Drawer slide rail assembly buffer mechanism

Abstract

The drawer sliding rail assembly buffering mechanism comprises a buffering assembly and an acting piece which are arranged between a movable rail and a fixed rail, the buffering assembly comprises a locking block, the locking block is arranged on the buffering assembly in a swinging mode, and a limiting part is arranged on the acting piece; when the movable rail is locked and closed on the fixed rail, the acting piece is clamped and limited on the locking block through the limiting part, so that the acting piece and the locking block are in a clamped and limited locking state, the acting piece and the locking block form left-right limiting, and the limiting part prevents the acting piece from being separated from the locking block outwards in the left-right direction of the drawer and the cabinet body. The locking state between the acting piece and the locking block is prevented from losing efficacy, and even if the drawer is shaken left and right, the locking state between the movable rail and the fixed rail is not prone to being unlocked. And when the acting piece and the locking block are in a clamping and limiting locking state, the peripheral side of the acting piece is limited on the locking groove, and front-back limiting is formed between the peripheral side of the acting piece and the locking groove in the front-back direction of the movable rail and the fixed rail, so that the movable rail is prevented from freely sliding to be opened on the fixed rail.

Description

Technical Field

[0001] The invention relates to the technical field of drawer slide rail assemblies, in particular to a drawer slide rail assembly buffer mechanism. Background Art

[0002] The existing drawer slide with a buffer closing mechanism needs to be provided with a locking mechanism between the fixed rail and the movable rail that can be locked and unlocked. In the front and rear sliding direction of the movable rail relative to the fixed rail, the locking mechanism only has front and rear limit stops to lock the movable rail on the fixed rail. However, in the left and right directions between the drawer and the cabinet, the locking mechanism is not provided with a left and right limit stop structure. Since beads are provided between part of the movable rail and the fixed rail, if the movable rail is shaken, the locking mechanism is easily unlocked in the left and right directions. It can be understood that the movable rail drives the movable part of the locking mechanism to disengage the locked part of the locking mechanism outward in the left and right directions, and the locked state of the locking mechanism becomes invalid, so that the movable rail opens on the fixed rail under the action of elasticity.

[0003] The above structure can refer to the anti-deformation stable opening and closing structure of a slide rail assembly disclosed in Chinese Patent No. ZL201911159510.2. Summary of the invention

[0004] The object of the present invention is to provide a buffer mechanism of a drawer slide rail assembly, wherein a limiting portion is provided between the locking block and the acting member of the buffer assembly, so that when the movable rail is closed on the fixed rail, the acting member and the locking block form left and right limits, and the limiting portion prevents the acting member from escaping from the locking block in the left and right directions of the drawer and the cabinet body, thereby avoiding the failure of the locking state between the acting member and the locking block. Even if the drawer is shaken left and right, it is not easy for the movable rail to be released from the locked state with the fixed rail.

[0005] The object of the present invention is achieved in that: A drawer slide rail assembly buffer mechanism comprises a buffer assembly and an action member arranged between a movable rail and a fixed rail, wherein the buffer assembly comprises a locking block, the locking block is swingably arranged on the buffer assembly, and a limiting portion is arranged on the action member; When the movable rail is locked and closed on the fixed rail, the operating member is locked and limited on the locking block by the limiting part, so that the operating member and the locking block are in a locked state of locking and limiting. The operating member and the locking block form left and right limits. The limiting part prevents the operating member from escaping from the locking block in the left and right directions of the drawer and the cabinet, thereby avoiding the failure of the locking state between the operating member and the locking block. Even if the drawer is shaken left and right, it is not easy for the movable rail to be unlocked from the fixed rail.

[0006] A locking groove is provided on the locking block. When the operating member and the locking block are in a locked limit locking state, the outer peripheral side of the operating member is limited on the locking groove, and a front and rear limit is formed between the outer peripheral side of the operating member and the locking groove in the front and rear directions of the movable rail and the fixed rail to prevent the movable rail from sliding freely and opening on the fixed rail.

[0007] The locking block is provided with a locking portion that cooperates with the limiting portion. When the operating member and the locking block are in a locked, limited locking state, the limiting portion of the operating member is limited on the inner side of the locking portion of the locking block. The limiting portion and the locking portion form an anti-slip operating portion between the locking block and the operating member. When the movable rail wants to drive the operating member to separate from the locking block in the left and right directions, the limiting portion of the operating member is always limited on the inner side of the locking portion of the locking block, preventing the movable rail from slipping out of the fixed rail in the locked state, thereby avoiding locking failure.

[0008] The locking block is provided with an elastic deformation part and a reset action part; the locking block has a normal unlocking position and an abnormal unlocking position between the movable rail and the fixed rail; The locking block is in an abnormal unlocking position, and the action member enters the reset action portion along the elastic deformation portion when the movable rail moves. When the movable rail moves, the action member drives the locking block to move to a normal unlocking position through the reset action portion.

[0009] The elastic deformation part is provided with a guiding inclined surface. When the locking block is in an abnormal unlocking position, the action member squeezes the elastic deformation part along the guiding inclined surface to deform and enter the reset action part.

[0010] When the lock block and the operating member are unlocked for some reason and the lock block is in an abnormal unlocking position, the movable rail and the fixed rail are in an abnormal use state (the movable rail cannot be completely closed on the fixed rail). At this time, the elastic deformation part can be deformed by squeezing the elastic deformation part along the guide inclined surface of the elastic deformation part, and then the operating member enters the reset operating part to drive the lock block to move to the normal unlocking position, thereby preventing the user from disassembling the drawer for adjustment when the lock block is in the abnormal unlocking position, or preventing the user from pushing the drawer hard to deform the lock block when the lock block is in the abnormal unlocking position.

[0011] A deformation avoidance portion is provided below the elastic deformation portion corresponding to the locking block. The operating member acts on the elastic deformation portion when the locking block is in an abnormal unlocking position. The elastic deformation portion elastically deforms along the deformation avoidance portion. The deformation avoidance portion can easily deform the elastic deformation portion. The deformation avoidance portion is arranged below the elastic deformation portion, which is convenient for the elastic deformation portion to deform toward below it, thereby avoiding damage to the elastic deformation portion when the operating member enters the reset operating portion. After the operating member enters the reset operating portion, the elastic deformation portion is reset, and the operating member is limited between the reset operating portion and the elastic deformation portion. Then, the operating member pulls the locking block to a normal unlocking position through the movable rail. Then, the operating member escapes from the reset operating portion outwardly under the continued movement of the movable rail. At this time, the movable rail and the fixed rail can resume normal use.

[0012] The buffer assembly also includes a positioning seat, which is provided with a positioning groove, and the locking block is provided with an unlocking positioning portion. When the locking block is in a normal unlocking position, the unlocking positioning portion acts on the positioning groove. When the locking block is in an abnormal unlocking position, the unlocking positioning portion does not act on the positioning groove.

[0013] The locking block is in a normal unlocking position, waiting for the action member to return to the locked state with the locking block next time.

[0014] The buffer assembly also includes a movable seat, a locking block is rotatably connected to the movable seat, and a locking guide portion is provided on the locking block; When the movable rail is opened, the operating member drives the locking block to rotate on the movable seat, and the operating member is separated from the locking block along the locking guide portion, so that the operating member and the locking block are switched from a locked state to an unlocked state; When the movable rail is movably closed, the action member is locked on the locking block along the locking guide portion to drive the locking block to rotate to the locking position.

[0015] The buffer assembly also includes a damper and an elastic member, one end of which acts on the movable seat to achieve elastic opening and buffer closing between the movable rail and the fixed rail.

[0016] The action piece is provided with an arc-shaped matching part which forms point contact, line contact or surface contact with the locking guide part. The arc-shaped matching part can reduce the friction resistance between the action piece and the locking guide part, so that the action piece has an anti-wear effect.

[0017] The beneficial effects of the present invention are as follows: When the movable rail is locked and closed on the fixed rail, the operating member is locked and limited on the locking block by the limiting part, so that the operating member and the locking block are in a locked state of locking and limiting. The operating member and the locking block form left and right limits. The limiting part prevents the operating member from escaping from the locking block in the left and right directions of the drawer and the cabinet, thereby avoiding the failure of the locking state between the operating member and the locking block. Even if the drawer is shaken left and right, it is not easy for the movable rail to be unlocked from the fixed rail, so that the movable rail and the fixed rail are effectively in a locked state, and the movable rail cannot drive the operating member to escape from the locking block in the left and right directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the opening structure of the movable rail according to an embodiment of the present invention.

[0019] Figure 2 It is a structural schematic diagram of a locking block and an acting portion in an unlocked state according to an embodiment of the present invention.

[0020] Figure 3 The figure is a schematic diagram of the assembly and decomposition structure of a drawer slide rail assembly according to an embodiment of the present invention.

[0021] Figure 4 The figure is a schematic diagram of the assembly and decomposition structure of a buffer mechanism according to an embodiment of the present invention.

[0022] Figure 5 It is a schematic diagram of the exploded structure of another assembly position of the buffer mechanism according to one embodiment of the present invention.

[0023] Figure 6 This is a structural schematic diagram of a locking block and an actuating member in a locked state according to an embodiment of the present invention.

[0024] Figure 7 This is a structural schematic diagram of a locking block and an operating member in a state ready to unlock according to an embodiment of the present invention.

[0025] Figure 8 This is a structural schematic diagram of an action member preparing to enter a reset action portion according to an embodiment of the present invention.

[0026] Fig. 9 It is a structural schematic diagram of an action member entering a reset action portion according to an embodiment of the present invention.

[0027] Fig.10 The figure is a schematic diagram of the assembly and decomposition structure of the movable seat and the locking block according to an embodiment of the present invention.

[0028] Fig.11 The figure is a schematic diagram of the assembly structure of a drawer and a cabinet according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] See also Figure 10-11 A drawer slide rail assembly buffer mechanism includes a buffer assembly 3 and an action member 5 arranged between a movable rail 1 and a fixed rail 2, the buffer assembly 3 includes a locking block 4, the locking block 4 is swingably arranged on the buffer assembly 3, and a limiting portion 6 is provided on the action member 5; When the movable rail 1 is locked and closed on the fixed rail 2, the action member 5 is locked and limited on the locking block 4 through the limiting portion 6, so that the action member 5 and the locking block 4 are in a locked state of locking and limiting.

[0031] In this embodiment, the action member 5 can be fixedly arranged on the movable rail 1 by welding, and the buffer assembly 3 is arranged on the fixed rail 2; or, the buffer assembly 3 is arranged on the movable rail 1, and the action member 5 is arranged on the fixed rail 2.

[0032] The locking block 4 is provided with a locking groove 7 . When the operating member 5 and the locking block 4 are in a locked and limited locking state, the outer peripheral side of the operating member 5 is limited on the locking groove 7 .

[0033] The locking block 4 is provided with a locking portion 8 that cooperates with the limiting portion 6. When the operating member 5 and the locking block 4 are in a locking, limiting and locking state, the limiting portion 6 of the operating member 5 is limited on the inner side of the locking portion 8 of the locking block 4, and the limiting portion 6 and the locking portion 8 form an anti-slip operating portion between the locking block 4 and the operating member 5.

[0034] The locking block 4 is provided with an elastic deformation portion 11 and a reset action portion 12; the locking block 4 has a normal unlocking position and an abnormal unlocking position between the movable rail 1 and the fixed rail 2; The locking block 4 is in the abnormal unlocking position, and the operating member 5 moves along the elastic deformation portion 11 to enter the reset operating portion 12 when the movable rail 1 moves. When the movable rail 1 moves, the operating member 5 drives the locking block 4 to move to the normal unlocking position through the reset operating portion 12.

[0035] The elastic deformation portion 11 is provided with a guide inclined surface 13 . When the locking block 4 is in the abnormal unlocking position, the action member 5 squeezes the elastic deformation portion 11 along the guide inclined surface 13 to deform and enter the reset action portion 12 .

[0036] A deformation avoidance portion 14 is provided below the locking block 4 corresponding to the elastic deformation portion 11 . The action member 5 acts on the elastic deformation portion 11 when the locking block 4 is in an abnormal unlocking position, and the elastic deformation portion 11 elastically deforms along the deformation avoidance portion 14 .

[0037] The buffer assembly 3 also includes a positioning seat 15, a positioning groove 16 is provided on the positioning seat 15, and the locking block 4 is provided with an unlocking positioning portion 17. When the locking block 4 is in a normal unlocking position, the unlocking positioning portion 17 acts on the positioning groove 16 for positioning. When the locking block 4 is in an abnormal unlocking position, the unlocking positioning portion 17 does not act on the positioning groove 16.

[0038] The buffer assembly 3 further includes a movable seat 18, the locking block 4 is rotatably connected to the movable seat 18, and a locking guide portion 19 is provided on the locking block 4; When the movable rail 1 is opened, the action member 5 drives the locking block 4 to rotate on the movable seat 18, and the action member 5 is separated from the locking block 4 along the locking guide 19, so that the action member 5 and the locking block 4 are switched from the locked state to the unlocked state; When the movable rail 1 is movably closed, the action member 5 is locked on the locking block 4 along the locking guide portion 19 to drive the locking block 4 to rotate to the locking position.

[0039] In this embodiment, an axial hole is provided on the movable seat 18, and a rotating shaft rotatably matched with the axial hole is provided on the locking block 4.

[0040] In this embodiment, the movable seat 18 is provided with a rotational clearance position corresponding to the rotational position of the locking block 4 .

[0041] The buffer assembly 3 further includes a damper 20 and an elastic member 21 . One end of the damper 20 and the elastic member 21 act on the movable seat 18 to achieve elastic opening and buffer closing between the movable rail 1 and the fixed rail 2 .

[0042] The action member 5 is provided with an arc-shaped matching portion 22 which forms point contact, line contact or surface contact with the locking guide portion 19 .

[0043] In this embodiment, a first mounting groove for mounting a damper 20 is provided on the positioning seat 15. The damper 20 includes an outer shell and a piston rod elastically and telescopically arranged in the outer shell. The elastic member 21 is a compression spring. Two second mounting grooves are provided on the positioning seat 15. The two second mounting grooves are spaced apart on the left and right sides of the positioning seat 15. An elastic member 21 is provided on each second mounting groove. A hook at one end of the elastic member 21 is fixed on the second mounting groove, and a hook at the other end of the elastic member 21 is fixed on the movable seat 18.

[0044] In this embodiment, a mounting position is provided on the fixed rail 2, and a positioning seat 15 is fixed on the mounting position. One end of the positioning seat 15 is provided with a long strip extending toward the front end of the fixed rail 2, and a positioning groove 16 is provided on the long strip.

[0045] In this embodiment, the fixed rail 2 is fixed on the inner side of the cabinet 23 , and the movable rail 1 is fixed on the outer side of the drawer 24 .

[0046] In this embodiment, an arc-shaped unlocking mating section 25 is provided between the locking block 4 and the movable seat 18. When the locking block 4 is rotated to unlock, the arc-shaped unlocking mating section 25 of the locking block 4 is close to the arc-shaped unlocking mating section 25 of the movable seat 18. On the one hand, the arc-shaped unlocking mating section 25 enables the locking block 4 to rotate smoothly. On the other hand, the arc-shaped unlocking mating section 25 plays a limiting role to prevent the locking block 4 from rotating at a large angle, thereby preventing the locking block 4 from being unable to enter the positioning groove 16 under the action of elasticity after being unlocked.

[0047] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for illustrating the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A drawer slide rail assembly buffer mechanism, comprising a buffer assembly (3) and an action member (5) arranged between a movable rail (1) and a fixed rail (2), characterized in that: The buffer assembly (3) comprises a locking block (4), the locking block (4) is swingably arranged on the buffer assembly (3), and a limiting portion (6) is provided on the action member (5); When the movable rail (1) is locked and closed on the fixed rail (2), the action member (5) is locked and limited on the locking block (4) through the limiting portion (6), so that the action member (5) and the locking block (4) are in a locked and limited locking state.

2. The drawer slide rail assembly buffer mechanism according to claim 1, characterized in that: The locking block (4) is provided with a locking groove (7), and when the operating member (5) and the locking block (4) are in a locked position-limiting locking state, the outer peripheral side of the operating member (5) is limited on the locking groove (7).

3. The drawer slide rail assembly buffer mechanism according to claim 1, characterized in that: The locking block (4) is provided with a locking portion (8) cooperating with the limiting portion (6); when the operating member (5) and the locking block (4) are in a locking, limiting and locking state, the limiting portion (6) of the operating member (5) is limited on the inner side of the locking portion (8) of the locking block (4); the limiting portion (6) and the locking portion (8) form an anti-slip operating portion between the locking block (4) and the operating member (5).

4. The drawer slide rail assembly buffer mechanism according to claim 1, characterized in that: The locking block (4) is provided with an elastic deformation portion (11) and a reset action portion (12); the locking block (4) has a normal unlocking position and an abnormal unlocking position between the movable rail (1) and the fixed rail (2); The locking block (4) is in an abnormal unlocking position, and the action member (5) moves along the elastic deformation portion (11) to enter the reset action portion (12) when the movable rail (1) moves. When the movable rail (1) moves, the action member (5) drives the locking block (4) to move to a normal unlocking position through the reset action portion (12).

5. The drawer slide rail assembly buffer mechanism according to claim 4, characterized in that: The elastic deformation portion (11) is provided with a guide inclined surface (13), and when the locking block (4) is in an abnormal unlocking position, the action member (5) squeezes the elastic deformation portion (11) along the guide inclined surface (13) to deform the elastic deformation portion (11) and enters the reset action portion (12).

6. The drawer slide rail assembly buffer mechanism according to claim 4, characterized in that: A deformation avoidance portion (14) is provided below the locking block (4) corresponding to the elastic deformation portion (11); the action member (5) acts on the elastic deformation portion (11) when the locking block (4) is in an abnormal unlocking position, and the elastic deformation portion (11) elastically deforms along the deformation avoidance portion (14).

7. The drawer slide rail assembly buffer mechanism according to claim 4, characterized in that: The buffer assembly (3) further comprises a positioning seat (15), the positioning seat (15) being provided with a positioning groove portion (16), the locking block (4) being provided with an unlocking positioning portion (17), and when the locking block (4) is in a normal unlocking position, the unlocking positioning portion (17) acts on the positioning groove portion (16) for positioning, and when the locking block (4) is in an abnormal unlocking position, the unlocking positioning portion (17) does not act on the positioning groove portion (16).

8. The drawer slide rail assembly buffer mechanism according to claim 1, characterized in that: The buffer assembly (3) further comprises a movable seat (18), the locking block (4) being rotatably connected to the movable seat (18), and a locking guide portion (19) being provided on the locking block (4); When the movable rail (1) is moved and opened, the operating member (5) drives the locking block (4) to rotate on the movable seat (18), and the operating member (5) is separated from the locking block (4) along the locking guide portion (19), so that the operating member (5) and the locking block (4) are switched from a locked state to an unlocked state; When the movable rail (1) is movably closed, the action member (5) is locked on the locking block (4) along the locking guide portion (19) to drive the locking block (4) to rotate to a locking position.

9. The drawer slide rail assembly buffer mechanism according to claim 8, characterized in that: The buffer assembly (3) further comprises a damper (20) and an elastic member (21), one end of each of which acts on the movable seat (18) to achieve elastic opening and buffered closing between the movable rail (1) and the fixed rail (2).

10. The drawer slide rail assembly buffer mechanism according to claim 8, characterized in that: The action member (5) is provided with an arc-shaped matching portion (22) which forms point contact, line contact or surface contact with the locking guide portion (19).

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