CN110720768B - Lock Mechanisms for Relatively Movable Objects - Google Patents

Abstract

The present invention relates to a lock mechanism for a relatively movable object, the lock mechanism can be arranged on one of a first object and a second object which are relatively movable. The lock mechanism includes a drive device and a lock. The lock can be driven by the driving device to move from a first position to a second position in a non-rotational manner; when the lock is in one of the first position and the second position, the lock uses to lock the other of the first object and the second object; when the lock is in the other of the first position and the second position, the lock does not lock the first object and the second another of the objects.

Description

Lock Mechanisms for Relatively Movable Objects

technical field

The present invention relates to a lock, in particular to a lock mechanism for relatively movable objects.

Background technique

In general, rail assemblies can be used in home, office or rack systems for electronic equipment. The slide rail assembly includes a first rail and a second rail respectively mounted on a first object and a second object, such as a cabinet and a drawer, so that the drawer can be opposite to the first rail and/or through the second rail The cabinet is opened or closed.

With different demands, sometimes the market or users do not want the second rail (the second object) to be operated from a predetermined position arbitrarily relative to the first rail (the first object) to leave the predetermined position. For example, US Patent Publication No. US8,328,299B2 discloses a drawer slide and lock mechanism. The lock mechanism 104 is an electronic lock. As can be seen from FIG. 1 of this case, the drawer slide rail includes an outer rail 106 and an inner rail 108 . The inner rail 108 may be in a retracted position relative to the outer rail 106 . Among them, the rear end of the inner rail 108 is provided with a pin 116 . On the other hand, the lock mechanism 104 includes a latch receiver 115 , a lever arm 117 and a motor 119 . Wherein, as shown in FIGS. 1 and 2 of this case, the latch receivers 115, 218 can be in a first position, and in the first position, the latch receivers 115, 218 are in a position that can be used to catch the pins 116, 218 of the inner rail 108. The state of 216, as shown in FIG. 3 of the case, once the motors 119, 240, 328 receive an electronic control signal, the motor 328 can drive the lever arm 304 to rotate, so that the top 308 of the lever arm 304 can be linked and pushed against the latch receiver 324 The pin 316 of the inner rail 322 can be locked by rotating from the first position to the second position. According to this configuration, the inner rail 322 can be locked in the collapsed position relative to the outer rail.

Further, the latch receiver 324 and the lever arm 304 of this patent are in a rotationally interlocking manner, and the first spring 326 and the second spring 350 need to exert elastic force respectively to enable the lock mechanism to achieve locking or unlocking function. However, with the consideration of market demands or different structural action modes, sometimes it is not desirable to realize the function of the lock in this configuration of the patent case. Therefore, how to develop a way to lock the movable object in a different way Products with relatively fixed objects and streamlined structures have become an issue that cannot be ignored.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a lock mechanism which can be applied to a relatively movable object.

According to an aspect of the present invention, a lock mechanism is suitable for a first object and a second object that are movable relative to each other, the lock mechanism is arranged on one of the first object and the second object, and the lock mechanism It includes a driving device and a lock. The locking member can be driven by the driving device to linearly move from a first position to a second position; wherein, when the locking member is in one of the first position and the second position, the locking member is used for Lock the other of the first object and the second object; wherein, when the lock is in the other of the first position and the second position, the lock does not lock the first object and the first object The other of the two objects.

Preferably, the lock mechanism further includes an elastic member for providing elastic force to the lock member.

Preferably, the driving device includes a motor, and the lock mechanism further includes a link member connected to the lock member, and the link member can move linearly in response to a rotational driving force provided by the motor.

Preferably, the lock mechanism further includes a drive member connected to a shaft of the motor, and the linkage member can be driven by the drive member.

Preferably, the direction of linear movement of the linkage is substantially perpendicular to the direction of the axis.

Preferably, the lock mechanism includes a casing, and the link member and the casing have mutually matched structural features for guiding the link member to move linearly relative to the casing.

Preferably, the lock mechanism further comprises a manual release feature arranged on one of the link member and the lock member, when the link member does not respond to the rotational driving force provided by the motor, through the manual release feature The lock can be driven from the first position to the second position.

Preferably, the lock mechanism is detachably connected to one of the first object and the second object through the housing.

Preferably, the lock mechanism further includes a fixed seat, and the lock member further includes a contact portion, and the elastic member is arranged between the fixed seat and the contact portion.

Preferably, the lock mechanism further includes a sensor for detecting whether the second object is in a predetermined position relative to the first object.

According to another aspect of the present invention, a lock mechanism is suitable for a first object and a second object, the lock mechanism is arranged on one of the first object and the second object, and the lock mechanism includes a drive device and a lock. The lock can be driven by the driving device to move from a first position to a second position in a non-rotational manner; wherein, when the lock is in one of the first position and the second position, the lock The lock is used to lock the other of the first object and the second object to prevent the second object from moving relative to the first object; wherein, when the lock is in the first position and the second position When the other is the lock, the lock does not lock the other of the first object and the second object, so as to allow the second object to move relative to the first object.

Preferably, the first object and the second object are respectively a first rail and a second rail of a slide rail assembly; or, the first object and the second object are a cabinet and a movable, respectively pieces.

According to another aspect of the present invention, a lock mechanism includes a driving device, a driving member, a locking member, a linking member and an elastic member. The driving device includes a motor; the driving member is connected to a shaft of the motor; the linking member is connected to the locking member; the elastic member is used for providing elastic force to one of the linking member and the locking member, so that the The locking member is maintained in a locking position; wherein, the driving member is used to drive the linking member through a rotational driving force provided by the shaft of the motor, so that the locking member linearly displaces from the locking position and leaves the locking position.

Description of drawings

In order to further illustrate the above-mentioned objects, structural features and effects of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic diagram showing the combination of the lock mechanism according to the first embodiment of the present invention, which can be applied to a slide rail assembly.

FIG. 2 shows an exploded schematic view of the lock mechanism and the slide rail assembly according to the first embodiment of the present invention.

3 is a partial perspective view showing that the lock mechanism according to the first embodiment of the present invention can lock a second rail of the slide rail assembly to prevent the second rail from leaving a predetermined position relative to a first rail.

FIG. 4 is a schematic diagram showing a portion of the second rail of the slide rail assembly that can be locked by the locking mechanism according to the first embodiment of the present invention.

5 is a schematic view showing that the locking mechanism of the first embodiment of the present invention does not lock the portion of the second rail of the slide rail assembly.

6 is a partial perspective view showing that the lock mechanism according to the first embodiment of the present invention does not lock the second rail of the slide rail assembly to allow the second rail to move away from the predetermined position relative to the first rail.

7 is a schematic plan view showing that the lock mechanism according to the first embodiment of the present invention can lock the second rail of the slide rail assembly to keep the second rail at the predetermined position relative to the first rail.

FIG. 8 shows an enlarged schematic view of the area A of FIG. 7 .

9 is a schematic plan view showing that the lock mechanism according to the first embodiment of the present invention does not lock the second rail of the slide rail assembly, so that the second rail is displaced from the predetermined position to another predetermined position relative to the first rail.

FIG. 10 shows an enlarged schematic view of the area A of FIG. 9 .

FIG. 11 is a schematic view showing that the lock mechanism of the first embodiment of the present invention can be manually operated.

FIG. 12 is a schematic diagram showing the application of the slide rail assembly with the locking mechanism according to the first embodiment of the present invention to a cabinet and a drawer of a piece of furniture.

13 is a schematic diagram showing that the lock mechanism according to the second embodiment of the present invention is applied to another type of slide rail assembly, and the two slide rails thereof can be kept in a predetermined position relative to each other by the locking of the lock mechanism.

14 is a schematic diagram showing that the lock mechanism of the second embodiment of the present invention is applied to another type of slide rail assembly, and the lock mechanism has been unlocked so that the two slide rails can be in another predetermined position relative to each other.

15 is a schematic diagram showing that the lock mechanism according to the third embodiment of the present invention is applied to a cabinet and a movable member, and the movable member can be locked in a predetermined position relative to the cabinet through the lock mechanism.

FIG. 16 is a schematic diagram showing that the lock mechanism according to the third embodiment of the present invention is unlocked so that the movable member can move away from the predetermined position relative to the cabinet.

Detailed ways

As shown in FIG. 1 and FIG. 2 , the lock mechanism 20 according to the first embodiment of the present invention is suitable for a first object and a second object that can move relative to each other. In this embodiment, the first object and the second object are respectively a first rail 24 and a second rail 26 of a slide rail assembly 22 for example. The second rail 26 is displaceable relative to the first rail 24 . Preferably, the slide rail assembly 22 further includes a third rail 28 movably installed between the first rail 24 and the second rail 26 for extending the distance of the second rail 26 relative to the first rail 24 . Displacement stroke.

Preferably, the first rail 24 includes a first rail portion 30 and a first extension portion 32 . The first extension portion 32 extends laterally (transversely) with respect to the longitudinal length of the first rail portion 30 . The third rail 28 is movably mounted on the first rail 24 through the first rail portion 30 .

Preferably, the second rail 26 includes a second rail portion 34 and a second extension portion 36 . The second extension portion 36 extends laterally (transversely) with respect to the longitudinal length of the second rail portion 34 . The second rail 26 is movably mounted on the third rail 28 through the second rail portion 34 .

Preferably, the lock mechanism 20 is arranged on one of the first rail 24 and the second rail 26 . Here, the lock mechanism 20 is detachably connected to one of the first rail 24 and the second rail 26 , for example, the lock mechanism 20 is detachably connected to the first rail 24 . Specifically, the lock mechanism 20 is removably connected to the first extension of the first rail 24 by at least one connection feature of a housing 38 (eg, a first connection feature 40a and/or a second connection feature 40b ). At least one corresponding feature (eg, a first corresponding feature 42a and/or a second corresponding feature 42b) of a wall 32a of the portion 32. The connection between the at least one connecting feature 40a, 40b and the at least one corresponding feature 42a, 42b The method is, for example, snap connection, snap connection or screw connection, but the implementation is not limited.

On the other hand, the other of the first rail 24 and the second rail 26 is arranged with an additional feature 44 for cooperating with a locking portion 54 of the locking mechanism 20 . Here, an extension wall 45a of a fitting 45 has the additional feature 44, and the fitting 45 is detachably connected to the other of the first rail 24 and the second rail 26, for example, the fitting 45 can be Removably connected to the second rail 26 . Specifically, the fitting 45 is detachably connected to at least one mounting of the second extension 36 of the second rail 26 through at least one mounting feature (eg, a first mounting feature 46a and/or a second mounting feature 46b ) structure (eg, a first mounting structure 48a and/or a second mounting structure 48b). The connection manner of the at least one mounting feature 46a, 46b and the at least one mounting structure 48a, 48b is, for example, snap connection, snap connection or screw connection, but the implementation is not limited. It is worth mentioning that, in practice, the additional feature 44 can be directly integrated into the second rail 26, and the implementation is not limited.

As shown in FIGS. 3 and 4 , the locking mechanism 20 includes a driving device 50 and a locking member 52 . The lock member 52 includes the lock portion 54 (or the lock tongue). The locking member 52 can be in a first position P1 (as shown in FIGS. 3 and 4 ) or a second position P2 (as shown in FIGS. 5 and 6 ).

In FIGS. 3 and 4 , when the lock member 52 is in the first position P1 , the lock member 52 is used to lock the second rail 26 to prevent the second rail 26 from moving relative to the first rail 24 .

Preferably, the driving device includes a motor 56 (eg, a servo motor), and the locking mechanism 20 further includes an elastic member 58 , a linkage member 60 and a driving member 62 .

The elastic member 58 is used to provide elastic force to the locking member 52 . Here, the elastic force of the locking member 52 responding to the elastic member 58 can be maintained at the first position P1, and the first position P1 is a locking position as an example, but the implementation is not limited. Further, when the second rail 26 is at a predetermined position X1 relative to the first rail 24 (such as a retracted position, but not limited to), and the locking member 52 is at the first position P1, the locking member 52 The locking portion 54 can lock the additional feature 44 of the second rail 26 (eg, a hole or slot). In this state, the second rail 26 can be prevented from being separated from the predetermined position X1 in a direction D relative to the first rail 24 .

The linking member 60 is connected to the locking member 52 . Here, the linking member 60 is fixed to the locking member 52 as an example. Therefore, the linking member 60 and the locking member 52 can be seen as a whole. The link 60 can move linearly (or linearly) in response to a rotational driving force provided by a shaft 56a of the motor 56 .

The driving member 62 is connected to the shaft 56a of the motor 56, and the driving member 62 is, for example, a cam or a lever arm. The linking member 60 can be driven by the driving member 62 . Preferably, the direction of linear movement of the linking member 60 is substantially perpendicular to the direction of the shaft 56a. For example, the linear movement direction of the linking member 60 is the lateral direction, and the arrangement direction of the shaft 56a of the motor 56 is the longitudinal direction (the longitudinal direction is the same as the length direction or the movement direction of the slide rail). Further, the linking member 60 and a base 38a of the housing 38 have mutually matched structural features for guiding the linking member 60 to move linearly relative to the base 38a of the housing 38 . The mutually matching structural features are, for example, the structural matching of the protrusions 64a or the long holes 64b (or long grooves). There is a boundary, so that the link 60 can move linearly within a limited range relative to the base 38a.

Preferably, the lock mechanism 20 further includes a fixing base 66 to be fixed relative to the housing 38 . Here, the fixing seat 66 includes a first portion 66a, a second portion 66b and a third portion 66c arranged between the first portion 66a and the second portion 66b. The third portion 66c is fixed on the base 38a of the housing 38, and the first portion 66a and the second portion 66b are substantially vertically connected to the third portion 66c. When the locking member 52 is in the first position P1 , the locking portion 54 of the locking member 52 extends relative to the first portion 66 a of the fixing seat 66 and locks the additional feature 44 of the extension wall 45 a of the fitting 45 . On the other hand, the lock member 52 further includes a contact portion 68 , and the elastic member 58 is arranged between the second portion 66 b of the fixing seat 66 and the contact portion 68 of the lock member 52 . Preferably, the lock mechanism 20 further includes a sensor 70, and the sensor 70 can be used to detect whether the second rail 26 is in the predetermined position X1. For example, the sensor 70 is a micro switch, and the micro switch includes an elastic sensing portion 70a. When the second rail 26 is at the predetermined position X1 relative to the first rail 24, a For example, the extension wall 45a of the fitting 45 on the second rail 26 can press the elastic sensing portion 70a, so that the elastic sensing portion 70a accumulates an elastic force to generate an electronic sensing signal, and the sensor 70 detects accordingly. The second rail 26 is at the predetermined position X1 relative to the first rail 24 .

As shown in FIG. 4 , FIG. 5 and FIG. 6 , the locking member 52 can be driven by the driving device 50 to move from the first position P1 to the second position P2 in a non-rotational manner. Here, take the locking member 52 linearly displaced from the first position P1 to a lateral direction T to the second position P2, and the second position P2 is an unlocking position as an example. Wherein, when the lock member 52 is in the second position P2, the lock member 52 does not lock the second rail 26 to allow the second rail 26 to move relative to the first rail 24 .

Specifically, when the motor 56 of the driving device 50 receives an electronic control signal, the shaft 56a of the motor 56 can be controlled to rotate to a specific angle, so that the driving member 62 can change from a first state S1 (as shown in FIG. 4 ). shown) in a direction (such as clockwise) to a second state S2 (as shown in FIG. 5 and FIG. 6 ) to drive the link 60 and the lock 52 from the first position P1 to the The second position P2 is such that the locking portion 54 of the locking member 52 is in a retracted state relative to the first portion 66a of the fixing seat 66 and does not lock the additional feature 44 of the extension wall 45a of the fitting 45 . In this state, the second rail 26 can be allowed to move away from the predetermined position X1 to the direction D relative to the first rail 24 and reach another predetermined position X2 (eg, the extended position, please refer to FIG. 6 for this part). Wherein, when the lock member 52 is in the second position P2, the elastic member 58 is pushed between the second portion 66b of the fixing seat 66 and the contact portion 68 of the lock member 52, so that the elastic member 58 is in the position A state of accumulating elasticity.

It can be seen that the driving device 50 can receive an electronic control signal transmitted from an electronic device (such as a computer, a mobile phone or a wireless sensor) of the user to control the locking member 52 to stop locking the second rail 26 . It is worth mentioning that when the second rail 26 is displaced relative to the first rail 24 from the predetermined position X1 to the direction D to another predetermined position X2, the extension wall 45a of the fitting 45 on the second rail 26 does not change. The elastic sensing portion 70a is pressed again, so that the elastic sensing portion 70a releases the accumulated elastic force, and the sensor 70 detects that the second rail 26 has moved away from the predetermined position X1 relative to the first rail 24 accordingly. In addition, once the driving member 62 returns from the second state S2 (as shown in FIG. 6 or FIG. 5 ) to the first state S1 (as shown in FIG. 3 or FIG. 4 ) in another direction (eg, counterclockwise) , the locking member 52 can recover from the second position P2 to the first position P1 in response to the elastic member 58 releasing the accumulated elastic force.

As shown in FIGS. 7 and 8 , when the second rail 26 is at the predetermined position X1 relative to the first rail 24 , the locking member 52 is at the first position P1 , and the locking portion 54 of the locking member 52 can be used for Additional feature 44 to lock fitting 45 on this second rail 26 . In addition, when the second rail 26 is at the predetermined position X1, the extension wall 45a of the fitting 45 on the second rail 26 can press the elastic sensing portion 70a, so that the sensor 70 can detect the second rail accordingly 26 is at the predetermined position X1 relative to the first rail 24 .

As shown in FIG. 8 , FIG. 9 and FIG. 10 , when the lock member 52 is driven by the driving device 50 to move linearly from the first position P1 to the transverse direction T to the second position P2 , the lock member 52 is The locking portion 54 does not lock the additional feature 44 of the fitting 45 on the second rail 26 , so that the second rail 26 can be displaced from the predetermined position X1 to the direction D to the other predetermined position X2 relative to the first rail 24 . In addition, when the second rail 26 is no longer in the predetermined position X1 (eg, in the other predetermined position X2), the extension wall 45a of the fitting 45 on the second rail 26 no longer presses the elastic sensing portion 70a , so that the sensor 70 detects that the second rail 26 has left the predetermined position X1 relative to the first rail 24 accordingly.

As shown in FIGS. 8 and 11 , the lock mechanism 20 further includes a manual release feature 74 disposed on one of the link member 60 and the lock member 52 . By applying a force F to the manual release feature 74 when the linkage 60 is not responding to the rotational driving force provided by the shaft 56a of the motor 56, the manual release feature 74 is enabled to release the lock 52 from the first The position P1 (as shown in FIG. 8 ) is driven to the second position P2 (as shown in FIG. 11 ).

Further, taking the manual release feature 74 arranged on the linkage 60 and the manual release feature 74 being a hole as an example, the user can bind a rope 76 to the manual release feature 74 in advance. Further, in some cases (for example, the motor 56 of the driving device 50 is in the case of no electricity or damage), the shaft 56a of the motor 56 of the driving device 50 cannot be actuated, so that the driving member 62 is in the first A state S1 fails to drive the linking member 60 (as shown in FIG. 8 ). In this state, the user can apply the force F through the rope 76 to drive the linking member 60 to drive the locking member 52 from the locking member 52 . The first position P1 (shown in FIG. 8 ) is displaced to the second position P2 (shown in FIG. 11 ).

As shown in FIG. 12 , the slide rail assembly 22 is an undermount drawer slide and can be applied to furniture. The furniture includes a cabinet 78 and a drawer 80 . Most of the slide rail assembly 22 is hidden at the bottom of the drawer 80 . The first rail 24 is fixedly mounted on the cabinet body 78 , and the second rail 26 is used to carry the bottom of the drawer 80 . The structural configuration of the lock mechanism 20 has been disclosed above, and for the sake of brevity, it will not be repeated here.

As shown in FIG. 13 and FIG. 14 , the slide rail assembly 22 which is different from the above-mentioned first embodiment is a bottom-mounted drawer slide rail. In this second embodiment, the slide rail assembly 200 is schematically shown as Side mounted slides. The slide rail assembly 200 includes a first rail 202 and a second rail 204 that are relatively displaceable. Preferably, the relative displacement between the first rail 202 and the second rail 204 can be facilitated by a sliding member (such as a ball, not shown). Wherein, the first rail 202 can be fixed to a cabinet, for example, and at least a part of the rail section of the second rail 204 is mounted to a movable member, such as mounted to the side of a drawer. Further, the lock mechanism 20 may be mounted on one of the first rail 202 and the second rail 204 with the additional feature 44 arranged on the other of the first rail 202 and the second rail 204 . The structural arrangement of the lock mechanism 20 and the additional feature 44 and the matching function relationship with each other have been disclosed in the above-mentioned first embodiment, and are not repeated here for the sake of brevity.

As shown in FIG. 15 and FIG. 16 , in the third embodiment, the lock mechanism 20 is suitable for a first object and a second object that can move relative to each other. Here, the first object and the second object are a cabinet 302 and a movable element 304, respectively. The movable member 304 is movable relative to the cabinet body 302 . The movable member 304 is, for example, a door panel that can be closed or opened relative to the cabinet body 302 . Further, the lock mechanism 20 may be mounted on one of the cabinet body 302 and the movable member 304 , and the other of the cabinet body 302 and the movable member 304 is arranged with an additional feature 44 . The structural arrangement of the lock mechanism 20 and the additional feature 44 and the matching function relationship with each other have been disclosed in the above-mentioned first embodiment, and are not repeated here for the sake of brevity.

According to the above description, it can be seen that the enhancement effect and advantage of the present invention are:

(1) The locking member 52 of the locking mechanism 20 can be driven by the driving device 50 to move from a first position P1 to a second position P2 in a non-rotational manner (eg linearly).

(2) The lock mechanism 20 is an electronic lock or a smart lock, which is suitable for a first object and a second object that can move relative to each other. The lock mechanism 20 allows the second object to be locked at a predetermined position X1 relative to the first object, and the user The lock can be unlocked electronically. Wherein, the first object and the second object may be a combination of a first rail and a second rail, a cabinet and a drawer, or a cabinet and a door panel.

(3) The lock mechanism 20 can be electrically controlled or manually operated to unlock the second object relative to the first object by the lock mechanism 20 .

(4) The sensor 70 can be used to detect whether the second object is at the predetermined position X1 relative to the first object.

(5) The locking member 52 can maintain the first position P1 in response to the elastic force of the elastic member 58 .

(6) The linking member 60 is connected to the locking member 52 , and the linking member 60 and the base 38 a of the housing 38 have mutually matched structural features to guide the linking member 60 relative to the housing 38 move linearly.

(7) Since the lock mechanism 20 is detachably connected to one of the first object and the second object, the user can decide whether to add the lock mechanism 20 to the first object and the second object according to needs. One of the second pieces, and the other of the first piece and the second piece is arranged with additional features 44 capable of cooperating with the lock mechanism 20 .

Although the present invention has been described with reference to the present specific embodiments, those of ordinary skill in the art will recognize that the above embodiments are only used to illustrate the present invention, and can be made without departing from the spirit of the present invention Various equivalent changes and modifications, therefore, as long as the changes and modifications to the above-mentioned embodiments within the essential spirit of the present invention, will fall within the scope of the claims of the present application.

Claims (6)

1. a kind of furniture is characterized in that, comprises a cabinet and a drawer; A slide rail assembly includes a first rail and a second rail, the slide rail assembly is a bottom-mounted drawer slide rail that can be applied to furniture, the first rail is fixedly mounted on the cabinet body, and the second rail a rail for carrying the bottom of the drawer; A lock mechanism comprising: a drive device, including a motor; a drive member connected to a shaft of the motor; a locking member, which can be driven by the driving device to move from a locking position to an unlocking position in a non-rotational manner; A linking piece is connected to the locking piece, and an elastic piece is used to provide an elastic force to one of the locking piece and the linking piece, so as to keep the locking piece in the locking position; wherein: The driving member is configured to drive the linkage member through a rotational driving force provided by the shaft of the motor, so that the locking member linearly and non-rotatably leaves the locking position from the locking position; Wherein, the linkage member is fixed to the lock member, the linkage member and the lock member can be seen as a whole, and the linkage member can move linearly in response to a rotational driving force provided by a shaft of the motor; wherein, The direction of the linear movement of the linkage is substantially perpendicular to the direction of the axis; Wherein, the locking mechanism includes a casing, and the linkage member and the casing have mutually matched structural features to guide the linkage member to move linearly relative to the casing; wherein the locking mechanism is removably attached to one of the first or second rails, the locking mechanism including a locking portion, and the other of the first or second rails is arranged with an additional feature , the additional feature is used to cooperate with the lock; When the locking member is in the locking position, the locking member is used for locking the other of the first rail or the second rail to prevent the second rail from moving relative to the first rail. 2 . The furniture of claim 1 , further comprising an elastic member for providing elastic force to the locking member. 3 . 3. The furniture of claim 1, further comprising a manual release feature disposed on one of the link and the lock, when the link does not respond to the rotational drive provided by the motor When force is applied, the lock can be brought from the locked position to the unlocked position by the manual release feature. 4. The furniture of claim 1, wherein the lock mechanism is detachably connected to one of the first rail and the second rail through the housing. 5 . The furniture according to claim 2 , further comprising a fixing base, and the locking member further comprises a contact portion, and the elastic member is arranged between the fixing base and the contact portion. 6 . 6 . The furniture of claim 1 , further comprising a sensor for detecting whether the second rail is at a predetermined position relative to the first rail. 7 .

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