Display device support

Abstract

The utility model provides a display device support which is used for supporting a display device and fixedly installing the display device on a fixed object, and the display device support comprises a fixing part which is used for being fixed on the fixed object and is provided with a guide rail; the sliding mechanism comprises a sliding block and a bearing set fixedly installed in the sliding block, a plurality of balls are arranged on the bearing set, the bearing set is installed on the guide rail in a sliding mode, and the balls make contact with the guide rail and can rotate relative to the guide rail; and the at least one support arm is fixedly connected to the sliding block, so that the at least one support arm slides relative to the fixed part under the cooperation of the ball and the guide rail.

Description

Technical Field

[0001] The utility model relates to the field of display device brackets, and particularly to a slidable display device bracket. Background Art

[0002] In various usage scenarios such as work, electronic entertainment, life and study, a display screen is needed for viewing or working, and display device brackets that can be used to support the screen have emerged on the market. However, although the common brackets on the market have achieved multi-dimensional adjustment capabilities, such as free rotation up and down, left and right, and back and forth, they are often limited by their fixed installation method relative to the wall. While this design ensures stability, it also loses the flexibility of the space layout and the personalized needs of users. And the wall panel is often difficult to disassemble while taking into account reliability, and users cannot easily change the position of the display device bracket relative to the wall, resulting in a poor user experience. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a slidable display device bracket that can slide smoothly.

[0004] The present utility model provides a display device bracket for supporting a display device and fixedly installing the display device on a fixed object. The display device bracket includes: a fixing part for fixing to the fixed object and formed with a guide rail; a sliding mechanism including a sliding block and a bearing group fixedly installed in the sliding block, with a plurality of balls provided on the bearing group, the bearing group being slidably installed on the guide rail, and the balls being in contact with the guide rail and capable of rotating relative to the guide rail; and at least one bracket arm fixedly connected to the sliding block, so that under the cooperation of the balls and the guide rail, the at least one bracket arm slides relative to the fixing part.

[0005] Preferably, the bearing group includes two snap rings, a bearing, and a friction block. One end of the bearing is connected to the snap ring, the other end is connected to the friction block, and the other end of the friction block is connected to the other snap ring, and the bearing is slidably installed on the guide rail.

[0006] Preferably, a ball groove is formed inside the bearing, and the balls are embedded in the ball groove and in contact with the guide rail.

[0007] Preferably, the sliding mechanism further includes an adjusting screw inserted into the sliding block and capable of contacting the bearing group. The adjusting screw can be adjusted by rotation to enter the sliding block, so that the sliding block is positioned on the guide rail.

[0008] Preferably, the fixing part includes a wall panel and a limit plate, bosses are formed on both sides of the wall panel, a slide groove is formed in a depression in the middle position of the wall panel, the slide groove is located between the two bosses, a guide rail frame is formed by a protrusion in the middle of the slide groove, the guide rail is located on the guide rail frame, the limit plates are protrudingly installed on both sides of the slide groove, both ends of the guide rail are connected to the limit plates, the bottom of the sliding block is accommodated in the slide groove, and is slidably installed on the guide rail through the bearing group.

[0009] Preferably, the bracket arm includes a connecting member, a support arm, an adjusting member and a mounting plate which are connected in sequence, the support arm is fixedly connected to the sliding block via the connecting member, the support arm can rotate relative to the connecting member, the mounting plate is connected to the support arm via the adjusting member, the adjusting member can rotate relative to the support arm, and the mounting plate can rotate relative to the adjusting member.

[0010] Preferably, the connecting member comprises a first connecting member connected to the sliding block and a second connecting member connected to the supporting arm, and the second connecting member is rotatable relative to the first connecting member.

[0011] Preferably, the adjusting member includes a coupling member connected to the support arm, a second rotating member connected to the mounting plate, and a first rotating member for connecting the coupling member and the second rotating member, the first rotating member can rotate relative to the coupling member, the second rotating member can rotate relative to the first rotating member, and the rotation direction of the first rotating member is perpendicular to the rotation direction of the second rotating member.

[0012] A display device bracket is used to support a display device and fix the display device on a fixed object. The display device bracket comprises: a fixing portion, the fixing portion is used to be fixed on the fixed object; and at least two sliding mechanisms, at least two of the sliding mechanisms can slide independently relative to the fixing portion; and at least two bracket arms, at least two of the bracket arms are respectively installed on at least two of the sliding mechanisms, and at least two of the bracket arms can slide relative to the fixing portion through corresponding sliding mechanisms.

[0013] Preferably, the display device bracket also includes a guide rail, the sliding mechanism includes a sliding block and a bearing group fixedly installed in the sliding block, the bearing group is provided with a plurality of balls, the bearing group is slidably installed on the guide rail, and the balls are in contact with the guide rail and can rotate relative to the guide rail.

[0014] As described above, the display device bracket of the present utility model adopts a sliding mechanism with ball sliders, which improves the smoothness of sliding and overcomes the problem of stuck sliding in the existing design. The use of friction blocks in combination with adjusting screws improves the locking ability, allowing users to stop the bracket arm at any position, which is more convenient. Different numbers of bracket arms are combined with the sliding function. When multiple display screens are used, the depth from the wall and the horizontal spacing can be adjusted independently without affecting each other, meeting the user's various usage requirements in terms of angles and directions, and having higher practicality. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the display device bracket according to the present utility model installed on a fixed object.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the display device bracket according to the present utility model installed on a hanging member.

[0018] Figure 3 It is an exploded structural schematic diagram of the fixing part of the display device bracket according to the present utility model.

[0019] Figure 4 It is a cross-sectional schematic diagram of the sliding mechanism and the fixing part of the display device bracket according to the present utility model.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the sliding mechanism of the display device bracket according to the present utility model.

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the bracket arm of the display device bracket according to the present utility model.

[0022] Figure 7 It is an exploded structural schematic diagram of the adjusting member and the mounting plate of the display device bracket according to the present utility model.

[0023] Figure 8 It is a single-arm structural schematic diagram of the display device bracket according to the present utility model.

[0024] Main Element Symbol Explanation

[0025] 100 Display Device Bracket

[0026] 101 Fixed Object

[0027] 102 Hanging part

[0028] 10 Fixing part

[0029] 11 Wall panel

[0030] 13 Boss

[0031] 131 Fixing hole

[0032] 14 Slide groove

[0033] 141 Guide rail frame

[0034] 142 Guide rail

[0035] 15 Limit plate

[0036] 16 Protection shell

[0037] 161 Snap fastener

[0038] 30 Sliding mechanism

[0039] 31 Slide block

[0040] 311 Opening

[0041] 33 Bearing group

[0042] 331 Circlip

[0043] 333 Bearing

[0044] 3331 Ball groove

[0045] 3333 Ball

[0046] 335 Friction block

[0047] 337 Receiving space

[0048] 50 First support arm

[0049] 51 First connecting part

[0050] 53 Second connecting part

[0051] 531 Connecting seat

[0052] 55 Support arm

[0053] 551 Wire clamp

[0054] 57 Adjusting part

[0055] 571 Joining part

[0056] 5711 First main hole

[0057] 5713 First nut

[0058] 573 First rotating member

[0059] 5731 First secondary hole

[0060] 5733 Second main hole

[0061] 5735 Second nut

[0062] 575 Second rotating member

[0063] 5751 Second secondary hole

[0064] 59 Mounting plate

[0065] 60 Second support arm Detailed implementation manners

[0066] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0067] Please refer to Figure 1 and Figure 2 , the display device bracket 100 is fixedly installed on the wall surface (the fixture 101) and is used for installing a display device, such as a television, a computer, etc. In this embodiment, the display device bracket 100 includes a fixing portion 10, two sliding mechanisms 30, and a first support arm 50 and a second support arm 60. Specifically, the fixing portion 10 is fixed on the fixture 101 or the hanging member 102. In this embodiment, the hanging member 102 is a J-shaped hanging bracket. It can be understood that the hanging member 102 can also be a table clamp, etc. The two sliding mechanisms 30 are respectively slidably installed on the fixing portion 10 and can slide horizontally on the fixing portion 10. The first support arm 50 and the second support arm 60 are respectively connected to different sliding mechanisms 30, so that the first support arm 50 and the second support arm 60 can move independently relative to the fixing portion 10. It can be understood that there can be only one sliding mechanism 30, and the first support arm 50 and the second support arm 60 can be connected to the same sliding mechanism 30, so that the first support arm 50 and the second support arm 60 slide synchronously.

[0068] Please refer to Figure 3 and Figure 4, the main body of the fixing part 10 is a wall panel 11 in the shape of a rectangular plate. On both sides of the wall panel 11 near the long side, there are formed bosses 13. The bosses 13 are located between the long side edge and the middle part of the wall panel 11. A plurality of fixing holes 131 are provided on the bosses 13. The fixing part 10 is fixed to the fixed object 101 through the fixing holes 131 in cooperation with fixing parts such as screws. In the middle of the wall panel 11, a chute 14 is recessed. The chute 14 is located between the two bosses 13. On the bottom surface of the middle part of the chute 14, a guide rail frame 141 is protruded. At the top of the guide rail frame 141 away from the bottom surface of the chute 14, there is formed a concave part with an inward arc.

[0069] The fixing part 10 further includes a guide rail 142. The guide rail 142 is an elongated cylinder. The guide rail 142 is arranged in the concave part, and both ends of the guide rail 142 are respectively connected to the limiting plates 15. The side close to the wall panel 11 is completely embedded in the guide rail frame 141. The degree of inward concavity of the concave part is consistent with the bending degree of the guide rail 142. When the guide rail 142 is installed in the guide rail frame 141, the guide rail frame 141 is in complete contact with the guide rail 142. At both ends of the chute 14, there are provided limiting plates 15. The limiting plates 15 are used to fix both ends of the guide rail 142 to play a limiting role on the sliding mechanism 30, so as to prevent the sliding mechanism 30 from sliding out of the chute 14. In this embodiment, four protective shells 16 cover the wall panel 10. The four protective shells 16 are respectively installed at the four corners of the wall panel 10 and cover the four sides of the wall panel 10. The length of the side of the protective shell 16 away from the fixed object 101 is the same as the length from the boss 13 to the edge of the wall panel 10, so that the protective shell 10 covers the boss 13 and does not block the chute 14. On the one hand, the protective shell 16 is used to protect the internal mechanisms, and on the other hand, it covers the uneven surface of the wall panel 10, making it more beautiful. The four protective shells 16 are connected through buckles 161 and card slots (not shown in the figure).

[0070] Please refer to Figure 4 and Figure 5, the sliding mechanism 30 is slidably mounted on the guide rail 142 of the fixed part 10 and can slide along the guide rail 142. The sliding mechanism 30 includes a sliding block 31, a bearing group 33 disposed inside the sliding block 31, and an adjusting screw 35. Specifically, the sliding block 31 is in the shape of a cuboid, the bottom of which is received in the chute 14 and contacts the inner wall of the chute 14, so that the two bosses 13 limit the opposite two sides of the sliding block 31, and the sliding block 31 can only move horizontally. The bottom surface of the sliding block 31 is recessed toward the top surface of the sliding block 31 to form an installation space, and an opening 311 is formed on one side of the sliding block 31 close to the fixed part 10, and the installation space and the opening 311 communicate with each other. The bearing group 33 is installed in the installation space and includes two circlips 331, a friction block 335 and two bearings 333. A circlip 331, two bearings 333, a friction block 335, and another circlip 331 are sequentially installed in the installation space of the sliding block 31. One end of a bearing 333 is connected to the circlip 331, one end of the other bearing 333 is connected to the friction block 335, and the other end of the friction block 335 is connected to the other circlip 331. The circlip 331 is engaged in the slider 31, thereby connecting the bearing group 33 and the slider 31 together. A plurality of ball grooves 3331 are formed inside the bearing 333, and a plurality of balls 3333 are arranged in the plurality of ball grooves 3331 along the direction of the ball grooves 3331. The inner surface of the friction block 335 is flat and does not have ball grooves 3331 and balls 3333. When not sliding, it plays a role in increasing friction and reducing the shaking of the sliding mechanism 30. It can be understood that the number of bearings 333 can be one.

[0071] The bearing group 33 also forms an opening 311 in the same direction as the opening 311 of the slider 31. The inner wall of the bearing group 33 encloses a receiving space 337. When viewed from the side, the cross-section of the receiving space 337 is circular, and the cross-sectional diameter of the receiving space 337 is basically the same as the cross-sectional diameter of the guide rail 142. Thus, the guide rail 142 can enter the receiving space 337 through the opening 311, and the outer wall of the guide rail 142 contacts the balls 3333. When the sliding mechanism 30 slides, the balls 3333 rotate relative to the guide rail 142, thereby converting the planar sliding between the inner wall of the bearing 333 and the outer wall of the guide rail 142 into the curved surface sliding between the balls 3333 and the outer wall of the guide rail 142, reducing the friction force and making the sliding easier and more convenient.

[0072] The sliding mechanism 30 further includes an adjusting screw 35. When sliding is required, by rotating the adjusting screw 35, the adjusting screw 35 moves away from the guide rail 142, so that the adjusting screw 35 does not abut against the bearing group 33, and a gap is formed between the bearing group 33 and the guide rail 142, so that the sliding mechanism 30 can slide relative to the guide rail 142. When sliding is not required, by rotating the adjusting screw 35, the adjusting screw 35 moves towards the guide rail 142, so that the adjusting screw 35 abuts against the bearing group 33 and squeezes the bearing group 33 so that there is no gap between the bearing group 33 and the guide rail 142. At this time, the sliding mechanism 30 is locked and cannot slide relative to the guide rail 142. It can be understood that the position of the adjusting screw 35 can be located on the upper side or the lower side of the slider 31. It can be understood that the locking effect of the friction block 335 cooperating with the adjusting screw 35 is the best, and the adjusting screw 35 is preferably arranged above or below the friction block.

[0073] Please refer to Figure 6 , the support arms 50, 60 sequentially include a first connecting member 51, a second connecting member 53, a support arm 55, an adjusting member 57 and a mounting plate 59 from bottom to top. Specifically, the first connecting member 51 is fixed on the side of the slider 31 facing away from the installation space, and a first through hole (not shown in the figure) runs through the protruding part up and down. The second connecting member 53 is inserted into the first through hole of the connecting member 51, so that the second connecting member 53 can rotate in the left-right direction relative to the first connecting member 51. The second connecting member 53 extends away from the fixing part 10 to form a connecting seat 531, and the connecting seat 531 is formed with a second through hole (not shown in the figure) running through left and right. The screw passes through the lower end of the support arm 55 and the second through hole and is fixed, so that the support arm 55 is connected to the connecting seat 531, and the support arm 55 can rotate back and forth relative to the connecting seat 531. The other end of the support arm 55 is connected to the adjusting member 57, and the mounting plate 59 is connected to the support arm 55 through the adjusting member 57. The adjusting member 57 can drive the mounting plate 59 to achieve multi-angle adjustment.

[0074] In this embodiment, the support arm 55 is a single-arm structure, and a wire clip 551 is arranged thereon for accommodating a wire. It can be understood that the support arm 55 can also be a double-arm or multi-arm structure.

[0075] Please refer to Figure 7, which shows an exploded schematic view of the adjusting member 57 and the mounting plate 59. The adjusting member 57 includes an engaging member 571, a first rotating member 573, and a second rotating member 575. One end of the engaging member 571 is connected to the support arm 55, and the other end extends vertically and at intervals toward the side close to the first rotating member 573 to form two spaced portions (not labeled in the figure), and an intermediate space is formed between the two spaced portions. A first secondary hole 5731 is formed through one end of the first rotating member 573 close to the engaging member 571. The first rotating member 573 is inserted into the intermediate space, and the through directions of the first secondary hole 5731 and the first primary hole 5711 are the same, so that the first primary hole 5711 and the first secondary hole 5731 are aligned. At this time, the first nut 5713 passes through the first primary hole 5711 and the first secondary hole 5731, so that the first rotating member 573 and the engaging member 571 are connected together, and the first rotating member 573 can rotate left and right relative to the engaging member 571. A second primary hole 5733 is formed through one end of the first adapter member 573 close to the second connecting member 575, and the through direction of the second primary hole 5733 is perpendicular to the through direction of the first secondary hole 5731. A second secondary hole 5751 is provided at one end of the second rotating member 575 close to the first rotating member 573, and the through directions of the second secondary hole 5751 and the second primary hole 5733 are the same. The second rotating member 575 is brought close to the first rotating member 573 so that the second primary hole 5733 and the second secondary hole 5751 are aligned. At this time, the second nut passes through the second primary hole 5733 and the second secondary hole 5751, so that the first rotating member 573 and the second rotating member 575 are connected together, and the second rotating member 575 can rotate up and down relative to the first rotating member 573. The other end of the second rotating member 575 is directly connected to the mounting plate 59 and drives the mounting plate 59 to rotate.

[0076] Please refer to Figures 1-7 , in this embodiment, the display device bracket 100 has an independent double-arm structure, that is, it includes a first support arm 50 and a second support arm 60 that are independent of each other. Two sliding mechanisms 30 are provided on the sliding groove 14 of the fixing portion 10, and the first support arm 50 and the second support arm 60 are respectively connected to the two sliding mechanisms 30. In a usage scenario, the user can slide one of the sliding mechanisms 30 to one end of the sliding groove 14 and only operate the other sliding mechanism 30. In a second usage scenario, the user operates the two sliding mechanisms 30 simultaneously, so that the two screens fixed to the first support arm 50 and the second support arm 60 can be split and combined at any time. With the support arms 50 and 60 that can be adjusted at multiple angles, seamless splicing of the two screens can be achieved. In a third usage scenario, when the screens are combined, the support arm 55 is perpendicular to the fixing portion 10, and at this time, the distance between the screen and the fixed object 200 is the smallest. In a fourth usage scenario, the fixing portion 10 is not directly fixed to the fixed object 200, but is fixed by means of a hanging member, such as Figure 2, the mounting plates 59 of the first support arm 50 and the second support arm 50 can be turned in opposite directions respectively, which can be used by users in different directions or by multiple users. The above only shows some usage scenarios of the double-arm structure, and its usage mode is not limited to this. It can be understood that the number of support arms of the display device support 100 and the number of sliding mechanisms 30 are not limited to two, and can be a multi-arm structure such as a three-arm structure.

[0077] When connecting two screens or even multiple screens, the weight borne by the display device support 100 increases significantly. In some multi-screen supports, sheet metal wall panels are used, and the insufficient strength results in unsmooth sliding and rotation. In this embodiment, a sliding structure with balls 3333 cooperating with the guide rail 142 is adopted, and the strength of the wall panel 11 is enhanced, making the sliding smoother.

[0078] Please refer to Figure 8 , which shows the structure of a single-arm and single-sliding mechanism of the display device support 100. At this time, there is only one sliding mechanism 30 in the chute 14 of the fixing part 10, and the sliding mechanism 30 is only connected to one support arm 50, 60. Compared with the double-arm or multi-arm display device support 100, the length of the chute 14 can be smaller, and the weight of the display device support 100 is lighter, meeting the user's needs that only sliding use is required and multi-screen sharing is not needed.

[0079] When connecting a single screen or multiple screens, the sliding mechanism 30 and the support arms 50, 60 are independent of each other when adjusting the position of the display device. The user adjusts the horizontal distance between multiple display devices by moving the sliding mechanism 30, and adjusts the depth of the display device from the wall through the support arms 50, 60. Therefore, the adjustment of the horizontal distance and the depth from the wall of the display device support 100 are independent of each other and do not affect each other. That is, when adjusting the support arms 50, 60, the sliding mechanism 30 can move or not move according to the user's needs, and when adjusting the sliding mechanism 30, the support arms 50, 60 can be adjusted or not adjusted according to the user's needs.

[0080] The display device support 100 of the present utility model adopts a sliding mechanism 30 of a ball slider, which improves the smoothness of sliding. The locking ability is improved by using the friction block 335 in cooperation with the adjusting screw 35. Different numbers of support arms 50, 60 cooperate with the sliding function to meet various user needs, and the practicability is higher.

[0081] So far, the technical solutions of the present utility model have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present utility model.

Claims

1. A display device bracket for supporting a display device and fixedly mounting the display device on a fixture, characterized in that, The display device bracket includes: A fixing part, which is used to be fixed to the fixed object and is formed with a guide rail; A sliding mechanism, which includes a sliding block and a bearing group fixedly installed in the sliding block. A number of balls are arranged on the bearing group, and the bearing group is slidably installed on the guide rail, and the balls are in contact with the guide rail and can rotate relative to the guide rail; and At least one bracket arm, which is fixedly connected to the sliding block. Thus, under the cooperation of the balls and the guide rail, the at least one bracket arm slides relative to the fixing part.

2. The display device bracket according to claim 1, wherein The bearing group includes two circlips, a bearing and a friction block. One end of the bearing is connected to the circlip, the other end is connected to the friction block, and the other end of the friction block is connected to the other circlip. The bearing is slidably installed on the guide rail.

3. The display device bracket according to claim 2, wherein A ball groove is formed inside the bearing, and the balls are embedded in the ball groove and are in contact with the guide rail.

4. The display device bracket according to claim 1, wherein The sliding mechanism further includes an adjusting screw. The adjusting screw is inserted into the sliding block and can contact the bearing group. The adjusting screw can be adjusted by rotation to enter the sliding block, so that the sliding block is positioned on the guide rail.

5. The display device bracket according to claim 1, wherein The fixing part includes a wall plate and a limiting plate. Protrusions are formed on both sides of the wall plate, and a chute is recessed in the middle position of the wall plate. The chute is located between the two protrusions, and a guide rail frame protrudes in the middle of the chute. The guide rail is located on the guide rail frame. The limiting plate is prominently installed on both sides of the chute, and both ends of the guide rail are connected to the limiting plate. The bottom of the sliding block is received in the chute and is slidably installed on the guide rail through the bearing group.

6. The display device bracket according to claim 5, wherein The bracket arm includes a connecting piece, a support arm, an adjusting piece and a mounting plate connected in sequence. The support arm is fixedly connected to the sliding block through the connecting piece, and the support arm can rotate relative to the connecting piece. The mounting plate is connected to the support arm through the adjusting piece. The adjusting piece can rotate relative to the support arm, and the mounting plate can rotate relative to the adjusting piece.

7. The display device bracket according to claim 6, wherein The connecting piece includes a first connecting piece connected to the sliding block and a second connecting piece connected to the support arm. The second connecting piece can rotate relative to the first connecting piece.

8. The display device bracket according to claim 7, wherein The adjusting piece includes a joint piece connected to the support arm, a second rotating piece connected to the mounting plate, and a first rotating piece for connecting the joint piece and the second rotating piece. The first rotating member is capable of rotating relative to the engaging member, the second rotating member is capable of rotating relative to the first rotating member, and the rotation direction of the first rotating member is perpendicular to the rotation direction of the second rotating member.

9. A display device bracket is used to support a display device and fixedly mount the display device on a fixture, and is characterized in that The display device bracket includes: a fixing portion for fixing to the fixed object; and at least two sliding mechanisms capable of sliding relative to the fixing portion independently of each other; and at least two bracket arms respectively mounted on at least two of the sliding mechanisms, at least two of the bracket arms being capable of sliding relative to the fixing portion through the corresponding sliding mechanisms.

10. The display device bracket according to claim 9, wherein the display device bracket further includes a guide rail, the sliding mechanism includes a sliding block and a bearing set fixedly installed in the sliding block, a plurality of balls are provided on the bearing set, the bearing set is slidably installed on the guide rail, and the balls are in contact with the guide rail and capable of rotating relative to the guide rail.

Images