High-stability door lock device
By combining a long slider, a cam, and a spring, the structure of the electromagnetic door lock is simplified, the stability problem caused by multiple sliders is solved, and a door lock device with high stability and low failure rate is achieved.
Patent Information
- Application Number
- CN202520492882.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Existing electromagnetic door lock devices are prone to malfunction due to the complex coordination of multiple sliders and components, resulting in poor door lock stability, especially when the washing machine door rotates at an off-center angle and easily gets stuck.
The door lock structure is simplified by using a combination of a long slider, cam, push rod and spring. The locking and unlocking of the door lock is achieved by the curved surface movement of the cam and the long slider, reducing the complexity of the parts.
It improves the stability and reliability of door locks, reduces the failure rate, simplifies the installation and maintenance process, and has low friction and high stability.
Smart Images
Figure CN223866992U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electrical equipment door lock technology, specifically relating to a highly stable door lock device. Background Technology
[0002] Electrical appliances such as washing machines typically use electromagnetic door locks to open and close their doors. Electromagnetic door lock devices usually use a long slider and a cam to open and close the door. Patent CN 18441952 A discloses a door lock device with door opening sensing, including a housing, a door lock seat fixedly connected to the upper end of the housing, a first slider and a pin slidably connected inside the door lock seat, a second spring between the first slider and the door lock seat, a door sensing protrusion, a drive stop block and a power-off protrusion fixedly connected to both sides of the first slider, a door lock hook rotatably connected inside the door lock seat, and a lock hole corresponding to the door lock hook on the surface of the door lock seat, with the pin engaging with the door lock hook; a coil assembly, a first conductive insert, a second conductive insert and a third conductive insert are installed inside the housing. This invention integrates door sensing function, accidental locking, and power-off function into the first slider body, but requires the cooperation of three springs (first spring, second spring and third spring) with the first slider and second slider to realize the relevant functions of opening and closing the door, resulting in a complex structure. Failures are prone to occur when different structures are combined, especially when the rotation angle of the washing machine door is different. Due to the angle deviation, the position of the door hook changes, which in turn causes the position of the first slider to deviate, posing a risk of jamming the second slider and reducing the stability of the door lock opening and closing. Therefore, there is a need to develop a door lock device that is not prone to failure when the door lock is switched on and off, and maintains high stability. Utility Model Content
[0003] To address the existing technical problems, this utility model provides a highly stable door lock device. Through the cooperation of a long slider, cam, push rod, and spring, the door lock can be locked and unlocked, avoiding the cumbersome operation of multiple sliders and multiple components, reducing the failure rate, and achieving high stability.
[0004] The technical solution of this utility model is as follows: a highly stable door lock device, comprising a base, a cam seat, a long slider, a spring, a cam, a torsion spring, a door pin, and an electric control box; the long slider is slidably installed in the base, the cam seat is installed at the front of the base, the cam is rotatably installed on the cam seat via a camshaft, the electric control box is installed at the rear of the base, the long slider is disposed between the electric control box and the base, the upper part of the door pin is movably connected to the electric control box, and the lower part of the door pin is movably connected to the long slider; a spring is disposed between the rear end of the long slider and the base, the front end of the long slider is movably connected to the cam, and the cam is connected to the cam seat via a torsion spring; there are two springs in total, evenly distributed along the left and right directions of the long slider.
[0005] Furthermore, the long slider includes a slider body, spring mounting posts, a locking hole for the latch, and a push rod groove. The left side of the slider body extends forward to form an L-shaped structure. A limiting groove is provided at the middle position of the rear part of the slider body. The limiting groove is engaged with the base. Two spring mounting posts are fixed at the rear end of the slider body and are provided on the left and right sides of the limiting groove. A locking hole for the latch is provided at the left end of the rear part of the slider body. The locking hole for the latch is adapted to the latch. A push rod groove is provided at the right end of the slider body. The push rod groove is movably connected to the push rod of the electrical control box. The top of the push rod in the electrical control box is movably connected to the conductive sheet. The conductive sheet is engaged in the latch.
[0006] Furthermore, the push rod groove has a structure that is higher at the front and lower at the back.
[0007] Furthermore, a guide portion is provided at the front end of the slider body, and the guide portion has an arc-shaped structure; the cam includes a U-shaped opening groove, a camshaft mounting hole, a torsion spring mounting hole, and a sliding connection portion. The camshaft mounting hole is located between the U-shaped opening groove and the torsion spring mounting hole. A sliding connection portion is provided at the rear end of the lower part of the U-shaped opening groove. The sliding connection portion has an arc-shaped structure. The sliding connection portion is movably connected to the guide portion. The camshaft is installed in the camshaft mounting hole, and one end of the torsion spring is installed in the torsion spring mounting hole.
[0008] Furthermore, the groove on the side of the sliding connection adjacent to the guide is deeper, while the groove on the side away from the guide is shallower.
[0009] When the high-stability door lock device of this utility model is in operation, when the door hook is inserted into the lock body, the front end of the door hook is inserted into the U-shaped opening groove of the cam, which drives the cam to rotate clockwise. The sliding connection part releases the guide part, and the long slider moves forward under the elastic force of the spring. The push rod moves to the rear of the push rod slide groove, and the push rod moves down. The conductive plate moves down and contacts the coil of the electric control box, so that the coil is in a energized state. The door pin locking hole moves to the bottom of the door pin. Under the action of the electric control box, the door pin moves down and passes through the door pin locking hole to lock the long slider, thereby realizing the locking of the door lock. When the door hook is pulled out of the lock body, it drives the cam to rotate counterclockwise. The sliding connection part presses against the guide part, causing the long slider to move backward. The push rod moves to the front of the push rod groove, and the push rod moves upward. The conductive plate lifts up and disengages from the coil of the control box, so that the coil is in a de-energized state. The door pin returns to its original position and moves above the door pin locking hole. The door pin locking hole moves with the long slider to the rear of the door pin, and the door pin cannot move down, thus unlocking the door lock.
[0010] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:
[0011] (1) This utility model achieves locking and unlocking of the door lock by using the cooperation of a long slider, cam, push rod and spring. Only one long slider is needed to cooperate with other structures, avoiding the cumbersome cooperation of multiple sliders and multiple parts, reducing the failure rate and improving the stability of unlocking and locking of the door lock.
[0012] (2) The long slider is moved back and forth by two springs, the thrust is balanced, the reliability is high and the installation is easy.
[0013] (3) The long slider has a simple structure, high strength, and is easy to mold making and maintenance.
[0014] (4) The present invention uses the sliding connection part of the cam and the guide part of the long slider to perform curved surface matching motion, which has low friction, high stability, and is convenient to adjust the stroke range of the door hook. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 3 This is a top view of the present invention;
[0018] Figure 4 This is a schematic diagram of the cam structure of this utility model;
[0019] Figure 5 This is a schematic diagram of the structure of the long slider of this utility model;
[0020] Figure 6 This is a schematic diagram of the structure of the cam and the long slider of this utility model.
[0021] In the diagram, 1 is the base; 2 is the cam seat; 3 is the long slider; 4 is the spring; 5 is the cam; 6 is the locking pin; 7 is the electrical control box; 8 is the camshaft; 9 is the torsion spring; 31 is the slider body; 32 is the spring mounting post; 33 is the locking pin hole; 34 is the push rod groove; 35 is the limiting groove; 36 is the guide part; 51 is the U-shaped opening groove; 52 is the camshaft mounting hole; 53 is the torsion spring mounting hole; 54 is the sliding connection part; 71 is the push rod; 72 is the conductive sheet. Detailed Implementation
[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Example
[0023] Reference Figure 1-6A highly stable door lock device includes a base 1, a cam seat 2, a long slider 3, a spring 4, a cam 5, a door pin 6, and an electric control box 7. The long slider 3 is slidably installed in the base 1, the cam seat 2 is installed at the front of the base 1, the cam 5 is rotatably installed on the cam seat 2 via a camshaft 8, the electric control box 7 is installed at the rear of the base 1, the long slider 3 is disposed between the electric control box 7 and the base 1, the upper part of the door pin 6 is movably connected to the electric control box 7, and the lower part of the door pin 6 is movably connected to the long slider 3. A spring 4 is disposed between the rear end of the long slider 3 and the base 1, and the front end of the long slider 3 is movably connected to the cam 5. The cam 5 is connected to the cam seat 2 via a torsion spring 9. There are two springs 4 in total, evenly distributed along the left and right directions of the long slider 3.
[0024] The control box 7 controls the movement of the door pin 6 by the energization of the coil (this is prior art), and the spring 4 drives the long slider 3 to move forward. When the door hook is inserted into the lock body, the cam 5 rotates around the cam shaft 8, releasing the long slider 3, which then moves forward under the force of the spring 4; when the door hook is not inserted into the lock body, the cam 5 limits the front of the long slider 3 to prevent it from moving.
[0025] Furthermore, the long slider 3 includes a slider body 31, a spring mounting post 32, a locking hole 33, and a push rod groove 34. The left side of the slider body 31 extends forward to form an L-shaped structure. A limiting groove 35 is provided at the middle position of the rear part of the slider body 31. The limiting groove 35 is engaged with the base 1. The spring mounting post 32 is fixed at the rear end of the slider body 31. There are two spring mounting posts 32, which are provided on the left and right sides of the limiting groove 35. A locking hole 33 is provided at the left rear end of the slider body 31. The locking hole 33 is adapted to the locking pin 6. A push rod groove 34 is provided at the right end of the slider body 31. The push rod groove 34 is movably connected to the push rod 71 of the electrical control box 7. The top of the push rod 71 in the electrical control box 7 is movably connected to the conductive sheet 72. The conductive sheet 72 is engaged in the locking pin 6. When the latch 6 moves downward, its bottom passes through the latch locking hole 33, locking the long slider 3 and preventing it from moving. When the latch 6 moves upward, its bottom moves above the latch locking hole 33, no longer locking the long slider 3, allowing it to move back and forth. The limiting groove 35 limits the long slider 3 while ensuring its back-and-forth movement.
[0026] Furthermore, the push rod groove 34 has a structure that is higher at the front and lower at the back. When the long slider 3 moves forward, the push rod 71 moves to the rear of the push rod groove 34. At this time, the push rod 71 moves downward, causing the conductive plate 72 to move downward and contact the coil of the control box 7, so that the coil is in an energized state. When the long slider 3 moves backward, the push rod 71 moves to the front of the push rod groove 34. At this time, the push rod 71 moves upward, causing the conductive plate 72 to lift upward and disengage from the coil of the control box 7, so that the coil is in an unenergized state.
[0027] When the door pin 6 moves up and down, it drives the conductive sheet 72 to move up and down, thereby realizing the disconnection or connection between the conductive sheet 72 and the push rod 71.
[0028] Furthermore, the front end of the slider body 31 is provided with a guide part 36, which has an arc-shaped structure; the cam 5 includes a U-shaped opening groove 51, a camshaft mounting hole 52, a torsion spring mounting hole 53, and a sliding connection part 54. The camshaft mounting hole 52 is located between the U-shaped opening groove 51 and the torsion spring mounting hole 53. The rear end of the lower part of the U-shaped opening groove 51 is provided with a sliding connection part 54, which has an arc-shaped structure. The sliding connection part 54 is movably connected to the guide part 36. The camshaft 8 is installed in the camshaft mounting hole 52, and one end of the torsion spring 9 is installed in the torsion spring mounting hole 53.
[0029] When the door hook is inserted into the lock body, its front end enters the U-shaped opening slot 51. As the door hook moves forward, its front end exerts a force on the upper part of the U-shaped opening slot 51, causing the cam 5 to rotate clockwise around the cam shaft 8. At this time, the lower part of the U-shaped opening slot 51 is inserted into the through hole of the door hook, and the cam 5 maintains its position under the force of the torsion spring 9. When the door hook is pulled out of the lock body, it moves downward, exerting a force on the lower part of the U-shaped opening slot 51, causing the cam 5 to rotate counterclockwise around the cam shaft 8 to return to its original position. The cam 5 maintains its position under the force of the torsion spring 9. At this time, the door hook can be smoothly removed from the U-shaped opening slot 51.
[0030] When the door hook is pulled out of the lock body and the cam 5 rotates counterclockwise, the sliding connection part 54 presses against the guide part 36 of the long slider 3, causing the long slider 3 to move backward; when the door hook is inserted into the lock body and the cam 5 rotates clockwise, the sliding connection part 54 no longer limits the guide part 36 of the long slider 3, and the long slider 3 can move back and forth.
[0031] The sliding connection 54 and the guide 36 move in an arc-shaped curved surface manner, which results in low friction, high stability, and easy adjustment of the hook's stroke range.
[0032] Furthermore, the groove on the side of the sliding connection 54 adjacent to the guide 36 is deeper, while the groove on the side farther from the guide 36 is shallower. This structural arrangement of the sliding connection 54 facilitates the coordinated movement of the cam 5 and the long slider 3.
[0033] When the high-stability door lock device of this utility model is working, when the door hook is inserted into the lock body, the front end of the door hook is inserted into the U-shaped opening groove 51 of the cam 5, which drives the cam 5 to rotate clockwise. The sliding connection part 54 releases the guide part 36, and the long slider 3 moves forward under the elastic force of the spring 4. The push rod 71 moves to the rear of the push rod groove 34, and the push rod 71 moves down. The conductive sheet 72 moves down and contacts the coil of the electric control box 7, so that the coil is in the energized state. The door pin locking hole 33 moves to the bottom of the door pin 6. Under the action of the electric control box 7, the door pin 6 moves down and passes through the door pin locking hole 33 to lock the long slider 3, thereby realizing the locking of the door lock. When the door hook is pulled out of the lock body, it drives the cam 5 to rotate counterclockwise. The sliding connection part 54 presses the guide part 36, causing the long slider 3 to move backward. The push rod 71 moves to the front of the push rod groove 34. The push rod 71 moves upward, and the conductive piece 72 lifts up and disengages from the coil of the control box 7, so that the coil 7 is in a de-energized state. The door pin 6 returns to its original position and moves above the door pin locking hole 33. The door pin locking hole 33 moves with the long slider 3 to the rear of the door pin 6, and the door pin 6 cannot move down, thereby unlocking the door lock.
Claims
1. A highly stable door lock device, characterized in that: The system includes a base (1), a cam seat (2), a long slider (3), a spring (4), a cam (5), a door pin (6), and an electrical control box (7). The long slider (3) is slidably installed in the base (1), the cam seat (2) is installed at the front of the base (1), the cam (5) is rotatably installed on the cam seat (2) via a camshaft (8), the electrical control box (7) is installed at the rear of the base (1), the long slider (3) is located between the electrical control box (7) and the base (1), the upper part of the door pin (6) is movably connected to the electrical control box (7), and the lower part of the door pin (6) is movably connected to the long slider (3). A spring (4) is installed between the rear end of the long slider (3) and the base (1), and the front end of the long slider (3) is movably connected to the cam (5). The cam (5) is connected to the cam seat (2) via a torsion spring (9). There are two springs (4) in total, which are evenly arranged along the left and right directions of the long slider (3).
2. The highly stable door lock device according to claim 1, characterized in that: The long slider (3) includes a slider body (31), a spring mounting post (32), a door pin locking hole (33), and a top rod groove (34). The left side of the slider body (31) extends forward to form an L-shaped structure. A limiting groove (35) is provided at the middle position of the rear part of the slider body (31). The limiting groove (35) is engaged with the base (1). The spring mounting post (32) is fixed at the rear end of the slider body (31). There are two spring mounting posts (32). On the left and right sides of the limiting groove (35), a door pin locking hole (33) is provided at the rear left end of the slider body (31), and the door pin locking hole (33) is adapted to the door pin (6); a top rod slide groove (34) is provided at the right end of the slider body (31), and the top rod slide groove (34) is movably connected to the top rod (71) of the electric control box (7). The top of the top rod (71) in the electric control box (7) is movably connected to the conductive sheet (72), and the conductive sheet (72) is snapped into the door pin (6).
3. The highly stable door lock device according to claim 2, characterized in that: The push rod groove (34) has a structure that is higher in the front and lower in the back.
4. The highly stable door lock device according to claim 2, characterized in that: The front end of the slider body (31) is provided with a guide part (36), which is an arc-shaped structure; the cam (5) includes a U-shaped opening groove (51), a camshaft mounting hole (52), a torsion spring mounting hole (53) and a sliding connection part (54). The camshaft mounting hole (52) is located between the U-shaped opening groove (51) and the torsion spring mounting hole (53). The rear end of the lower part of the U-shaped opening groove (51) is provided with a sliding connection part (54), which is an arc-shaped structure. The sliding connection part (54) is movably connected to the guide part (36). The camshaft (8) is installed in the camshaft mounting hole (52), and one end of the torsion spring (9) is installed in the torsion spring mounting hole (53).
5. A highly stable door lock device according to claim 4, characterized in that: The groove on the side of the sliding connection (54) adjacent to the guide (36) is deeper, and the groove on the side away from the guide (36) is shallower.