A slide rail

Abstract

The utility model belongs to the field of hardware, specifically a slide rail, comprising an upper rail, a bottom rail and a sliding assembly, the upper rail is surrounded by a first top wall, a first side wall and a second side wall to form a slide groove with an opening on the lower side, the bottom end of the first side wall is connected to a first supporting wall extending laterally; the bottom rail has a third side wall extending upward into the slide groove, the top end of the third side wall is connected to a second supporting wall extending laterally toward the first side wall; the sliding assembly comprises a first ball and a second ball assembled in the slide groove, the first ball is in rolling contact with the first top wall and the second supporting wall, and the second ball is in rolling contact with the first supporting wall and the second supporting wall; one end of the second supporting wall is provided with a first guide surface extending obliquely downward at a position corresponding to the second ball, the ball of the utility model avoids direct collision with the front end of the second supporting wall, eliminates abnormal noise, and prevents the ball from being injured.

Description

Technical Field

[0001] The utility model belongs to the field of hardware, in particular to a slide rail. Background Art

[0002] A slide rail is a hardware accessory commonly used in drawers to achieve pulling out and pulling out. A general slide rail includes an upper rail and a bottom rail. The upper rail is used to connect the drawer, and the bottom rail is assembled on the cabinet body. A sliding assembly is arranged in the upper rail. The sliding assembly mainly includes a retaining frame and a ball mounted on the retaining frame. The upper rail is sleeved on the bottom rail, and the bottom rail has a supporting surface located in the upper rail. The ball is rollably arranged between the supporting surface and the upper rail. The upper rail can slide back and forth relative to the bottom rail through the sliding assembly, thereby achieving pulling out or retracting. However, when the upper rail is pulled out, the ball at the outer end will be suspended, and because the drawer has a certain weight, as the contents increase, the upper rail will tilt downward after being pulled out, causing the ball to easily get stuck at the front end of the supporting surface when retracted, which not only makes a noise but also easily scratches the ball. Utility Model Content

[0003] The utility model aims to overcome the defect that the upper rail of the existing slide rail is easy to get stuck with the ball when it is retracted, and provides a slide rail which guides the ball by arranging a guide surface.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A slide rail comprises an upper rail, a bottom rail and a sliding assembly, wherein the upper rail is surrounded by a first top wall, a first side wall and a second side wall to form a slide groove with an opening on the lower side, and the bottom end of the first side wall is connected to a first supporting wall extending laterally; the bottom rail has a third side wall extending upward into the slide groove, and the top end of the third side wall is connected to a second supporting wall extending laterally toward the first side wall; the sliding assembly comprises a first ball and a second ball assembled in the slide groove, the first ball is in rolling contact with the first top wall and the second supporting wall, and the second ball is in rolling contact with the first supporting wall and the second supporting wall; one end of the second supporting wall is provided with a first guide surface extending obliquely downward at a position corresponding to the first ball.

[0006] Compared with the prior art, the slide rail provided by the utility model is provided with a first guide surface extending obliquely downward at the end of the second supporting wall, so that after the upper rail is pulled out, the first ball suspended at the outer end can roll back to the second supporting wall along the first guide surface when it is retracted, avoiding direct collision with the front end of the second supporting wall, eliminating abnormal noise, and preventing damage to the ball.

[0007] Furthermore, the second supporting wall is provided with a second guiding surface which extends obliquely downward at one end thereof which is opposite to the first guiding surface.

[0008] Furthermore, the inclination of the first guide surface is greater than the inclination of the second guide surface.

[0009] Furthermore, it also includes a damper, which includes a mounting frame installed on the bottom rail, an oil pipe fixedly arranged on the mounting frame, a guide block fixedly connected to the telescopic rod of the oil pipe, and a slider connected to the guide block. The mounting frame is located on the front side of the oil pipe and is provided with a guide seat. The guide seat extends along the extension direction of the telescopic rod and has a guide groove on the inner side and a guide convex edge on the outer side. The guide block is provided with a positioning pin inserted into the guide groove, and the slider is provided with a buckle slidably clamped on the guide convex edge. The upper rail is connected to the slider.

[0010] Furthermore, the mounting frame is provided with a locking position on the front side of the guide seat, the sliding block can be rotatably hinged on the positioning pin relative to the guide block, the guide protrusion extends laterally to the front end of the guide seat, and when the positioning pin slides to the front end of the guide groove, the sliding block can be controlled to rotate around the positioning pin under the push of the telescopic rod until it is locked in the locking position.

[0011] Furthermore, a slot is provided on the upper side of the sliding block, a bayonet is provided in the slot, and the bayonet is connected to a shifting block in contact with the upper rail.

[0012] Furthermore, the slot passes through the side of the slider to form an insertion opening, and the bayonet pin can be inserted into the slot laterally from the insertion opening.

[0013] Furthermore, the damper also includes a tension spring connecting the mounting frame and the guide block.

[0014] Furthermore, the sliding assembly also includes a bead rack arranged in the slide groove, and the bead rack includes a first retaining rack arranged between the first top wall and the second supporting wall for installing the first ball, and a second retaining rack arranged between the second supporting wall and the first supporting wall for installing the second ball, the first top wall is provided with a front push block located on the front side of the first retaining rack, and the second side wall is provided with a rear push block located on the rear side of the bead rack.

[0015] Furthermore, the bead rack is made of polyamide 6. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional diagram of the slide rail;

[0017] Figure 2 This is the main view of the slide rail;

[0018] Figure 3 is a schematic structural diagram of a first guide surface;

[0019] Figure 4 is a schematic structural diagram of the second guide surface;

[0020] Figure 5 is a schematic diagram of the structure of the damper;

[0021] Figure 6 and Figure 7 is the state diagram of the damper when the telescopic rod is retracted;

[0022] Figure 8 is the state diagram of the damper when the telescopic rod is extended;

[0023] Fig. 9 This is a structural diagram of the upper rail. DETAILED DESCRIPTION

[0024] A preferred specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0025] See also Figure 1 and Figure 2 The present embodiment provides a slide rail, including an upper rail 1, a bottom rail 2, a sliding assembly 3 and a damper 4. The upper rail 1 is surrounded by a first top wall 11, a first side wall 12 and a second side wall 13 to form a slide groove 14 with an opening at the lower side. The bottom end of the first side wall 12 is connected to a first supporting wall 15 extending laterally. The bottom rail 2 has a third side wall 21 extending upward into the slide groove 14. The top end of the third side wall 21 is connected to a second supporting wall 22 extending laterally toward the first side wall 12. The sliding assembly 3 includes a bead rack, a first ball 31 assembled in the slide groove 14, and a first ball 31 disposed on the bottom end of the first side wall 12. and the second ball 32, the bead rack includes a first retaining frame 33 arranged between the first top wall 11 and the second supporting wall 22 for mounting the first ball 31, and a second retaining frame 34 arranged between the second supporting wall 22 and the first supporting wall 15 for mounting the second ball 32, the first ball 31 is in rolling contact with the first top wall 11 and the second supporting wall 22, the second ball 32 is in rolling contact with the first supporting wall 15 and the second supporting wall 22, the upper rail 1 can slide back and forth relative to the bottom rail 2 through the sliding assembly 3, so as to be pulled out or retracted.

[0026] See also Figures 1 to 3 One end of the second supporting wall 22 is provided with a first guide surface 221 extending obliquely downward at a position corresponding to the first ball 31. Compared with the prior art, the slide rail provided by the utility model is provided with a first guide surface 221 extending obliquely downward at the end of the second supporting wall 22, so that the first ball 31 suspended at the outer end after the upper rail 1 is pulled out can roll back to the second supporting wall 22 along the first guide surface 221 when it is retracted, avoiding direct collision with the front end of the second supporting wall 22, eliminating abnormal noise, and preventing the ball from being hit.

[0027] See also Figure 4Preferably, the second supporting wall 22 is provided with a second guide surface 222 extending obliquely downward at one end relative to the first guide surface 221. As a specific implementation, the inclination of the first guide surface 221 is greater than the inclination of the second guide surface 222. The above-mentioned first guide surface 221 can be formed by bending the second supporting wall 22. Similarly, the first guide surface 221 can also be formed by bending, or by cutting. The setting of the second guide surface 222 facilitates the assembly of the slide rail to prevent the ball from hitting the rear end of the second supporting wall 22 and being damaged.

[0028] See also Figure 1 , Figures 5 to 8 The damper 4 includes a mounting frame 41 mounted on the bottom rail 2, an oil pipe 42 fixedly arranged on the mounting frame 41, a guide block 43 fixedly connected to the telescopic rod 46 of the oil pipe 42, and a slider 44 connected to the guide block 43. The mounting frame 41 is provided with a guide seat 45 at the front side of the oil pipe 42. The guide seat 45 extends along the extension direction of the telescopic rod 46. A guide groove 451 is provided on the inner side of the guide seat 45 and a guide convex edge 452 is provided on the outer side. The guide groove 451 and the guide convex edge 452 extend along the extension direction of the telescopic rod 46 respectively. The guide block 43 is provided with a positioning pin 431 inserted into the guide groove 451, and the slider 44 is provided with a buckle 441 slidably clamped on the guide convex edge 452. When the upper rail 1 is pulled out or retracted, the positioning pin 431 will be driven to slide along the guide groove 451, and the buckle 441 will slide along the guide convex edge 452. The above arrangement can ensure that the slider 44 is not easy to fall off during movement, is smoother, and has a more stable structure.

[0029] See also Figure 6 , Figure 7 and Figure 8 As an improved solution, the mounting frame 41 is provided with a snap-in position 411 at the front side of the guide seat 45, the slider 44 can be hinged on the positioning pin 431 rotatably relative to the guide block 43, the guide protrusion 452 extends transversely to the front end of the guide seat 45, when the positioning pin 431 slides to the front end of the guide groove 451, the slider 44 can be controlled to rotate around the positioning pin 431 under the push of the telescopic rod 46 to snap into the snap-in position 411. The front side refers to the side of the upper rail 1 pulled outward relative to the bottom rail 2, and the above arrangement can achieve a certain positioning effect after the upper rail 1 is fully pulled out.

[0030] See also Figure 5 A slot 442 is provided on the upper side of the slider 44, a bayonet 16 is provided in the slot 442, the bayonet 16 is connected to a shift block 444 in contact with the upper rail 1, the slot 442 passes through the side of the slider 44 to form an insertion port 443, and the bayonet 16 can be horizontally inserted into the slot 442 from the insertion port 443.

[0031] Referring to the figure, the damper 4 also includes a tension spring 47 connecting the mounting frame 41 and the guide block 43, thereby providing an effective damping effect, and under the action of the tension spring 47, the slider 44 can be effectively stuck in the locking position 411, so that the upper rail 1 is not easy to retract by itself.

[0032] The material of the above bead rack is polyamide 6, also known as PA6.

[0033] See also Fig. 9 The first top wall 11 is provided with a front push block 111 located at the front side of the first retaining frame 33, and the second side wall 13 is provided with a rear push block 131 located at the rear side of the bead frame. The above-mentioned push blocks are used to move the sliding assembly 3 when the upper rail 1 moves.

[0034] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A slide rail, characterized in that: include: The upper rail (1) is enclosed by a first top wall (11), a first side wall (12) and a second side wall (13) to form a slide groove (14) with an opening at the lower side, and the bottom end of the first side wall (12) is connected to a first supporting wall (15) extending laterally; The bottom rail (2) has a third side wall (21) extending upward into the slide groove (14), and the top end of the third side wall (21) is connected to a second supporting wall (22) extending laterally toward the first side wall (12); A sliding assembly (3), comprising a first ball (31) and a second ball (32) mounted in the slide groove (14), wherein the first ball (31) is in rolling contact with the first top wall (11) and the second supporting wall (22), and the second ball (32) is in rolling contact with the first supporting wall (15) and the second supporting wall (22); One end of the second supporting wall (22) is provided with a first guiding surface (221) extending obliquely downward at a position corresponding to the first rolling ball (31).

2. The slide rail according to claim 1, characterized in that: The second supporting wall (22) is provided with a second guiding surface (222) which extends obliquely downward at one end thereof which is opposite to the first guiding surface (221).

3. The slide rail according to claim 2, characterized in that: The inclination of the first guide surface (221) is greater than the inclination of the second guide surface (222).

4. The slide rail according to claim 1, characterized in that: The invention also comprises a damper (4), the damper (4) comprising a mounting frame (41) mounted on the bottom rail (2), an oil pipe (42) fixedly arranged on the mounting frame (41), a guide block (43) fixedly connected to a telescopic rod (46) of the oil pipe (42), and a slider (44) connected to the guide block (43); the mounting frame (41) is provided with a guide seat (45) at the front side of the oil pipe (42); the guide seat (45) extends along the extension direction of the telescopic rod (46); a guide groove (451) is provided on the inner side of the guide seat (45) and a guide convex edge (452) is provided on the outer side; the guide block (43) is provided with a positioning pin (431) inserted into the guide groove (451); the slider (44) is provided with a buckle (441) slidably clamped on the guide convex edge (452); and the upper rail (1) is connected to the slider (44).

5. The slide rail according to claim 4, characterized in that: The mounting frame (41) is provided with a locking position (411) at the front side of the guide seat (45); the sliding block (44) is hinged on the positioning pin (431) so as to be rotatable relative to the guide block (43); the guiding protrusion (452) extends transversely to the front end of the guide seat (45); when the positioning pin (431) slides to the front end of the guiding groove (451), the sliding block (44) can be controlled to rotate around the positioning pin (431) under the push of the telescopic rod (46) until it is locked in the locking position (411).

6. The slide rail according to claim 5, characterized in that: A slot (442) is provided on the upper side of the sliding block (44), a latch pin (16) is provided in the slot (442), and the latch pin (16) is connected to a shifting block (444) in contact with the upper rail (1).

7. The slide rail according to claim 6, characterized in that: The card slot (442) penetrates the side of the slider (44) to form an insertion opening (443), and the card pin (16) can be laterally inserted into the card slot (442) from the insertion opening (443).

8. The slide rail according to claim 4, characterized in that: The damper (4) also includes a tension spring (47) connecting the mounting frame (41) and the guide block (43).

9. The slide rail according to claim 1, characterized in that: The sliding assembly (3) also includes a bead rack arranged in the slide groove (14), and the bead rack includes a first retaining frame (33) arranged between the first top wall (11) and the second supporting wall (22) for mounting the first ball (31), and a second retaining frame (34) arranged between the second supporting wall (22) and the first supporting wall (15) for mounting the second ball (32), the first top wall (11) is provided with a front push block (111) located on the front side of the first retaining frame (33), and the second side wall (13) is provided with a rear push block (131) located on the rear side of the bead rack.

10. The slide rail according to claim 9, characterized in that: The bead rack is made of polyamide 6.

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