JP2015097391A - Mobile information terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a power break due to the contact break of a battery caused by a fall, an impulse or the like.SOLUTION: A mobile information terminal is electrically connected to a battery pack, having each contact point of one polarity, as either a positive electrode or a negative electrode, which is continuously provided in a manner of extending over a first surface of a substantially rectangular parallelepiped and a second surface orthogonal to the first surface, with a substantially L-shaped cross section. The positive and negative polarities respectively include a first connection terminal, elastically contacting to the contact point of the first surface side of the battery pack, and a second connection terminal elastically contacting to the contact point of the second surface side of the battery pack.

Description

  The present invention relates to a battery connection terminal structure characterized by a structure in which battery connection terminals are contacted from two or more directions as a method for preventing power supply interruption due to battery contact interruption due to a drop impact or the like.

  In a device such as a portable information terminal that operates on a battery, the battery pack moves minutely in the device due to an impact applied to the device, and a contact disconnection occurs between the contact point of the battery pack and the terminal side connection terminal There's a problem.

  Usually, measures are taken to increase the strength of the spring that holds the battery pack contacts at the terminal connection terminal, or to fix the battery pack so that it does not move in the terminal housing structure. If the battery pack is too large, it is difficult to attach or remove the battery pack, and there is a problem in that convenience is impaired.

  In addition, portable information terminals often employ an inexpensive and lightweight plastic casing due to demands from portability and cost, and there is a limit to robustness from the viewpoint of material.

  Furthermore, there is a problem that there is a combination in which the battery pack is loosely fixed due to minute variations in size of the spring, the connection terminal, the battery pack, and the apparatus housing.

  Therefore, Patent Documents 1 and 2 disclose an invention in which a curved elastic contact that is pressed against an electrode of a battery is provided on an electronic device body.

  Patent Document 3 shows a curved elastic contact that is pressed against an electrode of a battery on an electronic device body.

JP 2001-268811 A JP 2005-043578 A JP 2006-244737 A

  However, in the inventions disclosed in Patent Documents 1 and 2, each of the positive electrode and the negative electrode provided in the battery pack is provided on two orthogonal surfaces of the outer surface of the battery pack, and By providing an elastic contact that is pressed against two surfaces, the battery pack is held more securely. However, the elastic contact provided on the main body of the electronic device is a thin metal piece. Since the thing has an open end, there exists a problem that it is easy to deform | transform and break easily.

  The invention disclosed in Patent Document 3 does not hold the battery pack from two directions, and there is a problem that when the terminal device receives an impact, the battery pack easily shifts and contact disconnection may occur.

  The present invention has been made in view of the above, and an object of the present invention is to prevent a power supply disconnection due to a battery disconnection due to a drop impact or the like.

The portable information terminal according to the present invention is
A contact having a polarity and having a substantially L-shaped cross section is provided on each of the positive electrode and the negative electrode so as to straddle the first surface of the substantially rectangular parallelepiped and the second surface orthogonal to the first surface. A portable information terminal that is electrically connected to the battery pack,
The connection terminal includes a first connection terminal that elastically contacts the contact on the first surface side of the battery pack, and a second connection terminal that elastically contacts the contact on the second surface side of the battery pack, and a positive electrode It comprises in each of a negative electrode, It is characterized by the above-mentioned.

  According to the present invention, it is possible to prevent the power from being cut off due to the battery being cut off due to a drop impact or the like.

It is a front view of the portable information terminal concerning an embodiment of the invention. It is a rear view of the portable information terminal concerning an embodiment of the invention. It is a figure of the battery pack for portable information terminals concerning an embodiment of the invention. It is the figure which showed the mounting space vicinity of the battery pack of the portable information terminal which concerns on embodiment of this invention in the state which removed the battery pack. It is sectional drawing which looked at the connecting terminal from the side by the dotted line shown to 4-A of FIG. FIG. 6 is a diagram showing a state in which a battery pack is mounted on the cross-sectional view shown in FIG. 5. It is a figure which shows the structure of the battery pack connection terminal in the portable information terminal which concerns on embodiment of this invention.

[First Embodiment]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Here, FIG. 1 is a front view of the portable information terminal according to the embodiment of the present invention.

  As shown in FIG. 1, there is an LCD display device 11 in front of the portable information terminal of the present embodiment, and displays various information as a portable information terminal.

  Further, a key switch group 12 for operating the portable information terminal is provided in front of the portable information terminal of the present embodiment.

  FIG. 2 is a rear view of the portable information terminal according to the embodiment of the present invention. As shown in FIG. 2, there is a space for mounting the battery pack on the back of the portable information terminal of the present embodiment, and the battery pack and the battery pack cover 21 are mounted and used.

  FIG. 3 shows a battery pack for a portable information terminal according to the present embodiment. This battery pack is provided continuously so as to straddle a first surface of a substantially rectangular parallelepiped and a second surface orthogonal to the first surface, and a positive polarity contact having a substantially L-shaped cross section. And a battery pack having each of the negative electrode.

  As shown in FIG. 3, a contact 31 and a −contact 32 are provided, and the + contact 31 and the −contact 32 are contacts that can be contacted on two surfaces of the battery pack as viewed from the front and the upper surface. .

  FIG. 4 is an enlarged view of the vicinity of the battery pack mounting space of the portable information terminal according to the embodiment of the present invention with the battery pack removed.

  In FIG. 4, reference numerals 41 to 44 denote connection terminals connected to the contacts of the battery pack. In FIG.

  Both the + terminal A41 and the + terminal B42 are connected to a circuit to which a + power supply is connected inside the portable information terminal.

  Both the terminal A43 and the terminal B44 are connected to a circuit to which a power source is connected in the portable information terminal.

  FIG. 5 is a cross-sectional view of the connection terminal viewed from the side along the dotted line indicated by 4-A in FIG. As shown in FIG. 5, the + terminal A41 is installed in the upper direction of the battery pack, and the + terminal B42 is installed in the front direction of the battery pack. Although FIG. 5 shows the structure of only the + terminal, the − terminal is assumed to have the same structure. That is, the first connection terminal that elastically contacts the contact on the first surface side of the battery pack and the second connection terminal that elastically contacts the contact on the second surface side of the battery pack are respectively positive and negative. I have.

[Operation of First Embodiment]
The operation of the portable information terminal of this embodiment will be described with reference to FIG. FIG. 6 shows a state in which the battery pack is attached to the cross-sectional view shown in FIG.

  62 is the battery pack shown in FIG. Reference numeral 61 denotes a battery pack cover which is a lid of the battery pack storage unit. In FIG. 6, + terminal A41 and + terminal B42 are tensioned in the directions indicated by white arrows A and B in FIG. And the connection with the positive contact 31 of the battery pack is maintained.

  When an impact such as a drop is applied to the portable information terminal and the battery pack moves slightly in the direction of arrow A, when the battery pack moves at a speed exceeding the followability of the spring force of the + terminal A41, An instantaneous contact disconnection occurs between the terminal A41 and the + contact 31.

  Similarly, when the battery pack slightly moves in the direction of the arrow B, an instantaneous contact disconnection occurs between the + terminal B42 and the + contact 31.

  In the portable information terminal according to the present embodiment, when the battery pack slightly moves in the direction of the arrow A and the contact disconnection occurs between the + terminal A41 and the + contact 31, the + terminal B42 and the + contact 31 When the contact remains and the battery pack slightly moves in the direction of arrow B and a contact break occurs between the + terminal B42 and the + contact 31, the contact between the + terminal A41 and the + contact 31 remains, This prevents the occurrence of power supply interruption.

  Although FIG. 6 shows only the operation of the + terminal, it is assumed that the operation of the − terminal is the same.

  As described above, in this embodiment, the battery connection terminal is contacted from two directions, thereby improving the followability to the movement of the battery pack due to a drop impact or the like, and preventing the contact of the terminal from being disconnected. Can do.

[Second Embodiment]
In the second embodiment, the structure of the battery pack connection terminal shown in FIG. 5 in the first embodiment is changed to the structure shown in FIG.

  7 in FIG. 7 is a positive terminal A portion, 72 in FIG. 7 is a positive terminal B portion, and is a single curved leaf spring that is continuous with those having the same polarity, and is the + in the first embodiment. The same function as the terminal A41 and the + terminal B42 is assumed.

  That is, two curved portions are projected so as to correspond to the contacts of the battery pack, one curved portion elastically contacts the contact on the first surface side of the battery pack, and the other curved portion is the second curved portion of the battery pack. It contacts the contact on the surface side with elasticity.

  Although FIG. 7 shows the structure of only the + terminal, it is assumed that the − terminal has the same structure. In the second embodiment, as shown in FIG. 7, the connection terminal with the battery pack is configured by a single component with a leaf spring, and the operation is the same as in the first embodiment. To do. In the second embodiment, since the connection terminal is composed of one component, there is an advantage that the cost of the component can be suppressed compared to the case where two components are used as in the first embodiment. .

  Further, since the connection terminal is one component, there is an advantage that the circuit connection can be simplified as compared with the case where two components are connected.

11 LCD Display 12 Key Switch Group 21 Battery Pack Cover 31 + Contact 32 -Contact 41 + Terminal A
42 + terminal B
43-Terminal A
44-Terminal B
61 Battery pack cover 62 Battery pack 71 + Terminal A part 72 + Terminal B part

Claims (2)

A contact having a polarity and having a substantially L-shaped cross section is provided on each of the positive electrode and the negative electrode so as to straddle the first surface of the substantially rectangular parallelepiped and the second surface orthogonal to the first surface. A portable information terminal that is electrically connected to the battery pack,
The connection terminal includes a first connection terminal that elastically contacts the contact on the first surface side of the battery pack, and a second connection terminal that elastically contacts the contact on the second surface side of the battery pack, and a positive electrode A portable information terminal comprising each of the negative electrodes.   The first connection terminal and the second connection terminal are one curved leaf spring continuous with ones having the same polarity, and projecting at two locations so as to correspond to the contact points of the battery pack. One curved portion elastically contacts the contact on the first surface side of the battery pack, and the other curved portion elastically contacts the contact on the second surface side of the battery pack. The portable information terminal according to claim 1.

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