Cam, door lock and washing machine with the door lock

Abstract

The cam, door lock and washing machine with the door lock provided by the present invention belong to the technical field of door locks, wherein the cam has an opening for inserting a door hook, and the opening has a first side wall for abutting and cooperating with the door hook when the door hook drives the cam to rotate toward a locked state; the first side wall has a deformable member, and the deformable member is an elastic member, and the deformable member has an avoidance state in which the deformable member is elastically deformed toward the first side wall after being pushed by the door hook; the cam of the present invention is provided with a deformable member on the first side wall of the opening for cooperating with the door hook, and the deformable member can change the opening size of the cam by deformation, so that when the door hook cooperating with the cam is small, the door hook can rotate by pushing the cam by the deformable member, and when the door hook is large, the deformation of the deformable member can prevent the longer door hook from driving the cam to damage the internal parts of the door lock, thereby increasing the adaptation range of the door lock to the door hook.

Description

Technical Field

[0001] The present invention relates to the technical field of door locks, and in particular to a cam, a door lock and a washing machine having the door lock. Background Art

[0002] The door lock for a washing machine uses a cam and a door hook to lock the door of the washing machine. The cam is rotatably arranged in the door lock, and an opening is arranged on the cam. When the door hook is inserted into the opening of the cam, the door hook pushes the cam to rotate, so that the door hook is clamped in the door lock to complete the locking of the door.

[0003] For example, in the double-coil automatic door opening lock disclosed in Chinese patent document CN111549495A, a cam is rotatably connected in the lock housing. When the door hook is inserted into the opening of the cam and the cam is pushed to rotate to a locked state, the cam is locked by the lock catch, thereby locking the door.

[0004] However, in the above solution, the specifications of the door hook and the door lock need to match. This will cause some troubles in replacing the door lock. The user needs to choose a suitable door lock according to the size of the door hook. If the size of the selected door hook is too large, the cam will easily interfere with the internal parts of the door lock after the door hook is inserted into the cam, causing damage; if the size of the selected door hook is too small, the door hook will not be able to push the cam to rotate into place after being inserted into the cam; therefore, the door lock of the prior art brings inconvenience to the user when replacing. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the door lock in the prior art needs to be matched according to the size of the door hook, thereby providing a cam, a door lock and a washing machine with the door lock.

[0006] In order to solve the above technical problems, the present invention provides a cam, which is rotatably arranged in a door lock, and the cam has a locked state for locking a door hook and an unlocked state for releasing the lock of the door hook by rotating in the door lock; the cam has an opening for inserting the door hook, and the opening has a first side wall for abutting and cooperating with the door hook when the door hook drives the cam to rotate toward the locked state;

[0007] The first side wall is provided with a deformable member, the deformable member is an elastic member, and the deformable member has an evasive state in which the deformable member is elastically deformed toward the first side wall after being pushed by the door hook.

[0008] Optionally, the deformable member is connected to the first side wall of the opening as a whole, and there is a gap between the deformable member and the first side wall.

[0009] Optionally, one end of the deformable member close to the door hook is connected to the first side wall.

[0010] Optionally, one end of the deformable member away from the door hook is disconnected from the first side wall.

[0011] Optionally, the surface of the deformable member for cooperating with the door hook is an arc-shaped surface convex toward the center direction of the opening.

[0012] Optionally, the opening further comprises a second side wall for abutting and cooperating with the door hook when the door hook driving cam rotates toward the unlocked state, and the surface of the second side wall for cooperating with the door hook is an arc-shaped surface recessed toward a direction away from the center of the opening.

[0013] The present invention also provides a door lock, comprising: a cam according to any one of the above schemes, wherein the cam is rotatably connected in the door lock.

[0014] Optionally, the door lock has a lock catch for locking the cam in a locked state, and the door lock also has a biasing member connected to the cam, and the biasing member has an elastic force that drives the cam to rotate from the locked state to the unlocked state.

[0015] Optionally, the elastic resistance of the deformable member during elastic deformation is greater than the elastic resistance of the biasing member that needs to be overcome when the cam rotates from the unlocked state toward the locked state.

[0016] The present invention further provides a washing machine, comprising: a door hook and a door lock according to any one of the above solutions.

[0017] The technical solution of the present invention has the following advantages:

[0018] 1. The cam provided by the present invention is provided with a deformable part on the first side wall of the opening for cooperating with the door hook. The deformable part can change the opening size of the cam by deformation, so that when the door hook cooperating with the cam is small, the door hook can rotate by pushing the cam through the deformable part, and when the door hook is large, the deformation of the deformable part can prevent the longer door hook from driving the cam to damage the internal parts of the door lock, thereby increasing the adaptability range of the door lock to the door hook; in addition, since the cam of the present application has the deformable part, when the door hook collides toward the opening of the cam, the door hook first contacts the deformable part, and the elastic deformation of the deformable part can buffer part of the impact force of the door hook, thereby increasing the service life of the door lock.

[0019] 2. The door lock provided by the present invention can be adapted to a variety of door hook specifications and can be used with door hooks of different sizes to lock the door.

[0020] 3. The door lock or door hook of the washing machine provided by the present invention can be replaced within a larger adaptation range, so that it is not necessary to require the door hook and the door lock to be fully adapted, thereby alleviating user inconvenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a front view of the cam provided in the embodiment of the present invention in the unlocked state.

[0023] Figure 2 for Figure 1 Front view of the door hook at the moment of impact towards the cam.

[0024] Figure 3 It is a stereoscopic view of a cam in an unlocked state provided in an embodiment of the present invention.

[0025] Figure 4 It is a stereoscopic view of a cam in a locked state provided in an embodiment of the present invention.

[0026] Figure 5 It is a three-dimensional diagram of a door lock provided in an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Cam; 2. Door hook; 3. Lock catch; 4. Rotating shaft; 5. Opening; 6. First side wall; 7. Deformation piece; 8. Second side wall; 9. Door lock. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] Example 1

[0034] This embodiment provides a cam 1, which is rotatably arranged in a door lock 9. The cam 1 rotates in the door lock 9 and has the following features: Figure 3 The unlocked state of releasing the lock of the door hook 2 shown in FIG. Figure 4 The door hook 2 is locked as shown. Figure 4 As shown, when the cam 1 is in the locked state, the lock catch 3 in the door lock 9 engages with the cam 1 to keep the cam 1 in this state. In addition, the cam 1 is rotatably connected to the door lock 9 via a rotating shaft 4, and a torsion spring is sleeved on the rotating shaft 4. The torsion spring has an elastic force that allows the cam 1 to rotate from the locked state to the unlocked state; thus, when the lock catch 3 in the door lock 9 engages with the cam 1, the cam 1 can automatically rotate from the locked state to the unlocked state under the drive of the torsion spring. In addition, as an alternative embodiment, the torsion spring can be replaced by other biasing members, for example, a tension spring hooked between the lock housing and the cam 1.

[0035] like Figure 1 , Figure 2 As shown, the cam 1 provided in this embodiment has an opening 5 for inserting the door hook 2, and the opening 5 has a first side wall 6 for abutting and cooperating with the door hook 2 when the door hook 2 drives the cam 1 to rotate toward the locked state; when the door hook 2 strikes toward the inside of the cam 1, the top of the door hook 2 first contacts the first side wall 6. The first side wall 6 has a deformable member 7, which is an elastic member connected to the first side wall 6. When the door hook 2 strikes toward the first side wall 6, it first contacts the deformable member 7, and the deformable member 7 has an avoidance state in which it is elastically deformed toward the first side wall 6 after being pushed by the door hook 2.

[0036] like Figure 1 , Figure 2As shown, in the cam 1 provided in this embodiment, the deformable member 7 is connected to the first side wall 6 of the opening 5 as a whole, and is preferably integrally formed. Alternatively, it may be a structure connected as a whole by post-processing. There is a gap between the deformable member 7 and the first side wall 6, and the end of the deformable member 7 close to the door hook 2 is connected to the first side wall 6, and the end of the deformable member 7 away from the door hook 2 is disconnected from the first side wall 6. When the door hook 2 hits the deformable member 7, the deformable member 7 contacts the disconnected end of the first side wall 6 of the cam 1, and then the impact force of the door hook 2 is offset by the elasticity of the deformable member 7, and the requirement of adapting to the length of the door hook 2 is met. In addition, as an alternative embodiment, no gap may be set between the deformable member 7 and the first side wall 6 of the door hook 2, and the deformable member 7 may also be made of a polymer elastomer, and the impact force of the door hook 2 is buffered by the elastic deformation of the deformable member 7 itself.

[0037] like Figure 1 , Figure 2 As shown, in the cam 1 provided in this embodiment, the surface of the deformable member 7 used to cooperate with the door hook 2 is a curved surface convex toward the center direction of the opening 5, and the relative slidability between the door hook 2 and the deformable member 7 can be improved by the convex curved surface. In addition, the opening 5 of the cam 1 is also provided with a second side wall 8. When the door hook 2 drives the cam 1 to rotate toward the unlocked state, the second side wall 8 is used to abut and cooperate with the door hook 2. The surface of the second side wall 8 used to cooperate with the door hook 2 is a concave curved surface facing away from the center direction of the opening 5. The concave curved surface can ensure effective engagement with the door hook 2, thereby facilitating the locking of the door hook 2. In addition, when the door hook 2 drives the cam 1 to rotate toward the unlocked state, the concave curved surface can improve the relative slidability between the door hook 2 and the second side wall 8.

[0038] The cam 1 provided in the present embodiment is provided with a deformable member 7 on the first side wall 6 of the opening 5 for cooperating with the door hook 2. The deformable member 7 can change the size of the opening 5 of the cam 1 by deformation, so that when the door hook 2 cooperating with the cam 1 is small, the door hook 2 can be rotated by pushing the cam 1 through the deformable member 7, and when the door hook 2 is large, the deformation of the deformable member 7 can prevent the longer door hook 2 from driving the cam 1 to damage the parts inside the door lock 9, thereby increasing the adaptation range of the door lock 9 to the door hook 2; in addition, since the cam 1 of the present application has the deformable member 7, when the door hook 2 collides toward the opening 5 of the cam 1, the door hook 2 first contacts the deformable member 7, and the elastic deformation of the deformable member 7 can buffer part of the impact force of the door hook 2, thereby increasing the service life of the door lock 9.

[0039] Example 2

[0040] like Figure 5As shown, this embodiment also provides a door lock 9, including the cam 1 described in Embodiment 1, and the cam 1 is rotatably connected in the door lock 9.

[0041] like Figure 4 As shown, the door lock 9 has a lock catch 3 for locking the cam 1 in a locked state, and the door lock 9 also has a biasing member connected to the cam 1, and the biasing member has an elastic force driving the cam 1 to rotate from the locked state to the unlocked state. Specifically, the biasing member can be sleeved on the rotating shaft 4 for rotating the cam 1, and the biasing member is a torsion spring, through which the cam 1 can be rotated from the locked state to the unlocked state. That is to say, when the cam 1 is in the locked state in the door lock 9, the torsion spring has a biasing force that rotates the cam 1 toward the unlocked state.

[0042] In addition, in order to ensure that the door hook 2 with a smaller size can push the cam 1, the elastic resistance of the deformable member 7 of the cam 1 to elastic deformation is set to be greater than the elastic resistance of the biasing member that needs to be overcome when the cam 1 rotates from the unlocked state to the locked state. In this way, when the door hook 2 with a smaller size first contacts the deformable member 7, the cam 1 can be driven to rotate first, and the cam 1 will not be unable to reach the locked state due to the deformation of the deformable member 7. Therefore, the door lock 9 can adapt to door hooks 2 with a wider range of specifications.

[0043] Example 3

[0044] This embodiment provides a washing machine, comprising: a door hook 2 and the door lock 9 described in Embodiment 2, wherein the door hook 2 can be installed on a door panel, and the door lock 9 is installed on a machine body opposite to the door hook 2.

[0045] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the present invention.

Claims

1. A cam, rotatably arranged in a door lock, wherein the cam, by rotating in the door lock, has a locked state for locking a door hook (2) and an unlocked state for releasing the door hook (2); the cam has an opening (5) for inserting the door hook (2), and the opening (5) has a first side wall (6) for abutting and cooperating with the door hook (2) when the door hook (2) drives the cam to rotate toward the locked state; It is characterized in that The first side wall (6) has a deformable member (7), the deformable member (7) being an elastic member, and the deformable member (7) having an avoidance state in which it is elastically deformed toward the first side wall (6) after being pushed by the door hook (2).

2. The cam according to claim 1, characterized in that: The deformable member (7) is integrally connected to the first side wall (6) of the opening (5), and a gap is provided between the deformable member (7) and the first side wall (6).

3. The cam according to claim 2, characterized in that: One end of the deformable member (7) close to the door hook (2) is connected to the first side wall (6).

4. The cam according to claim 3, characterized in that: One end of the deformable member (7) away from the door hook (2) is disconnected from the first side wall (6).

5. The cam according to any one of claims 1 to 4, characterized in that: The surface of the deformable member (7) used to cooperate with the door hook (2) is an arc-shaped surface convex toward the center direction of the opening (5).

6. The cam according to any one of claims 1 to 4, characterized in that: The opening (5) further comprises a second side wall (8) for abutting and cooperating with the door hook (2) when the door hook (2) drives the cam to rotate towards an unlocked state, and the surface of the second side wall (8) for cooperating with the door hook (2) is an arc-shaped surface that is recessed in a direction away from the center of the opening (5).

7. A door lock, characterized in that: include: The cam according to any one of claims 1 to 6 is rotatably connected in the door lock.

8. The door lock according to claim 7, characterized in that: The door lock has a lock catch (3) for locking the cam in a locked state, and the door lock also has a biasing member connected to the cam, wherein the biasing member has an elastic force for driving the cam to rotate from the locked state to the unlocked state.

9. The door lock according to claim 8, characterized in that: The elastic resistance of the deformable member (7) during elastic deformation is greater than the elastic resistance of the biasing member that needs to be overcome when the cam rotates from an unlocked state to a locked state.

10. A washing machine, characterized in that: include: A door hook (2) and a door lock according to any one of claims 7 to 9.

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