Telescopic rod capable of being locked

Abstract

The telescopic rod capable of being locked comprises a first section and a second section, and the first section is arranged in one end of the second section in a pluggable and penetrating mode. The rotary sleeve is rotatably arranged on the first section in a sleeving manner; the plurality of jacking blocks are positioned in the second section, are distributed along the circumferential direction of the second section and are used for jacking the first section to prevent the first section from stretching and retracting in the second section; and the reversing structure is used for converting the rotary motion of the rotary sleeve into the radial motion of the jacking blocks along the first section. According to the telescopic rod capable of being locked, locking and unlocking operation can be carried out through manual ground gripping, and the problem that an existing telescopic rod is inconvenient to lock and unlock due to the fact that locking is carried out through a bolt is solved.

Description

Technical Field

[0001] The utility model relates to a telescopic rod, in particular to a telescopic rod capable of being locked. Background Art

[0002] The telescopic rod is a commonly used mechanical component, including a first section and a second section. The first section is inserted into one end of the second section in a pluggable manner. In order to enable the telescopic rod to maintain its length when extended or retracted to a set length, a locking mechanism needs to be provided to lock the first section so that it cannot be extended or retracted on the second section. The existing method for locking the telescopic rod to maintain its length is to thread a bolt onto the second section and then tighten it against the first section. This locking method requires a wrench to turn the bolt to lock and unlock, resulting in inconvenience during locking and unlocking. Summary of the Utility Model

[0003] The utility model provides a telescopic rod capable of being locked, which can perform locking and unlocking operations by simply grasping it by hand, and solves the problem of inconvenience in locking and unlocking existing telescopic rods locked by bolts.

[0004] The above technical problems are solved by the following technical solutions: A telescopic rod capable of being locked includes a first section and a second section. The first section is inserted into one end of the second section in a pluggable manner. It is characterized in that it further includes a rotating sleeve rotatably sleeved on the first section, a plurality of top blocks located in the second section and distributed circumferentially along the second section for pressing against the first section to prevent the first section from extending or retracting in the second section, and a commutation structure for converting the rotational movement of the rotating sleeve into the radial movement of the top blocks along the first section. When the first section needs to be extended or retracted, the rotating sleeve is rotated so that the top blocks move away from the first section, thereby losing the pressing effect on the first section, so that the first section can be extended or retracted. When the first section is not extended or retracted, the first section is pressed tightly by the top blocks.

[0005] Preferably, the rotating sleeve is sleeved on and rotatably connected to the second section. A positioning structure is provided between the second section and the rotating sleeve to prevent the rotating sleeve from moving axially along the second section. The commutation structure includes a conical section arranged in the second section, an inner sleeve inserted into the conical section, and a locking spring for driving the inner sleeve to move towards the inside of the conical section. One end of the top block abuts against the inner peripheral surface of the conical section, and the other end passes through the inner sleeve and abuts against the peripheral surface of the first section. A commutation inclined surface is provided on one of the inner sleeve and the rotating sleeve, and a driving block is provided on the other and abuts against the commutation inclined surface. The commutation inclined surface is used to convert the rotational movement of the rotating sleeve into the translational movement of the inner sleeve along the axis of the second section. When the first section does not extend or retract, under the action of the locking spring, the inner sleeve moves towards the inside of the second section and drives the top block to move together. The result of the movement of the top block is to cooperate with the conical section to make the top block tightly press against the peripheral surface of the first section, playing a role in preventing the first section from extending or retracting. When it is necessary to extend or retract the first section, rotate the rotating sleeve so that the rotating sleeve drives the inner sleeve to move towards the outside of the second section, thereby causing the top block to release the pressing action on the first section. It is convenient for locking and retracting.

[0006] Preferably, the rotating sleeve is provided with an inwardly turned edge that covers the end face of the second section. One end of the locking spring abuts against the inner sleeve, and the other end abuts against the inwardly turned edge. The structure is compact and it is convenient to install the locking spring.

[0007] Preferably, the inner sleeve is provided with a large-diameter section, and a step is formed between the large-diameter section and the inner sleeve and is located inside the inner sleeve. The locking spring abuts against the step. It can improve the structural compactness.

[0008] Preferably, an inner sleeve part convex block that covers the end face of the second section is provided on the outer peripheral surface of the inner sleeve. The commutation inclined surface is provided on the end face at one end of the inner sleeve part convex block along the axis of the second section, and the driving block is provided on the inner peripheral surface of the rotating sleeve. It is convenient for manufacturing and layout.

[0009] Preferably, a rotating sleeve part convex block is provided on the inner peripheral surface of the rotating sleeve. The rotating sleeve part convex block is provided with a limiting hole, and the inner sleeve part convex block is inserted into the limiting hole. The driving block is located in the limiting hole. It can prevent the driving block from disengaging from the annular inclined surface.

[0010] Preferably, a limiting notch is provided on the end face of the second section, and the inner sleeve part convex block is inserted into the limiting notch. A limiting block that is inserted into the limiting notch is provided on the outer peripheral surface of the inner sleeve. It can conveniently brake whether the rotating sleeve rotates in place.

[0011] Preferably, the positioning structure includes an annular clamping block extending along the circumferential direction of the second section and provided on the circumferential surface of the second section, and an annular clamping groove extending along the circumferential direction of the rotating sleeve and provided on the inner circumferential surface of the rotating sleeve. The annular clamping block is inserted into the annular clamping groove to prevent the rotating sleeve from moving axially along the second section. The structure is simple.

[0012] Preferably, a wear-resistant sleeve is inserted into the conical section. The inner circumferential surface of the wear-resistant sleeve is conical, and the top block abuts against the inner circumferential surface of the wear-resistant sleeve. This can prevent the inner circumferential surface of the conical section from being worn out due to repeated locking and unlocking, resulting in the loss of the locking function.

[0013] Preferably, the first section is a prismatic structure. The top block can also prevent the first section from rotating.

[0014] The utility model has the following advantages: it is convenient to unlock and lock, with a novel structure and a simple appearance. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the utility model;

[0016] Figure 2 is an enlarged schematic diagram of the rotating sleeve;

[0017] Figure 3 is a schematic diagram of the utility model when the rotating sleeve and the first section are removed;

[0018] Figure 4 is the Figure 3 partial enlarged schematic diagram at A of this;

[0019] Figure 5 is a schematic diagram of the utility model when the inner sleeve is further removed;

[0020] Figure 6 is the Figure 5 partial enlarged schematic diagram at B of this.

[0021] In the figure: the first section 1, the second section 2, the rotating sleeve 3, the top block 4, the annular clamping block 5, the annular clamping groove 6, the conical section 7, the inner sleeve 8, the locking spring 9, the wear-resistant sleeve 10, the reversing inclined surface 11, the driving block 12, the inner flanging 13, the step 14, the inner sleeve part convex block 15, the rotating sleeve part convex block 16, the limiting hole 17, the limiting notch 18, the limiting stop block 19. Detailed Description of the Invention

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Referring to Figures 1 to 6 , a telescopic rod capable of being locked, comprising a first section 1 and a second section 2, and the first section is detachably inserted into one end of the second section. The first section is a prismatic structure.

[0024] It further includes a rotating sleeve 3 rotatably sleeved on the first section, a plurality of top blocks 4 located in the second section and distributed circumferentially along the second section for abutting against the first section to prevent the first section from telescoping in the second section, and a commutation structure for converting the rotational movement of the rotating sleeve into the radial movement of the top blocks along the first section. The stop block is a spherical structure. The rotating sleeve is sleeved and rotatably connected to the second section, and a positioning structure for preventing the rotating sleeve from axially moving along the second section is provided between the second section and the rotating sleeve. The positioning structure includes an annular clamping block 5 provided on the circumferential surface of the second section and extending circumferentially along the second section, and an annular clamping groove 6 provided on the inner circumferential surface of the rotating sleeve and extending circumferentially along the rotating sleeve. The annular clamping block is inserted into the annular clamping groove to prevent the rotating sleeve from axially moving relative to the second section along the second section. The commutation structure includes a conical section 7 provided in the second section, an inner sleeve 8 inserted into the conical section, and a locking spring 9 for driving the inner sleeve to move towards the inside of the conical section. A wear-resistant sleeve 10 is inserted into the conical section, and the inner circumferential surface of the wear-resistant sleeve is conical. One end of the top block abuts against the inner circumferential surface of the wear-resistant sleeve, and the other end passes through the inner sleeve and abuts against the circumferential surface of the first section. A commutation inclined surface 11 is provided on one of the inner sleeve and the rotating sleeve, and a driving block 12 abuting against the commutation inclined surface is provided on the other. The commutation inclined surface is used for converting the rotational movement of the rotating sleeve into the translational movement of the inner sleeve along the axial direction of the second section. An inward flanging 13 shielding the end surface of the second section is provided at one end of the rotating sleeve. One end of the stop spring abuts against the inner sleeve, and the other end abuts against the inward flanging. The inner sleeve is provided with a large-diameter section, and a step 14 located inside the inner sleeve is formed between the large-diameter section and the inner sleeve. The locking spring abuts against the step. An inner sleeve part convex block 15 shielding the end surface of the second section is provided on the outer circumferential surface of the inner sleeve, and the commutation inclined surface is provided on the end surface of the inner sleeve part convex block along one end of the axial direction of the second section. The driving block is provided on the inner circumferential surface of the rotating sleeve. A rotating sleeve part convex block 16 is provided on the inner circumferential surface of the rotating sleeve. The rotating sleeve part convex block is provided with a limiting hole 17, and the inner sleeve part convex block is inserted into the limiting hole. The driving block is located in the limiting hole. A limiting notch 18 is provided on the end surface of the second section, and the inner sleeve part convex block is inserted into the limiting notch. A limiting stop block 19 inserted into the limiting notch is provided on the outer circumferential surface of the inner sleeve.

[0025] When the first section does not expand or contract, under the action of the locking spring, the inner sleeve moves towards the inside of the second section and drives the top block to move together. The result of the movement of the top block is to cooperate with the conical surface section so that the top block presses tightly against the circumferential surface of the first section, playing a role in preventing the first section from expanding or contracting. When the first section needs to be expanded or contracted, rotate the rotating sleeve so that the rotating sleeve drives the inner sleeve to move towards the outside of the second section, thereby enabling the top block to release the pressing action on the first section.

[0026] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lockable telescopic rod, comprising a first section and a second section, wherein the first section is inserted and removably inserted into one end of the second section, characterized in that: It also includes a rotating sleeve that can be rotatably sleeved on the first section, a plurality of push blocks located in the second section and distributed along the circumference of the second section for pushing against the first section to prevent the first section from extending and retracting in the second section, and a reversing structure that converts the rotational motion of the rotating sleeve into radial motion of the push blocks along the first section.

2. The lockable telescopic rod according to claim 1, characterized in that: The rotating sleeve is sleeved and rotatably connected to the second section, a positioning structure is provided between the second section and the rotating sleeve to prevent the rotating sleeve from moving axially along the second section, the reversing structure includes a conical section arranged in the second section, an inner sleeve inserted in the conical section and a locking spring driving the inner sleeve to move toward the conical section, one end of the top block abuts against the inner circumferential surface of the conical section, and the other end passes through the inner sleeve and abuts against the circumferential surface of the first section, one of the inner sleeve and the rotating sleeve is provided with a reversing inclined surface, and the other is provided with a driving block abutting against the reversing inclined surface, and the reversing inclined surface is used to convert the rotational motion of the rotating sleeve into the translational motion of the inner sleeve along the axial direction of the second section.

3. The lockable telescopic rod according to claim 2, characterized in that: One end of the rotating sleeve is provided with an inner turning edge which blocks the end surface of the second section, one end of the locking spring is in contact with the inner sleeve, and the other end is in contact with the inner turning edge.

4. The lockable telescopic rod according to claim 3, characterized in that: The inner sleeve is provided with a large diameter section, a step located inside the inner sleeve is formed between the large diameter section and the inner sleeve, and the locking spring abuts against the step.

5. A lockable telescopic rod according to claim 2, 3 or 4, characterized in that: The outer circumferential surface of the inner sleeve is provided with an inner sleeve protrusion that blocks the end surface of the second section, the reversing inclined surface is arranged on the end surface of the inner sleeve protrusion along one end of the second section axial direction, and the driving block is arranged on the inner circumferential surface of the rotating sleeve.

6. The lockable telescopic rod according to claim 5, characterized in that: A rotating sleeve portion convex block is disposed on the inner circumferential surface of the rotating sleeve, the rotating sleeve portion convex block is provided with a limiting hole, the inner sleeve portion convex block is inserted into the limiting hole, and the driving block is located in the limiting hole.

7. The lockable telescopic rod according to claim 5, characterized in that: A limiting notch is provided on the end surface of the second section, the inner sleeve protrusion is inserted into the limiting notch, and a limiting stopper is provided on the outer circumferential surface of the inner sleeve and inserted into the limiting notch.

8. The lockable telescopic rod according to claim 2, 3 or 4, characterized in that: The positioning structure includes an annular clamping block arranged on the circumferential surface of the second section and extending in the circumferential direction of the second section, and an annular clamping groove arranged on the inner circumferential surface of the rotating sleeve and extending in the circumferential direction of the rotating sleeve. The annular clamping block is inserted into the annular clamping groove to prevent the rotating sleeve from moving along the axial direction of the second section relative to the second section.

9. A lockable telescopic rod according to claim 2, 3 or 4, characterized in that: A wear-resistant sleeve is inserted into the conical surface section, the inner circumference of the wear-resistant sleeve is a conical surface, and the top block abuts against the inner circumference of the wear-resistant sleeve.

10. A lockable telescopic rod according to claim 2, 3 or 4, characterized in that: The first section is a prismatic structure.

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