CN110541627B

CN110541627B - Push type lock and washing machine with same

Info

Publication number: CN110541627B
Application number: CN201910859201.XA
Authority: CN
Inventors: 王立孟
Original assignee: Wenzhou Tianjian Electric Co ltd
Current assignee: Wenzhou Tianjian Electric Co ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-11-17
Anticipated expiration: 2039-09-11
Also published as: CN110541627A

Abstract

The invention provides a pressing type door lock and a washing machine with the same, and belongs to the technical field of door locks, wherein the pressing type door lock comprises: the positioning rod is connected with the base in a rotatable mode, and the other end of the positioning rod is connected with the lock catch through a twisting structure; the twisting structure allows the lock catch to move back and forth, swing left and right and swing up and down towards the cam assembly; a first elastic member is connected between the base and the positioning rod, and the first elastic member has a biasing force which enables the positioning rod to deflect towards a direction away from the cam assembly; according to the push type door lock, when the child lock function is achieved, the cam assembly rotates towards the unlocking position, the lock catch can automatically unlock the cam assembly through swinging, and compared with a child lock structure in the prior art, the push type door lock can reduce abrasion of the cam assembly on the lock catch and prolong the service life of the door lock.

Description

Push type lock and washing machine with same

Technical Field

The invention relates to the technical field of door locks, in particular to a pressing type door lock and a washing machine with the same.

Background

Push type door lock, namely, door lock that can lock a door by pressing a door panel from the outside to the inside. When used in a fully automatic washing machine, the door lock also needs to have a child lock function, i.e., a function of unlocking by pushing the door panel from the inside to the outside.

A push type door lock disclosed in chinese patent document CN110079978A, comprising: a cam assembly, a cam bracket and a latch. The cam component is rotationally connected to the cam support, when the door plate is pushed from outside to inside, the door hook can drive the cam component to rotate to a locking position, and then the cam component is locked through the lock catch, so that the door is locked; when the door plate is pushed from inside to outside, the door hook can drive the cam support to move, so that the cam assembly is driven to move towards the direction of disengaging from the lock catch, the cam assembly is enabled to disengage from the lock catch, and then the cam assembly can turn to the unlocking position under the action of the elastic piece, so that the child lock function is realized.

However, in the above prior art scheme, when the child lock function is realized, the cam assembly needs to be driven to move through the movement of the cam bracket, at this time, the cam assembly and the latch are still in a connection state, and because the latch cannot move along with the cam assembly, the cam assembly is forcibly moved to separate the cam assembly from the latch, after long-time operation, the latch is easily worn seriously, so that the door locking difficulty is caused, and the service life of the door lock is influenced.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defects that in the press-type door lock in the prior art, as the lock catch cannot move along with the cam assembly, when the child lock function is realized, the lock catch is seriously abraded, the door is easily locked, and the service life of the door lock is influenced, so that the press-type door lock capable of prolonging the service life of the door lock is provided.

The invention also provides a washing machine with the press type door lock.

In order to solve the above technical problems, the present invention provides a push type door lock, including:

a base;

a cam assembly rotatably mounted within the base;

one end of the lock catch is provided with a locking structure, and the other end of the lock catch is connected with the positioning rod;

one end of the positioning rod is rotatably connected with the base, and the other end of the positioning rod is connected with the lock catch through a twisting structure; the twisting structure allows the lock catch to move back and forth, swing left and right and swing up and down towards the cam assembly;

and a first elastic member connected between the base and the positioning rod, and having a biasing force that deflects the positioning rod in a direction away from the cam module.

Preferably, the method further comprises the following steps:

and the second elastic element is connected between the base and the lock catch and has biasing force for deflecting one end of the lock catch with the locking structure towards the direction close to the cam assembly.

Preferably, the method further comprises the following steps:

and the lever is rotatably connected in the base and is provided with an abutting surface for blocking the cam component from rotating towards the unlocking direction.

Preferably, the abutment surface is adapted to cooperate with a snap-in surface of an upper snap-in portion of the cam assembly.

Preferably, the abutment surface is a sloped surface, and the abutment surface is at least partially parallel to the snap-in surface when the cam module is in the locked position.

Preferably, the method further comprises the following steps:

the protruding block is fixedly arranged on the base and is positioned below the lock catch;

the bottom of the lock catch is provided with a contact surface in sliding fit with the protruding block, and the contact surface is provided with an inclined surface.

Preferably, the method further comprises the following steps:

the spring fixing piece is connected to the base through insertion and is opposite to the positioning rod;

the protruding block is connected to the spring fixing piece.

Preferably, the method further comprises the following steps:

the unlocking slide block is slidably arranged in the base and is connected with the middle of the lock catch, and the lock catch can be pushed to swing towards the direction far away from the cam assembly along the left-right direction by the driving of the driving device.

Preferably, the cam assembly comprises:

the cam body is rotatably connected to the base through a rotating shaft and is provided with a bayonet for clamping the door hook;

the cam auxiliary part is connected to the cam body in a sliding mode through a bolt, and the sliding direction of the bolt is located on the outer side of the tangent line of the rotating shaft;

an adsorption elastic member respectively connected to the cam body and the cam auxiliary, and having a biasing force for keeping the cam body and the cam auxiliary away from each other;

and a torsion spring connected between the cam assembly and the base, and having a biasing force that maintains the cam assembly to rotate in an unlocking direction when the cam assembly is in the locking position.

Preferably, the method further comprises the following steps:

the sliding abutting block is elastically and slidably connected to the base, is provided with a sliding surface used for pushing the bolt before the cam assembly rotates to the locking position, and is also provided with a vertical surface used for blocking the bolt after the cam assembly rotates to the locking position;

and a slider elastic member connected between the sliding abutting block and the base and having a biasing force for keeping the sliding abutting block pushed toward the cam module.

The invention provides a washing machine, which is provided with a push type door lock in any one of the above schemes.

The technical scheme of the invention has the following advantages:

1. according to the press type door lock provided by the invention, when the cam assembly rotates to the locking position, the cam assembly can be locked through the locking structure of the lock catch, the lock catch is connected to the positioning rod through one end, and when the cam assembly rotates towards the unlocking direction, the lock catch can move back and forth, swing left and right and swing up and down along with the cam assembly; therefore, when realizing the child lock function, the cam subassembly rotates towards the unblock position, and the hasp accessible swings and removes the locking to the cam subassembly by oneself, compares in prior art child lock structure, can reduce the wearing and tearing of cam subassembly to the hasp, improves the life of lock.

2. According to the press type door lock provided by the invention, when the cam assembly rotates to the locking position, the clamping surface of the clamping part of the cam assembly is contacted with the abutting surface of the lever, and the abutting surface is an inclined surface parallel to the clamping surface, so that the locking effect of the lever on the cam assembly can be increased, and the cam assembly cannot easily rotate towards the unlocking position.

3. The invention provides a push type door lock.A contact surface is arranged below a lock catch, an inclined surface is arranged on the contact surface, when the lock catch moves forwards towards the cam component, the inclined surface is matched with a protruding block on a base, and one end of the lock catch with a lock connection structure can be tilted upwards, so that the lock of the cam component is released lightly; therefore, when the child lock function is adopted for unlocking, the device has the advantage of low noise.

In addition, in the unlocking process of the child lock, the unlocking force of the child lock is controlled through the inclined surface below the lock catch instead of the elastic piece, so that the controllability of the unlocking force of the child lock is higher in the long-time use process, and the requirement of the unlocking force of the lock can be met for a longer time.

4. According to the push type door lock provided by the invention, through the overturning design of the positioning rod, the elastic piece cannot be stretched or compressed to deform greatly in the unlocking process of the child lock, so that the service life of the elastic piece can be prolonged, and the service life of the door lock can be further prolonged.

5. The cam assembly structure of the push type door lock provided by the invention is combined, and the cam body and the cam auxiliary piece can slide relatively. The cam component can push the adsorption elastic component to perform elastic deformation through relative sliding between the cam body and the cam auxiliary component in the process of being driven to rotate by the door hook. When the door hook drives the cam assembly to rotate to the preset position before the locking position, the elastic force generated by elastic deformation of the adsorption elastic component can be converted into the adsorption force for enabling the cam assembly to rotate towards the locking position, so that at the preset position before the door hook is locked by the cam assembly, the elastic force of the adsorption elastic component can enable the cam assembly to enter the locking position more conveniently, and the door hook and the cam assembly can be better matched; at this default position, operating personnel can experience the adsorption affinity that the cam subassembly produced, reduces the driving force to the door hook in advance, can avoid excessively promoting the cam subassembly.

6. The washing machine provided by the invention has the advantages of any one item because of the press type door lock of any one item.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view illustrating an internal structure of a pressing type door lock according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view of the cam assembly.

Fig. 3 is a front sectional view of fig. 2.

Fig. 4 is a schematic perspective view of the cam assembly and the sliding abutment block.

Fig. 5 is a schematic perspective view of the cam assembly, the sliding abutting block, the lock catch and the positioning rod.

Fig. 6 is a schematic view of a three-dimensional structure of the cam assembly, the sliding abutting block, the lock catch, the positioning rod and the unlocking slide block.

Fig. 7 is a schematic perspective view of the cam assembly, the sliding abutment block and the lever.

Fig. 8 is a front view of the internal structure of the door lock when the door hook is not inserted.

Fig. 9 is a front view of the internal structure of the door lock when the door hook is removed.

Figure 10 is a front view of the internal structure of the door lock with the hook locked in the door lock.

Description of reference numerals:

1. a base; 2. a cam assembly; 3. locking; 4. a cam body; 5. a cam assist; 6. a rotating shaft; 7. a bayonet; 8. a stud; 9. adsorbing the elastic member; 10. sliding the abutting block; 11. a sliding surface; 12. a vertical plane; 13. a locking structure; 14. positioning a rod; 15. unlocking the slide block; 16. a twist-joint structure; 17. a lever; 18. an abutting surface; 19. clamping into the surface; 20. a spring fixing piece; 21. a first elastic member; 22. a protruding block; 23. an inclined surface; 24. a second elastic member; 25. a door hook.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment provides a specific implementation manner of a pressing type door lock, as shown in fig. 1, the pressing type door lock includes: base 1, cam assembly 2 and latch 3. The cam module 2 and the lock catch 3 are both arranged in the base 1, the cam module 2 is rotatably arranged in the base 1, and when the cam module 2 rotates in the base 1 to a locking position, the cam module can be locked through the lock catch 3.

As shown in fig. 2 and 3, the cam module 2 includes: the cam body 4 is rotatably connected to the base 1 through a rotating shaft 6 and is provided with a bayonet 7 for clamping the door hook 25; the cam auxiliary part 5 is connected to the cam body 4 in a sliding mode through a bolt 8, and the sliding direction of the bolt 8 is located on the outer side of the tangent line of the rotating shaft 6; between the cam body 4 and the cam aid 5, an elastic suction member 9 is connected on a sliding path of the stud 8, and a biasing force of the elastic suction member 9 is used for keeping the cam body 4 and the cam aid 5 away from each other; thus, when the cam body 4 and the cam assist 5 approach each other, the cam assist 5 can be caused to drive the cam body 4 to rotate about the rotation shaft 6 by the suction elastic force.

The cam component 2 is connected with the base 1 through a torsion spring, namely the torsion spring is sleeved on a rotating shaft 6 of the cam component 2 in a conventional mode, one end of the torsion spring is connected with the cam component 2, and the other end of the torsion spring is connected with the base 1; the torsion spring has a biasing force that keeps the cam assembly 2 rotating in the unlocking direction when the cam assembly 2 is in the locked position.

As shown in fig. 4, a sliding abutment block 10 is slidably and elastically connected in the base 1, the sliding abutment block 10 is connected to the base 1 by a slider elastic member, and the sliding abutment block 10 is horizontally disposed at the rear of the cam assembly 2, i.e., at a side away from the cam assembly 2, for driving the sliding abutment block 10 to move toward the cam assembly 2. The sliding abutment block 10 has, on the side facing the cam module 2, a sliding surface 11 for pushing against the bolt 8 before the rotation of the cam module 2 to the locking position and a vertical surface 12 for blocking the bolt 8 after the rotation of the cam module 2 to the locking position. During the rotation of the cam module 2 towards the locking position driven by the door hook 25, when the cam module 2 is rotated to a predetermined position before the locking position, the stud 8 collides with the sliding surface 11, and the stud 8 passes the sliding surface 11 and reaches the rear of the vertical surface 12, so that it can be caught on the vertical surface 12.

As shown in fig. 5, one end of the lock catch 3 has a locking structure 13, and the other end is connected with a positioning rod 14; one end of the positioning rod 14 is rotatably connected with the base 1, and the other end of the positioning rod is connected with the lock catch 3 through a twisting structure 16; the twist-on structure 16 allows the latch 3 to move back and forth, swing left and right, and swing up and down in the direction of the cam assembly 2.

As shown in fig. 6, an unlocking slide block 15 is slidably disposed in the base 1, one end of the unlocking slide block 15 is connected with an electromagnetic driving device of a door lock, and the other end is connected with the middle part of the lock catch 3; the unlocking slide block 15 is driven by the driving device to push the lock catch 3 to swing in the left-right direction, i.e. the sliding direction of the unlocking slide block 15, towards the direction away from the cam assembly 2.

As shown in fig. 7, a lever 17 is rotatably connected in the base 1, and the lever 17 has an abutment surface 18 for blocking the cam module 2 from rotating in the unlocking direction. The abutment surface 18 is a ramp surface adapted to cooperate with a snap-in surface 19 of the upper catch portion of the cam module 2. The abutment surface 18 is parallel to the snap-in surface 19 and thus abuts below the snap-in surface 19 when the cam module 2 is in the locked position; further, since the abutment surface 18 is a slope, the force of locking the cam module 2 by the lever 17 can be increased, and the cam module 2 is less likely to be turned over when the cam module 2 is locked.

As shown in fig. 8, a spring fixing piece 20 is connected to the base 1 by insertion, a first elastic piece 21 is connected between the spring fixing piece 20 and the positioning rod 14, and the first elastic piece 21 has a biasing force that deflects the positioning rod 14 in a direction away from the cam module 2.

As shown in fig. 9, a protruding block 22 is provided above the spring fixing plate 20, the protruding block 22 is in sliding contact with the bottom of the latch 3, a contact surface in sliding fit with the protruding block 22 is provided at the bottom of the latch 3, and the contact surface is provided with an inclined surface 23; when the latch 3 moves forward toward the cam assembly 2, the protrusion 22 slides along the contact surface of the latch 3 toward the inclined surface 23, thereby lifting the latch 3 upward and tilting the latch 3. In addition, as an alternative embodiment, the projecting block 22 may also be provided on other parts of the base 1.

Application method

As shown in fig. 8, the door hook 25 is not inserted into the push type door lock, and the door lock is in a free state. At this time, the bayonet 7 of the cam component 2 faces downward, namely, the direction of the door hook 25 under the action of the torsion spring; the lever 17 is located on the side of the bayonet opening 7 of the cam module 2 and is intended to engage with the snap-in surface 19 of the upper snap-in part of the cam module 2. The latch 3 is kept horizontal at this time, and the rear end thereof is connected to the positioning rod 14 by a kink structure.

As shown in fig. 10, after the door hook 25 is inserted into the push-type door lock, the door lock is in a locked state, at this time, the door hook 25 is inserted into the bayonet 7 of the cam assembly 2, the cam assembly 2 is driven to rotate upward by the door hook 25, the snap-in surface 19 of the upper snap portion of the cam assembly 2 is brought into contact with the lever 17, and the cam assembly 2 is locked at this position; and above the cam member 2, the latch 3 locks the cam member 2 by the latch structure 13. Behind the latch 3, a positioning rod 14 is connected to the latch 3 by a twist-joint structure 16, and the positioning rod 14 is pushed against a state of pulling the latch 3 rearward by a spring fixing piece 20 and a first elastic piece 21.

As shown in fig. 9, when the door hook 25 is pulled out from the push type door lock, the door lock releases the locking of the door hook 25 by the child lock function, and at this time, the cam assembly 2 is driven to rotate when the door hook 25 is forcibly pulled out, and the lever 17 is pushed by the cam assembly 2 to rotate, and the abutment with the lever 17 is released; on the other hand, above the cam assembly 2, the latch 3 moves forward along with the cam assembly 2 under the cooperation of the locking structure 13, that is, moves laterally toward the rotation direction of the cam assembly 2, and during the forward movement of the latch 3, the inclined surface 23 below the latch 3 slides along the protruding block 22 of the spring fixing piece 20, so that the end of the latch 3 having the locking structure 13 is tilted upward, thereby releasing the locking of the locking structure 13 on the cam assembly 2, and enabling the cam assembly 2 to be unlocked and turned over smoothly.

Example 2

The present embodiment provides a washing machine having a door to which the push type door lock according to any of embodiments 1 is mounted.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. Push type lock includes:

a base (1);

a cam assembly (2) rotatably mounted within the base (1);

one end of the lock catch (3) is provided with a locking structure (13), and the other end is connected with the positioning rod (14);

the device is characterized in that one end of the positioning rod (14) is rotatably connected with the base (1), and the other end of the positioning rod is connected with the lock catch (3) through a twisting structure (16); the twisting structure (16) allows the lock catch (3) to move back and forth, swing left and right and swing up and down towards the cam component (2);

further comprising: and a first elastic member (21) connected between the base (1) and the positioning rod (14), and having a biasing force that deflects the positioning rod (14) in a direction away from the cam module (2).

2. The touch-type door lock of claim 1, further comprising:

and the second elastic element (24) is connected between the base (1) and the lock catch (3) and has biasing force for deflecting one end of the lock catch (3) with the locking structure (13) towards the direction close to the cam assembly (2).

3. The touch-type door lock of claim 1, further comprising:

and a lever (17) rotatably connected in the base (1) and having an abutment surface (18) for blocking the cam assembly (2) from rotating in the unlocking direction.

4. The touch-type door lock according to claim 3, characterized in that the abutment surface (18) is adapted to cooperate with a snap-in surface (19) of the upper catch of the cam assembly (2).

5. The touch-type door lock according to claim 4, characterized in that the abutment surface (18) is a ramp surface, the abutment surface (18) being at least partially parallel to the snap-in surface (19) when the cam assembly (2) is in the locking position.

6. The touch-type door lock of claim 1, further comprising:

the protruding block (22) is fixedly arranged on the base (1) and is positioned below the lock catch (3);

the bottom of the lock catch (3) is provided with a contact surface in sliding fit with the protruding block (22), and the contact surface is provided with an inclined surface (23).

7. The touch-type door lock of claim 6, further comprising:

the spring fixing piece (20) is connected to the base (1) in an inserting mode and is opposite to the positioning rod (14);

the protruding block (22) is connected to the spring fixing piece (20).

8. The touch-type door lock of claim 1, further comprising:

the unlocking slide block (15) is slidably arranged in the base (1) and is connected with the middle of the lock catch (3), and the lock catch (3) can be pushed to swing towards the direction far away from the cam component (2) along the left-right direction by the driving of the driving device.

9. The touch-type door lock of claim 1, wherein the cam assembly (2) comprises:

the cam body (4) is rotatably connected to the base (1) through a rotating shaft (6) and is provided with a bayonet (7) for clamping the door hook (25);

the cam auxiliary part (5) is connected to the cam body (4) in a sliding mode through a bolt column (8), and the sliding direction of the bolt column (8) is located on the outer side of the tangent line of the rotating shaft (6);

an adsorption elastic member (9) which is connected to the cam body (4) and the cam auxiliary (5), respectively, and has a biasing force for keeping the cam body (4) and the cam auxiliary (5) away from each other;

and a torsion spring connected between the cam assembly (2) and the base (1), and having a biasing force that keeps the cam assembly (2) rotating in an unlocking direction when the cam assembly (2) is in a locked position.

10. The touch-type door lock of claim 9, further comprising:

a sliding abutment block (10) resiliently slidably connected to the base (1) and having a sliding surface (11) for urging against the stud (8) before the cam assembly (2) is rotated to the locking position, and a vertical surface (12) for blocking the stud (8) after the cam assembly (2) is rotated to the locking position;

and a slider elastic member connected between the sliding abutting block (10) and the base (1), and having a biasing force for keeping the sliding abutting block (10) pushed against in the direction of the cam assembly (2).

11. A washing machine having the push type door lock of any one of claims 1 to 10.