a locking groove 66 formed at the upper end of. Although not shown, the tip of the linear terminal portion 61 is bent into an L-shape, and when this bent portion is inserted into the insertion hole 67 formed in the end wall surface 64, the linear terminal portion 61 is positioned and prevented from coming off.

As shown in FIG. 11, the bottom wall surface 68 of the battery storage chamber 53 is provided with a recess 69 for positioning the dry battery 45 and a pair of openings 70 for facilitating the removal of the dry battery 45.

Next, the battery storage device 2 configured as above
The operation of attaching and detaching the battery case 3 will be described with reference to FIGS. 12 and 13.

When inserting the battery case 3 into the storage section 4,
First, as shown by imaginary lines in FIG. 12, the engagement step 46 of the battery case 3 is engaged with the engagement protrusion 8 of the chassis 5. And this engagement protrusion 8
When the battery case 3 is rotated in the counterclockwise direction in the figure using the rotation fulcrum, the lower corner of the battery case 3 comes into contact with the inclined surface 73 provided at the tip of the operating part 29 of the locking member 9. The inclined surface 73 is pressed in the direction of arrow A. As a result, the locking member 9 is rotated in the direction of arrow A, and the battery case 3 is inserted into the storage portion 4 as shown by the solid line in the figure. At this time, the pair of metal springs 15 disposed inside the storage portion 4 abut the connection terminals 49 and 50 on the battery case 3 side, respectively, and are pressed by these connection terminals 49 and 50 to rotate around the pin-shaped protrusion 17. Rotate clockwise in the figure.
When the battery case 3 is inserted into the stored state shown by the solid line in the figure against the biasing force of the coil spring 11 provided at the bottom of the storage section 4, the locking member 9
moves back in the direction opposite to the direction of arrow A due to the elastic force of the elastic arm 32, and the locking portion 40 provided at the tip of the operating portion 29 locks the locked portion 51 of the battery case 3. do. This maintains the battery case 3 in its stored state.

To take out the battery case 3 from the storage section 4,
The operating portion 29 of the locking member 9 is pressed in the direction of arrow A with a finger or the like. At this time, the locking member 9 is configured such that the pressing force from the locked portion 51 of the battery case 3 on the locking portion 40 acts in the radial direction from the rotation center 35 of the locking member 9. has been done. Therefore, the above-described pressing operation of the operating section 29 can be performed with a very small force. By pressing the locking member 9 in this manner, the engagement between the locking portion 40 of the locking member 9 and the locked portion 51 of the battery case 3 is released, and the battery case 3 is Due to the biasing force of the spring 11, the chassis 5
It rotates clockwise in FIG. 12 using the engagement protrusion 8 as a rotation fulcrum.

At this time, the pair of metal springs 15 provided on the end wall 13 of the storage section 4 press the connection terminals 49 and 50 of the battery case 3 with a pressing force of, for example, 300 to 500 g. The ejecting operation of the battery case 3 due to the urging force of the coil spring 11 is braked by the frictional force between the connecting terminals 49 and 50. And the first
As shown in FIG. 3, the battery case 3 is separated from the coil spring 11 and the contact portion 24 of the metal spring 15
and the engagement protrusion 8 which is the fulcrum.
The battery case 3 is stopped when the inclined surface 47 of the battery case 3 is at an angle θ ₁ substantially perpendicular to the angle θ 1 . That is, first, in the stored state of the battery case 3 shown by the solid line in FIG. 12, the inclined surface 47 of the battery case 3 is inclined at an angle θ ₂ of 90° or less on the right side of the straight line h, A force F, which is a component of the pressing force by the metal spring 15 and is perpendicular to the inclined surface 47, is acting on the left side of the straight line h. Then, by rotating the battery case 3 clockwise in FIG. 13, the direction of the force F changes to the first direction.
When the inclined surface 47 is tilted to the right in FIG. 3 and forms an angle θ ₁ perpendicular to the straight line h, the force F is superimposed on the straight line h. When the battery case 3 is rotated more clockwise in FIG. 13 than above, the force F tends to tilt to the right of the straight line h as shown by the dotted line in FIG. It acts to push the case 3 counterclockwise in FIG. 13, that is, to push it back into the storage section 4.

As a result of the above, the battery case 3 rotated clockwise in FIG. 13 by the biasing force of the coil spring 11 is at a position where the force F overlaps the straight line h;
That is, it is stabilized at the position shown in FIG. 13, and braking is performed reliably at that position.

By the way, the above operation is a so-called pop-up operation, and by pressing the operation part 29 of the locking member 9 in the direction of arrow A with a finger or the like, the battery case 3 stored in the storage part 4 is brought into the state shown in FIG. It will be pop-up.

After popping up, the tip of the battery case 3 can be pinched with fingers or the like and taken out from the storage section 4.

As described above, in this embodiment, the metal spring 15 configured as a contact terminal on the device main body 1 side is used as a braking means for the battery case 3.
The pressing force 5 holds the battery case 3 in a so-called pop-up state as shown in FIG. Therefore, even if, for example, the battery case 3 is ejected with the storage section 4 facing downward, the battery case 3 will not fall out of the storage section 4.

Furthermore, during the insertion and ejection operations of the battery case 3, the contact portion 24 of the metal spring 15 is pressed against the surfaces of the connection terminals 49, 50 of the battery case 3 and slid relative to each other, so that these operations By doing this, the contact portion 24 of the metal spring 15 connects to the connection terminal 4.
The surfaces of the connecting terminals 49, 50 and the contact portion 24 are rubbed, thereby removing dust, corrosion, oxide film, etc. on the surfaces of the connecting terminals 49, 50 and the contact portion 24.
In short, in this example, each time the battery case 3 is inserted or ejected, the connection terminals 49, 50 and the contact portion 24 of the metal spring 15 are self-cleaned, thereby effectively preventing connection failures. .

The present invention has been described above with reference to one embodiment.
The above embodiments do not limit the present invention in any way, and various changes can be made based on the technical idea of the present invention. For example, the metal spring 15 can be configured as a leaf spring. Furthermore, various types of biasing means can be used to bias the battery case 3 in the ejection direction.
It can also be constructed as an elastic piece provided integrally with the chassis 5 at the bottom.

Further, the present invention can be applied to various electronic devices other than the radio receiver as in the above embodiment, such as a portable tape recorder.

As explained above, in the present invention, the metal spring configured as a connection terminal for electrically connecting the battery case and the circuit of the main body of the device is also used as a braking means for the battery case. A sudden ejection operation of the battery case by the force means can be avoided, and therefore the battery case is prevented from coming off and falling from the storage section. In addition, the structure is extremely simple, the number of parts and the number of assembly steps can be reduced, and the structure can be made compact, so that it can be easily applied to, for example, small and thin devices. Furthermore, as the metal spring and the connection terminal on the battery case side move relative to each other while being pressed against each other, the contact surface between them self-cleans, making it possible to eliminate poor connections between them. can.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Fig. 1 is an external perspective view of the radio receiver with the battery case removed, Fig. 2 is an external perspective view similar to Fig. 1 with the battery case stored, and Fig. 3 is a partial side view of the same as above. Figure 4 is a sectional view taken along the - line in Figure 3 with the battery case removed, and Figure 5 is a cross-sectional view of Figure 4.
6 is a sectional view taken along the - line in FIG. 5, FIG. 7 is a perspective view of the locking member, FIG. 8 is a perspective view of the metal spring, and FIG. 9 is a plan view of the battery case. ,
Fig. 10 is a view taken along the - line in Fig. 9, Fig. 11 is a sectional view taken along the line XI-XI in Fig. 9, and Fig. 12 is a sectional view similar to Fig. 4 to show the insertion operation of the battery case. ,
FIG. 13 is a sectional view similar to FIG. 4 showing the battery case in a pop-up state. In addition, in the symbols used in the drawings, 3...battery case, 4...storage section, 9...locking member, 11...
Coil spring, 15...Metal spring, 49,5
0... Connection terminal.

Claims (1)

[Claims for Utility Model Registration] Consisting of a device main body 1 and a battery case 3, the battery case 3 is box-shaped and configured to be detachable from the device main body 1, and the device main body 1 has a storage section. 4 is provided, and this storage part 4 is configured as a recessed part for storing the battery case 3, and this storage part 4 is provided with a rotation fulcrum 8, a locking means 9, and a metal spring 15, respectively. The pivoting fulcrum 8 is provided on one end wall of the opening 7 of the storage section 4, and the metal spring 15 is provided on an end wall opposite to the end wall where the pivoting fulcrum 8 is provided. It is electrically connected to the circuit section of the main body 1, and the battery case 3 has an engaging section 46, an inclined surface 47,
48 and connecting terminals 49 and 50, respectively, the engaging portion 46 is provided on the outer wall surface of the battery case 3, and the inclined surfaces 47 and 48 are provided on the outer wall surface of the battery case 3, and the inclined surfaces 47 and 48
The connection terminals 49 and 50 are provided on the sloped surfaces 47 and 48, and are provided on the outer wall surface opposite to the outer wall surface on which the battery case 3 and the battery case 3 are provided. A biasing means 11 is provided on either side of the storage section 4, and engages the engaging section 46 of the battery case 3 with the pivot point 8 of the storage section 4 to rotate the battery case 3. The metal spring 15 of the storage portion 4 engages the connection terminal 4 of the battery case 3 in this storage state.
9 and 50, and when the locking by the locking means 9 is released and the battery case 3 is moved in the discharge direction by the urging force of the urging means 11, the metal spring 15 The connection terminals 49, 5
A battery storage device characterized in that the battery case 3 can be locked and held at a position in the middle of being ejected by a pressing force against zero.