JP4590695B2 - Battery terminal structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a battery terminal interlocking with an openable / closable battery cover provided in a portable electronic device such as a minidisc player or a headphone stereo. Specifically, the present invention relates to a conductive support portion and a conductive support portion. By providing a shaft member provided and a conductive contact plate rotatably supported by the shaft member, and providing a contact portion for contacting the conductive support portion at the base end portion of the conductive contact plate Even if the press-fitting of the base end portion of the conductive contact plate to the shaft member is weak, the tip of the contact portion always contacts the conductive support portion, so that a good electrical connection can be made and the contact failure It is related with the terminal structure for batteries which can prevent reliably.
[0002]
[Prior art]
Portable electronic devices such as mini-disc players and headphone stereos are provided with a rotating battery cover that opens and closes a storage part for storing a battery. On the back side of the battery cover, the positive terminal of the battery to be stored or A battery terminal for connection to the negative electrode terminal is provided.
[0003]
FIG. 14 is a schematic front view showing a configuration example of such a battery terminal, and FIG. 15 is a schematic plan view thereof. The terminal member 31 is generally composed of a base plate 32, a hinge shaft 33 erected on the base plate 32, and a hinge 35 that is lightly press-fitted at one end to the hinge shaft 33 and is rotatable. It is made up of.
[0004]
A cylindrical portion 35 a is formed at the base end of the hinge 35, and the cylindrical portion 35 a is lightly press-fitted into the hinge shaft 33. A protrusion 35 b is provided at a substantially central position in the left-right direction of the hinge 35 so as to contact the positive terminal 36 a of the battery 36. The base plate 32 is fixed to the printed circuit board 39 by screws 38 and is connected to contacts (not shown) of the printed circuit board 39.
[0005]
[Problems to be solved by the invention]
By the way, in the terminal member 31 as described above, electricity from the positive terminal 36a of the battery 36 is transmitted from the projection 35b of the hinge 35 to the contact of the printed circuit board 39 via the hinge shaft 33 and the base plate 32. If the cylindrical portion 35a of the hinge 35 that is lightly press-fitted into the shaft 33 has variations due to dimensional tolerances of each part or the use of the user due to user play, there is a possibility that a contact failure may occur.
[0006]
Further, when the inner diameter dimension of the cylindrical portion 35a of the hinge 35 is slightly smaller than the outer diameter dimension of the hinge shaft 33 and a considerable force is required for press-fitting, the assembly cannot be performed smoothly and the assemblability is improved. There was a problem of being bad.
[0007]
Therefore, the present invention has good assemblability, durability due to dimensional tolerance of parts, vibration, etc., even if the pressure contact between the hinge shaft and the hinge is loosened, it can be connected electrically and reliable contact failure is ensured. An object of the present invention is to provide a battery terminal structure that can be prevented.
[0008]
[Means for Solving the Problems]
The battery terminal structure according to the present invention is a battery terminal structure interlocked with a rotating battery lid that opens and closes a storage portion for storing a battery, and is a conductive support portion provided in the vicinity of the opening of the storage portion. And a shaft member erected on the conductive support portion, and a conductive contact plate whose base end portion is rotatably supported by the shaft member and whose distal end portion is in pressure contact with one electrode of the battery. The contact portion for contacting the conductive support portion is provided at the base end portion of the conductive contact plate.
[0009]
In the battery terminal structure according to the present invention, since the contact portion for contacting the conductive support portion is provided at the base end portion of the conductive contact plate, the dimensional tolerance of the component, durability due to vibration, etc. Even if there is play in the pressure contact between the shaft member and the base end portion of the conductive contact plate, the tip of the contact portion always contacts the conductive support portion, so that a good electrical connection can be achieved. Defects can be reliably prevented.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of a battery terminal according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall perspective view of a minidisc player to which a battery terminal according to an embodiment of the present invention is applied.
[0011]
As shown in FIG. 1, an opening / closing lid 3 is attached to the device main body 2 of the mini-disc player 1 through a hinge portion (not shown) disposed on the rear side thereof so as to be opened and closed. On the back surface side of the opening / closing lid 3, a disk holder 5 for housing a cartridge case, which is a protective case for a mini disk, is supported by the apparatus body 2 via a hinge portion (not shown) so as to be opened and closed. A locking piece 3a is formed substantially at the center in the left-right direction of the front part of the opening / closing lid 3, and a hook 6 is slidable in the left-right direction at the device body 2 corresponding to the locking piece 3a.
[0012]
The hook 6 is configured to be interlocked with an eject button 7 disposed substantially at the center of the front surface of the apparatus main body 2 in the left-right direction. When the eject button 7 is slid, the hook 6 is also slid, and the opening / closing lid 3 and the disc holder 5 can be opened. Furthermore, a battery lid 9 is attached to the right side of the front surface of the apparatus main body 2 so as to be openable and closable to the apparatus main body 2 via a hinge portion 27 described later.
[0013]
FIG. 2 is a perspective view showing a state in which the battery cover 9 is opened. The battery cover 9 is configured to rotate approximately 90 degrees via the hinge part 27 and to slide in the left-right direction when the battery cover 9 closes the battery storage part 12. A battery 13 is stored in the battery storage unit 12. The battery lid 9 is attached to the positive electrode terminal member 15, which is a battery terminal for coming into contact with the positive electrode terminal 13 a of the battery 13, so as to be slidable in the left-right direction. Therefore, the battery lid 9 can be rotated by the hinge portion 27 and can slide in the left-right direction.
[0014]
FIG. 3 is a plan view showing the terminal member 15 and the battery housing portion 12, and a dotted line shows a state in which the battery lid 9 is opened. A battery housing portion 12 is formed on the side of the mechanical chassis 16. The battery housing portion 12 is inserted such that the negative terminal 13 b of the battery 13 corresponds to the negative terminal member 17 and the positive terminal 13 a corresponds to the positive terminal member 15. The negative electrode terminal member 17 is fixed to the printed circuit board 18 with screws and connected to the contacts of the printed circuit board 18, and the positive electrode terminal member (hereinafter referred to as a terminal member) 15 is fixed to a printed circuit board (not shown) with screws 20. Connected to contact.
[0015]
FIG. 4 is an exploded perspective view of the terminal member according to the present invention. The terminal member 15 is a base plate 22 that is a conductive support portion, a hinge shaft 23 that is a shaft member that is erected on the base plate 22, and a conductive contact plate that is rotatably supported by the hinge shaft 23. It is generally composed of a hinge 24 and an elastic pressure contact member 25 attached to the hinge 24, and all are made of a metal member having conductivity. A hinge portion 27 is formed from the hinge shaft 23 and the hinge 24.
[0016]
In the present invention, even if the hinge 24 and the pressure contact member 25 are rotated as the battery lid 9 is opened and closed, one end of the pressure contact member 25 is always brought into contact with the base plate 22, Since it is not necessary to transmit electricity from the poles to the base plate 22 via the hinge shaft 23, contact failure does not occur even if the fit between the hinge shaft 23 and the hinge 24 is loose.
[0017]
The base plate 22 is provided with a burring mounting hole 22a for fixing to the printed board (not shown) with screws 20. By fixing the base plate 22 to a printed board (not shown) with screws 20, the base plate 22 and the contacts of the printed board are brought into conduction.
[0018]
FIG. 5 shows the base plate 22 with the hinge shaft 23 erected, where (a) is a plan view and (b) is a front view thereof. The base plate 22 is provided with a burring attachment hole 22a for inserting the screw portion of the screw 20. A step portion 22b is provided on one side of the base plate 22, and a hole 22c for fitting the hinge shaft 23 is formed in the step portion 22b. A notch 22d is provided in a peripheral portion of the hole 22c at the side end of the base plate 22 so that a contact portion 25a-1 (described later) of the pressure contact member 25 does not contact.
[0019]
The hinge shaft 23 is formed of a base end portion 23a for insertion into the hole 22c, a flange portion 23b having a diameter larger than that of the base end portion 23a, and a shaft portion 23c having a diameter smaller than that of the flange portion 23b. The base end portion 23a of the hinge shaft 23 is inserted into the hole 22c of the base plate 22 and caulked, and the flange portion 23b comes into contact with the peripheral portion of the hole 22c.
[0020]
FIG. 6 shows the hinge 24, (a) is a front view thereof, and (b) is a plan view thereof. The hinge 24 has a horizontally long plate shape, and a cylindrical portion 24a for light press-fitting into the shaft portion 23c of the hinge shaft 23 is formed at the base end, and a hole for caulking the pressure contact member 25 from the center to the base end side. 24b and a locking projection 24c for locking the pressure contact member 25 so as not to rotate are provided. A square hole 24d for advancing the protruding portion 25d of the pressure contact member 25 is formed in the central portion of the hinge 24, and a guide claw portion 24e serving as a guide for sliding the battery lid 9 is provided at the tip of the hinge 24. Is formed.
[0021]
The cylindrical portion 24a of the hinge 24 is lightly press-fitted into the shaft portion 23c of the hinge shaft 23, and one end of the cylindrical portion 24a is always in contact with the flange portion 23b of the hinge shaft 23.
[0022]
FIG. 7 shows the pressure contact member 25, (a) is a front view thereof, and (b) is a plan view thereof. A semi-cylindrical portion 25a is formed at the base end of the pressure contact member 25, and a distal end side branches from the center portion into a U shape. A hole 25b for caulking the pressure contact member 25 to the hinge 24 and a hinge 24 on one side of the U shape. A locking groove 25c for locking and a locking groove 25c for locking are formed. On the other side of the U-shape, a protrusion having elasticity for advancing into the square hole 24d and press-contacting with the positive electrode terminal 13a of the battery 13 is formed. A portion 25d is formed. On the base plate 22 side of the semi-cylindrical portion 25 a of the pressure contact member 25, a contact portion 25 a-1 for contacting the base plate 22 is projected.
[0023]
FIG. 8 shows a state in which the pressure contact member 25 is attached to the hinge 24, (a) is a front view thereof, and (b) is a plan view thereof. The semi-cylindrical portion 25a of the press contact member 25 is lightly press-fitted into the cylindrical portion 24a of the hinge 24, the hole 24b of the hinge 24 and the hole 25b of the press contact member 25 are aligned, and the locking projection 24c of the hinge 24 is connected to the press contact member 25. When the holes 24b and the holes 25b are caulked by being locked in the locking grooves 25c, the protruding portions 25d of the pressure contact member 25 are projected from the square holes 24d of the hinge 24.
[0024]
When the hinge 24 to which the pressure contact member 25 is attached is lightly press-fitted into the shaft portion 23c of the hinge shaft 23, the contact portion 25a-1 of the pressure contact member 25 is positioned outside the flange portion 23b of the hinge shaft 23 and the base plate 22 It is configured to come into pressure contact with the stepped portion 22b.
[0025]
Next, the movement of the terminal member 15 when the battery cover 9 is opened and closed will be described. FIG. 9 is a plan view showing the terminal member 15 with the battery cover 9 open. The hinge 24 and the pressure contact member 25 of the terminal member 15 are rotated outward, and the contact portion 25 a-1 of the pressure contact member 25 is in a position where it has advanced into the notch 22 d of the base plate 22. FIG. 10 is a schematic diagram showing the positional relationship between the contact portion 25a-1 and the notch 22d of the base plate 22 at this time. Here, the tip of the abutting portion 25a-1 advances from the upper surface of the stepped portion 22b of the base plate 22 into the notch 22d by a distance D (for example, 0.3 mm). Thus, when the battery lid 9 is opened, the hinge 24 and the pressure contact member 25 are also rotated in the opening direction, and the tip of the contact portion 25a-1 advances into the notch 22d. The hinge 24 and the pressure contact member 25 can be rotated.
[0026]
FIG. 11 is a plan view showing the terminal member 15 with the battery cover 9 closed. When the battery cover 9 is closed, the hinge 24 and the pressure contact member 25 of the terminal member 15 rotate inward, and the contact portion 25a-1 of the pressure contact member 25 moves from the notch 22d of the base plate 22 to the stepped portion 22b. It is in the position to contact. FIG. 12 is a schematic diagram showing the positional relationship between the contact portion 25a-1 and the step portion 22b of the base plate 22 at this time. Here, since the tip of the contact portion 25a-1 contacts the upper surface of the step portion 22b of the base plate 22, it is lifted by a distance D, and is in a state of being in pressure contact with the upper surface of the step portion 22b of the base plate 22. Become. For this reason, when the battery cover 9 is closed, the tip of the contact portion 25a-1 can be electrically connected to the base plate 22 in an excellent manner.
[0027]
Therefore, when the battery lid 9 is closed, the contact portion 25a-1 of the pressure contact member 25 is in pressure contact with the base plate 22, so that light press-fitting into the hinge shaft 23 of the cylindrical portion 24a of the hinge 24 is weak. However, the tip of the contact portion 25a-1 and the base plate 22 can be electrically connected well, and contact failure can be reliably prevented.
[0028]
Since the pressure contact member 25 is provided with an elastic protrusion 25d, even if the mini disc player 1 vibrates, the protrusion 25d and the positive terminal 13a of the battery 13 do not cause poor contact, and the vibration is not affected. However, contact can be reliably maintained.
[0029]
Further, when the battery cover 9 is rotated in the opening direction, the hinge 24 and the pressure contact member 25 are also rotated outward, and the tip of the contact portion 25a-1 of the pressure contact member 25 advances into the notch 22d. The battery lid 9, the hinge 24, and the pressure contact member 25 can be rotated with a small force, and the operability can be improved.
[0030]
Next, the battery terminal of 2nd Embodiment is demonstrated. As shown in FIG. 13, the hinge 29 and the pressure contact member of the battery terminal hinge 29 of the second embodiment are integrally formed. The hinge 29 has a horizontally long plate shape, and a cylindrical portion 29a is formed at the base end to be lightly press-fitted into the shaft portion 23c of the hinge shaft 23. The cylindrical portion 29a contacts the base plate 22 on the base plate 22 side. A contact portion 29a-1 for projecting is provided. Further, the cylindrical portion 29a is provided with a notch 29a-2, and the cylindrical portion 29a is configured to bend with a spring property when the contact portion 29a-1 contacts the stepped portion 22b.
[0031]
An elastic pressure contact portion 29b is formed at the center of the hinge 29 so as to be pressed against the positive electrode terminal 13a of the battery 13, and a guide claw portion 29c serving as a guide for sliding the battery lid 9 is formed at the tip. ing. Thereby, the hinge and the pressure contact member can be integrated, and the number of parts can be reduced and the assembling work can be facilitated.
[0032]
In the first and second embodiments described above, the pressure contact member 25 or the pressure contact portion 29b of the hinge 29 is in contact with the positive electrode terminal 13a of the battery 13. However, the present invention is not limited thereto, and may be in contact with the negative electrode terminal. Of course it is good. Although a front square battery is used, the present invention is not limited to this, and it is needless to say that a front circular battery may be used.
[0033]
【The invention's effect】
As described above, according to the present invention, since the contact portion for contacting the conductive support portion is provided at the base end portion of the conductive contact plate, durability due to, for example, dimensional tolerance of components or vibrations. Even if there is a backlash in the pressure contact between the shaft member and the base end of the conductive contact plate, the tip of the contact portion is always in contact with the conductive support portion. And contact failure can be reliably prevented.
[0034]
Even if the pressure contact between the shaft member and the base end of the conductive contact plate is loose, the tip of the abutting part always abuts the conductive support part and can be connected electrically well. Can be made relatively loose, can be easily press-fitted, can be assembled smoothly, and can be assembled.
[0035]
When the pressure contact part having elasticity for pressing the one electrode of the battery is provided at the tip of the conductive contact plate, even if vibration is applied to the battery housing part, the pressure contact part is surely connected to one side of the battery. The contact failure due to vibration can be surely prevented.
[0036]
The position where the conductive contact plate rotates in the opening direction and does not come into contact with one of the battery poles when a portion of the conductive support portion that comes into contact with the contact portion of the conductive contact plate is provided. In this case, since the contact portion advances into the notch, the battery lid and the conductive contact plate can be rotated with a relatively small force, and the operability can be improved.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a minidisc player to which a battery terminal according to the present invention is applied.
FIG. 2 is a partial perspective view of a mini-disc player when a battery cover is opened.
FIG. 3 is a plan view showing a terminal member and a battery housing portion.
FIG. 4 is an exploded perspective view of a terminal member according to the present invention.
FIG. 5 is a view showing a base plate in which a hinge shaft is erected.
FIG. 6 is a view showing a hinge.
FIG. 7 is a view showing a pressure contact member.
FIG. 8 is a view showing a state in which a pressure contact member is attached to the hinge.
FIG. 9 is a plan view showing the terminal member with the battery cover open.
FIG. 10 is a schematic diagram showing a positional relationship between a contact portion of a pressure contact member and a cutout of a base plate in a state where a battery cover is opened.
FIG. 11 is a plan view showing the terminal member with the battery lid closed.
FIG. 12 is a schematic diagram showing a positional relationship between a contact portion of a pressure contact member in a state where a battery cover is closed and a base plate.
FIG. 13 is a front view showing a hinge of a battery terminal according to a second embodiment.
FIG. 14 is a schematic front view showing a configuration example of a conventional battery terminal.
FIG. 15 is a schematic plan view showing a configuration example of a conventional battery terminal.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Minidisc player 2 Apparatus main body 3 Opening / closing lid 9 Battery lid 12 Battery storage part 13 Battery 13a Positive electrode terminal 13b Negative electrode terminal 15 Positive electrode terminal member (terminal member, battery terminal)
17 Negative terminal member 22 Base plate (conductive support)
22b Step 22d Notch 23 Hinge shaft (shaft member)
23b collar 24 hinge (conductive contact plate)
24a Cylindrical part 25 Pressure contact member (conductive contact plate)
25a Semi-cylindrical part 25a-1 Contact part 25d Projection part 27 Hinge part 29 Hinge (conductive contact plate)
29a Cylindrical part 29a-1 Contact part 29a-2 Notch 29b Pressure contact part

Claims (3)

A battery terminal structure that is linked to a rotating battery lid that opens and closes a storage section for storing a battery,
A conductive support provided near the opening of the storage unit;
A shaft member erected on the conductive support,
A base end portion is rotatably supported by the shaft member, and a tip end portion is provided with a conductive contact plate that is pressed against one of the electrodes of the battery,
A battery terminal structure, wherein a contact portion for contacting the conductive support portion is provided at a base end portion of the conductive contact plate. 2. The battery terminal structure according to claim 1, wherein an end of the conductive contact plate is provided with a pressure contact portion having elasticity to press contact with one of the electrodes of the battery. A portion of the conductive support portion that contacts the contact portion of the conductive contact plate is provided with a notch, and the conductive contact plate rotates in the opening direction so that it does not contact one of the electrodes of the battery. 2. The battery terminal structure according to claim 1, wherein in some cases, the contact portion is located in the notch.

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