Two-section buffer sliding rail

Abstract

The utility model discloses a two-section buffer slide rail, which comprises a fixed rail, a sliding rail, a sliding rail, a sliding rail and a sliding rail, the buffer base is connected to the bottom side of the fixed rail, a sliding block is slidably connected to the interior of the buffer base in the length direction of the rail, a buffer is arranged on the buffer base, and the movable end of the buffer is connected to the sliding block; the wheel carrier is arranged on the outer side of the track in a sleeving mode, a plurality of balls are arranged between the wheel carrier and the track, and the balls protrude out of the wheel carrier outwards; the movable rail is arranged on the outer side of the wheel frame in a sleeved mode, the balls abut against the inner side of the movable rail, a transmission piece is connected to the outer side of the movable rail, and the movable rail can drive the transmission piece to be connected with or disengaged from the sliding block when moving in a reciprocating mode relative to the fixed rail. When the movable rail is about to be pushed in place, the buffer function can be provided, the stroke needed by the buffer is reduced, and therefore the overall size is effectively controlled, and the overall practicability is improved.

Description

Technical Field

[0001] The utility model relates to a slide rail, in particular to a two-section buffer slide rail. Background Art

[0002] A two-section slide rail includes a fixed rail and a movable rail. A carriage is also arranged between the fixed rail and the movable rail, which can extend the sliding stroke of the movable rail relative to the fixed rail. In order to buffer the movement of the movable rail, currently, devices such as buffer dampers are directly connected between the movable rail and the fixed rail. However, due to the large stroke of the movable rail, the required buffer damper stroke is large, resulting in a large volume of the entire slide rail and making it difficult to install the slide rail. Therefore, there is an urgent need for a slide rail with a small volume and a buffer function. Content of the Utility Model

[0003] The purpose of the utility model is to provide a two-section buffer slide rail to solve one or more technical problems in the prior art and at least provide a beneficial alternative or create conditions.

[0004] The solution of the utility model to solve its technical problems is as follows:

[0005] A two-section buffer slide rail includes: a fixed rail, with an upwardly convex track on one side; a buffer base, connected to the bottom side of the fixed rail. A slider is slidably connected in the buffer base along the length direction of the track. A buffer is arranged on the buffer base, and the movable end of the buffer is connected to the slider; a wheel frame, sleeved outside the track. A plurality of ball bearings are arranged between the wheel frame and the track, and the plurality of ball bearings respectively protrude outward from the wheel frame; a movable rail, sleeved outside the wheel frame. The plurality of ball bearings abut against the inner side of the movable rail. A transmission member is connected to the outside of the movable rail. When the movable rail reciprocates relative to the fixed rail, the transmission member can be driven to connect or disengage from the slider.

[0006] The technical solution has at least the following beneficial effects: During installation, the fixed rail is fixedly installed inside the cabinet of the peripheral device, while the movable rail is fixed to the bottom side of the peripheral drawer. When in use, pushing or pulling the drawer can drive the movable rail and the wheel frame to move relative to the fixed rail, and multiple balls can support the wheel frame and the movable rail, enabling the movable rail and the wheel frame to slide smoothly on the fixed rail. When the movable rail is pushed in, the movable rail is in a state of being received above the fixed rail. As the movable rail is about to slide into place, the movable rail drives the transmission member to be connected to the slider. At this time, the movable rail and the slider slide together, and the buffer buffers the movement of the slider, thereby providing a buffering effect when the movable rail is received, effectively reducing the impact on the cabinet when the drawer is pushed in. When the movable rail is pulled out, the slider first pulls out the movable end of the buffer. As the movable rail is pulled outwards, the transmission member disengages from the slider, and at this time, the restriction on the movable rail is released, and the movable rail can be quickly pulled out. Thus, by providing a transmission member and a slider on the movable rail that are mutually disengaged and engaged, a buffering function can be provided when the movable rail is about to be pushed in place, reducing the required stroke of the buffer, thereby effectively controlling the overall volume and improving the overall practicality.

[0007] As a further improvement of the above technical solution, the transmission member includes a connection section, a first elastic section, and a second elastic section that are connected in sequence downward. The connection section is connected to the movable rail. The first elastic section extends obliquely downward in the direction close to the movable rail, and the second elastic section extends obliquely downward in the direction away from the movable rail. On both sides of the second elastic section, the slider is respectively provided with a blocking protrusion and a guiding protrusion. The height of the blocking protrusion is greater than the height of the guiding protrusion. The top surface of the guiding protrusion is inclined downward in the direction away from the blocking protrusion. One end of the guiding protrusion facing the second elastic section is provided with an oblique cut angle. A notch is provided at a position on the outer side of the buffer base facing the blocking protrusion. The connection section is used to be fixed on the movable rail. When the movable rail drives the transmission member to approach the slider, the second elastic section is guided along the inclined top surface of the guiding protrusion, crosses the guiding protrusion and enters between the blocking protrusion and the guiding protrusion. At this time, the blocking protrusion can block the movement of the first elastic section and the second elastic section. As the movable rail continues to be pushed in, the slider can be driven to slide, thereby realizing the buffering when the movable rail is pushed in. When it is necessary to pull the movable rail outwards, the second elastic section moves to the oblique cut angle, and under the restriction of the guiding protrusion and the inner side wall of the buffer base, the second elastic section cannot cross the guiding protrusion. At this time, the slider can be driven to move outwards, and the movable end of the buffer can be moved outwards. When the second elastic section moves to the notch, under the condition of releasing the restriction of the inner side wall of the buffer base, the second elastic section crosses the guiding protrusion along the guidance of the oblique cut angle, thereby realizing the separation from the slider.

[0008] As a further improvement of the above technical solution, a spring is connected between the buffer base and the slider, and the spring has a tendency to pull the slider away from the notch. When the movable rail is pulled outwards, the spring is elastically stretched. When the movable rail is pushed in, the spring can provide an elastic force to the slider to assist the inward pushing of the movable rail and ensure that the movable rail moves in place.

[0009] As a further improvement of the above technical solution, the buffer is a hydraulic buffer cylinder. When the movable rail is pushed in, by driving the slider to act on the hydraulic buffer cylinder, a buffering effect on the movable rail can be achieved.

[0010] As a further improvement of the above technical solution, a slideway is provided on the top side of the buffer base. A chute is provided on the top side of the slideway along the length direction of the fixed rail. An avoidance groove is provided at the position of the slider facing the chute, and a limiting convex block is provided at the position of the slider facing the chute. The slider is connected to the chute of the buffer base through its avoidance groove, so as to realize the sliding limitation on the buffer base. And a limiting convex block is also provided on the bottom side of the slider to cooperate with the chute on the slideway, further improving the sliding stability of the slider on the buffer base.

[0011] As a further improvement of the above technical solution, the inner side wall of the wheel frame is in the shape of a regular hexagon, the outer side wall of the wheel frame is in the shape of a rounded rectangle. A plurality of mounting holes are respectively provided along the length direction at the four corner positions of the wheel frame. A straight notch is provided at the bottom side of the wheel frame, and the track passes through the straight notch. A plurality of the balls are respectively arranged in the plurality of mounting holes. At each corner of the wheel frame, since the inner side wall of the corner of the wheel frame is a plane and the outer side wall is an arc surface, the thickness at each corner position of the wheel frame is increased in this way, which can improve the stability of the balls at the mounting hole position, thereby improving the stability of the relative movement of the movable rail and the wheel frame with respect to the fixed rail.

[0012] As a further improvement of the above technical solution, arc-shaped grooves are respectively provided at the positions of the track facing the four corners of the wheel frame, and the balls are abutted in the arc-shaped grooves. The arc-shaped grooves can increase the contact area for limiting the balls, thereby improving the sliding stability of the balls on the wheel frame.

[0013] As a further improvement of the above technical solution, the buffer base is detachably connected to the bottom side of the fixed rail. The buffer base can be disassembled and assembled from the fixed rail, so as to facilitate the maintenance of structures such as the slider and the buffer on the buffer base.

[0014] As a further improvement of the above technical solution, a hook is provided on the top side of one end of the movable rail. When the movable rail is installed on the drawer, the hook can be clamped on the outer side wall of the drawer, so as to quickly connect and position the drawer and the movable rail.

[0015] As a further improvement of the above technical solution, anti - detachment protrusions are respectively arranged at both ends of the fixed rail. The anti - detachment protrusions can be used to limit the moving stroke of the wheel frame and effectively prevent the wheel frame from disengaging from the fixed rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly describe the drawings required for use in the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present utility model, rather than all embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts.

[0017] Figure 1 is the overall three - dimensional view of the present utility model.

[0018] Figure 2 is the three - dimensional view of the buffer base of the present utility model.

[0019] Figure 3 is the front view of the wheel frame of the present utility model.

[0020] In the drawings: 1 - fixed rail, 11 - rail, 12 - anti - detachment protrusion, 2 - buffer base, 21 - slider, 211 - blocking protrusion, 212 - guiding protrusion, 22 - buffer, 23 - notch, 24 - spring, 25 - slideway, 251 - chute, 3 - wheel frame, 31 - ball, 4 - movable rail, 41 - transmission part, 42 - hook. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present utility model in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative efforts all fall within the scope of protection of the present utility model. In addition, all the connection relationships mentioned in the text do not simply refer to the direct connection of components, but refer to the more optimal connection structure that can be formed according to the specific implementation situation by adding or reducing connection accessories. The various technical features in the present invention can be combined with each other without conflicting with each other.

[0022] Refer to Figure 1 And Figure 2, A two-stage buffer slide rail, comprising: a fixed rail 1, with an upwardly protruding track 11 provided on one side thereof; a buffer base 2, connected to the bottom side of the fixed rail 1, a slider 21 is slidably connected in the buffer base 2 along the length direction of the track 11, a buffer 22 is provided on the buffer base 2, and the movable end of the buffer 22 is connected to the slider 21; a wheel frame 3, sleeved outside the track 11, a plurality of balls 31 are provided between the wheel frame 3 and the track 11, and the plurality of balls 31 respectively protrude outwards from the wheel frame 3; a movable rail 4, sleeved outside the wheel frame 3, the plurality of balls 31 abut against the inner side of the movable rail 4, and a transmission member 41 is connected to the outside of the movable rail 4. When the movable rail 4 reciprocates relative to the fixed rail 1, the transmission member 41 can be driven to connect or disconnect from the slider 21.

[0023] In this two-stage buffer slide rail, during installation, the fixed rail 1 is installed and fixed in an external cabinet, while the movable rail 4 is fixed to the bottom side of an external drawer. When in use, pushing or pulling the drawer can drive the movable rail 4 and the wheel frame 3 to move relative to the fixed rail 1. The plurality of balls 31 can support the wheel frame 3 and the movable rail 4, enabling the movable rail 4 and the wheel frame 3 to slide smoothly on the fixed rail 1. When the movable rail 4 is pushed in, the movable rail 4 is in a state of being received on the top side of the fixed rail 1. As the movable rail 4 is about to slide into place, the movable rail 4 drives the transmission member 41 to connect to the slider 21. At this time, the movable rail 4 and the slider 21 slide together, and the movement of the slider 21 is buffered by the buffer 22, thereby providing a buffering effect when the movable rail 4 is received, effectively reducing the impact on the cabinet when the drawer is pushed in. When the movable rail 4 is pulled out, the slider 21 first pulls out the movable end of the buffer 22. As the movable rail 4 is pulled outwards, the transmission member 41 disengages from the slider 21. At this time, the restriction on the movable rail 4 is released, and the movable rail 4 can be quickly pulled out. Thus, by providing the transmission member 41 and the slider 21 on the movable rail 4 to engage and disengage with each other, a buffering function can be provided when the movable rail 4 is about to be pushed into place, reducing the required stroke of the buffer 22, thereby effectively controlling the overall volume and improving the overall practicality.

[0024] The transmission member 41 can be disengaged from the slider 21 by means such as snap connection and magnetic connection. In this embodiment, the transmission member 41 includes a connection section, a first elastic section, and a second elastic section connected in sequence downward. The connection section is connected to the movable rail 4. The first elastic section extends obliquely downward in the direction close to the movable rail 4. The second elastic section extends obliquely downward in the direction away from the movable rail 4. On both sides of the second elastic section, the slider 21 is respectively provided with a blocking protrusion 211 and a guiding protrusion 212. The height of the blocking protrusion 211 is greater than the height of the guiding protrusion 212. The top surface of the guiding protrusion 212 slopes downward in the direction away from the blocking protrusion 211. One end of the guiding protrusion 212 facing the second elastic section is provided with an oblique cutting angle. A notch 23 is provided at a position on the outer side of the buffer base 2 facing the blocking protrusion 211. The connection section is used to be fixed on the movable rail 4. When the movable rail 4 drives the transmission member 41 to approach the slider 21, the second elastic section guides along the inclined top surface of the guiding protrusion 212, crosses over the guiding protrusion 212 and enters between the blocking protrusion 211 and the guiding protrusion 212. At this time, the blocking protrusion 211 can block the movement of the first elastic section and the second elastic section. As the movable rail 4 is further pushed in, the slider 21 can be driven to slide, so as to realize the buffering when the movable rail 4 is pushed in. When it is necessary to pull the movable rail 4 outwards, the second elastic section moves to the oblique cutting angle. Under the restriction of the guiding protrusion 212 and the inner side wall of the buffer base 2, the second elastic section cannot cross over the guiding protrusion 212. At this time, the slider 21 can be driven to move outwards, and the movable end of the buffer 22 can be moved outwards. When the second elastic section moves to the notch 23, under the condition of releasing the restriction of the inner side wall of the buffer base 2, the second elastic section crosses over the guiding protrusion 212 along the guidance of the oblique cutting angle, so as to realize the separation from the slider 21.

[0025] Further, a spring 24 is connected between the buffer base 2 and the slider 21. The spring 24 has a tendency to pull the slider 21 away from the notch 23. When the movable rail 4 is pulled outwards, the spring 24 is elastically stretched. When the movable rail 4 is pushed in, the spring 24 can provide an elastic force to the slider 21 to assist the inward pushing of the movable rail 4 and ensure that the movable rail 4 moves in place.

[0026] In some embodiments, the buffer 22 is a hydraulic buffer cylinder, that is, a hydraulic device. When the movable rail 4 is pushed in, by driving the slider 21 to act on the hydraulic buffer cylinder, the buffering effect on the movable rail 4 can be achieved.

[0027] For a specific structural embodiment of the slider 21 sliding on the buffer base 2, a slideway 25 is provided on the top side of the buffer base 2. A chute 251 is provided along the length direction of the fixed rail 1 on the top side of the slideway 25. An avoidance groove is provided at the position of the slider 21 facing the chute 251, and a limiting lug is provided at the position of the slider 21 facing the chute 251. The slider 21 is connected to the chute 251 of the buffer base 2 through its avoidance groove, thereby realizing the sliding limitation on the buffer base 2. Moreover, a limiting lug is also provided on the bottom side of the slider 21 to cooperate with the chute 251 on the slideway 25, further improving the stability of the slider 21 sliding on the buffer base 2.

[0028] To improve the stability of the installation of the ball 31 on the wheel carrier 3, as Figure 3 shown, in this embodiment, the inner side wall of the wheel carrier 3 is in the shape of a regular hexagon, the outer side wall of the wheel carrier 3 is in the shape of a rounded rectangle, a plurality of mounting holes are respectively provided along its length direction at the four corner positions of the wheel carrier 3, a straight notch is provided at the bottom side of the wheel carrier 3, and the track 11 passes through the straight notch. A plurality of the balls 31 are respectively arranged in a plurality of the mounting holes. At each corner of the wheel carrier 3, since the inner side wall of the corner of the wheel carrier 3 is a plane and the outer side wall is an arc surface, the thickness at each corner position of the wheel carrier 3 is increased in this way, which can improve the stability of the ball 31 at the mounting hole position, thereby improving the stability of the relative movement of the movable rail 4 and the wheel carrier 3 with respect to the fixed rail 1.

[0029] Furthermore, arc-shaped grooves are respectively provided at the positions of the track 11 facing the four corners of the wheel carrier 3, and the balls 31 are abutted against the arc-shaped grooves. The arc-shaped grooves can increase the contact area for limiting the balls 31, thereby improving the stability of the balls 31 sliding on the wheel carrier 3.

[0030] In some embodiments, the buffer base 2 is detachably connected to the bottom side of the fixed rail 1. The buffer base 2 can be disassembled and assembled from the fixed rail 1, thereby facilitating the maintenance of structures such as the slider 21 and the buffer 22 on the buffer base 2.

[0031] In some embodiments, a hook 42 is provided on the top side of one end of the movable rail 4. When installing the movable rail 4 to the drawer, the hook 42 can be clamped to the outer side wall of the drawer, thereby quickly connecting and positioning the drawer and the movable rail 4.

[0032] In some embodiments, anti-disengagement protrusions 12 are respectively provided at both ends of the fixed rail 1. The anti-disengagement protrusions 12 can be used to limit the movement stroke of the wheel carrier 3, effectively preventing the wheel carrier 3 from disengaging from the fixed rail 1.

[0033] The above has specifically described the preferred embodiments of the present utility model, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present utility model, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A two-stage buffer slide rail, characterized in that: Comprising: A fixed rail (1) with an upwardly convex track (11) provided on one side thereof; A buffer base (2) connected to the bottom side of the fixed rail (1). A slider (21) is slidably connected in the buffer base (2) along the length direction of the track (11). A buffer (22) is provided on the buffer base (2), and the movable end of the buffer (22) is connected to the slider (21); A wheel carrier (3) sleeved outside the track (11). A plurality of balls (31) are provided between the wheel carrier (3) and the track (11), and the plurality of balls (31) respectively protrude outward from the wheel carrier (3); A movable rail (4) sleeved outside the wheel carrier (3). The plurality of balls (31) abut against the inner side of the movable rail (4). A transmission member (41) is connected to the outside of the movable rail (4). When the movable rail (4) reciprocates relative to the fixed rail (1), the transmission member (41) can be driven to connect or disengage from the slider (21).

2. The double - stage buffer slide rail according to claim 1, characterized in that: The transmission member (41) includes a connecting section, a first elastic section and a second elastic section connected in sequence downward. The connecting section is connected to the movable rail (4). The first elastic section extends obliquely downward in a direction close to the movable rail (4). The second elastic section extends obliquely downward in a direction away from the movable rail (4). Blocking protrusions (211) and guiding protrusions (212) are respectively provided on both sides of the slider (21) where the second elastic section is located. The height of the blocking protrusion (211) is greater than the height of the guiding protrusion (212). The top surface of the guiding protrusion (212) slopes downward in a direction away from the blocking protrusion (211). An oblique cutting angle is provided at one end of the guiding protrusion (212) facing the second elastic section. A notch (23) is provided on the outside of the buffer base (2) at a position facing the blocking protrusion (211).

3. The double - stage buffer slide rail according to claim 2, wherein: A spring (24) is connected between the buffer base (2) and the slider (21), and the spring (24) has a tendency to pull the slider (21) away from the notch (23).

4. A two-stage buffer slide rail according to claim 1, characterized in that: The buffer (22) is a hydraulic buffer cylinder.

5. A two-stage buffer slide rail according to claim 1, wherein: A slideway (25) is provided on the top side of the buffer base (2). A chute (251) is provided on the top side of the slideway (25) along the length direction of the fixed rail (1). An avoidance groove is provided at the position of the slider (21) facing the chute (251), and a limiting convex block is provided at the position of the slider (21) facing the chute (251).

6. The double - stage buffer slide rail according to claim 1, wherein: The inner side wall shape of the wheel carrier (3) is a regular hexagon, and the outer side wall shape of the wheel carrier (3) is a rounded rectangle. A plurality of mounting holes are respectively provided on the wheel carrier (3) at four corner positions along its length direction. A straight notch is provided at the bottom side of the wheel carrier (3), and the track (11) passes through the straight notch. The plurality of balls (31) are respectively arranged in the plurality of mounting holes.

7. A two-stage buffer slide rail according to claim 4, characterized in that: Arc-shaped grooves are respectively provided at the positions of the track (11) facing the four corners of the wheel carrier (3), and the balls (31) abut against the arc-shaped grooves.

8. The double - stage buffer slide rail according to claim 1, characterized in that: The buffer base (2) is detachably connected to the bottom side of the fixed rail (1).

9. The two-stage buffer slide rail according to claim 1, wherein: A catch (42) is provided on the top side at one end of the movable rail (4).

10. A two-stage buffer slide rail according to claim 1, characterized in that: Anti - detachment protrusions (12) are respectively provided at both ends of the fixed rail (1).

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