JP4651077B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device such as a camera provided with a battery chamber for storing a battery.

  It is known that an oxide film may be formed on the battery terminal or a foreign substance such as oil may adhere to the battery terminal, which causes a conduction failure. Therefore, in order to remove these foreign substances, it is necessary to rub the battery terminal surface with a file or the like.

However, the above processing is burdensome for the user and is troublesome. Therefore, in a series of operations in which a battery is loaded in an electronic device and the battery cover is closed, it is necessary to provide a battery housing structure that can provide the same effect as rubbing the battery terminal surface with a file. Come.

Therefore, conventionally, of the contact pieces provided in the battery chamber of the electronic device, the contact portion that contacts the battery terminal is sharpened like a pin, and the force of pushing the battery when the battery is stored in the battery chamber The contact portion and the battery terminal surface are rubbed. Such a configuration is found, for example, in an electronic device that requires a high voltage. There is also a configuration in which the oxide film attached to the battery electrode is removed by rotating the battery (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 6-44016 (paragraph number 0008)

  In recent years, power consumption tends to increase with the increase in specifications of electronic devices. However, in electronic devices, it is difficult to reduce the operation time even if the power consumption increases.

  In particular, there are many types of digital cameras using an AA battery as a power source, although a high voltage is temporarily required. Thus, when AA batteries are used, it is a problem to prevent conduction failure that causes a decrease in voltage in electronic devices and to reduce contact resistance.

  However, with the shape of the conventional contact portion, the battery terminal is loaded without rubbing due to the frictional force only by the action of the force at the time of inserting the battery, and the oxide film and oil stains generated on the battery terminal surface are good. May not be removed. In addition, when the battery comes into contact with the contact piece, it is inclined with respect to the battery insertion direction and comes into contact with the wall surface of the battery chamber, so that the contact pressure between the battery terminal and the contact piece of the electronic device decreases, and the contact resistance is reduced. There is a problem such as increasing.

  Accordingly, an object of the present invention is to provide an electronic device that can easily remove an oxide film or dirt generated on the battery terminal surface or reduce the contact resistance between the battery terminal surface and the contact piece of the electronic device. It is to provide.

In order to solve the above problems, an electronic apparatus of the present invention, first has a battery compartment for accommodating a battery, and a lid for opening and closing the battery compartment, the lid is a base of said lid 1 and members of the disposed inside the first member, contact a second member contact member is mounted in contact with the electrodes to the battery housed in the battery compartment, said contact member to the electrode of the battery in a state of being, in conjunction with the operation you close the lid, and having a drive mechanism for driving the second member to be displaced relative to the first member.

According to the present invention, since the contact tactile member can be displaced while being in contact with the electrode of a battery housed in the battery chamber, for example, foreign matter attached to the electrode (oxide film, dirt, etc.) can be removed.

  Examples of the present invention will be described below.

  FIG. 10 is a perspective view of a digital camera (electronic device) which is an embodiment of the present invention. In the figure, reference numeral 101 denotes a camera body, and a lens barrel 102 capable of zooming is provided in the center of the front surface of the camera body 101.

  In the camera body 101, for example, an image sensor (CCD, CMOS image sensor, etc.) that photoelectrically converts an optical image to generate image data, an optical low-pass filter, and a control circuit (not shown) that controls the operation of the entire camera. Has been placed.

  A release button 103 is provided on the upper surface of the camera body 101. When the release button 103 is pressed halfway, a shooting preparation operation (focus detection operation and photometry operation) is started. When the release button 103 is fully pressed, a shooting operation (with an image sensor) is started. Recording of the read image data onto the recording medium is started.

  A finder window 104 of the finder optical system is provided on the front surface of the camera body 101, and the photographer can observe the subject image through the finder optical system. On the right side of the finder window 104, a photometric window 105 for measuring the luminance of the subject is provided.

  The photometric result is sent to a control circuit in the camera body 101, and an exposure value (shutter speed, aperture value) is calculated by the control circuit. Reference numeral 106 denotes a light emission window that forms a strobe device that irradiates a subject with illumination light.

  A battery lid 6 that opens and closes a battery chamber, which will be described later, is rotatably attached to the bottom surface of the camera body 101.

  FIG. 1A is a view showing the vicinity of the camera battery chamber of this embodiment, and FIG. 1B shows a battery contact piece provided in the battery chamber. FIG. 2 is a view showing the contact state of the battery and the battery contact piece when the battery is housed in the battery chamber, and FIG. 2A is a view seen from the x direction (the thickness direction of the camera). , (B) are views as seen from the y direction (the width direction of the camera). The z direction indicates the height direction of the camera.

  The structure of the battery chamber will be described with reference to FIGS. Since the structure other than the battery chamber is the same as that of a conventional camera, description thereof is omitted.

  Reference numeral 1 denotes a battery chamber provided in the camera body 101, which can accommodate the AA batteries 2. Reference numeral 3 denotes a battery contact piece provided in the battery chamber 1, which comes into contact with the electrode of the battery 2 housed in the battery chamber 1.

  As shown in FIG. 1B and FIG. 2, the battery contact piece 3 is formed by bending a single metal plate having elasticity, and has an arm portion 3a. In addition, a contact portion 3 b that contacts the electrode of the battery 2 is formed on the arm portion 3 a. As shown in FIG. 2B, the contact portion 3b is formed by bending a part of the side edge of the arm portion 3a to the upper surface side of the camera body 1, and the tip of the contact portion 3b It is semicircular or sharp when viewed in the height direction.

  Here, the width and thickness of the arm portion 3a are set to dimensions that allow a sufficient contact pressure to be applied to the electrode portion of the battery 2 via the contact portion 3b. Moreover, the convex elastic part 3c is formed in the surface on the opposite side to the surface in which the arm part 3a was formed among the battery contact pieces 3. FIG.

In FIG. 1A, reference numeral 4 denotes a battery contact piece provided on the battery lid 6, which comes into contact with the negative electrode and the positive electrode of the battery 2 housed in the battery chamber 1. Here, four batteries 2 are accommodated in the battery chamber 1, and these batteries 2 are connected in series by battery contact pieces 3 and 4 .

  Next, a method for mounting the battery contact piece 3 in the battery chamber 1 will be described.

  First, the battery contact piece 3 is inserted into a groove (not shown) provided in the battery chamber 1 while being slid, and incorporated in the battery chamber 1. Here, the battery chamber 1 is provided with a hole (not shown), and the elastic part 3c of the battery contact piece 3 is fitted into the hole. By fitting the elastic portion 3c into the hole portion in this way, the elastic portion 3c is fixed in the hole portion, and the battery contact piece 3 can be attached to the battery chamber 1 without backlash.

  Further, a lead wire (not shown) disposed in the camera body 101 is soldered to the soldering portion 8 provided on the battery contact piece 3. Thereby, the electric power of the battery 2 is supplied to various electric components provided in the camera body 101 via the lead wires.

  Next, the structure of the battery lid 6 will be described with reference to FIG. A lock lever 12 (drive mechanism) is held on the outer lid 11, and the lock lever 12 is in a biasing direction of the lock spring 13 (drive mechanism) with respect to the outer lid 11 (longitudinal direction of the lock lever 12). Is only movable. By sliding the lock lever 12, the battery cover 6 can be opened and closed. The lock lever 12 is urged by a lock spring 13, and when the battery cover 6 is closed, the lock lever 12 slides by the urging force to lock the battery cover 6.

  The outer lid 11 is formed with a guide groove 22 that engages with a guide protrusion 16 formed at the end of the inner lid 15 (second member). The battery lid 4 is formed on the inner lid 15. Are fixed by screws (not shown).

  The base plate 14 (first member) is supported by the shaft portion of the camera body 101 that passes through the inside of the cylindrical portion 14a formed at the end thereof. Further, the base plate 14 is formed with a first L-shaped groove portion 19 and a second L-shaped groove portion 20, and these L-shaped groove portions 19, 20 are respectively formed on the lock lever 12. The first protrusion 17 and the second protrusion 18 are engaged.

Further, a guide groove portion 21 extending along the long side direction of the L-shaped groove portion 19 is formed at an end portion of the base plate 14, and the guide groove portion 21 is formed in the lower side of the figure formed on the battery contact piece 4. The guide portion 5 extending to the side engages.

  Next, the operation when the battery cover 6 is driven from the open state to the closed state will be described with reference to FIGS. Here, FIG. 4 to FIG. 7 are diagrams showing behaviors until the battery cover 6 is rotated from the open position to the closed position and locked to the closed position.

First, the battery cover 6 is rotated around the axis L as shown in FIG. At this time, the outer lid 11, the inner lid 15, and the battery contact piece 4 rotate together. FIG. 5 shows a state after the battery cover 6 has finished rotating around the axis L. Although not shown, in the state of FIG. 5, that is, in the state where the battery lid 6 has finished rotating around the axis L, the battery contact piece 4 fixed to the inner lid 15 is in contact with the electrode surface of the battery.

  Next, as shown in FIG. 6, the outer lid 11 is slid by a distance Δ1 in the arrow X direction along the guide groove portion 22 of the outer lid 11. At this time, the inner lid 15 does not slide. Here, the reason why the outer lid 11 can be slid is to ensure a sufficient rotation angle when the battery lid 6 is opened. That is, if the outer lid 11 is not slid in the direction opposite to the arrow X direction when the battery lid 6 is rotated in the opening direction, the battery lid 6 hits the battery chamber 1 and a sufficient rotation angle cannot be obtained.

  Further, similarly, when the battery compartment 1 has a hooking claw (not shown) for preventing the battery lid 6 from rattling if the outer lid 11 is not sufficiently slid, the battery lid 6 and the hooking claw This is because a sufficient amount of catch cannot be obtained. Furthermore, if the inner lid 15 slides more than a certain amount of movement, the battery contact piece 4 is detached from the positive terminal of the battery as shown in FIG. 9, and once removed, the battery lid 6 can be closed. Because it disappears. At this time, the battery contact piece 4 does not slide with respect to the electrode surface of the battery.

When the outer lid 11 is slid in the arrow X direction by a distance Δ1, the longitudinal end surface of the guide groove 22 abuts on the guide projection 16 of the inner lid 15 and further pushes the outer lid 11 in the arrow X direction from this state. When the guide portions 5 of the battery contact piece 4 in the guide groove 21 of the base plate 14 by being guided, the outer lid 11, the inner lid 15 and the battery contact piece 4 is slid in the arrow X direction in an integrated manner.

As described above, since the battery contact piece 4 is in contact with the battery electrode when the rotation around the axis L is completed, the battery contact piece 4 slides in the arrow X direction from this contact state. The battery contact piece 4 slides with a certain amount of urging force with respect to the electrode surface of the battery. Thereby, the oxide film, dirt, etc. produced on the electrode surface of the battery can be efficiently scraped off, and the occurrence of poor battery conduction can be prevented.

Guide portion 5 of the battery contact piece 4 is in contact with the end of the arrow X direction of the guide groove 21, when the sliding operation of the arrow X direction is completed, as shown in FIG. 7, the lock lever 12 is first L-shaped The battery lid 6 is locked by moving in the arrow Y direction along the short side direction of the groove-shaped groove 19 and the second L-shaped groove 20. Note that, unlike the modified example described later, in this embodiment, the outer lid 11 and the inner lid 15 do not move even when the lock lever 12 is moved in the arrow Y direction.

  A modification of the above embodiment will be described. First, the height dimensions of the first and second protrusions 17 and 18 are set to be larger than the thickness of the base plate 14, and these protrusions 17 and 18 are not formed on the back side of the inner lid 15. Engage with the illustrated straight groove. These rectilinear grooves are formed along the long side direction of the first L-shaped groove 19 formed in the base plate 14.

  Next, the behavior until the battery cover 6 of this modification is rotated from the open position to the closed position and locked to the closed position will be described. However, the behavior from when the battery cover 6 is rotated to the closed position until the sliding operation of the battery cover 6 in the arrow X direction is almost the same as in the above-described embodiment, and thus the description thereof is omitted.

In the state shown in FIG. 6, that is, the sliding operation of the outer lid 11, the inner lid 15 and the battery contact piece 4 in the arrow X direction is completed, the first and second protrusions 17 and 18 of the lock lever 12 are respectively The first and second L-shaped groove portions 19 and 20 are located at a portion where the long side portion and the short side portion intersect.

In this state, the lock lever 12 receiving the urging force from the lock spring 13 moves in the arrow Y direction by a distance Δ2 along the short side direction of the first and second L-shaped groove portions 19 and 20. At this time, the first and second protrusions 17 and 18 of the lock lever 12 are respectively engaged with the respective rectilinear grooves extending along the long side direction of the first L-shaped groove 19 of the inner lid 15. Therefore, the inner lid 15 moves together with the lock lever 12 in the arrow Y direction.
Next, the behavior of the inner lid 15 moving in the arrow Y direction will be described in detail with reference to FIG.

  In FIG. 8, the solid line indicates a state before the inner lid 15 slides in the arrow Y direction, and the broken line indicates a state after the inner lid 15 slides in the arrow Y direction.

  The battery contact piece 4 is screwed to the inner lid 15 and is in contact with the electrode of the battery 2 accommodated in the battery chamber 1, so that it slides on the electrode of the battery 2 as the inner lid 15 slides. While moving in the arrow Y direction by the distance Δ2. Thus, by sliding the lock lever 12 in the direction of the arrow Y, the electrode of the battery 2 can be rubbed by the battery contact piece 4, so that foreign matter (oxide film, dirt) attached to the electrode can be removed. .

  Here, the distance Δ2, which is the amount of displacement of the battery contact piece 4 in the arrow Y direction, is set to be smaller than the dimension of the electrode of the battery 2 in the arrow Y direction. Therefore, even if the lock lever 12 is slid in the arrow Y direction, the contact of the battery contact piece 4 with the electrode is not cut off.

  In the above-described embodiments and modifications, the inner lid 15 is slid, but the electrode may be rubbed against the battery contact piece 4 by rotating the inner lid 15, for example.

  The present invention is not limited to a digital camera, and can be applied to various electronic devices such as a silver salt camera, a remote control device, and a recording device.

The figure which mainly showed the structure of the battery chamber vicinity among the digital cameras of a present Example. In this example, a diagram showing the contact state of the battery and the battery contact piece when the battery is inserted The disassembled perspective view of the battery cover rotatably supported by the digital camera which is an Example of this invention. The figure which shows the behavior of the battery cover in an Example. The figure which shows the behavior of the battery cover in an Example. The figure which shows the behavior of the battery cover in an Example. The figure which shows the behavior of the battery cover in an Example. Operation | movement explanatory drawing of the inner lid which slides. The figure which showed the state when the battery contact piece of the battery cover in an Example disconnected the + terminal of the battery. The external appearance perspective view of the camera of an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Battery chamber 1a Hole part 2 AA battery 3 Battery contact piece 3a Battery contact piece arm part 3b Battery contact piece contact part 4 Battery cover battery contact piece 6 Battery cover 8 Soldering part 11 Outer cover 12 Lock lever 13 Lock spring 14 Base plate 15 Inner lid 22 Guide groove

Claims (4)

Has a battery chamber for accommodating a battery, and a lid for opening and closing the battery compartment,
The lid is
A first member that is a base of the lid;
A second member disposed inside the first member and having a contact member attached to an electrode of a battery housed in the battery chamber;
In a state where the contact member is brought into contact with the electrodes of the battery, a drive mechanism in conjunction with the operation you close the lid, to drive the second member to be displaced relative to the first member An electronic device comprising: Has a battery chamber for accommodating a battery, and a lid for opening and closing the battery compartment,
The lid is
A first member that is a base of the lid,
A second member disposed inside the first member and having a contact member attached to an electrode of a battery housed in the battery chamber attached thereto;
A locking mechanism that locks the lid in a closed state;
A drive mechanism that drives the second member to displace relative to the first member in conjunction with the operation of the lock mechanism in a state where the contact member is in contact with the electrode of the battery. An electronic device characterized by that.   The electronic device according to claim 1, wherein the driving mechanism slides the second member with respect to the first member.   3. The electronic apparatus according to claim 1, wherein a displacement amount of the second member is smaller than a size of the electrode in a displacement direction of the second member.