JP4169451B2 - Battery fixture - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery fixture for fixing a battery when the battery is accommodated in a device driven by the battery.
[0002]
[Prior art]
Conventionally, in a device driven by a battery, a battery housing portion is provided in the device, and an elastic body such as sponge or rubber is disposed on the inner surface of the battery housing portion, and the backlash of the battery can be absorbed by the elastic body. It was done. Alternatively, using the elasticity of the electrode contacts provided in the battery housing portion, the battery is fixed in the battery housing portion to suppress rattling.
[0003]
[Problems to be solved by the invention]
In general, battery dimensional tolerances are large. When the tolerance is absorbed and an attempt is made to fix the battery in the battery housing portion by utilizing the elasticity of the inner surface of the battery housing portion or the electrode contact, the battery is caught in the battery housing portion and is difficult to put in and out. If it was easy to put in and take out the battery, the rattling of the battery could not be suppressed and the battery could not be fixed.
[0004]
An object of this invention is to provide the battery fixing tool which is easy to take in and out of a battery, and suppressed the shakiness of the battery.
[0005]
[Means for Solving the Problems]
The battery fixture according to the present invention has a battery accommodating portion, which has an opening in the upper part, and the battery is accommodated in the inside from this opening. Various batteries can be used as this battery, for example, a square battery or a cylindrical battery can be used. A lid member is provided so as to be slidable in a certain sliding direction from an uncovered state that does not exist on the opening to a covered state that covers at least the opening and covers the opening. In the non-covered state, the tongue piece protrudes obliquely upward along the sliding direction from the opening and is in contact with the lid member. The tongue piece rotates to the opening side by sliding the lid member from the non-covered state to the covered state, and is pressed against the battery in the covered state.
[0006]
According to this fixture, the lid member presses the tongue piece against the battery in a state where the lid member covers the opening. Therefore, the battery does not rattle in the battery housing portion. In addition, when the lid member does not cover the opening, the tongue piece is located in a direction away from the opening, so that the tongue piece does not interfere with the insertion and removal of the battery, There is no elastic body or the like for pressing and fixing the battery. Accordingly, the battery can be taken in and out quickly.
[0007]
The opening of the battery housing portion has a length dimension substantially equal to the length dimension of the battery, and has a long edge portion facing each other and a length dimension substantially equal to the width dimension of the battery and facing each other. A short edge portion, and the lid member slides from the non-covered state to the covered state along the long edge portion of the opening from one short edge side to the other short edge side. The tongue piece is formed on one short edge side of the opening.
[0009]
If comprised in this way, when covering a battery accommodating part by sliding a cover member along the long edge of an opening part, the component of the force added to the cover member in order to make a cover member slide is carried out. It can be applied to the tongue piece and pressed against the opening side. Therefore, the square battery can be pressed by the tongue piece at the same time as the covering operation is performed, and the workability is improved.
[0010]
A square battery used as a battery has two electrodes having different dimensions on one end face thereof. Two contact pieces to which electrodes of two different dimensions of the prismatic battery are connected can be formed on the short edge portion of the battery housing portion. These two contact pieces may have the same shape. Of these two contact pieces, protrusions are formed on both sides of a contact of a small-sized electrode in the rectangular battery with an interval smaller than the dimension of the large-sized electrode of the rectangular battery.
[0011]
When the two electrodes of the prismatic battery are brought into contact with the two contact pieces of the battery housing part, there is a possibility that the polarities are erroneously connected. In particular, this possibility is high because the prismatic battery is taken in and out through the opening. However, since the protrusions are formed on both sides of the contact piece with which the small size electrode of the square battery comes into contact with a space smaller than the size of the large size electrode of the square battery, the size of the square battery is large. The protrusion prevents the size electrode from being erroneously connected to the contact piece for the small size electrode of the square battery. That is, the erroneous connection of the square battery can be prevented.
[0012]
The tongue piece may be formed such that the friction coefficient on the side in contact with the battery in the covered state is larger than the friction coefficient on the opposite side. If comprised in this way, a tongue piece can fix a battery firmly. Therefore, even if the battery housing part is moved, the battery does not rattle during the movement.
[0013]
Alternatively, the tongue piece may have an elastic contact member having a larger coefficient of friction than the tongue piece on the side of the tongue piece that contacts the battery in the covered state.
[0014]
With this configuration, since the battery can be firmly fixed in the battery housing portion, even if the battery housing portion is moved, the battery does not rattle during movement, and the contact member has elasticity. Further, it is possible to absorb the dimensional tolerance of the battery, particularly the dimensional tolerance in the direction toward the opening, and obtain a tension for pressing the battery.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
A battery fixture according to an embodiment of the present invention is implemented in a wireless microphone as shown in FIG. 1, for example. Of course, it can be applied to other electric devices. This wireless microphone includes a main body 2 and a lid member 4.
[0018]
Although the main body 2 is formed in a substantially cylindrical shape and is not shown in the figure, a microphone and a transmission circuit for transmitting an audio signal collected by the microphone are provided in the first half. A battery housing 6 is provided in the latter half of the main body 2. The battery housing part 6 has a shape in which the upper part of the rear half part of the main body part 2 is removed from the horizontal plane along the central axis along the length direction. The battery accommodating part 6 has an opening in the upper part thereof, and is formed therein so as to accommodate, for example, a JIS standard, IEC standard 6F22, 6LR61 type square battery 12.
[0019]
As shown in FIG. 3, the opening of the battery housing portion 6 has two long edge portions 8 that face each other, and further has two short edge portions 10 that are orthogonal to the long edge portion 8. The long edge 8 has a length slightly longer than the long edge of the square battery 12, and the short edge 10 has a length substantially equal to the short edge of the square battery 12. The prismatic battery 12 is taken in and out of the battery housing 6 through this opening.
[0020]
Two contact pieces 14 and 16 are formed on the short edge 10 on the front side of the opening 6. These contact pieces 14 and 16 are made of conductive metal having the same shape, and are in contact with two electrodes 18 and 20 existing on one end face of the prismatic battery 12 with a space therebetween. As apparent from FIG. 3, the electrodes 18 and 20 of the prismatic battery 12 are different in shape, and the dimensions of the electrode 20 are larger than those of the electrode 18. Originally, the contact piece 14 is in contact with the electrode 18, and the contact piece 16 is in contact with the electrode 20. Since the contact pieces 14 and 16 do not have different shapes corresponding to the electrodes 18 and 20, when the square battery 12 is received in the battery storage portion 6 from the opening, the electrode 20 is connected to the contact piece 14. There is a possibility that the electrode 18 is erroneously connected to the piece 16. Therefore, two plate-like protrusions 22 and 22 are provided on both sides of the contact piece 14 to which the electrode 18 having a small size is to be connected, with a space smaller than the size of the electrode 20 of the square battery 12. 6 protrudes substantially perpendicularly to the bottom of the battery housing 6 toward the inside. This protrusion amount is made larger than the protrusion amount of the contact piece 14.
[0021]
Since the protrusions 22 are formed as described above, when the prismatic battery 12 is accommodated in the battery accommodating portion 6 through the opening from the state shown by the dotted line in FIG. Even when the electrode 18 is located on the contact piece 14 side and the electrode 18 is located on the contact piece 16 side, the electrode 20 is in contact with the protrusion 22 and prevents the prismatic battery 12 from further falling. Therefore, it is possible to prevent the electrode 20 from being erroneously connected to the contact piece 14 and the electrode 18 from being connected to the contact piece 16 by mistake. Accordingly, the contact pieces 14 and 16 having the same shape can be used, and the cost can be reduced.
[0022]
A tongue piece 24 is provided on the rear short edge portion 10 side of the battery housing portion 6. The tongue piece 24 is an elongated plate-like body made of, for example, a synthetic resin, and has a proximal end portion on the rear short edge portion 10 side and a distal end portion on the front short edge portion 10 side. As shown in FIG. 2, a rotating shaft 26 is arranged and fixed on the back side of the base end portion of the tongue piece 24 along the width direction thereof. The rotating shaft 26 is freely rotatable on top of bearings 28, 28 provided inside the housing portion 6 so as to be located on both sides in the width direction of the tongue piece 24 (the direction along the short edge portion 10 of the opening). It is supported by. Therefore, the tongue piece 24 is rotatable around the rotation shaft 26. The bearings 28 and 28 are in contact with one end face of the prismatic battery 12 (the end face opposite to the end face where the electrodes 18 and 20 are provided).
[0023]
A movable means, for example, an urging means, specifically an elastic body, more specifically, a coil spring 30 is inserted into the rotating shaft 26. One end of the coil spring 30 is coupled to, for example, the tongue piece 24, and the other end is coupled to one bearing 28. The coil spring 30 applies an urging force to the tongue piece 24 in the clockwise direction in FIG. 1, that is, in the direction away from the battery housing 6. As shown in FIG. 1B, in this biased state, the tongue piece 24 is considerably opened from the opening so that the prismatic battery 12 can be taken in and out of the battery housing portion 6 without contacting the tongue piece 24. In a remote location. A contact member 32 is attached to the inner surface of the tip of the tongue piece 24. The contact member 32 is made of a material having a larger friction coefficient than the tongue piece 24, for example, sponge or rubber.
[0024]
The lid member 4 is also formed in a substantially cylindrical shape like the main body 2 and is formed hollow so that the battery accommodating portion 6 can be accommodated therein. One end of the lid member 4 is opened and the other end is closed. The lid member 4 is slidable along the length direction of the main body 2 so that the battery accommodating portion 6 is located inside the open end portion of the lid member 4. A female thread 34 is formed on the inner peripheral surface of the open end of the lid member 4. As shown in FIG. 1A, this can be screwed with a male screw 36 formed on the outer peripheral surface of the main body 2 on the front side of the battery housing 6. In this screwed state, the battery housing portion 6 is covered with the lid member 2. It is desirable that at least the inner peripheral surface of the lid member 4 has a small coefficient of friction.
[0025]
In this battery fixture, the rectangular battery 12 is accommodated in the battery accommodating portion 6 as shown in FIG. 1B, and the electrodes 18 and 20 of the rectangular battery 12 are brought into contact with the corresponding contact pieces 14 and 16. Thereafter, the lid member 4 is slid toward the main body 2 side. As this sliding occurs, the opening end portion of the lid member 4 comes into contact with the back surface of the tongue piece 24 and presses the tongue piece 24 toward the battery housing portion 6 against the urging force of the spring coil 30. In the state where the lid member 4 completely covers the battery housing 6, that is, in the state where the female screw 34 is screwed into the male screw 36, the contact member provided on the back surface of the tongue piece 24 as shown in FIG. The contact member 32 is pressed against the body of the square battery 12, and firmly presses the square battery 12 against the bottom surface of the battery housing 6.
[0026]
In this pressed state, the contact member 32 presses a position somewhat closer to the bearing 28 than the central portion of the prismatic battery 12. When the contact member 32 is used to press a position closer to the electrodes 18 and 20 than the central portion of the prismatic battery 12, a long tongue piece 24 must be used, and a large rotational torque is required. It is necessary to use a coil spring 30 having a relatively large urging force. However, when contacting the position closer to the bearing 28 than the central portion of the square battery 12, the length of the tongue piece 24 is shortened and the coil spring 30 only needs to generate a small rotational torque. A spring can be used. Moreover, if the tongue piece 24 is long, it will obstruct the taking in and out of the prismatic battery 12, additional materials will be required, the cost will be high, and the weight will be heavy. Therefore, the tongue piece 24 is short.
[0027]
Since the contact member 32 has elasticity, even if there is a tolerance in the dimension of the square battery 12 in the direction of the opening, the square battery 12 can be securely fixed after absorbing this. . Further, since the contact member 32 is made of a material having a large friction coefficient, the contact between the rectangular battery 12 and the contact member 32 is maintained, and the contact can be firmly pressed into the battery housing portion 6. When the battery is moving, the square battery 12 does not rattle. Since at least the inner peripheral surface of the lid member 4 has a small coefficient of friction, the tongue piece 24 can be pressed quickly as the lid member 4 slides, and there is a hindrance to accommodation of the prismatic battery 12. It does not occur. Moreover, when the operation for covering the battery housing 6 with the lid member 4 is performed, the rectangular battery 12 can be simultaneously pressed and fixed by the tongue piece 24. Therefore, it is not necessary to perform the fixing operation of the prismatic battery 12 separately from the cover operation, and the workability is good.
[0028]
In addition, when the square battery 12 is replaced, the screwing between the female screw 34 and the male screw 36 is released, and the lid member 4 may be slid rearward. Thereby, the pressing by the lid member 4 against the tongue piece 24 is released, and the tongue piece 24 is rotated by the biasing force of the coil spring 30 in the direction away from the opening as shown in FIG. Thereafter, the square battery 12 is taken out from the battery housing portion 6 and a new square battery 12 is housed in the battery housing portion 6, and the tongue battery 24 is in contact with the tongue piece 24 during this loading / unloading. Therefore, the tongue piece 24 does not become an obstacle to the insertion and removal of the prismatic battery 12. That is, the square battery 12 can be easily taken in and out.
[0029]
In the above-described embodiment, the tongue piece 24 is provided on the short edge portion 10 side on the rear side of the battery housing portion 6. Alternatively, the tongue piece 24 may be provided on the short edge portion 10 side on the front side of the battery housing portion 6. . It can also be provided on either long edge 8 side of the battery housing 6. Further, in the above embodiment, the tongue piece 24 is provided in the battery housing portion 6, but a bearing is provided on either the long edge portion 8 or the short edge portion 10 of the opening of the battery housing portion 6. It is also possible to rotatably support the tongue piece 24.
[0030]
Further, in the above embodiment, the tongue piece 24 is made of synthetic resin and applied with a biasing force by the coil spring 30. However, if the tongue piece 24 is formed by a leaf spring, the coil spring 30 becomes unnecessary. . Similarly, the coil spring 30 can be omitted even if the tongue piece 24 is made of synthetic resin and the elasticity of the synthetic resin itself is used. The coil spring 30 is inserted through the shaft 26. However, if space is allowed, one end of the coil spring 30 may be fixed to, for example, the bottom of the battery housing portion 6 and the other end may be fixed to an appropriate position on the tongue piece 24.
[0031]
In the above embodiment, the biasing means by the coil spring 30 is provided as the movable means. However, the movable means is not limited to this, and a tongue piece rotating means may be provided. For example, by arranging the tongue piece along the sliding direction of the lid member and supporting the middle of the tongue piece to the opening so that the tongue piece can rotate, the tongue piece is positioned away from the opening and the opening. And a contact part is formed at the base end of the tongue piece, the contact part can be brought into contact with the inner surface of the lid member 4, and the lid member does not cover the opening. The inner surface of the lid member is brought into contact with the contact portion of the base end portion of the tongue piece, whereby the tongue piece is rotated to a position away from the opening portion, and the lid member is slid along the longitudinal edge of the opening portion to thereby move the inner surface of the lid member. When the contact position of the tongue piece changes, the tongue piece is rotated to the opening side, and finally the lid member 4 covers the opening, the inner surface of the lid member covers the tip of the tongue piece. It is good also as a structure pressed to the side.
[0032]
Alternatively, as the rotating means, the middle of the tongue piece is rotatably supported by the opening portion as described above, a weight is provided at the base end portion of the tongue piece, and the lid member 4 does not cover the opening portion. Then, when the tongue piece is rotated to a position away from the opening by the gravity of the weight and the lid member 4 is slid along the longitudinal edge, the inner surface of the lid member comes into contact with the tongue piece and the gravity of the weight is opposed. Thus, it is possible to adopt a configuration in which the tongue piece is rotated toward the battery side.
[0033]
In addition, the lid member 4 is configured to slide in the length direction of the main body 2 and cover the battery housing portion 6. For example, the lid member 4 is configured to cover the opening from above the battery housing portion 6. Can also be used. Alternatively, the lid member 4 is configured to be rotatable around the longitudinal axis of the battery housing portion 6, and the lid member 4 is slid from the short edge direction of the battery housing portion 6 to cover the opening. Also good.
[0034]
Moreover, in said embodiment, although the contact pieces 14 and 16 were made into the same shape, it can also be made into the shape corresponding to the electrode of the square battery 12 to which the contact pieces 14 and 16 should each be connected.
[0035]
In the above embodiment, a square battery is used as the battery. However, the present invention is not limited to this, and can be applied to various batteries. For example, instead of the square battery, a cylindrical battery, a button battery, or the like can be used.
[0036]
【The invention's effect】
As described above, in the battery fixture of the present invention, the battery can be easily taken in and out and the rattling of the battery can be suppressed. In addition, it is possible to prevent the square battery from being erroneously connected to the contact piece of the battery housing portion.
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view of a state in which a cover member of a wireless microphone in which a battery fixture according to an embodiment of the present invention is mounted is attached to and detached from a main body.
2 is a partially omitted front view showing a configuration of a tongue piece of the wireless microphone of FIG. 1; FIG.
FIG. 3 is a partially omitted plan view of a battery housing portion of the wireless microphone of FIG. 1;
[Explanation of symbols]
2 Main body 4 Lid member 6 Battery housing part 8 Long edge part 10 Short edge part 12 Square battery 18 20 Electrode 14 of square battery 16 Contact piece 22 Projection 24 Tongue piece 32 Contact member

Claims (5)

A battery housing portion that has an opening at the top, and a battery is housed inside the opening,
A lid member provided so as to be slidable in a certain sliding direction from a non-covered state that does not exist on the opening to a covered state that covers at least the opening and covers the opening;
In the non-covered state, it projects from the opening portion obliquely upward along the sliding direction, contacts the lid member, and the lid member slides from the non-covered state to the covered state. A tongue that rotates toward the opening and is pressed against the battery in the covered state;
A battery fixture to be provided. 2. The battery fixture according to claim 1, wherein the opening of the battery housing portion has a length dimension substantially equal to a length dimension of the battery, and is substantially equal to a long edge portion facing each other and a width dimension of the battery. Short-edge portions having equal length dimensions and facing each other, wherein the lid member extends from the one short edge side to the other short edge side along the long edge portion of the opening. A battery fixture formed so as to be slidable from the lid state to the covered state, and wherein the tongue piece is formed on one short edge side of the opening .   3. The battery fixture according to claim 2, wherein the battery is a square battery, and two contact pieces are formed on the short edge portion of the battery housing portion to which two different size electrodes of the square battery are connected. Of these two contact pieces, protrusions are formed on both sides of a contact of a small size electrode of the square battery with a smaller interval than the size of the large size electrode of the square battery. Battery fixture.   2. The battery fixture according to claim 1, wherein the tongue piece is formed such that a friction coefficient on a side in contact with the battery in the covered state is larger than a friction coefficient on a side opposite to the side in contact with the battery. Fixture. 2. The battery fixture according to claim 1, wherein the tongue piece has an elastic contact member having a friction coefficient larger than that of the tongue piece on a side contacting the battery. 3.

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