Automatic switch locking device

Abstract

The utility model provides an automatic opening and closing locking device which comprises a bolt, a door lock shell, a telescopic assembly and a locking assembly, a notch is formed in the door lock shell, the telescopic assembly is arranged in the locking shell and provided with a telescopic end capable of stretching out or retracting back relative to the notch, and the locking assembly is arranged on the door lock shell. The locking assembly comprises a locking shell, a limiting piece and two latch arms capable of moving relatively, the locking shell is connected with the telescopic end, one end of each latch arm is hinged to the locking shell, and the two ends of the limiting piece are connected with the other ends of the latch arms respectively so as to limit the latch arms to move oppositely; when unlocking is needed, the telescopic assembly pushes the locking assembly to stretch out of the door lock shell, the bolt is driven by the locking assembly to move relative to the door lock shell, unlocking is achieved, when locking is needed, the bolt is manually pushed to be clamped into the locking assembly located outside the door lock shell at the moment, and the telescopic assembly pulls the locking assembly and the bolt to retract into the door lock shell. Therefore, the locking action is completed.

Description

Technical Field

[0001] This utility model relates to the field of household appliances, and in particular to an automatic switch and lock device. 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 CN201310356336.7 provides a dishwasher including a body having a cleaning chamber accessible through an inlet, a door mounted on the body for locking the inlet, wherein the door is defined on its side facing the cleaning chamber by an inner wall, the inner wall providing a sealing contact surface for a sealing structure mounted on the body, a latch having a latch head fixedly mounted on the door relative to the door and a locking unit disposed on the body, the locking unit having two latch arms capable of moving in opposite directions, the latch arms holding the latch head on both sides when the door is closed, wherein the latch head abuts against the latch arms when the door is closed and pushes the latch arms away from a relatively stationary state against elastic force, wherein the latch head protrudes from the surface profile of the inner wall of the door, the latch arms including free arm ends, the free arm ends abutting against the latch head and being pushed away when the door is closed, the body including an end wall, a body cover plate suspended above the end wall and the locking unit mounted behind the end wall, the free arm ends extending from the end wall through a recess in the end wall, the recess opening toward the bottom of the body.

[0004] The door lock device of the aforementioned dishwasher has the following problem: the latch head can only be pushed relative to the latch arm by external force, so it cannot achieve automatic unlocking and locking. Utility Model Content

[0005] In view of this, it is necessary to provide an automatic locking and unlocking device that can automatically unlock and lock.

[0006] This utility model provides an automatic opening and closing locking device, including: a door bolt,

[0007] A door lock housing, wherein a notch is provided on the door lock housing;

[0008] The telescopic assembly is disposed within the locking housing and has a telescopic end capable of extending or retracting relative to the notch; and

[0009] A 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 end, 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.

[0010] Optionally, 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.

[0011] Optionally, one end of the rack is hinged to the locking housing, and there is a rotational clearance between the locking housing and the rack, so that the locking housing can rotate to tilt relative to the horizontal plane.

[0012] Optionally, it also includes a pair of latch arm pressing components, which are disposed inside the door lock housing. The locking housing has pressing through holes on both sides. When the locking housing is located inside the door lock housing, the latch arm pressing components partially extend into the pressing through holes to press against the latch arm.

[0013] Optionally, the latch arm pressing assembly includes a pressing rod, a pressing roller, and a pressing spring. 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. When the locking housing is located inside the door lock housing, the pressing spring applies a force to the pressing rod to compress the latch arm, so that the latch arm moves relative to the bolt body.

[0014] Optionally, the bolt includes a carrier plate and a bolt body, the bolt body being fixed to the carrier plate, and the latch arm being able to encircle the bolt body from both sides to restrict the movement of the bolt body relative to the door lock housing.

[0015] Optionally, the bolt may further include a top cover, which is disposed on top of the bolt body and the edge of the top cover protrudes relative to the edge of the bolt body.

[0016] Optionally, the locking part further includes a triggering component and an electric switch. The electric switch is used to detect the state of the bolt assembly and the latch arm. The triggering component is movably disposed within the housing and can actuate the electric switch when the latch body is in the locked position.

[0017] Optionally, the triggering component includes a trigger rod and a trigger member. The trigger rod is movably disposed within the door lock housing, and the other end is fixed to the trigger rod. One end of the trigger rod has an abutment end that abuts against the bolt body. The trigger member is pivotally connected to the door lock housing. One end of the trigger member is hinged to the trigger rod, and the other end is a free end.

[0018] Optionally, a hinge end is formed on one end of the rack near the locking housing, which is hinged to the locking housing, and the end of the rack extends to form an abutment end that can abut against the bottom of the locking housing, wherein the thickness between the hinge end and the abutment end is greater than the thickness of the locking housing.

[0019] The beneficial effects of this utility model are as follows:

[0020] This invention includes a bolt, a lock housing, a telescopic assembly, and a locking assembly. The lock housing has a notch. The telescopic assembly is located within the locking housing and has a telescopic end that can extend or retract relative to the notch. The locking assembly includes a locking housing, a limiting member, and two bolt arms that can move relative to each other. The locking housing is connected to the telescopic end, one end of each bolt arm is hinged to the locking housing, and both ends of the limiting member are connected to the other ends of the bolt arms to restrict their opposite movement. When unlocking is required, the telescopic assembly pushes the locking assembly out of the lock housing, and the bolt moves relative to the lock housing under the action of the locking assembly, thus unlocking. When locking is required, the bolt is manually pushed into the locking assembly, which is currently outside the lock housing. The telescopic assembly then pulls the locking assembly and the bolt back into the lock housing, thus completing the locking action. This invention can automatically complete the unlocking and locking actions, providing a better user experience. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a schematic diagram of the automatic switch and lock device in this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the automatic switch and lock device in this utility model;

[0024] Figure 3 This is a schematic diagram of the automatic switch locking device in another embodiment of the present invention when it is locked;

[0025] Figure 4 This is a schematic diagram of the automatic switch locking device in another embodiment of the present invention when it is unlocked;

[0026] Figure 5 This is a schematic diagram of the internal structure of the automatic switch locking device when it is locked in another embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of the automatic switch locking device when it is unlocked in another embodiment of the present invention;

[0028] Figure 7 for Figure 3 Schematic diagram of the middle bolt;

[0029] Figure 8 This is a schematic diagram of the assembly structure of the triggering component and the electric switch in another embodiment;

[0030] Wherein: 1-Door bolt, 11-Carrier plate, 12-Bolt body, 13-Top cover, 2-Door lock housing, 21-Notch, 3-Telescopic assembly, 31-Motor, 31a-Gear motor, 32-Push rack, 32a-Rack, 321-Hinged end, 322-Abutting end, 33-Gear set, 33a-Gear, 4-Locking assembly, 41-Locking housing, 411-Locking notch, 412-Abutting through hole, 42-Restricting component, 43-Latch arm, 5-Latch arm abutting assembly, 51-Abutting rod, 52-Abutting roller, 53-Abutting spring, 6-Triggering component, 61-Triggering rod, 62-Triggering component, 7-Electric switch. Detailed Implementation

[0031] 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.

[0032] like Figure 1-8 As shown, an embodiment of this utility model provides an automatic switching and locking device, which includes: a bolt 1, a lock housing 2, a telescopic assembly 3, and a locking assembly 4. The lock housing 2 has a notch 21. The telescopic assembly 3 is disposed in the locking housing 2 and has a telescopic end that can extend or retract relative to the notch. The locking assembly 4 includes a locking housing 41, a limiting member 42, and two latch arms 43 that can move relative to each other and encircle the bolt 1. The locking housing 41 is connected to the telescopic end. One end of the latch arm 43 is hinged to the locking housing 41. The two ends of the limiting member 42 are respectively connected to the other ends of the latch arm 43 to apply a force to the latch arm 43 to restrict its opposite movement.

[0033] In this utility model, a bolt 1, a lock housing 2, a telescopic assembly 3, and a locking assembly 4 are provided. The lock housing 2 has a notch 21. The telescopic assembly 3 is disposed within the locking housing 2 and has a telescopic end that can extend or retract relative to the notch. The locking assembly 4 includes a locking housing 41, a restraining member 42, and two latch arms 43 that can move relative to each other. The locking housing 41 is connected to the telescopic end, one end of each latch arm 43 is hinged to the locking housing 41, and the two ends of the restraining member 42 are respectively... The latch arm 43 is connected to the other end to restrict its opposite movement. When unlocking is required, the telescopic component 3 pushes the locking component 4 out of the lock housing 2, and the bolt 1 moves relative to the lock housing 2 under the action of the locking component 4, thus unlocking. When locking is required, the bolt 1 is manually pushed into the locking component 4, which is now outside the lock housing 2. The telescopic component 3 then pulls the locking component 4 and the bolt 1 back into the lock housing 2, thereby completing the locking action. This invention can automatically complete the unlocking and locking actions, providing a better user experience.

[0034] 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 latch arms 43 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 latch arms 43 encircle the bolt body 12 to lock the two components. When the external tension on the bolt body 12 is greater than the locking tension between the latch arms 43, the two components can be separated relative to each other.

[0035] 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.

[0036] Furthermore, the bolt 1 also includes an upper cover 13, which is disposed on 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 down on the latch arm 43 when the latch arm 43 encircles the bolt body 12, preventing the latch arm 43 from detaching from the bolt body 12.

[0037] Specifically, the telescopic component 3 only needs to be able to push the locking component 4 to move relative to the door lock housing 2. In some other feasible embodiments, the telescopic component 3 includes a telescopic cylinder, the telescopic end of which is connected to the locking component 4, and the telescopic end of the telescopic cylinder can extend or retract the locking component 4 relative to the notch 21.

[0038] In this embodiment, such as Figure 2 As shown, the telescopic component 3 includes a motor 31, a push rack 32, and a gear set 33. The motor 31 is fixed inside the door lock housing 2 and meshes with the gear set 33. The push rack 32 is movably disposed inside the door lock housing 2, with one end connected to the locking component 4, and meshes with the gear set 33. The motor 31 drives the gear set 33 to rotate, thereby causing the push rack 32 to move relative to the door lock housing 2, achieving the technical effect of the push rack 32 extending or retracting relative to the notch 21.

[0039] In some other feasible embodiments, such as Figure 5-6 As shown, the telescopic component 3 includes a reduction motor 31a, a rack 32a, and a gear 33a. The reduction motor 31a is fixed inside the door lock housing 2, and the gear 33a is fixed to the rotating end of the reduction motor 31a. The rack 32a is movably embedded inside the door lock housing 2, with one end connected to the locking housing 41. The rack 32a meshes with the gear 33a. When the reduction motor 31a rotates forward, the gear 33a rotates, pushing the rack 32a to move relative to the door lock housing 2, thus pushing the locking housing 41 out of the notch 21. When the reduction motor 31a rotates in reverse, the gear 33a rotates, pushing the rack 32a to move relative to the door lock housing 2, thus pulling the locking housing 41 into the notch 21.

[0040] Furthermore, one end of the rack 32a is hinged to the locking housing 41, and there is a rotational clearance between the locking housing 41 and the rack 32a, so that the locking housing 41 can rotate to tilt relative to the horizontal plane. The purpose of this design is that the movement trajectory of the bolt 12 is arc-shaped, and the locking housing 41, after extending out of the notch 21, tilts at an angle under the action of gravity, which can match the movement trajectory of the bolt 12, facilitating the engagement of the locking assembly 4 with the bolt 12.

[0041] Furthermore, a hinge end 321 is formed on one end of the rack 32a near the locking housing 41, which is hinged to the locking housing 41. The end of the rack 32a extends to form an abutment end 322 that can abut against the bottom of the locking housing 41. The thickness between the hinge end 321 and the abutment end 322 is greater than the thickness of the locking housing 41. When the locking housing 41 extends out of the notch 21, under the action of gravity, the locking housing 41 rotates relative to the hinge end 321 until it abuts against the abutment end 322. At this time, the locking housing 41 is inclined relative to the horizontal plane, which can match the movement trajectory of the bolt 12, facilitating the engagement of the locking assembly 4 with the bolt 12.

[0042] Furthermore, a cavity is formed inside the locking housing 41, and the limiting member 42 and the latch arm 43 are disposed in the cavity. A locking notch 411 communicating with the cavity is provided at the end of the locking housing 41, and the end of the latch arm 43 is located at the locking notch 411.

[0043] Furthermore, the limiting member 42 is a spring, with its two ends fixed to the latch arm 43 respectively, and the spring provides a force that resists the opposite movement of the latch arm 43.

[0044] Furthermore, one end of the latch arm 43 is hinged to the inside of the locking housing 41, and the other end of the latch arm 43 is a free end, bent into a shape that matches one side of the bolt body 12. The middle part of the latch arm 43 is connected to the limiting member 42.

[0045] Specifically, it also includes a pair of latch arm pressing components 5, which are disposed inside the door lock housing 2. The locking housing 41 has pressing through holes 412 on both sides. When the locking housing 41 is located inside the door lock housing 2, the latch arm pressing components 5 partially extend into the pressing through holes 412 and press against the latch arm 43.

[0046] Furthermore, the latch arm pressing assembly 5 includes a pressing rod 51, a pressing roller 52, and a pressing spring 53. One end of the pressing rod 51 is hinged to the inner wall of the door lock housing 2, and the other end of the pressing rod 51 corresponds to the pressing through hole 412. The pressing roller 52 is fixed on the free end of the pressing rod 51. One end of the pressing spring 53 is fixed to the inner wall of the door lock housing 2, and the other end is fixed to the pressing rod 51. When the locking housing 41 is located inside the door lock housing 2, the pressing spring 53 applies a force to the pressing rod 51 to compress the latch arm 43, so that the latch arm 43 moves relative to the bolt body 12.

[0047] The advantage of the latch arm pressing assembly 5 is that, in the prior art, a relatively thick spring is often used to connect 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 42 and two pressing springs 53). When the locking housing 41 is located outside the door lock housing 2, only the limiting member 42 acts on the latch arm 43, 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 43 (unlocking action) or push the bolt 12 between the latch arms 43 (locking action). When the locking housing 41 retracts into the door lock housing 2, the pressing springs 53 apply force to the latch arm 43 through the pressing rod 51, and the latch arm 43 holds the bolt 12 tightly so that it does not come out.

[0048] Specifically, it also includes a triggering component 6 and an electric switch 7. The electric switch 7 is used to detect the state of the bolt 1 and the locking component 4. The triggering component 6 is movably disposed within the door lock housing 2. The triggering component 6 can actuate the electric switch 7 when the bolt 12 is within the door lock housing 2.

[0049] Furthermore, a button is provided on the surface of the electric switch 7, the bolt body 12 is located inside the door lock housing 2, and the triggering component 6 can press the button to trigger the electric switch 7.

[0050] Furthermore, the triggering component 6 includes a trigger rod 61, a trigger spring, and a trigger element 62. The trigger rod 61 is movably disposed within the door lock housing 2. One end of the trigger spring is fixed to the inner wall of the housing 24, and the other end is fixed to the trigger rod 61. The trigger spring allows the trigger rod 61 to be elastically connected to the door lock housing 2. One end of the trigger rod 61 has an abutting end that abuts against the bolt 12. The trigger element 62 is pivotally connected to the door lock housing 2. One end of the trigger element 62 is hinged to the trigger rod 61, and the other end is a free end. When the bolt 11 abuts against the trigger rod 61, it pushes the trigger rod 61 to move, thereby causing the trigger element 62 to rotate relative to the door lock housing 2, causing the trigger element 62 to disengage from the button on the surface of the electric switch 7, thus triggering the electric switch 7.

[0051] In use, when unlocking is required, when the motor 31 rotates forward, the gear set 33 rotates, pushing the push rack 32 to move relative to the door lock housing 2 to the front stop point, pushing the locking housing 41 out of the notch 21 (a distance of 9 cm). The latch arm pressing component 5 gradually disengages from the latch arm 43, and the force of the latch arm 43 encircling the bolt body 12 gradually decreases. The bolt body 12 also moves relative to the door lock housing 2 under the action of the locking housing 41. When the locking housing 41 reaches its maximum extension distance, the latch arm pressing component 5 completely disengages from the latch arm 43. The latch arm 43 only encircles the bolt body 12 under the action of the limiting member 42. At this time, a gap is formed between the bolt body 12 and the door lock housing 2, completing the unlocking action.

[0052] When locking is required, the motor 31 reverses, causing the gear set 33 to rotate and push the push rack 32 to move relative to the lock housing 2, pulling the locking housing 41 into the notch 21. The latch arm pressing assembly 5 gradually contacts the latch arm 43, and the force of the latch arm 43 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 41. When the locking housing 41 is completely retracted into the lock housing 2, the latch arm pressing assembly 5 contacts the latch arm 43. Under the action of the limiting member 42 and the pressing spring 53, the latch arm 43 encircles the bolt body 12. At this time, the bolt body 12 is located inside the lock housing 2, completing the locking action.

[0053] The beneficial effects of this utility model are:

[0054] This invention includes a bolt, a lock housing, a telescopic assembly, and a locking assembly. The lock housing has a notch. The telescopic assembly is located within the locking housing and has a telescopic end that can extend or retract relative to the notch. The locking assembly includes a locking housing, a limiting member, and two bolt arms that can move relative to each other. The locking housing is connected to the telescopic end, one end of each bolt arm is hinged to the locking housing, and both ends of the limiting member are connected to the other ends of the bolt arms to restrict their opposite movement. When unlocking is required, the telescopic assembly pushes the locking assembly out of the lock housing, and the bolt moves relative to the lock housing under the action of the locking assembly, thus unlocking. When locking is required, the bolt is manually pushed into the locking assembly, which is currently outside the lock housing. The telescopic assembly then pulls the locking assembly and the bolt back into the lock housing, thus completing the locking action. This invention can automatically complete the unlocking and locking actions, providing a better user experience.

[0055] 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. An automatic switching and locking device, characterized in that, include: bolt, A door lock housing, wherein a notch is provided on the door lock housing; A telescopic assembly is disposed within the door lock housing and has a telescopic end capable of extending or retracting relative to the notch; as well as A 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 end, 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.

2. The automatic switching and locking device as described in claim 1, characterized in that, 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.

3. The automatic switching and locking device as described in claim 2, characterized in that, One end of the rack is hinged to the locking housing, and there is a rotational clearance between the locking housing and the rack so that the locking housing can rotate to tilt relative to the horizontal plane.

4. The automatic switching and locking device as described in claim 2, characterized in that, It also includes a pair of latch arm pressing components, which are disposed inside the door lock housing. The locking housing has pressing through holes on both sides. When the locking housing is located inside the door lock housing, the latch arm pressing components partially extend into the pressing through holes to press against the latch arm.

5. The automatic switching and locking device as described in claim 4, characterized in that, The latch arm pressing assembly includes a pressing rod, a pressing roller, and a pressing spring. 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. When the locking housing is located inside the door lock housing, the pressing spring applies a force to the pressing rod to compress the latch arm, so that the latch arm moves relative to the door bolt and hugs it.

6. The automatic switching and locking device as described in claim 2, characterized in that, The bolt includes a carrier plate and a bolt body. The bolt body is fixed to the carrier plate, and the latch arm can wrap around the bolt body from both sides to restrict the movement of the bolt body relative to the door lock housing.

7. The automatic switching and locking device as described in claim 6, characterized in that, The bolt also includes an upper cover, which is disposed on top of the bolt body and the edge of the upper cover protrudes relative to the edge of the bolt body.

8. The automatic switching and locking device as described in claim 6, characterized in that, It also includes a triggering component and an electric switch, the electric switch being used to detect the state of the bolt assembly and the latch arm, the triggering component being movably disposed within the housing, the triggering component being able to actuate the electric switch when the bolt body is in the locked position.

9. The automatic switching and locking device as described in claim 8, characterized in that, The triggering component includes a trigger rod and a trigger member. The trigger rod is movably disposed within the door lock housing, and the other end is fixed to the trigger rod. One end of the trigger rod has an abutment end that abuts against the bolt body. The trigger member is pivotally connected to the door lock housing. One end of the trigger member is hinged to the trigger rod, and the other end is a free end.

10. The automatic switching and locking device as described in claim 3, characterized in that, A hinge end is formed on one end of the rack near the locking housing, and is hinged to the locking housing. The end of the rack extends to form an abutment end that can abut against the bottom of the locking housing. The thickness between the hinge end and the abutment end is greater than the thickness of the locking housing.

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