Shock absorbing sound deadening paint telescopic pole based on dynamic gap compensation

Abstract

The utility model relates to a damping and sound attenuation paint telescopic rod based on dynamic gap compensation, it includes sleeve, inner tube, pole base and gap compensation mechanism, gap compensation mechanism includes balance seat, compensator, steel ball and return spring, and the rear end of balance seat is fixed with inner tube, and the inside of balance seat has balance cavity, and compensator, steel ball and return spring all are located in balance cavity, and the outer wall of compensator is successively ringed with the radial extension of branch, and steel ball, return spring and branch practical one -to -one correspondence, and spring cavity is seted up in the branch, and return spring is located in spring cavity, and its one end is opposite with steel ball, and the circumferential wall of balance seat is seted up with the limiting hole corresponding with steel ball, and steel ball is embedded in the limiting hole, and is opposite with the inner wall of sleeve. The inner tube of this technical scheme paint telescopic rod is smooth and smooth, and is good in quietness, and then significantly improves the working concentration of operating personnel, and the brushing flatness and operation comfort.

Description

Technical Field

[0001] This utility model relates to the field of paint tool technology, and more specifically to a shock-absorbing and noise-reducing paint telescopic rod based on dynamic gap compensation. Background Technology

[0002] A paint extension rod is an adjustable painting tool consisting of a nested outer sleeve and an inner tube. It extends and retracts freely via a sliding locking mechanism, making it suitable for wall work at different heights. Most paint extension rods employ a nested structure design of the sleeve and inner tube. For example, Chinese Patent No. CN210421826U discloses a paint roller lock extension rod, which includes a support rod and a painting device. The lower end of the painting device is fixedly fitted with a sleeve, and a connecting post is fixedly fitted on the support rod. The sleeve is fitted onto the connecting post. The support rod includes several sleeves with decreasing diameters, and a latch is provided between two sleeves. A positioning groove along the length of the sleeve is fixedly fitted on one side of the sleeve, and the positioning grooves slide in cooperation. Another example is Chinese Patent No. CN212562330U, which discloses a paint rod specifically including a rod body with an inner sleeve and an outer sleeve. The inner sleeve and outer sleeve are nested together, and a locking mechanism is fixedly installed at the top of the outer sleeve to prevent the inner sleeve and outer sleeve from retracting when they extend to a set length.

[0003] In order to ensure the sliding telescopic function, conventional paint telescopic rods with a nested structure of sleeve and inner tube generally maintain a certain fit gap between the sleeve and the inner tube. In actual use, this gap will cause the inner tube to wobble and conduction vibration during movement. This not only causes repeated collisions with the inner wall of the sleeve, generating knocking noise, causing auditory discomfort to the operator, leading to irritability and affecting work concentration, but also disrupts the alignment of the inner tube and sleeve, resulting in increased local contact pressure between the rod and the inner wall of the sleeve, forming sliding resistance. At the same time, it affects the contact stability between the paint roller and other paint application tools connected at the end and the wall surface, seriously affecting the smoothness of the paint application and the comfort of operation. Utility Model Content

[0004] In response to the above issues, and to overcome the problems of existing conventional paint telescopic rods with nested structures where the inner tube repeatedly collides with the inner wall of the sleeve during extension and retraction, generating knocking noise and causing the inner tube to wobble and conduction vibration, which not only creates sliding resistance but also affects the contact stability between the paint roller and other painting tools connected to the end and the wall surface, the purpose of this utility model is to provide a paint telescopic rod with smooth and stable inner tube sliding, good quietness, and thus significantly improve the operator's work concentration, painting smoothness, and operating comfort.

[0005] To achieve the above objectives, the technical solution of this utility model is:

[0006] The vibration-damping and noise-reducing painted telescopic rod based on dynamic gap compensation includes a sleeve, an inner tube, and a rod seat. The rod seat is fitted onto the upper end of the sleeve, and the lower end of the inner tube is inserted into the sleeve and slides in cooperation with it. It also includes a gap compensation mechanism, which includes a balance seat, a compensator, a steel ball, and a return spring. The balance seat is fixed to the lower end of the inner tube. The balance seat has a balance cavity inside, and the compensator, steel ball, and return spring are all located in the balance cavity. The outer wall of the compensator has radially extending support arms arranged in sequence. The steel ball, return spring, and support arms correspond one-to-one with each other. A spring cavity is opened in the support arm, and the return spring is located in the spring cavity, with one end of it abutting against the steel ball. The peripheral side wall of the balance seat has a limiting hole corresponding to the steel ball, and the steel ball is embedded in the limiting hole and abuts against the inner wall of the sleeve.

[0007] Preferably, the number of steel balls, return springs and corresponding support arms is four sets, and the central axes of adjacent support arms are perpendicular to each other.

[0008] Preferably, the balance seat includes a seat body and a cover body. The bottom of the seat body has a balance cavity. The cover body is placed on the seat body to close the balance cavity. The bottom of the balance cavity has a central docking groove. A support platform is formed in the central docking groove. An upper connecting pipe and a lower connecting pipe are formed at the top and bottom of the compensator, respectively. The lower connecting pipe is embedded in the central docking groove and abuts against the support platform. A first connecting hole is formed on the support platform. A second connecting hole is formed on the cover body. The second connecting hole, the upper connecting pipe, the lower connecting pipe and the first connecting hole are interconnected.

[0009] Preferably, a limiting platform corresponding to the support arm is formed on the bottom wall of the balancing cavity, and a limiting groove is formed on the limiting platform. The shape of the limiting groove matches the support arm, and the support arm is embedded in the limiting groove.

[0010] Preferably, the bottom of the base has a insertion platform, which is inserted into the inner tube. The insertion platform has a third connecting hole, and the inner tube has a fourth connecting hole, which is opposite to the third connecting hole.

[0011] Preferably, the cover has a step that matches the shape of the balancing cavity, and the step engages with the opening step of the balancing cavity.

[0012] Preferably, it also includes a steel ruler, a locking button, a locking spring, and a locking sleeve. The steel ruler is located on the inner tube and arranged along the length of the inner tube. Locking holes are sequentially opened on the steel ruler along the length. An installation groove is opened on the outer wall of the rod base, and the installation groove communicates with the inside of the rod base. The locking button and the locking spring are sequentially located in the installation groove. A movable groove is opened on the inner wall of the rod base. The locking sleeve is located in the movable groove and is fitted onto the inner tube. The width of the movable groove is greater than the width of the locking sleeve, and the width of the inner ring of the locking sleeve is greater than the width of the inner tube. The locking button is connected to the locking sleeve. The locking spring is located between the locking button and the locking sleeve. A locking tongue corresponding to the locking hole is formed on the locking sleeve, and the locking tongue is inserted into any of the locking holes.

[0013] Preferably, the mounting groove includes an upper groove and a lower groove. The upper groove is connected to the interior of the rod seat through the lower groove. The locking button and the locking spring are both located in the upper groove. A guide post is formed on the bottom wall of the upper groove. A lever is formed on the locking button. The lever passes through the lower groove and is connected to the locking sleeve. The locking spring is sleeved on the lever and the guide post.

[0014] Preferably, the outer wall of the inner tube is provided with a fitting groove along the length direction, and the left and right side walls of the fitting groove are provided with side grooves. The steel strip ruler is embedded in the fitting groove, and its left and right side edges are inserted into the side grooves.

[0015] Preferably, it also includes a threaded connector located at the upper end of the inner tube.

[0016] Preferably, the outer wall of the rod holder is covered with a soft protective sleeve.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] When the extension stroke of the paint rod of this utility model approaches its maximum range, that is, when the rear tube sleeve moves downward along the central support tube to near its maximum stroke, the upper step of its inner wall will abut against the lower step formed between the slider and the outer wall of the central support tube, forming a stepped engagement. As the rear tube sleeve moves further, it will push the slider and the entire movable support to move along the slide groove and compress the first spring. When the slider abuts against the end of the slide groove, it will limit the movable support, preventing it from moving further downward, thereby preventing the movement of the rear tube sleeve and the end rod connected through the transmission mechanism, forming over-extension protection, preventing excessive extension and damage to the transmission mechanism, and ensuring that the bidirectional extension function works normally. At the same time, the elastic force generated when the first spring is compressed will also be converted into a continuous resistance to prevent the rear tube sleeve from moving downward, and provide tactile feedback to the user, reminding the user that the extension stroke is close to the maximum range. After the control applied to the rear tube sleeve is removed, the first spring will restore its deformation and drive the movable support to reset. In this way, the rear tube sleeve and the end rod can be moved back a certain distance through the movable support, ensuring that the length of the entire paint rod remains within the allowable extension range. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the paint telescopic rod of this utility model when it is not extended;

[0020] Figure 2 This is a partial structural diagram of the inner tube of the paint telescopic rod of this utility model, which is equipped with a gap compensation mechanism;

[0021] Figure 3 This is a partial cross-sectional structural diagram of the paint telescopic rod of this utility model when it is not extended;

[0022] Figure 4 This is a partial structural diagram of the paint telescopic rod gap compensation mechanism of this utility model after disassembly;

[0023] Figure 5 This is a partial structural schematic diagram of the paint telescopic rod gap compensation mechanism of this utility model from another perspective after disassembly;

[0024] Figure 6 This is a partial structural diagram of the paint telescopic rod gap compensation mechanism of this utility model after it has been separated from the inner tube;

[0025] Figure 7 This is a schematic diagram of the overall structure of the paint telescopic rod of this utility model when the inner tube is fixed;

[0026] Figure 8 This is a utility model oil Figure 7 A magnified structural diagram of part A;

[0027] Figure 9 This is a schematic diagram of the cross-sectional structure of the inner tube and steel strip ruler of the paint telescopic rod of this utility model;

[0028] Figure 10 This is a schematic diagram of the overall structure of the paint telescopic rod of this utility model when it is extended.

[0029] As shown in the figure:

[0030] 1. Sleeve; 2. Inner tube; 201. Fourth connecting hole; 202. Fitting groove; 202a. Side groove; 3. Rod seat; 301. Mounting groove; 301a. Upper groove; 301b. Lower groove; 301c. Guide post; 302. Movable groove; 303. Soft sheath; 4. Clearance compensation mechanism; 4a. Balance seat; 4b. Compensator; 4c. Steel ball; 4d. Return spring; 401. Balance cavity; 402. Support arm; 402a. Spring cavity; 403. Limiting hole; 40 4. Base; 404a. Insertion platform; 404b. Third connecting hole; 405. Cover; 405a. Step position; 406. Center docking groove; 407. Support platform; 408. Upper connecting pipe; 409. Lower connecting pipe; 410. First connecting hole; 411. Second connecting hole; 412. Limiting platform; 412a. Limiting groove; 5. Steel strip ruler; 501. Locking hole; 6. Locking button; 601. Lever; 7. Locking spring; 8. Locking sleeve; 801. Locking tongue; 9. Threaded connector. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the purpose of simplifying the description and do not indicate or imply that the orientation is a specific orientation or specific orientation structure and operation. Therefore, they should not be construed as limiting this utility model.

[0033] like Figures 1 to 5 As shown, this utility model relates to a shock-absorbing and noise-reducing painted telescopic rod based on dynamic gap compensation. It includes a sleeve 1, an inner tube 2, and a rod seat 3. The rod seat 3 is sleeved on the upper end of the sleeve 1, serving to protect the end of the sleeve and reduce wear during use. The lower end of the inner tube 2 is inserted into the sleeve 1 and slides in cooperation with it. The overall length is adjusted by sliding the inner tube 2 along the axial direction of the sleeve 1. Specifically, it also includes a gap compensation mechanism 4, which includes a balance seat 4a, a compensator 4b, a steel ball 4c, and a return spring 4d. The balance seat 4a is located at the lower end of the inner tube 2. The balance seat 4a has a balance cavity 401 inside. The compensator 4b, steel ball 4c, and return spring 4d are all located within the balance cavity 401. Radially extending support arms 402 are arranged in sequence around the outer wall of the compensator 4b. It can be understood that there are multiple support arms 402, with the steel ball 4c, return spring 4d, and support arms 402 corresponding one-to-one. A spring cavity 402a is formed within each support arm 402. The return spring 4d is located within the spring cavity 402a, with one end abutting against the bottom wall of the spring cavity 402a and the other end abutting against the steel ball 4c. The spring cavity 402a... 2a ensures the linear extension and retraction of the return spring 4d, preventing deflection and extending its service life. The peripheral wall of the balance seat 4a has a limiting hole 403 corresponding to the steel ball 4c. The steel ball 4c is embedded in the limiting hole 403 and, supported by the return spring 4d, always maintains a tendency to press outward against the inner wall of the sleeve 1, filling the gap between the sleeve and the inner tube 2. This ensures stable radial positioning during the sliding extension and retraction of the inner tube 2. Furthermore, if the inner tube 2 deflects, the steel ball 4c on the corresponding side will be compressed by the inner wall of the sleeve 1, causing the return spring 4d to compress and deform. The return spring 4d generates… The reaction force will act as a buffer, reducing the amplitude of the inner tube 2's sway and conductive vibration, and automatically correcting it, thereby reducing the knocking noise generated by the collision between the inner tube 2 and the sleeve 1, allowing the inner tube 2 and the sleeve 1 to maintain a better alignment, ensuring the smoothness of sliding extension and retraction, while improving the contact stability between the connected paint rollers and other painting tools and the wall surface, greatly improving the smoothness of painting and the comfort of operation. In addition, during the sliding extension and retraction of the inner tube 2, the steel ball 4c will roll along the inner wall of the sleeve 1, thereby reducing the friction during extension and retraction, further improving the smoothness of the inner tube 2's extension and retraction.

[0034] like Figures 3 to 5 As shown, there are four sets of steel balls 4c, return springs 4d, and corresponding support arms 402, and the central axes of adjacent support arms 402 are perpendicular to each other. This ensures that the line connecting the center of adjacent steel balls 4c and the center of compensator 4b remains perpendicular. Through the compensation of four sets of mutually perpendicular steel balls 4c, the inner tube 2 can be uniformly supported within a 360° annular range, so that the inner tube 2 is subjected to symmetrical constraint force in any sway direction, thereby effectively suppressing sway and transmission vibration, and automatically correcting the position of the inner tube 2 under the action of the spring, so that the inner tube 2 and the sleeve 1 can better maintain the alignment state, significantly improving the anti-sway capability.

[0035] like Figures 2 to 6 As shown, the balance seat 4a consists of two parts: a seat body 404 and a cover body 405. A balance cavity 401 is formed at the bottom of the seat body 404. The cover body 405 covers the opening of the balance cavity 401, sealing it. This allows the compensator 4b, steel ball 4c, and return spring 4d to be enclosed in a sealed manner, preventing foreign objects from entering and affecting these components, and ensuring the stability of their relative positions. The bottom of the balance cavity 401 has a central docking groove 406, within which a support platform 407 is formed. The top and bottom of the compensator 4b have an upper connecting pipe 408 and a lower connecting pipe 409, respectively. The lower connecting pipe 409 is inserted downwards into the central docking groove 406 and abuts against the support platform 407 for initial positioning. The upper connecting pipe 408 extends upwards and abuts against the cover body 405. The support platform 407... The cover 405 has a first connecting hole 410 and a second connecting hole 411. The second connecting hole 411, the upper connecting pipe 408, the lower connecting pipe 409 and the first connecting hole 410 are interconnected. In this way, by passing a single positioning pin or a threaded fastener through the second connecting hole 411, the upper connecting pipe 408, the lower connecting pipe 409 and the first connecting hole 410 in sequence, the cover 405, the seat 404 and the compensator 4b can be fixed simultaneously. After the compensator 4b is fixed, its support arm 402, steel ball 4c, return spring 4d and limit hole 403 will strictly maintain the same axis. If a threaded fastener is used, the connection rigidity can be enhanced by the thread locking force. In addition, the split balance seat 4a is easy to disassemble and maintain. Only the positioning pin needs to be removed to separate the cover 405 from the seat 404 for direct inspection and maintenance without the need for overall replacement.

[0036] like Figure 4As shown, a limiting platform 412 corresponding to the support arm 402 is formed on the bottom wall of the balance cavity 401. That is, the number of limiting platforms 412 is equal to the number of support arms 402, and there are four sets of limiting platforms 412. A limiting groove 412a is formed on the limiting platform 412. The limiting groove 412a is opposite to the support arm 402 and its shape matches the shape of the support arm 402. The support arm 402 is embedded in the limiting groove 412a, thereby obtaining the support of the limiting platform 412 and being limited by the groove wall of the limiting groove 412a. With the help of the positioning pin or threaded fastener of the fixed compensator 4b, the deviation of the compensator 4b is effectively limited.

[0037] like Figure 6 As shown, a base 404a is formed at the bottom of the base 404. The base 404a is inserted into the inner tube 2. The mating surface between the base 404a and the inner tube 2 is non-circular to restrict the relative rotation between the inner tube 2 and the balance seat 4a. A third connecting hole 404b is provided on the base 404a, and a fourth connecting hole 201 is provided on the inner tube 2. The fourth connecting hole 201 is opposite to the third connecting hole 404b. The third connecting hole 404b and the fourth connecting hole 201 can be connected by a locating pin or a threaded fastener to fix the base 404a and the integral balance seat 4a to the inner tube 2.

[0038] like Figure 5 As shown, a step 405a is formed on the cover 405. The shape of the step 405a matches the opening of the balance cavity 401. After the cover 405 is placed on the seat 404, the step 405a engages with the opening step of the balance cavity 401. This restricts the horizontal movement of the cover 405 and keeps the balance cavity 401 more airtight, further protecting the internal compensator 4b, steel ball 4c and return spring 4d.

[0039] like Figures 7 to 10As shown, it also includes a steel ruler 5, a locking button 6, a locking spring 7, and a locking sleeve 8. The steel ruler 5 is mounted on the inner tube 2 and arranged along its length. Locking holes 501 are sequentially formed along the length of the steel ruler 5. In this invention, the number of locking holes 501 is 50. An installation groove 301 is formed on the outer wall of the rod base 3, communicating with the interior of the rod base 3. The locking button 6 and the locking spring 7 are sequentially arranged within the installation groove 301. A movable groove 302 is formed on the inner wall of the rod base 3. The locking sleeve 8 is located within the movable groove 302 and fitted onto the inner tube 2. The width of the movable groove 302 is greater than the width of the locking sleeve 8, and the width of the inner ring of the locking sleeve 8 is greater than the width of the inner tube 2. This avoids the inner tube 2 restricting the locking sleeve 8, allowing the locking sleeve 8 to move up and down within the movable groove 302. The locking button 6... Connected to the locking sleeve 8, the locking spring 7 is located between the locking button 6 and the locking sleeve 8. The locking sleeve 8 has a locking tongue 801 corresponding to the locking hole 501. The locking tongue 801 is inserted into any of the locking holes 501 to lock the steel strip ruler 5 and the connected inner tube 2, so that the inner tube 2 is kept in the adjusted position. In the locked state, the locking button 6 is located in the initial position in the mounting cavity, and the locking spring 7 is not compressed. When it is necessary to release the lock to adjust the length of the paint telescopic rod of this utility model, the locking button 6 can be pressed. The locking spring 7 will be deformed by the pressure, and the locking button 6 will push the locking sleeve 8 to move in the movable groove 302. At this time, the locking tongue 801 can disengage from the locking hole 501, thereby releasing the lock. The locking tongue 801 can achieve precise adjustment by cooperating with the locking holes 501 in different positions, thus making it more suitable for the unfolding of paint painting operations.

[0040] like Figure 8 As shown, the mounting groove 301 consists of two parts: an upper groove 301a and a lower groove 301b. The upper groove 301a is connected to the interior of the rod seat 3 through the lower groove 301b. The locking button 6 and the locking spring 7 are both located in the upper groove 301a. A guide post 301c is formed on the bottom wall of the upper groove 301a. A lever 601 is correspondingly formed on the locking button 6. The lever 601 passes through the lower groove 301b and connects to the locking sleeve 8. The locking spring 7 is sleeved on the lever 601 and the guide post 301c. The lever 601 and the guide post 301c keep the locking spring 7 in a straight line, preventing deflection and thus extending its service life.

[0041] like Figure 10 As shown, an engagement groove 202 is provided on the outer wall of the inner tube 2 along the length direction. Side grooves 202a are provided on the left and right side walls of the engagement groove 202. The steel strip ruler 5 is embedded in the engagement groove 202, and its left and right side edges are inserted into the side grooves 202a. The movement of the steel strip ruler 5 is restricted by the side grooves 202a to prevent the steel strip ruler 5 from falling off the inner tube 2, thereby achieving a stable connection with the inner tube 2.

[0042] Furthermore, it also includes a threaded connector 9, which is located at the upper end 2 of the inner tube. The threaded connector 9 allows for threaded connection with painting and repair tools such as paintbrushes, paint rollers, and paint scrapers, enabling quick assembly and disassembly, thereby improving the efficiency of painting and repair operations.

[0043] Furthermore, a soft sheath 303 is provided on the outer wall of the pole base 3. The soft sheath 303 can provide better comfort for the head when the operator uses the paint telescopic pole of this utility model for a long time, reduce hand fatigue and prevent blisters.

[0044] Combination Figures 1 to 10 The inner tube 2 of this utility model has a gap compensation mechanism 4 at its lower end. Each steel ball 4c, under the action of a return spring 4d, maintains a tendency to press outward against the inner wall of the sleeve 1, thus supporting the inner tube 2. There are four sets of steel balls 4c, return springs 4d, and corresponding compensator 4b support arms 402. The inner tube 2 can be evenly supported within a 360° annular range. When the inner tube 2 slides, it is radially positioned. When the inner tube 2 wobbles, the corresponding steel ball 4c... The compression of the inner wall of sleeve 1 will cause the return spring 4d to compress and deform. The reaction force generated by the return spring 4d will play a buffering role, reducing the amplitude of the sway and conductive vibration of the inner tube 2, and automatically correcting the position of the inner tube 2. The cover 405 and seat 404 of the compensator 4b and the balance seat 4a can be fixed by positioning pins or threaded fasteners. The seat 404 of the balance seat 4a is first inserted into the inner tube 2 through the insertion platform 404a and then fixed by positioning pins or threaded fasteners, which improves the stability of the compensator 4b and the balance seat 4a. The cover 405 and seat 404 of the balance seat 4a are also connected by a step position 405a to form a step fit, which improves the sealing of the balance cavity 401. The threaded connector 9 can be threadedly connected to painting and repair tools such as paintbrushes, paint rollers, and paint scrapers. When it is necessary to adjust the position of the inner tube 2, simply press the locking button 6. The locking spring 7 will be compressed and deformed, and the locking button 6 will push the locking sleeve 8 to move in the movable groove 302. At this time, the locking tongue 8 01 can disengage from the lock hole 501, thereby unlocking the inner tube 2, which can move freely. After adjustment, the locking button 6 is released, and under the action of the locking spring 7, the locking tongue 801 will be embedded in the corresponding lock hole 501 to fix the steel strip ruler 5 and the connected inner tube 2. The locking tongue 801 can achieve precise adjustment by cooperating with the lock holes 501 in different positions, which is more suitable for painting operations. The protective sleeve on the outer wall of the rod seat 3 can reduce hand fatigue for operators during painting operations.

[0045] The embodiments and descriptions above are merely illustrative of the principles and preferred embodiments of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A vibration-damping and noise-reducing painted telescopic rod based on dynamic gap compensation, comprising a sleeve (1), an inner tube (2), and a rod seat (3), wherein the rod seat (3) is sleeved on the upper end of the sleeve (1), and the lower end of the inner tube (2) is inserted into the sleeve (1) and slides in cooperation with the sleeve (1), characterized in that, It also includes a gap compensation mechanism (4), which includes a balance seat (4a), a compensator (4b), a steel ball (4c), and a return spring (4d). The balance seat (4a) is fixed to the lower end of the inner tube (2). The balance seat (4a) has a balance cavity (401) inside. The compensator (4b), steel ball (4c), and return spring (4d) are all located in the balance cavity (401). The outer wall of the compensator (4b) is arranged with radially extending support arms in sequence. 402), the steel ball (4c), the return spring (4d) and the support arm (402) correspond to each other one by one. The support arm (402) has a spring cavity (402a). The return spring (4d) is located in the spring cavity (402a) and one end of it abuts against the steel ball (4c). The peripheral side wall of the balance seat (4a) has a limiting hole (403) corresponding to the steel ball (4c). The steel ball (4c) is embedded in the limiting hole (403) and abuts against the inner wall of the sleeve (1).

2. The shock-absorbing and noise-reducing painted telescopic pole based on dynamic gap compensation according to claim 1, characterized in that, The number of steel balls (4c), return springs (4d) and corresponding support arms (402) is four, and the central axes of adjacent support arms (402) are perpendicular to each other.

3. The shock-absorbing and noise-reducing painted telescopic pole based on dynamic gap compensation according to claim 1, characterized in that, The balance seat (4a) includes a seat body (404) and a cover body (405). The bottom of the seat body (404) has a balance cavity (401). The cover body (405) covers the seat body (404) and closes the balance cavity (401). The bottom of the balance cavity (401) has a central docking groove (406). A support platform (407) is formed in the central docking groove (406). The top and bottom of the compensator (4b) are respectively formed with upper... The connecting pipe (408) and the lower connecting pipe (409) are provided. The lower connecting pipe (409) is embedded in the central docking groove (406) and abuts against the support platform (407). The support platform (407) has a first connecting hole (410) and the cover (405) has a second connecting hole (411). The second connecting hole (411), the upper connecting pipe (408), the lower connecting pipe (409) and the first connecting hole (410) are interconnected.

4. The shock-absorbing and noise-reducing painted telescopic pole based on dynamic gap compensation according to claim 3, characterized in that, A limiting platform (412) corresponding to the support arm (402) is formed on the bottom wall of the balancing cavity (401). A limiting groove (412a) is formed on the limiting platform (412). The shape of the limiting groove (412a) matches the support arm (402), and the support arm (402) is embedded in the limiting groove (412a).

5. The shock-absorbing and noise-reducing painted telescopic pole based on dynamic gap compensation according to claim 4, characterized in that, The bottom of the base (404) has a insertion platform (404a) which is inserted into the inner tube (2). The insertion platform (404a) has a third connecting hole (404b) and the inner tube (2) has a fourth connecting hole (201) which is opposite to the third connecting hole (404b).

6. The shock-absorbing and noise-reducing painted telescopic pole based on dynamic gap compensation according to claim 5, characterized in that, The cover (405) has a step (405a) that matches the shape of the balance cavity (401), and the step (405a) engages with the opening step of the balance cavity (401).

7. The shock-absorbing and noise-reducing painted telescopic pole based on dynamic gap compensation according to claim 1, characterized in that, It also includes a steel ruler (5), a locking button (6), a locking spring (7), and a locking sleeve (8). The steel ruler (5) is mounted on the inner tube (2) and arranged along the length of the inner tube (2). The steel ruler (5) has locking holes (501) sequentially opened along the length of the inner tube (2). The outer wall of the rod base (3) has a mounting groove (301) that communicates with the inside of the rod base (3). The locking button (6) and the locking spring (7) are sequentially arranged in the mounting groove (301). The inner wall of the rod base (3) has a movable locking sleeve (8). The groove (302) is provided in the movable groove (302) and sleeved on the inner tube (2). The width of the movable groove (302) is greater than the width of the lock sleeve (8), and the width of the inner ring of the lock sleeve (8) is greater than the width of the inner tube (2). The locking button (6) is connected to the lock sleeve (8). The locking spring (7) is located between the locking button (6) and the lock sleeve (8). The lock sleeve (8) has a locking tongue (801) corresponding to the lock hole (501). The locking tongue (801) is inserted into any lock hole (501).

8. The shock-absorbing and noise-reducing painted telescopic pole based on dynamic gap compensation according to claim 7, characterized in that, The mounting groove (301) includes an upper groove (301a) and a lower groove (301b). The upper groove (301a) is connected to the interior of the rod seat (3) through the lower groove (301b). The locking button (6) and the locking spring (7) are both located in the upper groove (301a). A guide post (301c) is formed on the bottom wall of the upper groove (301a). A lever (601) is correspondingly formed on the locking button (6). The lever (601) passes through the lower groove (301b) and is connected to the lock sleeve (8). The locking spring (7) is sleeved on the lever (601) and the guide post (301c).

9. The shock-absorbing and noise-reducing painted telescopic pole based on dynamic gap compensation according to claim 8, characterized in that, The inner tube (2) has a fitting groove (202) along its length on the outer wall. The fitting groove (202) has a side groove (202a) on its left and right side walls. The steel strip ruler (5) is embedded in the fitting groove (202) and its left and right side edges are inserted into the side groove (202a).

10. The shock-absorbing and noise-reducing painted telescopic pole based on dynamic gap compensation according to claim 1, characterized in that, It also includes a threaded connector (9) located at the upper end of the inner tube (2).

11. The shock-absorbing and noise-reducing painted telescopic pole based on dynamic gap compensation according to claim 1, characterized in that, The outer wall of the rod seat (3) is covered with a soft sheath (303).

Images