JP2009021059A - Battery housing unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems in which, when a battery is reversely connected due to wrong insertion, the battery is charged to cause liquid leakage resulting in abnormal operation of an electronic device itself, and, even when the battery is normally inserted, the battery is unsteadily fixed on the electronic device itself causing an inoperative state of the electronic device due to nonconduction of a battery. <P>SOLUTION: A slide type battery lid opening/closing device includes a battery lid structured so as not to engage with a battery housing part when the battery is wrongly inserted, can inform a user of the wrong insertion, and can prevent conduction of the battery. In other case when the battery is normally inserted, pressing force is applied on the battery by a rib provided on the battery lid to fix the battery securely in the battery housing part, and a conductive state of the battery is secured. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a battery storage unit having a slidable battery lid, and more particularly to a battery storage unit for preventing overdischarge due to erroneous insertion of a battery.

Conventionally, in battery-operated electronic devices such as portable audio players and mobile phones, battery storage has a structure for notifying the user of incorrect insertion when the battery polarity is incorrectly inserted when replacing the battery. The unit is known. As such a battery storage unit, there is an invention described in Patent Document 1. According to the present invention, the battery holder part is integrally formed with the battery lid positioned in the gap around the positive terminal and negative terminal connection parts of the dry batteries or in a separate rib while the polarities of the dry batteries are stored in the normal orientation. A structure of a battery storage unit in which is arranged is disclosed.

Patent Document 1 will be described with reference to FIG. First, (a) of FIG. 9 shows a diagram in which the battery is normally inserted. When the batteries 903 and 904 are correctly inserted into the battery storage unit 900, the protrusion 902 provided on the battery cover 901 has a gap L corresponding to the protrusion of the positive terminal at the contact point between the positive terminal of the battery 903 and the negative terminal of the battery 904. I can do it. Next, when the battery housing portion 900 is closed with the battery lid 901, the protrusion 902 provided on the battery lid 901 enters the gap L, and the battery lid 901 is engaged with the opening 905 of the battery housing portion 900. Become. Next, FIG. 9B shows a diagram in which the battery is not inserted normally. When the battery 903 and the battery 904 are mistakenly inserted into the battery storage unit 900 so that the negatives of both batteries are in contact with each other, the gap L cannot be formed. Even if the opening 905 is to be closed, the protrusion 902 of the battery lid 901 prevents the engagement so that the battery lid 901 cannot be closed.
Japanese Utility Model 1-174852

In the technology described in Patent Document 1, it is possible to notify the user of erroneous insertion of the battery by not closing the battery lid, but the battery is configured to be conductive in the state of being erroneously inserted. When the battery is erroneously inserted and reversely connected as shown in FIG. 9B, the battery is overdischarged, an overcurrent flows through the electronic device body, damages the electronic element, and the battery itself leaks. Has occurred, leading to abnormal operation of the electronic device main body. Moreover, even if the battery is normally inserted, the battery cannot be securely fixed to the electronic device main body, and there remains a problem that the electronic device cannot be operated due to the non-conduction of the battery.

Therefore, the present invention informs the user that the battery is erroneously inserted by not closing the battery lid, and when it is erroneously inserted, the battery is prevented from conducting and the battery has been correctly inserted. In some cases, an object of the present invention is to provide a battery lid opening / closing device that can securely fix a battery to a battery housing.

In order to achieve the above object, a battery housing unit of an electronic device that dissipates and detaches a battery lid by rotational movement and slide movement, wherein the battery lid is constituted by a metal elastic body for a positive electrode and a negative electrode, respectively. An abutment portion for the battery, a battery lid side terminal having a structure for conducting between the corresponding contact portions, an anti-slip portion for an operation finger made uneven in a direction perpendicular to the sliding direction on the upper surface portion of the battery lid, A battery that supports the battery lid that is urged by a coil spring in a vertically upward direction so as to be rotatable about the vicinity of the rear end portion of the battery lid, and four claw portions for sliding and engaging with the electronic device body A battery support unit, and the battery housing unit includes a main body side support part that fits the battery cover support part of the battery cover to form a hinge, and a battery positive electrode and a metal elastic body, respectively. A contact portion for the negative electrode, A main body side terminal having a structure for conducting between the contact portions, and four lock portions for engaging the four claw portions of the battery lid, respectively, and the battery lid is operated in the storage operation of the battery lid. A vertically open state in which the lid is opened vertically with respect to the main body, a horizontal open state reached by rotational movement from the vertical open state, a slide movement state in which sliding is performed from the horizontal open state, and the slide movement state are terminated When the battery cover approaches the closed state in the sliding movement state, the battery cover contact part and the main body side contact part come into contact with each other, and the contact causes the battery cover contact part to come into the closed state. The abutting portion receives an urging force from the main body side abutting portion in the sliding movement state direction, and when the battery lid further moves to the closed state side against the urging force, both abutting portions become conductive, 4 nails and Each of the four lock portions is engaged, and the battery lid has a rib protruding in the battery insertion direction, and when a battery is inserted into the battery storage unit with a normal polarity, In the closed state after sliding from the sliding state, the rib presses the battery toward the battery storage unit, and the claw portion and the lock portion engage with each other. When inserted, the claw portion and the lock portion are configured not to be engaged even if they slide from the sliding movement state and approach the closed state.

The battery housing unit, wherein the rib moves from the sliding state to the closed state and simultaneously presses the battery against the battery housing unit, and gradually presses the battery against the battery housing unit according to the sliding amount. The battery is configured to come into contact with the battery at a predetermined angle so as to be larger.

In the battery housing unit, the rib is integrally formed with the battery lid so as to have elasticity, and is arranged on the battery lid.

In the battery housing unit, the contact portion is integrally formed with the battery lid and disposed on the battery lid.

The battery storage unit has two or more of the claw portion and the lock portion.

By configuring as described above, when the battery is normally inserted, the battery cover is slid to gradually press the battery against the battery housing unit, and when the battery is erroneously inserted, the battery cover and the battery are inserted. The storage unit does not engage, prevents reverse connection of the battery, and acts to notify the user that the battery is erroneously inserted by not closing the battery cover.

According to the first aspect of the present invention, in the slide type battery lid opening / closing device, when the battery is mistakenly inserted, the battery lid is configured not to be engaged with the battery housing unit, and the user is notified of the mistaken insertion. Is possible. Also, when the battery is inserted normally, press the battery with a rib provided on the battery lid to securely fix the battery in the battery storage unit and to ensure the battery conduction state. Is possible.

According to the invention of claim 2, by giving the rib a predetermined angle, it is possible to start the slide regardless of the variation in the height of the rib caused by the molding of the battery lid or the molding variation of the battery housing unit. It can be possible or smooth. In addition, it is possible to gradually increase the pressing force on the battery according to the distance of the slide, and the user who slides can confirm that the battery is surely stored in the battery housing unit by feeling the repulsive force against the pressing force. It becomes possible.

According to the third aspect of the invention, by integrally molding the rib of the battery lid with the battery lid, it is possible to improve the production efficiency of the battery lid and reduce the production cost.

According to the fourth aspect of the present invention, it is possible to improve the production efficiency of the battery lid and lower the production cost by integrally molding the contact portion with the battery lid side terminal.

According to the fifth aspect of the present invention, it is possible to securely fix the battery lid and the battery storage unit by providing two or more engaging portions.

FIG. 1 is a perspective view of an electronic device main body according to the present invention. A battery housing unit 200 to be described later is formed on the upper surface of the electronic device main body 10, and a battery lid 100 is provided in the opening. The battery lid 100 can open and close the opening of the battery storage unit 200, and FIG. 1A shows a state of a vertically open state A in which the battery lid 100 is opened vertically with respect to the electronic device main body 10. 1B shows a state of a horizontal open posture B in which the battery cover 100 is tilted from the vertical open state A and the battery cover is horizontal with respect to the electronic device main body 10. FIG. 1C shows a slide movement state C in which the battery cover 100 is shifted from the horizontal open state B to the side. Further, the state in which the battery cover 100 is further closed from the slide movement state C becomes the closed state D. In addition, an uneven slip prevention portion 101 is provided on the upper surface of the battery lid 100 in order to reliably transmit a pressing force by a user's finger or the like.

The electronic device main body 10 of the present invention is configured such that a click feeling is generated when the battery cover 100 shifts from the closed state D to the slide movement state C. Conversely, when the battery cover 100 shifts from the slide movement state C to the closed state D, a click feeling is generated. Here, the click feeling means that when the battery cover 100 is moved in a certain direction, a resistance is generated in a direction opposite to the direction and a user's feeling due to the resistance.

FIG. 2 is a perspective view of the battery storage unit 200. A battery can be stored by attaching the battery storage unit 200 to the upper surface of the electronic device main body 10. The battery storage unit 200 is provided with battery storage portions 201a and 201b. On the opening side of the battery storage portions 201a and 201b, the main body side contact portion 202, the main body side support portions 204a and 204b, and the lock portions 206a to 206d. Is provided. The battery storage portions 201a and 201b can store batteries, and the batteries to be stored can be primary batteries or secondary batteries. Main body side terminals 207a and 207b are provided at the bottoms of the battery storage portions 201a and 201b, respectively. Further, battery receiving portions 205a and 205b for receiving the battery are provided near both ends of the positive terminal 207a of the main body side terminal.

On the opening side of the battery storage unit 200, a main body side contact portion 202 that contacts a contact portion 302 of the battery lid 100 described later is provided. The main body side abutting portion 202 can abut on the abutting portion 302 in the middle of the sliding movement of the battery lid 100.

The main body side support portions 204 a and 204 b are long holes for supporting the battery lid 100. A battery lid support portion 304 (described later) attached to the battery lid 100 is inserted into the main body side support portion 204. Since the main body side support portion 204 is formed in a long hole, the battery lid 100 is slidably supported.

The lock portions 206a to 206d are engagement members for locking the battery lid 100 by engaging with claws 306a to 306d provided at the front end portion and the rear end portion of the battery lid 100, which will be described later. The lock portions 206a to 206d engage with the claw portions 306a to 306d when the battery cover 100 moves from the slide movement state C to the closed state D, respectively.

FIG. 3 is a perspective view of the battery lid 100 as seen from the back surface. The battery lid 100 is provided with the contact portion 302 and the battery lid support portion 304 on the rear end side, the battery lid side terminals 307a and 307b on the back surface, and the claw portions 306a to 306d on the front end side and the rear end side. .

The abutting portion 302 is a projecting protrusion formed on a rear end side of the back surface of the battery lid 100, which is formed of a metal elastic material, has a spring arm portion 303, is designed to be shared with the battery terminal. . Further, the contact portion 302 is provided on the back surface of the battery lid 100 and the position thereof is set in the vicinity of the battery lid support portion 304. The shape of the protrusion of the contact portion 302 has a substantially triangular cross section. In this shape, the cross section of the portion in contact with the main body side contact portion 202 may be substantially triangular, and may not be triangular as a whole. Further, the shape of the protrusion may be pointed, rounded, or have a slightly flat portion.

The contact portion 302 is supported by one end of the spring arm portion 303. The other end of the spring arm portion 303 is fixed to the battery lid 100. The spring arm 303 is an elastic body that can be elastically deformed in the battery insertion / removal direction. Therefore, the contact portion 302 can be displaced in the battery insertion / removal direction. In this embodiment, the contact portion 302 and the battery terminals 307a and b are integrally formed of a metallic elastic material because the battery terminals 307a and b need to have electrical conductivity, and the contact portion 302 This is because it is possible to satisfy the respective characteristics required by both parts, that is, that an elastic force is required, and furthermore, the manufacturing process can be simplified. Note that the spring arm portion 303 may be formed of resin. In this case, instead of being integrally molded with the battery terminals 307a and 307b, if it is integrally molded with the battery lid 100, the manufacturing process is similarly simplified. is there.

Next, the battery lid support portion 304 is made of metal and processed into a rod shape, and is press-fitted into the rear end side of the battery lid 100. Both ends of the battery lid support portion 304 protrude from the side portions of the battery lid 100. The battery lid support portion 304 is inserted into the main body side support portions 204a and 204b of the battery storage portions 201a and 201b to form a hinge so that the battery lid 100 can rotate and slide. In addition, a coil spring 301 is provided at one end of the battery lid support portion 304, and when the battery lid support portion 304 is inserted into the main body side support portions 204a and 204b, the battery lid 100 is attached to the electronic device main body by the coil spring 301. Even when the user is released in the vertical direction, the vertical open state A is maintained.

Next, the claw portions 306 a and 306 d are provided at the tip of the battery lid 100. The claw portions 306 b and 306 c are provided at the rear end portion of the battery lid 100. The claw portions 306a to 306d are engaging members that engage with the lock portions 206a to 206d provided in the battery storage unit 200, respectively.
The battery lid side terminals 307a and 307b are terminals that are in electrical and mechanical contact with the terminals of the battery.

The opening / closing operation | movement of the battery cover 100 is demonstrated about the electronic device main body 10 comprised as mentioned above.

Next, the operation when shifting from the horizontal open state B to the closed state D will be described.

4 to 6 are enlarged cross-sectional views in the vicinity of the battery support portion 304 when the battery is normally inserted and from the horizontal open state B to the closed state D. FIG. 4 is a cross-sectional view in the horizontal open state B, FIG. 5 is a cross-sectional view in the slide movement state C, and FIG. 6 is a cross-sectional view in the closed state D.

As shown in FIG. 4, when the user slides the battery cover 100 in the rear end direction (arrow X direction in the figure) in a state where the battery cover 100 is in the horizontal open state B, as shown in FIG. The support unit 304 slides in the main body side support unit 204 in the rear end direction (the arrow X direction in the figure).

In the state shown in FIG. 4, the contact portion 302 does not contact the battery storage unit side contact portion 202, but when they enter the state shown in FIG. 5, they start to contact each other. When the contact portion 302 starts to contact the battery storage unit side contact portion 202, the contact portion 302 pushes down the main body side contact portion 202, and the battery lid 100 is slidably moved by the urging force of the spring arm portion 303. Repulsive force is applied in the direction of C (arrow Y direction in the figure).

When the user operates from this state to move the battery cover 100 in the direction in which the battery cover 100 is in the closed state D (arrow X direction in the figure), the contact portion 302 resists the repulsive force received from the main body side contact portion 202. , Slide in the direction of arrow X.

When the user further slides the battery cover 100 against the repulsive force in the closed state D side (in the direction of arrow X in the figure), the apex of the protrusion of the contact portion 302 is the upper surface of the main body side contact portion 202. The state shown in FIG. 5 is obtained.

Further, when the user slides the battery cover 100 in the arrow X direction, the apex of the contact portion 302 gets over the upper surface of the main body side contact portion 202. At this time, since the repulsive force (force in the direction in which the battery cover 100 is in the sliding movement state C) received by the contact part 302 from the main body side contact part 202 disappears, the user feels a click feeling from the battery cover 100. Then, the protrusion of the contact portion 302 is fixed at a position lower than the upper surface of the main body side contact portion 202 as shown in FIG. Here, since the positive terminal and the negative terminal of the battery are respectively received, they contact the battery cover side terminals 307a and 307b provided on the battery cover 300, and the battery becomes conductive.

Next, FIGS. 7A to 7C are enlarged views of the vicinity of the battery lid support portion when the battery lid 100 is in the posture between the sliding movement state C and the closed state D in each case where the battery is abnormally inserted. A cross-sectional view is shown.

First, the state of FIG. Unlike the normal battery insertion state shown in FIGS. 4 to 6, of the two batteries, a battery that is electrically connected by the battery lid side terminal 307 b and the body side terminal 207 b is inserted with the positive and negative polarity reversed. As shown in FIG. 6, when the battery is normally inserted, the battery inserted near the rib 308 is designed so that the positive terminal is normally inserted, and the battery lid is A gap is formed between the upper surface of the lid 100 and the base of the positive terminal protrusion of the battery. Since the rib 308 is configured to have substantially the same height as the gap, the battery lid 100 can be slid from the slide movement state C to the closed state D.

However, as shown in FIG. 7A, when the battery near the rib 308 is inserted with the negative terminal on the upper side, the gap disappears, so that the rib 308 contacts the battery, and the battery cover 100 is the rib. It is pushed upward by the height of 308. For this reason, the nail | claw part 306a of the battery cover 100 is also lifted upwards. Therefore, since it does not become the same height as the lock part 206a of the battery storage unit 200 engaged with the claw part 306a of the battery cover 100, even if the battery cover 100 is slid from the state of FIG. Since the height of the lock portion 206a of the battery storage unit 200 does not match, the battery lid 100 and the battery storage unit cannot shift to the closed state D because they cannot be engaged.

Further, the battery lid side terminals 307 a and 307 b are also pushed upward by the height of the rib 308. For this reason, since neither the battery lid side terminal 307a nor 307b is in contact with the battery, the batteries do not become conductive.

Next, in FIG. 7B, both of the two batteries are inserted with opposite positive and negative polarities. In this case, since the battery to be electrically connected by the battery lid side terminal 307a and the body side terminal 207a is inserted with the negative terminal of the battery placed at the bottom of the battery storage unit 200, the negative side bottom surface of the battery is the battery receiving part 205a. , B are not inserted below the height of the battery receiving portion. Therefore, since the battery is higher than the case of normal insertion, the battery lid side terminal 307a is pushed up to push up the battery lid side terminal 307a, so that the battery lid 100 cannot be shifted to the horizontal open state B as shown in FIG. Become.

Next, in FIG. 7C, two batteries are both inserted with the positive electrode facing upward. Also in this case, as in FIG. 7B, the battery to be conducted by the battery lid side terminal 307a and the battery storage unit side terminal 207a is inserted with the negative terminal of the battery being the bottom of the battery storage unit 200. Therefore, the negative side bottom surface of the battery is not inserted below the height of the battery receiving part by the battery receiving parts 205a and 205b. Therefore, since the battery is higher than the case of normal insertion, the battery lid side terminal 307a is pushed up, so that the battery lid 100 cannot be shifted to the horizontal open state B as shown in FIG. Become.

As described above, when the user mistakenly inserts the battery, the battery lid 100 is configured not to be closed, thereby preventing battery conduction and preventing overdischarge due to reverse connection. . In addition, since the battery cover is not closed, it is possible to notify the user that the battery is erroneously inserted.

Next, FIG. 8 shows an enlarged cross-sectional view of the vicinity of the rib when the battery lid is in the closed position C when the battery is normally inserted. A pressing force F acts downward at the contact point between the rib 308 and the battery. For this reason, the battery is fixed to the battery housing unit 200 without rattling, and it is possible to ensure the conduction by reliably pressing the battery electrical contact. In addition, the lower end surface has a predetermined angle θ with respect to the horizontal direction. With this predetermined angle θ, in the sliding posture B, there are few contact points between the rib 308 and the battery, and the pressing force F is small, so that it is easy to start sliding. Further, as the slide is advanced, the contact point between the rib 308 and the battery increases, and the pressing force F increases accordingly, so that the battery can be reliably fixed in the closed posture A.

As described above, by giving the rib 308 a predetermined angle θ, it is possible to absorb an error when the rib 308 is molded. For example, when the predetermined angle θ is zero, the height of the rib 308 is reduced due to the molding error of the rib 308, and when a gap is generated between the rib 308 and the battery, the battery is inside the battery housing unit 200. In such a case, there is a possibility that it is not securely fixed and conduction is not achieved. In addition, when the user carries the electronic device main body 10 and continuously receives vibrations, the battery storage unit 200 may be rattled and the battery storage unit 200 may be damaged. is there.

As described above, according to the present invention, in the sliding battery lid opening / closing device, if the battery is mistakenly inserted, the user is notified of the mistaken insertion, and if the battery is normally inserted, the battery is securely inserted into the battery housing unit. It can be fixed.

In the present embodiment, the battery storage unit 200 is first configured and fixed to the electronic device main body 10. However, the present invention is not limited to this. For example, the battery storage unit 201 and the main body are directly connected to the electronic device main body 10. A side contact portion 202 may be provided.

In the present embodiment, the battery support portion 304 processed with metal is press-fitted into the battery lid 100. However, the present invention is not limited to this. For example, the battery lid 100 and the battery support portion 304 may be integrally formed of resin. Good. By configuring in this way, the press-fitting process of the battery support 304 can be omitted, so that the manufacturing process of the battery lid 100 can be simplified.

Moreover, in this Embodiment, although the two battery accommodating parts 201 were provided, it is not restricted to this number. For example, the number may be one or three.

Moreover, in this Embodiment, although the battery accommodating part 201 was set as the structure provided in the upper surface of the electronic device main body 10, you may make it provide not only in this but in a bottom face, a side surface, etc.

In the present embodiment, the battery is mounted vertically in the battery storage unit 201. However, the present invention is not limited to this, and the battery may be mounted horizontally.

Further, in the present embodiment, the battery type is AA type or AA type. However, the battery type is not limited to this, but may be a box type or a shape designed exclusively for each electronic device.

In this embodiment, the battery receiving portions are arranged at two locations near both ends of the battery storage unit side terminal. However, if the shape surrounding the battery storage unit side terminal is a donut shape, the battery is received more firmly. It becomes possible. Any number and shape can be applied as long as they can receive a battery.

The present invention can be applied to an electronic device having a battery storage unit, and is suitable for portable electronic devices such as a portable audio player and a mobile phone terminal.

(A) In the electronic device according to the present invention, a perspective view seen from the upper surface side of the vertically open state A in which the battery lid is opened vertically with respect to the electronic device main body is represented. (B) The electronic device according to the present invention FIG. 2C is a perspective view of the battery cover when viewed from the upper surface side in the horizontal open state B, which is a state in which the battery cover is tilted horizontally from the vertical open posture A. (c) In the electronic device according to the present invention, (D) In the electronic device according to the present invention, the battery cover is slid from the sliding movement state C to the end in the closing direction. The perspective view seen from the upper surface side of the closed state D with the battery lid closed The perspective view of the battery storage unit concerning this invention is represented. The perspective view seen from the back surface of the battery cover concerning this invention is represented. In the electronic device according to the present invention, when the battery is normally inserted, an enlarged cross-sectional view of the vicinity of the battery lid support portion when the battery lid is in the slide posture B is shown. In the electronic device according to the present invention, an enlarged cross-sectional view of the vicinity of the battery lid support portion when the battery lid is in the posture between the sliding movement state B and the closed state C when the battery is normally inserted is shown. In the electronic device according to the present invention, an enlarged cross-sectional view of the vicinity of the battery lid support portion when the battery lid is in the closed state C when the battery is normally inserted is shown. (A) In the electronic device according to the present invention, an enlarged cross-sectional view in the vicinity of the battery lid support portion when the battery lid is in the posture between the sliding movement state C and the closed state D when the battery is abnormally inserted is shown. In the electronic device according to the present invention, (c) the present invention represents an enlarged cross-sectional view of the vicinity of the battery lid support portion when the battery lid is in the posture between the sliding movement state C and the closed state D when another battery is abnormally inserted. In such an electronic device, an enlarged cross-sectional view of the vicinity of the battery lid support portion when the battery lid is in the posture between the sliding movement state C and the closed state D when another battery abnormality is inserted is shown. The electronic device concerning this invention represents the expanded sectional view of the rib vicinity when the battery cover is in the closed state D when the battery is normally inserted. Represents the battery storage unit and battery lid in the prior art

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electronic apparatus main body 100 Battery cover 101 Anti-slip part 200 for operation fingers Battery storage unit 202 Main body side contact part 204a-b Main body side support part 206a-d Lock part 207a, b Main body side terminal 301 Coil spring 302 Contact part 306a- d Claw part 304 Battery cover support part 307a, b Battery cover side terminal 308 Rib

Claims (5)

A battery storage unit of an electronic device that dissipates and removes a battery lid by rotational movement and sliding movement,
The battery lid is formed of a metal elastic body, and is slid on the positive and negative contact portions of the battery, the battery lid-side terminal configured to conduct between the contact portions, and the upper surface portion of the battery lid. Centering on the vicinity of the rear end of the battery lid, the anti-slip portion for the operating finger that is uneven in the direction perpendicular to the direction, four claw portions for sliding and engaging with the electronic device body A battery lid support portion that supports the battery lid that is urged by a coil spring in a vertically upward direction so as to be rotatable, and the main body of the battery storage unit is configured by fitting the battery lid support portion of the battery lid to form a hinge A main body side support portion, a contact portion for the positive electrode and the negative electrode of the battery, each of which is constituted by a metal elastic body, a main body side terminal having a structure for conducting between the corresponding contact portions, and four claws of the battery lid Four locking parts for engaging the parts, and And in the storing operation of the battery cover, the battery cover is opened from the vertical open state perpendicular to the main body, the horizontal open state reached by rotational movement from the vertical open state, from the horizontal open state When the battery cover approaches the closed state in the slide movement state, the battery cover contact portion and the main body when the slide movement state for sliding movement and the slide movement state move to the end and reach the closed state The contact portion receives a biasing force from the main body side contact portion in the sliding movement direction, and the battery lid further closes against the biasing force. When moving to the state side, both contact portions are conducted, and the four claw portions and the four lock portions are engaged with each other,
The battery lid has a rib protruding in the battery insertion direction. When a battery is inserted into the battery storage unit with a normal polarity, the battery lid slides from the sliding movement state and the rib is in the closed state. And the claw portion and the lock portion engage with each other,
A battery configured such that when the battery is inserted into the battery storage unit with an incorrect polarity, the claw portion and the lock portion cannot be engaged even when the battery slides from the slide movement state and approaches the closed state. Storage unit. The rib moves from the sliding state to the closed state and simultaneously presses the battery against the battery housing unit, and gradually increases the pressing force of the battery against the battery housing unit according to the sliding amount. The battery storage unit according to claim 1, wherein the battery storage unit is configured to come into contact with the battery at an angle. 3. The battery storage unit according to claim 1, wherein the rib is integrally formed with the battery lid so as to have elasticity and is disposed on the battery lid. 4. The battery storage unit according to claim 1, wherein the contact portion is integrally formed with the battery lid and disposed on the battery lid. 5. The battery storage unit according to claim 1, wherein each of the claw portion and the lock portion has two or more locations.