CN113027247B

CN113027247B - Door lock and household appliance

Info

Publication number: CN113027247B
Application number: CN201911354621.9A
Authority: CN
Inventors: 章传; 许耀国; 吕萍
Original assignee: BSH Electrical Appliances Jiangsu Co Ltd; BSH Hausgeraete GmbH
Current assignee: BSH Electrical Appliances Jiangsu Co Ltd; BSH Hausgeraete GmbH
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2023-12-22
Anticipated expiration: 2039-12-24
Also published as: CN113027247A

Abstract

A door lock and a household appliance, the door lock comprising: a handle member adapted to pivot in a first direction; the locking hook component comprises a locking hook which is suitable for locking or unlocking with a locking part; and the transmission mechanism is respectively connected with the handle piece and the lock hook and is driven by the handle piece pivoted along the first direction, and the transmission mechanism drives the lock hook to pivot along the second direction so as to enable the lock hook to be unlocked from the lock part. According to the scheme of the invention, the improved door lock can be provided, the moving direction of the handle piece is not limited by the moving direction of the locking hook, and a user can open the household appliance provided with the door lock in a more ergonomic mode.

Description

Door lock and household appliance

Technical Field

The embodiment of the invention relates to the technical field of locks, in particular to a door lock and a household appliance.

Background

Locks have been widely used in the field of household appliances for enabling the switching operation of the household appliance to be completed by manipulating the locks.

Disclosure of Invention

It is an object of embodiments of the present invention to provide an improved door lock and household appliance.

Accordingly, an embodiment of the present invention provides a door lock including: a handle member adapted to pivot in a first direction; the locking hook component comprises a locking hook which is suitable for locking or unlocking with a locking part; and the transmission mechanism is respectively connected with the handle piece and the lock hook and is driven by the handle piece pivoted along the first direction, and the transmission mechanism drives the lock hook to pivot along the second direction so as to enable the lock hook to be unlocked from the lock part.

The present embodiment provides an improved door lock, which plays a role of transmitting a driving force through a transmission mechanism, and the direction of the force applied when the driving force is transmitted to a latch hook is different from the direction of the initial force applied by a handle piece under the action of the transmission mechanism, so that the latch hook and the handle piece are pivoted in different directions under the driving of the handle piece to complete an unlocking action.

For the household appliance provided with the door lock according to the embodiment, the movement direction of the door handle is not limited by the movement direction of the lock hook member when the lock portion mounted on the coupling object is decoupled, so that the user can open the door of the household appliance in a more ergonomic and more convenient manner, wherein the coupling object is the case of the household appliance and/or the inner door of the household appliance having the door-on-door structure.

Optionally, the second direction is opposite to the first direction. Therefore, when the latch hook moves along the direction towards the door to be decoupled from the coupling object, the reverse force application is realized through the transmission mechanism, so that a user can still finish the door opening action in a mode of pulling the handle outwards when the door is opened, and the whole door opening process is ensured to be more accordant with ergonomics.

Optionally, the door lock further includes: the handle member and the shackle member are pivotally secured to the first shaft. Therefore, the coaxially arranged handle piece and the locking hook piece are beneficial to improving the overall compactness of the door lock structure and reducing the size of the door lock. Furthermore, the handle part and the locking hook can rotate coaxially but differently through the intermediate transition of the transmission mechanism.

Optionally, the pivoting angle of the handle member ranges from 0 ° to 30 °. Therefore, through reasonable design of the rotatable travel of the handle piece, a user can finish the door opening action without pulling the door handle greatly, so that the door opening is more labor-saving.

Optionally, the handle member comprises a grip portion and a pair of pivot portions, the pivot portions being adapted to receive and be pivotable about a first axis, the transmission being located at least partially between the pair of pivot portions. Therefore, the position relation among all parts of the door lock is more compact, the overall size of the door lock is reduced, and the force transmission is more efficient and timely.

Optionally, the latch hook member is pivotally connected to the first shaft. Therefore, the pivot part of the handle part and the latch hook part are coaxially arranged, so that the overall compactness of the door lock structure is improved, and the size of the door lock is reduced. Furthermore, the handle part and the locking hook can rotate coaxially but differently through the intermediate transition of the transmission mechanism.

Optionally, the transmission mechanism includes a lever having opposite first and second ends, the lever being rotatable about a second axis between the first and second ends, the handle member being adapted to drive rotation of the first end to cause the second end to pivot the shackle in the second direction. Therefore, reverse force application is realized based on the lever principle, so that the driving force applied by the handle piece along the first direction can be converted into the driving force along the second direction and then transmitted to the latch hook.

Optionally, the handle member is connected to a first end of the lever, and a second end of the lever is connected to the latch hook member to ensure efficient transmission of the driving force.

Optionally, the first end of the lever has a first boss, a side of the handle element near the first end of the lever has a second boss adapted thereto, the second end of the lever has a third boss, and a side of the latch hook near the lever has a fourth boss adapted thereto, wherein the second boss is adapted to abut against the first boss, and the third boss is adapted to abut against the fourth boss, so as to transmit the driving force of the handle element to the latch hook.

Optionally, the handle member is adapted to rotate about a first axis, the first axis being perpendicular to the second axis. Thereby, the driving force of the handle member rotating about the first axis can be efficiently transmitted to the lever rotating about the second axis.

Optionally, along the direction that the handle piece points to the locking part, the first axle is located the below of lever to through dodging the design and make the overall structure of lock more compact, reduce the door lock size. Further, the design that the first shaft is located the lever below makes the handle piece only need pivot less angle can effectively support the lever, reduces the outside pull range of handle when opening the door, and convenience of customers operates. Wherein the direction in which the handle member points towards the lock portion is parallel to the direction in which the door of the household appliance points towards the housing of the household appliance.

Optionally, the door lock further includes: the lever is located within the receiving cavity and at least a portion of the first shaft is located within the receiving cavity, wherein the handle member is adapted to rotate about the first shaft, the handle member defining at least a portion of a boundary of the receiving cavity. Therefore, the accommodating cavity can play a role in protecting, and the lever is prevented from being damaged by external force collision due to direct exposure. Further, the side of the receiving cavity facing the handle member may be unsealed to facilitate assembly.

Optionally, the distance from the first end of the lever to the second shaft is smaller than the distance from the second end of the lever to the second shaft, so that the optimization of the lever torque is realized by adjusting the force arm, and a user can finish the door opening action by applying a smaller acting force to the handle piece.

Optionally, the door lock further includes: the fixing seat is used for movably arranging the handle piece on a door body so as to firmly assemble the door lock of the embodiment to the household appliance.

Optionally, the plane of the fixing base is substantially perpendicular to the plane of the handle member. Therefore, the door lock can be arranged on the side edge of the door body without installing the door lock on the surface of the door body, and the overall attractiveness of the household appliance, particularly the door, is facilitated to be optimized.

Optionally, the door lock further includes: and the reset mechanism is suitable for driving the latch hook unlocked with the lock part to return to be locked with the lock part. Therefore, automatic locking can be realized when the door is closed, additional acting force is not required to be applied, and the operation is convenient.

Optionally, the door lock further includes: a receiving cavity adapted to receive the reset mechanism and at least a portion of the first shaft, wherein the handle member is adapted to rotate about the first shaft. Therefore, the accommodating cavity can play a role in protecting, and the reset mechanism is prevented from being damaged due to exposure in the use process.

Optionally, the reset mechanism includes: and one end of the torsion spring is propped against the lock hook, and the other end of the torsion spring is propped against the accommodating cavity. Therefore, the accommodating cavity can play a supporting role while playing a protection role, and the fixing point serving as the torsion spring ensures that the latch hook which rotates to be unlocked with the lock part can restore to the original position under the action of the torsion spring so as to automatically be unlocked with the lock part again when the door is closed.

Optionally, the handle member includes: the supporting part is used for bearing the transmission mechanism; and the fixing part is suitable for movably arranging the transmission mechanism on the supporting part. Thereby, the transmission mechanism and the handle member are assembled together by the supporting portion and the fixing portion, so that the driving force of the handle member can be efficiently transmitted to the transmission mechanism.

Optionally, the latch hook includes: a shaft portion pivotably fixed to a first shaft, wherein an extending direction of the first shaft is parallel to a pivot axis of the handle member; and the hook part is connected with the shaft part and is suitable for locking or unlocking with the locking part. Thereby, the pivoting in the second direction is achieved by the shaft portion, and the hook is coupled or uncoupled with the lock portion as the pivoting. The first shaft and the pivot shaft can be the same shaft, so that the whole structure of the door lock is more compact. Alternatively, the first axis and the pivot axis may be two axes parallel to adapt to an application scene where the thickness of the door is large.

Optionally, a protruding portion protruding toward the direction of the transmission mechanism is disposed on a side of the shaft portion facing the transmission mechanism, and the transmission mechanism abuts against the protruding portion to drive the latch hook to pivot along the second direction. Therefore, through the cooperation of the protruding part and the transmission mechanism, the driving force of the handle piece can be effectively transmitted to the lock hook through the transmission mechanism.

Optionally, the door lock further includes: the coupling piece, the coupling piece includes the locking portion, the coupling piece still includes being suitable for the fixed mounting portion of coupling target of locking portion. Therefore, the door adopting the door lock of the embodiment can switch the coupling object in a more ergonomic way through the cooperation of the handle piece, the latch hook piece and the transmission mechanism which are arranged on the door and the coupling piece which is arranged on the coupling object.

The embodiment of the invention also provides a household appliance, which comprises: a body; a first door pivotably provided at a front side of the body, the first door having an opening; a second door pivotably provided at a front side of the first door, the second door being openable or closable of the opening; above-mentioned lock, handle piece, latch hook piece and drive mechanism set up in the second door, lock portion set up in the first door.

Compared with the prior art, the door of the household appliance disclosed by the embodiment of the invention is provided with the improved door lock, so that a user can open the door in an outward pulling mode when opening the outer door, and the operation mode is more in accordance with ergonomics. Further, the door lock can be directly mounted to the second door in the form of an integral assembly, assembly is simple, the door lock is not required to be mounted on an outer door through a hole, the integral appearance of the household appliance is improved, and material cost and labor cost are saved.

Optionally, the transmission mechanism drives the latch hook to pivot in a rotation plane, and the rotation plane is parallel to the plane of the second door. Thus, the overall thickness of the door lock can be minimized, so that the door lock according to the present embodiment can be applied to a door having a small thickness.

Optionally, the household appliance is a freezer/refrigerator to further optimize the heat insulation effect by the door body arrangement of the door upper door, and the opening and closing of the outer door using the above door lock structure is more ergonomic.

Drawings

Fig. 1 is a schematic view of a home appliance according to an embodiment of the present invention;

FIG. 2 is an exploded view of a door body of the home appliance shown in FIG. 1;

FIG. 3 is a schematic view of a door lock in the home appliance of FIG. 1;

FIG. 4 is an exploded view of the door lock of FIG. 3;

FIG. 5 is a partial cross-sectional view of the door lock and door body bonding area of FIG. 1 taken along the direction AA;

in the accompanying drawings:

1-a household appliance; 10-a body; 11-door body; 110-a first gate; 111-opening; 112-a second door; 113-a hinge shaft; 114-a handle portion; 115-notch; 116-decorative plate; 2-door locks; a 20-door handle assembly; 200-handle piece; 201-a latch hook member; 202-latch hook; 203-a transmission mechanism; 204-a first axis; 205—a grip portion; 206-a pivot portion; 207-a support; 208-fixing part; 209-lever; 210-second axis; 211-a first boss; 212-a second boss; 213-a third boss; 214-fourth boss; 215-a receiving cavity; 216-fixing base; 217-mounting holes; 218-a connection; 219-coupling; 220-locking part; 221-avoiding a notch; 222-a reset mechanism; 223-torsion spring; 224-fifth boss; 225-a shaft portion; 226-a hook; 227-a boss; 228-a pivot shaft; 29-a coupling; 290-locking part; 291-mount; 3-coupling an object; a1-a first direction; a2-a second direction; a3-third direction; a4-fourth direction; x-width direction of the household appliance; y-depth direction of the household appliance; z-height direction of the household appliance; l1-distance from the first end of the lever to the second shaft; l2-distance of the second end of the lever from the second axis.

Detailed Description

An embodiment of the present invention provides a door lock including: a handle member adapted to pivot in a first direction; the locking hook component comprises a locking hook which is suitable for locking or unlocking with a locking part; and the transmission mechanism is respectively connected with the handle piece and the lock hook and is driven by the handle piece pivoted along the first direction, and the transmission mechanism drives the lock hook to pivot along the second direction so as to enable the lock hook to be unlocked from the lock part.

The present embodiment provides an improved door lock, which plays a role of transmitting a driving force through a transmission mechanism, and the direction of the force applied when the driving force is transmitted to a latch hook is different from the direction of the initial force applied by a handle piece under the action of the transmission mechanism, so that the latch hook and the handle piece are pivoted in different directions under the driving of the handle piece to complete an unlocking action. Thus, for the household appliance mounted with the door lock according to the present embodiment, the movement direction of the door handle is no longer limited by the movement direction of the latch hook member when the latch portion mounted to the coupling object, which is the case of the household appliance and/or the inner door of the household appliance having the door-on-door structure, is decoupled, so that the user can open the door of the household appliance in a more ergonomic and easy-to-operate manner.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic view of a home appliance according to an embodiment of the present invention; fig. 2 is an exploded view of a door body in the home appliance shown in fig. 1.

Specifically, referring to fig. 1, a home appliance 1 may include: a body 10. The body 10 may include at least one compartment (not shown), each compartment having a access opening (not shown), the compartment being adapted to receive a storage object.

Further, the home appliance 1 may further include: the door 11 is pivotally provided at the front side of the body 10 to open or close the access opening of the compartment. For example, the door bodies 11 may be in one-to-one correspondence with the compartments, and each door body 11 is adapted to open or close the access opening of the corresponding compartment. For another example, the same door 11 may be adapted to simultaneously open or close access ports of a plurality of compartments.

In one implementation, referring to fig. 1 and 2, the door body 11 may include: a first door 110 pivotably provided at a front side of the body 10, the first door 110 having an opening 111; a second door 112 pivotably provided at a front side of the first door 110, the second door 112 opening or closing the opening 111. Wherein the front side refers to the side facing the user in use.

In a variation, the door body 11 of the household appliance 1 according to the present embodiment may be a single door system, such as comprising only the second door 112.

In one implementation, with continued reference to fig. 1 and 2, the household appliance 1 may further comprise: the door lock 2 is adapted to lock or release the door body 11 to or from the body 10.

In an on-door scenario, referring to fig. 2, the door lock 2 may include: door handle assembly 20 and coupling 29, wherein door handle assembly 20 is disposed at second door 112 and coupling 29 is disposed at first door 110.

When door handle assembly 20 and coupling 29 are locked, second door 112 is locked with first door 110 to close opening 111.

When door handle assembly 20 and coupling 29 are unlocked, second door 112 releases first door 110 to open opening 111.

In a single door scenario, door handle assembly 20 may be provided to door body 11 and coupling 29 may be provided to body 10.

When door handle assembly 20 and coupling 29 are locked, door body 11 is locked with body 10 to close the access opening of the corresponding compartment.

When door handle assembly 20 and coupling 29 are unlocked, door body 11 releases body 10 to open the access opening of the corresponding compartment.

In the application scenario where the household appliance 1 is a freezer/refrigerator, the heat insulation effect can be further optimized by the door body 11 of the door upper door, and the opening and closing of the outer door (i.e., the second door 112) adopting the above-described door lock 2 structure is more ergonomic.

In one implementation, with continued reference to fig. 1 and 2, the exterior surface of the second door 112 may be provided with a trim panel 116 and the door handle assembly 20 may be disposed on a first side of the second door 112. The first side of the second door 112 is a side away from the hinge shaft 113 in the width direction (x direction in the drawing) of the home appliance 1. The hinge shaft is a hinge shaft in which the second door 112 is hinged with the first door 110, and the first door 110 is hinged with the body 10. By applying a force to the first side of the second door 112, the second door 112 can be controlled to pivot about the hinge shaft 113.

In particular, in the depth direction (illustrated y-direction) of the household appliance 1, a majority of the structure of the door handle assembly 20 may be located behind the trim panel 116, as shown in fig. 5. Further, only the end of the handle member 200 of the door handle assembly 20 may extend from the first side of the second door 112. Thus, door handle assembly 20 is substantially invisible to the user, optimizing the overall appearance of household appliance 1. When opening the door, the user can position the door handle assembly 20 in a specific position based on the extended handle member 200 and complete the door opening action by pulling the handle member 200 outwardly.

In one implementation, the trim panel 116 may be made of a glass material.

In one implementation, the first side of the first door 110 may be provided with a handle portion 114 adapted to be conveniently held by a user to pull the first door 110 to open or close the access opening of the corresponding compartment. The first side of the first door 110 is a side away from the hinge shaft 113 in the width direction (x direction in the drawing) of the home appliance 1. By applying a force to the first side of the first door 110, the first door 110 can be controlled to pivot about the hinge shaft 113.

Specifically, the handle portion 114 may have a notch 115, and the coupling 29 is mounted to the notch 115. The particular location of the notch 115 may be determined based on the location of the door handle assembly 20 on the second door 112.

Since the door handle assembly 20 is provided at the side of the second door 112, the door lock 2 can be directly mounted to the second door 112 in an integral assembly, and the assembly is simple. The door lock 2 does not need to be installed by punching on the outer door (i.e., the second door 112), which is beneficial to improving the overall beauty of the household appliance 1 and saving the material cost and the labor cost. Further, the door lock 2 mounted at the side of the door body 11 makes the user's motion more ergonomic when pulling the door body 11, and is convenient to operate.

In a variation, the door lock 2 may also be provided at upper/lower sides of the first door 110 and the second door 112. The upper side and the lower side refer to the upper and lower ends in the height direction (z direction in the drawing) of the household appliance 1.

Fig. 3 is a schematic view of a door lock 2 in the home appliance 1 shown in fig. 1; fig. 4 is an exploded view of the door lock 2 shown in fig. 3; fig. 5 is a partial sectional view of the door lock 2 and door body 11 combined area of fig. 1 along AA direction. Wherein fig. 3 and 4 generally illustrate the specific construction of the door handle assembly 20.

In particular, referring to fig. 3 to 5, the door lock 2 may comprise a handle member 200, the handle member 200 being adapted to pivot in a first direction a 1.

The door lock 2 may include a latch hook member 201, the latch hook member 201 including a latch hook 202, the latch hook 202 being adapted to latch or unlatch with a latch 290.

The door lock 2 may include a transmission mechanism 203, the transmission mechanism 203 being connected to the handle member 200 and the latch hook 202, respectively. Driven by the handle member 200 pivoting in the first direction a1, the transmission mechanism 203 is arranged to drive the latch hook 202 to pivot in the second direction a2 to unlock the latch hook 202 from the lock portion 290.

In one implementation, the handle member 200, the shackle member 201, and the transmission mechanism 203 may be pre-assembled into the door handle assembly 20 and integrally mounted to the second door 112 as shown in fig. 1 and 2.

Alternatively, for a single door household appliance 1, the door handle assembly 20 may be modularly mounted to the door body 11 of the household appliance 1.

As described above, the door lock 2 of the present embodiment plays a role of transmitting driving force through the transmission mechanism 203, and the direction of force applied when the driving force is transmitted to the lock hook 202 is different from the direction of initial force applied by the handle member 200 under the action of the transmission mechanism 203, so that it is possible for the lock hook 202 to pivot in different directions with the handle member 200 under the driving of the handle member 200 to complete the unlocking action.

Thus, with the home appliance 1 to which the door lock 2 of the present embodiment is mounted, the movement direction of the door handle is no longer limited by the movement direction at the time of uncoupling the latch hook member 201 from the lock portion 2 mounted to the coupling object 3, so that the user can open the door body 11 of the home appliance 1 in a more ergonomic and easy-to-operate manner. The coupling object 3 may be a case (i.e., the body 10) of the home appliance 1 and/or an inner door (i.e., the first door 110) of the home appliance 1 having a door-on-door structure.

In one implementation, the second direction a2 is opposite to the first direction a 1. Thus, when the latch hook 202 moves in a direction toward the door (e.g., the second door 112) to be decoupled from the coupling object 3, the reverse force is applied by the transmission mechanism 203, so that the user can still finish the door opening operation in a manner of pulling the handle (i.e., the handle member 200) outward when opening the door, thereby ensuring that the whole door opening process is more ergonomic.

In a typical application scenario, referring to fig. 5, the lock 290 is disposed on the first door 110, and the lock 290 is bent toward the body 10 to form a hook shape, and the latch hook 202 is adapted to pivot in a clockwise or counterclockwise direction on a plane formed by the x-direction and the y-direction in the drawing so as to be locked or unlocked with the hook-shaped lock 290. Specifically, the latch hook 202 is latched with the latch 290 provided at the first door 110 when pivoting in the clockwise direction. When pivoted in the counterclockwise direction, the lock hook 202 and the lock portion 290 are unlocked, and the movement direction (the counterclockwise direction is shown as an example in this embodiment) in which the lock hook 202 and the lock portion 290 are unlocked is referred to as a second direction a2.

Further, as the user pulls the handle member 200 in a direction away from the body 10, the handle member 200 is forced to pivot in a clockwise direction. Accordingly, the shackle 202 pivots in a counter-clockwise direction to complete unlocking with the lock portion 290. The movement direction of the handle member 200 when moving in a direction away from the body 10 is shown by way of example in the clockwise direction in this embodiment), is referred to as a first direction a1.

It can be seen that, with the door lock 2 according to the present embodiment, under the action of the transmission mechanism 203, the latch hook 202 and the handle member 200 can move in opposite directions to complete the door opening operation. Therefore, the acting force applied by a user when opening the door is the acting force for outwards pulling the door, which accords with the acting habit when opening the door, so that the door lock design which accords with the human engineering better is possible.

It should be noted that the clockwise direction and the counterclockwise direction in this embodiment are described with reference to the view angle shown in fig. 5.

In one implementation, with continued reference to fig. 3-5, the door lock 2 may further include: the first shaft 204, the handle member 200 and the latch hook member 201 are pivotally secured to the first shaft 204. Thus, the coaxially disposed handle member 200 and the latch hook member 201 facilitate an improvement in the overall compactness of the structure of the door lock 2, and a reduction in the size of the door lock 2. Further, the intermediate transition of the transmission 203 enables the handle part 200 and the locking hook 202 to rotate coaxially but differently.

In a variation, the handle member 200 and the latch hook member 201 may not be coaxially disposed to accommodate applications where the thickness of the door 11 is large. For example, the handle member 200 is pivotally secured to a pivot shaft 228 and the shackle 202 is pivotally secured to the first shaft 204. Wherein the extension directions of the pivot shaft 228 and the first shaft 204 may be parallel. Also, in the y-direction, the first shaft 204 may be closer to the first door 110 than the pivot shaft 228. Thus, for the second door 112 having a large thickness, effective coupling of the latch hook 202 with the latch portion 290 provided at the first door 110 can be ensured without extending the length of the latch hook 202 in the y-direction.

When the handle member 200 and the shackle member 201 are coaxially disposed, the pivot axis 228 is the first axis 204.

In one implementation, the pivot angle of the handle member 200 may range from 0 ° to 30 °. Therefore, through reasonable design of the rotatable stroke of the handle piece 200, a user can finish the door opening action without pulling the door handle greatly, so that the door opening is more labor-saving.

Specifically, the pivot angle of the handle member 200 refers to an angle between an extending direction of the handle member 200 when the handle member 200 is pivoted to a specific position in the first direction a1 and an extending direction when the handle member 200 is at the initial position. The initial position is a position of the handle member 200 when the latch hook 202 is locked with the lock portion 290, as shown in fig. 5, and at this time, the pivot angle of the handle member 200 is 0 °.

Further, 30 ° may be the maximum pivot angle of the handle member 200, when the handle member 200 is in this position, the latch hook 202 has been pivoted in the second direction a2 to be unlocked from the lock portion 290.

The range of pivoting angles of the handle member 200 may be determined according to the gap between the different door bodies 11, and is preferably not more than 15 °. For example, the maximum pivot angle range of the handle member 200 may be 10 °.

The limitation of the maximum pivot angle of the handle member 200 may be achieved by a limiting structure provided to the first shaft 204.

In practice, the range of pivot angles of the handle member 200 may be determined according to the angle at which the shackle 202 and the lock portion 290 pivot from locked to unlocked.

In one implementation, with continued reference to fig. 3-5, the handle member 200 may include a grip portion 205 and a pair of pivot portions 206. The pivot portion 206 is adapted to receive the first shaft 204 and is pivotable about the first shaft 204. The transmission 203 is at least partially located between a pair of pivot portions 206. Therefore, the position relation among the parts of the door lock 2 is more compact, the overall size of the door lock 2 is reduced, and the force transmission is more efficient and timely.

Specifically, a pair of pivot portions 206 may be provided at both ends of the grip portion 205, respectively, in the axial direction of the first shaft 204. The pair of pivot portions 206 provided at both ends of the grip portion 205 and the notch defined by the grip portion 205 are adapted to provide the transmission mechanism 203 so that the overall structure of the door handle assembly 20 is more compact.

Further, a pair of pivot portions 206 provided at both ends of the grip portion 205 and a notch surrounded by the grip portion 205 are also adapted to provide at least a portion of the latch hook member 201 so that the driving force of the handle member 200 can be effectively transmitted to the latch hook 202 through the transmission mechanism 203.

Specifically, along the axial direction of the first shaft 204, the transmission mechanism 203 has two ends respectively of one of the pair of pivot portions 206 and the latch hook 202. The side of the shackle 202 remote from the transmission mechanism 203 is the other of the pair of pivot portions 206.

For example, the first shaft 204 may pass through one of the pair of pivot portions 206, the latch hook member 201, and the other of the pair of pivot portions 206 in order such that the latch hook 202 is disposed coaxially with the handle member 200.

In a variation, the number of pivot portions 206 may be one and disposed at either end of the grip portion 205 in the axial direction of the first shaft 204. The end of the grip portion 205 where the pivot portion 206 is not provided is adapted to be provided with the transmission mechanism 203. Further, the end of the grip portion 205 where the pivot portion 206 is not provided is adapted to provide the transmission mechanism 203 and also adapted to provide the latch hook member 201.

Specifically, one end of the first shaft 204 in the axial direction may have a cap (not shown), and the other end of the first shaft 204 in the axial direction sequentially passes through the pivot portion 206, the latch hook member 201, and is coupled with a fixing member (not shown) to prevent the first shaft 204 from being accidentally detached.

In one implementation, the pivot portion 206 may be hollow to house the first shaft 204.

In one implementation, the grip portion 205 and the pivot portion 206 may be integrally formed to increase structural rigidity.

In one implementation, the end of the grip portion 205 remote from the pivot portion 206 may be bent away from the shackle member 201, the bent portion being adapted to protrude from the first side of the second door 112 for convenient grasping by a user.

Further, the grip portion 205 may be bent forward and extended to overlap with an end surface of the second door 112 to shield a gap between the handle member 200 and the second door 112. Wherein the end face may refer to the decorative plate 116, forward to the direction away from the coupling object 3.

In one implementation, the handle member 200 may include a support 207 for carrying the transmission 203. The handle member 200 may comprise a fixing portion 208, the fixing portion 208 being adapted to movably arrange the transmission 203 to said support portion 207. Thereby, the transmission mechanism 203 and the handle member 200 are assembled together through the supporting portion 207 and the fixing portion 208, so that the driving force of the handle member 200 can be efficiently transmitted to the transmission mechanism 203.

Specifically, the supporting portion 207 may extend from a gap defined by a pair of pivot portions 206 provided at both ends of the grip portion 205 and the grip portion 205 in a direction away from the handle member 200 to form a supporting surface. The transmission mechanism 203 may be provided with a through hole (not shown), one end of the fixing portion 208 is fixed to the supporting surface, and the opposite end of the fixing portion 208 extends from the through hole of the transmission mechanism 203, so that the transmission mechanism 203 is fixed to the supporting portion 207 and can rotate around the fixing portion 208.

For example, the securing portion 208 may be a pin.

In one implementation, the transmission 203 drives the shackle 202 to pivot in a plane of rotation, which may be parallel to the plane of the second door 112. Thereby, the overall thickness of the door lock 2 in the y-direction can be minimized, so that the door lock 2 of the present embodiment can be applied to the door body 11 having a small thickness.

For example, the rotation plane may be defined by a support surface formed by the support portion 207, and when the support surface formed by the support portion 207 is parallel to the plane in which the second door 112 is located and the fixing portion 208 fixes the transmission mechanism 203 to the support portion 207 in a direction perpendicular to the support surface, the transmission mechanism 203 may be caused to rotate in the rotation plane parallel to the plane in which the second door 112 is located.

In one implementation, the direction of extension of the first shaft 204 may be parallel to the height direction (illustrated z-direction) of the household appliance 1.

Alternatively, the first axis 204 may extend at a non-zero angle to the z-direction in the plane of the x-direction and the z-direction. Thus, the door lock 2 can be applied to the door body 11 whose edge is irregularly shaped.

Alternatively, the extending direction of the first shaft 204 may be parallel to the width direction (x direction in the drawing) of the home appliance 1, and accordingly, the door lock 2 may be provided at an upper edge or a lower edge of the door body 11 and the coupling object 3 in the z direction.

In one implementation, with continued reference to fig. 3-5, the transmission 203 may include a lever 209, the lever 209 having opposite first and second ends 209a, 209b. The lever 209 is rotatable about a second axis 210 between the first end 209a and the second end 209b. The handle member 200 is adapted to drive the first end 209a to rotate such that the second end 209b drives the latch hook 202 to pivot along the second direction a 2. Thereby, a reverse biasing force is achieved based on the lever principle, so that the driving force applied by the handle member 200 in the first direction a1 can be converted into the driving force in the second direction a2 and then transmitted to the latch hook 202.

Specifically, the second shaft 210 may be formed by the fixing portion 208.

In one implementation, the first end 209a of the lever 209 has a first boss 211. The side of the handle member 200 adjacent the first end 209a of the lever 209 has an adapted second boss 212. The second end 209b of the lever 209 has a third boss 213. The latch hook 202 has a fourth mating boss 214 on the side near the lever 209. Wherein the second boss 212 is adapted to abut against the first boss 211, and the third boss 213 is adapted to abut against the fourth boss 214, so as to transmit the driving force of the handle member 200 to the latch hook 202.

Specifically, the first boss 211 is located between the second boss 212 and the grip 205. Similarly, the third boss 213 is located between the fourth boss 214 and the grip 205.

Further, the second boss 212 may protrude from a side of the pivot portion 206 near the first end 209a of the lever 209 facing the lever 209 and extend in the direction of the lever 209.

Similarly, the fourth boss 214 may extend from a side of the latching hook 202 facing the lever 209 and toward the lever 209.

In a typical application scenario, the grip portion 205 is rotated about the first axis 204 in the first direction a1 by an external force according to the direction of movement indicated by the dashed arrow line in fig. 4. The pivot portion 206 integrally formed with the grip portion 205 rotates in the same direction around the first shaft 204. As the pivot portion 206 rotates, the second boss 212 moves in the first direction a1 to abut against the first boss 211.

Further, the first boss 211 rotates about the second shaft 210 in the third direction a3 under the holding force of the second boss 212. Wherein the third direction a3 is a movement direction gradually approaching the grip portion 205 in the rotation plane.

Further, according to the lever principle, the first boss 211 rotates around the second shaft 210 in the third direction a 3. The third boss 213 at the second end 209b of the lever 209 rotates about the second axis 210 in the fourth direction a4 in synchronization. Wherein the fourth direction a4 is a movement direction gradually away from the grip portion 205 in the rotation plane.

Further, as the third boss 213 rotates in the fourth direction a4 about the second shaft 210 to abut against the fourth boss 214. Under the action of the supporting force, the fourth boss 214 drives the latch hook 202 to rotate around the first shaft 204 along the second direction a2, so that the latch hook 202 is driven by the handle piece 200 to move reversely.

In one implementation, the grip member 200 is coupled to a first end 209a of the lever 209 and a second end 209b of the lever 209 is coupled to the shackle member 201 to ensure efficient transmission of the driving force.

For example, with respect to the pivot portion 206 near the first end 209a of the lever 209, the side of the pivot portion 206 facing the lever 209 and the first end 209a of the lever 209 may be elastically connected to enable the driving force of the grip 200 to be efficiently transmitted to the lever 209 while securing a sufficient pivoting space.

Similarly, the side of the latch hook member 201 facing the lever 209 and the second end 209b of the lever 209 may be elastically connected to enable the effective transmission of the force of the lever 209 to the latch hook 202 while securing a sufficient pivoting space.

In one implementation, the first axis 204 may be perpendicular to the second axis 210. Thereby, the driving force of the handle member 200 rotating about the first shaft 204 can be efficiently transmitted to the lever 209 rotating about the second shaft 210.

In one implementation, with continued reference to fig. 3-5, the first shaft 204 may be positioned below the lever 209 in the direction of the handle member 200 toward the lock 290 to make the overall structure of the door lock 2 more compact and reduce the size of the door lock 2 by way of a back-out design. Further, the design that the first shaft 204 is located below the lever 209 enables the handle piece 200 to be effectively abutted to the lever 209 only by pivoting a small angle, so that the outward pulling amplitude of the handle during door opening is reduced, and the operation of a user is facilitated. In which the direction in which the handle member 200 points towards the lock 290 is parallel to the direction in which the door body 11 of the household appliance 1 points towards the housing (i.e. the body 10) of the household appliance 1, i.e. the illustrated y-direction.

In one implementation, with continued reference to fig. 3-5, the door lock 2 may further include a receiving cavity 215, with the lever 209 being located within the receiving cavity 215. At least a portion of the first shaft 204 may be positioned within the receiving cavity 215. The handle member 200 may define at least a portion of a boundary of the receiving cavity 215. This is particularly advantageous in making the structure of the door lock 2 more compact. In addition, the accommodating cavity 215 can play a role in protecting the lever 209 from being damaged by external force collision due to direct exposure.

The side of the receiving cavity 215 facing the handle member 200 may be unsealed to facilitate assembly.

For example, the receiving cavity 215 may have a hollow structure, and a groove (not shown) exposing the hollow structure is formed at a side facing the grip portion 205, and an extending direction of the groove may be parallel to an axial direction of the first shaft 204.

After the lever 209 is mounted to the support portion 207 through the fixing portion 208, the receiving cavity 215 may be sleeved outside the lever 209 and the support portion 207 along the groove so that the lever 209 and the support portion 207 are componentized within the receiving cavity 215.

The first shaft 204 may pass through one of the pair of pivot portions 206, the receiving cavity 215, the shackle member 201, and the other of the pair of pivot portions 206 in order to complete the modular assembly of the door handle assembly 20.

In one implementation, the receiving cavity 215 may be located in a gap defined by a pair of pivot portions 206 disposed at both ends of the grip portion 205 and the grip portion 205.

In one implementation, the side of the receiving cavity 215 facing the grip 205 may be arcuate to provide a pivot space for the grip 205.

In one implementation, referring to fig. 4, the distance L1 of the first end 209a of the lever 209 to the second axis 210 may be less than the distance L2 of the second end 209b of the lever 209 to the second axis 210. Thus, the torque of the lever 209 can be optimized by adjusting the arm of force, so that the user can complete the door opening operation by applying a small force to the handle member 200.

In one implementation, with continued reference to fig. 3 and 4, the door lock 2 may further include a fixing base 216, where the fixing base 216 is used to movably locate the handle member 200 on a door body 11, so as to firmly assemble the door lock 2 of the present embodiment to the household appliance 1.

Further, the holder 216 includes a connection portion 218. The accommodating chamber 215 is correspondingly provided with a coupling part 219. The connecting portion 218 is coupled with the coupling portion 129 to connect the handle member 200 to the fixing base 216 through the receiving cavity 215.

For example, the connection portion 218 may be a plurality of through holes opened along an axial direction of the first shaft 204. The coupling part 219 may be a plurality of coupling holes having internal threads opened in the axial direction of the first shaft 204. Wherein, the coupling holes are in one-to-one correspondence with the through holes.

After the receiving cavity 215 is mounted to the handle member 200, the locking portion 220 passing through the connecting portion 218 is screw-coupled with the coupling portion 219 to fix the receiving cavity 215 to the fixing base 216. For example, the locking part 220 may be a screw.

Further, the fixing base 216 may have a mounting hole 217, and when assembled, the fixing base 216 is fixed to the second door 112 by being coupled with a screw (not shown) and the mounting hole 217.

Further, the number of the mounting holes 217 may be two and located at both ends of the fixing base 216 in the axial direction of the first shaft 204, respectively.

In one implementation, a side of the fixing base 216 away from the second door 112 may be provided with an avoidance notch 221 to avoid the latch hook 202, so as to provide a movement space for the latch hook 202 to pivot along the second direction a 2.

In one implementation, the plane of the anchor mount 216 is substantially perpendicular to the plane of the handle member 200. Therefore, the door lock 2 of the present embodiment may be disposed at a side edge of the door body 11, without opening holes on a surface of the door body 11 to mount the door lock 2, which is beneficial to optimizing the overall aesthetic degree of the household appliance 1, especially the door body 11.

For example, the plane in which the fixing base 216 is located may be perpendicular to the width direction (x direction in the drawing) of the home appliance 1. Accordingly, the plane in which the grip member 200 lies (e.g., the plane in which the grip portion 205 lies) may be substantially perpendicular to the depth direction (illustrated y-direction) of the household appliance 1, as illustrated in fig. 5.

In one implementation, with continued reference to fig. 4, the door lock 2 may further include: the reset mechanism 222 is adapted to drive the shackle 202 unlocked from the lock 290 back into locking engagement with the lock 290. Therefore, automatic locking can be realized when the door is closed, additional acting force is not required to be applied, and the operation is convenient.

Specifically, the reset mechanism 222 may be located within the receiving cavity 215. Therefore, the accommodating cavity 215 can play a role in protecting the reset mechanism 222 from being damaged due to exposure in the use process.

Further, the return mechanism 222 may include a torsion spring 223. One end of the torsion spring 223 abuts against the latch hook 202, and the other end of the torsion spring 223 abuts against the accommodating cavity 215. Thus, the receiving cavity 215 can play a supporting role while playing a protection role, and the locking hook 202 which is used as a fixing point of the torsion spring 223 and is rotated to be unlocked with the locking part 290 can be restored to the original position under the action of the torsion spring 223, so that the locking part 290 can be automatically locked again when the door body 11 is closed.

For example, with respect to the torsion spring 223 located in the housing chamber 215, the other end of the torsion spring 223 abuts against the inner wall of the housing chamber 215 having a hollow structure.

For another example, a side of the latch hook member 201 facing the receiving cavity 215 may be provided with a fifth boss 224. The fifth boss 224 may protrude toward the receiving chamber 215 in the axial direction of the first shaft 204.

Further, the fifth boss 224 may be located above the fourth boss 214 in a direction in which the hook portion 226 of the latch hook 202 is directed toward the shaft portion 225 thereof. A gap may exist between the fifth boss 224 and the fourth boss 214. One end of the torsion spring 223 protrudes from the receiving cavity 215 and into the gap, so that the torsion spring 223 can be elastically deformed with the pivoting of the latch hook 202.

Further, a side of the fifth boss 224 remote from the fourth boss 214 may be provided with a reinforcing rib to increase structural rigidity.

In one implementation, with continued reference to fig. 4, the shackle 202 may include a shaft portion 225, the shaft portion 225 being pivotally secured to the first shaft 204. The direction of extension of the first shaft 204 may be parallel to the pivot axis 228 of the handle member 200. The shackle 202 may include a hook portion 226 coupled to a shaft portion 225. The hook 226 is adapted to lock or unlock with the lock 290.

Thereby, pivoting in the second direction a2 is achieved by the shaft portion 225, and the hook portion 226 is coupled or decoupled with the lock portion 290 as it pivots. The first shaft 204 and the pivot shaft 228 may be the same shaft, so that the overall structure of the door lock 2 is more compact, as shown in fig. 3 to 5. Alternatively, the first shaft 204 and the pivot shaft 228 may be two shafts parallel to adapt to the application scene of the door 2 with a large thickness.

For example, the hook 226 may be bent in a direction approaching the second door 112 to form a hook shape opposite to the locking part 290, thereby ensuring that the hook 226 can be effectively locked with the locking part 290.

For another example, the shaft portion 225 may be provided with a through hole in an axial direction of the first shaft 204 to accommodate the first shaft 204.

In one implementation, the hook 226 and the shaft 225 may be integrally formed.

In one implementation, a side of the shaft portion 225 facing the transmission mechanism 203 may be provided with a protrusion 227 protruding toward the direction of the transmission mechanism 203, and the transmission mechanism 203 abuts against the protrusion 227 to drive the latch hook 202 to pivot in the second direction a 2. Thus, the driving force of the handle member 200 can be effectively transmitted to the latch hook 202 through the transmission mechanism 203 by the engagement of the protrusion 227 with the transmission mechanism 203.

For example, the fourth boss 214 may be formed by a boss 227.

In one implementation, the shaft portion 225 and the hook portion 226 may be respectively formed with square holes to reduce the wall thickness of the latch hook 202 and ensure that the wall thickness of the components is approximately uniform.

In one implementation, referring to fig. 2 and 5, door lock 2 may further include a coupling 29, and coupling 29 may include a lock 290. The coupling 29 may further comprise a mounting portion 291 adapted to secure the lock 290 to the coupling object 3. Thus, the door body 11 of the door lock 2 according to the present embodiment can switch the coupling object 3 in a more ergonomic manner by the cooperation of the handle member 200, the lock hook member 201, and the transmission mechanism 203 mounted to the door body 11 and the coupling member 29 mounted to the coupling object 3.

For example, the mounting portion 291 may be secured to the notch 115 of the first door 110 by a threaded connection, an interference fit, an adhesive, or the like.

Thus, with the solution of the present embodiment, for the door upper door of the household appliance 1 equipped with the door lock 2, the user can open the door in an outward pulling manner when opening the outer door (i.e., the second door 112), and the operation manner is more ergonomic.

Although in the above embodiment, the door lock 2 is used to lock the first door and the second door. However, it should be understood that the door lock 2 may also be used for locking any door, for example between a door and a body of a household appliance, or between a cabin inside a household appliance and a door to close the cabin.

Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the disclosure, even where only a single embodiment is described with respect to a particular feature. The characteristic examples provided in this disclosure are intended to be illustrative, not limiting, unless stated differently. In the specific implementation, the technical features of one or more dependent claims may be combined with the technical features of the independent claims and the technical features from the respective independent claims may be combined in any suitable manner and not merely by the specific combinations enumerated in the claims.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.

Claims

1. A door lock (2), characterized by comprising:

-a handle member (200), said handle member (200) being adapted to pivot in a first direction (a 1);

a latch hook member (201), the latch hook member (201) comprising a latch hook (202), the latch hook (202) being adapted to latch or unlatch with a latch portion (290); and

-a transmission mechanism (203), the transmission mechanism (203) being connected to the handle member (200) and the latch hook (202) respectively and being driven by the handle member (200) pivoting in the first direction (a 1), the transmission mechanism (203) driving the latch hook (202) to pivot in a second direction (a 2) to unlatch the latch hook (202) from the latch portion (290), wherein the second direction (a 2) is opposite to the first direction (a 1);

the door lock (2) further comprises: a first shaft (204), the handle member (200) and the latch hook member (201) being pivotally secured to the first shaft (204);

the transmission mechanism (203) comprises a lever (209), the lever (209) is provided with a first end (209 a) and a second end (209 b) which are opposite, the lever (209) can rotate around a second shaft (210) which is positioned between the first end (209 a) and the second end (209 b), and the handle piece (200) is suitable for driving the first end (209 a) to rotate so that the second end (209 b) drives the latch hook (202) to pivot along the second direction (a 2).

2. Door lock (2) according to claim 1, characterized in that the pivoting angle of the handle piece (200) ranges from 0 ° to 30 °.

3. The door lock (2) according to claim 1, wherein the handle member (200) comprises a grip portion (205) and a pair of pivot portions (206), the pivot portions (206) being adapted to receive a first shaft (204) and being pivotable about the first shaft (204), the transmission mechanism (203) being at least partially located between the pair of pivot portions (206).

4. Door lock (2) according to claim 1, characterized in that the shackle member (201) is pivotally connected to the first shaft (204).

5. Door lock (2) according to claim 1, characterized in that the handle member (200) is connected to a first end (209 a) of the lever (209), and a second end (209 b) of the lever (209) is connected to the locking hook member (201).

6. Door lock (2) according to claim 1, characterized in that the first end (209 a) of the lever (209) has a first boss (211), the side of the handle piece (200) near the first end (209 a) of the lever (209) has a second boss (212) adapted, the second end (209 b) of the lever (209) has a third boss (213), the side of the locking hook (202) near the lever (209) has a fourth boss (214) adapted, wherein the second boss (212) is adapted to abut against the first boss (211), the third boss (213) is adapted to abut against the fourth boss (214).

7. The door lock (2) according to claim 1, wherein the handle member (200) is adapted to rotate about a first axis (204), the first axis (204) and the second axis (210) being perpendicular.

8. The door lock (2) according to claim 7, characterized in that the first shaft (204) is located below the lever (209) in a direction in which the handle member (200) points towards the lock portion (290).

9. The door lock (2) according to claim 1, further comprising: -a housing cavity (215), the lever (209) being located within the housing cavity (215) and at least part of the first shaft (204) being located within the housing cavity (215), wherein the handle member (200) is adapted to rotate about the first shaft (204), the handle member (200) defining at least part of a boundary of the housing cavity (215).

10. The door lock (2) according to claim 1, characterized in that the distance (L1) of the first end (209 a) of the lever (209) to the second shaft (210) is smaller than the distance (L2) of the second end (209 b) of the lever (209) to the second shaft (210).

11. The door lock (2) according to any one of claims 1 to 4, further comprising:

the fixed seat (216) is used for movably arranging the handle piece (200) on a door body (11).

12. The door lock (2) according to any one of claims 1 to 4, further comprising:

and a reset mechanism (222) adapted to drive the latch hook (202) unlocked from the lock portion (290) to return to locking with the lock portion (290).

13. The door lock (2) according to claim 12, further comprising: -a housing cavity (215), the housing cavity (215) being adapted to house the return mechanism (222) and at least part of the first shaft (204), wherein the handle member (200) is adapted to rotate around the first shaft (204).

14. The door lock (2) according to claim 13, characterized in that the reset mechanism comprises: the torsion spring (223), one end of torsion spring (223) support in latch hook (202), the other end of torsion spring (223) support in accept chamber (215).

15. Door lock (2) according to any of claims 1 to 4, characterized in that said handle member (200) comprises:

a support (207) for carrying the transmission (203);

and a fixing part (208) adapted to movably dispose the transmission mechanism (203) to the supporting part (207).

16. The door lock (2) according to any one of claims 1 to 4, characterized in that the locking hook (202) comprises:

a shaft portion (225), the shaft portion (225) being pivotably fixed to a first shaft (204), wherein an extending direction of the first shaft (204) is parallel to a pivot axis (228) of the handle member (200);

a hook (226) connected to the shaft (225), the hook (226) being adapted to lock or unlock the lock (290).

17. Door lock (2) according to claim 16, characterized in that the side of the shaft part (225) facing the transmission mechanism (203) is provided with a protrusion (227) protruding in the direction of the transmission mechanism (203), the transmission mechanism (203) being in abutment with the protrusion (227) for driving the shackle (202) to pivot in the second direction (a 2).

18. The door lock (2) according to any one of claims 1 to 4, further comprising:

-a coupling (29), the coupling (29) comprising the lock (290), the coupling (29) further comprising a mounting (291) adapted to fix the lock (290) to a coupling object (3).

19. A household appliance (1), characterized by comprising:

a body (10);

a first door (110) pivotably provided to a front side of the body (10), the first door (110) having an opening (111);

a second door (112) pivotably provided at a front side of the first door (110), the second door (112) being openable or closable to the opening (111);

the door lock (2) according to any one of the preceding claims 1 to 18, wherein the handle member (200), the latch hook member (201) and the transmission mechanism (203) are provided to the second door (112), and the lock portion (290) is provided to the first door (110).

20. The household appliance (1) according to claim 19, wherein the transmission mechanism (203) drives the latch hook (202) to pivot in a rotation plane parallel to the plane of the second door (112).

21. The household appliance (1) according to claim 19, wherein the household appliance (1) is a freezer/refrigerator.