JPH0579427U - Card holding device - Google Patents

Abstract

(57) [Abstract] [Purpose] The object of the present invention is to improve the assembling ability by simply changing the shape of the leaf spring and prevent the settling of the spring.
An object of the present invention is to provide a card holding device in which the proper insertion position of the card can be confirmed, the reading and positioning of the card can be reliably performed, and the conventional device can be used as it is. The card holding device according to the present invention mainly includes a card mounting portion, a leaf spring disposing portion, and a leaf spring, and the leaf spring 30 has an engaging protrusion 31 formed at the center thereof. It is formed in a substantially chevron shape, and locking portions 33 are formed at both ends. The leaf spring arranging portion 20 has an opening 21 formed at a side portion of the card mounting portion 10, and a gap 2 is formed at an end portion side of the opening portion 21.
2 has a pair of wall portions 23 arranged via the plate spring 3
0 from the opening 21 to the card mounting portion 10
It is arranged so that it can move slightly toward the side in the card insertion and removal direction,
The engaging concave portion C1 of the card C and the engaging protrusion 31 are engaged with each other to hold and prevent the card from coming off. At this time, the one locking portion 33 of the leaf spring 30 is formed with a locking projection 33c for suppressing movement in the card inserting / removing direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a non-contact type IC card holding device, and more particularly to a card holding device suitable for a non-contact type memory card such as a digital data storage device having a waterproof function in a surveying instrument.

[0002]

[Prior Art]

 Conventionally, as a card holding device for inserting and holding a memory card, a holding device using a leaf spring is known in consideration of downsizing and assembling. This will be described with reference to FIG. 4 and FIGS. 8 to 11. The holding device is arranged on the side surface of a device such as a surveying instrument as shown in FIG. 4, and the holding device shown in FIG. A card mounting portion 10 is formed, and the card mounting portion 10 is composed of walls 11, 12, 13, 14, 15 and a wall on the front surface side of the card and a wall on the back surface side of the card (all not shown). ing. As shown in FIG. 8, the leaf spring 50 has a generally chevron shape when viewed from the side, has locking portions 53, 53 formed at both ends, and a curved R portion 51 formed substantially at the center of the chevron. There is. On the other hand, an opening 31 is formed between the walls 12 and 13, and an adjacent wall 23 is provided upright at the end of the opening 31 of the walls 12 and 13 with a gap 22 therebetween. A locking portion 53 formed at both ends of the leaf spring 50 is regulated and held in a gap 22 between the wall 13 and the wall portion 23. The surface of the card opposite to the transmitting and receiving side of the card is pressed by a spring 16 to urge the card toward the transmitting and receiving side. The card has front and back sides, and a groove (not shown) is formed on the back side so that it cannot be inserted.

In the above structure, when the card C is inserted, as shown in FIG. 8, the leaf spring 50 is pushed by the corner portion of the card C and is flexed, and the curved R portion 51 is placed on the side surface of the card C. As the card slides, the end portions of the card come into contact with the walls 14 and 15, and as shown in FIG. 9, they engage with the recess C1 formed on the side surface of the card C and are prevented from coming off. When the curved R portion 51 of the leaf spring 50 engages with the concave portion C1 of the card C, a click feeling of a snap is obtained, and the inserted state can be confirmed.

[0004]

[Problems to be solved by the device]

 However, the conventional techniques shown in FIGS. 8 to 11 have the following disadvantages. That is, in the state before the card is inserted, the leaf spring 50 pushes the side surface of the card without fixing the both ends in order to prevent the spring from being set, and the leaf spring 50 seems to be stretched. A gap is formed between the portion 53 and the wall portion 23 and moves when the card is inserted. For this reason, the leaf spring 50 has the locking portions 53 formed at both ends thereof regulated by the wall portion 23 and the walls 11 and 12, but is pressed by the card C when the card C is inserted. The leaf spring 50 is flexible, and as shown in FIG. 9, the locking portion 53 is extended in the direction of arrow X, and in this state, the locking portion 53 is engaged with the recess C1 of the card C. .. In such a state in which the leaf spring 50 is flexible and the locking portion 53 is not regulated by the wall portion 23, the leaf spring 50 moves according to the insertion state of the card C. Positioning of the card C by means of 50 makes the position of the card C unstable.

Accordingly, when the card C is inserted, the leaf spring 50 is pushed by the card C and slides, and the card C is inserted to a position where it comes into contact with the walls 14 and 15, as shown in FIG. In some cases, the curved R portion 51 may not engage with the recess C1. In such a state, there is a problem that the insertion state cannot be confirmed because there is no click feeling and it is unclear whether or not the insertion position is proper.

The object of the present invention is to improve the assembling ability by only changing the shape of the leaf spring, prevent the spring from being damaged, and confirm the proper insertion position of the card to determine the reading position of the card. This is to provide a card holding device that can reliably perform the above and can use the conventional device as it is.

[0007]

[Means for Solving the Problems]

 A card holding device according to the present invention is a holding device for detachably holding a card having engagement recesses formed on its sides, and has an engaging protrusion formed at the center to be formed in a roughly chevron shape and to be engaged at both ends. A leaf spring with a stopper is formed, a card mounting part that holds the card in a removable manner, an opening is formed on the side of the card mounting part, and a gap is provided on the end side of this opening. And a leaf spring disposing portion having a pair of wall portions that are arranged so that the engaging protrusion of the leaf spring can be slightly moved in the card insertion / removal direction from the opening toward the card mounting portion. In the card holding device in which the engaging concave portion of the card and the engaging projection portion are engaged to hold and prevent the card from coming off, one of the locking portions of the leaf spring moves in the card inserting / removing direction. A restricting portion that suppresses Parts are those having the structure of arranging the. Further, the restricting portion that restrains the movement of the engaging portion in the card insertion / removal direction is a claw portion cut and raised on the side of the arrangement portion of the leaf spring, and this claw portion is formed on the wall of the leaf spring arrangement portion. It is preferable to arrange so as to pierce.

[0008]

[Action]

 In the present invention, since the regulating portion for suppressing the movement in the card inserting / removing direction is formed on one of the retaining portions of the leaf spring and the retaining portion of the leaf spring is arranged in the gap between the leaf spring disposing portions, When the card is inserted, the leaf spring is first pushed by the corner of the card and is flexible. At this time, since the restriction portion is formed on one of the locking portions of the leaf spring, the locking portion on the regulating portion side does not move, but the locking portion of the leaf spring on the side where the regulating portion is not formed is Move through the gap in the leaf spring installation area. Then, the engaging protrusion of the leaf spring is pushed to slide on the side surface of the card, the card end abuts the wall, and engages with the engaging concave portion formed on the side surface of the card to come off. Will be stopped. In this way, the position of the engaging protrusion of the leaf spring is always engaged with the engaging concave portion of the card at a fixed position because the movement of the one locking portion of the plate spring is restricted. Therefore, by simply changing the leaf spring, spring fatigue of the leaf spring can be prevented, the proper insertion position of the card can be confirmed, and the reading and positioning of the card can be surely performed, so that the conventional device can be used as it is.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, and can be variously modified within the scope of the present invention.

FIGS. 1 to 7 show an embodiment of a card holding device according to the present invention. The card holding device according to the present embodiment includes a card C having an engaging recess C1 formed on its side. It is a holding device S that is detachably held, and is an example formed on a side surface of a surveying instrument, as shown in FIG. In the holding device S of this example, a substrate of an electronic circuit is arranged on a sliding surface which is inserted so as to face a transmitting / receiving unit of a card, and a surface whose surface is coated with resin and a wall 11 and 12 which is inserted. , 13, 14 and 15, a spring 16 for pressing the card toward the electronic circuit side, a leaf spring 30 for positioning the card and also for preventing the card from coming off, and an arranging portion 20 as main constituent elements.

FIG. 1 is a schematic exploded perspective view for explaining a schematic assembly of a leaf spring 30 in which the surveying instrument main body wall is omitted from the surveying instrument main body wall side. The card mounting portion 10 of this example is shown in FIG. As shown, it is composed of walls 11, 12, 13, 14, and 15, a spring 16 that presses against the card receiving / sending surface, and a wall (not shown) on the back side of the card. The card mounting portion 10 is formed to be slightly larger than the length and width of the card C to be inserted so that the card C can be smoothly inserted and removed.

As shown in FIG. 3, the leaf spring disposing portion 20 of the present example has an opening 21 formed between the walls 12 and 13 of the card mounting portion 10 and respective end portions of the opening 21. It is composed of wall portions 23, 23 provided on the side with a gap 22 therebetween. The gap 22 is slightly wider than the plate thickness of the plate spring 30 described below.

The leaf spring 30 of this embodiment has a generally chevron shape in side view, and an engaging protrusion 31 is formed at a central position of the chevron shape. The leaf spring 30 is connected to both free end sides of the leaf spring 30 via coupling portions 32. A stop 33 is formed. The locking portion 33 of the present example is a flat portion 33a positioned in the gap 22 when the card C is not inserted, and an abutting portion which is bent at a substantially right angle from the flat portion 33a and in a direction opposite to the engaging projection 31. And the portion 33b. The locking portion 33 of this example is provided on one of the locking portions 33 (upper side of FIG. 1 in this example) of the leaf spring 30 as a restricting portion for restraining movement in the card inserting / removing direction. Projecting portions 33c, which are opposed to each other and project in the same direction as the contact portion 33b, are formed at a predetermined interval. In the case of this example, this predetermined interval is formed to be slightly larger than the distance Y (see FIG. 2) of the wall portion 23 in the card insertion / removal direction.

When assembling the leaf spring 30, as shown in FIG. 1, the flat portion 33a, which is the engaging portion 33 of the leaf spring 30, is positioned in the gap 22. At this time, one engaging portion 33 is engaged. One wall portion 23 is positioned between the contact portion 33b and the protrusion portion 33c formed on the above.

Next, the operation of the holding device S for the card C having the above structure will be described. As shown in FIG. 2, when the card C is inserted, the leaf springs 30 are first pushed by the corners of the card C. Bend. At this time, the contact portion 33b and the protruding portion 33c are formed on the one locking portion 33 of the leaf spring 30, and the wall portion 23 is located between the contact portion 33b and the protruding portion 33c. The locking portion 33 side does not move. However, in the other locking portion 33, when the plate spring 30 is flexed by the insertion of the card C, the flat surface portion 33a and the connecting portion 32 move in the gap 22 of the plate spring disposing portion 20. Next, the engaging projection 31 of the leaf spring 30 slides on the side surface of the card C, the lower end of the card contacts the walls 14 and 15, and the engaging concave portion C1 formed on the side surface of the card C and the plate. The engaging protrusion 31 of the spring 30 is engaged and prevented from coming off. This state is shown in FIG. In this way, the engagement protrusion 31 of the leaf spring 30 always engages with the engagement recess C1 of the card C at a constant position.

5 to 7 show another embodiment of the present invention, in which the same parts and the like as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted. In the above-described embodiment, a protrusion 33c is formed as a restricting portion so as to face the contact portion 33b at a predetermined distance, and the wall portion 23 is positioned between the contact portion 33b and the protrusion 33c. Although an example in which the spring 30 is arranged is shown, in this example, the claw portion 40 cut and raised at a predetermined position of the flat portion 33a of the leaf spring 30 is formed.

The predetermined position in this example means that when the leaf spring 30 is inserted into the gap 22, the claw 40 is cut and raised so that the base 41 side of the claw 40 is located first. According to this structure, the claw portion 40 pierces the surface of the wall and suppresses the movement of the leaf spring 30 in the card insertion / removal direction (vertical direction). The claw portion 40 also has an effect of preventing the leaf spring 30 from rising. Although the claw portion 40 is formed on the wall side of the flat surface portion 33a in this example, it may be formed on the wall portion 23 side of the flat surface portion 33a.

[0018]

[Effect of the device]

 In the card holding device according to the present invention, a restricting portion that suppresses movement in the card insertion / removal direction is formed at one locking portion of the leaf spring, and the locking portion of the leaf spring is disposed in the gap between the leaf spring disposition portions. Therefore, the movement of one of the locking parts of the leaf spring is regulated, the other locking part of the leaf spring becomes movable, and the position of the engaging protrusion of the leaf spring is always fixed at the fixed position. It is possible to surely engage with the concave portion and prevent the spring from being set. Since the engaging protrusion of the leaf spring and the engaging recess of the card can be securely engaged at a fixed position, the proper insertion position of the card can be confirmed by a click feeling, and the card can be reliably read and positioned. In addition, by simply changing the shape of the leaf spring, the assembling property is good, and it can be used as it is without any modification to the conventional card holding device, which is a very remarkable effect in practical use.

[Brief description of drawings]

FIG. 1 is a schematic exploded perspective view illustrating a schematic assembly of a leaf spring according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing the action of the leaf spring when inserting the card according to the embodiment of the present invention.

FIG. 3 is an explanatory view showing an inserted state of the card according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a usage example of a card.

FIG. 5 shows another embodiment of the present invention and is a perspective view of a main part showing a schematic assembly of a leaf spring.

6 is a partially enlarged view of FIG.

FIG. 7 is a cross-sectional view of essential parts showing an assembled state of FIG.

FIG. 8 is an explanatory diagram showing an operation when a card showing a conventional example is mounted.

FIG. 9 is an explanatory diagram showing an operation when a card showing a conventional example is attached.

FIG. 10 is an explanatory diagram showing an operation when a card showing a conventional example is attached.

FIG. 11 is an explanatory view showing an operation when a card showing a conventional example is attached.

[Explanation of symbols]

 10 Card Mounting Part 20 Leaf Spring Arrangement Part 21 Opening 22 Gap 23 Wall Part 30 Leaf Spring 31 Engagement Projection 32 Connecting Part 33 Locking Part 33a Flat Part 33b Abutting Part 33c Restricting Part (Protruding Part) 40 Restricting Part ( Claw) S holding device

Claims (2)

[Scope of utility model registration request] 1. A holding device for attaching and detaching and holding a card having an engagement recess formed on a side thereof, wherein the holding device is formed into a generally chevron shape with an engagement protrusion formed at the center and is engaged at both ends. A leaf spring having a stopper formed therein, a card mounting portion for holding a card in a removable manner, an opening portion is formed on a side portion of the card mounting portion, and the opening portion is disposed on the end portion side of the opening portion with a gap. And a leaf spring disposing portion having a pair of wall portions that are arranged so that the engaging protrusion of the leaf spring is slightly movable in the card insertion / removal direction from the opening toward the card mounting portion. In the card holding device, in which the engaging concave portion of the card and the engaging projection portion are engaged with each other to prevent the card from coming off, the card spring is moved in one of the locking portions of the leaf spring in the card inserting / removing direction. And a locking portion of the leaf spring is arranged in the gap of the leaf spring disposition portion. Card holding device. 2. The restricting portion for suppressing the movement of the engaging portion in the card insertion / removal direction is a claw portion cut and raised on the side where the leaf spring is disposed, and the claw portion is disposed on the leaf spring. A card holding device arranged so as to pierce the wall of the section.