CN114991591B - Lock catch assembly, door body and refrigerator - Google Patents

Abstract

The invention provides a lock catch assembly, a door body and a refrigerator, wherein the lock catch assembly comprises: the base is internally provided with a lock hook; the lock catch is inserted into the base and locked with the lock hook; the damping device comprises a fixed part and a sliding part which are connected in a sliding way, the sliding part is fixedly connected with the lock hook, and the lock hook drives the sliding part to slide relative to the fixed part. The latch assembly comprises a damping device, a sliding part of the damping device is connected with a latch hook of the latch assembly, the latch hook drives the sliding part to slide relative to the fixing part, so that acting force exerted on the latch hook by the latch is absorbed, rotation of the latch hook is restrained, the latch hook and the latch are prevented from being separated, tolerance of the latch assembly to external force is improved, and stability of a locking state is improved.

Description

Lock catch assembly, door body and refrigerator

Technical Field

The invention relates to a lock catch assembly, a door body and a refrigerator with the door body.

Background

Along with the improvement of living standard, the requirements of users on the accommodation requirement, energy conservation and fresh keeping of the refrigerator are gradually improved. Most of the refrigerators in the market at present are single-door or side-by-side refrigerators, which have limited capacity and have low efficiency due to a large loss of cool air when the refrigerator door is opened, so that the door-in-door refrigerators are appeared.

The door-in-door refrigerator comprises a refrigerator body, wherein a main door and an auxiliary door are arranged in front of the refrigerator body, the main door is positioned between the auxiliary door and the refrigerator body, and the auxiliary door is in attraction with the main door through a magnetic strip with a door seal. The main door is also provided with an independent storage space, the auxiliary door is closed at the front side of the storage space, and the auxiliary door is opened to take and place common articles, so that the problem of high energy consumption caused by high switching frequency of the main door can be effectively reduced.

The prior door-in-door refrigerator adopts a push type mechanical lock, which comprises a base and a lock catch, wherein the base is fixed on one side of a main door body, the lock catch is fixed on one side of an auxiliary door body, the auxiliary door is pushed to move towards the main door, the lock catch is inserted into the base, the lock catch is pushed to the lock catch in the base, and after the lock catch is released, the lock catch and the lock catch are mutually locked under the action of an elastic piece. When unlocking, the auxiliary door is pressed, the lock catch pushes the lock hook to rotate, and the lock catch and the lock hook are unlocked. Such a mechanical lock upon pressing makes the opening and closing operation of the sub-door relative to the main door simple.

However, in the use process of the refrigerator with the door in the door, in the process of closing the main door, the main door moves towards the refrigerator body, the auxiliary door has a trend of moving towards the main door due to the inertia effect, at the moment, the auxiliary door is influenced by the inertia effect, the lock catch pushes against the lock hook, the lock catch is separated from the lock hook, the mechanical lock is invalid when the auxiliary door is opened and pressed, and great inconvenience is caused to the use of a user.

Disclosure of Invention

The invention solves the problem of how to avoid the problem that the mechanical lock between the small door and the large door is invalid and the small door is opened due to the inertia caused by closing the large door in the door body of the door-in-door structure.

In order to solve the above problems, the present invention provides a latch assembly, which is characterized in that the latch assembly includes: the base is internally provided with a lock hook; the lock catch is inserted into the base and locked with the lock hook; the damping device comprises a fixed part and a sliding part which are connected in a sliding way, the sliding part is fixedly connected with the lock hook, and the lock hook drives the sliding part to slide relative to the fixed part.

As an alternative technical scheme, the fixing part comprises a fixing block; the sliding portion comprises a sleeve, the sleeve comprising a cavity; the fixed block is arranged in the cavity; the locking hook drives the sleeve to slide relative to the fixed block in a direction away from the lock catch.

As an alternative solution, the sleeve includes a closed end and an open end, the closed end and the open end being opposite; the sleeve further comprises a sealing cover which is sealed at the opening end so that the cavity forms a sealing cavity; the fixed block divides the sealed cavity into a first cavity and a second cavity, and comprises a through hole which enables the first cavity and the second cavity to be mutually communicated.

As an alternative solution, the first chamber and the second chamber are filled with buffer liquid respectively.

Alternatively, the buffer liquid includes water, silicone oil, castor oil, mechanical oil, diesel oil or engine oil.

As an alternative technical scheme, a groove is formed in the outer wall of the fixed block, and a first sealing ring is embedded in the groove.

As an alternative technical scheme, the sealing cover is provided with an opening; the fixed part also comprises a fixed shaft, the fixed shaft is connected with the fixed block, and the fixed end of the fixed shaft penetrates out of the opening hole and stretches out towards the direction away from the sealing cover.

As an optional technical scheme, the device further comprises an elastic piece, wherein the elastic piece is arranged in the second cavity, and two opposite ends of the elastic piece are respectively contacted with the closed end and the fixed block.

The invention also provides a door body which adopts a door-in-door structure, and comprises a first door body and a second door body, wherein the second door body is rotatably connected with the first door body; the lock catch assembly is further arranged between the first door body and the second door body.

The invention also provides a refrigerator, which comprises a refrigerator body and a door body, wherein the door body can be opened or closed relative to the refrigerator body, and the door body is the door body.

Compared with the prior art, the lock catch assembly, the door body and the refrigerator are provided by the invention, the lock catch assembly comprises the damping device, the sliding part of the damping device is connected with the lock hook of the lock catch assembly, and the lock hook drives the sliding part to slide relative to the fixed part so as to absorb the acting force exerted on the lock hook by the lock catch, inhibit the rotation of the lock hook, avoid the separation of the lock hook and the lock catch, improve the tolerance of the lock catch assembly to external force and improve the stability of a locking state.

The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a locking state of a latch assembly according to an embodiment of the invention.

Fig. 2 and 3 are schematic views illustrating an unlocked state of the latch assembly according to an embodiment of the present invention.

FIG. 4 is a schematic view of a stop in the latch assembly.

Fig. 5 is a schematic cross-sectional view along the dashed line shown in fig. 4.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

As shown in fig. 1 to 5, the present invention provides a latch assembly 100, including: the base 10, the lock catch 20 and the damping device 30, wherein the lock hook 11 is arranged in the base 10; the lock catch 20 is inserted into the base 10 to be locked with the lock hook 11; the damping device 30 includes a fixing portion 33 and a sliding portion 31 that are slidably connected, the sliding portion 31 is fixedly connected to the latch hook 11, and the latch hook 11 drives the sliding portion 31 to slide relative to the fixing portion 33.

In this embodiment, the latch hook 11 is rotatably disposed in the base 10, the lock catch 20 is inserted from the opening 13 on the front housing 12 of the base 10, the end of the latch tongue 21 of the lock catch 20 pushes against the first arm 113 of the latch hook 11 to rotate the latch hook 11 clockwise, at this time, the second arm 112 of the latch hook 11 is snapped into the latch hole 22 of the latch tongue 21, and the latch hook 11 and the latch tongue 21 are locked. Wherein the end of the latch 21 is retained in the gap 113 between the first arm 113 and the second arm 112.

Preferably, the second arm 112 is located on the front side of the first arm 111, i.e. the second arm 112 is close to the latch 20 and the first arm 111 is far from the latch 20. The lower end of the first arm 111 protrudes from the lower end of the second arm 112, so that the notch 113 forms an avoidance space 114 towards one side of the latch 20, and the avoidance space 114 is convenient for the latch 21 of the latch 20 to push against the first arm 111.

When the latch assembly 100 is unlocked, the latch 20 is pressed, the latch tongue 21 pushes against the first arm 111, the latch hook 11 rotates clockwise, and the latch hook 11 provides a counterclockwise force under the action of the elastic member to release the second arm 112 from the latch hole 22 of the latch tongue 21, so that the latch 20 and the latch hook 11 are unlocked.

When the latch assembly 100 is applied to a door body of a door-in-door structure, the base 10 is assembled at one side of a large door, the latch 20 is assembled at one side of a small door, and the latch hook 11 and the latch tongue 21 are locked to each other when the small door is locked to the large door. At this time, the inertial force caused by closing the gate acts on the small gate, which corresponds to the pressing of the small gate, at this time, the latch 21 pushes against the first arm 111 of the latch 11 to rotate the latch 11, and since the latch 11 is connected to the sliding portion 31 of the damping device 30, the inertial force that urges the latch 11 to rotate is used to push against the sliding portion 31 to slide relative to the fixed portion 32, so that the rotation trend of the latch 11 is inhibited, and the problem that the latch 21 is disengaged from the notch 113 of the latch 11 due to the rotation of the latch 11 is avoided.

In other words, in the latch assembly 100 provided by the present invention, the sliding portion 31 of the damping device 30 slides relative to the fixed portion 32 to provide a resistance to consume the inertial force exerted on the latch 20, so as to avoid the problem that the latch 21 and the latch hook 11 are separated due to the inertial force generated on the latch 20 when closing the gate, and the latch assembly 100 fails.

It should be noted that, the latch assembly 100 provided by the present invention is not limited to be applied to a door body of a door-in-door structure, and may be applied between a door body and a box body, so as to avoid the problem that the latch and the latch are separated due to external impact, and the latch assembly 100 fails.

With continued reference to fig. 1-5, the fixed portion 32 includes a fixed block 321, the sliding portion 31 includes a sleeve 311, and the sleeve 311 includes a cavity 301; the fixed block 321 is located in the cavity 301.

In this embodiment, one end of the sleeve 311 is fixedly coupled to the latch hook 11, and preferably, the sleeve 311 is connected to a side of the first arm 111 away from the latch 20; the fixing portion 32 is fixed to a door body or other member to be fixed. After the lock catch 20 is stressed, the lock tongue 21 pushes against the first arm 111, so that the lock hook 11 drives the sleeve 311 to slide relative to the fixed block 321, and further, the rotation of the lock hook 11 is inhibited, and the problem that the lock hook 11 and the lock tongue 21 are separated is avoided. That is, the sleeve 311 slides relative to the fixed block 321 in a direction away from the lock catch 20 to generate resistance to inhibit the rotation trend of the lock hook 11, so as to overcome the problem that the lock hook assembly 100 is disabled due to external force.

In a preferred embodiment, the sleeve 311 includes a closed end 3111 and an open end 3112, the closed end 3111 is connected to the latch 11, and preferably, the sleeve 311 and the latch 11 may be integrally formed.

As shown in fig. 5, the sleeve 311 further includes a cover 312, and the cover 312 is upwind of the open end 312, so that the cavity 301 forms a sealed cavity, wherein the sealed cavity is divided into a first chamber 302 and a second chamber 303 by a fixing block 321, and the fixing block 321 includes a through hole (not shown) which communicates with the first chamber 302 and the second chamber 303. When inertial force or other external force acts on the lock catch 20, the lock tongue 21 pushes against the first arm 111 of the lock hook 11, the lock hook 11 drives the sleeve 311 to slide, and air in the second chamber 303 is extruded into the first chamber 302 through the through hole on the fixed block 321, so as to provide resistance to inhibit the rotation trend of the lock hook 11, and ensure that the lock hook 11 and the lock tongue 21 cannot be separated to unlock.

In this embodiment, the sleeve 311 is, for example, a cylinder with one end open; the fixing block 321 is, for example, a cylinder, and the cylinder is provided with a through hole along the axial direction, and the through hole can be a round hole penetrating through the cylinder body along the axial direction; the cover 312 is a sealing plug made of an elastic material such as a rubber stopper.

In a preferred embodiment, the inner diameter of the cylinder is equal to the outer diameter of the cylinder so that there is a close fit between the outer wall of the cylinder and the inner wall of the cylinder.

In a preferred embodiment, a groove is formed on the outer wall of the fixed block 321, the first sealing ring 33 is embedded in the groove, and the first sealing ring 33 elastically abuts against the inner wall of the sleeve 311, so that, on one hand, the first chamber 302 and the second chamber 303 can be relatively sealed, and on the other hand, the sliding resistance of the sleeve 311 is increased, so as to avoid unnecessary displacement of the fixed block 321.

In a preferred embodiment, a similar groove is formed on the outer wall of the sealing cap 312, the second sealing ring 34 is embedded in the groove, the second sealing ring 34 elastically abuts against the inner wall of the sleeve 311, so that the sealing performance of the sealing cavity is improved, and meanwhile, the sliding resistance of the sleeve 311 is increased, and the sealing cap 312 can be limited to avoid sliding. Preferably, the second seal 34 is disposed on the cover 312 near the open end 3112.

With continued reference to fig. 5, to secure the securing block 321, a securing shaft 322 extends from the securing block 321, the securing shaft 322 extends toward the cover 312, passes through an opening in the cover 321, and extends out from the side of the cover 321 away from the closed end 3111. Preferably, the fixed end 323 of the fixed shaft 322 is provided with threads, and is assembled to a to-be-fixed member, such as a door body, a box body, etc., in a threaded locking and fixing manner.

In this embodiment, the sleeve 311 slides along the fixed shaft 322 along with the sleeve 311 during the sliding of the sleeve 311 relative to the fixed block 321, that is, the sleeve 311 and the cover 321 slide along the fixed block 321 and the stakeholder shaft 322.

In a preferred embodiment, the fixed shaft 322 and the fixed block 321 are integrally formed.

In addition, in order to increase the amount of resistance provided by the damping device 30, the latch assembly 100 is resistant to external forces. In one embodiment of the present invention, the first chamber 302 and the second chamber 303 are filled with a buffer liquid, and the sliding resistance is further increased by the buffer liquid.

In a preferred embodiment, the buffer liquid comprises water, silicone oil, castor oil, mechanical oil, diesel oil or engine oil.

In the sliding process of the sleeve 311 and the cover 312, the buffer liquid in the second chamber 303 is extruded into the first chamber 302, and the process of extruding the buffer liquid can absorb the acting force of the latch bolt 21 on the first arm 111 of the latch hook 11, so as to effectively overcome the unlocking condition of the latch hook 11 and the latch bolt 21.

In addition, experiments prove that when the buffer liquid is oily liquid, the latch assembly 100 is kept in a locked state under the action of an external force of 25±5N (newton), and the latch hook 11 and the latch tongue 21 cannot be separated. Therefore, when the latch assembly 100 including the buffer liquid is applied to the door body of the door-in-door structure, the inertial force generated by closing the large door is often less than 25±5n, so that the problem that the small door is opened due to the inertial force and the latch assembly fails can be overcome.

The present invention also provides a door body (not shown), for example, a door-in-door structure, which includes a first door body and a second door body rotatably connected to the first door body, a base 10 of a latch assembly is disposed on the first door body, and a latch 20 of the latch assembly 100 is disposed on the second door body, wherein the latch assembly is the latch assembly 100 as described above, and further includes a damping device 30, in which the sliding portion 31 slides relative to the fixed portion 32 and provides a resistance force, so as to overcome the problem that the second door body is opened and the latch assembly 100 fails due to inertia force applied to the second door body when the first door body is closed.

The invention also provides a refrigerator which comprises a refrigerator body and a door body, wherein the door body is of a door-in-door structure, and the door is the door body.

In summary, the invention provides a latch assembly, a door body and a refrigerator, wherein the latch assembly comprises a damping device, a sliding part of the damping device is connected with a latch hook of the latch assembly, and the latch hook drives the sliding part to slide relative to a fixed part so as to absorb acting force exerted on the latch hook by a latch, inhibit rotation of the latch hook, avoid separation of the latch hook and the latch, improve tolerance of the latch assembly to external force and improve stability of a locking state.

The invention has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of practicing the invention. In addition, the technical features described above in the different embodiments of the present invention may be combined with each other as long as they do not collide with each other. It is to be noted that the present invention is capable of other various embodiments and that various changes and modifications can be made herein by one skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A latch assembly, the latch assembly comprising:

the base is internally provided with a lock hook;

the lock catch is inserted into the base and locked with the lock hook; and

the damping device is used for inhibiting the lock hook from rotating, the damping device comprises a fixing part and a sliding part which are connected in a sliding mode, the sliding part is fixedly connected with the lock hook, and the lock hook drives the sliding part to slide relative to the fixing part.

2. The latch assembly according to claim 1, wherein said securing portion includes a securing block; the sliding portion comprises a sleeve, the sleeve comprising a cavity; the fixed block is arranged in the cavity; the locking hook drives the sleeve to slide relative to the fixed block in a direction away from the lock catch.

3. The latch assembly of claim 2 wherein said sleeve includes a closed end and an open end, said closed end and said open end being opposite; the sleeve further comprises a sealing cover which is sealed at the opening end so that the cavity forms a sealing cavity; the fixed block divides the sealed cavity into a first cavity and a second cavity, and comprises a through hole which enables the first cavity and the second cavity to be mutually communicated.

4. The latch assembly according to claim 3, wherein said first chamber and said second chamber are each filled with a buffer liquid.

5. The latch assembly according to claim 4, wherein said buffer fluid comprises water, silicone oil, castor oil, mechanical oil, diesel or engine oil.

6. A latch assembly according to claim 3, wherein the outer wall of the fixed block is provided with a recess in which the first seal ring is embedded.

7. A latch assembly according to claim 3, wherein said cover is provided with an aperture; the fixed part also comprises a fixed shaft, the fixed shaft is connected with the fixed block, and the fixed end of the fixed shaft penetrates out of the opening hole and stretches out towards the direction away from the sealing cover.

8. A latch assembly according to claim 3, further comprising an elastic member disposed in said second chamber, opposite ends of said elastic member contacting said closed end and said fixed block, respectively.

9. The door body adopts a door-in-door structure and is characterized by comprising a first door body and a second door body, wherein the second door body is rotatably connected with the first door body;

the latch assembly according to any one of claims 1-8 is further provided between the first door body and the second door body.

10. A refrigerator, the refrigerator includes a case and a door body which can be opened or closed with respect to the case, characterized in that,

the door body is the door body according to claim 9.