JPH0992245A - Sub-battery locking structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent such a trouble that a sub-battery is replaced by mistake when no main battery is mounted and the memory is cleared in a terminal unit in which the sub-battery is mounted in addition to the main battery in order to hold the memory. SOLUTION: A double locking mechanism comprising a locking lever 2, a locking plate 3, and a locking pin 7 is formed in a sub-battery cover 6 so that the sub-battery cover 6 covering a sub-battery 5 is not removed when a main battery 1 is mounted. Such a trouble that the sub-battery 5 is removed when no main battery 1 is mounted and the memory is cleared is prevented. When the main battery 1 is mounted, the locking lever 2 is unlocked from the locking plate 3 against a coil spring 4, the locking pin 7 is unlocked against a plate spring 8, and the locking plate 3 is capable of rotating, the battery cover 6 and the sub-battery 5 can be removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sub-battery lock structure of a device having a main battery and a backup sub-battery in an information input / output terminal device such as a portable terminal having a memory function or an electronic notebook.

[0002]

2. Description of the Related Art Conventionally, the mounting structure of this type of sub battery is
Insert the back side of the device into a paragraph, insert the sub-battery into it, and attach the sub-battery cover with screws to fix the sub-battery from above, or attach and fix it with snap-fit claws that use the elasticity of plastic. It was In this configuration, the sub-battery and the main battery have no relation to each other's attachment / detachment state, and are mounted in independent positions,
By simply removing the sub-battery cover covering the sub-battery, the sub-battery can be removed and replaced freely and easily.

[0003]

The sub-battery has a role of holding a memory when the main battery is exhausted or removed for replacement. In the conventional sub-battery mounting structure described above, there is no relation to the main battery, so if the main battery is exhausted or the main battery is removed, the memory will be cleared There was a risk that it would be done. In order to avoid this, under the present circumstances, we are cautioned to replace the sub battery after confirming that the main battery is set, but there is a possibility that it may accidentally clear the memory. There was a problem.

An object of the present invention is to provide a sub-battery lock structure in which the memory is not likely to be cleared by the above-mentioned mistaken attachment / detachment of the battery.

[0005]

The lock structure for a sub-battery according to the present invention comprises a main battery, a sub-battery which is covered by a cover which holds a memory and can be opened and closed when the main battery is removed, and the main battery. A lock mechanism is provided, which is interlocked with the presence or absence of mounting, and which is doubly locked so that the sub battery cannot be removed when the main battery is not mounted.

In this sub-battery lock structure, the lock mechanism has a first lock piece for locking attachment / detachment of the sub-battery and a second lock piece for locking the opening / closing of the cover, and is a rotating lock. A plate, a lock lever that acts to lock or unlock the rotation of the lock plate in conjunction with the mounting or non-installation of the main battery, and a biasing member that biases the lock lever in a direction that locks the lock plate. One spring member and the position of the first lock piece that locks the sub battery and the position of the second lock piece that locks the cover are respectively regulated when the lock plate rotates when unlocking. It is preferably composed of a lock pin and a second spring member for urging the lock pin in a direction to lock the lock plate.

As described above, the lock structure of the sub-battery of the present invention is related to the state where the main battery is mounted or not, and the sub-battery is covered only when the main battery is mounted. It has a lock function that allows the sub battery cover to be removed. In addition, another lock function is provided to prevent the sub battery from coming off easily even when the sub battery is removed from the state where the sub battery cover is removed, and it also has a role of preventing the sub battery from falling off.

[0008]

Next, the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, in which (a)
Is a vertical cross-sectional view showing the overall configuration, (b) and (c) are plan views and cross-sectional views showing the sub-battery housing, and FIG. 2 is a plan view sequentially showing operations (a) to (c) of the lock plate. 3 is a vertical sectional view showing another embodiment of the present invention.

The configuration of the embodiment of the present invention is as follows. As shown in FIG. 1, the housing recess 11 of the housing 11
The main battery 1 housed in a and the sub battery 5 for holding a memory when the main battery 1 is removed for charging or replacement are housed in a housing recess 11b different from the position of the main battery 1. Has been done. The sub-battery 5 is covered with a sub-battery cover 6 that can be opened and closed. One side of the sub-battery cover 6 is inserted into the housing 11, and the opposite side is pressed and held by the lock piece 9 of the lock plate 3.

A substantially disk-shaped lock plate 3 is rotatably connected to a housing 11 of the main body, and locks the sub-battery cover 6 for opening and closing and the sub-battery 5 for attachment and detachment.
It has two lock pieces 9 and 10 and rotates. One end of the lock lever 2 is located on the side of the storage recess 11 of the main battery 1 and detects whether or not the main battery 1 is mounted. Works like you do. A coil spring 4 for biasing the lock plate 3 in a direction to lock the lock plate 3 is hooked on the lock lever 2 so that the lock lever 2 can be moved.

There are two lock pins 7, both of which are integrated with a leaf spring 8 which urges the lock plate 3 in a locking direction, and is attached to the housing 11 at a position where it can be inserted into the lock plate 3. The lock pin 7 allows the opening and closing of the sub battery cover 6 and the position of the two lock pieces 9 and 10 when the lock plate 3 is rotated when the lock plate 2 is unlocked by the lock lever 2 when the main battery 1 is mounted. The battery 5 is provided so as to be restricted to two removable positions.

In the present embodiment having such a configuration,
The initial state in which the main battery 1 is not mounted and the sub battery cover 6 is closed is as follows.

Since the main battery 1 is not mounted on the lock lever 2 which functions to lock the lock plate 3 in conjunction with the presence or absence of the main battery 1, the lock lever 2 enters the lock plate 3 and is locked by the urging force of the coil spring 4. are doing. Similarly, as shown in FIG. 2A, the lock pin 7 also enters the hole 3a of the lock plate 3 by the biasing force of the leaf spring 8 and performs the lock function. The sub battery cover 6 is locked by one lock piece 9 of the lock plate 3, and the sub battery 5 is also pressed and locked by the other lock piece 10 of the lock plate 3. As described above, the lock plate 3 is configured to be double-locked by the lock lever 2 and the lock pin 7.

Next, the operation of removing the sub battery 5 after mounting the main battery 1 will be described.

When the main battery 1 is set in the housing recess 11a of the housing 11, the main battery 1 pushes one end of the lock lever 2 against the coil spring 4 in the arrow A direction. As a result, the tip portion of the lock lever 2 is disengaged from the lock plate 3, and the lock of the first stage of the lock plate 3 is released. When the main battery 1 is set, the lock lever 2 unlocks the first stage of the lock plate 3, but to remove the sub battery cover 6 covering the sub battery 5, the lock plate 3 is rotated. Only then can it be possible.

To rotate the lock plate 3, the second
It is necessary to push down the lock pin 7 which is the locking means of the step and remove it from the lock plate 3. The lock pin 7 is moved by the biasing force of the leaf spring 8. As shown in FIG. 2, the lock plate 3 rotates in the direction of arrow B in two steps, and the lock piece 9 holding the sub-battery cover 6 at the first-step rotation position shown in FIG. The battery cover 6 can be removed.

At this first-step pivot position, the other lock pin 7 enters the hole 3a of the lock plate 3 and the lock plate 3 is locked again. At this position, the other lock piece 10 of the lock plate 3 still holds the sub-battery 5. Similarly, when the lock pin 7 is pushed down and the lock plate 3 is rotated to the position of the second stage shown in FIG. 2C, the lock piece 10 of the lock plate 3 is disengaged from the sub battery 5 and the sub battery 5 is removed. It can be removed.

In this way, the sub-battery 5 can be removed and replaced only after the main battery 1 is mounted. In this state, the new sub battery 5 for replacement is housed in the housing recess 11b, and the lock plate 3 is returned to the position shown in FIG. 2 (a) against the lock pin 7 and the leaf spring 8. As a result, both the main battery 1 and the sub battery 5 are mounted, and the normal use state is achieved. Here, if only the main battery 1 is removed, the above-mentioned initial state is obtained.

FIG. 3 shows another embodiment of the present invention. A lock lever 12 having a structure different from that of the lock lever 2 in the above-described embodiment is provided, and the lock lever 1 is arranged in a direction perpendicular to the setting direction of the main battery 1 (direction of arrow A).
2 moves against the biasing force of the coil spring 4 to lock or unlock the lock plate 3 in the first step by the lock lever 12. Lock pin 7
The second-stage locking action of the leaf spring 8 and the leaf spring 8 is similar to that in the above-described embodiment.

[0021]

As described above, according to the present invention, the state of whether or not the main battery is mounted on the device is related to the movement of the sub battery cover and the lock plate that holds and fixes the sub battery. By using the double lock mechanism that can not move the lock plate when the battery is not installed, it becomes impossible to remove and replace the sub battery when the main battery is not installed,
This has the effect of eliminating the problem of clearing memory data by mistake.

As a secondary effect, the situation in which the sub-battery is accidentally dropped immediately after the sub-battery cover is removed can be eliminated by the two-stage rotation means of the lock plate.

[Brief description of drawings]

1A and 1B show an embodiment of the present invention, in which FIG. 1A is a vertical cross-sectional view showing the overall configuration, and FIGS. 1B and 1C are a plan view and a cross-sectional view showing a sub battery storage portion.

FIG. 2 is a plan view sequentially showing the operation of the lock plate of this embodiment in (a) to (c).

FIG. 3 is a longitudinal sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Main Battery 2, 12 Lock Lever 3 Lock Plate 4 Coil Spring 5 Sub Battery 6 Sub Battery Cover 7 Lock Pin 8 Leaf Spring 9, 10 Lock Piece 11 Housing 11a, 11b Storage Recess

Claims (4)

[Claims] 1. A main battery, a sub battery that holds a memory when the main battery is removed, and is covered by an openable / closable cover, and a state in which the main battery is not mounted in association with whether the main battery is mounted or not. Then, a lock structure for the sub-battery is provided with a lock mechanism for double locking so that the sub-battery cannot be removed. 2. The lock mechanism, wherein the lock mechanism has a first lock piece for locking attachment / detachment of the sub-battery and a second lock piece for locking the opening / closing of the cover; A lock lever that acts to lock or unlock the rotation of the lock plate in conjunction with the presence or absence of mounting, and a first spring member that biases the lock lever in a direction that locks the lock plate,
A lock pin that restricts the position of the first lock piece that locks the sub battery and the position of the second lock piece that locks the cover when the lock plate rotates when unlocking, and the lock plate. The sub-battery lock structure according to claim 1, further comprising a second spring member that biases the lock pin in a locking direction. 3. The lock structure for a sub battery according to claim 2, wherein the first spring member is a tension coil spring. 4. The sub-battery lock structure according to claim 2, wherein the second spring member is a leaf spring.