Lock / unlock indicator switch device

Abstract

To provide a locking / unlocking indication switch device that is not affected by mounting errors, can be used for sliding door locks and main locks, and is compact and inconspicuous.SOLUTION: A locking / unlocking indication switch device is configured such that: a transmission unit 6 is built in a case body 1; a lock shaft 3 rotated with locking / unlocking operation of a lock device by a thumb-turn 2 is provided with a cam body 7 rotated in unison therewith; a projection part 7a for an unlocking signal and a projection part 7b for a locking signal are formed on the outer peripheral surface of the cam body 7 so as to be shifted in a circumferential direction and an axial direction; a switch operation body 8 is constituted so that a part positioned on the opposite side to a switch bar operation part 8a engaged with a switch bar 6a of the transmission unit 6 across a rocking shaft 9 is a cam sliding contact part 8b; when the cam body 7 is rotated, the cam sliding contact part 8b is guided to the projection part 7a for an unlocking signal or the projection part 7b for a locking signal; the switch operation body 8 is rocked accordingly; and a switch bar 6a is switched to operate by the switch bar operation part 8a.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] This invention relates to a lock / unlock display switch device for displaying the usage status of each of multiple private rooms, such as a shared toilet in a commercial facility, public facility, medical facility, etc., on a display means provided outside each private room. [Background technology]

[0002] Generally, the doors of each private room in a public restroom or the like are provided with a lock / unlock indicator device at approximately waist height that displays the locked / unlocked state of the locking device (slide latch lock, strike lock, etc.) on the inside of the room in red or blue on the outside of the room so that it can be visually confirmed whether the room is in use or not. However, since such door lock / unlock indicator devices cannot be seen unless one is close to the door, devices have been considered that turn on or off indicator lights provided on the outside of each private room as indicator means or change the light color of the indicator lights depending on the locked / unlocked state of the locking device on the inside of each private room so that the usage status of each private room can be confirmed from a position away from the door.

[0003] The applicant has proposed in Patent Document 1 below a switch device for indicating whether a lock or unlock is engaged, which switches the display of a display means depending on the locked / unlocked state of a locking device.

[0004] This lock / unlock indication switch device is applied to a slide latch lock, as shown in Figure 5, and has a transmitting unit 52 built into a case body 51, and a switch bar 52a of the transmitting unit 52 is switched by a lever-type switch actuator 53.

[0005] The transmitting unit 52 generates power by itself through electromagnetic induction in response to the switching operation of the switch bar 52a, and transmits a signal of the locked / unlocked state to the display means. The switch operating body 53 swings around a swing shaft 54, and a latch sliding contact portion 53b is located on the opposite side of the swing shaft 54 ​​to a switch bar operating portion 53a that switches the switch bar 52a.

[0006] In such a switch device for indicating whether the lock or unlock is engaged, as shown in Figure 5(a), when the slide latch lock is in the unlocked state, the switch actuator 53 causes the latch sliding portion 53b to protrude from the engagement / disengagement surface portion 51a of the case body 51 due to the biasing force of the coil spring 55 located on the switch bar operating portion 53a side, and the switch bar 52a engaged with the switch bar operating portion 53a is held in a position indicating the unlocked state, and the display means displays that the private room is vacant.

[0007] On the other hand, as shown in FIG. 5(b), when the latch 50 enters the engagement / disengagement surface portion 51a of the case body 51 in accordance with the locking operation of the slide latch lock, the latch sliding portion 53b of the switch actuator 53 is pressed by the latch 50, the switch actuator 53 swings, the switch bar 52a is switched to a position indicating the locked state, a signal indicating that the private room is locked is transmitted from the transmitting unit 52 to the display means, and the display means displays that the private room is in use.

[0008] Thereafter, when the slide latch lock is unlocked and the latch 50 is released from the engagement / disengagement surface portion 51a of the case body 51, as shown in Figure 5(a), the switch actuator 53 returns to its original position due to the biasing force of the coil spring 55, the switch bar 52a is switched to a position indicating the unlocked state, a signal indicating that the door is unlocked is sent from the transmitting unit 52 to the display means, and the display means displays that the private room is vacant.

[0009] In addition, the following Patent Document 2 describes a lock / unlock detection switch device, as shown in FIG. 6, which monitors the locked / unlocked state of fittings equipped with crescent locks, such as sliding windows, although the application is different from that described above.

[0010] As shown in Figure 6(a), this switch device for detecting locking and unlocking has one end of a long, plate-shaped slide member 61 connected to a handle portion 60 of the crescent lock, and switches 62a, 62b located on the other end of the slide member 61. When the handle portion 60 is operated, the slide member 61 slides, and as its position changes, switch 62a, which indicates the unlocked state, is pressed, as shown in Figure 6(b), or switch 62b, which indicates the locked state, is pressed, as shown in Figure 6(c), thereby enabling the locked / unlocked state of the sliding window to be detected. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] JP 2018-131781 A [Patent Document 2] JP 2019-157575 A Summary of the Invention [Problem to be solved by the invention]

[0012] However, in a lock / unlock indication switch device as shown in Figure 5, the latch 50 of the slide latch lock is attached to the door, and the case body 51 of the lock / unlock indication switch device is attached to the door frame, so that errors in the positional relationship between the latch 50 and the case body 51 are likely to occur, and this installation error must be absorbed. Also, in order to reliably return the switch actuator 53 to its original position when unlocking, the biasing force of the coil spring 55 must be set large to ensure a large lever ratio (the ratio of the lengths of both sides of the swing axis) from the standpoint of reducing the sliding resistance of the latch 50 of the switch actuator 53, which results in a long switch actuator 53 and makes the entire device stand out in appearance.

[0013] In addition, in the private rooms of multi-purpose toilets that use sliding doors, the locking device is not a slide latch lock, but a sliding door lock that is locked and unlocked by a thumb turn, which is problematic in that it cannot be used in such multi-purpose toilets, as well as the problem that it cannot be used with main locks such as cylinder locks.

[0014] In addition, in the lock / unlock detection switch device as shown in FIG. 6, the distance from the handle portion 60 of the crescent lock to the switches 62a, 62b is long. For example, if such a switch device is applied to a public toilet, the distance from the thumb turn of the lock device to the switch becomes long, and the overall device also becomes conspicuous in appearance.

[0015] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a small, inconspicuous switch device for indicating whether a lock is engaged or disengaged, which is not affected by installation errors, can be used with both sliding door locks and deadbolts, and is capable of being used with a sliding door lock and a deadbolt. [Means for solving the problem]

[0016] In order to solve the above problems, the present invention provides a lock / unlock display switch device that includes a transmitter unit built into a case body and transmits a signal indicating the locked / unlocked state of a locking device by switching a switch bar of the transmitter unit with a lever-type switch actuator, in order to display the locked / unlocked state of the locking device on a display means located away from the locking device, the switch bar being switched by a lever-type switch actuator, The lock shaft rotates in accordance with the locking / unlocking operation of the locking device, and is provided with a cam body that rotates in conjunction with the rotation of the lock shaft. An unlock signal protrusion and a lock signal protrusion are formed on the outer circumferential surface of the cam body, offset in the circumferential and axial directions, The switch actuation body is configured such that a switch bar actuation portion that engages with the switch bar is provided at one end side, and a cam sliding contact portion that slides against the cam body is provided at the other end side across the swing shaft, When the cam body rotates, the cam sliding portion is guided to the unlocking signal protrusion or the locking signal protrusion, and as a result, the switch operating body swings, and the switch bar is switched by the switch bar operating portion.

[0017] The side portions of the unlock signal projection and the lock signal projection of the cam body which guide the cam sliding contact portion are tapered such that the opposing surfaces are inclined.

[0018] Furthermore, the switch operating body is adapted to swing in both directions with one side of the cam sliding contact portion in sliding contact with the unlock signal projection and the other side in sliding contact with the lock signal projection.

[0019] In addition, the cam body has a pair of unlocking signal protrusions and a pair of locking signal protrusions at circumferentially symmetrical positions on the outer peripheral surface, so that it can be used on either the left or right side. Effect of the Invention

[0020] In the lock / unlock indication switch device of this invention, the switch operating body is swung by the rotational movement of a cam body within the same device to switch the switch bar of the transmitting unit, so that it is not affected by installation errors for separate fixtures such as a door and frame.

[0021] In addition, no spring is required to return the switch actuator to its initial position, and even if the lever ratio of the switch actuator is small, the locking and unlocking operations can be performed reliably with light force.The door can be made compact, and is inconspicuous when installed on the inside of a private room, etc.

[0022] In addition, since the cam body is designed to rotate in conjunction with the lock shaft that rotates in conjunction with the locking and unlocking operation of the locking device, it can also be used with sliding door locks that are locked and unlocked by a thumb turn, such as in multi-purpose toilets, and electric locks for swinging doors such as at front doors, and can also be used with main locks in various facilities other than public toilets. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 is an external perspective view showing a state in which a thumb turn is attached to a lock / unlock indicating switch device according to the present invention; [Diagram 2] 4A and 4B are longitudinal sectional side views showing the above lock / unlock indicating switch device in an unlocked state and a locked state, respectively; [Diagram 3] FIG. 2 is a perspective view showing the inside of the unlocked state of the above. [Figure 4] FIG. 13 is a perspective view showing the inside of the locking state of the above. [Diagram 5] FIG. 2 is a longitudinal sectional side view showing (a) an unlocked state and (b) a locked state of the lock / unlock indicating switch device described in Patent Document 1. [Figure 6] FIG. 1 is a longitudinal sectional side view showing (a) the overall configuration of a locking / unlocking detection switch device described in Patent Document 2, (b) a switch unit in an unlocked state, and (c) a switch unit in a locked state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0025] The lock / unlock indicator switch device shown in Figure 1 is attached to the interior side of the door of each private room in a public restroom, etc., and has a case body 1 with an external shape of a vertically long oval when viewed from the front, and a large thumb turn 2 is attached for locking and unlocking operations.

[0026] As shown in Figures 2 to 4, the lock shaft 3, which is the square core of the thumb turn 2, passes through the lower part of the lock / unlock indicating switch device and is connected to a lock device (not shown).

[0027] An oval plate-shaped base 5 is provided inside the case body 1 along a mounting bracket 4 that is fixed to a door, and the mounting bracket 4 and base 5 are fitted together so as not to shift relative to each other.

[0028] A transmitting unit 6 is attached to the top of the base 5. The transmitting unit 6 generates power by itself through electromagnetic induction when a switch bar 6a is switched, and wirelessly transmits a signal indicating the locked / unlocked state from an antenna 6b to a display means provided on the outside of each private room.

[0029] The display means used may be an indicator light that turns on or off depending on the locking / unlocking state resulting from the rotation of the thumb turn 2, or an indicator light that changes color.

[0030] The lock shaft 3 is provided with a cam body 7 which rotates in conjunction with the lock shaft 3, and on the outer circumferential surface of the cam body 7, an unlocking signal protrusion 7a and a locking signal protrusion 7b are formed at positions shifted 90° in the circumferential direction and also in the axial direction.

[0031] The unlock signal projections 7a and the lock signal projections 7b are arranged in pairs at circumferentially symmetrical positions on the outer circumferential surface of the cam body 7, so that they can be used on either the left or right side.

[0032] Both side portions of the unlock signal projection 7a and the lock signal projection 7b are tapered such that the opposing surfaces are inclined.

[0033] Between the transmitting unit 6 and the cam body 7, a lever-type switch operating body 8 is attached to the base 5 via a swing shaft 9 so as to be able to swing freely.

[0034] One end of the switch operating body 8 is a switch bar operating portion 8a that switches the switch bar 6a, and the other end, sandwiched between the oscillating shaft 9, is a cam sliding contact portion 8b that slides against the unlocking signal protrusion 7a or the locking signal protrusion 7b of the cam body 7.

[0035] The switch bar operating portion 8a has a groove portion that opens at an end face, and the switch bar 6a is loosely fitted into the groove portion so that the switch bar 6a can be switched without hindrance.

[0036] One side of the cam sliding contact portion 8b is in sliding contact with the unlock signal projection 7a and the other side is in sliding contact with the lock signal projection 7b, so that the switch actuating body 8 swings in both directions.

[0037] Inside the case body 1, the transmitting unit 6 is covered with a board cover 10, and the cam body 7 and the switch actuating body 8 are covered with a cover bracket 11.

[0038] The cam body 7 is sandwiched between the base 5 and the cover bracket 11, and the rear faces of each pair of unlocking signal protrusions 7a and the front faces of each pair of locking signal protrusions 7b are in sliding contact with the base 5 and the cover bracket 11, respectively, allowing the cam body 7 to rotate in a stable state.

[0039] The mounting bracket 4 and the cover bracket 11 are joined at the bottom by a screw 12, and as shown in FIG. 1, by screwing a screw 13 into the side wall of the case body 1, each member is fixed in an assembled state.

[0040] In the above-mentioned lock / unlock indication switch device, as shown in Figures 2(a) and 3, when the locking device is in the unlocked state and the thumb turn 2 is in a vertical position, one side of the cam sliding portion 8b abuts against the unlock signal protrusion 7a, the switch bar operating portion 8a holds the switch bar 6a in a position corresponding to the unlocked state, and the signal indicating the unlocked state transmitted from the transmitting unit 6 causes the display means to display that the private room is vacant.

[0041] On the other hand, as shown in Figures 2(b) and 4, when the thumb turn 2 is turned sideways so that the locking device is in the locked state and the cam body 7 rotates together with the lock shaft 3, the other side of the cam sliding portion 8b slides against and is guided by the locking signal protrusion 7b, the switch operating body 8 swings to one side, and the switch bar 6a is switched to a position corresponding to the locked state, and the signal indicating the locked state transmitted from the transmitting unit 6 causes the display means to show that the private room is in use.

[0042] Thereafter, when the thumb turn 2 is turned vertically to unlock the door, as shown in Figures 2(a) and 3, one side of the cam sliding portion 8b is guided by sliding contact with the unlocking signal protrusion 7a, the switch operating body 8 swings to the other side, and the switch bar 6a is switched to return to the position indicating the unlocked state, and the signal indicating the unlocked state transmitted from the transmitting unit 6 causes the display means to show that the private room is vacant.

[0043] In the above-described lock / unlock indication switch device, the switch operating body 8 is swung by the rotational movement of the cam body 7 attached to a common base 5 within the same device, thereby switching the switch bar 6a of the transmitting unit 6, so that it is not affected by installation errors for separate fixtures such as a door and frame.

[0044] Furthermore, no spring is required to return the switch actuator 8 to its initial position, and even if the lever ratio of the switch actuator 8 is small, the locking and unlocking operations can be performed reliably with a light force, making it possible to reduce the size and making the door unnoticeable when installed on the inside of the room.

[0045] In addition, since the cam body 7 is configured to rotate in conjunction with the lock shaft 3 which rotates in conjunction with the locking and unlocking operation of the locking device, it can also be used with sliding door locks that are locked and unlocked by a thumb turn, such as in multi-purpose toilets, and electric locks for swinging doors such as front doors, and can also be used with main locks in various facilities other than public toilets.

[0046] In the above embodiment, Figs. 2(a) and 3 show the unlocked state, and Figs. 2(b) and 4 show the locked state. However, the opposite may also be true, that is, Figs. 2(a) and 3 show the locked state, and Figs. 2(b) and 4 show the unlocked state.

[0047] In addition, the above embodiment discloses an example in which the invention is applied to a private room in a shared toilet and the usage status of the private room is displayed on an external display means, but the invention is not limited to this and may be applied, for example, to a configuration in which the locked / unlocked status of the front door is displayed on a display device installed in a bedroom, or the locked / unlocked status is displayed on a family member's smartphone via the internet using an app installed on their smartphone.

[0048] In addition, in the above embodiment, an example was disclosed in which the cam body 7 is fixed integrally to the lock shaft 3 directly connected to the thumb turn 2, but the rotation means of the lock shaft 3 is not limited to the thumb turn 2 and may be a configuration in which the motor output, etc. is driven by gear reduction to enable non-contact locking / unlocking, etc. [Explanation of symbols]

[0049] 1 Case body 2 Thumb turn 3 Lock shaft 4 Mounting bracket 5. Bass 6 Transmitting Unit 6a Switch bar 6b Antenna 7 Cam body 7a Unlock signal protrusion 7b Locking signal protrusion 8 Switch actuator 8a Switch bar operating part 8b Cam sliding part 9 Swing Axis 10 Board cover 11 Cover bracket 12,13 Bis

Claims

1. A lock / unlock display switch device includes a transmitter unit built into a case body and transmits a signal indicating the locked / unlocked state of a lock device by switching a switch bar of the transmitter unit with a lever-type switch actuator to display the locked / unlocked state of the lock device on a display means located away from the lock device, The lock shaft rotates in accordance with the locking / unlocking operation of the locking device, and is provided with a cam body that rotates in conjunction with the rotation of the lock shaft. An unlock signal protrusion and a lock signal protrusion are formed on the outer circumferential surface of the cam body, offset in the circumferential and axial directions, The switch actuation body is configured such that a switch bar actuation portion that engages with the switch bar is provided at one end side, and a cam sliding contact portion that slides against the cam body is provided at the other end side across the swing shaft, A switch device for indicating whether or not a lock / unlock switch is engaged, characterized in that when the cam body rotates, the cam sliding portion is guided to the unlock signal protrusion or the lock signal protrusion, causing the switch operating body to swing and the switch bar to be switched by the switch bar operating portion.

2. 2. The lock / unlock indicator switch device according to claim 1, wherein the side portions of the cam body that guide the cam sliding portion of the unlock signal protrusion and the lock signal protrusion are tapered such that the opposing surfaces are inclined.

3. The switch device for indicating whether or not a lock has been placed is described in claim 1 or 2. The switch actuator has one side of the cam sliding contact portion that slides against the unlock signal protrusion and the other side that slides against the lock signal protrusion, and swings in both directions.

4. A switch device for indicating whether a lock or unlock is engaged as described in any one of claims 1 to 3, characterized in that the cam body has a pair of unlock signal protrusions and a pair of lock signal protrusions at symmetrical positions in the circumferential direction on the outer peripheral surface, so that it can be used on either the left or right side.

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