Unhooking detection mechanism for household appliance door lock and household appliance door lock
By using a decoupling detection mechanism designed with chutes and limit columns in household appliance door locks, high-precision decoupling detection is achieved, solving the problems of large space occupation and insufficient accuracy, and improving the safety of household appliances.
Patent Information
- Application Number
- CN202421723635.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-21
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-21
AI Technical Summary
The decoupling detection mechanism of existing household appliance door locks occupies a large space and lacks accuracy, which cannot meet users' needs for high precision and limited installation space.
The decoupling detection mechanism is adopted, including the door lock housing, fixing plate, intermediate slider, trigger slider, return spring and micro switch. Through the design of the chute and limit column, the trigger slider slides in two directions to trigger the micro switch to achieve accurate detection.
High-precision decoupling detection is achieved, reducing space occupation and improving the safety of household appliances.
Smart Images
Figure CN223075317U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of household appliances, and specifically relates to a hook detachment detection mechanism for a household appliance door lock and a household appliance door lock. 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. The door lock generally includes at least a door lock catch and a door hook (or arm claw), and the door lock is locked through the cooperation of the door catch and the door hook. During the use of household appliances, it is necessary to ensure that the door lock catch and the door hook cannot be detached, otherwise it will be dangerous. There are various methods for detecting whether the door lock catch and the door hook are detached, such as reed switches, microswitches, optical position sensors, etc. However, as users' requirements for the functions of household appliances are getting higher and higher, more and more components are installed, and the installation space is becoming more and more precious. And users' requirements for the accuracy of detecting the door lock state are also getting higher and higher. Summary of the Invention
[0003] The technical problem to be solved by the utility model is to provide a hook detachment detection mechanism for a household appliance door lock and a household appliance door lock, and the hook detachment detection mechanism for the household appliance door lock occupies a small space and has high accuracy.
[0004] To achieve the above invention purpose, the utility model adopts the following technical solutions:
[0005] A hook detachment detection mechanism for a household appliance door lock includes a door lock housing, a fixing plate, an intermediate slider, a trigger slider, a return spring and a microswitch. The intermediate slider is slidably installed on the fixing plate, the return spring is installed between the intermediate slider and the fixing plate, the trigger slider is slidably installed at the tail of the intermediate slider, and the microswitch is installed on the door lock housing; a limiting post is arranged on the fixing plate, a guiding groove is arranged on the bottom surface of the trigger slider, the guiding groove includes an inclined groove, and the limiting post is in the guiding groove.
[0006] Further, the included angle between the inclined groove and the side of the trigger slider is an acute angle or an obtuse angle.
[0007] Further, the guiding groove further includes a transverse groove, and the transverse groove communicates with the inclined groove.
[0008] Further, the number of the guiding grooves is several.
[0009] Further, a spring groove is formed between the intermediate slider and the fixing plate, the spring groove is parallel to the length direction of the fixing plate, and the return spring is installed in the spring groove.
[0010] Further, an installation groove is provided at the tail of the intermediate slider, and the trigger slider is installed at the tail of the intermediate slider through the cooperation of the installation post and the installation groove.
[0011] Further, the intermediate slider includes a fixed part and a sliding part. The fixed part is fixedly installed on the fixed plate, and the trigger slider is slidably installed at the tail end of the sliding part.
[0012] Another improvement is to replace the guiding groove with a guide rail and replace the limiting post with a guiding groove.
[0013] A door lock for household appliances includes the above-mentioned decoupling detection mechanism for the door lock of household appliances.
[0014] For the decoupling detection mechanism for the door lock of household appliances and the door lock of household appliances disclosed by the present utility model, the displacement of the trigger slider can be decomposed into two directions, so the occupied space is small, the detection accuracy is higher, and the safety of household appliances is improved. When the fixed plate of the decoupling detection mechanism of the present utility model slides in the door lock, the trigger slider can trigger the microswitch within the entire sliding stroke and output corresponding signals, with a wide measurement range. The decoupling detection mechanism for the door lock of household appliances and the door lock of household appliances of the present utility model can be widely applied to household appliances such as dishwashers and washing machines. Description of the Drawings
[0015] Figure 1 It is a top view of the decoupling detection mechanism for the door lock of household appliances of the present utility model and the door lock catch in the decoupled state;
[0016] Figure 2 It is a top view of the decoupling detection mechanism for the door lock of household appliances of the present utility model and the door lock catch in the non-decoupled state.
[0017] Figure 3 For Figure 2 The bottom view of the structure shown;
[0018] Figure 4 It is a diagram of the positional relationship between the microswitch and the door lock housing;
[0019] Figure 5 It is a top view of the fixed plate;
[0020] Figure 6 It is a longitudinal sectional view of the fixed plate;
[0021] Figure 7 It is a top view of the trigger slider;
[0022] Figure 8 It is a longitudinal sectional view of the trigger slider;
[0023] Figure 9 It is a front view of the intermediate slider;
[0024] Figure 10 It is the top view of the middle slider.
[0025] In the figure: 1, door lock catch; 2, middle slider; 21, contact end; 22, installation groove; 3, fixing plate; 31, limiting post; 4, microswitch; 5, trigger slider; 51, guiding groove; 511, inclined groove; 512, horizontal groove; 6, installation post; 7, return spring; 8, door lock housing. Specific embodiments
[0026] The following will combine with the drawings to elaborate in detail on a hook - detachment detection mechanism for a household appliance door lock and the household appliance door lock proposed by the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by terms such as "left side", "right side", "upper part", "lower part", "bottom", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not represent the importance of the components, so it cannot be understood as a limitation to the present utility model. The specific dimensions and values adopted in this embodiment are only for illustrating the technical solution and do not limit the protection scope of the present utility model. The following embodiments all take the automatic - opening - and - closing door lock of the present utility model for a dishwasher as an example. However, it should be noted that the automatic - opening - and - closing door lock of the present utility model is not limited to being applied to a dishwasher.
[0027] As Figure 1 and 4 shown, a hook - detachment detection mechanism for a household appliance door lock disclosed by the present utility model includes a door lock housing 8, a fixing plate 3, a middle slider 2, a trigger slider 5, a return spring 7, and a microswitch 4. The middle slider 2 is slidably installed on the fixing plate 3, and the middle slider 2 can slide left and right relative to the fixing plate 3. The return spring 7 is installed between the middle slider 2 and the fixing plate 3, and the return spring 7 is used to reset the middle slider 2. The trigger slider 5 is slidably installed at the tail of the middle slider 2, and the trigger slider 5 can slide up and down relative to the middle slider 2. As Figure 4 shown, the microswitch 4 is fixedly installed on the door lock housing 8. As Figure 1 、 5 and 6 shown, limiting posts 31 are provided on the fixing plate 3; As Figure 1 、 7As shown in FIGS. 7 and 8, a guiding groove 51 is provided on the bottom surface of the trigger slider 5. The guiding groove 51 includes an inclined groove 511. The included angle between the inclined groove 511 and the side of the trigger slider is an acute angle or an obtuse angle (the function of this embodiment can be realized as long as it is not a right angle or a 0-degree angle). The limiting post 31 is in the guiding groove 51. The fixing plate 3 can be fixedly installed on the door lock housing 8 or can be slidably installed left and right on the door lock housing 8. A supporting structure (such as a hook or a groove, etc.) is provided at the tail of the fixing plate 3, and the tail of the trigger slider 5 is placed therein. This supporting structure plays a supporting role for the trigger slider 5 but does not limit the normal sliding of the trigger slider 5.
[0028] To accommodate a larger displacement of the intermediate slider 2, as Figure 1 、 7 As shown in FIGS. 7 and 8, the guiding groove 51 further includes a transverse groove 512, and the transverse groove 512 communicates with the inclined groove 511. The number of the guiding grooves 51 is several or can be one. Two guiding grooves 51 are shown in the figure.
[0029] As Figure 1 、 2 As shown in FIGS. 7 and 3, a spring groove is formed between the intermediate slider 2 and the fixing plate 3. The spring groove is parallel to the length direction of the fixing plate (the left-right direction in the figure), and the return spring 7 is installed in the spring groove. The return spring 7 can also be installed between the fixing plate and the trigger slider.
[0030] As Figure 1 、 9 As shown in FIGS. 7 and 10, an installation groove 22 is provided at the tail of the intermediate slider 2, and the trigger slider 5 is installed at the tail of the intermediate slider 2 through the cooperation of the installation post 6 and the installation groove 22.
[0031] The intermediate slider 2 can be an integral body and slide left and right relative to the fixing plate 3. Or, the intermediate slider 2 includes a fixed part and a sliding part. The fixed part is fixedly installed on the fixing plate 3, and the trigger slider 5 is slidably installed at the tail end of the sliding part.
[0032] In another improvement, the guiding groove 51 is replaced by a guide rail, and the limiting post 31 is replaced by a guiding groove.
[0033] A door lock for household appliances includes the above-mentioned decoupling detection mechanism for the door lock of household appliances.
[0034] The working process of the decoupling detection mechanism for the door lock of household appliances in this embodiment is as follows:
[0035] As Figure 1As shown, when the door lock arm claw disengages from the door lock catch 1, the contact end 21 of the intermediate slider 2 disengages from the edge of the door lock catch 1, and the intermediate slider 2 slides leftward relative to the fixed plate 3 under the action of the return spring 7. The trigger slider 5 slides leftward driven by the intermediate slider 2. At the same time, due to the limitation of the limit post 31 and the guide groove 51, the trigger slider 5 slides upward. When the trigger slider 5 slides upward to a certain position and no longer presses the micro switch 4, the micro switch 4 outputs a decoupling signal at this time.
[0036] As Figure 2 and 3 shown, when the door lock arm claw has not disengaged from the door lock catch 1, the contact end 21 of the intermediate slider 2 contacts the edge of the door lock catch 1, the return spring 7 is compressed, and the intermediate slider 2 slides rightward relative to the fixed plate 3. The trigger slider 5 slides rightward driven by the intermediate slider 2. At the same time, due to the limitation of the limit post 31 and the guide groove 51, the trigger slider 5 slides downward. When the trigger slider 5 slides to the position of the micro switch 4, it presses the micro switch 4, and the micro switch 4 outputs a non-decoupling signal. The trigger slider 5 continues to slide downward, keeps pressing the micro switch 4, and the micro switch 4 keeps outputting the non-decoupling signal, and the decoupling detection mechanism can continuously detect.
[0037] If the intermediate slider 2 continues to slide rightward, the limit post 31 enters the transverse groove 512 to prevent damage to the decoupling detection mechanism.
[0038] Based on the description of the preferred embodiments of the present invention, it should be clear that the present invention defined by the appended claims is not limited solely to the specific details set forth in the above description. Many obvious changes to the present invention without departing from the spirit or scope of the present invention may equally achieve the purpose of the present invention.
Claims
1. A decoupling detection mechanism for a door lock of a household appliance, characterized in that, It includes a door lock housing, a fixing plate, an intermediate slider, a trigger slider, a return spring and a microswitch. The intermediate slider is slidably mounted on the fixing plate. The return spring is installed between the intermediate slider and the fixing plate. The trigger slider is slidably mounted at the tail of the intermediate slider. The microswitch is mounted on the door lock housing. A limiting post is provided on the fixing plate. A guiding groove is provided on the bottom surface of the trigger slider. The guiding groove includes an inclined groove. The limiting post is in the guiding groove.
2. The decoupling detection mechanism for the door lock of a household appliance according to claim 1, characterized in that The included angle between the inclined groove and the side of the trigger slider is an acute angle or an obtuse angle.
3. The decoupling detection mechanism for a household appliance door lock according to claim 1, characterized in that, The guiding groove further includes a horizontal groove, and the horizontal groove communicates with the inclined groove.
4. The decoupling detection mechanism for a household appliance door lock according to claim 1, characterized in that, The number of the guiding grooves is several.
5. The decoupling detection mechanism for a household appliance door lock according to claim 1, characterized in that, A spring groove is formed between the intermediate slider and the fixing plate. The spring groove is parallel to the length direction of the fixing plate. The return spring is installed in the spring groove.
6. The decoupling detection mechanism for a household appliance door lock according to claim 1, characterized in that, An installation groove is provided at the tail of the intermediate slider. The trigger slider is installed at the tail of the intermediate slider through the cooperation of an installation post and the installation groove.
7. The decoupling detection mechanism for a household appliance door lock according to claim 1, characterized in that, The intermediate slider includes a fixed part and a sliding part. The fixed part is fixedly installed on the fixing plate. The trigger slider is slidably mounted at the tail end of the sliding part.
8. The decoupling detection mechanism for a household appliance door lock according to claim 1, characterized in that, Replace the guiding groove with a guide rail and replace the limiting post with a guiding groove.
9. A door lock for household appliances, comprising the hook detachment detection mechanism for the door lock of household appliances according to any one of claims 1 to 7.