JPH09167604A - Battery compartment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure sufficient contact pressure between a battery and a battery contact piece when the battery is easily put in and out and mounted with the cover of a battery compartment closed. SOLUTION: A pair of battery contact pieces 21 and 22 brought into contact with a positive electrode and negative electrode of a battery respectively is provided in a battery compartment 10 for containing a battery 30 having a positive electrode at one end face and a negative electrode at the other end face, and the space between the battery contact piece 21 and 22 is approximately equal to the distance between the positive electrode and negative electrode of the battery. At least one battery contact piece is displaceably composed under elastic deformation in a specified range, and a depressing member 12 which depresses and energizes at least one contact piece toward the battery is provided in a cover member 11 of the battery compartment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery chamber for accommodating a battery, which is provided in a device such as an electronically controlled camera which uses a battery as a power source.

[0002]

2. Description of the Related Art In a device using a battery as a power source, for example, an electronically controlled camera, a battery is mounted as a power source for a drive mechanism and control circuit of each section. Generally, when mounting a battery on a device, the battery is placed in a battery chamber provided in the device and the lid is closed to fix the battery. The battery compartment is provided with battery contact pieces that come into contact with the positive and negative electrodes of the battery, and power is supplied to each drive mechanism, circuit, etc. via the battery contact pieces. A certain amount of load (contact pressure) is applied between the battery contact piece and the electrode of the battery to ensure the contact. Although it depends on the usage of the device, generally, the load between the electrode of the battery and the contact piece needs to be set to a high value in consideration of the self-weight of the battery and shocks during use. However, if the load is too large, the battery contact pieces will be urged in a direction to press the batteries against each other, which makes it difficult to install the battery, or when installing the battery in the battery chamber There was a case where a large force was applied to the armature and the armature was bent.

[0003]

SUMMARY OF THE INVENTION According to the present invention, when the battery is easily put in and taken out and the battery compartment is closed and the battery is in a mounted state, a sufficient contact pressure is exerted between the battery and the battery contact piece. The challenge is to obtain a battery compartment that will add

[0004]

In order to solve the above-mentioned problems, the battery chamber of the present invention has a predetermined shape and has a positive pole on one end face of the main body and an end face on the opposite side of the main body from the positive pole. A battery chamber for accommodating a battery having a negative electrode, wherein an opening for attaching and detaching the battery is formed in the battery chamber, a lid member for closing the opening, and a positive electrode and a negative electrode of the battery. A pair of battery contact pieces that are respectively in contact with the poles, and the interval between the pair of battery contact pieces is provided on the battery chamber wall surface at an interval substantially equal to the interval between the positive electrode and the negative electrode of the battery, At least one of the pair of battery contact pieces is displaceable while elastically deforming within a predetermined range, and the lid member is provided with a pressing member for pressing and urging the at least one contact piece toward the battery. It is characterized by being. Therefore, when the lid member is closed, a sufficient contact pressure is applied between the battery electrode and the battery contact piece, and when the lid member is opened, contact between the battery electrode and the battery contact piece is made. The pressure is relatively small, so the battery can be easily attached and detached.

The pressing member is provided on the swing end side of the lid member,
The at least one contact piece is provided so as to project toward the inside of the battery chamber, and when the lid member is closed, the at least one contact piece may be pressed and urged toward the battery by the pressing member. Is. The lid member may have one end pivotally supported by an edge portion facing the opening.

The at least one contact piece is a conductive member having elasticity, one end of which is fixed to the bottom surface of the battery chamber and the other end of which is a free end. A protrusion may be formed between the fixed end and the free end so as to contact the electrode of the battery. Then, an interference portion that interferes with the pressing member when the lid member is closed is formed on the free end side of the at least one contact piece, and when the lid member is closed, the pressing member causes the interference portion. By moving to the battery side, it is possible to generate a contact pressure between the contact piece and the battery.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a camera 1 having a battery chamber, which is a first embodiment of the present invention, as viewed from the rear. The camera 1 is an electronically controlled camera and includes a battery compartment 10
Various operations are controlled and the lens and shutter are driven by using the battery installed in the power source. The operation of the camera itself is the same as that of a known electronically controlled camera, and the description thereof will be omitted.

FIG. 2 is a sectional view of the camera 1 of FIG. 1 taken along the line II-II. In FIG. 2, the battery 30 is housed in the battery chamber 40, and the lid member 11 is open. FIG.
FIG. 4 is a diagram showing a state in which the lid member 11 is completely closed (details will be described later).

The structure of the battery chamber 40 will be described in detail with reference to FIG. The battery compartment 10 of the camera 1 (FIG. 1) is
Battery housing 4 which is a recess formed in the camera body 100
0 and a lid member 11 for closing the opening of the battery storage portion 40. Both the camera body 100 and the lid member 11 are made of insulating synthetic resin.

On the bottom surface 41 of the battery housing 40, the battery 30
There are provided battery contact pieces 21 and 22 made of a conductive plate-like member that come into contact with the negative electrode and the positive electrode, respectively. As shown in FIG. 2, the battery contact piece 22 on the positive electrode side of the battery is fixed along the wall surface of the storage section 40.
A portion of the battery contact piece 22 that comes into contact with the positive electrode of the battery 30 is formed as a contact portion 22P protruding toward the battery.

The battery contact piece 21 is an elastic conductive plate-like member, one end of which is fixed to the bottom surface 41 of the battery housing 40, and the other end of which is a free end. Between the free end and the fixed end, a contact portion 21P that comes into contact with the negative electrode of the battery 30
Is formed so as to project toward the battery. Since the battery contact piece 21 is composed of an elastic member, it can be displaced while elastically deforming within a predetermined range around the fixed end.

The battery 30 is inserted into the battery chamber 10 (accommodation portion 40) with the positive electrode facing the contact portion 22P and the negative electrode facing the contact portion 21P. The distance between the contact portion 21P of the battery contact piece 21 and the contact portion 22P of the battery contact piece 22 is set to be substantially equal to the length between the positive electrode and the negative electrode of the battery 30 when the lid member 11 is opened. Cage,
Therefore, in the state shown in FIG. 2, the contact pressure between the electrode of the battery 30 and the battery contact pieces 21 and 22 is relatively small (or almost not generated). Therefore, the attachment / detachment of the battery 30 to / from the battery storage portion 40 can be performed extremely easily without being hindered by the battery contact pieces 21 and 22. Since the contact pressure between the electrode of the battery 30 and the battery contact pieces 21 and 22 is small, the battery 30 is not only easily attached and detached, but also unnecessary force is applied to deform or damage the battery contact pieces 21 and 22. There is no fear of causing it.

As shown in FIGS. 2 and 3, the battery contact piece 2
At the free end of No. 1, an engaging portion 23 is formed which projects to the side opposite to the battery 30 with respect to the surface of the contact piece 21. Engagement part 23
Is formed by winding the free end side of the contact piece 21 into a cylindrical shape.

As shown in FIG. 2, the lid member 11 is swingably supported by a shaft 10X at a portion of the camera body 100 facing the housing portion 40. At the swinging end (upper end in FIG. 2) of the lid member 11, a protrusion 12 for pressing and biasing the battery contact piece 21 toward the battery 30 is provided on the storage part 40 side (right side in FIG. 2). And is integrally formed with the lid member 11. When the lid member 11 is closed, the protrusion 12
And the engaging portion 23 interfere with each other, and the engaging portion 23 is displaced to the battery side. As a result, a predetermined contact pressure is generated between the battery contact piece 21 and the battery 30. As shown in FIG.
Has a cylindrical recess 24 that engages with the engaging portion 23 when the lid member 11 is completely closed. By engaging the cylindrical engaging portion 23 with the cylindrical recess 24, The lid member 11 is held at the position where the storage section 40 is closed. As described above, the engaging portion 23 is displaced toward the battery in this state,
The battery contact piece 21 is elastically deformed.

As described above, according to the first embodiment,
When the cover member 11 is open, the contact pressure between the battery contact pieces 21 and 22 and the electrode of the battery 30 is extremely low, and therefore the battery 30 can be easily attached and detached. On the other hand, when the battery 30 is placed in the storage portion 40 of the battery chamber 10 and the lid member 11 is closed, the protrusion 12 and the engagement portion 23 interfere with each other, so that the battery contact piece 21 (the protrusion 21P) and the battery 30 are separated from each other. A predetermined contact pressure is generated between the electrodes. Further, the engaging portion 23 and the protrusion 1
2 engages with the engaging recessed portion 24 formed in
The closed state of can be maintained. Although the negative electrode of the battery is configured to come into contact with the contact piece 21 urged by the protrusion 12 in the first embodiment, the same configuration is applied even when the polarity of the battery is reversed. Can solve problems.

In the above-described first embodiment, the battery contact piece and the battery are arranged side by side along the direction perpendicular to the swing axis of the lid member. In the second embodiment described below, the battery contact piece and the battery are arranged side by side in a direction parallel to the swing axis of the lid member. That is, the swing shaft is configured to extend in the axial direction of the cylinder of the cylindrical battery. FIG. 4 is a perspective view of a camera 1M according to a second embodiment of the present invention as seen from the rear. The camera 1M is an electronic control camera similar to the camera 1 of the first embodiment, and the battery chamber 110
Various operations are performed using the battery mounted on the battery as a power source.

FIG. 5 is a sectional view taken along line AA of the camera 1M shown in FIG. FIG. 5 shows a state in which the lid member 111 of the battery chamber 140 is completely closed.

The structure of the battery chamber 110 will be described in detail with reference to FIG. Battery compartment 110 of camera 1M (FIG. 4)
Has a battery housing portion 140 which is a recess formed in the camera body 100M, and a lid member 111 for closing the opening of the battery housing portion 140. Both the camera body 100M and the lid member 111 are made of insulating synthetic resin.

On the side wall 141 of the battery accommodating portion 140, there is provided a battery contact piece 121 made of a conductive plate member that comes into contact with the negative electrode of the battery 30. Although the battery contact piece that contacts the positive electrode of the battery 30 is the same as that of the first embodiment, it is not shown in the figure, but it is fixed along the wall surface of the storage unit 140 and contacts the positive electrode of the battery 30. The contacting part is formed as a contact part protruding toward the battery.

The battery contact piece 121 is an electrically conductive plate member having elasticity, one end of which is fixed to the side wall 141 of the battery housing portion 140 and the other end of which is a free end. The free end and the fixed end are roughly divided into three regions, as shown in FIG. The three regions are a contact part 121b that contacts the negative electrode of the battery, an arm part 121a that connects the fixed end and the contact part 121b, and an engagement part (interference part) 121c that interferes with an engagement member described later.

As shown in FIG. 5, the lid member 111 is rotatably supported about an axis 110X extending in a direction parallel to the cylindrical axis direction of the battery 30. A lock member 112 is attached to the lid member 111. A sliding groove 111G for fitting the lock member 112 is formed in the lid member 111, and the locking member 1 is formed by the sliding groove 111G.
12 is slidably supported in a direction perpendicular to the axis 110X and parallel to the surface of the lid member 111. Lock member 1
Reference numeral 12 denotes a protrusion 114 that protrudes from the end surface of the lid member 111 on the free end side, and the engaging member 1 that interferes with the interference portion 121c.
13, and the operation unit 112M is integrally formed.

By sliding the operating portion 112M to the right in FIG. 5, the tip of the protruding portion 114 is retracted to the end surface position of the lid member 111. A lock groove 115 that engages with the protrusion 114 is formed on the camera body 100 in the state shown in FIG. The closed state of the lid member 111 is maintained by the engagement of the protrusion 114 and the lock groove 115, and the protrusion 11 is operated by operating the operation portion 112M.
4 is disengaged from the lock groove 115, and the lid member 111
Can be released.

As shown in FIG. 5, the tip of the protruding portion 114 is
It is formed as a taper portion 116 that has a small protrusion amount on the battery storage portion 140 side and a large protrusion amount on the front surface side (upper side in FIG. 5) of the lid member 111. Also, the lock member 112
The protrusion 114 is provided on the side opposite to the protrusion 114 of the lid member 11.
A spring 119 for urging the lock member 112 is arranged so as to project from the one end surface. Therefore, by simply pushing the open lid member 111 in the closing direction, the camera body 100M and the taper portion 166 interfere with each other, the protrusion 114 moves to the right side in FIG. 5, and the lid member 111 is completely closed. 5, the interference between the camera body 100M and the tapered portion 116 disappears, and the spring 119 urges the lock member 112 toward the left in FIG. 5, so that the protrusion 114 is shown in FIG. Return to position.

When the lock member 112 is at the position shown in FIG. 5, the engaging portion 113 is moved to the interference portion 1 as shown in FIG.
21c, the interference part 121c is displaced to the battery 30 side (lower side in FIG. 6). As a result, the contact portion 121b can be brought into contact with the battery 30 with a predetermined contact pressure.
The BB cross section of FIG. 6 corresponds to FIG.

When the lid member 111 is closed, the engaging portion 11
If 3 is opposed to the end of the contact piece 121, the contact piece 121 may be damaged. Therefore, as shown in FIG. 7 which shows a cross section immediately before (a) and after (b) the lid member 111 being closed, the end portion of the contact piece 121 on the lid member side is formed in a shape bent to the battery side by a predetermined amount. Has been done. Furthermore, the engaging portion 11
The tip of 3 is also formed as a curved surface, and the lid member 111
The engaging portion 113 surely pushes down the contact piece 121 when closing the.

When the lid member 111 is opened, the operating portion 112M is moved to the right side in FIG. 5 as described above, and the engagement between the protrusion 114 and the lock groove 115 is released. When the operation portion 112M is operated in this manner, the engagement between the engagement portion 113 and the interference portion 121c is released as shown in FIG. 8, and thus the lid member 111 can be easily opened. After the lid member 111 is opened, the engaging portion 113 retracts from the storage portion 114 together with the lid member 111, so that the battery contact piece 121 holds the state shown in FIG. 8. Note that FIG. 8 shows the positional relationship between the battery 30 and the battery contact 121 in the state where the negative electrode of the battery 30 is in contact with the battery contact on the negative electrode side (not shown).

As described above, according to the second embodiment,
When the lid member 111 is open, the battery contact piece 121 does not come into contact with the battery 30, so that the battery 30 can be easily attached and detached. On the other hand, when the battery 30 is placed in the storage portion 140 of the battery chamber 110 and the lid member 111 is closed, the engaging portion 1
13 and the interference portion 121c are engaged, the battery contact piece 121 is
A predetermined contact pressure is generated between the (contact portion 121b) and the electrode of the battery 30. In addition, also in the second embodiment, the first
As in the case of the above embodiment, the relationship between the polarity of the battery and the battery contact piece and the lock member 112 can be reversed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of a camera according to a first embodiment.

2 is a cross-sectional view of a battery chamber of the camera of FIG.

FIG. 3 is a partial cross-sectional view of a battery chamber of the camera of FIG.

FIG. 4 is a perspective view showing the external appearance of the camera of the embodiment shown in FIG.

5 is a cross-sectional view of the battery chamber of the camera of FIG.

6 is a cross-sectional view of the battery chamber of the camera of FIG.

FIG. 7 is a diagram showing an engaged state of an engaging portion and a battery contact piece.

8 is a cross-sectional view of the battery chamber of the camera of FIG.

[Explanation of symbols]

 1 Camera 10 Battery Chamber 11 Lid Member 10X Swing Shaft 12 Projection 21 Battery Contact Piece 22 Battery Contact Piece 23 Engagement Part 21P Contact Part 22P Contact Part 24 Cylindrical Recess 30 Battery 40 Storage Part 111 Lid Member 140 Storage Part 112 Lock Member 113 Engagement part 114 Projection part 115 Lock groove 116 Tapered part 119 Spring 121 Battery contact piece 121a Arm part 121b Contact part 121c Interference part

Claims (14)

[Claims] 1. A battery having a predetermined shape and having a positive electrode on one end surface of the battery body and a negative electrode on the other end surface opposite to the one end surface with respect to the battery body. And a lid member for closing the opening, and a positive electrode of the battery provided on a wall surface of the battery chamber. And a pair of battery contact pieces for respectively contacting the negative electrode, and the distance between the pair of battery contact pieces is substantially equal to the distance between the positive electrode and the negative electrode of the battery. At least one of the contact pieces is displaceable while elastically deforming within a predetermined range, and the lid member is provided with a pressing member for pressing and urging the at least one battery contact piece toward the battery,
Battery room characterized by. 2. The battery chamber according to claim 1, wherein the lid member has one end pivotally supported by an edge portion facing the opening. 3. The pressing member is provided on the swinging end side of the lid member so as to project toward the inside of the battery chamber, and the at least one contact piece is provided with the contact member when the lid member is closed. The battery chamber according to claim 1 or 2, wherein the battery member is pressed and urged toward the battery by a pressing member. 4. The at least one contact piece is an elastic conductive member having one end fixed to the bottom surface of the battery chamber and the other end being a free end. The battery chamber according to claim 3, wherein a protrusion that is in contact with an electrode of the battery is formed between the fixed end and the free end. 5. An interference portion that interferes with the pressing member when the lid member is closed is formed on the free end side of the at least one contact piece, and when the lid member is closed, the pressing member is The battery chamber according to claim 4, wherein the interference part is moved to the battery side. 6. An engaging portion that engages with the interference portion is formed on the pressing member, and when the lid member is completely closed,
The battery chamber according to claim 4, wherein the interference portion and the engaging portion are engaged with each other to maintain the closed state of the lid member. 7. The battery chamber according to claim 1, wherein the battery chamber has a lock means for holding the closed state of the lid member. 8. The battery according to claim 3, wherein the at least one contact piece and an electrode of the corresponding battery are arranged along a direction perpendicular to the swing axis of the lid member. Room. 9. The battery according to claim 3, wherein the at least one contact piece and the electrode of the corresponding battery are arranged along a direction parallel to the swing axis of the lid member. Room. 10. The at least one contact piece has one end fixed to the accommodating portion and the other end being a free end, and facing the corresponding battery electrode between the fixed end and the free end. A protruding portion is formed, and the lid member is provided with a pressing portion that presses the free end of the at least one contact piece toward the battery side when the lid member is closed. The battery compartment according to claim 9, wherein: 11. An engaging projection that can project from a side surface of the lid member projects from a swinging end portion of the lid member, and the engagement portion has the engagement portion when the lid member is closed. An engagement recess that engages with the fitting protrusion is formed, and the state in which the lid member is closed is held by the engagement between the engagement protrusion and the engagement recess. The battery compartment according to item 10. 12. The position where the pressing portion and the engagement protrusion are integrally formed and slidable with respect to the lid member, and the engagement protrusion engages with the engagement recess. 12. The battery chamber according to claim 11, wherein the pressing portion presses the at least one contact piece into contact with the corresponding battery electrode when in the state of. 13. The lid member includes a biasing member that biases the engagement protrusion in a direction in which the engagement protrusion is projected from the swing end,
The engaging projection is formed as a taper portion with a small projection amount at the tip of the projection part on the storage part side and a large projection amount on the outside, and due to interference between the taper part and the storage part when closing the lid member. The engaging projection is retracted from the projecting position, and when the lid member is completely closed, the engaging projection is projected to engage with the engaging recess,
The pressing portion does not press the at least one contact piece when the engaging protrusion is retracted from the projecting position, and the pressing portion when the engaging protrusion is engaged with the engaging recess. 13. The battery chamber according to claim 12, wherein the at least one contact piece is pressed. 14. The battery chamber according to claim 1, wherein the battery has a cylindrical shape, and the positive electrode and the negative electrode are provided on both bottom surfaces of the cylinder, respectively. .