Drawer slide rail assembly buffer mechanism

Abstract

The utility model relates to a drawer slide rail assembly buffer mechanism, which comprises a buffer component and an acting piece which are arranged between a movable rail and a fixed rail, the buffer component comprises a locking block, the locking block is arranged on the buffer component in a swinging manner, and the acting piece is provided with a limiting part; 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 utility model relates to the technical field of drawer slide assemblies, in particular to a buffer mechanism for a drawer slide assembly. Background Art

[0002] For the existing drawer slide with a buffer closing mechanism, a locking and disengaging mechanism that can be in an unlocked state and a locked state needs to be provided between the fixed rail and the moving rail. In the front-back sliding direction of the moving rail relative to the fixed rail, the locking and disengaging mechanism only has front-back limits to lock the moving rail on the fixed rail. However, in the left-right direction between the drawer and the cabinet body, the locking and disengaging mechanism is not provided with left-right limiting structures. Since beads are provided between some of the moving rail and the fixed rail, if the moving rail shakes, the locking and disengaging mechanism is likely to be unlocked in the left-right direction. It can be understood that the moving rail drives the movable part of the locking and disengaging mechanism to protrude outward from the locking part of the locking and disengaging mechanism in the left-right direction, and the locked state of the locking and disengaging mechanism fails. In this way, the moving rail is opened on the fixed rail under the elastic action.

[0003] The above structure can refer to an anti-deformation stable opening and closing structure of a slide rail assembly disclosed in Chinese Patent No. ZL 201911159510.2. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a buffer mechanism for a drawer slide assembly. A limiting part is provided between the lock block of the buffer assembly and the acting part. When the moving rail is closed on the fixed rail, the acting part and the lock block form left-right limits. The limiting part prevents the acting part from protruding outward from the lock block in the left-right direction between the drawer and the cabinet body, avoiding the failure of the locked state between the acting part and the lock block. Even if the drawer shakes left and right, the moving rail is not easily unlocked from the fixed rail.

[0005] The purpose of the utility model is realized as follows:

[0006] A buffer mechanism for a drawer slide assembly includes a buffer assembly and an acting part arranged between the moving rail and the fixed rail. The buffer assembly includes a lock block, the lock block is swingably arranged on the buffer assembly, and a limiting part is provided on the acting part;

[0007] When the moving rail is locked and closed on the fixed rail, the acting part is locked and limited on the lock block through the limiting part, so that the acting part and the lock block are in a locked state of locking and limiting. The acting part and the lock block form left-right limits. The limiting part prevents the acting part from protruding outward from the lock block in the left-right direction between the drawer and the cabinet body, avoiding the failure of the locked state between the acting part and the lock block. Even if the drawer shakes left and right, the moving rail is not easily unlocked from the fixed rail.

[0008] A lock groove is provided on the lock block. When the acting part and the lock block are in a locked state of locking and limiting, the outer peripheral side of the acting part is limited on the lock groove, and front-back limits are formed between the outer peripheral side of the acting part and the lock groove in the front-back direction of the moving rail and the fixed rail, preventing the moving rail from freely sliding and opening on the fixed rail.

[0009] The locking block is provided with a locking portion that cooperates with the limiting portion. When the acting member and the locking block are in a locked and limited state, the limiting portion of the acting 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-disengagement acting portion between the locking block and the acting member. When the moving rail wants to drive the acting member to disengage from the locking block in the left-right direction, the limiting portion of the acting member is always limited on the inner side of the locking portion of the locking block, preventing the moving rail from disengaging from the fixed rail when in the locked state and avoiding locking failure.

[0010] The locking block is provided with an elastic deformation portion and a reset acting portion; the locking block has a normal unlocking position and an abnormal unlocking position between the moving rail and the fixed rail;

[0011] When the locking block is in the abnormal unlocking position, the acting member enters the reset acting portion along the elastic deformation portion during the movement of the moving rail. When the acting member moves, it drives the locking block to move to the normal unlocking position through the reset acting portion.

[0012] The elastic deformation portion is provided with a guiding inclined surface. When the locking block is in the abnormal unlocking position, the acting member squeezes the elastic deformation portion along the guiding inclined surface to deform and enters the reset acting portion.

[0013] When for some reason the locking block and the acting member are unlocking, and the locking block is in the abnormal unlocking position, at this time the moving rail and the fixed rail are in an abnormal use state (the moving rail cannot be completely closed on the fixed rail). At this time, the acting member can squeeze the elastic deformation portion along the guiding inclined surface of the elastic deformation portion to deform, and then the acting member enters the reset acting portion to drive the locking block to move to the normal unlocking position, preventing the user from having to disassemble the drawer for adjustment when the locking block is in the abnormal unlocking position, or preventing the user from pushing the drawer forcefully when the locking block is in the abnormal unlocking position and causing the locking block to deform.

[0014] A deformation clearance portion is provided corresponding to the lower part of the elastic deformation portion of the locking block. When the acting member acts on the elastic deformation portion when the locking block is in the abnormal unlocking position, the elastic deformation portion elastically deforms along the deformation clearance portion. The deformation clearance portion can easily enable the elastic deformation portion to deform. The deformation clearance portion is arranged below the elastic deformation portion, facilitating the elastic deformation portion to deform downward, avoiding damage to the elastic deformation portion when the acting member enters the reset acting portion. After the acting member enters the reset acting portion, the elastic deformation portion resets, and the acting member is limited between the reset acting portion and the elastic deformation portion. Then the acting member drives the locking block to move to the normal unlocking position through the movement of the moving rail. Then, when the acting member continues to move, it disengages from the reset acting portion, and at this time the moving rail and the fixed rail can return to the normal use state.

[0015] The buffer assembly further includes a positioning seat. The positioning seat is provided with a positioning groove portion, and the locking block is provided with an unlocking positioning portion. When the locking block is in the normal unlocking position, the unlocking positioning portion is positioned and acts on the positioning groove portion. When the locking block is in the abnormal unlocking position, the unlocking positioning portion does not act on the positioning groove portion.

[0016] The lock block is in the normal unlocking position, waiting for the actuating member to restore the locked state with the lock block next time.

[0017] The buffer assembly further includes a movable seat, the lock block is rotatably connected to the movable seat, and a lock release guiding portion is provided on the lock block;

[0018] When the movable rail is opened, the actuating member drives the lock block to rotate on the movable seat, and the actuating member disengages from the lock block along the lock release guiding portion, so that the state between the actuating member and the lock block is switched from the locked state to the unlocked state;

[0019] When the movable rail is closed, the actuating member is latched on the lock block along the lock release guiding portion to drive the lock block to rotate to the locked position.

[0020] The buffer assembly further includes a damper and an elastic member. One ends of the damper and the elastic member act on the movable seat to achieve elastic opening and buffered closing between the movable rail and the fixed rail.

[0021] An arc-shaped mating portion that forms a point contact, a line contact or a surface contact with the lock release guiding portion is provided on the actuating member. The arc-shaped mating portion can reduce the frictional resistance between the actuating member and the lock release guiding portion, so that the actuating member has an anti-wear effect.

[0022] The beneficial effects of the present utility model are as follows:

[0023] When the movable rail is locked and closed on the fixed rail, the actuating member is latched and limited on the lock block through the limiting portion, so that the actuating member and the lock block are in the locked state of latching and limiting. The actuating member and the lock block form left and right limits. The limiting portion prevents the actuating member from being pulled out of the lock block in the left and right directions of the drawer and the cabinet body, avoiding the failure of the locked state between the actuating member and the lock block. Even if the drawer is shaken left and right, the movable rail is not easily unlocked from the fixed rail. Effectively, when the movable rail and the fixed rail are in the locked state, the movable rail cannot drive the actuating member to be pulled out of the lock block in the left and right directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the movable rail opening structure of an embodiment of the present utility model.

[0025] Figure 2 It is a schematic structural diagram of the lock block and the acting portion in the unlocked state of an embodiment of the present utility model.

[0026] Figure 3 It is a schematic assembly and disassembly structural diagram of the drawer slide rail assembly of an embodiment of the present utility model.

[0027] Figure 4 It is a schematic assembly and disassembly structural diagram of the buffer mechanism of an embodiment of the present utility model.

[0028] Figure 5 It is a schematic assembly and disassembly structural diagram of the buffer mechanism of an embodiment of the present utility model from another direction.

[0029] Figure 6 This is a schematic structural diagram of the locking block and the actuating member in the locked state according to an embodiment of the present utility model.

[0030] Figure 7 This is a schematic structural diagram of the locking block and the actuating member in the state of being ready to unlock according to an embodiment of the present utility model.

[0031] Figure 8 This is a schematic structural diagram of the actuating member ready to enter the reset acting part according to an embodiment of the present utility model.

[0032] Figure 9 This is a schematic structural diagram of the actuating member entering the reset acting part according to an embodiment of the present utility model.

[0033] Figure 10 This is a schematic exploded assembly structural diagram of the movable seat and the locking block according to an embodiment of the present utility model.

[0034] Figure 11 This is a schematic assembly structural diagram of the drawer and the cabinet body according to an embodiment of the present utility model. Detailed implementation manners

[0035] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] Refer to Figure 10 - Figure 11 , a buffer mechanism for a drawer slide assembly, including a buffer assembly 3 and an actuating member 5 disposed between a moving rail 1 and a fixed rail 2. The buffer assembly 3 includes a locking block 4 which is swingably disposed on the buffer assembly 3, and a limiting portion 6 is provided on the actuating member 5;

[0037] When the moving rail 1 is locked and closed on the fixed rail 2, the actuating member 5 is locked and limited on the locking block 4 through the limiting portion 6, so that the actuating member 5 and the locking block 4 are in a locked state of locking and limiting.

[0038] In this embodiment, the actuating member 5 can be fixedly disposed on the moving rail 1 by welding, and the buffer assembly 3 is disposed on the fixed rail 2; alternatively, the buffer assembly 3 is disposed on the moving rail 1 and the actuating member 5 is disposed on the fixed rail 2.

[0039] A locking groove 7 is provided on the locking block 4. When the actuating member 5 and the locking block 4 are in a locked state of locking and limiting, the outer peripheral side of the actuating member 5 is limited on the locking groove 7.

[0040] A locking portion 8 cooperating with the limiting portion 6 is provided on the locking block 4. When the actuating member 5 and the locking block 4 are in a locked state of locking and limiting, the limiting portion 6 of the actuating 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-disengagement acting part between the locking block 4 and the actuating member 5.

[0041] The locking block 4 is provided with an elastic deformation portion 11 and a reset acting portion 12; the locking block 4 has a normal unlocking position and an abnormal unlocking position between the moving rail 1 and the fixed rail 2;

[0042] When the locking block 4 is in the abnormal unlocking position, the acting member 5 moves along the elastic deformation portion 11 of the moving rail 1 and enters the reset acting portion 12. When the moving rail 1 moves, the acting member 5 drives the locking block 4 to move to the normal unlocking position through the reset acting portion 12.

[0043] The elastic deformation portion 11 is provided with a guiding inclined surface 13. When the locking block 4 is in the abnormal unlocking position, the acting member 5 presses and deforms the elastic deformation portion 11 along the guiding inclined surface 13 and enters the reset acting portion 12.

[0044] A deformation clearance portion 14 is provided below the elastic deformation portion 11 corresponding to the locking block 4. When the acting member 5 acts on the elastic deformation portion 11 when the locking block 4 is in the abnormal unlocking position, the elastic deformation portion 11 elastically deforms along the deformation clearance portion 14.

[0045] The buffer assembly 3 further includes a positioning seat 15. The positioning seat 15 is provided with a positioning groove portion 16. The locking block 4 is provided with an unlocking positioning portion 17. When the locking block 4 is in the normal unlocking position, the unlocking positioning portion 17 is positioned and acts on the positioning groove portion 16. When the locking block 4 is in the abnormal unlocking position, the unlocking positioning portion 17 does not act on the positioning groove portion 16.

[0046] The buffer assembly 3 further includes a movable seat 18. The locking block 4 is rotatably connected to the movable seat 18. The locking block 4 is provided with a locking separation guiding portion 19;

[0047] When the moving rail 1 is opened, the acting member 5 drives the locking block 4 to rotate on the movable seat 18. The acting member 5 disengages from the locking block 4 along the locking separation guiding portion 19, so that the state between the acting member 5 and the locking block 4 is switched from the locked state to the unlocked state;

[0048] When the moving rail 1 is closed, the acting member 5 is latched on the locking block 4 along the locking separation guiding portion 19 to drive the locking block 4 to rotate to the locked position.

[0049] In this embodiment, the movable seat 18 is provided with a shaft hole, and the locking block 4 is provided with a rotating shaft that is rotationally matched with the shaft hole.

[0050] In this embodiment, the movable seat 18 is provided with a rotation clearance position corresponding to the rotation position of the locking block 4.

[0051] The buffer assembly 3 further includes a damper 20 and an elastic member 21. One ends of the damper 20 and the elastic member 21 act on the movable seat 18 to achieve elastic opening and buffered closing between the moving rail 1 and the fixed rail 2.

[0052] The acting member 5 is provided with an arc-shaped matching portion 22 that forms a point contact, a line contact or a surface contact with the locking separation guiding portion 19.

[0053] In this embodiment, a first installation groove for installing the damper 20 is provided on the positioning seat 15. The damper 20 includes a housing and a piston rod that is elastically telescopically arranged inside the housing. The elastic member 21 is a compression spring. Two second installation grooves are provided on the positioning seat 15. The two second installation grooves are arranged at intervals left and right on the positioning seat 15. Each second installation groove is provided with an elastic member 21. The hook at one end of the elastic member 21 is fixed on the second installation groove, and the hook at the other end of the elastic member 21 is fixed on the movable seat 18.

[0054] In this embodiment, an installation position is provided on the fixed rail 2, and the positioning seat 15 is fixed at the installation position. One end of the positioning seat 15 is provided with a long strip extending towards the front end of the fixed rail 2, and a positioning groove portion 16 is provided on the long strip.

[0055] In this embodiment, the fixed rail 2 is fixed inside the cabinet body 23, and the movable rail 1 is fixed outside the drawer 24.

[0056] In this embodiment, an arc-shaped unlocking cooperation section 25 is provided between the lock block 4 and the movable seat 18. When the lock block 4 rotates to unlock, the arc-shaped unlocking cooperation section 25 of the lock block 4 is close to the arc-shaped unlocking cooperation section 25 of the movable seat 18. On the one hand, the arc-shaped unlocking cooperation section 25 makes the rotation of the lock block 4 smooth. On the other hand, the arc-shaped unlocking cooperation section 25 plays a limiting role to prevent the lock block 4 from rotating at a large angle and avoid the lock block 4 not being able to enter the positioning groove portion 16 under the elastic action after unlocking.

[0057] The above is the preferred solution of the present invention, showing and describing the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A buffer mechanism for a drawer slide assembly, comprising a buffer component (3) and an acting member (5) disposed between a moving rail (1) and a fixed rail (2), characterized in that: 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 acting member (5); When the moving rail (1) is locked and closed on the fixed rail (2), the acting member (5) is locked and limited on the locking block (4) through the limiting portion (6), so that the acting member (5) and the locking block (4) are in a locked state of locking and limiting.

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

3. The buffer mechanism of the drawer slide assembly according to claim 1, characterized in that: A locking portion (8) cooperating with the limiting portion (6) is provided on the locking block (4). When the acting member (5) and the locking block (4) are in a locked state of locking and limiting, the limiting portion (6) of the acting 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-disengagement acting portion between the locking block (4) and the acting member (5).

4. The buffer mechanism of the drawer slide assembly according to claim 1, wherein: An elastic deformation portion (11) and a reset acting portion (12) are provided on the locking block (4); the locking block (4) has a normal unlocking position and an abnormal unlocking position between the moving rail (1) and the fixed rail (2); When the locking block (4) is in the abnormal unlocking position, the acting member (5) moves along the elastic deformation portion (11) into the reset acting portion (12) during the movement of the moving rail (1), and the acting member (5) drives the locking block (4) to move to the normal unlocking position through the reset acting portion (12) when the moving rail (1) moves.

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

6. The buffer mechanism of the drawer slide assembly according to claim 4, wherein: A deformation clearance portion (14) is provided below the elastic deformation portion (11) corresponding to the locking block (4). When the acting member (5) acts on the elastic deformation portion (11) when the locking block (4) is in the abnormal unlocking position, the elastic deformation portion (11) elastically deforms along the deformation clearance portion (14).

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

8. The buffer mechanism of the drawer slide assembly according to claim 1, characterized in that: 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 separation guiding portion (19) is provided on the locking block (4); When the moving rail (1) is moved to be opened, the acting member (5) drives the locking block (4) to rotate on the movable seat (18), and the acting member (5) disengages from the locking block (4) along the locking separation guiding portion (19), so that the state between the acting member (5) and the locking block (4) is switched from the locked state to the unlocked state; When the moving rail (1) is moved to be closed, the acting member (5) is locked on the locking block (4) along the locking separation guiding portion (19), so as to drive the locking block (4) to rotate to the locking position.

9. The buffer mechanism of the drawer slide assembly according to claim 8, wherein: The buffer assembly (3) further includes a damper (20) and an elastic member (21). One end of both the damper (20) and the elastic member (21) 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 buffer mechanism of the drawer slide assembly according to claim 8, wherein: The acting member (5) is provided with an arc-shaped mating portion (22) that forms a point contact, line contact, or surface contact with the locking and separating guiding portion (19).

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