Mechanism for detecting state of door lock and door lock for household appliance
By designing a mechanism for detecting the door lock status including a shell, door buckle, door hook, slider, spring, trigger rod and signal circuit, the problem of large space occupancy and low accuracy in the prior art door lock status detection method is solved, and door lock status detection with high accuracy and low space occupancy is realized, and the safety of household appliances is improved.
Patent Information
- Application Number
- CN202421401797.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The existing household appliance door lock status detection method occupies a large space and is not very accurate, making it difficult to meet the high requirements of users for functions and accuracy.
A mechanism for detecting the door lock status including a housing, a door buckle, a door hook, a slider, a spring, a trigger rod and a signal circuit is designed. The precise detection of the door lock status is achieved through the cooperation of the slider and a signal circuit.
The mechanism occupies a small space and has high detection accuracy. It can be mirrored when installed in pairs, avoids water in the circuit, improves safety, and considers abnormal situations such as door buckle damage, improves the safety of household appliances.
Smart Images
Figure CN222772038U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of household appliances, in particular to a mechanism for detecting a door lock state 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. Detecting the state of the door lock is essentially detecting the coordination 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 detect 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 detecting 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 state of a door lock and a door lock for household appliances. The mechanism for detecting the state of the door lock occupies a small space 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 a door lock state comprises a shell, a door catch, a door hook, a slider, a first spring, a trigger rod and a signal circuit, wherein a lock opening is arranged on the shell, and the door catch is hinged at the lock opening of the shell; the slider is slidably mounted on the shell, the slider comprises a contact rod and a slide groove rod, the contact rod contacts the door catch, a slide groove is arranged on the slide groove rod, and the slide groove comprises a first edge of the slide groove and a second edge of the slide groove; the first spring is used to keep the slider away from the signal circuit; the signal circuit comprises a first contact piece and a second contact piece fixedly mounted, and a second spring connecting the first contact piece and the second contact piece; one end of the trigger rod is a first end, and the other end is a second end, the first end of the trigger rod is located in the slide groove, and the second end of the trigger rod is connected to the second spring.
[0006] Furthermore, the door catch is a cam structure.
[0007] 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.
[0008] Furthermore, the sliding block includes a stopper, which is used to prevent the door hook from passing through the lock hole when the door buckle is in the third state.
[0009] Furthermore, the sliding block includes a spring slot, and the spring slot is used to place the first spring.
[0010] Furthermore, a fixing protrusion is provided at one end of the spring slot, one end of the first spring is fixed to the fixing protrusion, and the other end of the first spring is fixed to the housing.
[0011] Another improvement, a mechanism for detecting the state of a door lock, comprises a shell, a door catch, a door hook, a slider, a first spring, a trigger rod and a signal circuit, wherein a lock opening is arranged on the shell, and the door catch is hinged at the lock opening of the shell; the tail end of the door catch and the shell are connected by a torsion spring; the slider is slidably mounted on the shell, the slider comprises a contact rod and a slide groove rod, the contact rod contacts the door catch, a slide groove is arranged on the slide groove rod, the slide groove comprises a first edge of the slide groove and a second edge of the slide groove; the first spring is used to keep the slider away from the signal circuit; the signal circuit comprises a first contact piece and a second contact piece fixedly mounted, and a second spring, wherein the first contact piece and the second contact piece are not in contact with the second spring; one end of the trigger rod is a first end, and the other end is a second end, the first end of the trigger rod is located in the slide groove, and the second end of the trigger rod is connected to the second spring.
[0012] Furthermore, the door catch is a cam structure.
[0013] Furthermore, the sliding block includes a stopper, which is used to prevent the door hook from passing through the lock hole when the door buckle is in the third state.
[0014] A door lock for household appliances comprises the above-mentioned mechanism for detecting the door lock state.
[0015] The utility model discloses a mechanism for detecting the state of a door lock and a door lock for household appliances, which occupies a small space and can be mirrored when installed in pairs, with the ends provided with circuits placed at the bottom to prevent water from entering the circuits, which is safer; the detection accuracy is higher, and abnormal situations such as door buckle damage are taken into consideration, thereby improving the safety of household appliances. The utility model discloses a mechanism for detecting the 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
[0016] Figure 1 This is a top view of the structure of a mechanism for detecting the door lock state of the utility model;
[0017] Figure 2 It is a schematic diagram of a mechanism for detecting the state of a door lock of the utility model when the door lock is in an open state;
[0018] Figure 3 A schematic diagram of a mechanism for detecting a door lock state of the utility model when the door lock is in a locked state;
[0019] Figure 4It is a schematic diagram of a mechanism for detecting the state of a door lock of the utility model when the door lock is in an abnormal state;
[0020] Figure 5 It is a top view of the slider of the utility model;
[0021] Figure 6 A top view of another slider of the utility model;
[0022] Figure 7 It is a partial schematic diagram of the signal circuit of the utility model;
[0023] Figure 8 It is a three-dimensional diagram of the door buckle of the utility model;
[0024] Fig. 9 This is a schematic diagram of the door hook structure of the utility model.
[0025] In the figure: 1, shell, 11, lock, 2, door buckle, 3, door hook, 4, slider, 41, contact rod, 42, slide rod, 421, slide, 4211, first edge of slide, 4212, second edge of slide, 43, spring groove, 431, fixed protrusion, 44, stopper, 5, trigger rod, 51, first end of trigger rod, 52, second end of trigger rod, 6, signal circuit, 61, first contact piece, 62, second contact piece, 63, second spring, 7, torsion spring. DETAILED DESCRIPTION
[0026] In conjunction with the accompanying drawings, a mechanism for detecting the 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. Embodiment 1
[0027] like Figure 1 and 2As shown, the present invention discloses a mechanism for detecting the door lock state, comprising a housing 1, a door catch 2, a door hook 3, a slider 4, a first spring, a trigger rod 5 and a signal circuit 6. A lock opening 11 is provided on the housing, and the door catch 2 is hinged at the lock opening 11 of the housing 1. The tail end of the door catch 2 is connected to the housing 1 (or the box cover) through a torsion spring 7. The slider 4 is slidably mounted on the housing 1; Figure 5 and 6 The slider 4 includes a contact rod 41 and a slide rod 42. The contact rod 41 contacts the door catch 2. The slide rod 42 is provided with a slide groove 421. The slide groove 421 includes a first slide groove edge 4211 and a second slide groove edge 4212. The first spring is used to keep the slider away from the signal circuit. Figure 2 In the middle, the slider 4 moves to the left, and a tension spring or a compression spring can be used. Figure 7 As shown, the signal circuit 6 includes a first contact piece 61 and a second contact piece 62 that are fixedly installed, and a second spring 63 that connects the first contact piece 61 and the second contact piece 62. The trigger rod 5 has one end as a first end and the other end as a second end. The first end 51 of the trigger rod is located in the slide slot 421, and the second end 52 of the trigger rod is connected to the second spring 63.
[0028] Preferably, the door buckle 2 is a cam structure. Figure 8 As shown, the door catch 2 includes a jaw 21. Fig. 9 As shown, the door hook 3 includes a hook groove 31 , and the door buckle 2 and the door hook 3 are buckled together through the jaws 21 and the hook groove 31 .
[0029] like Figure 5 As shown, the slider 4 also includes a stopper 44, which is used to prevent the door hook 3 from passing through the lock hole 11 when the door buckle 2 is in the third state. The slider 4 also includes a spring slot 43, which is used to place the first spring. A fixing protrusion 431 is set at one end of the spring slot 43, one end of the first spring is fixed to the fixing protrusion 431, and the other end of the first spring is fixed to the housing 1. At this time, the first spring is a compression spring.
[0030] like Figure 6 As shown, the slider 4 can be a single-sided structure and does not need to form a rectangular frame.
[0031] like Figure 2 As shown, when the door catch is disengaged from the door hook, the door lock is in the open state, the first edge of the slide groove abuts against the first end of the trigger rod, the second spring is disengaged from the first contact piece under the pressure of the second end of the trigger rod, and the signal circuit is disconnected. The household appliance determines that the door lock is in the open state at this time and stops working.
[0032] like Figure 3As shown, when the door catch is engaged with the door hook, the door lock is in a locked state, the first edge of the slide slot and the second edge of the slide slot do not contact the first end of the trigger rod, the second spring is in a natural state, and the signal circuit is open. The household appliance determines that the door lock is in a locked state at this time, and one of the conditions for opening the door lock is met.
[0033] like Figure 4 As shown, the door buckle is in the third state, at which time the door lock is in an abnormal state, such as the door buckle is broken, the jaw is broken or other abnormalities occur, the second edge of the slide groove abuts against the first end of the trigger rod, the second spring is squeezed by the second end of the trigger rod and disengages from the second contact piece, and the signal circuit is disconnected. The household appliance determines that the door lock is in an abnormal state at this time and stops working.
[0034] A door lock for household appliances comprises the above-mentioned mechanism for detecting the door lock state. Embodiment 2
[0035] The difference between the second embodiment and the first embodiment is that the signal circuit is different. Specifically, in the second embodiment, the signal circuit includes a first contact piece and a second contact piece that are fixedly installed, and a second spring, and the first contact piece and the second contact piece are not in contact with the second spring.
[0036] When the door catch is disengaged from the door hook, the door lock is in an open state, the first edge of the slide groove abuts against the first end of the trigger rod, the second spring contacts the second contact piece under the pressure of the second end of the trigger rod, and the signal circuit is connected. The household appliance determines that the door lock is in an open state at this time and stops working.
[0037] When the door catch is engaged with the door hook, the door lock is in a locked state, the first edge of the slide slot and the second edge of the slide slot do not contact the first end of the trigger rod, the second spring is in a natural state, and the signal circuit is disconnected. The household appliance determines that the door lock is in a locked state at this time, and one of the conditions for opening the door lock is met.
[0038] The door buckle is in the third state, when the door lock is in an abnormal state, such as the door buckle is broken, the jaw is broken or other abnormalities occur, the second edge of the slide groove abuts against the first end of the trigger rod, the second spring contacts the first contact piece under the pressure of the second end of the trigger rod, and the signal circuit is connected. The household appliance determines that the door lock is in an abnormal state and stops working.
[0039] 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 a door lock state, characterized in that: It includes a shell, a door catch, a door hook, a slider, a first spring, a trigger rod and a signal circuit, the shell is provided with a lock mouth, and the door catch is hinged at the lock mouth of the shell; the slider is slidably installed on the shell, the slider includes a contact rod and a slide groove rod, the contact rod is in contact with the door catch, the slide groove rod is provided with a slide groove, and the slide groove includes a first edge of the slide groove and a second edge of the slide groove; the first spring is used to keep the slider away from the signal circuit; the signal circuit includes a first contact piece and a second contact piece fixedly installed, and a second spring connecting the first contact piece and the second contact piece; one end of the trigger rod is a first end, and the other end is a second end, the first end of the trigger rod is located in the slide groove, and the second end of the trigger rod is connected to the second spring.
2. The mechanism for detecting door lock status according to claim 1, characterized in that: The door buckle is a cam structure.
3. The mechanism for detecting door lock status 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.
4. The mechanism for detecting door lock status according to claim 1, characterized in that: The sliding block comprises a stopper, and the stopper is used to prevent the door hook from passing through the lock opening when the door buckle is in the third state.
5. The mechanism for detecting door lock status according to claim 1, characterized in that: The sliding block comprises a spring slot, and the spring slot is used for placing a first spring.
6. The mechanism for detecting door lock status according to claim 5, characterized in that: A fixing protrusion is arranged at one end of the spring slot, one end of the first spring is fixed to the fixing protrusion, and the other end of the first spring is fixed to the housing.
7. A mechanism for detecting a door lock state, characterized in that: It includes a shell, a door catch, a door hook, a slider, a first spring, a trigger rod and a signal circuit, a lock mouth is arranged on the shell, and the door catch is hinged at the lock mouth of the shell; the tail end of the door catch is connected to the shell by a torsion spring; the slider is slidably installed on the shell, the slider includes a contact rod and a slide groove rod, the contact rod is in contact with the door catch, a slide groove is arranged on the slide groove rod, and the slide groove includes a first edge of the slide groove and a second edge of the slide groove; the first spring is used to keep the slider away from the signal circuit; the signal circuit includes a first contact piece and a second contact piece fixedly installed, and a second spring, and the first contact piece and the second contact piece are not in contact with the second spring; one end of the trigger rod is the first end, and the other end is the second end, the first end of the trigger rod is located in the slide groove, and the second end of the trigger rod is connected to the second spring.
8. The mechanism for detecting door lock status according to claim 7, characterized in that: The door buckle is a cam structure.
9. The mechanism for detecting door lock status according to claim 7, characterized in that: The sliding block comprises a stopper, and the stopper is used to prevent the door hook from passing through the lock opening when the door buckle is in the third state.
10. A door lock for a household appliance, comprising the mechanism for detecting the door lock state according to any one of claims 1 to 9.