Door lock device and dish washing machine
By introducing a trigger abutment block, transmission components, and actuating elements into the dishwasher door lock device, the problem of the latch arm not being securely connected to the door bolt is solved, achieving reliable confirmation of the door bolt locking and improving security.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI HONGSHENGCHANG ELECTRONICS CO LTD
- Filing Date
- 2025-03-20
- Publication Date
- 2026-04-17
AI Technical Summary
In existing dishwasher door lock devices, the latch arm and the door bolt are not securely connected, posing a risk of the latch coming loose, and there is a lack of an effective status confirmation mechanism.
A door lock device is designed, including a door bolt, a door lock housing, a door bolt locking structure, and a door bolt confirmation structure. By cooperating with a trigger abutment block, a transmission component, and an actuating element, the locking state of the door bolt is confirmed, and a signal is sent through the transmission component to ensure a secure connection between the door bolt and the latch arm.
It enables the confirmation of the secure connection between the bolt and the latch arm, ensuring the reliability of the door lock device, preventing the bolt from coming loose, and enhancing the user's sense of security and user experience.
Smart Images
Figure CN224134418U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of household appliances, and in particular to a door lock device and a dishwasher. Background Technology
[0002] Some household appliances typically have an appliance body, such as a dishwasher, within which a product handling chamber is formed. A door is mounted on the appliance body to pivot about a horizontal axis; the door is used to close the entry opening to the product handling chamber. During operation of the appliance, the door should be securely locked to prevent products being processed within the chamber from escaping from the machine and potentially endangering people standing nearby. Therefore, locking mechanisms are usually provided to keep the door closed.
[0003] For example, patent CN221730457U provides a locking device including a bolt, a locking part, a pushing component, a pair of movable latch arms, a pair of elastic members corresponding to the latch arms, and a housing. The pushing component is fixed inside the housing. One end of each latch arm is hinged to the housing and the other end is free. Both ends of the elastic members are fixed to the pair of latch arms respectively. The pushing component abuts against the latch arms. The latch arms can be pushed by the pushing component or squeezed by the bolt to move in opposite directions, or pushed by the elastic members to move relative to each other.
[0004] The door lock device of the aforementioned dishwasher has the following problem: the latch arms are connected by elastic elements, so the door bolt may not be firmly connected to the latch arms and may come out unexpectedly. The existing solutions do not have a solution to confirm the connection status between the door bolt and the latch arms. Utility Model Content
[0005] In view of this, it is necessary to provide a door lock device and a dishwasher that can confirm the engagement state of the door bolt and latch arm.
[0006] This utility model provides a door lock device, including: a door bolt,
[0007] bolt,
[0008] A door lock housing, wherein the door lock housing has a notch corresponding to the door bolt;
[0009] The bolt locking structure is disposed within the door lock housing for locking the bolt within the notch; and
[0010] The bolt confirmation structure includes a trigger abutment block, a transmission assembly, and an actuating element. The trigger abutment block has an abutment end that abuts against the bolt in the notch. The actuating element is fixed inside the door lock housing. One end of the transmission assembly is connected to the trigger abutment block, and the other end abuts against the actuating element, for triggering the actuating element under the drive of the trigger abutment block.
[0011] In other embodiments, the trigger abutment block has an engagement hole at one end near the bolt, and an engagement protrusion extending from the bolt to match the engagement hole.
[0012] In other embodiments, the transmission assembly includes a push rod, a wedge block, and a swing rod. One end of the push rod is connected to the trigger abutment block, and the other end is fixed to the wedge block. The wedge block is slidably disposed within the door lock housing. The swing rod is translatably disposed within the door lock housing. The swing rod abuts against the inclined surface of the wedge block, and the swing rod extends to form a trigger portion for triggering the actuating element.
[0013] In other embodiments, the bolt locking structure includes a telescopic component and a locking component. The telescopic component is disposed within the door lock housing and has a telescopic end that can actively extend or retract relative to the notch. The locking component is fixed to the telescopic end and is used to lock the bolt. The telescopic component can drive the locking component to extend or retract relative to the notch.
[0014] In other embodiments, the locking assembly includes a locking housing, a limiting member, and two latch arms capable of relative movement and encircling the bolt. The locking housing is connected to the telescopic assembly, one end of each latch arm is hinged to the locking housing, and both ends of the limiting member are respectively connected to the other ends of the latch arms to apply a force to the latch arms to restrict their opposite movement.
[0015] In other embodiments, a screw protruding from the inner surface of the locking housing is fixed inside the housing, and a waist-shaped hole is provided on the trigger abutment block. The screw passes through the waist-shaped hole, and the cooperation between the screw and the waist-shaped hole is used to limit the movement distance of the trigger abutment block.
[0016] In other embodiments, the locking assembly further includes a pressing component, and pressing through holes are respectively provided on both sides of the locking housing. The pressing component extends into the locking housing through the pressing through holes and flexibly abuts against the latch arm to prevent the latch arm from moving in opposite directions.
[0017] In other embodiments, the pressing component includes a pressing rod, a pressing roller, and a pressing spring. The locking housing has pressing through holes on both sides. One end of the pressing rod is hinged to the inner wall of the door lock housing, and the other end of the pressing rod corresponds to the pressing through hole. The pressing roller is fixed to the free end of the pressing rod. One end of the pressing spring is fixed to the inner wall of the door lock housing, and the other end is fixed to the pressing rod.
[0018] In other embodiments, the telescopic assembly includes a motor, a push rack, and a gear set. The motor is fixed inside the door lock housing and meshes with the gear set. The push rack is movably disposed inside the door lock housing, with one end connected to the locking assembly, and the push rack meshes with the gear set.
[0019] This utility model also provides a dishwasher, including a chamber body, a chamber door, and a door lock device as described in any of the above, wherein the door lock housing is fixed to the chamber body, and the door bolt is fixed to the chamber door.
[0020] The beneficial effects of this utility model are as follows:
[0021] This invention includes a bolt, a lock housing, a bolt locking structure, and a bolt confirmation structure. The lock housing has a notch corresponding to the bolt. The bolt locking structure is located within the lock housing and locks the bolt at the notch. The bolt confirmation structure includes a trigger abutment block, a transmission assembly, and an actuating element. The trigger abutment block is slidably embedded in the bolt confirmation structure and has an abutment end that abuts against the bolt within the notch. The actuating element is fixed within the lock housing. One end of the transmission assembly is connected to the trigger abutment block, and the other end abuts against the actuating element, triggering the actuating element under the drive of the trigger abutment block. In this invention, when the bolt is locked at the notch by the bolt locking structure, it abuts against the trigger abutment block, driving the trigger abutment block to slide, which in turn moves the transmission assembly, triggering the actuating element and sending a signal. An external device can then confirm that the bolt and the bolt locking structure have locked based on this signal. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the door lock device in this utility model;
[0024] Figure 2 This is a schematic diagram of the internal structure of the door lock device in this utility model;
[0025] Figure 3 This is a schematic diagram of the internal structure of the locking housing in the door lock device of this utility model;
[0026] Figure 4 for Figure 3 Enlarged structural diagram of the middle wedge block;
[0027] Figure 5 for Figure 1 Schematic diagram of the middle bolt;
[0028] Wherein: 1-Door bolt, 11-Carrier plate, 12-Bolt body, 13-Top cover, 2-Door lock housing, 21-Notch,
[0029] 3-Door bolt locking structure, 31-Telescopic assembly, 311-Motor, 312-Push rack, 313-Gear set, 32-Locking assembly, 321-Locking housing, 321a-Locking notch, 321b-Screw, 321c-Pressure through hole, 322-Latch arm, 323-Pressure component, 323a-Pressure rod, 323b-Pressure roller, 323c-Pressure spring, 4-Door bolt confirmation structure, 41-Trigger abutment block, 42-Transmission assembly, 421-Push rod, 422-Wedge block, 423-Swing rod, 424-Spring, 43-Actuating element. Detailed Implementation
[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.
[0031] like Figure 1-5 As shown, an embodiment of this utility model provides a door lock device, which includes: a door bolt 1, a door lock housing 2, a door bolt locking structure 3, and a door bolt confirmation structure 4. The door lock housing 2 has a notch 21 corresponding to the door bolt 1. The door bolt locking structure 3 is disposed in the door lock housing 2 and is used to lock the door bolt 1 at the notch 21. The door bolt confirmation structure 4 includes a trigger abutment block 41, a transmission assembly 42, and an actuating element 43. The trigger abutment block 41 is slidably embedded in the door bolt locking structure 3 and has an abutment end that abuts against the door bolt 1 in the notch 21. The actuating element 43 is fixed in the door lock housing 2. One end of the transmission assembly 42 is connected to the trigger abutment block 41, and the other end abuts against the actuating element 43, and is used to trigger the actuating element 43 under the drive of the trigger abutment block 41.
[0032] In this invention, when the bolt 1 is locked at the notch 21 by the bolt locking structure 3, it abuts against the trigger abutment block 41, driving the trigger abutment block 41 to slide, thereby moving the transmission assembly 42, which in turn triggers the touch element 43 to send a signal. External devices can then confirm that the bolt 1 and the bolt locking structure 3 have been locked based on this signal.
[0033] Specifically, the bolt 1 includes a carrier plate 11 and a bolt body 12. The bolt body 12 is fixed to the carrier plate 11, and the bolt locking structure 3 can encircle the bolt body 12 from both sides to restrict the movement of the bolt body 12 relative to the lock housing 2. In use, the carrier plate 11 is fixed to one component, the lock housing 2 is fixed to another component, and the bolt locking structure 3 encircles the bolt body 12, locking the two components together. When the external tension on the bolt body 12 is greater than the locking tension between the bolt locking structures 3, the two components can separate relative to each other.
[0034] The plug body 12 can take various shapes. In some feasible embodiments, the plug body 12 is cuboid. In some feasible embodiments, the plug body 12 is triangular prism; while in this embodiment, the plug body 12 is spindle-shaped.
[0035] Furthermore, the bolt 1 also includes an upper cover 13, which covers the top of the bolt body 12, with the edge of the upper cover 13 protruding relative to the edge of the bolt body 12. This arrangement is intended to ensure that the protruding portion of the upper cover 13 relative to the bolt body 12 can press against the bolt locking structure 3 when the bolt locking structure 3 encircles the bolt body 12, thus preventing the bolt locking structure 3 from detaching from the bolt body 12.
[0036] Specifically, the door bolt locking structure 3 includes a telescopic component 31 and a locking component 32. The telescopic component 31 is disposed within the door lock housing 2 and has a telescopic end that can actively extend or retract relative to the notch 21. The locking component 32 is fixed to the telescopic end and is used to lock the door bolt 1. The telescopic component 31 can drive the locking component 32 to extend or retract relative to the notch 21. The purpose of setting the telescopic component 31 is to realize automatic opening and closing of the door gap. In use, the door bolt 1 is fixed to the door, and the door lock housing 2 is fixed to the compartment. When it is necessary to open the door, the telescopic component 31 extends, allowing the locking component 32 and the door bolt 1 locked with the locking component 32 to extend from the notch 21, forming a gap between the door and the compartment to facilitate heat dissipation from the compartment. When it is necessary to close the door gap, the telescopic component 31 retracts, allowing the locking component 32 and the door bolt 1 locked with the locking component 32 to retract into the notch 21, achieving a close fit between the door and the compartment.
[0037] Furthermore, the telescopic component 31 includes a motor 311, a push rack 312, and a gear set 313. The motor 311 is fixed inside the door lock housing 2 and meshes with the gear set 313. The push rack 312 is movably disposed inside the door lock housing 2, with one end connected to the locking component 32. The push rack 312 meshes with the gear set 313. The motor 311 drives the gear set 313 to rotate, thereby driving the push rack 312 to move relative to the door lock housing 2, achieving the technical effect of the push rack 312 extending or retracting relative to the notch 21.
[0038] In other feasible embodiments, the telescopic component 31 includes a telescopic cylinder, and the locking component 32 is fixed to the movable end of the telescopic cylinder. The movable end of the telescopic cylinder extends and retracts relative to the notch 21, thereby driving the locking component 32 to extend and retract.
[0039] Furthermore, the locking assembly 32 includes a locking housing 321, a limiting member (not shown), and two latch arms 322 capable of relative movement and encircling the bolt 1. The locking housing 321 is connected to the telescopic assembly 31. One end of each latch arm 322 is hinged to the locking housing 321. Both ends of the limiting member are connected to the other ends of the latch arms 322 to apply a force to the latch arms 322, restricting their opposite movement. When the latch arms 322 encircle the bolt 1, the limiting member restricts the opposite movement of the latch arms 322, thereby locking the bolt 1.
[0040] Furthermore, a cavity is formed inside the locking housing 321, and the limiting member and the latch arm 322 are disposed in the cavity. A locking notch 321a communicating with the cavity is provided at the end of the locking housing 321, and the end of the latch arm 322 is located at the locking notch 321a.
[0041] Furthermore, the limiting element is a spring, with its two ends fixed to the two latch arms 322 respectively, and the spring provides a force that resists the opposite movement of the latch arms 322.
[0042] Furthermore, one end of the latch arm 322 is hinged to the locking housing 321, and the other end of the latch arm 322 is a free end, bent into a shape that matches one side of the bolt body 12. The middle part of the latch arm 322 is connected to the limiting member.
[0043] Furthermore, a screw 321b protruding from the inner surface is fixed inside the locking housing 321, and an oblong hole is provided on the trigger abutment block 41. The screw 321b passes through the oblong hole, and the cooperation between the screw 321b and the oblong hole is used to limit the movement distance of the trigger abutment block 41.
[0044] In this embodiment, the locking assembly 32 further includes a pressing component 323. The locking housing 321 has pressing through holes 321c on both sides. The pressing component 323 extends into the locking housing 321 through the pressing through holes 321c and flexibly abuts against the latch arm 322 to prevent the latch arm 322 from moving in opposite directions.
[0045] Furthermore, the pressing component 323 includes a pressing rod 323a, a pressing roller 323b, and a pressing spring 323c. The locking housing 321 has pressing through holes 321c on both sides. One end of the pressing rod 323a is hinged to the inner wall of the door lock housing 2, and the other end of the pressing rod 323a corresponds to the pressing through hole 321c. The pressing roller 323b is fixed to the free end of the pressing rod 323a. One end of the pressing spring 323c is fixed to the inner wall of the door lock housing 2, and the other end is fixed to the pressing rod 323a. When the locking housing 321 is located inside the door lock housing 2, the pressing spring 323c applies a force to the pressing rod 323a to compress the latch arm 322, so that the latch arm 322 moves relative to the bolt body 12.
[0046] The advantage of setting the pressing component 323 is that, in the prior art, a relatively thick spring is often used to connect to the latch arm, and the tension on the latch arm is single and linear. However, in this application, three springs are used (one limiting member and two pressing springs 323c). When the locking housing 321 is located outside the door lock housing 2, only the limiting member acts on the latch arm 322, and the force is small, which makes it easy for the user to apply force to pull the bolt 12 out of the latch arm 322 (unlocking action) or push the bolt 12 between the latch arms 322 (locking action). When the locking housing 321 retracts into the door lock housing 2, the pressing springs 323c apply force to the latch arm 322 through the pressing rod 323a, and the latch arm 322 holds the bolt 12 tightly so that it does not come out.
[0047] Furthermore, the trigger abutment block 41 has a locking hole 411 at one end near the bolt 1, and a locking protrusion extending from the bolt 1 to match the locking hole 411. When the bolt 1 is fixed to the locking assembly 32, the bolt 1 and the trigger abutment block 41 are engaged through the engagement of the locking hole 411 and the locking protrusion. The bolt 1 pushes the trigger abutment block 41 toward the actuating element 43 and actuates the actuating element 43. When the bolt 1 is separated from the locking assembly 32, the bolt 1 drives the trigger abutment block 41 to move away from the actuating element 43, causing the trigger abutment block 41 to disengage from the actuating element 43. Finally, under the limitation of the screw 321b, the trigger abutment block 41 disengages from the bolt 1.
[0048] Specifically, the transmission assembly 42 includes a push rod 421, a wedge block 422, and a swing rod 423. One end of the push rod 421 is connected to the trigger abutment block 41, and the other end is fixed to the wedge block 422. The wedge block 422 is slidably disposed within the door lock housing 2. The swing rod 423 is translatably disposed within the door lock housing 2. The swing rod 423 abuts against the inclined surface of the wedge block 422, and the swing rod 423 extends to form a trigger portion for triggering the touch element 43. When the trigger abutment block 41 is abutted by the bolt 1, it moves along the moving direction of the bolt 1, thereby driving the push rod 421 to move along the moving direction of the bolt 1. The push rod 421 drives the wedge block 422 along the moving direction of the bolt 1, and the wedge block 422 pushes the swing rod 423 to translate perpendicular to the moving direction of the bolt 1, thereby abutting against the touch element 43 and triggering the touch element 43.
[0049] Furthermore, the transmission assembly 42 also includes a spring plate 424, which is fixed inside the door lock housing 2 and abuts against the wedge block 422, applying a force to the wedge block 422 to move the door bolt 1. The spring plate 424 is made of metal.
[0050] The transmission component 42 functions to transmit force in one direction, so that the force of the bolt 1 pushing the trigger abutment block 41 is transmitted to the touch element 43. On the other hand, it realizes the change of force direction, so that the force along the moving direction of the bolt 1 is switched to a force perpendicular to the moving direction of the bolt 1 through the wedge block 422 and the swing rod 423.
[0051] In use, when unlocking is required, when the motor 311 rotates forward, the gear set 313 rotates, pushing the push rack 312 to move relative to the lock housing 2 to the front stop point, pushing the locking housing 321 out of the notch 21 (by a distance of 9 cm). The pressing component 323 gradually disengages from the latch arm 322, and the force of the latch arm 322 encircling the bolt body 12 gradually decreases. The bolt body 12 also moves relative to the lock housing 2 under the action of the locking housing 321. When the locking housing 321 reaches its maximum extension distance, the pressing component 33 completely disengages from the latch arm 322. The latch arm 322 only encircles the bolt body 12 under the action of the limiting component. At this time, a gap is formed between the bolt body 12 and the lock housing 2, completing the unlocking action.
[0052] When locking is required, the motor 311 reverses, causing the gear set 313 to rotate, pushing the push rack 312 to move relative to the lock housing 2, pulling the locking housing 321 into the notch 21. The pressing member 323 gradually contacts the latch arm 322, and the force of the latch arm 322 encircling the bolt body 12 gradually increases. The bolt body 12 also moves relative to the lock housing 2 under the action of the locking housing 321. When the locking housing 321 is fully retracted into the lock housing 2, the pressing member 323 contacts the latch arm 322, and the latch arm 322 is restrained by the limiting member and the pressing member. Under the action of the compression spring 323c, the bolt body 12 is wrapped around the bolt body 12. At this time, the bolt body 12 is located inside the door lock housing 2, completing the locking action. During the process of the bolt 1 being pulled into the notch 21, it contacts the trigger abutment block 41 and pushes the trigger abutment block 41 to move. The trigger abutment block 41 drives the push rod 421 to move along the moving direction of the bolt 1. The push rod 421 drives the wedge block 422 to move along the moving direction of the bolt 1. The wedge block 422 pushes the swing rod 423 to translate in a direction perpendicular to the moving direction of the bolt 1, and then abuts against the trigger element 43, triggering the trigger element 43.
[0053] This utility model also provides a dishwasher, including a chamber body, a chamber door, and a door lock device as described in any of the above, wherein the door lock housing 2 is fixed to the chamber body, and the door bolt 1 is fixed to the chamber door.
[0054] The beneficial effects of this utility model are:
[0055] This invention includes a bolt, a lock housing, a bolt locking structure, and a bolt confirmation structure. The lock housing has a notch corresponding to the bolt. The bolt locking structure is located within the lock housing and locks the bolt at the notch. The bolt confirmation structure includes a trigger abutment block, a transmission assembly, and an actuating element. The trigger abutment block is slidably embedded in the bolt confirmation structure and has an abutment end that abuts against the bolt within the notch. The actuating element is fixed within the lock housing. One end of the transmission assembly is connected to the trigger abutment block, and the other end abuts against the actuating element, triggering the actuating element under the drive of the trigger abutment block. In this invention, when the bolt is locked at the notch by the bolt locking structure, it abuts against the trigger abutment block, driving the trigger abutment block to slide, which in turn moves the transmission assembly, triggering the actuating element and sending a signal. An external device can then confirm that the bolt and the bolt locking structure have locked based on this signal.
[0056] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model.
Claims
1. A door locking device, characterized by comprising: include: bolt; A door lock housing, wherein the door lock housing has a notch corresponding to the door bolt; A bolt locking structure, disposed within the door lock housing, is used to lock the bolt within the notch; and The bolt confirmation structure includes a trigger abutment block, a transmission assembly, and an actuating element. The trigger abutment block has an abutment end that abuts against the bolt in the notch. The actuating element is fixed inside the door lock housing. One end of the transmission assembly is connected to the trigger abutment block, and the other end abuts against the actuating element, for triggering the actuating element under the drive of the trigger abutment block.
2. The door latch apparatus of claim 1 wherein, The trigger abutment block has an engagement hole at one end near the bolt, and an engagement protrusion extends from the bolt to match the engagement hole.
3. The door latch apparatus of claim 1 wherein, The transmission assembly includes a push rod, a wedge block, and a swing rod. One end of the push rod is connected to the trigger abutment block, and the other end is fixed to the wedge block. The wedge block is slidably disposed within the door lock housing. The swing rod is translatably disposed within the door lock housing. The swing rod abuts against the inclined surface of the wedge block, and the swing rod extends to form a trigger portion for triggering the touch element.
4. The door latch apparatus of claim 1 wherein, The bolt locking structure includes a telescopic component and a locking component. The telescopic component is disposed inside the door lock housing and has a telescopic end that can actively extend or retract relative to the notch. The locking component is fixed on the telescopic end and is used to lock the bolt. The telescopic component can drive the locking component to extend or retract relative to the notch.
5. The door latch arrangement of claim 4, wherein The locking assembly includes a locking housing, a limiting member, and two latch arms that can move relative to each other and encircle the bolt. The locking housing is connected to the telescopic assembly, one end of each latch arm is hinged to the locking housing, and both ends of the limiting member are respectively connected to the other ends of the latch arms to apply a force to the latch arms to restrict their opposite movement.
6. The door latch arrangement of claim 5, wherein A screw protruding from the inner surface is fixed inside the locking housing. A waist-shaped hole is opened on the trigger abutment block. The screw passes through the waist-shaped hole. The cooperation between the screw and the waist-shaped hole is used to limit the movement distance of the trigger abutment block.
7. The door latch apparatus of claim 5 wherein, The locking assembly also includes a pressing component. The locking housing has pressing through holes on both sides. The pressing component extends into the locking housing through the pressing through holes and flexibly abuts against the latch arm to prevent the latch arm from moving in opposite directions.
8. The door latch arrangement of claim 7, wherein The pressing component includes a pressing rod, a pressing roller, and a pressing spring. Pressing through holes are respectively opened on both sides of the locking housing. One end of the pressing rod is hinged to the inner wall of the door lock housing, and the other end of the pressing rod corresponds to the pressing through hole. The pressing roller is fixed on the free end of the pressing rod. One end of the pressing spring is fixed to the inner wall of the door lock housing, and the other end is fixed to the pressing rod.
9. The door latch apparatus of claim 4 wherein, The telescopic component includes a motor, a push rack, and a gear set. The motor is fixed inside the door lock housing and meshes with the gear set. The push rack is movably disposed inside the door lock housing, and one end is connected to the locking component. The push rack meshes with the gear set.
10. A dishwasher, characterized in that The door lock device as claimed in any one of claims 1 to 9, wherein the door lock housing is fixed to the bin body, and the door bolt is fixed to the bin door.