Mechanism for detecting opening and closing states of door lock and door lock for household appliance

Abstract

The utility model discloses a mechanism for detecting the opening and closing state of a door lock and the door lock for household appliances, and the mechanism for detecting the opening and closing state of the door lock comprises a shell, a door holder, a door hook, a first sliding rod, a second sliding rod, a spring and a microswitch. According to the mechanism for detecting the opening and closing state of the door lock and the door lock for the household appliance, a hole does not need to be formed in the front end of the door plate, the door signal microswitch is directly integrated in the door lock, the appearance of the whole household appliance is attractive, the monitoring accuracy is higher, and the safety of the household appliance is improved. The mechanism for detecting the opening and closing state of the door lock and the door lock for the household appliances can be widely applied to the household appliances such as dish washing machines and washing machines.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, in particular to a mechanism for detecting the switch state of a door lock and a door lock used for household appliances. Background Art

[0002] For the safety of users during use, household appliances with doors (such as washing machines and dishwashers) are generally equipped with door locks, and stop working when the door locks are opened. Door locks generally include at least a door catch and a door hook, and the door lock is locked by the cooperation of the door catch and the door hook. Monitoring the state of the door lock is essentially monitoring the cooperation state of the door catch and the door hook, that is, whether the door hook is separated from the door catch. There are many ways to monitor the state of the door lock, such as reed switches, micro switches, optical position sensors, etc. However, as users have higher and higher requirements for the functions of household appliances, more and more components are installed, and the installation space is becoming more and more precious. Users have higher and higher requirements for the accuracy of monitoring the state of the door lock. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a mechanism for detecting the switch state of a door lock and a door lock for household appliances. The mechanism for detecting the switch state of the door lock does not require a hole to be opened in a front door plate and has high precision.

[0004] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0005] A mechanism for detecting the switch state of a door lock comprises a housing, a door catch, a door hook, a first slide bar, a second slide bar, a spring and a micro switch. A lock opening is arranged on the housing, and the door catch is hinged at the lock opening of the housing; the first slide bar and the second slide bar are slidably mounted on the housing, and the first slide bar and the second slide bar are at a certain angle and contact each other; the spring is used to make the first slide bar close to the door catch;

[0006] When the door catch is disengaged from the door hook, the door catch is in a first state, the tail end of the first slide bar is close to the first position of the second slide bar, and the second slide bar is in contact with the micro switch; in the first state, the first slide bar presses against the second slide bar, and the micro switch is disconnected.

[0007] When the door catch is engaged with the door hook, the door catch is in the second state, the tail end of the first slide bar is close to the second position of the second slide bar, and the second slide bar is not in contact with the micro switch. In the second state, the first slide bar is separated from the second slide bar, and the second slide bar reaches the second position in a free state, the micro switch is not triggered by force, and the micro switch remains closed.

[0008] Furthermore, the included angle between the first sliding bar and the second sliding bar is an acute angle or a right angle.

[0009] Furthermore, the door catch is a cam structure.

[0010] Furthermore, the door catch includes a jaw, and the door hook includes a hook groove, and the door catch and the door hook are buckled together through the jaw and the hook groove.

[0011] Furthermore, one end of the spring is fixed to the head end of the first sliding rod, and the other end of the spring is fixed to the housing.

[0012] A door lock for household appliances comprises the above-mentioned mechanism for detecting the switch state of the door lock.

[0013] The utility model discloses a mechanism for detecting the switch state of a door lock and a door lock for household appliances, which occupies a small space and does not require a hole to be opened at the front end of a door panel. The door signal micro switch is directly integrated inside the door lock, and the household appliance has a beautiful appearance, higher monitoring accuracy, and improved safety of the household appliance. The utility model discloses a mechanism for detecting the switch state of a door lock and a door lock for household appliances, which can be widely used in household appliances such as dishwashers and washing machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a mechanism for detecting the switch state of a door lock of the utility model when the door lock is in an open state;

[0015] Figure 2 for Figure 1 AA section view;

[0016] Figure 3 A schematic diagram of a mechanism for detecting the switch state of a door lock according to the utility model when the door lock is in a locked state;

[0017] Figure 4 for Figure 3 BB section view;

[0018] Figure 5 This is a schematic diagram of the contact between the first sliding bar and the second sliding bar of the utility model;

[0019] Figure 6 This is a schematic diagram of the contact between the door buckle and the first slide bar of the utility model;

[0020] Figure 7 This is a schematic diagram of a mechanism for detecting the switch state of a door lock according to the present invention when the door lock is in an open state (showing the spring).

[0021] In the figure: 1, housing, 11, lock, 2, door catch, 3, door hook, 4, first slide bar, 41, tail end of first slide bar, 5, second slide bar, 51, first position of tail end of second slide bar, 52, second position of tail end of second slide bar, 6, micro switch, 7, torsion spring. DETAILED DESCRIPTION

[0022] In conjunction with the accompanying drawings, a mechanism for detecting the switch state of a door lock and a door lock for household appliances proposed in the present invention are described in detail below. In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", "bottom" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second" and the like do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions and values ​​used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention. The following embodiments all take the automatic door lock of the present invention for use in a dishwasher as an example, but it should be noted that the automatic door lock of the present invention is not limited to dishwashers.

[0023] like Figure 1 and 2 As shown, the utility model discloses a mechanism for detecting the switch state of a door lock, comprising a shell 1, a door catch 2, a door hook 3, a first slide bar 4, a second slide bar 5, a spring and a micro switch 6. A lock opening 11 is provided on the shell 1, and the door catch 2 is hinged at the lock opening 11 of the shell 1. The tail end of the door catch 2 and the shell 1 (or upper cover) are connected via a torsion spring 7. The first slide bar 4 and the second slide bar 2 are slidably mounted on the shell, the first slide bar 4 is installed from the upper right to the lower left, and the second slide bar 5 is installed horizontally. The first slide bar 4 and the second slide bar 2 form a certain angle and contact each other. The angle is preferably an acute angle, but can also be other angles. Figure 7 As shown, one end of the spring is fixed to the head end of the first slide bar 4, and the other end of the spring is fixed to the housing 1. The spring is used to make the first slide bar 4 close to the door buckle 2. Figure 1 The spring makes the first slide bar 4 move to the lower left. Figure 6 The contact state between the door catch 2 and the first slide bar 4 is shown.

[0024] like Figure 1 , 2 As shown in FIG. 5 , when the door catch 2 is separated from the door hook 3, the door catch 2 is in the first state, the first slide bar tail end 41 is close to the second slide bar tail end first position 51, and the second slide bar 5 is in contact with the micro switch 6. The household appliance determines that the door lock is opened at this time.

[0025] During the process of the door catch 2 and the door hook 3 being combined, the door catch 2 rotates, thereby pressing the first slide bar 4 to move to the upper right direction, and the second slide bar 5 to move to the left. When the door catch 2 and the door hook 3 are buckled, the door catch 2 is in the second state, the tail end 41 of the first slide bar is close to the second position 52 of the tail end of the second slide bar (but not in contact), and the second slide bar 5 is in contact with the micro switch 6. The household appliance determines that the door lock is locked at this time.

[0026] Preferably, the door buckle 2 is a cam structure. The door buckle 2 includes a jaw, and the door hook 3 includes a hook groove, and the door buckle and the door hook are buckled together through the jaw and the hook groove.

[0027] A door lock for household appliances comprises the above-mentioned mechanism for detecting the switch state of the door lock.

[0028] A door lock for household appliances comprises the above-mentioned mechanism for detecting the switch state of the door lock.

[0029] Based on the description of the preferred embodiments of the utility model, it should be clear that the utility model defined by the attached claims is not limited to the specific details described in the above description, and many obvious changes to the utility model that do not depart from the spirit or scope of the utility model may also achieve the purpose of the utility model.

Claims

1. A mechanism for detecting the switch status of a door lock, characterized in that: It comprises a housing, a door catch, a door hook, a first slide bar, a second slide bar, a spring and a micro switch; a lock opening is arranged on the housing, and the door catch is hinged at the lock opening of the housing; the first slide bar and the second slide bar are slidably mounted on the housing, the first slide bar and the second slide bar are at a certain angle and contact each other; the spring is used to make the first slide bar close to the door catch; When the door catch is disengaged from the door hook, the door catch is in a first state, the tail end of the first slide bar is close to the first position of the second slide bar, and the second slide bar is in contact with the micro switch; When the door catch is engaged with the door hook, the door catch is in a second state, the tail end of the first slide bar is close to the second position of the second slide bar, and the second slide bar is not in contact with the micro switch.

2. The mechanism for detecting the door lock switch state according to claim 1, characterized in that: The included angle between the first sliding bar and the second sliding bar is an acute angle or a right angle.

3. The mechanism for detecting the door lock switch state according to claim 1, characterized in that: The door buckle is a cam structure.

4. The mechanism for detecting the door lock switch state according to claim 1, characterized in that: The door buckle comprises a jaw, and the door hook comprises a hook groove, and the door buckle and the door hook are buckled together through the jaw and the hook groove.

5. The mechanism for detecting the door lock switch state according to claim 1, characterized in that: One end of the spring is fixed to the head end of the first sliding rod, and the other end of the spring is fixed to the housing.

6. A door lock for household appliances, comprising the mechanism for detecting the switch state of the door lock according to any one of claims 1 to 5.

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