JP2592738Y2 - Battery pack with lock lever - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack having a lock lever which is elastically deformed when detached from an electric device.

[0002]

2. Description of the Related Art FIG. 1 shows a conventional battery pack 1 which can be mounted on an electric device in a locked state. The battery pack 1 shown in this figure includes a lock lever 2. The lock lever 2 has a claw portion 2A that catches on an electric device. The claw portion 2A
While being attached to the electric device as shown in FIG. 2, as shown in FIG. 3, it is hooked on the recess 3 </ b> A of the electric device 3. The lock lever 2 is elastically deformed when the battery pack 1 is detached from the electric device 3. To remove the battery pack 1 from the electric device 3, the operation unit 2B is pushed in the direction indicated by the arrow A in FIG.
When the operation portion 2B is pushed in this direction, the claw portion 2A comes off the concave portion 3A of the electric device 3, and the battery pack 1 can be removed.

[0003] A pair of +/- contacts are provided on the mounting surface of the battery pack 1 to the electric equipment 3, and come into contact with the terminals of the electric equipment 3 when mounted on the electric equipment 3. ing. The electric device 3 may be a load such as a computer or a mobile phone, or a charger for the battery pack 1. When the electric device 3 is a load, the load can be driven by mounting the battery pack 1. On the other hand, when the electric device 3 is a charger, the battery pack 1 can be charged by mounting the battery pack 1.

[0004]

The battery pack 1 shown in FIG. 1 can be detached from the electric device 3 by operating the lock lever 2. However, when the battery pack 1 having this structure is detached from the electric device 3, the lock lever 2 may be broken. If a force is applied to the lock lever 2 in the direction indicated by the arrow B in FIG. 1, the lock lever 2 is greatly deformed and exceeds the elastic limit. When handling the battery pack, it is impossible to prevent any force that breaks the lock lever from acting. For some reason, excessive force may act on the lock lever. For example, when the battery pack is carried in a container together with an external object, another object may hit the lock lever and bend forcibly. Further, the lock lever may be pushed strongly without knowing that the lock lever is broken. If the lock lever is broken, even if the built-in battery can be used, it cannot be used as a battery pack.

In order to prevent this problem, the lock lever may be hardened to make it tough. However, a hard lock lever cannot smoothly remove the battery pack. This is because the lock lever is elastically deformed when the battery pack is removed. In particular, when removing the battery pack from the electric device, it is necessary to press the operating portion of the lock lever to deform the battery pack, so that a hard battery pack cannot be easily removed. For small battery packs, the lock lever itself is small,
If this is hard, it will be very difficult to remove. The lock lever must be designed so that it can be easily deformed in order to smoothly attach and detach the battery pack. A lock lever that is easily deformed becomes a lock lever that is easily broken. The lock lever has characteristics that the battery pack can be easily attached and detached and that the battery pack is easily broken.

This invention has been developed to satisfy two mutually contradictory characteristics. An important object of the present invention is to provide a battery pack having a lock lever that can be easily, easily and smoothly detached while preventing the lock lever from being broken.

[0007]

The battery pack according to the present invention has the following configuration to achieve the above object.
The battery pack 1 includes a lock lever 2 that is hooked on an electric device 3. The lock lever 2 has such a property that it can be elastically deformed outward from the case so that the battery pack 1 can be elastically deformed when it is detached from the electric device 3. The lock lever 2 has a claw 2A that is hooked on the electric device 3 to be set, and an operation unit 2B that releases the claw 2A from being caught on the electric device 3.

Further, the battery pack 1 of the present invention has a rib for contact with the inner surface of the case when the operating portion 2B of the lock lever 2 is pushed to forcibly push the claw portion 2A toward the outside of the case. 2C is provided on the lock lever 2. Push the operation unit 2B to the outside of the case and press the lock lever 2
Is greatly deformed, the breaking rib 2C contacts the inner surface of the case to limit the maximum deformation amount of the lock lever 2.

[0009]

FIG. 4 shows a case 4A of a battery pack according to a preferred embodiment of the present invention. The case 4A of the battery pack shown in FIG.
Is provided. As shown in FIGS. 5 and 6, when the ribs 2C for folding are connected to the cases 4A and 4B containing the battery,
It is located inside another case 4B.

When the operating portion 2B is pushed to push the lock lever 2 out of the case 4A as shown by an arrow C in FIG. 4, the locking rib 2C collides with the inner surface of the case 4B, and the locking lever 2C is locked. The deformation of the lever 2 is prevented. For this reason,
As shown by arrow D in FIG.
Although it can be deformed inside A, it cannot be deformed outside the case as shown by arrow C. The lock lever that is not deformed to the outside of the case is largely deformed and does not break.

As described above, in the battery pack of the present invention, since the lock lever prevents the lock lever from being broken, the lock lever can be designed to be easily bent inside the case. The lock lever, which easily bends inward, allows the battery pack to be inserted and removed smoothly. For this reason, the battery pack of the present invention has a feature that it can be smoothly attached to and detached from an electric device, and the breakage of the lock lever can be effectively prevented.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment described below exemplifies a battery pack for embodying the technical idea of the present invention, and the present invention does not specify the structure of the battery pack as follows.

Further, in this specification, in order to make it easy to understand the scope of claims for utility model registration, the numbers corresponding to the members shown in the embodiments are indicated in the "column for claims for utility model registration", "column for actions". "And" Means for solving the problem ". However, the members indicated in the claims of the utility model registration are not specified as the members of the embodiment.

The battery pack 1 shown in FIG. 5 has a case 4 in which a secondary battery (not shown) is built and closed. In the battery pack 1 shown in this figure, a case 4A shown in FIGS. 4 and 7 is connected to a case 4B shown in FIGS. 6 and 8, and a secondary battery is fixed inside. FIG. 8 is a perspective view of the case 4B as viewed upside down.

The cases 4A and 4B are integrally formed in a rectangular box shape of plastic. Box-shaped case 4
A and 4B incorporate the secondary batteries and connect the peripheral walls 5A and 5B. The peripheral wall 5 B of the case 4B, the peripheral wall of the case 4A 5 A
Somewhat larger than. The peripheral wall 5 B of the case 4B, there is a groove 6 on the inside of the open end. Connecting the casing 4A and 4B by fitting the peripheral wall 5 B case 4A in the groove 6. Case 4A, 4
B is connected by bonding or ultrasonic welding.

The case 4A has a peripheral wall 5A as shown in FIG.
The lock lever 2 is formed separately from a part of the lock lever 2. A slit 7 is provided between the lock lever 2 and the peripheral wall 5A. The slit 7 is for making the lock lever 2 easily deformable. The lock lever 2 is formed at a height protruding higher than the peripheral wall 5B. Lock lever 2
Is located on the outer surface of the case 4 and has a claw portion 2A, and the upper end is an operation portion 2B. The height of the lock lever 2 is designed such that the operation portion 2B at the upper end is positioned on the surface of the case 4B or slightly lowered from the surface when the cases 4A and 4B are connected.

The claw 2A is elastically inserted into the recess 3A of the electric device 3 with the battery 1 mounted on the electric device 3, as shown in FIG.
So that it does not come off. The claw portion 2A is the battery pack 1
The lower surface is an inclined surface so as to be able to be smoothly inserted into the electric device 3, and the upper surface is a horizontal surface to prevent the electric device 3 from being detached while being attached to the electric device 3.

Further, the lock lever 2 is integrally formed with a folding rib 2C protruding from both sides. Rib for breaking 2C
Prevents the lock lever 2 from deforming outward by contacting the inner surface of the peripheral wall 5B of the case 4B. Rib for breaking 2C
Is L-shaped, protrudes from the back surface of the lock lever 2, and further protrudes from both sides.

The case 4B is provided with a recess 8 outside the peripheral wall 5B for guiding the lock lever 2 of the case 4A to be connected.
Is molded. On the inside of the peripheral wall 5B, there are provided ribs 2C for folding.
The recess 9 is provided by guiding a part thereof to be thin. In order to insert the breaking rib 2C into the recess 9, a part of the peripheral wall 5B is removed to form a connection hole. Further, the case 4B is formed with a stopper 10 located on the back surface of the lock lever 2. The stopper 10 is formed at a position where a gap is formed between the stopper 10 and the rear surface of the lock lever 2. This is for elastically deforming the lock lever 2 to the back.

Cases 4A and 4B shown in the above figures
Are connected to each other as shown in FIG. When the case is connected, the locking rib 2C of the lock lever 2 of the case 4A is located in the recess 8 of the peripheral wall 5B of the case 4B, and prevents the lock lever 2 from being bent to the outside of the case 4.

The stopper 10 secures a space for elastically deforming the lock lever 2 and, at the same time,
When B is elastically deformed more than necessary in the direction of arrow D in FIG. 4, the lock lever 2 is prevented from breaking by contacting the operation unit 2B. Therefore, the battery pack of this embodiment is
The rib 2C restricts the elastic deformation of the operation portion 2B in the direction of arrow C in FIG. 4, and the stopper 10 restricts the elastic deformation in the direction of arrow D in FIG. For this reason, even if the battery pack 1 is repeatedly attached to and detached from the electric equipment, the operating portion 2B of the lock lever 2 can be used for a long time without worrying about breakage.

[0022]

The battery pack of the present invention has features that it can be easily and easily and smoothly attached and detached to and from electric equipment, and that the lock lever can be effectively prevented from being broken. That is, instead of hardening the lock lever to prevent breakage of the battery pack of this invention, if it is forcibly bent outward, the lock lever is provided with a locking rib that contacts the inner surface of the case. Because there is. The folding rib prevents the lock lever from deforming to the outside of the case by colliding with the inner surface of the case. For this reason, even when a force that bends the lock lever forcibly acts while the battery pack is removed from the electric device, the battery pack does not break. Further, since the locking rib prevents the lock lever from being broken, the lock lever does not need to be hardened, and can be designed to be elastic so that it can be easily pushed and deformed by hand. For this reason, the elasticity of the lock lever can be designed to be ideal for attaching and detaching the battery pack. Therefore, a battery pack that can be smoothly attached and detached by pressing the operation unit can be obtained. In particular, a small battery pack has a small operating section, so it is difficult to push it hard. However, it has a feature that the lock lever is designed to be easily deformed and can be smoothly attached and detached. Furthermore, since the locking lever is provided with the arresting rib, the above-mentioned excellent features important for a detachable battery pack can be realized with an extremely simple structure.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional battery pack having a lock lever.

FIG. 2 is a perspective view showing a state where the battery pack of FIG. 1 is set in an electric device.

FIG. 3 is a cross-sectional view showing a portion where a lock lever is hooked on an electric device.

FIG. 4 is a perspective view of a case forming a lock lever.

FIG. 5 is a perspective view showing an embodiment of the battery pack of the present invention.

FIG. 6 is a plan view of one case formed with a lock lever.

FIG. 7 is a plan view of the case shown in FIG. 4;

FIG. 8 is a perspective view of a case in which a lock lever is not formed.

[Explanation of symbols]

1: Battery pack 2: Lock lever 2A: Claw part 2B: Operation part
2C: Breaking rib 3: Electric equipment 3A: Concave part 4: Case 5A, 5B: Peripheral wall 6: Groove 7: Slit 8: Concave 9: Recess 10: Stopper

Claims (1)

(57) [Scope of request for utility model registration] 1. A claw portion which can be elastically deformed outward from a case and which is caught by an electric device to be set.
(2A) and a lock battery (2) having an operating part (2B) for releasing the hook (2A) from being caught on the electric device, the lock lever (2) is operated by the operating part ( 2B) and forcibly push the claw (2A) toward the outside of the case (4).
A locking rib (2C) that comes into contact with the inner surface of the case (4), and the locking rib (2C) contacts the case (4) and locks the lock lever (2)
A battery pack having a lock lever, wherein the maximum deformation amount of the battery pack is limited.