CN218668883U

CN218668883U - Spring lock capable of automatically resetting

Info

Publication number: CN218668883U
Application number: CN202222573454.0U
Authority: CN
Inventors: 刘敏
Original assignee: Marquardt Electronic Technology Shanghai Co ltd
Current assignee: Marquardt Electronic Technology Shanghai Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-03-21
Anticipated expiration: 2032-09-28

Abstract

The utility model provides a but automatic re-setting's spring lock needs to ally oneself with executor push rod subassembly, a serial communication port, include: one end of the mounting shaft is fixedly connected with the first reset spring part, and the other end of the mounting shaft is fixedly connected with the mounting pin; the bolt assembly is penetrated by the mounting shaft so as to be capable of rotating along the axial direction of the mounting shaft under the action of the push rod; the mounting seat is provided with a first mounting groove for accommodating the lock tongue assembly, and a second mounting groove for accommodating a sensing device is further arranged on the mounting seat; and when the spring bolt assembly rotates to a critical position, the spring bolt assembly is disconnected with the push rod and can trigger the sensing device to send a signal to feed back the push rod and the spring lock to enter a disconnected state. The utility model discloses can solve current lock because of the lock income power is bigger than normal, can't realize needing the push rod and can realize easily being connected and difficult off-going function with the door or the drawer of electrical apparatus.

Description

Spring lock capable of automatically resetting

Technical Field

The utility model relates to a spring technical field, in particular to but automatic re-setting's spring lock.

Background

In an automatic opening and closing system of a door or a drawer of an intelligent household appliance, such as a dish washer, a refrigerator, a washing machine, a disinfection cabinet and other appliances, a push rod and the door or the drawer are required to realize the functions of easy connection (small locking force) and difficult disconnection (large disconnection force), so that the door or the drawer is prevented from being disconnected due to accidental collision or cannot be driven to move due to early disconnection, and the final door closing state is achieved.

At present, the door lock on the market is not suitable for a novel intelligent household appliance applying an actuator push rod assembly due to large locking force, and the door or the drawer cannot be pulled back to a final door closing state after being pushed open.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a but spring lock of automatic re-setting can solve current lock because of the lock income power is big partially, can't realize needing the push rod and can realize easily being connected with the function that is difficult for throwing off with the door or the drawer of electrical apparatus.

In order to solve the technical problem, the utility model provides a but spring lock of automatic re-setting needs to ally oneself with executor push rod assembly and uses, a serial communication port, include: one end of the mounting shaft is fixedly connected with the first reset spring part, and the other end of the mounting shaft is fixedly connected with the mounting pin; the bolt assembly is penetrated by the mounting shaft so as to be capable of rotating along the axial direction of the mounting shaft under the action of the push rod; the mounting seat is provided with a first mounting groove for accommodating the lock tongue assembly, and a second mounting groove for accommodating a sensing device is further arranged on the mounting seat; and when the spring bolt assembly rotates to a critical position, the spring bolt assembly is disconnected with the push rod and can trigger the sensing device to send a signal to feed back the push rod and the spring lock to enter a disconnected state.

Specifically, a first through hole and a second through hole are respectively formed in two corresponding walls in the first mounting groove, and the mounting shaft penetrates through the first through hole and the second through hole.

The installation axle runs through first through hole earlier first spring bolt component the second through hole, again by first spring part that resets with the installation round pin overlaps respectively establishes and runs through the both ends of installation axle, last first spring part that resets with the installation round pin quilt respectively first through hole the second through hole holds on two corresponding outer walls of first mounting groove.

Specifically, the first mounting groove is further provided with a clamping step for limiting the rotation range of the bolt assembly.

Specifically, the spring bolt subassembly includes axial cavity spring bolt and establishes second spring part that resets on the spring bolt, second spring part that resets supports screens step department.

Specifically, the spring bolt is a double-hook spring bolt, and two straight line grooves are further formed in the double-hook spring bolt.

Specifically, the second spring part that resets is two torsional springs, two straight line ends of two torsional springs insert two respectively the straight line groove, two spiral sections of two torsional springs screens respectively in the double hook spring bolt, the U type section of two torsional springs then supports screens step department.

Specifically, the first return spring member is a coil spring, and the end of the coil spring is an extended L-shaped extension.

Specifically, the first through hole is further connected with a fan-shaped groove on the outer wall to accommodate the movement of the extension section so as to limit the rotation range of the first return spring member.

Specifically, the second return spring member is coaxially disposed with the first return spring member.

Specifically, the second return spring part can provide a torque force for counterclockwise rotation to rotate the latch bolt assembly to the critical position, and the first return spring part can provide a torque force for clockwise rotation to rotate the latch bolt assembly back to the initial position.

In particular, the sensing device is a switch sensor.

Through the utility model discloses a lock of spring lock is gone into and is deviate from, can guarantee that the lock income is done all can and deviate from the power greatly for a short time, solves current lock because of the lock income is done all can greatly partially, can't realize needing push rod and electric appliance's door or drawer to realize easily being connected and difficult off-going function. And whether the push rod is separated from the lock tongue or not can be judged through the sensing device, and a foundation is laid for realizing high-grade control of household appliances.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required for the present invention are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an exploded view of the present invention;

fig. 2 is an exploded view of the latch bolt assembly of the present invention;

FIG. 3 is a schematic view of a viewing angle after installation of the present invention;

fig. 4 is a schematic view of the present invention in a locked state.

Description of the symbols

1. Lock tongue

2. Mounting seat

3. Mounting shaft

4. First reset spring part

41. Extension section

5. Sensing device

6. Mounting pin

7. Second reset spring part

71. Straight line end

72. Helical segment

73 U-shaped section

8. Lock tongue assembly

9. First mounting groove

10. Second mounting groove

11. The first through hole

12. Second through hole

13. Clamping step

20. Push rod

21. Limiting groove

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-2, the present invention provides an automatic resettable spring lock, which is used in combination with an actuator push rod assembly, comprising: a mounting shaft 3, one end of which is fixedly connected with the first return spring part 4 and the other end of which is fixedly connected with the mounting pin 6; a latch bolt assembly 8 penetrated by the mounting shaft 3 so as to be rotatable in the axial direction of the mounting shaft 3 by a push rod 20; a first mounting groove 9 is formed to accommodate the latch bolt assembly 8, and a second mounting groove 10 is formed to accommodate the mounting seat 2 of the sensing device 5; when the latch bolt assembly 8 rotates to the critical position, the latch bolt assembly 8 is triggered and sends a signal after being disconnected with the push rod 00. The sensing means 5 is a switch sensor. The corresponding two walls in the first mounting groove 9 are also respectively provided with a first through hole 11 and a second through hole 12 for the mounting shaft 3 to pass through. The first mounting groove 9 is further provided with a catching step 13 to limit a rotation range of the latch bolt assembly 8. The bolt assembly 8 comprises an axial hollow bolt 1 and a second reset spring part 7 arranged on the bolt 1, and the second reset spring part 7 abuts against the clamping step 13. The bolt 1 is a double-hook bolt, the bolt of the bolt 1 is an inclined bolt with radian, and the inclined bolt is also provided with a linear groove. The second reset spring member 7 is formed by connecting two spiral sections 72 through a U-shaped section 73 extending downwards and two symmetrical linear ends 71 and spiral sections 72, the two linear ends 71 are respectively inserted into the linear grooves, the two spiral sections 72 are respectively clamped in the double-hook bolt, and the U-shaped section 73 abuts against the clamping step 13. The first return spring element 4 has a hollow discoid shape and an L-shaped extension 41 extending from the discoid shape. The first through hole 11 also has a scalloped groove in the outer wall to accommodate movement of the extension 41 to limit the range of rotation of the first return spring member 4. Second spring part 7 and the coaxial setting of first spring part 4 that resets, second spring part 7 that resets can provide anticlockwise rotation's torsion and rotate spring bolt assembly 8 to critical position, and first spring part 4 that resets can provide clockwise rotation's torsion and rotate spring bolt assembly 8 back initial position. However, the torque force in the forward direction and the reverse direction is different, the disengaging force provided by the second return spring part 7 is large, and the locking force provided by the first return spring part 4 is small.

During the installation, installation axle 3 runs through first through-hole 11, spring bolt subassembly 8, second through-hole 12 earlier in proper order, is established and runs through the both ends of installation axle 3 by first spring part 4 and the installation round pin 6 cover respectively again, and first spring part 4 that resets and installation round pin 6 are held on two corresponding outer walls of first mounting groove 9 by first through-hole 11, second through-hole 12 respectively at last (refer to fig. 3).

Example 2

At door or drawer closed state, when installing at intelligent household electrical appliances box one side executor push rod subassembly and receiving the order of opening the door, executor push rod subassembly slowly stretches out push rod 20, and bolt assembly 8 is anticlockwise rotation under the effect of push rod 20, and when push rod 20 stretched out to specific position 1 (this position depends on executor push rod subassembly), bolt 1 clockwise rotation under the effect of first spring part 4 that resets returns initial position, push rod 20 and spring lock entering connected state, lock the state promptly. The locked state means that the bolt 1 completely enters the limit groove 21 of the push rod 20. When the push rod 20 just contacts the latch bolt assembly 8, the relative position between the latch bolt assembly 8 and the push rod 20 needs a certain displacement, so that the latch bolt assembly 8 can be reset under the action of the first reset spring part 4 and enter the limit groove 21 of the push rod 20 (refer to fig. 4).

When the push rod 20 and the bolt 1 enter the locked state, the push rod 20 continuously extends out to drive the spring lock to move simultaneously, and the spring lock is fixed on the door or the drawer, so that the door or the drawer also moves along with the extension of the push rod, and finally the aim of opening the door or the drawer to a specified position by the push rod is fulfilled.

Example 3

In door or drawer open mode, when installing at intelligent household electrical appliances box one side executor push rod subassembly and receiving the command of closing the door, executor push rod subassembly slowly withdraws push rod 20, the second spring part that resets 7 torsion of anticlockwise rotation that produces after the rotation of very little angle is greater than the sum of the resistance that other parts produced at the in-process of closing the door, like door self gravity, door hinge rotation friction power etc. for push rod 20 and latch keep locking the state, push rod 20 drives the latch and removes, and the push rod drives door or drawer and removes promptly, finally reaches the closed condition. (very small angle of rotation means that the latch bolt assembly 8 remains in the retaining groove 21 after rotation and cannot be disengaged in advance before the door reaches the closed position.)

When the door or the drawer reaches a closed state, the actuating assembly continues to withdraw the push rod 20, at this time, the door or the drawer cannot move, the latch bolt assembly 8 rotates clockwise under the pulling force of the push rod 20, when the push rod 20 is withdrawn to a specific position 2 (which depends on the push rod assembly of the actuator), the push rod 20 and the latch enter a disconnected state, namely a disconnected state, at this time, the sensing device 5 in the latch is triggered, and a signal that the push rod 20 and the latch are disconnected is fed back to the main control device.

Example 4

For an intelligent household appliance with an automatic door opening function, in the case of embodiment 3, a signal fed back by the sensing device 5 in the latch lock can be simultaneously used as a signal that the door is opened and fed back to the main control device, the main control device immediately locks or stops some working programs which may harm a user or a use environment, such as a microwave function of a microwave oven, a washing function of a dishwasher, a washing function or a dewatering function of a washing machine, and the like, and the main control device can also send out a warning sound to remind the user that the current program is interrupted.

Example 5

For the intelligent dishwasher with the automatic door opening and drying function, when the push rod 20 of the actuator push rod assembly is completely extended and is in a waiting state, namely the dishwasher is in an air circulation state at the end of a drying process, when a user wants to stop the process, the user can open the door by applying a large pulling force to the door or the drawer, the sensing device 5 in the spring lock is triggered at the moment, and feeds back a signal that the push rod 20 and the spring lock are disconnected to the main control device, the main control device can make a withdrawing instruction for the actuator push rod assembly, the situation that the push rod is directly exposed in an operation area of the user and forms a potential safety hazard to the user is avoided, and the main control device can also send out a warning sound to remind the user that the drying program is interrupted.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An automatically resettable latch for use with an actuator push rod assembly, comprising:

one end of the mounting shaft is fixedly connected with the first reset spring part, and the other end of the mounting shaft is fixedly connected with the mounting pin;

the bolt assembly is penetrated by the mounting shaft so as to be capable of rotating along the axial direction of the mounting shaft under the action of the push rod;

the mounting seat is provided with a first mounting groove for accommodating the lock tongue assembly, and a second mounting groove for accommodating a sensing device is further arranged on the mounting seat;

and when the spring bolt assembly rotates to a critical position, the spring bolt assembly is disconnected with the push rod and can trigger the sensing device to send a signal to feed back the push rod and the spring lock to enter a disconnected state.

2. A latch according to claim 1, wherein the first mounting groove has a first through hole and a second through hole on two corresponding walls for the mounting shaft to pass through.

3. A latch lock according to claim 2, wherein the mounting shaft passes through the first through hole, the latch bolt assembly and the second through hole in sequence, the first return spring member and the mounting pin are sleeved on and pass through two ends of the mounting shaft, and finally the first return spring member and the mounting pin are received on two corresponding outer walls of the first mounting groove by the first through hole and the second through hole.

4. A latch lock according to claim 1, wherein the first mounting slot is further provided with a detent step to limit the range of rotation of the bolt assembly.

5. A spring lock according to claim 4, characterized in that the bolt assembly comprises an axially hollow bolt and a second return spring element provided on the bolt, which second return spring element abuts against the detent step.

6. A latch as defined in claim 5, wherein the bolt is a double hook bolt, and wherein two linear slots are provided in the double hook bolt.

7. A spring lock according to claim 6, characterized in that the second return spring element is a double torsion spring, the two straight ends of which are inserted into the two straight grooves, respectively, the two spiral sections of which are locked in the double hook bolt, respectively, and the U-shaped section of which abuts against the locking step.

8. A latch lock according to claim 3, wherein said first return spring member is a coil spring terminating in an extended L-shaped extension.

9. A latch lock according to claim 8, wherein said first through opening further includes a scalloped groove in said outer wall to accommodate movement of said extension to limit the range of rotation of said first return spring member.

10. A spring lock according to claim 5, wherein the second return spring member is arranged coaxially with the first return spring member.

11. The latch lock of claim 10 wherein said second return spring member is adapted to provide a counterclockwise rotational torque to rotate said bolt assembly to the threshold position and said first return spring member is adapted to provide a clockwise rotational torque to rotate said bolt assembly back to the initial position.

12. A latch as defined in claim 1, wherein the sensing means is a switch sensor.