Stepless distance-adjusting telescopic rod

Abstract

The stepless distance adjusting telescopic rod comprises an inner pipe, an outer pipe, an adjusting sleeve and a clamping jaw sleeve, the clamping jaw sleeve comprises a sleeve body and a clamping jaw arranged on the sleeve body, a first thread is arranged on the outer side of the sleeve body, first teeth are arranged on the inner side of the clamping jaw, a through hole is formed in the side face of the first end of the outer pipe, and a second thread is arranged in the through hole. The clamping jaw sleeve is arranged at the first end of the outer pipe in a sleeving mode, the clamping jaw is located in the through hole, the inner pipe is arranged in the outer pipe, second teeth are arranged on the side face of the inner pipe, the adjusting sleeve is connected to the clamping jaw sleeve in a screwed mode, a contraction section is arranged on the adjusting sleeve, and the contraction section presses the clamping jaw to be meshed with the inner pipe. The utility model has the advantages that the adjusting sleeve is used for controlling the clamping jaw to be meshed with the rack for fixation, the adjustment is convenient and fast, and the adjustment precision is high.

Description

Technical Field

[0001] This utility model relates to the field of telescopic pole technology, and in particular to a stepless adjustable telescopic pole. Background Technology

[0002] Telescopic poles are widely used in mops, brooms, clotheslines, and other applications due to their adjustable length and ease of packaging. However, existing stepless telescopic poles typically use a threaded connection between the outer and inner tubes, requiring continuous rotation for length adjustment. While this provides high precision, it also results in low efficiency. Summary of the Invention

[0003] This utility model mainly solves the above-mentioned problems and provides a stepless adjustable telescopic rod that is convenient to adjust and has high adjustment accuracy.

[0004] The technical solution adopted by this utility model to solve its technical problem is a stepless adjustable telescopic rod, including an inner tube, an outer tube, an adjusting sleeve, and a claw sleeve. The claw sleeve includes a sleeve body and a claw disposed on the sleeve body. The outer side of the sleeve body is provided with a first thread, and the inner side of the claw is provided with a first tooth. The first end of the outer tube is provided with a through hole. The claw sleeve is sleeved on the first end of the outer tube and the claw is located in the through hole. The inner tube is disposed in the outer tube and the side of the inner tube is provided with a second tooth. The adjusting sleeve is screwed onto the claw sleeve and the adjusting sleeve is provided with a contraction section. The contraction section compresses the claw to engage with the inner tube.

[0005] As a preferred embodiment of the above solution, the adjusting sleeve includes a screw-in section and a shrinkage section, the first end of the shrinkage section is connected to the screw-in section, and the inner diameter of the shrinkage section gradually decreases from the first end to the second end.

[0006] As a preferred embodiment of the above solution, the outer surface of the contraction section is uniformly distributed with convex strips extending along the axial direction of the contraction section.

[0007] As a preferred embodiment of the above solution, the outer side of the end of the claw matches the inner sidewall of the contraction section.

[0008] As a preferred embodiment of the above solution, the inner tube includes an inner sleeve and a rack, the rack is disposed in the inner sleeve, the inner sleeve has a strip groove on its side, and the rack has a second tooth corresponding to the strip groove side.

[0009] As a preferred embodiment of the above solution, the first end of the inner sleeve is provided with an elastic pin, which passes through the inner sleeve and the rack.

[0010] As a preferred embodiment of the above solution, the second end of the inner sleeve is provided with a notch, and the second end of the rack is provided with a limiting protrusion that matches the notch.

[0011] As a preferred embodiment of the above solution, a soft rubber sleeve is provided at the second end of the inner sleeve.

[0012] As a preferred embodiment of the above solution, the rack and inner sleeve are cylindrical.

[0013] The advantages of this invention are: the adjustment sleeve controls the engagement of the chuck and the rack for fixation, which is convenient and has high adjustment accuracy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a continuously adjustable telescopic rod.

[0015] Figure 2 This is an exploded view of a continuously adjustable telescopic boom.

[0016] Figure 3 for Figure 2 A magnified view of a portion of region A in the middle.

[0017] Figure 4 for Figure 2 A magnified view of a portion of region B in the middle.

[0018] Figure 5 for Figure 2 A magnified view of a portion of region C.

[0019] Figure 6 This is a cross-sectional structural diagram of a continuously adjustable telescopic rod.

[0020] Figure 7 for Figure 6 A magnified view of a portion of region D.

[0021] 1-Outer tube 2-Inner tube 3-Adjusting sleeve 4-Soft rubber sleeve 5-Inner sleeve 6-Rack 7-Through hole 8-Sleeve body 9-Claw 10-Strip groove 11-Notch 12-Limiting protrusion 13-Second tooth 14-Elastic pin. Detailed Implementation

[0022] The technical solution of this utility model will be further described below through embodiments and in conjunction with the accompanying drawings.

[0023] Example:

[0024] This embodiment describes a stepless adjustable telescopic rod, such as... Figures 1 to 7As shown, it includes an inner tube 2, an outer tube 1, an adjusting sleeve 3, and a claw sleeve. The inner tube 2 is set inside the outer tube 1. The inner tube 2 includes a cylindrical inner sleeve 5 and a rack 6. The rack 6 is set inside the inner sleeve 5. The inner sleeve 5 has a strip groove 10 on its side. The rack 6 has a second tooth 13 on the side corresponding to the strip groove. The first end of the inner sleeve has an elastic pin 14. The elastic pin 14 passes through the inner sleeve 5 and the rack 6. The second end of the inner sleeve 5 has a notch 11. The second end of the rack 6 has a limiting protrusion 12 that matches the notch. The limiting protrusion 12 and the notch 11 limit the angle of the rack in the inner sleeve to ensure that the second tooth 13 is aligned with the strip groove 10. In addition, a soft rubber sleeve 4 is also provided at the second end of the inner sleeve. The claw sleeve includes a sleeve body 8 and a claw 9 set on the sleeve body. The outer side of the sleeve body 8 is provided with a first thread, and the inner side of the claw 9 is provided with a first tooth. The first end of the outer tube 1 is provided with a through hole 7. The claw sleeve is sleeved on the first end of the outer tube and is fixed by the claw 9 being inserted into the through hole 7. The adjusting sleeve 3 is screwed on the claw sleeve. By turning the adjusting sleeve 3, the inner tube can be locked and unlocked, thereby realizing the length adjustment of the telescopic rod.

[0025] The adjusting sleeve includes a screw-in section and a retractable section. The outer surface of the retractable section has evenly distributed ridges extending axially along its length. These ridges enhance friction, facilitating the user's turning of the adjusting sleeve. The first end of the retractable section connects to the screw-in section. The inner diameter of the retractable section gradually decreases from the first end to the second end, and the outer surface of the chuck end matches the inner wall of the retractable section. When the screw-in section is tightened onto the chuck sleeve, the second end of the retractable section moves towards the chuck sleeve, pressing the chuck into the through hole. This engages the first tooth on the chuck with the second tooth on the inner tube, locking the inner tube in place. When length adjustment is needed, the screw-in section is loosened, moving the second end of the retractable section away from the chuck sleeve. The chuck then returns to its original position due to its elasticity. At this point, the first tooth on the chuck no longer engages with the second tooth on the inner tube, allowing for free adjustment of the length of the inner tube extending beyond the outer tube, achieving rapid stepless adjustment. Furthermore, since the inner and outer tubes are fixed by the teeth, the adjustment accuracy of the telescopic rod is related to the tooth spacing; a smaller tooth spacing results in higher stepless adjustment accuracy.

[0026] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A continuously variable ratio telescopic rod characterized by: The device comprises an inner tube, an outer tube, an adjusting sleeve and a claw sleeve, the claw sleeve comprises a sleeve body and claws arranged on the sleeve body, the outer side of the sleeve body is provided with a first thread, the inner side of the claw is provided with a first tooth, the first end of the outer tube is provided with a through hole, the claw sleeve is arranged on the first end of the outer tube and the claw is located in the through hole, the inner tube is arranged in the outer tube and the side of the inner tube is provided with a second tooth, the adjusting sleeve is screwed on the claw sleeve, the adjusting sleeve is provided with a contraction section, the contraction section presses the claw and the inner tube to engage.

2. The stepless pitch-reversing telescopic rod according to claim 1, characterized in that: The adjusting sleeve comprises a screwing section and a contraction section, the first end of the contraction section is connected with the screwing section, and the inner diameter of the contraction section gradually decreases from the first end to the second end.

3. The stepless pitch-reversing telescopic rod according to claim 2, characterized in that: The outer side of the contraction section is uniformly distributed with convex strips extending along the axial direction of the contraction section.

4. The stepless pitch-reversing telescopic rod according to claim 2, characterized in that: The outer side of the end of the claw matches the inner side wall of the contraction section.

5. The stepless pitch-reversing telescopic rod according to claim 1, characterized in that: The inner tube comprises an inner sleeve and a rack, the rack is arranged in the inner sleeve, the side of the inner sleeve is provided with a strip-shaped slot, and the side of the rack corresponding to the strip-shaped slot is provided with a second tooth.

6. The stepless pitch-reversing telescopic rod according to claim 5, characterized in that: The first end of the inner sleeve is provided with an elastic pin, and the elastic pin is arranged through the inner sleeve and the rack.

7. The stepless pitch-reversing telescopic rod according to claim 5, characterized in that: The second end of the inner sleeve is provided with a notch, and the second end of the rack is provided with a limiting protrusion matched with the notch.

8. The stepless pitch-reversing telescopic rod according to claim 7, characterized in that: The second end of the inner sleeve is provided with a soft rubber sleeve.

9. The stepless pitch-reversing telescopic rod according to claim 5, characterized in that: The rack and the inner sleeve are cylindrical.

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