Low-power-consumption door opening and closing detection device for door lock

Abstract

The low-power-consumption door opening and closing detection device comprises a base, a long sliding block, a terminal IV, a terminal V, a conducting strip and a cam, the long sliding block is connected to the base in a clamped mode, the cam is installed on the inner wall of the front side of the base through a rotating shaft, the front end of the long sliding block is movably connected with the rear portion of the cam, and the front end of the long sliding block is movably connected with the rear portion of the cam. The cam rotates to drive the long sliding block to move front and back and be positioned. The terminal IV and the terminal V are arranged on the left side of the base, the right end of the terminal V is connected with the conducting strip, the right part of the terminal IV is provided with a first contact, the conducting strip is provided with a second contact, the first contact is in contact with the second contact, the left side of the front part of the long sliding block is provided with a limiting bulge, and the left end of the limiting bulge is inserted between the right end of the conducting strip and the inner wall of the base on the front side of the conducting strip; through cooperation of the terminal IV, the terminal V, the conducting strip and the long sliding block, whether the door hook is inserted into the door lock or not is detected, power consumption is low, and damage is not likely to happen.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment door locks, and in particular relates to a door opening and closing detection device for a door lock with low power consumption. Background Art

[0002] With the development of household appliances technology, people have higher and higher requirements for the safety of household appliances. The door locks of household appliances need to detect the door opening and closing to prevent accidental injury to operators. At present, the door locks installed on the door covers of commonly used household appliances such as washing machines usually detect whether the door hook is inserted into the door lock after the terminals I and II are energized. Terminals I and II usually need to be connected to the high-power devices of the washing machine (such as drying modules, motor drive modules, etc.). The door lock opening and closing detection can only be achieved through the sharing of high-current switches, which has high energy consumption and is easy to damage. The patent CN214170227U of the applicant discloses an electromagnetic door lock switch for a washing machine, which also detects whether the door lock is locked or unlocked after the terminals I and II are energized.

[0003] Patent CN 210516547U discloses a micro switch and door lock device for household appliance door lock devices, through a conductive terminal 1, the conductive terminal 1 has a relative contact terminal 1 and a wiring terminal 1; a conductive terminal 2, the conductive terminal 2 has a relative contact terminal 2 and a wiring terminal 2, the wiring terminal 1 and the wiring terminal 2 are connected to a working circuit; and an elastic component, the elastic component has opposite end portions 1 and 2, the end portion 1 abuts against the contact terminal 1, the end portion 2 has a position 1 and a position 2 relative to the end portion 1, when the end portion 2 is at the position 1, it is separated from the contact terminal 2 to disconnect the working circuit; when the end portion 2 is at the position 2, it abuts against the contact terminal 2 to conduct the working circuit, and can be directly integrated into the door lock of the household appliance, and is directly triggered by the movable component of the door lock, which is equivalent to adding a micro switch on the basis of the original door lock to realize the detection of the door lock opening and closing, and the structure is complex and the cost is high.

[0004] Therefore, it is necessary to develop a door opening and closing detection device which has a simple structure, low power consumption and can directly detect whether a door hook is inserted into a door lock. Utility Model Content

[0005] In order to solve the existing technical problems, the utility model provides a low-power door lock opening and closing detection device, which can detect whether the door hook is inserted into the door lock through the cooperation of terminal IV, terminal V, conductive sheet and long slider, has low power consumption and is not easy to be damaged.

[0006] The technical solution of the utility model is: a low-power door lock switch detection device, comprising a base, a long slider, a terminal IV, a terminal V, a conductive sheet and a cam, wherein the long slider is clamped on the base, the cam is installed on the front inner wall of the base through a rotating shaft, the front end of the long slider is movably connected to the rear of the cam, and the rotation of the cam drives the long slider to move forward and backward and position; the terminal IV and the terminal V are arranged on the left side of the base, the right end of the terminal V is connected to the conductive sheet, the right part of the terminal IV is arranged with a first contact, the second contact is arranged on the conductive sheet, the first contact and the second contact are in contact, a limiting protrusion is arranged on the left side of the front of the long slider, and the left end of the limiting protrusion is inserted between the right end of the conductive sheet and the inner wall of the base on the front side of the conductive sheet.

[0007] Furthermore, the limiting protrusion is a triangular structure, and the angle with the smallest angle in the triangular structure is located between the conductive sheet and the inner wall of the base on the front side of the conductive sheet; when the long slider moves backward, the limiting protrusion moves backward at the same time, driving the right end of the conductive sheet to move backward, separating the second contact and the first contact, thereby realizing the opening of the second contact and the first contact.

[0008] Furthermore, a limiting cavity is arranged on the front left side of the base, the left end of the cam is arranged in the inner cavity of the limiting cavity, the left end of the limiting protrusion is arranged between the right end of the conductive sheet and the rear wall of the limiting cavity, the front of the long slider and the rotating shaft are arranged on the right side of the limiting cavity, and the right end of the terminal IV is arranged on the left side of the limiting cavity.

[0009] Furthermore, a slot is provided at the lower part of the cam, and the front part of the long slider corresponds to the slot; when the cam rotates upward around the rotating axis, the long slider moves forward, and the front part of the long slider moves into the slot, and the limiting protrusion is limited by the rear wall of the limiting cavity to achieve the positioning of the long slider; when the cam rotates downward around the rotating axis, the cam pushes the long slider to move backward, and the front end of the long slider is pressed tightly against the rear wall of the cam to achieve the positioning of the long slider.

[0010] Furthermore, the upper cover is clamped on the upper rear portion of the base, the cam seat is clamped on the upper front portion of the base, the terminal IV, terminal V, conductive sheet, cam and the front of the long slider are arranged between the base and the cam seat, and the rear of the long slider is arranged between the base and the upper cover.

[0011] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0012] (1) The utility model realizes the detection of whether the door hook is inserted into the door lock through the cooperation of terminal IV, terminal V, conductive sheet and long slider. The door hook action is detected through the separate circuits of terminal IV and terminal V, and the detection result is fast and accurate. Moreover, the circuit is not connected to other high-power devices of the washing machine, and the detection of the door hook action can be completed without energizing terminals I and II in the prior art, thus avoiding the sharing of high-current switches, not being easily damaged, and using low voltage and low current to complete the detection of the door hook action, with low power consumption.

[0013] (2) Simple structure, stable and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the installation structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of the door lock of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model when the door hook is not inserted into the door lock;

[0018] Figure 5 It is a structural schematic diagram of the door hook of the utility model when inserted into the door lock.

[0019] In the figure, 1, base; 2, long slider; 3, terminal IV; 4, terminal V; 5, conductive sheet; 7, cam; 8, rotating shaft; 9, second contact; 10, first contact; 11, limiting protrusion; 12, limiting cavity; 13, card slot; 14, upper cover; 15, cam seat. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Example 1

[0022] Reference Figure 1-5A low-power door lock switch detection device includes a base 1, a long slider 2, a terminal IV3, a terminal V4, a conductive sheet 5 and a cam 7. The long slider 2 is clamped on the base 1, and the cam 7 is installed on the front inner wall of the base 1 through a rotating shaft 8. The front end of the long slider 2 is movably connected to the rear of the cam 7, and the rotation of the cam 7 drives the long slider 2 to move forward and backward and position; the terminal IV3 and the terminal V4 are arranged on the left side of the base 1, the right end of the terminal V4 is connected to the conductive sheet 5, the right part of the terminal IV3 is provided with a first contact 10, the conductive sheet 5 is provided with a second contact 9, the first contact 10 and the second contact 9 are in contact, and a limiting protrusion 11 is arranged on the left side of the front of the long slider 2, and the left end of the limiting protrusion 11 is inserted between the right end of the conductive sheet 5 and the inner wall of the base 1 on the front side of the conductive sheet 5.

[0023] The movement of the long slider 2 drives the limit protrusion 11 to move forward and backward, thereby driving the right end of the conductive sheet 5 to move, realizing the opening and closing of the first contact 10 and the second contact 9, thereby changing the conduction state of the circuit and realizing the change of the detection signal.

[0024] Furthermore, the limiting protrusion 11 is a triangular structure, and the angle with the smallest angle in the triangular structure is located between the conductive sheet 5 and the inner wall of the base 1 on the front side of the conductive sheet 5; when the long slider 2 moves backward, the limiting protrusion 11 moves backward at the same time, driving the right end of the conductive sheet 5 to move backward, separating the second contact 9 and the first contact 10, thereby realizing the opening of the second contact 9 and the first contact 10.

[0025] When the limiting protrusion 11 moves backward, it drives the right end of the conductive sheet 5 to move rightward, and the second contact 9 and the first contact 10 are separated and opened; when the limiting protrusion 11 moves to the front end, it does not generate backward force on the conductive sheet 5, the conductive sheet 5 returns to its original position, and the first contact 10 and the second contact 9 are connected and closed.

[0026] Furthermore, a limit cavity 12 is set on the front left side of the base 1, the left end of the cam 7 is set in the inner cavity of the limit cavity 12, the left end of the limit protrusion 11 is set between the right end of the conductive sheet 5 and the rear wall of the limit cavity 12, the front of the long slider 2 and the rotating shaft 8 are set on the right side of the limit cavity 12, and the right end of the terminal IV3 is set on the left side of the limit cavity 12.

[0027] The limiting cavity 12 provides enough space for the installation of the cam 7 , and when the long slider 2 moves forward, the limiting protrusion 11 is limited, thereby achieving the positioning of the long slider 2 .

[0028] Furthermore, a slot 13 is provided at the lower portion of the cam 7, and the front portion of the long slider 2 corresponds to the slot 13; when the cam 7 rotates upward around the rotating shaft 8, the long slider 2 moves forward, and the front portion of the long slider 2 moves into the slot 13, and the limiting protrusion 11 is limited by the rear wall of the limiting cavity 12 to achieve the positioning of the long slider 2. When the cam 7 rotates downward around the rotating shaft 8, the cam 7 pushes the long slider 2 to move backward, and the front end of the long slider 2 is pressed tightly against the rear wall of the cam 7 to achieve the positioning of the long slider 2.

[0029] By setting the card slot 13, when the cam 7 rotates, it can drive the long slider 2 to move forward and backward, so that the opening or closing of the first contact 10 and the second contact 9 is controlled by the limiting protrusion 11 to achieve the change of the detection signal.

[0030] Furthermore, the upper cover 14 is clamped on the upper rear portion of the base 1, the upper front portion of the base 1 is clamped on the cam seat 15, the terminal IV3, the terminal V4, the conductive sheet 5, the cam 7 and the front portion of the long slider 2 are arranged between the base 1 and the cam seat 15, and the rear portion of the long slider 2 is arranged between the base 1 and the upper cover 14.

[0031] The other structures and connection relationships of the door lock of this embodiment 1 are the same as those of the door lock in the patent CN214170227U already disclosed by the applicant.

[0032] When the low-power door lock switch detection device of the utility model works, when the door hook is not inserted into the cam 7 of the door lock, the front end of the long slider 2 is pressed against the rear wall of the cam 7. At this time, the limiting protrusion 11 pushes the conductive sheet 5 backwards, so that the second contact 9 and the first contact 10 are separated, and the second contact 9 and the first contact 10 are opened. The circuits of terminal IV3 and terminal V4 are not conductive, and there is no detection signal, indicating that the door hook is not inserted into the door lock; when the door hook is inserted into the cam 7 of the door lock, the conductive sheet 5 is pressed backwards, so that the second contact 9 and the first contact 10 are separated, and the second contact 9 and the first contact 10 are opened. The movable cam 7 rotates upward around the rotating shaft 8, the front end of the long slider 2 moves forward to the slot 13 of the cam 7, and the limiting protrusion 11 moves forward at the same time, and the limiting protrusion 11 is limited by the rear wall of the limiting cavity 12 of the base 1, so as to realize the positioning of the long slider 2. At this time, the conductive sheet 5 returns to its original position, the second contact 9 is connected to the first contact 10, and the second contact 9 and the first contact 10 are closed, the terminal IV3 and the terminal V4 circuit are turned on, and there is a detection signal, indicating that the door hook is inserted into the door lock. The utility model detects whether the door hook is inserted into the door lock through the separate terminal IV3 and terminal V4 circuits, and does not need to be connected to the high-power device of the washing machine. Only low voltage and low current are required to realize the detection of the door hook action, and the power consumption is low.

Claims

1. A low-power door lock door opening and closing detection device, characterized in that: The invention comprises a base (1), a long slider (2), a terminal IV (3), a terminal V (4), a conductive sheet (5) and a cam (7); the long slider (2) is clamped on the base (1); the cam (7) is installed on the front inner wall of the base (1) through a rotating shaft (8); the front end of the long slider (2) is movably connected to the rear of the cam (7); the cam (7) rotates to drive the long slider (2) to move forward and backward and position; the terminal IV (3) and the terminal V (4) are arranged on the left side of the base (1); the right end of the terminal V (4) is connected to the conductive sheet (5); the right part of the terminal IV (3) is provided with a first contact (10); the conductive sheet (5) is provided with a second contact (9); the first contact (10) and the second contact (9) are in contact; a limiting protrusion (11) is arranged on the left side of the front part of the long slider (2); the left end of the limiting protrusion (11) is inserted between the right end of the conductive sheet (5) and the inner wall of the base (1) on the front side of the conductive sheet (5).

2. A low-power door lock opening and closing detection device according to claim 1, characterized in that: The limiting protrusion (11) is a triangular structure, and the smallest angle in the triangular structure is located between the conductive sheet (5) and the inner wall of the base (1) on the front side of the conductive sheet (5); when the long slider (2) moves backward, the limiting protrusion (11) moves backward at the same time, driving the right end of the conductive sheet (5) to move backward, separating the second contact (9) and the first contact (10), thereby realizing the opening of the second contact (9) and the first contact (10).

3. The low-power door lock opening and closing detection device according to claim 1 is characterized in that: A limiting cavity (12) is arranged on the left side of the front of the base (1); the left end of the cam (7) is arranged in the inner cavity of the limiting cavity (12); the left end of the limiting protrusion (11) is arranged between the right end of the conductive sheet (5) and the rear wall of the limiting cavity (12); the front of the long slider (2) and the rotating shaft (8) are arranged on the right side of the limiting cavity (12); and the right end of the terminal IV (3) is arranged on the left side of the limiting cavity (12).

4. A low-power door lock opening and closing detection device according to claim 3, characterized in that: A slot (13) is provided at the lower part of the cam (7), and the front part of the long slider (2) corresponds to the slot (13); when the cam (7) rotates upward around the rotating shaft (8), the long slider (2) moves forward, and the front part of the long slider (2) moves into the slot (13), and the limiting protrusion (11) is limited by the rear wall of the limiting cavity (12), so that the long slider (2) is positioned; when the cam (7) rotates downward around the rotating shaft (8), the cam (7) pushes the long slider (2) to move backward, and the front end of the long slider (2) is pressed against the rear wall of the cam (7), so that the long slider (2) is positioned.

5. The low-power door lock opening and closing detection device according to claim 1, characterized in that: The upper rear portion of the base (1) is clamped with an upper cover (14), the upper front portion of the base (1) is clamped with a cam seat (15), the terminal IV (3), the terminal V (4), the conductive sheet (5), the cam (7) and the front portion of the long slider (2) are arranged between the base (1) and the cam seat (15), and the rear portion of the long slider (2) is arranged between the base (1) and the upper cover (14).

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