Telescopic assembly and height support device
By introducing a combination structure of anti-rotation rod and anti-rotation component into the circular tube design, the problem of rotation of the circular lifting rod during the lifting process is solved, achieving stable lifting and lowering and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BESTQI INNOVATION TECH (SHENZHEN) CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-14
Smart Images
Figure CN224483330U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of support device technology, specifically to a telescopic component and a height support device. Background Technology
[0002] In existing height-adjustable devices such as single-column height-adjustable desks, in order to avoid relative rotation between the lifting rods during the lifting process, some height-adjustable devices use square lifting rods. The shape of square lifting rods is monotonous, which is difficult to meet the needs of users in some occasions where there are special requirements for appearance.
[0003] Some lifting devices use circular lifting rods. Circular lifting rods are prone to relative rotation during lifting, requiring multiple ball bearing slide rails inside to achieve guiding and anti-rotation limiting functions, which increases manufacturing costs. Utility Model Content
[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a telescopic component that can use a circular tube while reducing the manufacturing cost of the telescopic component.
[0005] This utility model also proposes a height support device having the above-mentioned telescopic components.
[0006] According to a first aspect embodiment of the present invention, a telescopic assembly includes a first circular tube, an anti-rotation rod, an anti-rotation member, and a second circular tube. The first circular tube has a first port at one end along the axial direction. The anti-rotation rod extends axially into the interior of the first circular tube and is fixedly connected to it. The anti-rotation member is movably sleeved on the anti-rotation rod along the axial direction. A first anti-rotation structure is provided between the anti-rotation member and the anti-rotation rod, the first anti-rotation structure being used to restrict the rotation of the anti-rotation member about the axis of the anti-rotation rod. The second circular tube is movably inserted axially into the first circular tube and is movably sleeved on the anti-rotation rod. The second circular tube and the anti-rotation member are fixedly connected. The second circular tube can partially extend out of the first circular tube through the first port.
[0007] The telescopic assembly according to the embodiments of this utility model has at least the following beneficial effects: by setting both the first and second round tubes as round tubes, it meets the different requirements of users for the appearance of the telescopic assembly; by setting the anti-rotation rod to extend axially along the first round tube and fixedly connected to the first round tube, and setting the second round tube to be fixedly connected to the anti-rotation member and movably inserted into the first round tube, and the second round tube and the anti-rotation member to be movably sleeved on the anti-rotation rod, the second round tube and the anti-rotation member can move synchronously along the axial direction relative to the first round tube and the anti-rotation rod. By setting a first anti-rotation structure between the anti-rotation member and the anti-rotation rod, the first anti-rotation structure can restrict the rotation of the anti-rotation member around the axis of the anti-rotation rod, thereby restricting the rotation of the anti-rotation member relative to the anti-rotation rod, and thus restricting the rotation of the second round tube relative to the first round tube. Compared with the telescopic assembly in the related art that uses multiple ball bearing slide rails to achieve anti-rotation limiting, the telescopic assembly of this application embodiment can restrict the rotation of the second round tube relative to the first round tube through the first anti-rotation structure between the anti-rotation rod and the anti-rotation member, resulting in lower manufacturing costs.
[0008] According to some embodiments of the present invention, the anti-rotation member is provided with an anti-rotation hole, and the anti-rotation rod passes through the anti-rotation hole;
[0009] The anti-rotation rod includes a first anti-rotation surface extending axially, and the wall of the anti-rotation hole includes a second anti-rotation surface, which slidably contacts the first anti-rotation surface; wherein the first anti-rotation surface and the second anti-rotation surface cooperate to form a first anti-rotation structure.
[0010] According to some embodiments of the present invention, the anti-rotation member is connected to one end of the second round tube located inside the first round tube; the anti-rotation member includes a connected end and an annular circumference, the annular circumference surrounding the outer circumferential surface connected to the end; one end of the second round tube is inserted into the inner ring of the annular circumference, or the annular circumference is inserted into the interior of the second round tube.
[0011] According to some embodiments of the present invention, a first snap-fit portion is provided on the annular periphery, and a second snap-fit portion is provided on the outer peripheral wall of the second circular tube. The first snap-fit portion snaps into the second snap-fit portion. One of the first snap-fit portion and the second snap-fit portion is a snap-fit protrusion, and the other is a snap-fit groove adapted to the snap-fit protrusion.
[0012] According to some embodiments of the present invention, the outer peripheral wall of the second circular tube and the inner peripheral wall of the first circular tube are spaced apart; the telescopic assembly further includes an annular limiting member connected to one end of the first circular tube near the first port; the outer peripheral wall of the second circular tube slidably contacts the inner peripheral wall of the annular limiting member, and the outer peripheral wall of the annular portion slidably contacts the inner peripheral wall of the first circular tube; the annular limiting member is partially located on the movement path of the annular portion and is used to block the annular portion.
[0013] According to some embodiments of the present invention, the first circular tube has a second port at one end facing away from the first port along the axial direction; the telescopic assembly also includes a positioning member connected to the second port; and the anti-rotation rod is fixedly connected to the positioning member at one end facing the second port.
[0014] According to some embodiments of the present invention, the positioning member has an anti-rotation groove recessed on the side facing the first port, and one end of the anti-rotation rod is inserted into the anti-rotation groove; a second anti-rotation structure is provided between the anti-rotation groove and the anti-rotation rod, the second anti-rotation structure is used to limit the rotation of the anti-rotation rod around the axis; the groove wall of the anti-rotation groove includes a third anti-rotation surface, the third anti-rotation surface contacts the first anti-rotation surface; wherein, the first anti-rotation surface and the third anti-rotation surface cooperate to form the second anti-rotation structure.
[0015] According to some embodiments of the present invention, the positioning member has a fixing hole that extends through the axial direction and is connected to the anti-rotation groove; the telescopic assembly also includes a locking member that passes through the fixing hole and is threaded to the anti-rotation rod, for locking the anti-rotation rod to the positioning member.
[0016] According to some embodiments of the present invention, the telescopic assembly further includes a power component, which is disposed inside the second circular tube and connected to the anti-rotation rod; the drive end of the power component is connected to the second circular tube; the power component is used to drive the second circular tube to move relative to the first circular tube and can lock the relative position of the second circular tube and the first circular tube.
[0017] The height support device according to a second aspect embodiment of the present invention includes a telescopic component base and a support platform as described in any of the above embodiments, wherein a first circular tube is connected to the base and the support platform is connected to a second circular tube.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0020] Figure 1 A partial structural schematic diagram of the height support device provided in an embodiment of this utility model is shown;
[0021] Figure 2 It shows Figure 1 Schematic diagram of the cross-sectional structure of the medium-height support device;
[0022] Figure 3 It shows Figure 2 Enlarged structural diagram at point III;
[0023] Figure 4 A schematic diagram of the anti-rotation component provided in an embodiment of this utility model is shown;
[0024] Figure 5 It shows Figure 2 Enlarged structural diagram at point V;
[0025] Figure 6 It shows Figure 2 Enlarged structural diagram of section VI.
[0026] Figure label:
[0027] Height support device 10;
[0028] Telescopic assembly 100; first circular tube 110; first port 111; second port 113; anti-rotation rod 130; first anti-rotation surface 131; anti-rotation component 150; end 151; anti-rotation hole 1510; second anti-rotation surface 1511; annular periphery 153; snap-fit protrusion 1530; second circular tube 170; snap-fit groove 171; annular limiting component 190; positioning component 210; anti-rotation groove 211; third anti-rotation surface 2110; fixing hole 213; locking component 230; power component 250;
[0029] Base 300; Axis X. Detailed Implementation
[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0034] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0035] Please see Figure 1 This application provides a height support device 10, which can be a single-column lifting table, a multi-column lifting table, a microphone telescopic bracket, or other telescopic height support device.
[0036] The height support device 10 includes a telescopic component 100, a base 300, and a support platform. The base 300 and the support platform can be connected to opposite ends of the telescopic component 100 along the telescopic direction. The telescopic component 100 can adjust the distance between the support platform and the base 300 through telescopic movement.
[0037] Support platforms can refer to tabletops, mounting racks (such as microphone mounts), or other support platforms.
[0038] Please see Figures 2 to 3 In some embodiments, the telescopic assembly 100 includes a first circular tube 110, an anti-rotation rod 130, an anti-rotation member 150, and a second circular tube 170.
[0039] The first circular tube 110 and the second circular tube 170 are both circular tubes, that is, the cross-sectional shape of the first circular tube 110 and the second circular tube 170 is roughly circular, so as to meet the different requirements of users for the appearance of the telescopic component 100.
[0040] The first circular tube 110 has a first port 111 at one end along the axial direction X, and the axial direction X can be set in the same direction as the telescopic component 100.
[0041] The anti-rotation rod 130 extends along the axial direction X inside the first circular tube 110 and is fixedly connected to the first circular tube 110, so that the position between the anti-rotation rod 130 and the first circular tube 110 can be relatively fixed to prevent the anti-rotation rod 130 from moving relative to the first circular tube 110.
[0042] The anti-rotation rod 130 and the first round tube 110 can be fixedly connected by welding, snap-fitting, bonding, or by fasteners. The fasteners can be screws, bolts, rivets, etc.
[0043] The anti-rotation element 150 is movably sleeved on the anti-rotation rod 130 along the axial direction X, and the anti-rotation element 150 can move along the axial direction X on the anti-rotation rod 130.
[0044] The second circular tube 170 is movably inserted into the first circular tube 110 along the axial direction X, and is movably sleeved on the anti-rotation rod 130, so that the second circular tube 170 can move relative to the first circular tube 110 and the anti-rotation rod 130 along the axial direction X.
[0045] As an example, the anti-rotation rod 130 may extend through the anti-rotation member 150 and partially through the second round tube 170. The anti-rotation rod 130 may be spaced apart from the inner wall of the second round tube 170 to avoid contact friction.
[0046] The second round tube 170 and the anti-rotation member 150 are fixedly connected, so that the positions of the second round tube 170 and the anti-rotation member 150 are relatively fixed to avoid relative movement between the second round tube 170 and the anti-rotation member 150. The second round tube 170 and the anti-rotation member 150 can move synchronously along the axial direction X relative to the first round tube 110 and the anti-rotation rod 130.
[0047] The second round tube 170 and the anti-rotation component 150 can be fixedly connected by welding, snap-fitting, bonding, or by fasteners.
[0048] The second circular tube 170 can extend partially through the first port 111 out of the first circular tube 110 to adjust the distance between the support platform and the base 300 by telescoping. Specifically, the first circular tube 110 is connected to the base 300, and the support platform is connected to the second circular tube 170. The second circular tube 170 can extend partially through the first port 111 out of the first circular tube 110 to increase the distance between the support platform and the base 300, and the second circular tube 170 can retract partially through the first port 111 into the first circular tube 110 to decrease the distance between the support platform and the base 300.
[0049] As an example, the end of the first round tube 110 facing away from the first port 111 can be fixedly connected to the base 300, and the end of the second round tube 170 extending out of the second port 113 can be connected to the support platform.
[0050] A first anti-rotation structure is provided between the anti-rotation member 150 and the anti-rotation rod 130. This first anti-rotation structure restricts the rotation of the anti-rotation member 150 around the axis of the anti-rotation rod 130, thereby limiting the rotation of the anti-rotation member 150 relative to the anti-rotation rod 130. This, in turn, restricts the rotation of the second circular tube 170 relative to the first circular tube 110, helping to prevent the second circular tube 170 from rotating relative to the first circular tube 110 during its extension and retraction. This contributes to a more stable extension and retraction movement of the second circular tube 170 relative to the first circular tube 110. Compared to telescopic components in related technologies that use multiple ball bearing slide rails for anti-rotation limiting, the telescopic component 100 of this embodiment can limit the rotation of the second circular tube 170 relative to the first circular tube 110 simply by using the first anti-rotation structure between the anti-rotation rod 130 and the anti-rotation member 150, resulting in lower manufacturing costs.
[0051] The extension direction of the anti-rotation rod 130 can be set in the same direction as the axial direction X.
[0052] Please see Figures 2 to 4 In some embodiments, the anti-rotation member 150 may be provided with an anti-rotation hole 1510 (e.g., Figure 4 As shown, the anti-rotation rod 130 can be inserted into the anti-rotation hole 1510, that is, the anti-rotation member 150 can be movably sleeved on the anti-rotation rod 130 through the anti-rotation hole 1510.
[0053] The anti-rotation bar 130 includes a first anti-rotation surface 131 extending along the axial direction X.
[0054] The hole wall of the anti-rotation hole 1510 includes a second anti-rotation surface 1511, which slidably contacts the first anti-rotation surface 131. The first anti-rotation surface 131 and the second anti-rotation surface 1511 cooperate to form a first anti-rotation structure. In this way, the anti-rotation rod 130 and the anti-rotation member 150 can be mutually restricted by the first anti-rotation surface 131 and the second anti-rotation surface 1511 to restrict the rotation of the anti-rotation member 150 around the axis of the anti-rotation rod 130. Thus, the anti-rotation rod 130 and the anti-rotation member 150 can mutually restrict each other to restrict the rotation of the second round tube 170 relative to the first round tube 110.
[0055] It should be noted that the shapes of the anti-rotation hole 1510 and the anti-rotation rod 130 can be matched, that is, the shapes of the first anti-rotation surface 131 and the second anti-rotation surface 1511 can also be matched.
[0056] The first anti-rotation surface 131 and the second anti-rotation surface 1511 can be either a plane or an arc surface.
[0057] As an example, the anti-rotation rod 130 can be a square tube. The square rod can include four first planes that are connected end to end and extend along the axial direction X. Any one of the four first planes can serve as the first anti-rotation surface 131. The anti-rotation hole 1510 can be a square hole that matches the shape of the square rod. In this case, the second anti-rotation surface 1511 is also planar, which will not be described further.
[0058] As another example, the anti-rotation rod 130 can be an elliptical rod with an elliptical cross-section, and the elliptical outer circumferential surface of the elliptical rod can serve as the first anti-rotation surface 131. The anti-rotation hole 1510 can be an elliptical hole adapted to the shape of the elliptical rod, and the circular inner surface of the elliptical hole can serve as the second anti-rotation surface 1511.
[0059] As another example, the anti-rotation rod 130 can be a semi-cylindrical rod, which includes a connected semi-circular circumferential surface and a second plane, the second plane serving as a first anti-rotation surface 131. The anti-rotation hole 1510 can be a semi-circular hole adapted to the shape of the semi-cylindrical rod. The semi-circular hole can include a connected semi-circular inner surface and a third plane, the third plane serving as a second anti-rotation surface 1511.
[0060] As another example, the anti-rotation rod 130 can be a cylindrical rod, with an arc-shaped groove extending axially X-shaped on its peripheral wall. The inner wall of the arc-shaped groove can be connected to the outer peripheral surface of the cylindrical rod, and the inner wall of the arc-shaped groove can serve as the first anti-rotation surface 131. The anti-rotation hole 1510 can be a circular hole adapted to the shape of the cylindrical rod, with an arc-shaped protrusion protruding on its wall. The arc-shaped protrusion and the arc-shaped groove are adapted to each other in shape, and the inner surface of the circular hole can be connected to the arc-shaped convex surface of the arc-shaped protrusion. Then, the arc-shaped convex surface of the arc-shaped protrusion can serve as the second anti-rotation surface 1511.
[0061] In some embodiments, the anti-rotation member 150 may be connected to one end of the second circular tube 170 located inside the first circular tube 110, and the anti-rotation member 150 may include a connected end portion 151 and an annular circumferential portion 153.
[0062] The annular portion 153 may surround the outer peripheral surface connected to the end portion 151, and the annular portion 153 may extend along the axial direction X.
[0063] One end of the second round tube 170 is inserted into the inner ring of the annular circumferential portion 153, or the annular circumferential portion 153 is inserted into the interior of the second round tube 170, so that the annular circumferential portion 153 can form a positioning groove for the second round tube 170 to be inserted, which helps to pre-position the annular circumferential portion 153 and the second round tube 170, so as to provide a definite installation position for the second round tube 170.
[0064] The second round tube 170 is fixedly connected to the annular circumference 153. The second round tube 170 and the annular circumference 153 can be fixedly connected by interference fit, or by welding, bonding, or connection by fasteners.
[0065] The end 151 may be provided with an anti-rotation hole 1510, and the anti-rotation rod 130 may extend through the anti-rotation hole 1510 into the second round tube 170.
[0066] In some embodiments, the annular circumferential portion 153 may be provided with a first snap-fit portion, and the outer peripheral wall of the second circular tube 170 may be provided with a second snap-fit portion.
[0067] The first snap-fit part snaps into the second snap-fit part, thereby enabling a detachable fixed connection between the annular circumferential part 153 and the second round tube 170, which facilitates subsequent disassembly and maintenance.
[0068] One of the first and second snap-fit portions is a snap-fit protrusion 1530, and the other is a snap-fit groove 171 that is adapted to the snap-fit protrusion 1530.
[0069] In some embodiments, there may be multiple first snap-fit portions and multiple second snap-fit portions, with each first snap-fit portion corresponding to one second snap-fit portion, which helps to make the snap-fit between the annular circumference 153 and the second round tube 170 more stable.
[0070] Please see Figure 2 , Figure 3 and Figure 5 In some embodiments, the outer peripheral wall of the second circular tube 170 and the inner peripheral wall of the first circular tube 110 can be spaced apart, thereby reducing direct contact friction between the first circular tube 110 and the second circular tube 170, which helps to reduce wear on the first circular tube 110 and the second circular tube 170, and can extend the service life of the first circular tube 110 and the second circular tube 170.
[0071] The telescopic assembly 100 may also include an annular limiting member 190 (e.g., Figure 5 As shown), the annular limiting member 190 can be connected to the end of the first circular tube 110 near the first port 111.
[0072] As an example, the annular stop 190 may be partially located within the first port 111, and the inner diameter of the annular stop 190 may be smaller than the inner diameter of the first circular tube 110.
[0073] The annular limiting member 190 and the first circular tube 110 can be connected by snap-fit, adhesive, welding, fasteners or other methods.
[0074] The outer peripheral wall of the second circular tube 170 can slidably contact the inner peripheral wall of the annular limiting member 190, and the outer peripheral wall of the annular circumference 153 can slidably contact the inner peripheral wall of the first circular tube 110, thereby supporting the first circular tube 110 at two positions along the axial direction X, which helps the first circular tube 110 move more smoothly.
[0075] The annular limiting member 190 can be partially located on the moving path of the annular circumference 153 to block the annular circumference 153, prevent the second round tube 170 from detaching from the first round tube 110 from the first port 111, and ensure the stability of the movement of the second round tube 170.
[0076] Please see Figure 2 and Figure 6 In some embodiments, the end of the first circular tube 110 opposite to the first port 111 along the axial direction X may be provided with a second port 113, that is, the first port 111 and the second port 113 are respectively provided at both ends of the first circular tube 110 along the axial direction X.
[0077] The telescopic assembly 100 may also include a positioning element 210, which can be connected to the second port 113. The end of the anti-rotation rod 130 facing the second port 113 is fixedly connected to the positioning element 210. That is, the anti-rotation rod 130 is connected to the first round tube 110 through the positioning element 210, so that the anti-rotation rod 130 and the first round tube 110 form a whole.
[0078] The first round tube 110 and the positioning member 210 can be connected by welding, snap-fitting, bonding, fastening, or other methods.
[0079] The positioning component 210 and the anti-rotation rod 130 can also be connected by welding, snap-fitting, bonding, fasteners or other methods.
[0080] In some embodiments, the positioning member 210 may have an anti-rotation groove 211 recessed on the side facing the first port 111, and one end of the anti-rotation rod 130 is inserted into the anti-rotation groove 211, so that the anti-rotation groove 211 can provide a definite installation position for the anti-rotation rod 130.
[0081] The anti-rotation groove 211 and the anti-rotation rod 130 can be fixed by interference fit or by other fixing methods.
[0082] A second anti-rotation structure may be provided between the anti-rotation groove 211 and the anti-rotation rod 130. The second anti-rotation structure is used to limit the rotation of the anti-rotation rod 130 around the axis, thereby preventing the anti-rotation rod 130 from rotating relative to the first circular tube 110.
[0083] The anti-rotation groove 211 has a third anti-rotation surface 2110 on its groove wall. The third anti-rotation surface 2110 contacts the first anti-rotation surface 131. The first anti-rotation surface 131 and the third anti-rotation surface 2110 cooperate to form a second anti-rotation structure. The specific shape of the third anti-rotation surface 2110 can refer to the shape of the second anti-rotation surface 1511 in the above embodiment, and will not be described again.
[0084] In some embodiments, the telescopic assembly 100 may further include a locking member 230, and the positioning member 210 may be provided with a fixing hole 213 through along the axial direction X.
[0085] The fixing hole 213 can be connected to the anti-rotation groove 211. The locking member 230 passes through the fixing hole 213 and is threaded to the anti-rotation rod 130. It is used to lock the anti-rotation rod 130 to the positioning member 210, thereby fixing the anti-rotation rod 130 to the positioning member 210.
[0086] As an example, the locking element can be a screw, and the end wall of the anti-rotation rod 130 can be provided with a locking hole opposite to the fixing hole 213. The fixing hole 213 can be a through hole, and the locking hole can be a threaded hole. The screw can pass through the fixing hole 213 and be threaded into the threaded hole.
[0087] It should be noted that the fixing hole 213 can also be a threaded hole, in which case the locking member 230 can be threadedly connected to both the fixing hole 213 and the locking hole.
[0088] Please see Figure 2 In some embodiments, the telescopic assembly 100 may also include a power component 250.
[0089] The power component 250 can be disposed inside the second circular tube 170 and connected to the anti-rotation rod 130. The drive end of the power component 250 is connected to the second circular tube 170. The power component 250 can be used to drive the second circular tube 170 to move relative to the first circular tube 110 and can lock the relative position of the second circular tube 170 and the first circular tube 110, thereby flexibly controlling the position of the second circular tube 170 relative to the first circular tube 110.
[0090] As an example, the power component 250 can be a gas spring located inside the second circular tube 170. The cylinder of the gas spring is fixedly connected to the anti-rotation rod 130, and the piston rod of the gas spring is fixedly connected to the second circular tube 170. Thus, by driving the piston rod to extend or retract from the cylinder, the position of the second circular tube 170 relative to the first circular tube 110 can be adjusted. In practical applications, the cylinder can also be fixedly connected to a support platform, and driving the piston rod to extend or retract from the cylinder can similarly achieve the position adjustment of the second circular tube 170 relative to the first circular tube 110.
[0091] As another example, the power component 250 can also be an electric lead screw, which includes a motor, a lead screw, and a nut. The motor is fixedly connected to the anti-rotation rod 130, and the motor's output shaft is driven by the lead screw to rotate it. The nut is threadedly connected to the lead screw and fixedly connected to the second circular tube 170. When the motor drives the lead screw to rotate, the nut can move along the lead screw's axial direction, thereby moving the second circular tube 170 relative to the first circular tube 110 to achieve position adjustment of the second circular tube 170 relative to the first circular tube 110. In practical applications, the motor can also be fixedly connected to a support platform, with the lead screw extending into the second circular tube 170. When the motor drives the lead screw to rotate, the nut can move along the lead screw's axial direction, similarly moving the second circular tube 170 relative to the first circular tube 110.
[0092] In the telescopic assembly 100 and height support device 10 provided in this application embodiment, by setting both the first circular tube 110 and the second circular tube 170 as circular tubes, different user requirements for the appearance of the telescopic assembly 100 are met; by extending the anti-rotation rod 130 along the axial direction X in the first circular tube 110 and fixing it to the first circular tube 110, setting the second circular tube 170 to be fixedly connected to the anti-rotation member 150 and movably inserted into the first circular tube 110, and the second circular tube 170 and the anti-rotation member 150 movably sleeved on the anti-rotation rod 130, the second circular tube 170 and the anti-rotation member 150 can move synchronously along the axial direction X relative to the first circular tube 110 and the anti-rotation rod 130. By providing a first anti-rotation structure between the anti-rotation member 150 and the anti-rotation rod 130, the first anti-rotation structure can restrict the rotation of the anti-rotation member 150 around the axis of the anti-rotation rod 130, thereby restricting the rotation of the anti-rotation member 150 relative to the anti-rotation rod 130, and thus restricting the rotation of the second round tube 170 relative to the first round tube 110. Compared with the telescopic components in the related art that use multiple ball bearing slide rails to achieve anti-rotation limiting, the telescopic component 100 of this application embodiment can restrict the rotation of the second round tube 170 relative to the first round tube 110 through the first anti-rotation structure between the anti-rotation rod 130 and the anti-rotation member 150, resulting in lower manufacturing costs.
[0093] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.
Claims
1. A telescopic component, characterized in that, include: The first circular tube has a first port at one end along the axial direction; An anti-rotation rod extends along the axial direction inside the first circular tube and is fixedly connected to the first circular tube. An anti-rotation member is movably sleeved on the anti-rotation rod along the axial direction. A first anti-rotation structure is provided between the anti-rotation member and the anti-rotation rod. The first anti-rotation structure is used to restrict the rotation of the anti-rotation member about the axis of the anti-rotation rod. as well as The second round tube is movably inserted into the first round tube along the axial direction and is movably sleeved on the anti-rotation rod; the second round tube and the anti-rotation member are fixedly connected; the second round tube can partially extend out of the first round tube through the first port.
2. The telescopic assembly according to claim 1, characterized in that, The anti-rotation member is provided with an anti-rotation hole, and the anti-rotation rod passes through the anti-rotation hole; The anti-rotation rod includes a first anti-rotation surface extending along the axial direction, and the hole wall of the anti-rotation hole includes a second anti-rotation surface, the second anti-rotation surface being slidably in contact with the first anti-rotation surface; The first anti-rotation surface and the second anti-rotation surface cooperate to form the first anti-rotation structure.
3. The telescopic component according to claim 2, characterized in that, The anti-rotation component is connected to the end of the second round tube located inside the first round tube; The anti-rotation member includes a connected end and an annular circumference, the annular circumference surrounding the outer circumferential surface connected to the end; One end of the second circular tube is inserted into the inner ring of the annular circumference, or the annular circumference is inserted into the interior of the second circular tube.
4. The telescopic component according to claim 3, characterized in that, The annular circumference is provided with a first snap-fit portion, and the outer circumferential wall of the second circular tube is provided with a second snap-fit portion, wherein the first snap-fit portion snaps into the second snap-fit portion. One of the first snap-fit portion and the second snap-fit portion is a snap-fit protrusion, and the other is a snap-fit groove that is adapted to the snap-fit protrusion.
5. The telescopic component according to claim 3, characterized in that, The outer peripheral wall of the second circular tube and the inner peripheral wall of the first circular tube are spaced apart; The telescopic assembly also includes an annular limiting member, which is connected to the end of the first circular tube near the first port. The outer peripheral wall of the second circular tube can slidably contact the inner peripheral wall of the annular limiting member, and the outer peripheral wall of the annular portion can slidably contact the inner peripheral wall of the first circular tube. The annular limiting member is located on the movement path of the annular circumference and is used to block the annular circumference.
6. The telescopic component according to claim 2, characterized in that, The first circular tube has a second port at the end opposite to the first port along the axial direction; The telescopic assembly further includes a positioning element, which is connected to the second port; The end of the anti-rotation rod facing the second port is fixedly connected to the positioning component.
7. The telescopic assembly according to claim 6, characterized in that, The positioning member has an anti-rotation groove recessed on the side facing the first port, and one end of the anti-rotation rod is inserted into the anti-rotation groove; A second anti-rotation structure is provided between the anti-rotation groove and the anti-rotation rod, the second anti-rotation structure being used to restrict the rotation of the anti-rotation rod around the axis; The anti-rotation groove wall includes a third anti-rotation surface, which contacts the first anti-rotation surface; The first anti-rotation surface and the third anti-rotation surface cooperate to form the second anti-rotation structure.
8. The telescopic component according to claim 7, characterized in that, The positioning member has a fixing hole extending through it along the axial direction, and the fixing hole communicates with the anti-rotation groove; The telescopic assembly also includes a locking member, which passes through the fixing hole and is threaded to the anti-rotation rod, for locking the anti-rotation rod to the positioning member.
9. The telescopic assembly according to any one of claims 1 to 8, characterized in that, The telescopic assembly also includes a power component, which is disposed inside the second circular tube and connected to the anti-rotation rod; The drive end of the power component is connected to the second circular tube; The power component is used to drive the second circular tube to move relative to the first circular tube, and can lock the relative position of the second circular tube and the first circular tube.
10. A height support device, characterized in that, include: At least one telescopic component according to any one of claims 1 to 9; A base, wherein the first circular tube is connected to the base; as well as A support platform is connected to the second circular tube.