An electrical door lock

Abstract

The present invention proposes an electric door lock, comprising a door contact switch, a locking contact switch, a locking electromagnetic drive mechanism and a door opening electromagnetic drive mechanism, wherein the locking electromagnetic drive mechanism has a first locking electromagnetic mechanism terminal and a second locking electromagnetic mechanism terminal, and the door opening electromagnetic drive mechanism has a first door opening electromagnetic mechanism terminal and a second door opening electromagnetic mechanism terminal, wherein the first locking electromagnetic mechanism terminal is connected in parallel with the first door opening electromagnetic mechanism terminal and is electrically connected to one end of the door contact switch, and the other end of the door contact switch is electrically connected to the second terminal of the door lock; the second locking electromagnetic mechanism terminal is electrically connected to the first terminal of the door lock, and the second door opening electromagnetic mechanism terminal is electrically connected to the fourth terminal of the door lock; one end of the locking contact switch is connected between the door contact switch and the second terminal of the door lock, and the other end is electrically connected to the third terminal. The electric door lock can reduce manufacturing costs and work more reliably.

Description

[Technical field]

[0001] The invention relates to the technical field of door locks, in particular to an electrical door lock. [Background technology]

[0002] A door lock installed on a household appliance (such as a washing machine) that automatically releases the door of the appliance (such as a washing machine door), see Figure 1 The door lock is provided with a locking electromagnetic drive mechanism and a door opening electromagnetic drive mechanism and a plurality of connection terminals 100. The locking electromagnetic drive mechanism generally includes a door contact switch 1, a locking contact switch 2, a locking electromagnetic drive mechanism 3, and a thermal protection, and the door opening electromagnetic drive mechanism includes a door opening electromagnetic mechanism 4.

[0003] However, the two drive mechanisms of the door locks currently on the market are electrically connected separately, which brings the following problems: 1. The output connection port of the door lock is not shared, and an output interface is added. 2. The door opening electromagnetic drive coil does not share the door closing switch, thermal protection, etc. of the locking electromagnetic mechanism. In the event of electromagnetic interference or program bugs, the door opening electromagnetic drive coil is always energized and may burn out. [Summary of the invention]

[0004] The purpose of the present invention is to solve the problems in the prior art and to provide an electrical door lock that can reduce manufacturing costs and work more reliably.

[0005] To achieve the above-mentioned purpose, the present invention proposes an electrical door lock, which includes a door contact switch, which responds to the closing of the door, a locking contact switch, whose switch state indicates whether the door is locked or unlocked, and also includes a locking electromagnetic drive mechanism and a door opening electromagnetic drive mechanism, the locking electromagnetic drive mechanism has a first locking electromagnetic mechanism terminal and a second locking electromagnetic mechanism terminal, the door opening electromagnetic drive mechanism has a first door opening electromagnetic mechanism terminal and a second door opening electromagnetic mechanism terminal, the first locking electromagnetic mechanism terminal is connected in parallel with the first door opening electromagnetic mechanism terminal and is electrically connected to one end of the door contact switch, and the other end of the door contact switch is electrically connected to the second terminal of the door lock; the second locking electromagnetic mechanism terminal is electrically connected to the first terminal of the door lock, and the second door opening electromagnetic mechanism terminal is electrically connected to the fourth terminal of the door lock; one end of the locking contact switch is connected between the door contact switch and the second terminal of the door lock, and the other end is electrically connected to the third terminal.

[0006] Preferably, a PTC is further included, and the PTC is connected between the parallel node of the first locking electromagnetic mechanism terminal and the first door opening electromagnetic mechanism terminal and the door contact switch.

[0007] Preferably, the second locking electromagnetic mechanism terminal is electrically connected to the first terminal of the door lock via a spring.

[0008] Preferably, the second door opening electromagnetic mechanism terminal is electrically connected to the fourth terminal of the door lock via a spring.

[0009] Preferably, the first door-opening electromagnetic mechanism terminal and the PTC are electrically connected via a spring.

[0010] Preferably, the first locking electromagnetic mechanism terminal and the PTC are electrically connected via a spring.

[0011] Preferably, the locking contact switch is driven by a locking electromagnetic drive mechanism to open or close.

[0012] Beneficial effects of the present invention: The output connection port of the door lock of the present invention adopts a common wiring terminal as an output interface, so that the door opening electromagnetic drive coil can share the door contact switch, thermal protection, etc. of the locking electromagnetic mechanism. When electromagnetic interference or program bug occurs, the risk of burning caused by the door opening electromagnetic drive mechanism being constantly powered on is effectively avoided.

[0013] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0014] Figure 1 Circuit diagram of door lock in the prior art;

[0015] Figure 2 is a circuit diagram of embodiment 1 of the present invention;

[0016] Figure 3 is a circuit diagram of embodiment 2 of the present invention;

[0017] Figure 4 is a schematic diagram of the circuit structure of embodiment 2 of the present invention;

[0018] Figure 5 is a cross-sectional view of the internal structure of Example 2 of the present invention;

[0019] Figure 6 It is a schematic diagram of the internal structure explosion of Example 2 of the present invention. [Specific implementation method]

[0020] Example 1

[0021] See also Figure 2The present invention provides an electrical door lock, which includes a door contact switch 1 arranged in a housing 101, which responds to the closing of the door, a locking contact switch 2, whose switch state indicates whether the door is locked or unlocked, and a locking electromagnetic drive mechanism 3 and a door opening electromagnetic drive mechanism 4, wherein the locking electromagnetic drive mechanism 3 has a first locking electromagnetic mechanism terminal 31 and a second locking electromagnetic mechanism terminal 32, and the door opening electromagnetic drive mechanism 4 has a first door opening electromagnetic mechanism terminal 41 and a second door opening electromagnetic mechanism terminal 42, wherein the first locking electromagnetic mechanism terminal 31 is connected in parallel with the first door opening electromagnetic mechanism terminal 41 and is electrically connected to one end of the door contact switch 1, and the other end of the door contact switch 1 is electrically connected to the second wiring terminal 20 of the door lock; the second locking electromagnetic mechanism terminal 32 is electrically connected to the first wiring terminal 10 of the door lock, and the second door opening electromagnetic mechanism terminal 42 is electrically connected to the fourth wiring terminal 40 of the door lock; one end of the locking contact switch 2 is connected between the door contact switch 1 and the second wiring terminal 20 of the door lock, and the other end is electrically connected to the third wiring terminal 30.

[0022] Furthermore, the second locking electromagnetic mechanism terminal 32 is electrically connected to the first wiring terminal 10 of the door lock via a spring.

[0023] Furthermore, the second door-opening electromagnetic mechanism terminal 42 is electrically connected to the fourth terminal 40 of the door lock via a spring.

[0024] Furthermore, the first door-opening electromagnetic mechanism terminal 41 and the PTC5 are electrically connected via a spring.

[0025] Furthermore, the first locking electromagnetic mechanism terminal 31 and the PTC 5 are electrically connected via a spring.

[0026] Furthermore, the locking contact switch 2 is driven by the locking electromagnetic driving mechanism 3 to be opened or closed.

[0027] Furthermore, the locking electromagnetic drive mechanism 3 and the door opening electromagnetic drive mechanism 4 are both electromagnetic coils.

[0028] Example 2

[0029] See also Figures 3 to 6 The present invention adds PTC5 on the basis of Example 1. Specifically, in this embodiment, PTC5 is connected between the parallel node of the first locking electromagnetic mechanism terminal 31, the first door opening electromagnetic mechanism terminal 41 and the door contact switch 1.

[0030] Working process of the present invention:

[0031] The present invention discloses an electrical door lock, which electrically connects two locking modules and a door opening module, and the two modules use a common wiring terminal as an output interface, so that the door opening electromagnetic drive coil can share the door contact switch, thermal protection, etc. of the locking electromagnetic mechanism. When electromagnetic interference or program bug occurs, the risk of burning caused by the door opening electromagnetic drive mechanism being constantly powered on is effectively avoided. The present invention can achieve a more economical manufacturing cost and work more reliably.

[0032] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. An electrical door lock, comprising a door contact switch (1) which responds to the closing of a door, a locking contact switch (2) whose switch state indicates whether the door is locked or unlocked, and a locking electromagnetic drive mechanism (3) and a door opening electromagnetic drive mechanism (4), wherein the locking electromagnetic drive mechanism (3) has a first locking electromagnetic mechanism terminal (31) and a second locking electromagnetic mechanism terminal (32), and the door opening electromagnetic drive mechanism (4) has a first door opening electromagnetic mechanism terminal (41) and a second door opening electromagnetic mechanism terminal (42), characterized in that: The first locking electromagnetic mechanism terminal (31) is connected in parallel with the first door opening electromagnetic mechanism terminal (41) and is electrically connected to one end of a door contact switch (1); the other end of the door contact switch (1) is electrically connected to a second wiring terminal (20) of the door lock; The second locking electromagnetic mechanism terminal (32) is electrically connected to the first wiring terminal (10) of the door lock, and the second door opening electromagnetic mechanism terminal (42) is electrically connected to the fourth wiring terminal (40) of the door lock; One end of the locking contact switch (2) is connected between the door contact switch (1) and the second wiring terminal (20) of the door lock, and the other end is electrically connected to the third wiring terminal (30); It also includes a PTC (5), wherein the PTC (5) is connected between a parallel node of the first locking electromagnetic mechanism terminal (31) and the first door opening electromagnetic mechanism terminal (41) and the door contact switch (1); The second locking electromagnetic mechanism terminal (32) is electrically connected to the first wiring terminal (10) of the door lock via a spring; The second door-opening electromagnetic mechanism terminal (42) is electrically connected to the fourth wiring terminal (40) of the door lock via a spring.

2. An electrical door lock according to claim 1, characterized in that: The first door-opening electromagnetic mechanism terminal (41) and the PTC (5) are electrically connected via a spring.

3. An electrical door lock according to claim 1, characterized in that: The first locking electromagnetic mechanism terminal (31) and the PTC (5) are electrically connected via a spring.

4. An electrical door lock according to claim 1, characterized in that: The locking contact switch (2) is driven by a locking electromagnetic drive mechanism (3) to be opened or closed.

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