Telescopic rod fixing structure and telescopic rod

Abstract

The utility model discloses a telescopic rod fixing structure and a telescopic rod. A first through hole eccentric to a center shaft of a small column part penetrates through the small column part in the length direction; a second through hole which is eccentric to a central shaft of the large column piece penetrates through the cylindrical large column piece in the length direction; according to the telescopic rod fixing structure and the telescopic rod provided by the utility model, the small-diameter section of the small column piece extends into the small sleeve rod to form fixation, and the large-diameter section of the small column piece is clamped outside the small sleeve rod, so that the small column piece is well fixed; the bolt assembly penetrates through the small column piece and the large column piece to complete fixation. Friction force generated by the large-diameter section and the large sleeve rod enables the large sleeve rod not to fall off from the small sleeve rod easily. In the process of rotating the small sleeve rod, the first through hole and the second through hole are both eccentric, rotation generated between the small column piece and the large column piece enables the large column piece and the small column piece to be staggered, friction fixation is formed between the large column piece and the inner wall of the large sleeve rod, and the small sleeve rod and the large sleeve rod can be fixed at any proper position.

Description

Technical Field

[0001] This utility model relates to the field of telescopic pole structures, and in particular to a telescopic pole fixing structure and a telescopic pole. Background Technology

[0002] Telescopic poles are needed in various situations, such as in the frame structure of a car-side tent (standing feet, etc.). The telescopic feature optimizes the storage process and also makes it possible to increase the size of the car-side tent during use.

[0003] A typical telescopic pole usually consists of several main parts: the pole body, the telescopic mechanism, and the locking device. The pole body is a tubular or rod-shaped material that forms the main body of the telescopic pole. The telescopic mechanism allows the pole body to extend or shorten; common telescopic methods include helical and sleeve types. The locking device is used to fix the pole body at a specific length, preventing accidental extension or retraction during use. Through these structures, the telescopic pole can be flexibly adjusted in length to adapt to different usage needs.

[0004] Normally, the extension length of the rope in a telescopic pole is fixed, thus providing relatively stable structural strength. However, the structure of infinitely adjustable ropes is more complex, and the implementation of such structures is also more complex, which makes them less suitable for widespread adoption. Utility Model Content

[0005] The main purpose of this utility model is to provide a telescopic rod fixing structure and a telescopic rod, aiming to solve the problem that the rope extension length of the telescopic rod is fixed, thus providing a more stable structural strength, while the infinitely adjustable length structure is more complicated, and the implementation structure is also more complicated, which is not conducive to its popularization.

[0006] To achieve the above objectives, this utility model provides a telescopic rod fixing structure for connecting a large-diameter large sleeve rod and a small-diameter small sleeve rod, comprising:

[0007] A cylindrical small column, comprising interconnected small-diameter segments and large-diameter segments along its length, and having a first through hole eccentric to the central axis of the small column along its length;

[0008] A cylindrical column has a second through hole eccentric to the central axis of the column along its length.

[0009] A bolt assembly, including a bolt and a nut, the bolt assembly passing through a first through hole and a second through hole and connected to the nut to secure the small column and the large column in the longitudinal direction.

[0010] Furthermore, the telescopic rod fixing structure also includes a fixing bolt, which passes through the external small sleeve rod and connects to the small diameter section.

[0011] Furthermore, a first fixing channel is radially penetrating the middle of the bolt along its length, and a second fixing channel is provided on the small column corresponding to the first fixing channel. A spring pin is provided corresponding to the first fixing channel and the second fixing channel, and both ends of the spring pin along its length pass through the peripheral wall of the external small sleeve rod.

[0012] Furthermore, a first chamfer is provided on the circumferential direction of the end of the small column away from the length direction of the large column, and a second chamfer is provided on the circumferential direction of the end of the small column away from the length direction of the large column.

[0013] Furthermore, a first anti-slip surface is provided on the outer peripheral wall of the small-diameter section, and a second anti-slip surface is provided on the outer peripheral wall of the large column.

[0014] Furthermore, the first anti-slip surface includes a plurality of first protruding ridges extending along the length direction of the small column and spaced apart in the circumferential direction, and the second anti-slip surface includes a plurality of second protruding ridges extending along the length direction of the large column and spaced apart in the circumferential direction.

[0015] Furthermore, the bolt assembly also includes a first washer corresponding to the nut and a second washer corresponding to the head of the bolt.

[0016] Furthermore, the large column and the small column are made of polymer material.

[0017] This utility model also provides a telescopic rod, including a large-diameter large sleeve rod, a small-diameter small sleeve rod, and the above-mentioned telescopic rod fixing structure, wherein the small column is connected to the small sleeve rod, and the large column is connected to the large sleeve rod.

[0018] Furthermore, a first fixing channel is radially penetrating the middle of the bolt along its length, a second fixing channel is provided on the small column corresponding to the first fixing channel, a spring pin is provided corresponding to the first fixing channel and the second fixing channel, two through holes are provided on the peripheral wall of the small sleeve rod corresponding to the two ends of the spring pin along its length, and an annular groove corresponding to the spring pin is provided on the inner wall of the large sleeve rod.

[0019] The telescopic rod fixing structure and telescopic rod provided by this utility model have a small diameter section of the small column extending into the small sleeve rod for fixation, and a large diameter section being secured outside the small sleeve rod, thus ensuring good fixation of the small column. The bolt assembly passes through the small column and the large column to complete the fixation. The friction generated between the large diameter section and the large sleeve rod prevents the large sleeve rod from easily falling off the small sleeve rod. During the rotation of the small sleeve rod, since both the first and second through holes are eccentric, the rotation between the small column and the large column causes the large column to be misaligned with the small column, allowing the large column to form frictional fixation with the inner wall of the large sleeve rod. Ultimately, the small sleeve rod and the large sleeve rod can be fixed in any suitable position. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the small column component in the telescopic rod fixing structure of the first embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the large column component in the telescopic rod fixing structure of the first embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram of the bolt assembly in the telescopic rod fixing structure of the first embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the use of the telescopic rod fixing structure of the first embodiment of this utility model (cross-sectional view in non-locking state);

[0024] Figure 5 This is a schematic diagram of the telescopic rod fixing structure of the first embodiment of this utility model (in a non-locking state);

[0025] Figure 6 This is a schematic diagram of the use of the telescopic rod fixing structure of the first embodiment of this utility model (sectional view in locked state);

[0026] Figure 7 This is a schematic diagram (locked state) of the telescopic rod fixing structure of the first embodiment of this utility model;

[0027] Figure 8 This is a schematic diagram of the use of the telescopic rod fixing structure according to the second embodiment of this utility model (sectional view in non-locking state);

[0028] Figure 9 yes Figure 8 A magnified view of a portion of the image;

[0029] Figure 10 This is a schematic diagram of the bolt assembly in the telescopic rod fixing structure of the second embodiment of this utility model.

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0032] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” “the,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0033] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0034] Reference Figures 1 to 10 In one embodiment of this utility model, a telescopic rod fixing structure is provided for connecting a large-diameter large sleeve rod 020 and a small-diameter small sleeve rod 010, comprising:

[0035] A cylindrical small column 100 includes a small diameter segment 110 and a large diameter segment 120 connected to each other in the length direction. A first through hole 130 eccentric to the central axis of the small column 100 is passed through the small column 100 in the length direction.

[0036] A cylindrical column 200 has a second through hole 210 eccentric to the central axis of the column 200 extending along its length.

[0037] Bolt assembly 300 includes bolt 310 and nut 320, the bolt assembly 300 passing through the first through hole 130 and the second through hole 210 and connected to the nut 320 to fix the small column 100 and the large column 200 in the length direction.

[0038] In existing technologies, the rope extension length of telescopic poles is fixed, thus providing relatively stable structural strength. However, the structure of infinitely adjustable length is more complex, and its implementation is also more complex, which is not conducive to its widespread adoption.

[0039] The telescopic rod fixing structure provided by this utility model is used to connect a large-diameter large sleeve rod 020 and a small-diameter small sleeve rod 010. It includes a cylindrical small column 100, which comprises a small-diameter segment 110 and a large-diameter segment 120 connected to each other along its length. During installation, the small-diameter segment 110 of the small column 100 extends into the small sleeve rod 010 for fixation, while the large-diameter segment 120 is secured to the outside of the small sleeve rod 010. A first through hole 130, eccentric to the central axis of the small column 100, is provided along its length.

[0040] A cylindrical column 200 has a second through hole 210 eccentric to its central axis extending along its length. During installation, the column 200 is located inside the large sleeve rod 020.

[0041] The bolt assembly 300 includes a bolt 310 and a nut 320. The bolt assembly 300 passes through the first through hole 130 and the second through hole 210 and is connected to the nut 320 to fix the small column 100 and the large column 200. Although the small column 100 and the large column 200 are fixed in the length direction, they are movable in the circumferential direction and can rotate relative to each other in the circumferential direction.

[0042] During installation, the small-diameter section 110 of the small column 100 extends into the small sleeve rod 010 for fixation, while the large-diameter section 120 is secured to the outside of the small sleeve rod 010. Preferably, the outer diameter of the large-diameter section 120 is the same as or even exceeds the inner diameter of the large sleeve rod 020, creating friction that prevents the large sleeve rod 020 from easily detaching from the small sleeve rod 010. When the small sleeve rod 010 is rotated, since both the first through hole 130 and the second through hole 210 are eccentric, the rotation between the small column 100 and the large column 200 causes misalignment between them, allowing the large column 200 to frictionally fix itself against the inner wall of the large sleeve rod 020.

[0043] In summary, the small diameter section 110 of the small column 100 extends into the small sleeve rod 010 for fixation, while the large diameter section 120 is secured to the outside of the small sleeve rod 010, thus ensuring a good fixation for the small column 100. The bolt assembly 300 passes through the small column 100 and the large column 200 to complete the fixation. The friction between the large diameter section 120 and the large sleeve rod 020 prevents the large sleeve rod 020 from easily falling off the small sleeve rod 010. During the rotation of the small sleeve rod 010, since both the first through hole 130 and the second through hole 210 are eccentric, the rotation between the small column 100 and the large column 200 causes the large column 200 to be misaligned with the small column 100. The large column 200 can then form a frictional fixation with the inner wall of the large sleeve rod 020. Ultimately, the small sleeve rod 010 and the large sleeve rod 020 can be fixed in any suitable position.

[0044] In one embodiment, the telescopic rod fixing structure further includes a fixing bolt that passes through the external small sleeve rod 010 and connects to the small diameter section 110.

[0045] In this embodiment, the introduction of a fixing bolt makes the fixation of the small column 100 on the small sleeve rod 010 more stable. The fixing bolt can be a screw, which passes through the wall structure of the small sleeve rod 010 and connects with the threaded hole provided on the small diameter section 110. At this time, the small column 100 can be firmly fixed on the small sleeve rod 010.

[0046] Reference Figures 8 to 10 In one embodiment, the bolt 310 has a first fixing channel 311 extending radially through the middle of its length direction. The small column 100 has a second fixing channel corresponding to the first fixing channel 311. A spring pin 400 is provided corresponding to the first fixing channel 311 and the second fixing channel. The two ends of the spring pin 400 extend through the peripheral wall of the small sleeve rod 010.

[0047] In this embodiment, the addition of the spring pin 400 has three functions. First, the spring pin 400 can restrict and fix the bolt assembly 300. Second, the spring pin 400 can also help fix the small column 100 to the small sleeve rod 010. Finally, a slot structure is provided at the corresponding position on the inner wall of the large sleeve rod 020, so that the spring pin 400 can be fixed with the slot, thereby realizing the limit position limitation of the small sleeve rod 010 and the large sleeve rod 020.

[0048] In one embodiment, the small column 100 has a first chamfer on the circumferential direction at the end away from the length direction of the large column 200 along its length, and a second chamfer on the circumferential direction at the end away from the length direction of the large column 200 along its length.

[0049] In this embodiment, by providing a first chamfer at the corresponding position of the small column 100, the process of installing the small column 100 into the small sleeve rod 010 is facilitated. The size and type of the first chamfer can be designed and adjusted according to actual usage. Similarly, by providing a second chamfer at the corresponding position of the large column 200, the process of installing the large column 200 into the large sleeve rod 020 is facilitated. The size and type of the second chamfer can be designed and adjusted according to actual usage.

[0050] In one embodiment, a first anti-slip surface is provided on the outer peripheral wall of the small diameter segment 110, and a second anti-slip surface is provided on the outer peripheral wall of the large column 200.

[0051] In this embodiment, the first anti-slip surface enables the small-diameter segment 110 of the small column 100 to be firmly fixed on the inner wall of the small sleeve rod 010; the second anti-slip surface enables the large column 200 to be firmly fixed on the inner wall of the large sleeve rod 020. The first and second anti-slip surfaces can be various shapes of protruding or concave stripe structures, protruding point structures, etc., and the size of the protrusions or concavities can be from 0.5 to 2 millimeters.

[0052] In one embodiment, the first anti-slip surface includes a plurality of first protruding ribs extending along the length direction of the small column 100 and spaced apart in the circumferential direction, and the second anti-slip surface includes a plurality of second protruding ribs extending along the length direction of the large column 200 and spaced apart in the circumferential direction.

[0053] In this embodiment, taking the first protruding rib as an example, the arrangement of multiple first protruding ribs can provide a better anti-slip effect, thereby achieving a better fixing effect. Furthermore, the first protruding rib is relatively easy to implement during injection molding, making the demolding process simpler.

[0054] Reference Figures 1 to 3 In one embodiment, the bolt assembly 300 further includes a first washer 330 corresponding to the nut 320 and a second washer 340 corresponding to the head of the bolt 310.

[0055] In this embodiment, the number of washers is increased. Specifically, a first washer 330 is provided at the position of the nut 320, and a second washer 340 is provided at the head of the bolt 310. The first washer 330 and the second washer 340 optimize the fixing effect. The bolt assembly 300 is preferably made of aluminum, which has excellent elasticity, excellent rigidity, small weight, and strong weather resistance.

[0056] In one embodiment, the large column 200 and the small column 100 are made of polymer material.

[0057] In this embodiment, the large column 200 and the small column 100 can be made of materials such as polyethylene, polypropylene, polyvinyl chloride, and polystyrene. Polymer materials are lightweight and provide superior elasticity.

[0058] This utility model also provides a telescopic rod, including a large-diameter large sleeve rod 020, a small-diameter small sleeve rod 010, and the above-mentioned telescopic rod fixing structure. The small column 100 is connected to the small sleeve rod 010, and the large column 200 is connected to the large sleeve rod 020.

[0059] In this embodiment, a telescopic rod with a telescopic rod fixing structure is included, allowing the large sleeve rod 020 and the small sleeve rod 010 to be adjusted to various fixed positions. During installation, the small column 100 is fixed to the small sleeve rod 010, and the large column 200 is installed inside the large sleeve rod 020. A rotational operation secures the large column 200 to the large sleeve rod 020. The specific connection method between the telescopic rod fixing structure and the small sleeve rod 010 and the large sleeve rod 020 is the same as in the aforementioned embodiment and will not be repeated here.

[0060] Reference Figure 8 In one embodiment, the bolt 310 has a first fixing channel 311 extending radially through its middle portion along its length. The small column 100 has a second fixing channel corresponding to the first fixing channel 311. A spring pin 400 is provided corresponding to the first fixing channel 311 and the second fixing channel. The small sleeve rod 010 has two through holes on its peripheral wall, corresponding to the two ends of the spring pin 400 along its length. The large sleeve rod 020 has an annular groove 021 on its inner wall, corresponding to the spring pin 400.

[0061] In this embodiment, the spring pin 400 is located in the first fixed channel 311 and the second fixed channel. Its two ends in the length direction pass through two through holes on the small sleeve rod 010, respectively. When the large sleeve rod 020 slides to the corresponding position, the spring pin 400 can also form a limiting fixation with the slot 021. Adding the spring pin 400 has three functions: first, it can limit and fix the bolt assembly 300; second, it can assist in fixing the small column 100 to the small sleeve rod 010; and finally, a slot structure is provided at the corresponding position on the inner wall of the large sleeve rod 020, so that the spring pin 400 can be fixed with the slot 021, thereby limiting the extreme positions of the small sleeve rod 010 and the large sleeve rod 020.

[0062] In summary, the telescopic rod fixing structure and telescopic rod provided by this utility model have the following characteristics: the small diameter section 110 of the small column 100 extends into the small sleeve rod 010 for fixation, and the large diameter section 120 is secured outside the small sleeve rod 010, thus ensuring good fixation of the small column 100; the bolt assembly 300 passes through the small column 100 and the large column 200 to complete the fixation; the friction generated between the large diameter section 120 and the large sleeve rod 020 causes the large sleeve rod 020 to be secured to the small sleeve rod. 010 will not easily fall off; and when the small sleeve rod 010 is rotated, since the first through hole 130 and the second through hole 210 are both eccentric, the rotation between the small column 100 and the large column 200 causes the large column 200 to be misaligned with the small column 100, and the large column 200 can then form friction fixation with the inner wall of the large sleeve rod 020. Finally, the small sleeve rod 010 and the large sleeve rod 020 can be fixed in any suitable position.

[0063] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A telescopic rod fixing structure for connecting a large-diameter large sleeve rod (020) and a small-diameter small sleeve rod (010), characterized in that, include: A cylindrical small column (100) includes a small diameter segment (110) and a large diameter segment (120) connected to each other in the length direction. A first through hole (130) eccentric to the central axis of the small column (100) is passed through the small column (100) in the length direction. A cylindrical column (200) has a second through hole (210) eccentric to the central axis of the column (200) extending along its length. A bolt assembly (300) includes a bolt (310) and a nut (320), the bolt assembly (300) passing through the first through hole (130) and the second through hole (210) and being connected to the nut (320) to fix the small column (100) and the large column (200) in the longitudinal direction.

2. The telescopic rod fixing structure according to claim 1, characterized in that, The telescopic rod fixing structure also includes a fixing bolt, which passes through the outer small sleeve rod (010) and connects to the small diameter section (110).

3. The telescopic rod fixing structure according to claim 1, characterized in that, The bolt (310) has a first fixing channel (311) that passes through the center of its length in the radial direction. The small column (100) has a second fixing channel corresponding to the first fixing channel (311). A spring pin (400) is provided corresponding to the first fixing channel (311) and the second fixing channel. The two ends of the spring pin (400) pass through the peripheral wall of the small sleeve rod (010) in the length direction.

4. The telescopic rod fixing structure according to any one of claims 1 to 3, characterized in that, The small column (100) has a first chamfer on the circumferential direction at the end away from the length direction of the large column (200) along its length, and a second chamfer on the circumferential direction at the end away from the length direction of the large column (200) along its length.

5. The telescopic rod fixing structure according to any one of claims 1 to 3, characterized in that, A first anti-slip surface is provided on the outer peripheral wall of the small diameter segment (110), and a second anti-slip surface is provided on the outer peripheral wall of the large column (200).

6. The telescopic rod fixing structure according to claim 5, characterized in that, The first anti-slip surface includes a plurality of first protruding ribs extending along the length direction of the small column (100) and spaced apart in the circumferential direction, and the second anti-slip surface includes a plurality of second protruding ribs extending along the length direction of the large column (200) and spaced apart in the circumferential direction.

7. The telescopic rod fixing structure according to any one of claims 1 to 3, characterized in that, The bolt assembly (300) further includes a first washer (330) corresponding to the nut (320) and a second washer (340) corresponding to the head of the bolt (310).

8. The telescopic rod fixing structure according to any one of claims 1 to 3, characterized in that, The large column (200) and the small column (100) are made of polymer material.

9. A telescopic pole, characterized in that, It includes a large-diameter large sleeve rod (020), a small-diameter small sleeve rod (010), and a telescopic rod fixing structure as described in any one of claims 1 to 8, wherein the small column (100) is connected to the small sleeve rod (010), and the large column (200) is connected to the large sleeve rod (020).

10. The telescopic rod according to claim 9, characterized in that, The bolt (310) has a first fixing channel (311) that passes through the center of its length in the radial direction. The small column (100) has a second fixing channel corresponding to the first fixing channel (311). A spring pin (400) is provided corresponding to the first fixing channel (311) and the second fixing channel. The small sleeve rod (010) has two through holes on its peripheral wall that correspond to the two ends of the spring pin (400) in the length direction. The large sleeve rod (020) has an annular groove (021) on its inner wall that corresponds to the spring pin (400).

Images