JPH06309521A - Ic memory card - Google Patents

Abstract

PURPOSE:To provide an IC memory card of which battery containing memory IC can be easily replaced and in which the space of a battery storing part in can be reduced order to increase the capacity. CONSTITUTION:The contacts are secured between a part of the side face of a battery 9 and a battery lead 3 and a battery cover 10 respectively in a battery storing part 8. At the same time, the engagement projection parts 14a and 15a of the elastic pieces 14 and 15 formed at both ends of the cover 10 are engaged with an engagement recess part 8c and an engagement hole 8d of the part 8 respectively. Then, a gap 16 is secured between a pawl part 14b formed at the tip of the piece 14 and a tip 8e of the side wall of the part 8. In such a constitution, be cause the battery 9 is directly stored in the part 8 so that the space of the part 8 is reduced, the area of a printed board 2 can be increased and, therefore, the large capacity is attained. Futhermore, the replacement of batteries can be facilitated owing to such a structure that the cover 10 can be easily removed from the part 8 with deformation of the piece 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC memory card having a memory IC and a memory backup battery (hereinafter simply referred to as a battery) incorporated therein, and more particularly to a battery exchange type IC memory card.

[0002]

2. Description of the Related Art An IC memory card is a portable information storage medium having a built-in memory IC such as RAM and ROM.
It is used in various fields. In recent years, there has been a demand for SRAM cards having a large storage capacity, that is, a large capacity, mainly in the fields of medical equipment and the like. In these large-capacity SRAM cards, many memory ICs are mounted on the printed circuit board.
Must be mounted, and has a structure in which the battery can be replaced in order to retain the data stored in the memory IC.

The structure of a conventional battery exchange type IC memory card will be described below. FIG. 3 shows a conventional battery exchange type I.
It is a partial top view of a C memory card. In FIG. 3, reference numeral 1 is a case that houses the printed circuit board 2. The printed circuit board 2 is mounted with a memory IC, a decoder IC, a connector (not shown), and the battery leads 3 and 4 are fixed. Reference numeral 5 denotes a molded member of the case 1, and an upper cover 6 and a lower cover 7 are fixed to the upper surface and the lower surface, respectively. Reference numeral 8 denotes a battery housing portion that opens to the end of the case 1, and is formed by side walls 8a and 8b that are a part of the molding member 5 and covers 6 and 7. Reference numeral 9 denotes a battery, which is mounted on a battery mounting portion 31 formed on the battery holder 30. The battery holder 30 is mounted in the battery housing portion 8, and the front and back surfaces of the battery 9 are detachably connected to the pair of battery leads 3 and 4 in the battery housing portion 8, respectively. 32 and 33 are battery holders 30
Elastic pieces formed on both ends of the engaging projection 32
a and 33a. The engaging protrusions 32a and 33a are the engaging recesses 8c provided on the side walls 8a and 8b of the battery housing 8, respectively.
8f is engaged. 32b and 33b are elastic pieces 32 and 33.
A slight gap 34, 35 is formed between the tip of the side wall 8a, 8b by the claw portion at the tip. When replacing the battery 9, insert the tip of your finger into the gap 34, 35 and
The elastic pieces 32, 33 are deformed by pushing 2b, 33b, and the engaging projections 32a, 33a and the engaging recesses 8c, 8
The battery holder 30 is disengaged from the battery holder f and is taken out from the battery housing 8.

[0004]

However, in the above-mentioned conventional structure, since the battery holder has the battery mounting portion for mounting the battery, the space of the battery storing portion in the case is large, and therefore the area of the printed circuit board is large. However, the mounting area for memory ICs is reduced, which prevents the capacity from increasing, and when replacing the battery, the two claws of the battery holder must be removed at the same time, which is a troublesome task. Had.

The present invention solves the above-mentioned problems of the prior art by reducing the space of the battery housing portion in the case and increasing the mounting area of the memory IC or the like on the printed circuit board.
It is intended to realize a large-capacity IC memory card and facilitate battery replacement work.

[0006]

To achieve this object, the IC memory card of the present invention has a battery holder in which the battery holding portion of the battery holder is eliminated, and one side of the battery is provided with one of the battery leads. While making contact with the battery lid, elastic pieces are respectively formed on both ends of the battery lid, and engaging protrusions of different sizes provided on the elastic pieces are provided on the side wall of the battery accommodating recess and It is configured such that it is removably engaged with the engagement hole, and a slight gap is provided between the claw portion provided at one end of the elastic piece and the tip of the side wall of the battery storage portion.

[0007]

With this configuration, the battery can be directly stored in the battery storage portion, so the space of the battery storage portion is reduced, and the mounting area of the memory IC or the like on the printed circuit board can be increased accordingly, and a large capacity IC memory card can be obtained. Furthermore, by inserting the tip of your finger into the gap between the claw part of one elastic piece of the battery lid and the tip of the side wall of the battery storage part and pressing the claw part lightly, the elastic piece is deformed and the battery lid is opened. You can easily remove the battery from the battery compartment, and the elastic force of the battery leads pushes the battery into the inlet of the battery compartment, and the battery cover can be attached to the battery compartment by pushing it in lightly with your fingertips. An IC memory card that is easy to work with can be realized.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a partial plan view of an IC memory card according to an embodiment of the present invention, and FIG. 2 is a partial perspective view of the IC memory card with a battery taken out. 1 and 2, 1 is a case, 2 is a printed circuit board, 3 and 4 are battery leads, 5 is a case molding member, 6 and 7 are case covers, 8 is a battery housing, and 9 is a battery. Has the same configuration as the conventional example, but the battery 9 is directly housed in the battery housing portion 8, the battery lead 3 is in contact with the side surface of the battery 9, and the battery lead 4 is in contact with the back surface of the battery 9. .

A battery lid 10 is attached to the battery housing portion 8 to prevent the battery 9 from being pushed out of the battery housing portion 8 by the elastic force of the battery lead 3. Reference numeral 11 denotes a battery contact surface of the battery lid 10 that contacts a part of the side surface of the battery 9, and has an arc shape that is substantially the same as the shape of the battery 9 so as to stably contact the side surface of the battery 9. Since grooves 12 and 13 are provided near both ends of the battery lid 10, elastic pieces 14 and 15 supported by the battery contact surface 11 are formed at both ends of the battery lid 10. 14a and 15a are elastic pieces 14 and 15 respectively.
The engaging protrusions of different sizes provided on the
It is formed on the surface opposite to 2 and 13. Engaging protrusion 14
Each of a and 15a is detachably engaged with an engaging concave portion 8c provided on the side wall 8a of the battery housing portion 8 and an engaging hole 8d provided on the side wall 8b. The engagement hole 8d penetrates the side wall 8b and opens on the outer peripheral surface of the case 1. Reference numeral 14b is a claw portion provided at the tip of the elastic piece 14, and when the battery lid 10 is mounted in the battery housing portion 8, a slight gap 16 is formed between the claw portion and the tip 8e of the side wall 8a.

In the above-mentioned structure, when the battery is replaced, the claw portion 14b and the tip 8e of the side wall of the battery housing portion 8e.
By inserting a nail of a fingertip into the gap 16 between and, and lightly pushing the claw portion 14b, the elastic piece 14 is deformed in the direction of the groove 12, so that the engaging protrusion 14a is first disengaged from the engaging recess 8c, and The engagement protrusion 15a is disengaged from the engagement hole 8d, and the battery lid 10 can be pulled out from the battery storage portion 8. The side surface of the battery 9 is pushed by the elastic force of the battery lead 3,
A part of the battery 9 is pushed out of the battery storage portion 8. After replacing the battery 9, when the battery lid 10 is lightly pushed into the battery housing portion 8 with a finger, the elastic pieces 14 and 15 are deformed and the engaging protrusions 14a and 15a engage with the engaging concave portion 8c and the engaging hole 8d. Then, the mounting of the battery lid 10 is completed. Further, the engagement protrusion 14a is made larger than the engagement protrusion 15a, so that the engagement protrusion 1
Since the battery cover 4a cannot engage with the engagement hole 8d, the battery cover 10 is not accidentally mounted on the left and right.

As described above, according to the present embodiment, the battery 9 is directly housed in the battery housing portion 8. Therefore, the space of the battery housing portion 8 in the case 1 is reduced, and the printed circuit board 2 is provided.
Large-capacity IC because the mounting area of memory ICs of
A memory card can be realized, and the engaging protrusions 14a, 15 of the elastic pieces 14, 15 formed at both ends of the battery lid 10 can be realized.
a is engaged with an engaging recess 8c and an engaging hole 8d formed in the side walls 8a and 8b of the battery storage part 8 and is provided between the claw portion 14b provided at the tip of the elastic piece 14 and the tip 8e of the side wall. By providing the gap 16, the battery lid 10 can be easily attached and detached, so that an IC memory card in which battery replacement work is easy can be realized.

[0013]

According to the present invention, there is provided a case having a battery storage portion,
A printed circuit board housed in the case, a battery lead fixed to the printed circuit board and in contact with the battery, and a battery lid mounted in the battery housing part are provided. One of the battery leads and the battery lid are provided on a part of the side surface of the battery. In addition to making contact, elastic pieces are formed on both ends of the battery lid, and engaging protrusions of different sizes provided on each elastic piece can be freely attached to and detached from the engaging recesses and engaging holes provided on the side wall of the battery housing. And a gap is provided between the claw portion provided at one end of the elastic piece and the tip of the side wall of the battery storage portion.

Therefore, according to the present invention, since there is no portion for mounting the battery on the battery lid and the battery can be directly stored in the battery storage portion, the space of the battery storage portion in the case is reduced, and the memory IC of the printed circuit board or the like. The mounting area is increased, and a large-capacity IC memory card can be realized. By inserting the tip of your finger into the gap between the claw of the battery cover and the tip of the side wall of the battery housing, and pressing the claw lightly, You can easily pull out the battery lid from the battery compartment, the battery is pushed out of the battery compartment by the elastic force of the battery leads, and the battery lid can be attached to the battery compartment by pushing it in lightly with your fingertips. It has excellent effects such as realization of an easy IC memory card.

[Brief description of drawings]

FIG. 1 is a partial plan view of a memory card according to an embodiment of the present invention.

FIG. 2 is a partial perspective view of the IC memory card with a battery removed.

FIG. 3 is a partial plan view of a conventional IC memory card.

[Explanation of symbols]

 1 Case 2 Printed Circuit Board 3,4 Battery Lead 8 Battery Housing 8a, 8b Side Wall 8c Engagement Recess 8d Engagement Hole 8e Side Wall Tip 9 Battery 10 Battery Lid 14,15 Elastic Piece 14a, 15a Engagement Protrusion 14b Claw 16 gap

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H01M 2/10 P 8821-4K

Claims (1)

[Claims] 1. A case having a battery housing, a printed circuit board housed in the case, a pair of battery leads provided on the printed circuit board and in contact with a battery for memory backup, and detachable from the battery housing. A battery lid, one of the battery leads and the battery lid are brought into contact with a part of a side surface of the memory backup battery, and elastic pieces are provided at both ends of the battery lid. Claws provided at one end of the elastic piece by engaging engagement projections provided on one side of the elastic piece with detachable engagement with engagement recesses and engagement holes provided on the side wall of the battery storage section. And a tip of the side wall, a gap is provided between the IC memory card.