Automatic switch locking device

Abstract

The invention provides an automatic switch 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, and 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. 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] The invention relates to the field of household appliances, and in particular to an automatic switch locking device. Background Art

[0002] Some household appliances usually have an appliance body, such as a dishwasher, in which a product treatment chamber is formed. A door is mounted on the appliance body so as to be pivotable about a horizontal axis; the door serves to close an access opening to the product treatment chamber. During operation of the household appliance, the door should be securely locked so that the product being treated in the product treatment chamber does not escape from the machine and possibly endanger people standing nearby. Therefore, a locking device is usually provided in order to be able to keep the door closed.

[0003] For example, patent CN201310356336.7 provides a dishwasher, comprising a main body, having a washing chamber accessible through an entrance, a door, which is mounted on the main body and used to lock the entrance, wherein the door is defined by a door inner wall on the door side facing the washing chamber, the door inner wall provides a sealing abutment surface for a sealing structure mounted on the main body, a door latch, having a latch head fixedly mounted on the door relative to the door and a locking unit arranged on the main body, the locking unit having two latch arms that can move toward each other, the latch arms holding the latch head on both sides when the door is closed, wherein the latch head collides with the latch arm when the door is closed and the latch arm is squeezed open from a relatively static state against elastic force, wherein the latch head rises from the surface contour of the door inner wall, the latch arm comprises a free arm end, the free arm end collides with the latch head and is squeezed open when the door is closed, the main body comprises an end wall, a main body cover plate is suspended above the end wall and the locking unit is mounted behind the end wall, the free arm end protrudes from the end wall through a recess in the end wall, and the recess is open toward the bottom of the main body.

[0004] The door lock device of the above dishwasher has the following problem: the latch head can only be pushed by external force to move relative to the latch arm, so it is impossible to achieve automatic unlocking and locking actions. Summary of the invention

[0005] In view of this, it is necessary to provide an automatic switch locking device that can realize automatic unlocking and locking actions.

[0006] The present invention provides an automatic switch locking device, comprising: a door bolt, A door lock housing, wherein a notch is formed on the door lock housing; Telescopic assembly: The telescopic assembly is disposed in the locking housing and has a telescopic end that can extend or retract relative to the notch; and A locking assembly, comprising a locking shell, a limiting member and two latch arms capable of relative movement and embracing the door bolt, wherein the locking shell is connected to the telescopic end, one end of the latch arm is hinged to the locking shell, and both ends of the limiting member are respectively connected to the other end of the latch arm to apply a force to the latch arm to limit its opposite movement.

[0007] Optionally, the telescopic assembly includes a motor, a pushing rack and a gear set, the motor is fixed in the door lock housing, the motor is meshed with the gear set, the pushing rack is movably arranged in the door lock housing and one end is connected to the locking assembly, and the pushing rack is meshed with the gear set.

[0008] Optionally, one end of the rack is hinged to the locking shell, and a rotation gap is provided between the locking shell and the rack so that the locking shell can be rotated to be inclined relative to a horizontal plane.

[0009] Optionally, it also includes a pair of latch arm pressing assemblies, which are arranged in the door lock shell, and pressing through holes are respectively opened on both sides of the lock shell. When the lock shell is located in the door lock shell, the latch arm pressing assembly partially extends into the pressing through hole to press the latch arm.

[0010] 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 shell, 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 shell, and the other end is fixed to the pressing rod, when the locking shell is located in the door lock shell, the pressing spring applies a force to the pressing rod to squeeze the latch arm, so that the latch arm moves relatively to embrace the bolt body.

[0011] Optionally, the door bolt includes a carrier plate and a bolt body, the bolt body is fixed on the carrier plate, and the latch arm can embrace the bolt body from two sides to limit the movement of the bolt body relative to the door lock housing.

[0012] Optionally, the door bolt further includes an upper cover, which is disposed on the top of the bolt body and an edge of the upper cover protrudes relative to an edge of the bolt body.

[0013] Optionally, the locking portion further includes a trigger component and an electric switch, wherein the electric switch is used to detect the status of the bolt assembly and the latch arm, and the trigger component is movably disposed in the housing, and the trigger component can actuate the electric switch when the latch body is in a locked position.

[0014] Optionally, the trigger component includes a trigger rod and a trigger member, the trigger rod is movably arranged in the door lock housing, and the other end is fixed to the trigger rod, one end of the trigger rod has an abutting end abutting 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.

[0015] Optionally, a hinged end is formed on one end of the rack close to the locking shell and is hinged to the locking shell. The end of the rack extends to form an abutment end that can abut against the bottom of the locking shell, and the thickness between the hinged end and the abutment end is greater than the thickness of the locking shell.

[0016] The beneficial effects of the present invention are: In the present invention, a door bolt, a door lock housing, a telescopic component and a locking component are provided, the door lock housing is provided with a notch, the telescopic component is provided in the locking housing, and has a telescopic end that can extend or retract relative to the notch, the locking component includes a locking housing, a limiting member and two latch arms that can move relative to each other, the locking housing is connected to the telescopic end, one end of the latch arm is hinged to the locking housing, and the two ends of the limiting member are respectively connected to the other end of the latch arm to limit the back movement of the latch arms; when it is necessary to unlock, the telescopic component pushes the locking component to extend out of the door lock housing, and the door bolt moves relative to the door lock housing under the drive of the locking component to achieve unlocking, and when it is necessary to lock, the door bolt is pushed by manpower to be stuck in the locking component located outside the door lock housing at this time, and the telescopic component pulls the locking component and the door bolt retracts into the door lock housing, thereby completing the locking action. The scheme of the present invention can automatically complete the unlocking and locking actions to provide a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of the automatic switch locking device in the present invention; Figure 2 It is a schematic diagram of the internal structure of the automatic switch locking device in the present invention; Figure 3 It is a structural schematic diagram of an automatic switch locking device in another embodiment of the present invention when locked; Figure 4 It is a structural schematic diagram of an automatic switch locking device in another embodiment of the present invention when unlocking; Figure 5 A schematic diagram of the internal structure of an automatic switch locking device when locked in another embodiment of the present invention; Figure 6 A schematic diagram of the internal structure of an automatic switch locking device when unlocked in another embodiment of the present invention; Figure 7 for Figure 3 Schematic diagram of the structure of the middle door bolt; Figure 8 It is a schematic diagram of the assembly structure of the trigger component and the electric switch in another embodiment; Wherein: 1-bolt, 11-carrier plate, 12-bolt body, 13-upper cover, 2-door lock housing, 21-notch, 3-telescopic assembly, 31-motor, 31a-reduction motor, 32-pushing rack, 32a-rack, 321-hinge end, 322-abutment end, 33-gear set, 33a-gear, 4-locking assembly, 41-locking housing, 411-locking notch, 412-pressing through hole, 42-limiting member, 43-latch arm, 5-latch arm pressing assembly, 51-pressing rod, 52-pressing roller, 53-pressing spring, 6-trigger component, 61-trigger rod, 62-trigger member, 7-electric switch. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings 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 used to limit the scope of the present invention.

[0020] like Figure 1-8 As shown, an embodiment of the present invention provides an automatic switch locking device, which includes: a door bolt 1, a door lock shell 2, a telescopic component 3 and a locking component 4, wherein the door lock shell 2 is provided with a notch 21, the telescopic component 3 is arranged in the locking shell 2, and has a telescopic end which can extend or retract relative to the notch, the locking component 4 includes a locking shell 41, a limiting member 42 and two latch arms 43 which can move relative to each other and embrace the door bolt 1, the locking shell 41 is connected to the telescopic end, one end of the latch arm 43 is hinged to the locking shell 41, and the two ends of the limiting member 42 are respectively connected to the other end of the latch arm 43 to apply a force to the latch arm 43 to limit its opposite movement.

[0021] In the present invention, a door bolt 1, a door lock housing 2, a telescopic assembly 3 and a locking assembly 4 are provided. The door lock housing 2 is provided with a notch 21. The telescopic assembly 3 is provided 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. The locking housing 41 is connected to the telescopic end, one end of the latch arm 43 is hinged to the locking housing 41, and the two ends of the limiting member 42 are respectively connected to the locking housing 41. The other end of the latch arm 43 is connected to limit the opposite movement of the latch arm 43; when unlocking is required, the telescopic component 3 pushes the locking component 4 out of the door lock housing 2, and the bolt 1 moves relative to the door lock housing 2 under the drive of the locking component 4 to achieve unlocking; when locking is required, the bolt 1 is pushed by manpower to be inserted into the locking component 4 located outside the door lock housing 2, and the telescopic component 3 pulls the locking component 4 and the bolt 1 back into the door lock housing 2, thereby completing the locking action. The solution of the present invention can automatically complete the unlocking and locking actions to provide a better user experience.

[0022] Specifically, the bolt 1 includes a carrier plate 11 and a bolt body 12, wherein the bolt body 12 is fixed to the carrier plate 11, and the latch arm 43 can embrace the bolt body 12 from both sides to limit the bolt body 12 from moving relative to the door lock housing 2. When in use, the carrier plate 11 is fixed to one component, and the door lock housing 2 is fixed to another component, and the latch arm 43 embraces the bolt body 12 to lock the two components. When the external pulling force on the bolt body 12 is greater than the locking pulling force between the latch arms 43, the two components can be relatively separated.

[0023] The plug body 12 may be in various shapes. In some feasible embodiments, the plug body 12 is in a rectangular parallelepiped shape. In some feasible embodiments, the plug body 12 is in a triangular column shape. In this embodiment, the plug body 12 is in a spindle column shape.

[0024] Furthermore, the door bolt 1 further comprises an upper cover 13, which is disposed on the top of the bolt body 12 and the edge of the upper cover 13 protrudes relative to the edge of the bolt body 12. The purpose of such a configuration is that the portion of the upper cover 13 protruding relative to the bolt body 12 can press the latch arm 43 when the latch arm 43 embraces the bolt body 12, thereby preventing the latch arm 43 from being separated from the bolt body 12.

[0025] Specifically, the telescopic assembly 3 only needs to be able to push the locking assembly 4 to move relative to the door lock housing 2. In some other feasible embodiments, the telescopic assembly 3 includes a telescopic cylinder, the telescopic end of the telescopic cylinder is connected to the locking assembly 4, and the telescopic end of the telescopic cylinder can drive the locking assembly 4 to extend or retract relative to the notch 21.

[0026] In this embodiment, if Figure 2 As shown, the telescopic assembly 3 includes a motor 31, a push rack 32 and a gear set 33. The motor 31 is fixed in the door lock housing 2, and the motor 31 is meshed with the gear set 33. The push rack 32 is movably arranged in the door lock housing 2, and one end is connected to the locking assembly 4, and the push rack 32 is meshed with the gear set 33. The motor 31 drives the gear set 33 to rotate, and then drives the push rack 32 to move relative to the door lock housing 2, so as to achieve the technical effect that the push rack 32 extends or retracts relative to the notch 21.

[0027] In some other possible embodiments, such as Figure 5-6 As shown, the telescopic assembly 3 includes a reduction motor 31a, a rack 32a, and a gear 33a. The reduction motor 31a is fixed in the door lock housing 2, and the gear 33a is fixed on the rotating end of the reduction motor 31a. The rack 32a is movably embedded in the door lock housing 2, and one end of the rack 32a is connected to the lock housing 41, and the rack 32a is meshed 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, and pushing the lock housing 41 out of the notch 21; when the reduction motor 31a rotates reversely, the gear 33a rotates, pushing the rack 32a to move relative to the door lock housing 2, and pulling the lock housing 41 into the notch 21.

[0028] Furthermore, one end of the rack 32a is hinged to the locking housing 41, and there is a rotation gap between the locking housing 41 and the rack 32a, so that the locking housing 41 can be rotated to be inclined relative to the horizontal plane. The purpose of this design is that the movement trajectory of the bolt body 12 is arc-shaped, and the locking housing 41 is inclined at an angle under the action of gravity after extending out of the notch 21, which can match the movement trajectory of the bolt body 12, so that the locking assembly 4 is easy to be combined with the bolt body 12.

[0029] Furthermore, a hinged end 321 is formed on one end of the rack 32a close to the locking housing 41, and is hinged to the locking housing 41. The end of the rack 32a extends to form an abutting end 322 that can abut against the bottom of the locking housing 41. The thickness between the hinged end 321 and the abutting 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 hinged end 321 until it abuts against the abutting 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 body 12, so as to facilitate the combination of the locking assembly 4 and the bolt body 12.

[0030] Furthermore, a cavity is formed in the locking shell 41 , the limiting member 42 and the latch arm 43 are arranged in the cavity, a locking notch 411 communicating with the cavity is opened at the end of the locking shell 41 , and the end of the latch arm 43 is located at the locking notch 411 .

[0031] Furthermore, the limiting member 42 is a spring, both ends of which are respectively fixed to the latch arms 43 , and the spring provides a force to prevent the latch arms 43 from moving away from each other.

[0032] Furthermore, one end of the latch arm 43 is hinged inside the locking housing 41 , and the other end of the latch arm 43 is a free end bent into a shape matching one side of the bolt body 12 , and the middle of the latch arm 43 is connected to the limiting member 42 .

[0033] Specifically, it also includes a pair of latch arm pressing assemblies 5, which are arranged in the door lock shell 2, and pressing through holes 412 are respectively opened on both sides of the locking shell 41. When the locking shell 41 is located in the door lock shell 2, the latch arm pressing assembly 5 partially extends into the pressing through hole 412 to press the latch arm 43.

[0034] 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 shell 2, and the other end of the pressing rod 51 corresponds to the pressing through hole 412, the pressing roller 52 is fixed to 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 shell 2, and the other end is fixed to the pressing rod 51, when the locking shell 41 is located in the door lock shell 2, the pressing spring 53 applies a force to the pressing rod 51 to squeeze the latch arm 43, so that the latch arm 43 moves relatively and embraces the bolt body 12.

[0035] The advantage of the latch arm pressing assembly 5 is that, in the prior art, a thicker spring is often used to connect the latch arm, and the tension on the latch arm is single and linear, while in the present application, three springs (a limiting member 42 and two pressing springs 53) are used. When the locking shell 41 is located outside the door lock shell 2, only the limiting member 42 acts on the latch arm 43, and the force is small, which is convenient for the user to apply force to pull the bolt body 12 out of the latch arm 43 (unlocking action) or push the bolt body 12 between the latch arms 43 (locking action). When the locking shell 41 retracts into the door lock shell 2, the pressing spring 53 applies force to the latch arm 43 through the pressing rod 51, and the latch arm 43 holds the bolt body 12 tightly to prevent it from falling out.

[0036] Specifically, it also includes a trigger component 6 and an electric switch 7. The electric switch 7 is used to detect the status of the door bolt 1 and the locking assembly 4. The trigger component 6 is movably arranged in the door lock housing 2. The trigger component 6 can actuate the electric switch 7 when the bolt body 12 is in the door lock housing 2.

[0037] Furthermore, a button is provided on the surface of the electric switch 7 , the bolt body 12 is located in the door lock housing 2 , and the trigger component 6 can press the button to trigger the electric switch 7 .

[0038] Furthermore, the trigger component 6 includes a trigger rod 61, a trigger spring, and a trigger member 62. The trigger rod 61 is movably arranged in 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 body 12. The trigger member 62 is pivotally connected to the door lock housing 2. One end of the trigger member 62 is hinged to the trigger rod 61, and the other end is a free end. When the bolt body 11 abuts against the trigger rod 61, the trigger rod 61 is pushed to move, thereby causing the trigger member 62 to rotate relative to the door lock housing 2, so that the trigger member 62 is out of contact with the button on the surface of the electric switch 7 to trigger the electric switch 7.

[0039] When 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, pushing the lock housing 41 out of the notch 21, and the latch arm pressing assembly 5 gradually disengages from the latch arm 43, and the force of the latch arm 43 surrounding the bolt body 12 gradually decreases. The bolt body 12 also moves relative to the door lock housing 2 under the drive of the lock housing 41. When the lock housing 41 reaches its maximum extended distance, the latch arm pressing assembly 5 completely disengages from the latch arm 43, and the latch arm 43 only surrounds 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; When the lock needs to be closed, the motor 31 reverses, the gear set 33 rotates, and pushes the push rack 32 to move relative to the door lock housing 2, and pulls the locking housing 41 into the notch 21, and the latch arm pressing assembly 5 gradually contacts the latch arm 43, and the force of the latch arm 43 surrounding the bolt body 12 gradually increases. The bolt body 12 also moves relative to the door lock housing 2 under the drive of the locking housing 41. When the locking housing 41 is completely retracted into the door lock housing 2, the latch arm pressing assembly 5 contacts the latch arm 43, and the latch arm 43 surrounds the bolt body 12 under the action of the limiting member 42 and the pressing spring 53. At this time, the bolt body 12 is located in the door lock housing 2, and the locking action is completed.

[0040] The beneficial effects of the present invention are: In the present invention, a door bolt, a door lock housing, a telescopic component and a locking component are provided, a notch is provided on the door lock housing, the telescopic component is provided in the locking housing, and has a telescopic end that can extend or retract relative to the notch, the locking component includes a locking housing, a limiting member and two latch arms that can move relative to each other, the locking housing is connected to the telescopic end, one end of the latch arm is hinged to the locking housing, and the two ends of the limiting member are respectively connected to the other end of the latch arm to limit the back movement of the latch arms; when it is necessary to unlock, the telescopic component pushes the locking component to extend out of the door lock housing, and the door bolt moves relative to the door lock housing under the drive of the locking component to achieve unlocking, and when it is necessary to lock, the door bolt is pushed by manpower to be stuck in the locking component located outside the door lock housing at this time, and the telescopic component pulls the locking component and the door bolt retracts into the door lock housing, thereby completing the locking action. The scheme of the present invention can automatically complete the unlocking and locking actions to provide a better user experience.

[0041] The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic switch locking device, characterized in that: include: bolt, A door lock housing, wherein a notch is formed on the door lock housing; Telescopic assembly: The telescopic assembly is disposed in the locking housing and has a telescopic end that can extend or retract relative to the notch; as well as A locking assembly, comprising a locking shell, a limiting member and two latch arms capable of relative movement and embracing the door bolt, wherein the locking shell is connected to the telescopic end, one end of the latch arm is hinged to the locking shell, and both ends of the limiting member are respectively connected to the other end of the latch arm to apply a force to the latch arm to limit its opposite movement.

2. The automatic switch locking device according to claim 1, characterized in that: The telescopic assembly includes a motor, a pushing rack and a gear set. The motor is fixed in the door lock housing, the motor is meshed with the gear set, the pushing rack is movably arranged in the door lock housing, and one end is connected to the locking assembly, and the pushing rack is meshed with the gear set.

3. The automatic switch locking device according to claim 2, characterized in that: One end of the rack is hinged to the locking housing, and a rotation gap is provided between the locking housing and the rack so that the locking housing can be rotated to be inclined relative to a horizontal plane.

4. The automatic switch locking device according to claim 2, characterized in that: It also includes a pair of latch arm pressing assemblies, which are arranged in the door lock shell, and pressing through holes are respectively opened on both sides of the lock shell. When the lock shell is located in the door lock shell, the latch arm pressing assembly partially extends into the pressing through holes to press the latch arm.

5. The automatic switch locking device according to 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 shell, 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 shell, and the other end is fixed to the pressing rod. When the locking shell is located in the door lock shell, the pressing spring applies a force to the pressing rod to squeeze the latch arm, so that the latch arm moves relatively and embraces the bolt body.

6. The automatic switch locking device according to claim 2, characterized in that: The door bolt comprises a carrier plate and a bolt body, wherein the bolt body is fixed on the carrier plate, and the latch arm can embrace the bolt body from two sides to limit the bolt body from moving relative to the door lock housing.

7. The automatic switch locking device according to claim 6, characterized in that: The door bolt further comprises an upper cover, which is arranged on the top of the bolt body and the edge of the upper cover protrudes relative to the edge of the bolt body.

8. The automatic switch locking device according to claim 6, characterized in that: The locking portion further comprises a trigger component and an electric switch, wherein the electric switch is used to detect the status of the bolt assembly and the latch arm, and the trigger component is movably disposed in the housing, and the trigger component can actuate the electric switch when the latch body is in a locked position.

9. The automatic switch locking device according to claim 8, characterized in that: The trigger component includes a trigger rod and a trigger member. The trigger rod is movably arranged in the door lock housing, and the other end is fixed to the trigger rod. One end of the trigger rod has an abutting end abutting 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 switch locking device according to claim 3, characterized in that: The rack forms a hinged end on one end close to the locking shell and is hinged to the locking shell. The end of the rack extends to form an abutment end that can abut against the bottom of the locking shell. The thickness between the hinged end and the abutment end is greater than the thickness of the locking shell.

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