JP2984662B1 - Battery compartment - Google Patents

Abstract

A battery housing structure for an electronic device has excellent operability when a battery (particularly a rod-shaped battery) is inserted into and removed from the electronic device, and a battery cover for sealing a battery housing chamber is easily fixed to a housing. Of a battery storage unit that can be used. One side is fixed to a battery storage chamber (3 in FIG. 1) provided in a housing (1 in FIG. 1), and the other side faces an electrode of a battery (2 in FIG. 1) stored in the battery storage chamber. A positive electrode terminal (7 in FIG. 1) and a negative electrode terminal (8 in FIG. 1), and an openable and closable battery cover (4 in FIG. 1).
At least a part of a flexible spring (9, 1 in FIG. 2)
When the battery cover is closed, the pressing rib (13 in FIG. 1) provided on the battery cover abuts the negative electrode terminal, and the pressing rib contacts the negative electrode terminal so as to press the battery in the axial direction. Deform.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery accommodating portion, and more particularly to a battery accommodating portion which is suitably applied to accommodating and fixing a rod-shaped battery by a coil spring terminal.

[0002]

2. Description of the Related Art The structure of a conventional battery housing will be described with reference to the drawings. FIG. 7 is a perspective view for schematically explaining the structure of a conventional battery storage unit. As shown in FIG. 7, the conventional battery housing includes a battery housing 3, and a positive electrode terminal 7 and a flexible negative electrode terminal 28 provided at both ends thereof.
The main components are a battery cover 27 that can be opened and closed, a lock knob 30 for fixing the battery cover 27, and a housing 26 that supports these.

In such a conventional battery housing, the entire electrode terminal does not move, and the flexible negative electrode terminal 2
Since the contact surface 29 of the battery 8 with the battery electrode surface is provided at a position where the amount of compression is taken into consideration and interferes with the battery 2, the battery 2 is compressed when the battery 2 is inserted into the housing battery storage room 3. A spring pressure is received from the spring terminal 28. As described above, the operation of inserting the battery 2 into a predetermined position while resisting the spring pressure is not easy, and the operation of extracting the battery 2 from the housing 26 is less likely to catch a finger on the surface of the battery 2. In some cases, the task becomes difficult.

To solve this problem, Japanese Patent Laid-Open Publication No.
In JP-A-9, the movable terminal that moves in the battery axis direction and the pressing arm provided on the inner surface of the battery cover do not contact the movable terminal and the battery electrode when the battery cover is not attached to the case. By mounting the battery cover on the case, the battery cover pressing arm urges the movable terminal, and the movable terminal and the battery electrode are in contact with each other. For this reason, the battery is not subjected to the spring pressure when the battery is inserted or removed when the battery cover is not attached, thereby facilitating the operation.

[0005]

However, the movable terminal of the battery housing in the above-mentioned Japanese Patent Application Laid-Open No. 8-129999 is composed of at least two parts, a coil spring and a terminal main body, so that a single metal is used. There is a problem that the unit price and the number of assembling steps increase in comparison with a coil spring terminal manufactured from a wire.

[0006] Regarding the lock structure of the battery cover to the housing, a lock knob 30 is used in the conventional battery storage unit, and the lock knob 30 is attached to the housing 26 to open and close the battery cover 27. The structure enables the slide or the slide in the direction perpendicular to the rotation direction and engages with the battery cover 27. However, such a structure requires the addition and attachment of the lock knob 30, and the lock knob is required every time the battery is inserted or removed. There is a problem that an operation of sliding the 30 is also required.

On the other hand, as a lock structure that does not use a lock knob, there is a method of engaging a fitting hook provided on the battery cover with a housing by utilizing the flexibility of the battery cover. To take advantage of the flexibility of the battery cover, the rigidity of the battery cover must be reduced, and when the battery cover is pushed in with a finger to remove the battery cover fitting hook, the frictional force between the battery cover and the housing And the battery cover becomes difficult to slide and rotate.

The present invention has been made in view of the above problems, and a main object of the present invention is to operate a battery (especially a rod-shaped battery) in an electronic device in a battery housing structure. An object of the present invention is to provide a battery accommodating portion structure which is excellent in performance and can easily fix a battery cover for sealing a battery accommodating chamber to a housing.

[0009]

In order to achieve the above object, the present invention provides an electrode for a battery which is fixed on one side to a battery storage portion provided in a housing and the other side is stored in the battery storage portion. A positive electrode terminal and a negative electrode terminal, and an openable / closable cover, wherein the negative electrode terminal is at least partially
When the cover is closed, a pressing rib provided on the cover includes a spring having flexibility.
The outermost edge of the negative electrode terminal on the intersecting surface, and
In the region located on both sides of the battery shaft,
Abuts the negative electrode terminal and presses the battery in its axial direction
Thus, the pressing rib deforms the negative electrode terminal . It is preferable that the flexible terminal is manufactured by processing a single member.

In the present invention, the pressing rib is provided
As the battery cover closes, the terminal of the negative electrode terminal
The engagement portion is gradually moved in the axial direction of the battery.
When the battery cover is completely closed with the par surface and the pressing surface,
An engagement recess matching the terminal engagement portion, and the pressing rib;
Fix so that the terminal engaging part does not move freely.
And at least an engaging projection .

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In a preferred embodiment of the battery housing according to the present invention, one side is fixed to a battery housing (3 in FIG. 1) provided in a housing (1 in FIG. 1). A positive electrode terminal (7 in FIG. 1) and a negative electrode terminal (8 in FIG. 1), the other side of which faces the electrode of the battery (2 in FIG. 1) housed in the battery housing; Cover (4 in Fig. 1)
Wherein the negative electrode terminal includes a spring (9, 11 in FIG. 2) having at least a part of flexibility, and a pressing rib (FIG. 1) provided on the battery cover when closing the battery cover. 13) abuts on the negative electrode terminal, and the pressing rib deforms the negative electrode terminal so as to press the battery in the axial direction.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;

[Embodiment 1] A battery accommodating section according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view for schematically explaining the structure of the battery housing, and FIGS. 2 and 3 are an enlarged perspective view and a top view of the negative electrode terminal in FIG. FIG.
FIG. 5 is an enlarged perspective view of a part of the battery cover in FIG. 1, and FIG. 5 is a side cross-sectional view schematically illustrating how a battery is stored using the battery storage unit according to the first embodiment. .

First, with reference to FIG. 1, the structure of the battery accommodating portion of this embodiment will be described. As shown in FIG. 1, a housing 1 of the electronic device has a battery storage room 3 for storing a battery 2, and an opening of the battery storage room 3 is closed by a battery cover 4. The battery storage chamber 3 is provided with a positive electrode terminal 7 and a negative electrode terminal 8 which are in contact with the positive electrode surface 5 and the negative electrode surface 6 on both end surfaces of the battery and conduct to a circuit inside the electronic device. The positive electrode terminal 7 has no flexibility in its shape and holding structure,
The negative electrode terminal 8 is formed by processing a wire into a coil shape, and has flexibility in the coil axis direction. The attachment of the battery cover 4 to the housing 1 is based on the rotating shaft 18. The battery cover 4 rotates about the rotating shaft 18 with respect to the housing 1, and opens and closes the battery storage chamber 3.

Next, the shapes of the negative electrode terminal 8 and the battery cover 4, which are features of the present embodiment, will be described with reference to FIGS.

As shown in FIGS. 2 and 3, the negative electrode terminal 8
According to the function, the conical spring portion 9 having flexibility in the battery axis direction, the terminal engaging portion 10 on the rear end surface (the end surface opposite to the battery) of the conical spring portion 9, the conical spring portion 9 and the terminal engaging portion 10 are provided. It is divided into four parts: a movable spring part 11 that can move in the battery axis direction, and a terminal base part 12 that joins a circuit part in the housing. The negative electrode terminal of the conventional battery housing generally comprises only a conical spring portion and a terminal base, but in the present embodiment, the terminal engaging portion 10
In addition, the movable spring portion 11 is added. With such a configuration, the position of the contact surface 19 can be moved in the battery axial direction with the opening and closing of the battery cover 4.

The negative electrode terminal 8 is formed by processing and manufacturing a single metal wire. The contact surface 19 at one end is in contact with the battery electrode surface 6, and the terminal base 12 at the other end is a housing. The battery electrode surface 6 is connected to the internal circuit portion 21 in a fixed or contact manner, and conducts between the battery electrode surface 6 and the circuit portion 21.

Next, as shown in FIG. 4, the battery cover 4 is provided with a pressing rib 13, which is a feature of the present embodiment, on the inner surface of the cover.
5, an engaging projection 16 and an engaging recess 17 are provided. Taper surface 14, pressing surface 15, engaging projection 1 on pressing rib 13
When the positional relationship between the battery 6 and the engagement recess 17 is indicated by the moving direction at the time of the battery cover closing operation, the terminal engagement precedes the tapered surface 14 and the pressing surface 15, the engagement protrusion 16, and the engagement recess 17 are arranged in this order. It contacts and interferes with the joint 10.

Next, the relationship between the negative electrode terminal 8 and the pressing rib 13 on the battery cover 4 will be described in the open and closed states of the battery cover 4, respectively.

First, when the battery cover 4 is open, the distance between the battery contact surface 19 of the negative electrode terminal 8 and the positive electrode terminal 7 is longer or slightly shorter than the axial length of the battery 2. Therefore, the battery 2 can be freely moved in the potential storage chamber 3 or is not firmly fixed even when pressed by the negative electrode terminal 8, so that the battery 2 can be inserted into and removed from the battery storage chamber 3. Work or removal of the battery mounted between the terminals can be easily performed.

Next, when the battery cover 4 is closed,
The pressing surface 15 of the pressing rib 13 of the battery cover 4 is oriented in the battery axial direction, and the position of the surface is larger than the position of the terminal engaging portion 10 when the battery cover is opened.
Come to the side. For this reason, when the battery cover 4 is closed, the terminal engaging portion 10, that is, the rear end surface of the conical spring portion 9 is
The position is shifted to the battery negative electrode side 6 from the battery cover opened state due to the interference with the battery cover.

Further, at the position where the battery cover 4 is completely closed, the engaging corner 20 of the terminal engaging portion 10 and the engaging concave portion 17 on the pressing rib 13 are in the same positional relationship. At the position where the engagement corner 20 and the engagement recess 17 match each other, when the battery cover 4 rotates in the opening direction, the engagement protrusion 16 interferes with the terminal engagement corner 20 and is restrained. Therefore, in the completely closed position, the battery cover 4 has a fixed positional relationship with the negative electrode terminal 8, and the negative electrode terminal 8 is held by the housing 1. become.

Next, the operation at the time of inserting the battery 2 will be described with reference to FIG.

First, as shown in FIG. 5 (a), the battery cover 4 is opened, and the positive and negative electrode terminal surfaces 5, 6 of the battery 2 are aligned with the positive and negative electrode terminals 7, 8 and inserted into the battery storage chamber 3. At this time, the battery 2 receives no pressure from the positive and negative electrode terminals 7 and 8 or receives only a slight pressure from the negative electrode terminal conical spring portion 9.

Next, as shown in FIG. 5B, after the battery 2 is completely mounted in the battery storage chamber 3, the battery cover 4 is closed to the housing 1 to a predetermined position. In this embodiment, the operation is to rotate the battery cover 4 about the rotation shaft 18.

As the battery cover 4 rotates, the tapered surface 14 of the pressing rib 13 comes into contact with the engaging corner 20 of the terminal engaging portion 10, and as the battery cover 4 is closed (rotated), the terminal engaging portion is rotated. 10 is pressed against the tapered surface 14,
It moves to the negative electrode surface 6 side of the battery 2. At this time, FIG.
As shown in the figure, the movable spring portion 11 of the negative electrode terminal 8 follows the movement of the terminal engaging portion 10 due to its flexibility, and the conical spring portion 9 has the negative electrode surface of the terminal engaging portion 10 which is the rear end surface. 6 and is compressed by approach to the electrode surface 6 to increase the contact pressure with the electrode surface 6.

When the closing operation of the battery cover 4 is further continued, as shown in FIG.
The pressing rib 13 comes into contact with the pressing surface 15 and is pressed and moved toward the negative electrode surface 6, so that the compression amount of the conical spring portion 9 also increases.

When the battery cover 4 approaches the completely closed position, the engaging projection 16 on the pressing rib 13 comes into contact with the corner 20 of the terminal engaging portion. Since the front and rear of the engaging convex portion 16 are gently inclined, the terminal engaging corner 20 is further moved toward the negative electrode surface 6 by increasing the closing force of the battery cover 4, and rides on the engaging convex portion 16. The closing operation of the battery cover 4 can be continued.

Then, as shown in FIG. 5 (e), when the battery cover 4 is rotated to the completely closed position, the terminal engaging corners 20 and the engaging recesses 17 are aligned, and the battery cover 4 is moved relative to the housing. Locked. The amount of compression of the conical spring portion 9 of the negative electrode terminal 8 increases, and a predetermined contact pressure is secured to stabilize conduction. The effect of the movement of the conical spring portion 9 is the
, The terminal base 12 and the circuit portion 21 are not affected.

Next, the operation of removing the battery 2 will be described. In order to open the battery cover 4 which is locked with the housing 1, the terminal engaging corner 20 is engaged with the engaging projection 16 of the battery cover.
The battery cover 4 is rotated with a force capable of overcoming. Since the terminal engaging portion 10 is a part of the flexible conical spring portion 9, the lock of the battery cover 4 is released without any destruction, and the opening operation becomes possible.

When the battery cover 4 is opened, the pressing rib 1
3 is separated from the negative electrode surface 6, and the terminal engaging portion 10
Is returned to the position where the battery cover is opened while being brought into contact with the pressing rib 13 by being pulled by the restoring force of the extended movable spring portion 11. When the battery cover 4 is opened,
The terminal engagement portion 10 is completely returned to the original position, and the relative relationship between the conical spring portion 9, the positive electrode terminal 7, and the battery 2 becomes the same as that when the battery is inserted. In the battery removal operation in this state, similarly to the insertion operation, the pressure of the conical spring portion 9 is not applied at all, or only a slight pressure is applied.

As described above, according to the present embodiment, the battery is not removed from the housing and the pressure of the terminal conical spring is not applied, so that the battery can be easily and reliably removed.
Further, by using the engagement between the terminal and the battery cover 4 as a locking mechanism between the battery cover 4 and the housing 1, there is no need to separately provide a lock knob, and without operating the lock knob, the battery cover can be operated. The locking operation can be performed at the same time only by the opening and closing operation of 4.

[Embodiment 2] Next, a battery accommodating section according to a second embodiment of the present invention will be described with reference to FIG.
FIG. 6 is a perspective view for schematically explaining the structure of the second embodiment. The second embodiment is obtained by improving the mounting structure between the battery cover and the housing of the first embodiment.

Referring to FIG. 6, a pressing rib 13 of the battery cover 23 is used as a mounting structure of the housing 22 and the battery cover 23.
The housing engaging convex portion 24 is provided at the end opposite to the position where is installed, and the housing engaging concave portion 25 is provided on the housing 22 side. In this embodiment,
The battery cover 23 is completely separated from the housing 22, and the operation of closing the battery cover 23 to the housing 22 is performed by the battery cover 2.
After the case engaging protrusion 24 of No. 3 is matched with the case engaging concave portion 25, the battery cover 23 is tilted toward the case 22 with the engaging portion as a fulcrum.

According to this embodiment, the mounting structure of the housing and the battery cover can be further simplified as compared with the first embodiment.

[0036]

As described above, according to the present invention,
Easily and reliably insert the battery into the battery storage unit at a predetermined position, remove the battery from the battery storage room where there is little finger hooking, and securely close the battery cover. There is an effect that electrical contact with the battery can be obtained.

The reason is that in the present invention, when the battery cover is opened, the distance between the battery contact surface of the negative electrode terminal and the positive electrode terminal is longer or slightly shorter than the axial length of the battery. As a result, the pressure by the terminal conical spring is not applied, and when the battery cover is closed after the battery is mounted, the terminal engaging portion is further moved to the battery negative electrode surface side by the pressing rib of the battery cover. This is because the contact pressure between the terminal and the battery electrode surface can be sufficiently ensured by the compression of the conical spring.

Further, by using the engagement between the terminal and the battery cover as a locking mechanism between the battery cover and the housing, it is not necessary to separately provide a lock knob, and by adding a pressing rib to the battery cover, Locking work can be performed simultaneously only by opening and closing the battery cover.

In the present invention, since only a negative electrode terminal made of a single metal wire is provided with a terminal engaging portion and a movable spring portion and a pressing rib is added to the battery cover,
It does not increase the number of parts or complicate the assembly work.

[Brief description of the drawings]

FIG. 1 is a perspective view for explaining a structure of a battery storage unit according to a first embodiment of the present invention.

FIG. 2 is a perspective view for explaining a structure of an electrode terminal of the battery storage unit according to the first embodiment of the present invention.

FIG. 3 is a top view for explaining a structure of an electrode terminal of the battery storage unit according to the first embodiment of the present invention.

FIG. 4 is a perspective view illustrating a structure of a battery cover of the battery storage unit according to the first embodiment of the present invention.

FIG. 5 is a perspective view schematically illustrating how the battery is stored in the battery storage unit according to the first embodiment of the present invention.

FIG. 6 is a perspective view illustrating a structure of a battery storage unit according to a second embodiment of the present invention.

FIG. 7 is a perspective view for explaining the structure of a conventional battery housing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 22, 26 Case 2 Battery 3 Battery storage room 4, 23, 27 Battery cover 5 Positive electrode surface 6 Negative electrode surface 7 Positive electrode terminal 8 Negative electrode terminal 9 Conical spring part 10 Terminal engaging part 11 Movable spring part 12 Terminal base 13 Pressing rib 14 Taper surface 15 Pressing surface 16 Engagement projection 17 Engagement concave part 18 Rotating shaft 19, 29 Contact surface 20 Engagement corner 21 Circuit part 24 Housing engagement convex part 25 Housing engagement concave part 28 Spring Terminal 30 Lock knob

Claims (5)

(57) [Claims] An openable and closable positive electrode terminal and a negative electrode terminal, one side of which is fixed to a battery accommodating portion provided in a housing, and the other side facing an electrode of a battery accommodated in the battery accommodating portion. A battery cover, wherein the negative electrode terminal includes at least a part of a flexible spring, and when closing the battery cover, a pressing rib provided on the battery cover is orthogonal to an axis of the battery. Front in plane
At the outermost edge of the negative electrode terminal and across the battery axis.
A battery accommodating part , wherein in a region located on both sides, the pressing rib deforms the negative electrode terminal so as to contact the negative electrode terminal and press the battery in the axial direction. 2. The battery according to claim 1, wherein the negative electrode terminal is in contact with a negative electrode of the battery, contacts and engages with a conical spring portion for pressing the battery in the axial direction, and a pressing rib provided on the battery cover.
The shape has continuity with the maximum diameter of the conical spring.
A terminal engaging portion whose distance from a shaft is equal to or greater than a conical spring maximum diameter; a movable spring portion that freely expands and contracts as the terminal engaging portion moves in the axial direction of the battery by the pressing rib; battery housing of claim 1, further comprising a base that is fixed to the body, at least, characterized in that. 3. The battery housing according to claim 2 , wherein the negative electrode terminal is manufactured by processing a single member. 4. The battery device according to claim 1, wherein the pressing rib gradually moves the terminal engagement portion of the negative electrode terminal in the axial direction of the battery as the battery cover closes.
A tapered surface and a pressing surface, an engagement concave portion that matches the terminal engagement portion when the battery cover is completely closed, and an engagement that fixes the pressing rib and the terminal engagement portion so as not to move freely. The battery housing according to any one of claims 1 to 3 , further comprising at least a protrusion. 5. The battery cover according to claim 1, wherein when the battery cover is in a completely closed position, the battery cover and the negative electrode terminal are engaged, and the battery cover is locked to the housing. battery housing according to any one of 1 to 4.