JP2008300731A - Structure of lid opening and holding member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To hold a lid in an open state without supporting it by a hand. <P>SOLUTION: When the lid 11 is turned upward, since the lateral direction end of the lid 11 strides over a projection 15 formed on the inner side face of a recessed part 7, the projection 15 holds the lid 11 in the open state and thus the need of supporting it with a hand is eliminated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a structure of a lid opening holding member for holding a lid that is pivoted up and down in an open state.

For example, in a building entrance / exit system, when a terminal device is installed in the vicinity of a door of a room and an IC card owned by an individual is held over the terminal device, the terminal device reads the contents of the IC card and reads the electrical power of the room door. A configuration for unlocking the locking device is employed.
The terminal device is set with an address for communicating with the control device of the system. The terminal device main body is provided with a plurality of switches for performing this address setting, etc., but these switches are gathered in one place, and the switch arrangement part is opened and closed by a lid. . The lid is supported so as to be pivotable about the upper part, and is opened by rotating upward.
It should be noted that the structure in which the case is provided with the lid so as to be rotatable around the upper part is too general, and no suitable prior art document has been found.

  In the configuration in which the lid is pivotable in the vertical direction around the top as described above, when the lid is opened and the switch is operated, if the hand is released from the lid, the lid rotates in the closing direction under its own weight. Therefore, when operating the switch, the lid must be kept open with one hand, which makes it difficult to operate the switch.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a simple structure capable of holding a lid in an open state without being supported by a hand.

  In the present invention, when the lid is rotated upward, the lateral end of the lid gets over the projection provided on the device main body, so that the projection keeps the lid open. The lid is held open.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings, for example, applied to an IC card reader used as a terminal device in a building entrance / exit system. FIG. 3 shows the overall configuration of the IC card reader, which has, for example, a function (reader function) for reading a non-contact type IC card. The main body (device main body) 2 of the IC card reader 1 is a rectangular box as a whole, and is fixed to a wall or the like.

  The main body 2 includes a front case 3 and a rear case 4. Both the cases 3 and 4 are made of plastic, and the front case 3 is provided with a key operation unit 5 and a card reader unit 6. The key operation unit 5 is provided with various key switches 5a such as a numeric keypad. The card reader unit 6 reads the contents of a non-contact type IC card (not shown) of the occupant. Then, a control unit (not shown) of the IC card reader 1 transmits the contents of the IC card read by the card reader unit 6 to the system control device, and the system control device determines the entry qualification of the IC card holder. To be judged. The determination result of the entrance qualification is returned to the IC card reader 1, and the control unit of the IC card reader 1 unlocks the electric locking device of the door of the room based on the determination result.

  Now, as shown in FIG. 1, a recess 7 is formed in the upper front portion of the front case 3 so as to be recessed rearward from the front surface. The inner surface of the recess 7 is constituted by a substrate 8 on which a reset switch 9 as a control element and a plurality of rotary switches 10 are disposed. These switches 9 and 10 are for setting the address of the IC card reader 1 for communicating with the control device of the system. The recess 7 is opened and closed by a lid 11. The central portion of the front surface of the main body 2 provided with the card reader 6, the lid 11, and the like is usually covered with a cover (not shown).

The lid 11 is supported by the front case 3 so as to be pivotable in the vertical direction about the upper part, and opens and closes the recess 7 by the pivoting in the vertical direction. That is, the lid 11 is made of plastic and has a rectangular shape with a curved upper part, and a plurality of projecting pieces 12 project from the upper side. A thin bendable self-hinge portion 13 is formed between the protruding piece portion 12 and the lid 11. The projecting piece 12 is inserted into a hole 14 formed in the upper side of the recess 7 in a press-fitted state, so that the lid 11 is centered on the front hinge 3 (rotation support) 14. Thus, it is attached so as to be rotatable in the vertical direction.
The lid 11 is provided with a light shielding piece 11a. When the lid 11 is in a state in which the concave portion 7 is closed, the light-shielding piece 11a prevents the light receiving element from receiving the light of the light projecting element with respect to a photocoupler (not shown) as a lid opening / closing detection element provided on the substrate 8. It shields light.

  Thus, with respect to the lid 11 supported so as to be rotatable in the vertical direction, at least one of the left and right inner side surfaces of the recess 7, for example, the right inner side surface, as a lid opening holding member, for example, a hemispherical projection 15 is integrally projected. The projecting position of the projecting portion 15 is set to a position slightly in front of the fully opened position within the operating range of the right end portion which is the lateral end portion of the lid 11 when the lid 11 is opened and closed. . When the lid 11 is opened, the right end portion of the lid 11 gets over the protrusion 15 slightly before reaching the fully opened position.

  In this case, if the lid 11 and the recess 7 are not elastically bent on the side of the recess 7 having the protrusion 15 or the elastic deformation of the lid 11, the right end of the lid 11 rides on the protrusion 15. Therefore, it is determined to have a dimensional relationship so that it cannot pass through the protrusion 15. For this reason, by opening the lid 11 to the fully open position, when the right end of the lid 11 passes through the protrusion 15 from the bottom to the top, the right end of the lid 11 is stopped by the protrusion 15. Thus, the lid 11 is held in the open position.

  In the above configuration, when the IC card reader 1 is initially set, in order to operate the switches 9 and 10 in the recess 7, the cover (not shown) is removed, and the lid 11 is rotated upward to open the lid 11. Then, the right end of the lid 11 gets over the protrusion 15 slightly before the fully open position. Since the recess 7 or the lid 11 is elastically deformed when getting over the projection 15, when the right end of the lid 11 gets over the projection 15 and the lid 11 or the recess 7 is restored, the projection 15 is moved to the right side of the lid 11. The end portion is locked and the lid 11 is held in the fully open position.

  In this state, the rotary switch 10 in the recess 7 is turned to set the address, and the key switch 5a of the key operation unit 5 is operated to enter the address setting mode (the switch 10 is set by entering this mode). During this operation, the lid 11 is held open by the protrusion 15, so that it is not necessary to support the lid 11 with a hand, and the operability is excellent. After that, when the lid 11 is pushed down, the lid 11 passes through the protrusion 15 from top to bottom and is returned to the original closed position.

The present invention is not limited to the embodiment described above and shown in the drawings, and can be expanded or changed as follows.
The protrusion 15 is not limited to a hemispherical shape. Any shape that allows the end of the lid 11 to be overcome is acceptable.
The lid that is held open by the protrusion is not limited to the lid 11 of the IC card reader.
The lid 11 may have a structure that is rotatably supported by a shaft.

The side view of the longitudinal section of the principal part in one embodiment of the present invention Perspective view of main parts Perspective view of IC card reader

Explanation of symbols

  In the drawings, 2 is a main body (device main body), 3 is a front case, 7 is a recess, 11 is a lid, 13 is a self-hinge part (rotating support part), and 15 is a protrusion (lid opening holding member).

Claims (1)

The device body is provided with a lid having a pivot support portion on the upper part so as to be pivotable in the vertical direction, and the lid is opened by pivoting the lid upward about the pivot support portion on the upper part. In the equipment to be in the state
The device body is provided with a protrusion that can be overcome by the lateral end of the lid as a lid opening holding member, and when the lid is rotated upward, the lateral end of the lid gets over the projection. The structure of the lid opening holding member is characterized in that the protrusion holds the lid in an open state.

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