Adjusting device and telescopic rod

Abstract

The utility model discloses a kind of adjusting device and telescopic rod, it is related to household goods technical field, the adjusting device is used for telescopic rod, the adjusting device includes: adjusting piece, base and radial bearing The adjusting piece extends along the axial direction;The base is rotatably connected with the adjusting piece;The radial bearing is located between the adjusting piece and the base.According to the adjusting device of the utility model embodiment, by setting radial bearing between adjusting piece and base, the friction of adjusting piece and base can be reduced when rotating, which is beneficial to increase the pressure between base and wall surface, thereby increasing the carrying capacity of telescopic rod after installation under the condition of certain torque.

Description

Technical Field

[0001] This utility model relates to the field of household goods technology, and in particular to an adjustment device and a telescopic rod having the adjustment device. Background Technology

[0002] No-drill telescopic poles are typically supported between two walls for hanging objects. The structure includes an inner pole, an outer pole, and bases at both ends of the inner and outer poles. An adjustment tube is installed between the inner pole and the bases. The function of the adjustment tube is to further adjust the overall length of the telescopic pole (fine-tuning) by adjusting the extension of the adjustment tube relative to the inner pole after the overall length of the inner pole and the pole itself is relatively fixed, thus ensuring the telescopic pole is firmly anchored between the two walls.

[0003] In related technologies, when turning the adjusting tube, a portion of the operating torque is converted into relative displacement between the adjusting tube and the screw head. Given a fixed operating torque, a greater frictional force between the adjusting tube and the base will cause a portion of the work to be converted into frictional work. According to the friction formula... When the friction coefficient μ remains constant, an increase in friction will lead to a decrease in normal force, resulting in a smaller load-bearing capacity under a constant operating torque. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide an adjustment device with a radial bearing, which can reduce the frictional force between the adjusting component and the base during rotation, thereby increasing the pressure between the base and the wall, and thus increasing the load-bearing capacity of the telescopic rod after installation under a constant torque.

[0005] Another objective of this invention is to provide a telescopic rod, including the aforementioned adjustment device.

[0006] An adjusting device according to an embodiment of the present invention is used for a telescopic rod, comprising: an adjusting member, a base, and a radial bearing; the adjusting member extends axially; the base is rotatably connected to the adjusting member; and the radial bearing is disposed between the adjusting member and the base.

[0007] According to the adjustment device of this utility model embodiment, by setting a radial bearing between the adjustment member and the base, the frictional force when the adjustment member and the base rotate can be reduced, which is conducive to increasing the pressure between the base and the wall, thereby increasing the load-bearing capacity of the telescopic rod after installation under a certain torque.

[0008] In addition, the adjusting device according to the above embodiments of the present invention may also have the following additional technical features: In some examples of this utility model, the radial bearing is a radial rolling bearing, and one of the inner ring and the outer ring of the radial rolling bearing is connected to the adjusting member, and the other is connected to the base.

[0009] In some examples of this utility model, the inner ring is sleeved on the outer peripheral surface of the adjusting member and / or abuts against the adjusting member along the axial direction of the adjusting member.

[0010] In some examples of this utility model, the outer ring is disposed on the inner circumferential surface of the base and / or abuts against the base along the axial direction of the adjusting member.

[0011] In some examples of this utility model, the inner ring is integrated with the adjusting member, and the outer ring is integrated with the base.

[0012] In some examples of this invention, the radial bearing is a radial sliding bearing.

[0013] In some examples of this utility model, the outer peripheral surface of the adjusting member is provided with a third groove, and at least a portion of the radial sliding bearing is provided in the third groove.

[0014] In some examples of this utility model, the inner circumferential surface of the base is provided with a fourth groove, and at least a portion of the radial sliding bearing is disposed in the fourth groove.

[0015] In some examples of this utility model, the adjusting member includes a main body and a positioning boss. The main body extends axially, the positioning boss is located at one end of the main body along the axial direction, and the radial bearing is located between the positioning boss and the base.

[0016] In some examples of this utility model, the connection between the main body and the positioning boss is provided with a first support surface extending radially, and the radial bearing abuts axially between the first support surface and the base.

[0017] In some examples of this utility model, the base is provided with a positioning groove that is axially opposite to the first support surface, one side end face of the radial bearing abuts against the first support surface, and the other side end face is provided in the positioning groove.

[0018] In some examples of this utility model, the main body is provided with a second support surface extending radially, and the base abuts against the second support surface axially.

[0019] A telescopic rod according to an embodiment of the present invention includes: a rod body and the aforementioned adjusting device, wherein the adjusting member is connected to the end of the rod body and the adjusting member is configured to adjust the relative position of the base and the rod body along the axial direction of the rod body.

[0020] According to the embodiments of the present invention, by setting a bearing between the adjusting member and the base, the frictional force when the adjusting member and the base rotate can be reduced, which helps to increase the pressure between the base and the wall, thereby increasing the load-bearing capacity of the telescopic rod after installation under a certain torque.

[0021] The beneficial effects of this utility model compared to related technologies are: by setting a radial bearing between the adjusting component and the base, the frictional force when the adjusting component and the base rotate can be reduced, which helps to increase the pressure between the base and the wall, thereby increasing the load-bearing capacity of the telescopic rod after installation under a certain torque. Attached Figure Description

[0022] Figure 1 This is a partial structural schematic diagram of the telescopic rod in some embodiments of this utility model; Figure 2 This is a partial structural assembly drawing of the telescopic rod in some embodiments of this utility model; Figure 3 yes Figure 2 A partial cross-sectional view of the area where the radial rolling bearing is located; Figure 4 This is a partial structural assembly drawing of the telescopic rod in some other embodiments of this utility model; Figure 5 This is a partial structural assembly drawing of the telescopic rod in some embodiments of this utility model; Figure 6 This is a partial structural assembly drawing of the telescopic rod in some embodiments of this utility model; Figure 7 This is a schematic diagram of the telescopic rod in some embodiments of this utility model.

[0023] Figure label: 100. Telescopic rod; 10. Rod body; 11. Inner rod; 12. Outer rod; 20. Adjusting component; 21. Connecting part; 22. Main body; 221. First support surface; 222. Second support surface; 223. Third support surface; 23. Positioning boss; 30. Base; 301. Positioning groove; 302. Recess; 314. Fourth support surface; 32. Baffle; 33. Shim; 40. Radial bearing; 44. Inner ring; 45. Outer ring; 46. Rolling unit. Detailed Implementation

[0024] 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 intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] Combination Figures 1 to 7According to an embodiment of the present invention, an adjustment device for a telescopic rod 100 includes: an adjustment member 20, a base 30, and a radial bearing 40. The adjustment member 20 extends axially; the base 30 is rotatably connected to the adjustment member 20; and the radial bearing 40 is disposed between the adjustment member 20 and the base 30.

[0026] Specifically, the telescopic rod 100 can be supported between two walls. After installation, the rod body 10 of the telescopic rod 100 can be used to hang objects. In use, the telescopic rod 100 can be adjusted to a predetermined length, and then the base 30 is aligned with the wall. To improve the fixing effect, the telescopic rod 100 is also equipped with an adjustment device for adjusting the distance between the rod body 10 and the base 30. The adjustment device can improve the tightness of the fit between the telescopic rod 100 and the wall. Specifically, one end of the adjusting member 20 can be connected to the end of the rod body 10 of the telescopic rod 100, so that the adjusting member 20 can be close to the base 30, thereby allowing the other end of the adjusting member 20 to be connected to the base 30. The base 30 can then contact the wall, improving the stability of the telescopic rod 100 after installation.

[0027] When adjusting the adjustment device, the adjusting component 20 and the base 30 will rotate relative to each other. In order to reduce the friction between the adjusting component 20 and the base 30 during rotation, a radial bearing 40 is provided between the base 30 and the adjusting component 20. The radial bearing 40 can reduce the friction between the adjusting component 20 and the base 30 during relative rotation. As a result, the pressure between the base 30 and the wall can be increased. Thus, under the condition of constant torque (i.e., when the user adjusts the adjustment device with the same force), the load-bearing capacity of the telescopic rod 100 after installation can be increased.

[0028] In some embodiments of this utility model, during assembly, since the adjusting member 20 extends axially, the length of the telescopic rod 100 can be adjusted axially. Specifically, the relative position of the base 30 and the rod 10 can be adjusted axially by rotating the adjusting member 20 radially, for example, driving the rod 10 to extend axially so that the base 30 can contact the wall, or improving the tightness of the contact between the base 30 and the wall, thereby improving the reliability of the telescopic rod 100 after installation and increasing the load-bearing capacity of the telescopic rod 100. Similarly, when it is necessary to disassemble the telescopic rod 100, the adjusting member 20 can be turned in the opposite direction to shorten the length of the telescopic rod 100, thereby achieving drilling-free assembly of the telescopic rod 100.

[0029] For example, the radial bearing 40 can provide radial support between the adjusting member 20 and the base 30 and reduce the friction when the outer side of the adjusting member 20 rotates with the inner side of the base 30. This can reduce the force applied by the user when the load-bearing capacity of the telescopic rod 100 is constant after installation, thus achieving a labor-saving effect, or increase the load-bearing capacity of the telescopic rod 100 after installation when the user applies the same force.

[0030] According to the adjustment device of this utility model embodiment, by setting a radial bearing 40 between the adjustment member 20 and the base 30, the frictional force when the adjustment member 20 and the base 30 rotate can be reduced, which is conducive to increasing the pressure between the base 30 and the wall, thereby increasing the load-bearing capacity of the telescopic rod 100 after installation under a certain torque.

[0031] More specifically, after the bases 30 at both ends of the telescopic rod 100 contact the wall, the telescopic rod 100 needs to be fixed between the two walls by the friction between the bases 30 and the wall. The load-bearing capacity of the telescopic rod 100 is also related to this friction. That is, the load-bearing capacity of the telescopic rod 100 is positively correlated with the friction between the bases 30 and the wall. Let this friction be μ1 and the friction between the bases 30 and the wall be f1. According to the friction formula f=μ×F, when the friction coefficient μ1 remains unchanged, further enhancing the load-bearing capacity of the telescopic rod 100 depends on the normal pressure after the adjusting component 20 is finally tightened.

[0032] In related technologies, when a user tightens the adjusting tube, part of the operating torque is converted into relative displacement between the adjusting tube and the base. As the user rotates the adjusting component in the tightening direction, the normal pressure of the adjusting tube on the base gradually increases with the work done by the operating torque. At the same time, friction is generated at the connection between the adjusting tube and the base due to rotation. Let the coefficient of friction between the adjusting tube and the base be μ2, and the friction force between the adjusting tube and the base be f2. According to the friction force formula, the friction force f2 between the adjusting tube and the base will gradually increase with tightening. When the user's operating torque is constant, the larger f2 is, the more a large part of the work will be converted into work done by the friction force f2, resulting in a decrease in normal pressure and thus insufficient load-bearing capacity. Therefore, when the user needs the telescopic rod to achieve the predetermined load-bearing capacity after installation, it is necessary to increase the operating torque applied to the adjusting component, requiring more effort and causing inconvenience to the user during installation.

[0033] Therefore, in order to maintain the load-bearing capacity of the telescopic rod while keeping the operating torque constant, the adjustment device of this utility model also includes a radial bearing 40. By placing the radial bearing 40 between the adjustment member 20 and the base 30, the radial bearing 40 can be used to reduce the frictional force f2 generated when the adjustment member 20 and the base 30 rotate relative to each other.

[0034] Specifically, let the torque of the adjusting component 20 be T, the effective work done when the adjusting component 20 is displaced be W1, and the harmful work done when the adjusting component 20 is displaced be W2, then T = W1 + W2. The normal force of the adjusting component 20 on the base 30 is F, and the displacement of the adjusting component 20 is P. Therefore, W1 = F × P. The bearing can reduce the frictional force f2 between the adjusting component 20 and the base 30. When T remains constant, decreasing f2 leads to a decrease in W2, an increase in f1, an increase in F, and an increase in W1. Therefore, under the same torque, decreasing f2 can increase the load-bearing capacity of the telescopic rod 100 after assembly.

[0035] Optionally, the radial bearing 40 can be sleeved on the outer surface of the adjusting member 20. In this way, when the adjusting member 20 is rotated to fine-tune the length of the telescopic rod 100, the force applied by the adjusting member 20 to the base 30 can be transferred to the radial bearing 40. The axial end of the adjusting member 20 and the inner surface of the base 30 can be in clearance fit or slight contact, so that no large frictional force is generated between the end of the adjusting member 20 and the axial inner surface of the base 30, thereby reducing the frictional force during rotation. The radial bearing 40 also reduces the frictional force at the radial fit between the adjusting member 20 and the base 30, thereby reducing the frictional force during adjustment of the adjusting device.

[0036] Furthermore, combined Figures 2 to 6 In some embodiments of this utility model, the radial bearing 40 is a radial rolling bearing. One of the inner ring 44 and the outer ring 45 of the radial rolling bearing is connected to the adjusting member 20, and the other is connected to the base 30. Rolling friction can be formed when the adjusting member 20 and the base 30 rotate relative to each other. The radial bearing 40 can reduce the frictional force generated when the adjusting member 20 and the base 30 rotate relative to each other.

[0037] Specifically, at least a portion of the adjusting member 20 can extend axially into the base 30 to improve the fit between the adjusting member 20 and the base 30, thereby bringing the outer periphery of the adjusting member 20 into contact with the inner periphery of the base 30. Wherein, in combination Figure 4 In some embodiments of this utility model, the inner ring 44 of the radial bearing 40 can be sleeved on the outer peripheral surface of the adjusting member 20, and the outer ring 45 can be disposed on the inner peripheral surface of the base 30, so that the radial bearing 40 can be radially supported between the adjusting member 20 and the base 30, thereby reducing the friction caused by rotation between the adjusting member 20 and the base 30.

[0038] Combination Figure 4 In some embodiments of this utility model, the inner ring 44 of the radial bearing 40 may be sleeved on the outer peripheral surface of the adjusting member 20, and the inner ring 44 abuts against the adjusting member 20 along the axial direction. The outer ring 45 of the radial bearing 40 is disposed on the inner peripheral surface of the base 30, and the outer ring 45 abuts against the base 30 along the axial direction. Thus, the radial bearing 40 can be radially disposed between the base 30 and the adjusting member 20, and the radial bearing 40 can also abut against the base 30 and the adjusting member 20 along the axial direction, so that the radial bearing 40 can provide axial support and reduce friction in the radial direction, which is beneficial to improving the structural stability and operational reliability of the adjusting device.

[0039] In some embodiments of this utility model, the inner ring 44 and the adjusting member 20 can be integrated into one unit, and the outer ring 45 and the base 30 can be integrated into one unit, which simplifies the structure and facilitates assembly. Specifically, the integration of the inner ring 44 and the adjusting member 20 and / or the integration of the outer ring 45 and the base 30 into one unit allows the inner ring 44 to be directly connected to the adjusting member 20 without the need for a structure for mounting the radial bearing 40, and the outer ring 45 to be directly connected to the base 30 without the need for a structure for mounting the radial bearing 40. During assembly, the radial bearing 40 can be assembled simply by directly connecting the adjusting member 20 to the base 30.

[0040] More specifically, combined Figure 3 and Figure 4 The radial bearing 40 also includes a rolling unit 46, which is rotatably disposed between the inner ring 44 and the outer ring 45, thereby enabling rolling friction.

[0041] Optionally, the rolling unit 46 includes a plurality of balls or a plurality of rollers. The plurality of balls or balls are arranged at circumferential intervals along the radial rolling bearing, which can improve the support effect of the rolling unit 46 between the inner ring 44 and the outer ring 45.

[0042] Combination Figure 5 In some embodiments of this utility model, the adjusting device further includes a baffle 32, which is detachably disposed on the base 30. The baffle 32 extends radially, with one end detachably connected to the base 30 in the radial direction and the other end abutting against the radial bearing 40 or the inner ring 44 of the radial bearing 40; in the axial direction, the baffle 32 stops the outer ring 45. Thus, the baffle 32 can cover the radial bearing 40, protecting the bearing and improving the structural stability and overall aesthetics of the adjusting device. Specifically, the base 30 can be configured with an opening for installing the adjusting member 20 and the radial bearing 40. After the adjusting member 20 and the radial bearing 40 are installed, the baffle 32 can be installed on the base 30, thereby covering the opening of the base 30, which can prevent dust from entering the bearing and improve the overall structural consistency.

[0043] More specifically, the inner circumferential surface of the base 30 is provided with a notch, and the radial end of the baffle 32 is provided with an arc-shaped protrusion. The protrusion is detachably provided at the notch, which can realize the disassembly and installation of the baffle 32.

[0044] In some embodiments of this utility model, the radial bearing 40 is a radial sliding bearing, which can form sliding friction when the adjusting member 20 and the base 30 rotate relative to each other, thereby reducing the frictional force generated when the adjusting member 20 and the base 30 rotate relative to each other.

[0045] Optionally, the radial sliding bearing may include at least one ball. The outer circumferential surface of the adjusting member has a first groove, and the inner circumferential surface of the base has a second groove opposite to the first groove. At least a portion of the ball is disposed in the first and second grooves. Thus, the side of the ball that mates with the adjusting member 20 can be accommodated in the first groove, and the side that mates with the base 30 can be accommodated in the second groove. This improves the tightness of the fit between the ball and the adjusting member 20 and the base 30, facilitates ball assembly, and enhances structural stability. When the adjusting member 20 and the base 30 rotate relative to each other, the ball can transform the planar contact between the adjusting member 20 and the base 30 into a curved contact. Since friction is the normal force exerted by the contact and compression of objects, and the direction of friction is always along the tangent of the contact surface, when the adjusting member 20 and the base 30 are in curved contact, a component force can be formed, thereby appropriately reducing the normal force and friction. Furthermore, the ball can be made of a material that facilitates friction reduction to further reduce the friction generated when the adjusting member 20 and the base 30 rotate relative to each other.

[0046] In some embodiments of this utility model, the outer peripheral surface of the adjusting member 20 is provided with a third groove, and the inner peripheral surface of the base 30 is provided with a fourth groove opposite to the third groove. At least a portion of the radial sliding bearing is disposed in the third groove and the fourth groove. The side of the radial sliding bearing that mates with the adjusting member 20 can be accommodated in the third groove, and the side of the radial sliding bearing that mates with the base 30 can be accommodated in the fourth groove. This not only improves the tightness of the fit between the radial sliding bearing and the adjusting member 20 and the base 30, but also facilitates the assembly of the radial sliding bearing and improves structural stability. The radial sliding bearing can be made of a material that reduces friction, thereby further reducing the friction generated when the adjusting member 20 and the base 30 rotate relative to each other. For example, the radial sliding bearing can be a support structure with a low coefficient of friction.

[0047] In addition, the radial sliding bearing can be a plate-like structure and be arranged in a ring along the structure. It can be radially wrapped between the adjusting member 20 and the base 30, which is convenient for assembly. The radial sliding bearing occupies less space and has a more regular shape, which helps to improve the structural compactness.

[0048] Alternatively, the outer peripheral surface of the adjusting member 20 may have a third groove, with one side of the radial sliding bearing embedded in the third groove and the other side slidably connected to the inner peripheral surface of the base 30. Alternatively, the inner peripheral surface of the base 30 may have a fourth groove, with one side of the radial sliding bearing embedded in the third groove and the other side slidably connected to the outer peripheral surface of the adjusting member 20. That is, the radial sliding bearing may also be installed on either the adjusting member 20 or the base 30. Alternatively, one side of the radial sliding bearing may be embedded in the third groove, and the other side in the fourth groove.

[0049] Combination Figure 2 , Figures 4 to 6In some embodiments of this utility model, the adjusting member 20 includes a main body 22 and a positioning boss 23. The main body 22 extends axially, and the positioning boss 23 is located at one end of the main body 22 along the axial direction. The radial bearing 40 is located between the positioning boss 23 and the base 30. That is to say, the radial bearing 40 can be installed on or sleeved on the adjusting member 20 through the positioning boss 23, which can realize the positioning and assembly of the radial bearing 40. The structure is simple and easy to construct.

[0050] During assembly, the radial bearing 40 can be installed on the positioning boss 23 first, and then the adjusting part 20 can be installed on the base 30. After assembly, the inner ring 44 of the radial bearing 40 can contact the outer side of the positioning boss 23, and the outer ring 45 of the radial bearing 40 can contact the inner side of the base 30.

[0051] Furthermore, combined Figure 2 In some embodiments of this utility model, in the axial projection, the radial dimension of the main body 22 is larger than the radial dimension of the positioning boss 23, so that the connection between the main body 22 and the positioning boss 23 forms a first support surface 221 extending radially. The radial bearing 40 can abut against the first support surface 221 and the base 30 axially. Thus, by setting the positioning boss 23 with an outer diameter smaller than the outer diameter of the main body 22, the radial positioning and axial support of the radial bearing 40 can be achieved, which helps to improve the stability after assembly.

[0052] Furthermore, combining Figure 5 and Figure 6 In some embodiments of this utility model, the base 30 is provided with a positioning groove 301 that is axially opposite to the first support surface 221. One end face of the radial bearing 40 abuts against the first support surface 221 along the axial direction, and the other end face is provided in the positioning groove 301. Thus, the radial bearing 40 can be assembled between the adjusting member 20 and the base 30. The radial bearing 40 is respectively engaged with the outer periphery of the positioning boss 23 and the inner periphery of the positioning groove 301 along the radial direction, and is axially supported in the first support surface 221 and the positioning groove 301 of the adjusting member 20. This reduces the friction between the outer periphery of the adjusting member 20 and the inner periphery of the base 30 when the radial bearing 40 rotates, and also improves the structural stability after assembly.

[0053] Combination Figure 2 and Figure 4In some other embodiments of this utility model, the radial bearing 40 is sleeved on the positioning boss 23, the first support surface 221 supports one end of the radial bearing 40 along the axial direction, and the base 30 supports the other end of the radial bearing 40 along the axial direction. In this way, the radial bearing 40 can be axially disposed between the adjusting member 20 and the base 30, and the radial bearing 40 can be separated from the outside, which is beneficial to protect the bearing and improve the structural stability of the radial bearing 40 after installation. The main body 22 is provided with a second support surface 222 extending radially, and the base 30 abuts against the second support surface 222 along the axial direction, which can improve the stability of the assembly of the adjusting member 20 and the base 30.

[0054] Combination Figure 2 The main body 22 is provided with a third support surface 223 extending radially. The third support surface 223 is radially connected to the first support surface 221. The third support surface 223 and the first support surface 221 form a stepped structure. The radial bearing 40 abuts against the first support surface 221 axially and is clearance-fitted with the third support surface 223. Thus, the first support surface 221 can realize the axial connection between the adjusting member 20 and the radial axis 40. However, the clearance fit between the third support surface 223 and the radial bearing 40 can reduce the axial contact area between the bearing 40 and the adjusting member 20, thereby reducing the axial friction between the adjusting member 20 and the radial bearing 40 when rotating.

[0055] In some embodiments of this utility model, combined with Figure 4 The base 30 has a recess 302 and a fourth support surface 314 extending radially on its inner bottom surface along the axial direction. The fourth support surface 314 surrounds the outer periphery of the recess 302. The radial bearing 40 can be supported only by the fourth support surface 314 along the axial direction. There is a gap between the radial bearing 40 and the inner bottom surface of the recess 302, which can reduce the contact between the radial bearing 40 and the inner bottom surface of the base 30.

[0056] Combination Figure 2 In some embodiments of this utility model, the adjusting member 20 includes a connecting part 21 and a main body 22. The connecting part 21 connects to the rod 10, and the main body 22 connects to the base 30. The main body 22 is threadedly engaged with the connecting part 21. The main body 22 is configured to convert the circumferential rotational motion of the rod 10 into an axial telescopic motion of the rod 10, so that the axial length of the telescopic rod 100 can be finely adjusted by rotating the main body 22. Specifically, when the user needs to lock the telescopic rod 100 to the wall, the main body 22 can be rotated so that the main body 22 moves axially away from the connecting part 21 or the rod 10, supporting the base 30 axially, improving the tightness of the contact between the base 30 and the wall, and increasing the pressure of the base 30 on the wall. When the user needs to disassemble the telescopic rod 100, the main body 22 can be rotated in the opposite direction so that the main body 22 moves axially towards the connecting part 21 or the rod 10, gradually reducing the pressure of the base 30 on the wall.

[0057] For example, when installing the telescopic rod 100, the main body 22 can be rotated clockwise, and when disassembling the telescopic rod 100, the main body 22 can be rotated counterclockwise; or when installing the telescopic rod 100, the main body 22 can be rotated counterclockwise, and when disassembling the telescopic rod 100, the main body 22 can be rotated clockwise.

[0058] Specifically, in combination Figure 2 The first end of the main body 22 is sleeved outside the rod 10, and the second end extends into the base 30. The main body 22 is provided with internal threads. A part of the connecting part 21 is provided on the rod 10 and fixedly connected to the rod 10, and the other part is provided inside the main body 22. The connecting part 21 is provided with external threads. The internal threads and external threads achieve threaded engagement. The radial bearing 40 is provided between the second end of the main body 22 and the base 30.

[0059] Preferably, the helix angle of the thread is 15 degrees, which can prevent the helix from retracting when the main body 22 rotates.

[0060] Optionally, the telescopic rod 100 can be a hollow rod, with a portion of the connecting part 21 extending axially into the rod 10 and fixedly connected to it. Alternatively, the connecting part 21 can be directly constructed at the end of the rod 10, and the outer periphery of the connecting part 21 is provided with external threads.

[0061] Optionally, the portion of the main body 22 that protrudes from the telescopic rod 100 is provided with stripes to increase friction, making it less likely for the user to slip when rotating the main body 22, and facilitating the application of rotational force to the main body 22.

[0062] Combination Figure 2 In some embodiments of this utility model, the axial projection of the base 30 is larger than that of the rod 10. That is, the radial dimension of the base 30 can be larger than that of the rod 10. A larger base 30 increases the contact area between the base 30 and the wall, thereby increasing the friction when the base 30 contacts the wall. The base 30 may include an abutment seat and a connecting seat. The connecting seat extends axially and wraps around the outer periphery of the main body 22. The outer periphery of the main body 22 may be provided with a second support surface. After assembly, the connecting seat of the base 30 can abut against the second support surface of the main body 22 axially to improve the tightness and stability of the fit.

[0063] Combination Figure 1 and Figure 2 In some embodiments of this utility model, the base 30 further includes a pad 33, which is disposed on the end face of the base 30 away from the rod 10. The pad 33 can contact the wall surface, thereby improving the stability and reliability of the base 30 when it abuts against the wall surface.

[0064] Alternatively, the pad 33 can be made of a material that increases friction, such as an anti-slip silicone pad. The side of the pad 33 facing the wall may have an anti-slip pattern to increase the friction between the pad 33 and the wall.

[0065] According to the telescopic rod 100 of this utility model embodiment, under a certain operating torque of the user, the frictional torque that is not conducive to enhancing the friction between the pad 33 on the base 30 and the wall can be reduced; the reduced frictional work is converted into beneficial work that is conducive to enhancing the friction between the pad 33 on the base 30 and the wall. By increasing the beneficial work, the frictional force obtained under the same operating torque is much greater than that without the radial bearing 40, thereby enabling the telescopic rod 100 to obtain a greater load-bearing capacity. Therefore, by setting the radial bearing 40 between the adjusting member 20 and the base 30, most of the harmful work is converted into beneficial work, thereby increasing the load-bearing capacity of the telescopic rod 100.

[0066] The telescopic rod 100 according to an embodiment of the present utility model includes: a rod body 10 and the aforementioned adjustment device, an adjustment member 20 connected to the end of the rod body 10, and the adjustment member 20 is configured to adjust the relative position of the base 30 and the rod body 10 along the axial direction of the rod body 10.

[0067] According to the telescopic rod 100 of this utility model embodiment, by setting a radial bearing 40 between the adjusting member 20 and the base 30, the frictional force when the adjusting member 20 and the base 30 rotate can be reduced, which is conducive to increasing the pressure between the base 30 and the wall, thereby increasing the load-bearing capacity of the telescopic rod 100 after installation under a certain torque.

[0068] Combination Figure 7 In some embodiments of this utility model, bases 30 are disposed on opposite sides of the rod 10 along its axial direction. The rod 10 includes an inner rod 11 and an outer rod 12, which are telescopically connected. One end of the outer rod 12 is connected to one base 30, and the other end is connected to one end of the inner rod 11. The other end of the inner rod 11 is connected to an adjusting member 20, which is connected to another base 30. The two bases 30 may have the same appearance to improve the overall structural consistency of the telescopic rod 100. The internal structures of the two bases may be different. The outer rod 12 can be directly connected to the base 30. When the inner rod 11 is connected to the base, the interior of the base on that side can be configured to cooperate with the adjusting member 20 and the radial bearing 40.

[0069] Alternatively, the adjusting member 20 may be connected to the outer rod 12.

[0070] The adjustment device of some specific embodiments of the present invention is described below with reference to the accompanying drawings.

[0071] When radial bearing 40 is a radial rolling bearing: Example 1: Combination Figure 2 The radial bearing 40 is axially sleeved on the outside of the positioning boss 23. The main body 22 of the adjusting member 20 extends axially into the base 30. One axial end of the radial bearing 40 abuts against the first support surface 221 and is clearance-fitted with the third support surface, while the other end abuts against the fourth support surface 314 and is clearance-fitted with the inner wall or bottom wall of the recess 302. The radial bearing 40 can be axially positioned between the base 30 and the adjusting member 20 to provide radial support force between them. Alternatively, the inner ring 44 of the radial bearing 40 abuts against the first support surface 221, and the outer ring 45 abuts against the fourth support surface 314. The base 30 abuts axially against the second support surface 222 of the adjusting member 20 to improve the connection effect between the two. Further, the radial bearing 40 is a radial rolling bearing, including an inner ring 44, an outer ring 45, and a plurality of balls disposed between the inner ring 44 and the outer ring 45. One possibility is that the inner ring 44 and the outer ring 45 have grooves on opposite sides, and the balls are located in the grooves of the inner ring 44 and the outer ring 45.

[0072] Example 2: Combination Figure 4 The radial bearing 40 is axially sleeved on the outside of the positioning boss 23. The main body 22 of the adjusting member 20 extends axially into the base 30. One axial end of the radial bearing 40 abuts against the first support surface 221 and is clearance-fitted with the third support surface, while the other end abuts against the fourth support surface 314 and is clearance-fitted with the inner wall or bottom wall of the recess 302. The radial bearing 40 can be axially positioned between the base 30 and the adjusting member 20 to provide radial support force between them. Alternatively, the inner ring 44 of the radial bearing 40 abuts against the first support surface 221, and the outer ring 45 abuts against the fourth support surface 314. The base 30 abuts axially against the second support surface 222 of the adjusting member 20 to improve the connection effect between the two. Further, the radial bearing 40 is a radial rolling bearing, including an inner ring 44, an outer ring 45, and a plurality of rollers disposed between the inner ring 44 and the outer ring 45. The inner ring 44 has a U-shaped groove on its inner wall, and the outer ring 45 has a contact surface on its inner wall. A portion of one side of the roller extends into the U-shaped groove, and the other side abuts against the outer ring 45.

[0073] Example 3: Combination Figure 5The radial bearing 40 is axially sleeved on the outside of the positioning boss 23. The main body 22 of the adjusting member 20 extends axially into the base 30. One end of the radial bearing 40 abuts against the first support surface 221, and the other end is located in the positioning groove 301 of the base 30. Thus, the radial bearing 40 is sleeved on the outside of the adjusting member 20, and the base 30 is sleeved on the outside of the radial bearing 40. Further, the radial bearing 40 is a radial rolling bearing, including an inner ring 44, an outer ring 45, and a plurality of balls disposed between the inner ring 44 and the outer ring 45. The inner ring 44 and the outer ring 45 may have grooves on opposite sides, and the balls may be disposed within the grooves of the inner ring 44 and the outer ring 45.

[0074] Example 4: Combination Figure 6 The radial bearing 40 is axially sleeved on the outside of the positioning boss 23. The main body 22 of the adjusting member 20 extends axially into the base 30. One end of the radial bearing 40 abuts against the first support surface 221, and the other end is located in the positioning groove 301 of the base 30. Thus, the radial bearing 40 is sleeved on the outside of the adjusting member 20, and the base 30 is sleeved on the outside of the radial bearing 40. The baffle 32 is connected to the base 30 to close the end of the radial bearing 40 facing the adjusting member 20 or the outside. Further, the radial bearing 40 is a radial rolling bearing, including an inner ring 44, an outer ring 45, and a plurality of rollers disposed between the inner ring 44 and the outer ring 45. The inner ring 44 has a U-shaped groove, the inner wall of the outer ring 45 forms an abutment surface, a portion of one side of the roller extends into the U-shaped groove, and the other side abuts against the outer ring 45. The inner ring 44 includes an axially extending sidewall and a first bottom wall and a second bottom wall connected to the axial ends of the sidewall. The first bottom wall, the second bottom wall, and the sidewall form a U-shaped groove. The first bottom wall abuts against the first support surface 221 axially and against the baffle 32 radially. The second bottom wall abuts against the positioning groove 301 of the base 30 axially. The outer ring 45 is a tubular annular shape. In the axial direction, the opposite ends of the outer ring 45 abut against the baffle 32 and the positioning groove 301, respectively.

[0075] When radial bearing 40 is a radial sliding bearing: Example 1: The outer peripheral surface of the adjusting member 20 is provided with a first groove, and the inner peripheral surface of the base 30 is provided with a second groove opposite to the first groove. At least a portion of the sphere is disposed between the first groove and the second groove. The adjusting member 20 includes a main body 22, the main body 22 is provided with a second support surface 222 extending radially, and one end of the base 30 abuts against the second support surface 222 along the axial direction.

[0076] Example 2: The outer peripheral surface of the adjusting member 20 is provided with a third groove, and the inner peripheral surface of the base 30 is provided with a fourth groove opposite to the third groove. At least a portion of the gasket 33 is disposed between the third groove and the fourth groove. The adjusting member 20 includes a main body 22, the main body 22 is provided with a second support surface 222 extending radially, and one end of the base 30 abuts against the second support surface 222 along the axial direction.

[0077] In the description of this utility model, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0079] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0080] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "embodiment," "specific embodiment," or "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or embodiment, which are included in at least one embodiment or embodiment of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or embodiment. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or embodiments. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or embodiments described in this specification, as well as the features of different embodiments or embodiments.

[0082] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An adjusting device for a telescopic rod (100), characterized in that, include: Adjusting member (20), the adjusting member (20) extending axially; A base (30) rotatably connected to the adjusting member (20); A radial bearing (40) is disposed between the adjusting member (20) and the base (30).

2. The adjusting device according to claim 1, characterized in that, The radial bearing (40) is a radial rolling bearing, and one of the inner ring (44) and the outer ring (45) of the radial rolling bearing is connected to the adjusting member (20), and the other is connected to the base (30).

3. The adjusting device according to claim 2, characterized in that, The inner ring (44) is sleeved on the outer peripheral surface of the adjusting member (20) and / or abuts against the adjusting member (20) along the axial direction of the adjusting member (20); And / or, the outer ring (45) is disposed on the inner circumferential surface of the base (30) and / or abuts against the base (30) along the axial direction of the adjusting member (20).

4. The adjusting device according to claim 2, characterized in that, The inner ring (44) is integrated with the adjusting member (20), and the outer ring (45) is integrated with the base (30).

5. The adjusting device according to claim 1, characterized in that, The radial bearing (40) is a radial sliding bearing.

6. The adjusting device according to claim 5, characterized in that, The outer peripheral surface of the adjusting member (20) is provided with a third groove, and at least a portion of the radial sliding bearing is provided in the third groove; and / or, the inner peripheral surface of the base (30) is provided with a fourth groove, and at least a portion of the radial sliding bearing is provided in the fourth groove.

7. The adjusting device according to any one of claims 1-6, characterized in that, The adjusting member (20) includes a main body (22) and a positioning boss (23). The main body (22) extends axially, and the positioning boss (23) is located at one end of the main body (22) in the axial direction. The radial bearing (40) is located between the positioning boss (23) and the base (30).

8. The adjusting device according to claim 7, characterized in that, The connection between the main body (22) and the positioning boss (23) is provided with a first support surface (221) extending radially, and the radial bearing (40) abuts against the first support surface (221) and the base (30) axially.

9. The adjusting device according to claim 8, characterized in that, The base (30) is provided with a positioning groove (301) axially opposite to the first support surface (221). One end face of the radial bearing (40) abuts against the first support surface (221) axially, and the other end face is located in the positioning groove (301); and / or The main body (22) is provided with a second support surface (222) extending radially, and the base (30) abuts against the second support surface (222) axially.

10. A telescopic rod (100), characterized in that, include: Rod (10); The adjusting device according to any one of claims 1-9, wherein the adjusting member (20) is connected to the end of the rod (10), and the adjusting member (20) is configured to adjust the relative position of the base (30) and the rod (10) along the axial direction of the rod (10).

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