Multifunctional steel ball sliding rail

Abstract

The invention discloses a multifunctional steel ball sliding rail which comprises a first ball nest frame and a second ball nest frame, the first ball nest frame is arranged between a fixed sliding rail and a middle rail in a sliding mode, and the second ball nest frame is arranged between an inner rail and the middle rail in a sliding mode. Rolling pieces are embedded in the first ball nest frame and the second ball nest frame in the horizontal direction and the vertical direction in a rolling mode, and the movable sliding rail slides in the fixed sliding rail through the rolling pieces. Compared with a traditional sliding rail which slides only through balls, the sliding rail has the advantages that the idler wheels provide larger contact surfaces, stress is more uniform, when the sliding rail is opened or closed, operation is smoother, and the sliding rail has high durability and bearing capacity; the balls are arranged on the two sides of the first ball nest frame, and due to the structural layout, when the sliding rail is flatly installed and used, all the balls participate in bearing balance of the sliding rail, and more stable product performance is provided.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture slide rails, in particular to a multifunctional steel ball slide rail. Background Art

[0002] A slide rail is a track along which moving parts slide. It is typically grooved, with rollers, balls, or sliders fixed to the ends of the moving parts. By snapping the sliders, rollers, or balls into the grooves of the track, they slide within the grooves, moving the moving parts along the rails. Ball bearing slides use steel balls as bearings. A bead nest (also called a "ball seat") is embedded within the outer rail to secure the steel balls on both sides. The rails are secured with brackets, and the moving parts are fixed to the rails. The rolling motion of the steel balls causes the moving parts to slide back and forth. Slide rails are commonly used on sliding objects such as soundproofing panels, baffles, cabinets, and drawers. Slide rails are also commonly used as the connecting component for sliding partitions.

[0003] Existing ball bearing slides are typically two- or three-section metal slides. The most common type is a structure that is installed on the side of a drawer, making installation simple and space-saving. Three-section slides include a fixed rail (also known as a "fixed rail"), an intermediate rail (also known as a "middle rail"), and a movable rail (also known as an "inner rail"). The fixed rail is fixed to the side walls of the furniture cabinet and drawer, where they slide relative to each other. The intermediate rail serves as a bearing rail and is positioned between the fixed and movable rails, extending their extended length. A ball bearing device is typically located between the movable and intermediate rails. The device includes a ball bearing seat with two rows of ball limiting holes on either side of the seat, each containing balls. The movable rail is supported on the intermediate rail by two rows of balls on the ball bearing seat, which move synchronously with the sliding of the movable rail and the rolling of the balls.

[0004] Due to its structural limitations, the existing slide rails are more suitable for side mounting (i.e., the slide rails are installed on the side of the load). In situations where flat mounting is required (i.e., the slide rails are installed on the bottom of the load), their adaptability is poor. The main reasons are: the number of balls and the arrangement of the ball positions in the slide rails are unreasonable. The bottom of the steel ball slideway is hollow, and it is impossible for all balls to bear the load together. As a result, some balls are overloaded for a long time, and the steel balls are easily stuck, which not only affects the smoothness of the slide rail, but also is not conducive to improving durability and load-bearing capacity, resulting in a short service life of the slide rail. For example: the existing three-section ball slide rail, this design is often used for side installation. When used for flat installation, when the ball assembly slides back and forth between the fixed slide rail and the movable slide rail, due to the effect of gravity, the ball assembly often cannot operate completely according to the original design during sliding, resulting in the ball assembly in different slide rails and the fixed slide rail and the movable slide rail often having asynchrony problems, causing the equipment to slide unevenly or even get stuck; furthermore, in order to reduce wear during operation, the fixed slide rail, the movable slide rail and the ball assembly are only connected point to point. When the accumulated gap between the fixed slide rail, the movable slide rail and the ball assembly is large, the slide rail will shake to varying degrees in three dimensions during operation, thereby generating friction, and the ball assembly is easy to slide down on its own under the action of gravity, and the ball assembly will hit the slide rail, thereby generating noise.

[0005] The Chinese utility model patent with the announcement number CN107830055B discloses an eight-guide-groove solid heavy-duty load-bearing slide rail, comprising an outer rail, a middle rail and an inner rail which are slidably connected in sequence from the outside to the inside, wherein the inner rail, the middle rail and the outer rail are all solid structures, and further comprising a first rolling frame arranged between the inner rail and the middle rail and a second rolling frame arranged between the middle rail and the outer rail; the outer guide groove of the inner rail is opposite to the inner guide groove of the middle rail, and the outer guide groove of the inner rail and the inner guide groove of the middle rail cooperate to form a first rolling frame. The side rollers roll along the channel; the middle rail outer guide groove is opposite to the outer rail inner guide groove, and the middle rail outer guide groove and the outer rail inner guide groove cooperate to form a channel for the second side roller to roll along; the inner rail outer bottom guide groove and the middle rail inner bottom guide groove are opposite to each other vertically, and the inner rail outer bottom guide groove and the middle rail inner bottom guide groove cooperate to form a channel for the first bottom roller to roll along; the middle rail outer bottom guide groove and the outer rail inner bottom guide groove are opposite to each other vertically, and the middle rail outer bottom guide groove and the outer rail inner bottom guide groove cooperate to form a channel for the second bottom roller to roll along. However, the ball contact surface of this patent is small, the force is not evenly distributed, and it still shakes when used flat.

[0006] For the same slide rail, the load-bearing points are completely different when it is used in a flat or side-mounted manner. Existing products lack a ball bearing slide rail that can be used smoothly in both flat and side-mounted situations. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a multifunctional steel ball slide rail. When the steel ball slide rail is used in a flat or side-mounted manner, the steel balls and rollers are in a frontal force-bearing state, thereby achieving better stability and smoothness.

[0008] In order to solve the above technical problems, the present invention provides a multifunctional steel ball slide rail, which includes a fixed slide rail and a movable slide rail installed in it and movable relative to it. The movable slide rail includes a middle rail and an inner rail, and also includes a first bead nest frame and a second bead nest frame. The first bead nest frame is slidably arranged between the fixed slide rail and the middle rail, and the second bead nest frame is slidably arranged between the inner rail and the middle rail. The first bead nest frame and the second bead nest frame are both embedded with rolling elements in the horizontal and vertical directions, and the movable slide rail slides in the fixed slide rail through the rolling elements.

[0009] In a further solution, an extension portion is provided on the outer side wall of the middle rail, and the extension portion is horizontally arranged and opposite to the inner top wall and bottom wall of the fixed slide rail.

[0010] In a further solution, a plurality of first rollers are rollingly embedded in the top surfaces of the side ends on both sides of the first bead nest rack, the inner top wall of the fixed slide rail is opposite to the upper wall of the extension portion of the middle rail, forming a first slideway, and the first rollers slide in the first slideway; the first rollers are in rolling contact with the fixed slide rail and the middle rail on the first side.

[0011] In a further solution, a plurality of second rollers are embedded in the side surfaces of the side ends on both sides of the first bead nest rack for rolling, the inner side wall of the fixed slide rail is opposite to the outer side wall of the middle rail to form a second slideway, and the second rollers slide in the second slideway; the second rollers are in rolling contact with the fixed slide rail and the middle rail on the second side portion, and the second side portion is orthogonal to the first side portion.

[0012] According to a further solution, a plurality of third rollers are rollingly embedded in the bottom plate of the first bead nest rack, and the inner bottom wall of the fixed slide rail is opposite to the lower wall of the extended portion of the middle rail to form a third slideway, and the third rollers slide in the third slideway; the third rollers are in rolling contact with the fixed slide rail and the middle rail.

[0013] According to a further solution, a plurality of fourth rollers are rollingly embedded in the bottom plate of the second bead nest rack, the inner top wall of the inner rail is opposite to the outer top wall of the middle rail, forming a fourth slideway, and the fourth rollers slide in the fourth slideway; the fourth rollers are in rolling contact with the middle rail and the inner rail.

[0014] According to a further solution, a plurality of balls are rollingly embedded in the second side ends on both sides of the second bead nest rack, the inner wall of the middle rail is provided with a first slide groove along the length direction, and the outer wall of the inner rail is provided with a second slide groove along the length direction, the first slide groove is opposite to the second slide groove to form a fifth slide channel, and the balls slide in the fifth slide channel; the balls are in rolling contact with the middle rail and the inner rail in both the horizontal and vertical directions.

[0015] In a further solution, a limit block is provided on the tail end of the middle rail, and the limit block limits the travel of the second bead nest rack.

[0016] A further solution also includes a clip and a stop member, wherein the clip is elastically arranged on the inner top wall of the inner rail, and the stop member is fixedly arranged on the inner wall of the head end of the middle rail. The clip has a first anti-slip portion, and the stop member has a second anti-slip portion. The first anti-slip portion cooperates with the second anti-slip portion to limit the travel of the inner rail.

[0017] The implementation of the present invention has the following beneficial effects: Compared to traditional slides that slide only by ball bearings, the rollers of the present invention provide a larger contact surface and more uniform force, making the operation smoother when opening or closing the slide. It has strong durability and load-bearing capacity. The present invention is suitable for drawers with heavy-duty steel ball bearing slide structures such as 51, 53, 57, and 76 mm. The balls are arranged on both sides of the first ball nest. This structural layout allows each ball to participate in the load balance of the slide rail when the slide rail is used flat, providing more stable product performance. The multifunctional steel ball slide rail can be used for flat installation or side installation. The outer rail and the middle rail, as well as the middle rail and the inner rail are slidably connected by the first bead nest frame and the second bead nest frame respectively. When flat installation is performed, the first roller and the third roller in the first bead nest frame can bear the weight of the middle rail at the same time, disperse the pressure to prevent the middle rail from being deformed due to excessive concentration of gravity; the fourth roller in the second bead nest frame bears the weight of the inner rail, disperses the pressure to prevent the inner rail from being deformed due to excessive concentration of weight; at the same time, the second roller and the ball bearings also play a role in balancing the middle rail and the inner rail; when side installation is performed, the second roller in the first bead nest frame bears the weight of the middle rail, and the balls in the second bead nest frame bear the weight of the inner rail, disperse the pressure to prevent the middle rail and the inner rail from being deformed due to excessive concentration of weight; at the same time, the first roller, the third roller and the fourth roller also play a role in balancing the middle rail and the inner rail. The simultaneous use of rollers and balls effectively avoids the phenomenon of the balls being stuck when the slide rail is flat installed; The gravity in the vertical and horizontal directions of the slide rail is dispersed, reducing the cumulative gap between components due to uneven force, effectively reducing the shaking between components, and thus reducing the noise of the slide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a multifunctional steel ball slide rail according to an embodiment of the present invention; Figure 2 is a cross-sectional view of a multifunctional steel ball slide rail according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the channel structure of a multifunctional steel ball slide rail according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a slide rail and a rolling element when a multifunctional steel ball slide rail is flat-packed according to an embodiment of the present invention; Figure 5 This is a schematic structural diagram of a first ball nest frame of a multifunctional steel ball slide rail according to an embodiment of the present invention; Figure 6 This is a front view of a first ball nest frame of a multifunctional steel ball slide rail according to an embodiment of the present invention; Figure 7 This is a schematic structural diagram of a second ball nest frame of a multifunctional steel ball slide rail according to an embodiment of the present invention; Figure 8 This is a schematic structural diagram of an inner rail and a clamping member of a multifunctional steel ball slide rail according to an embodiment of the present invention; Figure 9 This is a schematic structural diagram of a middle rail and a stop member of a multifunctional steel ball slide rail according to an embodiment of the present invention; In the picture: 1. Fixed slide rail; 11. First slide; 12. Second slide; 13. Third slide; 2. Movable slide rail; 21. Middle rail; 211. Extension; 212. First slide groove; 213. Limit block; 22. Inner rail; 221. Second slide groove; 23. Fourth slide; 24. Fifth slide; 3. First bead nest; 31. First roller; 32. Second roller; 33. Third roller; 4. Second bead nest; 41. Fourth roller; 42. Ball; 5. Clamp; 51. First anti-slip portion; 6. Stop member; 61. Second anti-slip portion. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0020] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that each technical feature and the overall technical solution of the present invention can be understood intuitively and vividly, but they should not be understood as limiting the scope of protection of the present invention.

[0021] In the description of the present invention, any reference to directional descriptions, such as "upper," "lower," "front," "back," "left," and "right," indicating directions or positional relationships, is based on the directions or positional relationships shown in the accompanying drawings. These are intended solely to facilitate description and simplify the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. When a feature is referred to as being "disposed," "fixed," or "connected" to another feature, it may be disposed, fixed, or connected to the other feature directly or indirectly.

[0022] In the description of the present invention, the term "several" shall mean one or more, and the term "plurality" shall mean more than two. The terms "greater than," "less than," and "exceed" shall be understood as excluding the number indicated, while the terms "above," "below," and "within" shall be understood as including the number indicated. The terms "first" and "second" shall be understood as distinguishing technical features and shall not be understood as indicating or implying relative importance, or as implicitly specifying the number of the indicated technical features, or as implicitly specifying the order of the indicated technical features.

[0023] In addition, unless otherwise defined, the technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art. The terms used in the present invention are only for describing specific embodiments and are not intended to limit the present invention. It should be understood that when used in this specification and the appended claims, the terms "comprise" and "include" indicate the presence of the described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their combinations.

[0024] like Figure 1-4As shown, a multifunctional steel ball bearing slide includes a fixed rail 1 and a movable rail 2 mounted therein and movable relative thereto. The movable rail 2 includes a middle rail 21 and an inner rail 22, as well as a first bead nest frame 3 and a second bead nest frame 4. The first bead nest frame 3 slides between the fixed rail 1 and the middle rail 21, while the second bead nest frame 4 slides between the inner rail 22 and the middle rail 21. The first bead nest frame 3 and the second bead nest frame 4 are embedded with rolling elements in both the horizontal and vertical directions, and the movable rail 2 slides within the fixed rail 1 via the rolling elements. Compared to traditional slides that slide only via balls 42, the rollers provide a larger contact surface and more uniform force distribution, making operation smoother when opening or closing the slide, and providing greater durability and load-bearing capacity. The balls 42 are arranged on both sides of the first bead nest frame 3. This structural layout allows each ball 42 to participate in the load-bearing balance of the slide when the slide is installed flat, providing more stable product performance. The multifunctional steel ball slide rail can be used for flat installation or side installation. The outer rail and the middle rail 21 as well as the middle rail 21 and the inner rail 22 are slidably connected via the first bead nest frame 3 and the second bead nest frame 4 respectively.

[0025] like Figure 2-7As shown, the outer wall of the middle rail 21 has an extension 211, which is horizontally arranged and opposite to the inner top and bottom walls of the fixed rail 1. A plurality of first rollers 31 are rollingly embedded in the top surfaces of the side ends on both sides of the first bead nest 3. The inner top wall of the fixed rail 1 is opposite to the upper wall of the extension 211 of the middle rail 21, forming a first slide 11, and the first rollers 31 slide in the first slide 11; the first rollers 31 are in rolling contact with the fixed rail 1 and the middle rail 21 on the first side, that is, in the vertical direction when flat-packed. A plurality of second rollers 32 are rollingly embedded in the side ends of the side ends on both sides of the first bead nest 3. The inner side wall of the fixed rail 1 is opposite to the outer wall of the middle rail 21, forming a second slide 12, and the second rollers 32 slide in the second slide 12; the second rollers 32 are in rolling contact with the fixed rail 1 and the middle rail 21 on the second side, that is, in the horizontal direction when flat-packed; the second side is orthogonal to the first side. The bottom plate of the first bead nest 3 is rollingly embedded with a plurality of third rollers 33. The inner bottom wall of the fixed rail 1 opposes the lower wall of the extension 211 of the middle rail 21, forming a third slideway 13. The third rollers 33 slide within the third slideway 13. When the ball bearing slide is installed flat, the third rollers 33 roll in contact with both the fixed rail 1 and the middle rail 21 in a vertical direction. The bottom plate of the second bead nest 4 is rollingly embedded with a plurality of fourth rollers 41. The inner top wall of the inner rail 22 opposes the outer top wall of the middle rail 21, forming a fourth slideway 23. The fourth rollers 41 slide within the fourth slideway 23. When the ball bearing slide is installed flat, the fourth rollers 41 roll in contact with both the middle rail 21 and the inner rail 22 in a vertical direction. A plurality of balls 42 are rollingly embedded in the second side ends on both sides of the second bead nest frame 4, the inner side wall of the middle rail 21 is provided with a first slide groove 212 along the length direction, and the outer side wall of the inner rail 22 is provided with a second slide groove 221 along the length direction. The first slide groove 212 is opposite to the second slide groove 221 to form a fifth slideway 24, and the balls 42 slide in the fifth slideway 24; the balls 42 are in rolling contact with the middle rail 21 and the inner rail 22 in both the horizontal and vertical directions.When installed flat, the first roller 31 and the third roller 33 in the first bead nest frame 3 can simultaneously bear the weight of the middle rail 21, disperse the pressure to prevent the middle rail 21 from being deformed due to excessive gravity concentration, and the fourth roller 41 in the second bead nest frame 4 bears the weight of the inner rail 22, disperses the pressure to prevent the inner rail 22 from being deformed due to excessive gravity concentration, and at the same time, the second roller 32 and the ball 42 also play a role in balancing the middle rail 21 and the inner rail 22; when installed sideways, the second roller 32 in the first bead nest frame 3 bears the weight of the middle rail 21, and the ball 42 in the second bead nest frame 4 It bears the weight of the inner rail 22 and disperses the pressure to prevent deformation caused by excessive concentration of weight on the middle rail 21 and the inner rail 22. At the same time, the first roller 31, the third roller 33 and the fourth roller 41 also balance the middle rail 21 and the inner rail 22. The use of rollers and balls 42 at the same time effectively avoids the phenomenon of the balls 42 being stuck when the slide rail is installed flat. The gravity in the vertical and horizontal directions of the slide rail is dispersed, reducing the cumulative gap between the components due to uneven force, effectively reducing the shaking between the components, and thus reducing the noise of the slide rail.

[0026] like Figure 8 and 9 As shown, a limit block 213 is provided on the tail end of the middle rail 21, and the limit block 213 limits the travel of the second bead nest frame 4. The clamping member 5 is elastically provided on the inner top wall of the inner rail 22, and the stop member 6 is fixedly provided on the inner wall of the head end of the middle rail 21. The clamping member 5 has a first anti-slip portion 51, and the stop member 6 has a second anti-slip portion. The first anti-slip portion 51 cooperates with the second anti-slip portion to limit the travel of the inner rail 22.

[0027] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of rights covered by the present invention.

Claims

1. A multifunctional steel ball slide rail, comprising a fixed slide rail (1) and a movable slide rail (2) mounted therein and movable relative thereto, wherein the movable slide rail (2) comprises a middle rail (21) and an inner rail (22), characterized in that: The invention also comprises a first bead nest frame (3) and a second bead nest frame (4), wherein the first bead nest frame (3) is slidably arranged between the fixed slide rail (1) and the middle rail (21), and the second bead nest frame (4) is slidably arranged between the inner rail (22) and the middle rail (21), and the first bead nest frame (3) and the second bead nest frame (4) are both embedded with rolling elements for rolling in the horizontal direction and the vertical direction, and the movable slide rail (2) slides in the fixed slide rail (1) through the rolling elements.

2. A multifunctional steel ball slide rail according to claim 1, characterized in that: An extension portion (211) is provided on the outer side wall of the middle rail (21), and the extension portion (211) is arranged horizontally and is opposite to the inner top wall and bottom wall of the fixed slide rail (1).

3. The multifunctional steel ball slide rail according to claim 2, characterized in that: A plurality of first rollers (31) are rollingly embedded in the top surfaces of the side ends of both sides of the first bead nest frame (3); the inner top wall of the fixed slide rail (1) is opposite to the upper wall of the extension portion (211) of the middle rail (21), forming a first slideway (11); the first rollers (31) slide in the first slideway (11); the first rollers (31) are in rolling contact with the fixed slide rail (1) and the middle rail (21) on the first side.

4. The multifunctional steel ball slide rail according to claim 3, characterized in that: A plurality of second rollers (32) are rollingly embedded in the side surfaces of the side ends of both sides of the first bead nest frame (3); the inner side wall of the fixed slide rail (1) is opposite to the outer side wall of the middle rail (21), forming a second slideway (12); the second rollers (32) slide in the second slideway (12); the second rollers (32) are in rolling contact with the fixed slide rail (1) and the middle rail (21) on the second side portion, and the second side portion is orthogonal to the first side portion.

5. The multifunctional steel ball slide rail according to claim 2, characterized in that: A plurality of third rollers (33) are rollingly embedded in the bottom plate of the first bead nest frame (3); the inner bottom wall of the fixed slide rail (1) is opposite to the lower wall of the extension portion (211) of the middle rail (21), forming a third slideway (13); the third rollers (33) slide in the third slideway (13); and the third rollers (33) are in rolling contact with the fixed slide rail (1) and the middle rail (21).

6. The multifunctional steel ball slide rail according to claim 1, characterized in that: A plurality of fourth rollers (41) are rotatably embedded in the bottom plate of the second bead nest frame (4); the inner top wall of the inner rail (22) is opposite to the outer top wall of the middle rail (21), forming a fourth slideway (23); the fourth rollers (41) slide in the fourth slideway (23); and the fourth rollers (41) are in rolling contact with the middle rail (21) and the inner rail (22).

7. The multifunctional steel ball slide rail according to claim 1, characterized in that: A plurality of balls (42) are rollingly embedded in the second side ends of both sides of the second bead nest frame (4); a first slide groove (212) is provided on the inner side wall of the middle rail (21) along the length direction; a second slide groove (221) is provided on the outer side wall of the inner rail (22) along the length direction; the first slide groove (212) and the second slide groove (221) are opposite to each other to form a fifth slideway (24); the balls (42) slide in the fifth slideway (24); the balls (42) are in rolling contact with the middle rail (21) and the inner rail (22) in both the horizontal and vertical directions.

8. The multifunctional steel ball slide rail according to claim 1, characterized in that: A limiting block (213) is provided on the tail end of the middle rail (21), and the limiting block (213) limits the travel of the second bead nest frame (4).

9. A multifunctional steel ball slide rail according to any one of claims 1 to 8, characterized in that: The invention also includes a clamping member (5) and a stop member (6), wherein the clamping member (5) is elastically arranged on the inner top wall of the inner rail (22), and the stop member (6) is fixedly arranged on the inner wall of the head end of the middle rail (21), the clamping member (5) has a first anti-slip portion (51), and the stop member (6) has a second anti-slip portion, and the first anti-slip portion (51) cooperates with the second anti-slip portion to limit the travel of the inner rail (22).

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