JPH1012206A - Battery housing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery housing structure whose follow-up performance is increased and permanent set and breaking are eliminated by using a linear spring as a terminal spring. SOLUTION: A plus terminal part 20 and a minus terminal part 22 are composed of plate bodies 24 and 26 composed of an insulating material and a linear spring 28 composed of a conductive material. A pair of recessed grooves turning in the vertical direction are formed on a front face of a main body 6 of the plate body 24 of the minus terminal part 22, and a distance between a pair of these recessed grooves is formed in a dimension larger than a diameter of a plus side electrode. Both sides 4402 of a left bending part 44 of the linear spring 28 are fitted in the recessed grooves, and the lower side 4404 of the bending part 44 is locked on a back face of a projecting part 42, and the left and right upper sides 4406 of the bending part 44 are locked on a back face of a leg part 38. Therefore, the plate body 24 is swingably supported, and a lower part of the plate body 24 is supported by being energized in a condition of being deviated in the direction of a terminal 60 composed of opposed conical coil springs.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a reverse connection preventing function for preventing a contact between a conductor as a contact and a battery electrode when the battery electrode is mounted in a direction opposite to a predetermined direction. More specifically, the present invention relates to a structure of a negative terminal portion having a reverse connection preventing function.

[0002]

2. Description of the Related Art Conventionally, in the case of a portable electronic device which uses a battery as a power source, a predetermined number of batteries are mounted on a battery storage structure provided in the device. In this case, the battery housing structure is provided with a reverse connection preventing function for preventing a conductor, which is a contact point, from coming into contact with a battery electrode when the battery electrode is mounted in a direction opposite to a predetermined direction. is there.

FIG. 10 shows an example of a conventional battery housing structure having such a reverse connection preventing function. The battery case 10 includes a conductor 2 in contact with the positive electrode 5 of the battery B and a conductor 3 in contact with the negative electrode 6 of the battery B.
Are provided at positions facing each other. In this case, each of the conductors 2 and 3 is made of a material having elasticity such as a spring (hereinafter referred to as an elastic material). On the left and right sides of the conductor 3 that is in contact with the plus side electrode 5, insulating protrusions 4 protruding slightly longer than the conductor 3 are arranged so that the conductor 3 is sandwiched between the left and right protrusions 4. And the positional relationship.
In this case, the interval ta between the left and right projections 4 is
Is slightly larger than the diameter φ1 of the plus side electrode 6 protruding from

With such a shape, when the battery B is mounted in the battery housing structure 10 in a direction opposite to the state shown in the figure, the positive conductor 2 contacts the negative electrode 6 of the battery B. Is prevented by the projection 4. Further, as another conventional technique, there is also known a technique in which an insulating mold 8 is formed around a leaf spring 7 as shown in FIG.

[0005]

However, the conventional reverse connection preventing structure as shown in FIG. 10 has a problem that a spring having a very high elastic force cannot be used as the conductor 2 on the positive side. . That is, in order for the electrodes 5 and 6 of the battery B attached to the battery case 10 to stably come into contact with the conductors 2 and 3, it is necessary for the conductors 2 and 3 to have a certain elasticity. Therefore, it is necessary to secure a large elastic deformation amount. However, since the protrusion height of the protrusion 4 is limited by the size of the battery case 10, the elastic deformation amount of the spring cannot be increased. Therefore, when the protrusion 4 is provided, the contact force between the positive conductor 2 and the positive electrode 5 of the battery B tends to be insufficient.

In order to solve this problem, as a mechanism capable of moving as a projection 4 for preventing contact with the negative electrode 6 of the battery B, the projection 4 is interlocked when the conductor 2 on the positive side is elastically deformed. Although it is conceivable to make the projection 4 move as described above, it is necessary to use a projection of a complicated mechanism composed of a combination of a plurality of parts. Furthermore, as can be seen from the shape, the projection for preventing reverse connection having such a shape can be applied only to the positive electrode 5 of the battery B, and cannot be applied to the negative electrode 6.

In the prior art shown in FIG. 11, since the leaf spring 7 is used, a sufficient amount of bending (following amount) of the spring is taken due to a problem such as set or break of the leaf spring 7. In addition, there is a problem that a mold and material cost for forming a plate material are required. SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has an object to provide a battery housing structure in which a linear spring is used as a terminal spring to increase follow-up properties, and to eliminate sagging or breakage. .

[0008]

In order to achieve the above object, the present invention relates to a battery housing structure in which a plus terminal portion and a minus terminal portion are provided on an inner wall of a battery case so as to face each other. The part is a plate made of an insulating material,
A linear spring made of a conductive material, wherein the linear spring is engaged with the plate to hold the plate; a terminal extending to the surface of the plate; a battery; The terminal portion is disposed on the surface of the plate so as to be in contact with the negative electrode of the battery and not in contact with the positive electrode of the battery. It is characterized by the following.

According to the present invention, if the negative electrode of the battery is correctly inserted toward the negative terminal, the negative electrode contacts the terminal of the linear spring and becomes conductive, but if the negative electrode is inserted in the opposite direction. On the other hand, the positive electrode of the battery does not contact the terminal spring and does not conduct because it contacts the plate body, thereby preventing reverse connection. Since the terminal portion is formed of a linear spring, the follow-up amount becomes large, and malfunction due to set of the spring or the like is effectively prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. In FIG. 1, the battery storage unit 1
A pair of concave portions 16 and 18 partitioned by a central partition portion 14 are formed on the inner wall of one end portion of the battery case 11 constituting the battery case 2. Each of the minus terminal portions 22 is mounted.
The plus terminal portion 20 and the minus terminal portion 22 are shown in FIG.
(A) and (b) are front views, and plates 24 and 26 made of an insulating material as shown in perspective views in FIGS. 4 (a) and (b), and a linear spring made of a conductive material as shown in FIG. 28.

The plate body 26 of the plus terminal portion 20 has ribs 32 formed on both sides of the central main body 30 from the upper and lower sides to the lower part, and a pair of vertically extending concave grooves 34 formed on the front surface of the main body 30. A groove 50 is formed in the lower portion of the main body 30 so as to be continuous with the front surface of the battery B, and the distance between the pair of concave grooves 34 is formed to be smaller than the diameter of the positive electrode 5 of the battery B.

The plate 24 of the negative terminal portion 22 is
Legs 38 projecting upward on both sides of the upper side of the rectangular main body 36 are formed, and a pair of concave grooves 40 are formed on the front surface of the main body 36 in a vertical direction, and a protruding part 42 is formed on the lower side of the main body 36. The distance between the pair of concave grooves 40 is larger than the diameter of the positive electrode 5 of the battery B.

The linear spring 28 has a wide, downwardly convex bent portion 44 on the left side and a narrow, downwardly convex bent portion 46 on the right side.
Are formed, and a bent portion 48 which is vertically elongated vertically and convex downward is formed in the center. The plate members 26 and 24 of the plus terminal portion 20 and the minus terminal portion 22 are disposed in the concave portions 16 and 18 of the battery case 12, respectively, and held by a linear spring 28 shown in FIG.

The left and right pieces 4802 of the central bent portion 48 of the linear spring 28 are located on both sides of the partition portion 14, and the lower piece 4804.
Are the lower part of the partition part 14 and the bottom wall 1002 of the battery case 11.
It is fitted in the space between. Both ends 52 of the linear spring 28 are formed by slits 5 formed in the side wall of the battery case 11.
8 and is locked on the bottom wall 1002 of the battery case 11.

The both sides 4602 of the bent portion 46 of the linear spring 28 are fitted into the concave grooves 34 of the plate 26 of the plus terminal portion 20, and the lower side 4604 of the bent portion 46 is fitted into the groove 50 at the lower end of the rib 32. The upper and lower sides 4606 of the bent portion 46 pass through the rear portion of the rib 32. As a result, the plate body 26 is swingably supported with the left and right upper sides 4606 as fulcrums, and the lower part of the plate body 26 is biased in a state of being displaced in the direction of the terminal 60 formed by the conical coil springs facing each other. Supported.

The concave groove 40 of the plate 24 of the negative terminal portion 22
Include both sides 4402 of the left bent portion 44 of the linear spring 28.
(Corresponding to the second straight portion) and the bent portion 4
The lower side 4404 (corresponding to a third linear portion) of the bent portion 44 is locked to the back surface of the projecting portion 42, and the upper left and right sides 4406 (first
(Corresponding to a straight portion) is locked on the back surface of the leg portion 38. As a result, the plate body 24 is swingably supported with the left and right upper sides 4406 as fulcrums, and the lower part of the plate body 24 is urged in a state of being displaced in the direction of the terminal 60 formed by the conical coil springs facing each other. Supported. Therefore, in this embodiment, as shown in FIG. 8, the lower portion 4402A of both sides 4402 of the bent portion 44 is a portion closest to the facing terminal 60 (corresponding to a proximity portion).

Next, the operation of mounting the battery will be described. As shown in FIG. 8, when the negative electrode 6 of the battery B is correctly set in the negative terminal portion 22, the bent portion 44 of the linear spring 28
The minus side electrode 6 contacts the lower portion 4402A of both sides 4402 of the side 4402 (shown by a chain line 54 in FIG. 1) to conduct. As shown in FIG. 9, when the battery B is reversely connected, that is, when the plus side electrode 5 contacts the minus terminal portion 22, the plus side electrode 5 is connected to the main body 3 of the plate body 24 between both sides 4402.
The six portions are contacted (indicated by a chain line 56 in FIG. 1) and become non-conductive.

Further, as shown in FIG.
When the plus side electrode 5 of the battery B is correctly set to 0, the plus side electrode 5 comes into contact with both sides 4602 of the linear spring 28 and conducts. However, as shown in FIG. When the side electrode 6 is directed to the minus terminal portion 22, the minus electrode 6 comes into contact with the rib 32 of the plate body 26 and becomes non-conductive.

As described above, the battery housing structure according to the present embodiment has the function of preventing reverse connection and uses the linear spring 28 as the negative terminal portion 22 and has a function of following the conventional leaf spring. As a result, the durability and reliability of the spring are improved, the durability and reliability are increased, and a mold for manufacturing a leaf spring is not required, so that the cost can be reduced.

The structure for achieving the reverse connection preventing function is different from the structure of the embodiment in which both sides 4402 of the bent portion 44 are arranged at an interval larger than the diameter of the plus side electrode 5. For example, various configurations such as a single linear portion extending to a location away from the plus side electrode 5 are possible, and the configuration is not limited to the configuration of the embodiment.

[0021]

As described in detail above, the present invention relates to a battery housing structure in which a plus terminal portion and a minus terminal portion are provided on the inner wall of a battery case so as to face each other. And a linear spring made of a conductive material, wherein the linear spring is locked to the plate to hold the plate, and a terminal extending to the surface of the plate. And a supporting portion for supporting the plate to the battery case, wherein the terminal portion is exposed on the surface of the plate so as to be in contact with the negative electrode of the battery and not in contact with the positive electrode. And arranged. In other words, the use of a linear spring for the terminal part provides a reverse connection prevention function, improves followability compared to conventional leaf springs, increases resistance to set and break of the spring, and increases durability. In addition, the reliability is increased, and a mold for manufacturing the leaf spring is not required, so that the cost can be reduced. Therefore, an instantaneous power failure caused by settling of the spring can be prevented, and a highly reliable battery housing structure can be obtained.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing one embodiment of a battery housing structure of the present invention.

FIG. 2 is a front view of a terminal spring.

3A is a front view showing a plate body of a minus terminal part, and FIG. 3B is a front view showing a plate body of a plus terminal part.

FIG. 4A is a perspective view showing a plate body of a minus terminal portion, and FIG. 4B is a perspective view showing a plate body of a plus terminal portion.

FIG. 5 is an explanatory diagram of a normal connection state of batteries at a positive terminal portion.

FIG. 6 is an explanatory diagram of a reverse connection state of batteries at a positive terminal portion.

FIG. 7 is a perspective view of a minus terminal portion.

FIG. 8 is an explanatory diagram of a normal connection state of a battery at a minus terminal portion.

FIG. 9 is an explanatory diagram of a reverse connection state of a battery at a negative terminal portion.

FIG. 10 is an explanatory view of a conventional battery housing structure having a reverse connection prevention function.

FIG. 11 is an explanatory diagram of a conventional positive terminal portion.

[Explanation of symbols]

5 ... plus side electrode, 6 ... minus side electrode, 10, 1
1 battery case, 20 plus terminal section, 22 minus terminal section, 24, 26 plate, 28 linear spring, 30, 36 body, 32 rib, 38 Legs, 44, 46 ... Bends, B: Batteries.

Claims (7)

[Claims] 1. A battery housing structure in which a plus terminal portion and a minus terminal portion are provided on an inner wall of a battery case so as to face each other, wherein the minus terminal portion is made of a plate made of an insulating material and a conductive material. A linear spring, wherein the linear spring is engaged with the plate to hold the plate, a terminal extending to the surface of the plate, and supporting the plate to the battery case. And a support portion, wherein the terminal portion is arranged so as to be exposed on the surface of the plate body so as to be in contact with the negative electrode of the battery and not to be in contact with the positive electrode. Battery storage structure. 2. The plate body includes a substantially flat rectangular main body, a protruding portion formed on one side of the main body, and legs formed on both ends of the side of the main body opposite to the one side. ,
The linear spring includes first linear portions at both ends which are locked to the back surface of the leg portion, and a first linear portion bent from an inner end of each of the first linear portions and extending toward the protruding portion on the surface of the plate body. A second straight portion, and a third straight portion connected between the distal ends of the two second straight portions and locked on the back surface of the protruding portion, wherein the first, second, and third straight portions are engaged with each other. The battery housing structure according to claim 1, wherein a part is configured, the terminal part is configured by the second linear part, and a support part is configured by the first linear part. 3. The battery according to claim 2, wherein an interval between the second straight portions is formed to be larger than the diameter of the plus electrode of the battery to be housed and smaller than the diameter of the minus electrode of the battery. Storage structure. 4. The two linear portions each have an adjacent portion which is located closer to an end surface of a negative electrode of a battery to be accommodated than another portion.
Or the battery storage structure according to 3. 5. The plate body is supported by the linear spring so as to be displaceable in a direction of separating from and approaching the plus terminal portion, and is urged and held toward the plus terminal portion side. The battery storage structure according to any one of claims 1 to 4. 6. The inner wall of the battery case is provided with two pairs of a positive terminal portion and a negative terminal portion, which are opposed to each other by reversing the directions of the positive terminal portion and the negative terminal portion. The positive terminal portion includes a second plate made of an insulating material and a second linear spring made of a conductive material, and a rib is formed around the second plate. A locking portion for locking the second linear body to the second plate body to hold the plate body, a terminal portion extending inside the rib on a surface of the second plate body, A supporting portion for supporting the second plate body to the battery case, wherein the terminal portion is
4. The battery according to claim 1, wherein the rib is formed so as to contact a positive electrode of the battery, and the rib is formed so as to contact a negative electrode of the battery to prevent the negative electrode from contacting the terminal portion. 5. 6. The battery storage structure according to claim 5. 7. In the plus terminal portion and the minus terminal portion arranged in parallel, the linear spring of the negative terminal portion and the second linear spring of the plus terminal portion are constituted by a continuous single linear spring. The battery storage structure according to claim 6.