JPH0132686Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This proposal relates to a battery storage device used in watches and the like.

[Conventional technology]

Previously, there were devices that made it possible to cut off the conduction of the battery while the battery was stored without installing a special switch, such as the one that inserted insulating paper between the contact piece and the battery, and the one that No. 57-127474 is known in which a contact is provided on the battery cover so that it rotates concentrically with the battery cover, and the contact is brought into contact with and separated from the contact piece by rotating the battery cover.

[Problem to be solved]

Among the conventional technologies mentioned above, those that use insulating paper require inserting a battery during the product manufacturing process and checking its operation. Therefore, in order to insert insulating paper, the battery must be removed, the insulating paper is inserted, and then the battery is reinserted. It was very troublesome to assemble because batteries had to be inserted. In addition, in devices that cut off conduction by rotating the battery cover, the contacts slide with a certain contact pressure against the contact pieces during rotation operation, so the contacts and contacts are easily damaged, and minute currents such as those used in watches, etc. However, the contact resistance was high and there was a risk of poor continuity.

The purpose of this proposal is to provide a battery storage device that is easy to assemble and has less risk of poor contact.

[Means to solve the problem]

In order to solve the above problem, the feature of this proposal is that the battery cover, which is attached and removed by rotation in the battery insertion slot, is provided with a positioning part that positions the battery at a position eccentric from the center of rotation of the battery cover. The battery lid is placed at a first rotational position where the battery and a second contact piece that can be brought into contact with the outer peripheral surface of the battery are in contact with the insertion opening, and at a second position where the battery is away from the first rotational position. A click means is provided, and the battery cover is provided with an abutment member for separating the second contact piece from the battery when the battery cover is in the second rotational position.

[Effect]

Since the battery is positioned eccentrically from the center of rotation of the battery lid by the positioning part, when the battery lid is rotated, the battery rotates eccentrically, and in the first rotational position, the outer peripheral surface of the battery and the second contact piece At a second rotational position where the battery and the contact piece are separated from the first rotational position, the second contact piece abuts the contact member and the battery and the contact piece are separated.

〔Example〕

Hereinafter, one embodiment of the present proposal will be described in detail.

In FIGS. 1 and 2, a battery insertion hole 2 is provided on the back side of a frame 1 of a watch or the like, and the inside is a storage space for a battery 3 having a substantially cylindrical shape. The battery insertion hole 2 has a circular shape, and a collar-shaped bayonet receiving portion 4 is provided around the circumference. The bayonet receiving portion 4 is formed with two notches 4a, 4a, and taper surfaces 4b, 4b from the outer surface toward the notches. Also, the positioning click part 4 is on the inner side.
c, 4c, 4d, 4d are provided protrudingly. A first contact piece 5 is located at the back of the battery insertion hole 2 and is in contact with a cathode on one end surface of the battery 3, and the first contact piece is fixed to a printed circuit board 6. A protrusion 7 is formed around the first contact piece 5, and when the battery 3 is strongly pushed in, the battery 3 comes into contact with the first contact piece 5, and the first contact piece 5 can be retracted. Reference numeral 8 denotes a second contact piece that can be placed in contact with the anode on the outer peripheral surface of the battery 3, and is fixed to the printed circuit board 6. Numerals 9 and 9 are regulating pillars that regulate the position of the battery 3 when it is inserted. Indicators 10a, 10b, and 10c indicating the OPEN position, ON position, and OFF position are provided on the outer surface of the outer periphery of the battery insertion slot 2. Next, the battery cover 11 will be explained with reference to FIGS. 3 to 7. The battery cover 11 is removably attached to the battery insertion hole 2 by rotation.
It has an outer diameter corresponding to the inner diameter of the lid, and the center of rotation is the lid center 11a. Bayonet claws 12, 12 which engage with the bayonet receiving portion 4 are protruded from the outer periphery of the battery cover 11. The bayonet pawls 12, 12 can be engaged with the inner surface of the bayonet receiving part 4 through the notches 4a, 4a, and grooves 12a, 12a are formed in which the click parts 4c, 4c, 4d, 4d engage. A positioning portion 13 for positioning the battery 3 is provided on the inner surface of the battery lid 11. The positioning part 13 is a circumferential wall provided corresponding to the outer diameter of the battery 3 around a battery center 13a eccentric from the lid center 11a, and has a length of more than half of the outer circumference of the battery 3. . A chamfered portion 13 is provided at the inner peripheral end of the positioning portion 13.
b is formed, making it easier to position the battery 3. An abutment member 14 projects from the inner surface of the battery cover 11, and this abutment member can abut and engage with the second contact piece 8 when the battery cover 11 is rotated. The outer surface of the battery cover 11 is provided with a recess 11b into which a coin or the like is inserted in order to rotate the battery cover 11, and an index 11c.

Next, with reference to Figures 1 to 3 and Figures 8 to 10,
Explain the operation. When the battery cover 11 is removed and the battery 3 is inserted into the battery insertion hole 2, the battery 3 is inserted into the position shown by the two-dot chain line in FIGS. Ru. In this position, the indicator 11c of the battery cover 11 is aligned with the OPEN position indicator 10a, and the battery cover 11 is fitted into the battery insertion hole 2. At this time, the positioning part 13 coincides with the battery 3, and the battery 3 is positioned on the battery cover 11.
Also, at this time, the bayonet pawls 12, 12 correspond to the tapered surfaces 4b, 4b of the bayonet receiving portion 4. This state is the state shown in FIG. 8, and the battery 3 is temporarily electrically connected to the first contact piece 5 and the second contact piece 8.

When a coin or the like is hung in the recess 11b of the battery cover 11 and rotated clockwise, the bayonet claws 12, 12
descends along the tapered surfaces 4b, 4b and is located within the notches 4a, 4b. As a result, the outer surface of the frame 1 and the outer surface of the battery cover 11 are aligned. Further, it continues to rotate clockwise, and from the OPEN position indicator 10a, the
Rotate 65 degrees and set the index 11c as shown in Figure 8.
Align with ON position index 10b. This position is the first
is the rotational position of

Due to this rotation, the battery 3 rotates eccentrically and moves in the direction of the second contact piece 8, so that at the first rotation position, the battery 3
As shown, the second contact piece 8 is bent counterclockwise, away from the protrusion 14, and contacts the circumferential surface of the battery 2 with appropriate contact pressure. Further, the battery 3 is moved to the back by the battery cover 11, and the first contact piece 5 also contacts one end surface of the battery 3 with an appropriate contact pressure. In this state, the watch operates normally.

When rotated further clockwise by about 45 degrees from the first rotation position, the index 11c becomes as shown in Figure 10.
This corresponds to the OFF position index 10c. This position is the second rotational position. Due to this rotation, the battery 3 moves in a direction away from the second contact piece 8, and at the second rotational position, the contact member 14 abuts and engages with the second contact piece 8 to prevent it from returning toward the battery. , the circumferential surface of the battery 3 and the second contact piece 8 are separated from each other to interrupt electrical continuity. In this way, since the contact member 14 that has moved prevents the battery 3 from escaping and the second contact piece 8 from following, the second contact piece 8 does not have to be forcibly bent in the direction away from the battery 3, and the spring force In addition to preventing sagging,
The spring force of the second contact piece 8 can be made strong and the stroke can be made small, and the contact between the battery 3 and the second contact piece 8 can be ensured, and separation can also be ensured. Furthermore, since the second contact piece 8 and the battery 3 are brought into contact and separated using eccentric rotation of the battery 3, there is less risk of the second contact piece 8 being scraped during rotation and increasing the contact resistance.

When the watch is not operated or when it is packaged, the battery cover 11 is placed in the second rotational position shown in Figure 10. When the watch is operated, the battery cover 11 is rotated counterclockwise approximately 45 degrees to the first rotation position, and the second contact piece 8 is attached to the inner peripheral surface of the battery 3 as shown in FIG. Make contact and establish continuity.

When replacing the battery 3, the battery cover 11 is rotated approximately 65 degrees counterclockwise from the first rotation position.
This rotation causes the bayonet claws 12, 12 to rise on the tapered surfaces 4b, 4b, allowing the battery cover 11 to be removed. After this, all you have to do is take out the battery 3.

Although an example of an inner circumferential wall is shown as the positioning portion of the battery lid, the positioning may be performed using, for example, multiple pillars, or the battery may be held in the battery lid.

〔effect〕

As described above, according to the present proposal, since the battery is rotated eccentrically and the second contact piece is prevented from returning by the abutting member, it is possible to prevent the spring force of the second contact piece from weakening. In addition, it is possible to securely contact the battery and the contact piece with a large contact pressure, and also to ensure the separation between the contact piece and the battery, and furthermore, it is possible to prevent the contact piece from coming off.It has great practical effects. It is significant.

[Brief explanation of the drawing]

The drawings show one embodiment of the present plan, with Fig. 1 being a front view with the battery cover removed, and Fig. 2 being a view of Fig. 1-
Line sectional view, Figure 3 is a left side view of the battery cover in the installed state, Figure 4 is a front view of the battery cover, Figure 5 is its right side view, Figure 6 is its rear view, and Figure 7 is the Fig. 8 is a front view showing the installation of the battery cover, Fig. 9 is a front view showing the battery cover in the first rotation position, and Fig. 10 is a front view showing the battery cover in the second rotation position. FIG. 1...Frame body, 2...Battery insertion slot, 3...Battery,
4... Bayonet mechanism (bayonet receiver), 4C,
4d...Click part (click means), 5...First contact piece, 8...Second contact piece, 11...Battery cover,
12...bayonet mechanism (bayonet claw), 12
a... Groove portion (click means), 13... Positioning portion, 14... Contact member.

Claims (1)

[Scope of Claim for Utility Model Registration] A frame body provided with a battery insertion slot; a battery cover that is detachably attached to the battery insertion slot by rotation via a bayonet mechanism; a positioning part that positions the battery at a position eccentric from the center of rotation of the battery lid; a first contact piece that contacts one end surface of the battery; a second contact piece that can contact the outer peripheral surface of the battery; The battery cover and the battery insertion slot have a first rotational position where the battery and the second contact piece are in contact with each other;
A click means for clicking the battery lid is provided at a second rotational position where the second contact piece and the battery separate from the first rotational position, and the battery lid is provided with a click means for clicking the battery lid. 2. A battery storage device characterized in that a contact member is provided that separates the second contact piece from the battery when the second contact piece is in the second rotational position.