JP2593868Y2 - Battery case contact structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery case in which an insulating base is provided with a flat plate-shaped electrically conductive contact piece with which an electrode provided at at least one end of a battery contacts.

[0002]

2. Description of the Related Art There is known a battery case of this kind, for example, a battery housing room provided in a camera body in which an opening / closing lid for opening and closing the battery housing room is rotatably provided at a battery insertion opening. Have been. Such an opening and closing lid,
After contact with the battery insertion slot, it is fixed to its closed position by a fixing screw, a click stop mechanism, or the like. In the battery storage chamber having such a structure, the electric conduction contact pieces for bringing the electrodes at both ends of the loaded dry battery into contact with each other are fixed to the opening / closing lid by heat staking, screws, or the like. For this reason, the number of man-hours at the time of assembly is large, and the work is troublesome.

[0003] When a dry battery is loaded in the battery compartment, the positive electrode and the negative electrode must be inserted in the correct state without mistake, and these two electrodes and the camera contacts must be securely contacted. is necessary. If a battery is loaded by mistake in the opposite direction, a reverse voltage will be applied, which may damage the circuit.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to provide a contact structure for a battery case which can be simplified in structure and assembling work. Another object of the present invention is to provide a contact structure of a battery case capable of supplying electricity to a circuit only when a battery is properly loaded.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a battery case in which an insulating base is provided with a flat plate-shaped electrically conductive contact piece with which an electrode provided at at least one end of the battery comes into contact.
A positioning projection that abuts the electrically conductive contact at a fixed position on the insulating base to restrict movement in the planar direction, and engages with the electrically conductive contact at the fixed position to restrict movement in the thickness direction. A fixing hook is provided to allow the electric conduction contact piece to penetrate the fixing hook and allow the relative movement of the fixing hook and the electric conduction contact piece in the plane direction when the fixing hook penetrates. A fixing hole having a size to be provided is provided, and the positioning hook is moved in the fixing hole when the fixing hook penetrating the fixing hole is engaged with the electric conductive contact piece. Abut on the piece, provided at a position that regulates the movement in the plane direction, further set the interval between the fixing hook and the positioning projection smaller than the outer diameter of the battery,
The height is set to be smaller than the protruding height of the protruding electrode of the battery. According to this configuration, not only can the electrical conductive contact be easily mounted and fixed to the insulating substrate, but also by using a fixing hook and a positioning projection for fixing the electrical conductive contact, The reverse connection of the battery can be prevented without providing the protrusion for preventing the reverse connection.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on illustrated embodiments. FIG. 9 is a front view showing an embodiment of a camera to which the present invention is applied. This camera has a zoom lens 12, a distance measuring unit 13, a finder 14,
It has a strobe 15, a self-timer lamp 16, and a photometry window 17, and has a release button 18 on the upper surface.
The camera body 10 further includes, on one side thereof, a battery storage room 22 capable of storing cylindrical dry batteries (batteries) 23A and 23B.
In the battery insertion opening facing downward of the battery storage room 22, an opening / closing lid 21 for opening and closing the battery storage room 22 is provided.
It is provided so as to be rotatable around a rotation support shaft 21b. The battery storage chamber 22 is provided with an electrically conductive contact piece for contacting the plus side electrode and the minus side electrode at both ends of the dry batteries 23A and 23B on an insulating base made of a synthetic resin material or the like.

[0007] Of the electrically conductive contacts at both ends, the dry batteries 23
A and 23B, an opening / closing lid 21 which is an insulating base having an electrically conductive contact piece 24 corresponding to at least one end of the electrode, as shown in FIG.
As shown in FIG.
0c (FIG. 7) and a pivot 21b forming a hinge;
Wall portion 2 that contacts the lower wall of side wall 10b of camera body 10
1a, and a positioning hole 30 that engages with a projection 10d (FIG. 7) provided on the lower wall of the side wall 10b when moving to the closed position of the battery storage chamber 22, and restricts the movement to the open position. I have. Further, the opening / closing lid 21 has a fitting recess 21c (FIG. 2) formed at a substantially central portion thereof, which is formed lower than the periphery. A substantially central portion of the fitting concave portion 21c is formed lower, and the fixing hole 24f of the electric conduction contact piece 24 is fixed to the fixing hook 2c.
5 is formed with a flexure recess 21d which is an escape space for flexing the electrical conductive contact piece 24 downward against its spring property when it is engaged with the slide portion 25a. The opening / closing lid 21 further has the fixing hook 25 for holding the electric conduction contact piece 24 at a substantially central portion of the fitting concave portion 21c (bending concave portion 21d). Positioning protrusion 26 for positioning conductive contact piece 24
a, 26b and 26c.

The electric contact piece 24 is made of a conductive and flexible material such as a leaf spring. As shown in FIGS.
The main body portion is formed in substantially the same shape as the fitting concave portion 21c so as to be able to match with the fitting concave portion 21c, and both ends of the main body portion are provided with a bent-shaped negative contact portion 24a and a flat positive contact portion 24a. A side contact portion 24b is formed. An insertion fixing hole (fixing hole) 24e is formed between the negative contact portion 24a and the positive contact portion 24b in the main body portion of the electric conduction contact piece 24. The main body portion is integrally formed with a springy projection 24c that projects toward the rotation support shaft 21b when fitted into the fitting recess 21c. The engaging hook portion 24d at the tip of the spring protrusion 24c is engaged with a locking hook portion (locking portion) 10a (FIGS. 7 and 8) provided near the battery storage chamber 22 of the camera body 10. Then, the opening / closing lid 21 is locked at the closed position.

The fixing hook 25 is formed in a substantially T-shaped vertical section (FIG. 5), and is a plan view from the direction B in FIG.
As shown in FIG.
a, and a rectangular enlarged head 25b that is wider than the slide portion 25a and continuous from the slide portion 25a. As shown in the figure, the enlarged diameter head 25b is configured such that a circle e circumscribing in plan view is larger in diameter than a circle f circumscribing the slide portion 25a. The insertion fixing hole 24e has an insertion hole 24g which is slightly larger than the enlarged diameter head 25b so that the enlarged diameter head 25b can be inserted therein, and is approximately the same as or slightly larger than the vertical width of the slide portion 25a in FIG. The fixed holes 24f are formed continuously.

Each of the positioning projections 26a, 26b, 26c is located at a position where it can be engaged with both ends of the main body of the electric conduction contact piece 24 when the slide portion 25a is completely fitted in the fixing hole 24f. It is formed to protrude upward. Then, as shown in FIG. 2, the distance a between the fixing hook 25 and the positioning projection 26c is equal to the dry battery 23A (23).
B) is set to be smaller than the diameter b in FIG.
5 and the height c of each of the positioning projections 26c are equal to the positive electrode 23a which is a convex electrode of the dry battery 23A (23B).
Is set smaller than the protrusion height d.

When the electric conductive contact piece 24 is mounted on the opening / closing lid 21 having the above structure, first, the insertion hole 2 is formed in the enlarged diameter head 25b with the springy projection 24c facing the rotation support shaft 21b.
4 g, and the electric conduction contact piece 24 is fixed to the fixing hook 25.
And insert the enlarged diameter head 25b into the insertion hole 24g. Then, the negative side contact portion 24a is moved toward the positioning projections 26a and 26b as shown in FIG. 4 while lightly pressing and bending the periphery of the fixing hole 24f with a finger or the like.

Then, the fixing hole 2 narrower than the insertion hole 24g.
4f is fitted into the slide portion 25a, and at the same time, the periphery of the fixing hole 24f is strongly engaged with the back surface of the enlarged diameter head 25b by the return force from the state where the electric conduction contact piece 24 is bent downward. At this time, as shown in FIG. 1 and FIG.
6a, 26b, and 26c, respectively, and
4d in a state where it can be engaged with the hook 10a,
It is positioned and fixed in the fitting recess 21c. Then, the rotating support shaft 21b of the opening / closing lid 21 to which the electric conduction contact piece 24 is fixed at a fixed position is slidably engaged with the elongated hinge 10c of the camera body 10 side as shown in FIG. Then, the opening / closing lid 21 is brought into a state of being able to contact and separate from the battery insertion opening of the battery storage chamber 22. By such a simple operation, the electric conduction contact piece 24 can be securely attached to the opening / closing lid 21 and the opening / closing lid 21 can be mounted on the camera body 10 side.
Assembly work is greatly simplified.

In this state, dry batteries 23A and 23B are loaded in the battery storage chamber 22 in a proper state, and the electric conduction contact piece 24 is rotated toward the battery insertion slot, so that the camera body 10
The wall 21a is brought into contact with the lower wall of the side wall 10b, and the pivot 21b is moved along the longitudinal direction of the hinge 10c to slide the opening / closing lid 21 in the direction of arrow A in FIG. Then, the positioning hole 30 is engaged with the projection 10d provided on the lower wall of the side wall 10b, and the engagement hook 24d is formed.
Abuts on the locking hook 10a on the camera body 10 side, and after bending over the bulging portion of the locking hook 10a, returns to its original state. At this time, the returning operation of the engagement hook 24d gives the operator a click feeling, and at the same time, the engagement hook 24
8 is locked at the position shown in FIG. 8 by the locking hook 10a, the electric conduction contact piece 24
Thus, one end of the battery storage chamber 22 in a state where the dry batteries 23A and 23B are loaded is securely closed. Thereby, the dry batteries 23A loaded in the battery storage room 22,
Reference numeral 23B denotes a dry battery 23A on the opening / closing lid 21 side.
The negative electrode 23b of the dry cell 23B is brought into contact with the negative contact 24a.

As described above, the electric conduction contact piece 24 attached to the opening / closing lid 21 simultaneously constitutes a part of the click stop mechanism and a contact piece for electrically connecting the dry batteries 23A and 23B. There is no need for a special spring member or the like for the click stop mechanism. Therefore, the number of parts can be reduced, the structure can be simplified, and the number of assembling steps can be reduced.

As shown in FIG. 3, the batteries 23A and 23B
Of the battery 23A is reversed, and
That is, when the dry battery 23B is loaded in a normal state, the negative electrode 23b is located at the positive contact portion 24b where the positive electrode 23a of the dry battery 23A should be located in the normal state. The battery 23A, which is larger than the distance a between the positioning protrusion 26c and the positioning protrusion 26c,
And the fixing hook 25 prevent the positive contact 24
b cannot be contacted. Therefore, the camera body 10
Cannot be energized.

In this state, when the battery 23B is loaded with the electrodes reversed, the positive electrode (not shown) of the battery 23B can be brought into contact with the negative contact 24a, but the battery 23A is Since the negative electrode 23b is not in contact with the positive contact portion 24b, the circuit is not energized. Furthermore, in this state, when the electrode of the dry battery 23A is returned to normal, the positive electrode (not shown) of the dry battery 23B is kept in contact with the negative contact portion 24a, and the positive electrode 23a of the dry battery 23A is connected to the positive contact. Although it contacts the part 24b, the dry battery 23A and the dry battery 23B are lined up with their electrodes facing in the same direction, so that the circuit is not energized. As described above, the battery storage room 22 of the present embodiment has two dry batteries 23A and 23B.
Unless each of them is loaded in a proper state, the circuit cannot be energized.

In the present embodiment, the present invention has been described with respect to a battery storage room of a camera. However, the present invention is not limited to this.
It is clear that the present invention can be applied to various electric appliances having a structure for accommodating a battery.

[0018]

As described above, according to the present invention, it is possible to provide a contact structure of a battery case that can simplify the structure and the assembling work. Furthermore, the distance between the fixing hook and the positioning protrusion is set smaller than the outer diameter of the battery, and the height is set smaller than the protruding height of the electrode having the convex shape of the battery, so that only when the battery is properly loaded. The circuit can be energized. In addition, since the fixing hook and the positioning projection of the electrical connection piece are used to prevent the reverse connection of the battery, there is no need to separately provide a projection for preventing the reverse connection or the like.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the opening / closing lid according to the present invention alone.

FIG. 2 is a cross-sectional view of the opening / closing lid taken along the line II-II in FIG. 1, together with the dry batteries loaded in the battery storage chamber.

1. FIG. 3 shows the dry battery of FIG.
FIG. 2 is a sectional view of the opening / closing lid taken along the line II-II.

FIG. 4 is a cross-sectional view showing an initial state when an electric connection piece is attached to the opening / closing lid.

FIG. 5 shows a state in which an electrically conductive contact piece is fixed to the opening / closing lid.
FIG. 5 is a sectional view taken along line VV in FIG. 1.

FIG. 6 is a schematic view of an electric conductive contact piece in a state where an insertion fixing hole is aligned with a fixing hook.

FIG. 7 is a schematic cross-sectional view showing an engagement relationship between an engagement hook portion of the electric conducting contact and a locking hook portion of the camera body, showing a state before the two are engaged.

FIG. 8 is a schematic cross-sectional view showing an engagement relationship between an engagement hook portion of the electric conductive contact piece and a locking hook portion of the camera body, and showing an engagement state of the both.

FIG. 9 is a front view showing the entire camera to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Camera main body 10a Locking hook part 21 Opening / closing lid (insulating base) 21b Rotating support shaft 21c Fitting concave part 21d Bending concave part 22 Battery case 24 Electric conduction contact piece 24a Negative side contact part 24b Positive side contact part 24c Spring projection 24d Engagement hook portion 24e Insertion fixing hole (fixing hole) 24f Fixing hole 24g Insertion hole 25 Fixing hook 25a Slide portion 25b Large diameter head 26a 26b 26c Positioning protrusion e f Bounding circle

──────────────────────────────────────────────────続 き Continued on the front page (56) References Japanese Utility Model 57-22731 (JP, U) Japanese Utility Model 63-125833 (JP, U) Japanese Utility Model 1-166330 (JP, U) Japanese Utility Model 4- 61857 (JP, U) Japanese Utility Model Showa 51-49818 (JP, U) Japan Patent Office Edition, “Technical Trend Series, Handbook of Machine Elements from the Viewpoint of Patent [Fixing]” (Showa 55-9-25) Invention Association p. 55-60 (58) Fields investigated (Int. Cl. ⁶ , DB name) G03B 17/02 H01M 2/10

Claims (3)

(57) [Scope of request for utility model registration] 1. A battery case in which an insulating base is provided with a flat plate-shaped electrically conductive contact in which an electrode provided at least at one end of a battery is in contact with the insulating base. And a positioning projection that abuts with and restricts movement in the plane direction,
A fixing hook that engages with the electrical conductive contact at a fixed position and regulates movement in the thickness direction thereof; and allows the electrical conductive contact to allow the fixing hook to penetrate therethrough. A fixing hole having a size that allows relative movement of the fixing hook and the electrical conductive contact piece in the planar direction in a state where the hook has penetrated is provided, and the positioning protrusion has the fixing hole. The penetrating fixing hook is provided at a position for moving in the fixing hole and abutting on the electric conductive contact piece in a state of being engaged with the electric conductive contact piece to regulate the movement in the plane direction. And the distance between the fixing hook and the positioning projection.
Is smaller than the outer diameter of the battery, and its height is
Is set smaller than the protruding height of the electrode having the convex shape of
Contact structure of the battery case, characterized in that there. 2. The contact structure for a battery case according to claim 1,
Oite, the battery case, a plurality of batteries, a battery case for housing such that the electrodes are opposite each said electrical conductive contact piece are each conducting at least two of the plurality of batteries The contact structure of the battery case, which is the contact to be made. 3. The contact structure for a battery case according to claim 2,
Here , the electric conduction contact piece is a contact point of a battery case, which is a contact point that connects the two batteries with electrodes of opposite polarities.