JP2007107225A - Constitution of control switch in electric lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the constitution of a switch which solves the problems associated with the maintenance of accuracy, and reduction in the number of part items and man-hours for assembly, though a plurality of switches are arranged in a case so that electric control can be performed, a mounting member dedicated to the switch is provided in the case, and a circuit is composed of an insulation-coated wire so that wiring can be provided from the switch to a control board, in a conventional electric lock. <P>SOLUTION: All the switches taking charge of control timing are arranged and constituted on the control circuit board, and the board is positioned and mounted in the case, so that the accurate control timing can be easily acquired. Since a switch actuating plate for actuating the switch is surely actuated by the action of an action spring, the sure control can be easily performed. This enables an increase in reliability, a reduction in the number of the components, and a decrease in cost. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

      The present invention relates to switch arrangement, timing, and operation of a switch operating plate for operating a switch in order to reliably control a drive motor in an electric lock for locking a door that is opened and closed by a hinge.

In the conventional electric lock, after attaching various switches to the switch mounting member, the unit is fixed to the housing with a mounting screw, and wiring from the switch to the control board is carried out with lead wires. For this reason, lead wires for the switch terminals are required, and the soldering points are also required to be double that of the lead wires, reducing the reliability of the connection. The number of parts also increased, requiring work man-hours. As a result, the cost increased. In addition, there are many members that intervene in the positional accuracy of the switch, and it is difficult to ensure the accuracy due to accumulated errors. (For example, see Patent Document 1)
Patent No. 3531985

An object of the present invention is to provide a switch configuration in an electric door lock which has improved accuracy maintenance, reduction in the number of parts, reduction in assembly man-hours, and the like, which are conventional problems.

In order to achieve the above object, the present invention mounts various control switches on a control board, and attaches the control board unit to the chassis housing with a mounting member with high accuracy.

In order to control various switches, the switch actuating plate is composed of a single member to ensure accuracy, and the intermediate gear and action spring are effective to ensure the movement of the actuating plate to the end position of operation end. It is comprised so that it may act on.

As described above, in the present invention, a switch is directly mounted on a control board, lead wires for connection are reduced, and reliability such as defective soldering is improved. In addition, mounting the switch on the board ensures the mounting position accuracy of the switch. This leads to the fact that the switch operation timing accuracy can be secured.

  The switch operating plate for operating the switch is composed of a single member, and a projection with high positional accuracy can be obtained by molding or pressing projections that control various switches. This has the effect of stabilizing the control timing of the switch in total with the control board unit.

The present invention will be described based on the following examples.

Specifically, it demonstrates based on the embodiment shown by FIGS.

  1 and 4, a motor 40 with a reduction gear is attached to the chassis housing 11. A small bevel gear 41 is fitted on the output shaft of the motor 40 with a reduction gear and meshes with the large bevel gear 42.

The large bevel gear 42 is configured integrally with the sun gear 43. The planetary gear 45 meshed with the sun gear 43 is pivotally supported by the planetary base plate 46 and is configured as a planetary gear unit 44 (FIG. 3). The planetary gear unit 44 is coaxially fitted to a column that supports the large bevel gear 42.

The planetary gear unit 44 is rotated by the rotation of the motor 40 with a reduction gear, and the planetary gear 4
5 meshes with the intermediate gear 31. The intermediate gear 31 is in mesh with the dharma gear 51.
Further, since the Dalma gear 51 is associated with the dead bolt 52, the dead bolt unit 52 is operated in the locking or unlocking direction by the rotation of the Dalma gear 51.

In the case of manual operation, a thumb turn (not shown) is associated with the Dharma Gya 51,
When the thumb turn is rotated, the dharma gear 51 rotates, and the dead bolt unit 52 is operated in the locking or unlocking direction.

The planetary gear unit 44 is configured such that an action spring acts so as to always be in the neutral position in the locked position and the unlocked position.

Even in the electric operation or the manual operation, the intermediate gear 31 always rotates, so that the switch operation plate 22 is always moved. Therefore, the switch operation plate 22 is located in either the locking position or the unlocking position. This is configured to be useful for motor control during electric operation.

    In FIG. 5, a switch operation plate guide column 14, a chassis upper lid mounting column 15, and an intermediate gear shaft 16 are fixed to the chassis housing 11 by caulking.

Various elements constituting an electric circuit are mounted on the control board unit 20. In addition, switches A, B, and C (21a, 21b, and 21c) are inserted and mounted in insertion holes with guaranteed positional accuracy, and are connected by soldering by reflow or the like. This has the advantage that the soldering reliability is higher than that in which the lead wire is soldered manually.

In FIG. 5, the control board unit 20 is screwed and fixed to the chassis housing 11 with a control board unit mounting member 13 with high positional accuracy. In order to ensure the positional accuracy, for example, a convex projection on the chassis housing, a control board unit mounting member guide pin 11a, and a hole or groove that fits the projection on the control board unit mounting member 13 are formed. This makes it easy to secure the mounting position accuracy.

A switch operating plate 22 is associated with the intermediate gear 31 to control the various switches described above.

In FIG. 7, the switch operation plate 22 is fixed to the switch operation plate pin 23 by caulking by the intermediate gear 31. Further, in the vicinity thereof, a guide groove 22a for guiding the switch operating plate 22 is provided, and a standing bent portion 22b for controlling the switches A, B, C (21a, 21b, 21c) is formed.

The switch operation plate 22 is a switch operation plate guide column 1 that is crimped to the chassis housing 11.
4 and fitted with an E-ring so as not to come off. The other end of the guide is configured to be guided by being fitted into a gap between the chassis upper lid mounting column 15 crimped to the chassis housing 11 and the bent wall surface of the chassis housing 11. The chassis housing 11 and the chassis upper lid 12 are also configured to guide the switch operation plate 22 (FIG. 7). The guide of the switch operation plate 22 is not limited to the illustrated method, and a guide pin or the like may be configured on the bent wall surface portion of the chassis housing 11.

  Next, the configuration of the intermediate gear portion for driving the switch operation plate 22 will be described. In FIG. 6, the intermediate gear 31 is configured so as to be integrated with the intermediate gear bush 32 and a screw or the like, and is rotatably fitted to the intermediate gear shaft 16 fixed to the chassis housing 11. An action spring hook 33 is attached to the intermediate gear bush 32 by caulking, and one end of an action spring 34 is fitted into the action spring hook 33. The other end of the action spring 34 is fitted into a switch operation plate guide column 14 fixed to the chassis housing 11.

Operation of the switch operation plate 22 will be described. In FIG. 1, the intermediate gear 31 is biased to rotate counterclockwise by the force of the action spring 34. This is because the switch actuating plate pin 23 is pressed upward at the end face of the intermediate gear 31, and the standing bent portion 22b provided on the switch actuating plate 22 turns on the switch A21a and the switch B21b, and turns off the switch C21c. Located to be in a state.

  When the intermediate gear 31 is electrically or manually rotated clockwise from the above state, the action spring 34 is charged. Further, by continuing the rotation, the switch operating plate pin 23 is pressed by the other end face of the intermediate gear 31 to move the switch operating plate 22 downward. Finally, the force of the action spring 34 causes the intermediate gear 31 to move. 2 is reliably rotated clockwise, and the switch operation plate 22 is also reliably operated to be in the state shown in FIG.

  When displaced to the above state, the switches A21a and B21b are instantaneously switched to the OFF state and the switch C21c is instantaneously switched to the ON state. The circuit is configured so as to control forward / reverse rotation of the motor as a driving source, stop of the motor, and the like by utilizing such switching.

Top view showing the locked state Top view showing unlocked state Assembly diagram of planetary gear unit Assembly diagram of motor part with reduction gear Assembly diagram of control board unit Assembly diagram of intermediate gear Assembly diagram of switch operating plate AA sectional view of FIG. Assembly configuration diagram

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Chassis housing | casing 11a Control board unit attachment member guide pin 12 Chassis upper cover 13 Control board unit attachment member 14 Switch action | operation plate guide pillar 15 Chassis upper cover attachment pillar 16 Intermediate | middle gear shaft

20 Control board unit 21a Switch A
21b Switch B
21c Switch C
22 Switch operation plate 22a Guide groove 22b Standing bending portion 23 Switch operation plate pin

31 Intermediate gear 32 Intermediate gear bush 33 Action spring hook 34 Action spring 40 Motor with reduction gear 41 Small bevel gear 42 Large bevel gear 43 Sun gear 44 Planetary gear unit 45 Planetary gear 46 Planetary base plate 51 Dalma gear 52 Dead bolt unit

Claims (3)

An intermediate gear is arranged between an electric output source composed of a motor unit and a planetary gear unit and a manual input source composed of a thumb-turn unit that drives a dead bolt, and the switch operation plate is driven at both end positions of the intermediate gear. The switch switching configuration of the electric door lock using both electric and manual, characterized in that Various switches are mounted on a control board, and the board is positioned and attached to a chassis housing. 2. The switch switching structure of the electric door lock according to claim 1, wherein the switch operating plate for switching the switch is integrally formed with standing bending protrusions related to various switches and associated with the switch. .   The switch switching structure of the electric door lock according to claim 1 or 2, wherein the switch operating plate is configured to be positioned at both end positions of the operation with action springs associated with the intermediate gear. .