High-strength super-toughness plastic pull rod

By introducing a limiting ring, ball bearings, and limiting post into the suitcase design, the problem of jamming caused by friction and stickiness in the suitcase is solved, achieving an efficient and stable user experience, and facilitating maintenance and cleaning.

CN223715204UActive Publication Date: 2025-12-26WENZHOU ZHONGSHENG LUGGAGE ACCESSORIES CO LTD
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Patent Information

Application Number
CN202520473435.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-18
Publication Date
2025-12-26
Estimated Expiration
2035-03-18

AI Technical Summary

Technical Problem

Over time, friction and stickiness develop between the main handle sleeve and the sliding handle of existing suitcases, leading to reduced handle efficiency and jamming.

Method used

The high-strength, ultra-tough plastic pull rod design incorporates a limiting ring, ball bearings, and limiting post within the fixed sleeve to ensure smooth sliding of the moving rod, prevent jamming, and facilitate maintenance and cleaning.

Benefits of technology

It improves the efficiency of the pull rod, prevents jamming, enhances the stability of the moving rod, and facilitates maintenance and replacement.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223715204U_ABST
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Abstract

The utility model discloses a high-strength super-toughness plastic pull rod, relates to the technical field of plastic pull rods, and solves the problems that when a draw-bar box is used for a long time, friction can be generated between a main rod sleeve and a sliding rod, and when the draw-bar box is not used for a long time, viscosity can be generated between measurement ratios between the main rod sleeve and the sliding rod, so that the follow-up use of a shaft is influenced, and the service life of the draw-bar box is prolonged. The pull rod comprises fixed sleeves and a movable rod, the number of the fixed sleeves is two, movable grooves are formed in the fixed sleeves, limiting rings are arranged on the top surfaces of the fixed sleeves, and fixing bolts are symmetrically connected to the interiors of the two ends of the limiting rings in a threaded mode. And through arrangement of balls, a first arc-shaped groove and a second arc-shaped groove, when the moving rod moves up and down, the balls move in the first arc-shaped groove and the second arc-shaped groove, the moving rod can slide up and down conveniently, and blockage is prevented when the moving rod moves up and down.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic pull rod, specifically is a kind of high-strength super tough plastic pull rod. BACKGROUND

[0002] High-strength super tough plastic pull rod is a pull rod for luggage, which can push and lift the luggage by hand, making it more convenient to carry the luggage outside.

[0003] According to the search, the patent with patent publication number CN221577065U discloses a luggage pull rod, relating to the technical field of luggage pull rod, comprising a main rod sleeve and a sliding rod, the inner wall of the main rod sleeve is slidably connected with the surface of the sliding rod, the side surface of the main rod sleeve is fixedly connected with a connecting rod, a height changing and fixing mechanism is arranged in the sliding rod, which is used to change the length of the pull rod and fix the length of the pull rod, an unlocking mechanism is arranged in the sliding rod, which is used to make the fixed sliding rod movable, and an angle deflection mechanism is also included, which is arranged on the connecting rod to change the angle between the pull rod and the luggage, solving the problem that most existing pull rods for luggage are fixed by buckle connection, which makes the luggage pull rod only adjustable and fixed at certain fixed lengths, and the adjustment range is very limited, which is not conducive to the adjustment of the optimal use length by different users, and affects the comfort of use.

[0004] However, the pull rod box will generate friction between the main rod sleeve and the sliding rod during long-term use, and the main rod sleeve and the sliding rod will generate stickiness between the measuring ratio during long-term non-use, which will cause the stretching of the main rod sleeve to appear the phenomenon of jamming during subsequent use, and reduce the use efficiency of the pull rod. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a high-strength super tough plastic pull rod, which solves the problem that the main rod sleeve and the sliding rod will generate friction between them during long-term use of the pull rod box, and the main rod sleeve and the sliding rod will generate stickiness between the measuring ratio during long-term non-use, which will cause the stretching of the main rod sleeve to appear the phenomenon of jamming during subsequent use, and reduce the use efficiency of the pull rod.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme to realize: a kind of high-strength super tough plastic draw bar, including fixed sleeve and moving rod, the fixed sleeve is provided with two, the inside of fixed sleeve is provided with moving groove, the top surface of fixed sleeve is provided with limit ring, and the inside of both ends of limit ring is symmetrically connected with fixed bolt, and fixed bolt is all connected with the inside of the bottom surface of fixed sleeve by penetrating the inside of limit ring, the size of the opening of the through-hole in limit ring and moving groove is matched, the inside of both sides of the sidewall of limit ring is provided with first arc slot, and the inside of both sides of the sidewall in moving groove is provided with second arc slot, and the position of first arc slot and second arc slot is corresponding with each other, and the diameter of first arc slot and second arc slot is equal, the moving rod is U-shaped, and the both sides of the sidewall of moving rod are slidably connected in the inside of moving groove, and the inside of both sides of the sidewall of moving rod is rotatably connected with ball at equal intervals.

[0007] Preferably, the front and rear sides of the moving rod are fixedly installed with limit posts, the inside of the front and rear end sidewalls in the moving groove is provided with a sliding groove, and forms a cross shape with the two sides of the second arc slot, the sliding groove is arc-shaped, and the limit post is cylindrical, the limit post is slidably connected in the inside of the sliding groove, the inside of the front and rear sidewalls of the limit ring is not provided with an opening, and the sidewalls are horizontally opposite to the inside sidewalls of the moving groove, the limit post is arranged at the lower end of the ball, and the distance between the limit post and the bottom ball is greater than the height of the limit ring, so that the limit post on the moving rod can be easily blocked.

[0008] Preferably, the diameter of the ball matches the diameter of the first arc slot, the diameters of the first arc slot and the second arc slot are equal, and the sidewall of the moving rod is matched with the inside sidewall of the moving groove, so as to facilitate the sealing of the moving groove.

[0009] Preferably, the inside of the moving groove is fixedly installed with a limit rod, and the top surface of the limit rod is horizontal with the top surface of the fixed sleeve, the moving rod is slidably sleeved on the limit rod, so as to enhance the stability of the position of the limit rod.

[0010] Preferably, the diameters of the sliding grooves are equal to the diameters of the second arc slots, so as to facilitate the disassembly of the limit ring.

[0011] The utility model provides a kind of high-strength super tough plastic draw bar.It has the following beneficial effects:

[0012] 1. The high-strength super-tough plastic pull rod, when using the high-strength super-tough plastic pull rod, the first arc-shaped groove and the second arc-shaped groove are arranged, so that the moving rod can move up and down, and the ball can move in the first arc-shaped groove and the second arc-shaped groove, so that the moving rod can slide up and down conveniently, and the moving rod can be prevented from being blocked when moving up and down.

[0013] 2. The high-strength super-tough plastic pull rod, when using the high-strength super-tough plastic pull rod, the limiting ring can be disassembled, the position of the moving rod can be taken out, the moving rod can be conveniently maintained and cleaned, and the pulling of the moving rod can be made more smooth. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the moving rod structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the fixed sleeve structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the limiting ring structure of the utility model;

[0018] Figure 5 It is the utility model Figure 3 A part of the utility model is enlarged and schematically shown.

[0019] In the figure, 1 is a fixed sleeve, 2 is a limiting ring, 3 is a fixed bolt, 4 is a moving rod, 5 is a ball, 6 is a limiting column, 7 is a first arc-shaped groove, 8 is a second arc-shaped groove, 9 is a moving groove, 10 is a sliding groove, and 11 is a limiting rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Embodiment 1: Please refer to Figures 1-5The utility model discloses a high strength superplasticity plastic pull rod, including fixed sleeve 1 and moving rod 4, two fixed sleeve 1 are set up, the inside of fixed sleeve 1 is provided with moving groove 9, the top of fixed sleeve 1 is provided with the limiting ring 2, and the both ends inside of limiting ring 2 are all symmetrical screw thread connection has fixed peg 3, and fixed peg 3 all are through the inside screw thread connection in the bottom of fixed sleeve 1 that penetrates limiting ring 2, the size of the opening of limiting ring 2 in through -hole and moving groove 9 is matched, and the both sides of the inside of limiting ring 2 side wall are all provided with first arc -shaped groove 7, and the both sides of the inside of moving groove 9 side wall are all provided with second arc -shaped groove 8, and the position of first arc -shaped groove 7 and second arc -shaped groove 8 correspond with each other, and the diameter of first arc -shaped groove 7 and second arc -shaped groove 8 is equal, moving rod 4 is U-shaped, and the both sides of the rod wall of moving rod 4 are slidably connected in the inside of moving groove 9, and the both sides of the inside of moving rod 4 side wall are all equal interval rotationally connected with the ball 5, and the diameter of ball 5 and the diameter of first arc -shaped groove 7 size is matched, and the diameter of first arc -shaped groove 7 and second arc -shaped groove 8 is equal, and the side wall of moving rod 4 and the inside side wall of moving groove 9 mutually adhere, the inside of moving groove 9 is all fixedly installed with the limiting rod 11, and the top of limiting rod 11 all with the top of fixed sleeve 1 level, and moving rod 4 is slidably sleeved on limiting rod 11 respectively, and the diameter of sliding slot 10 all with the diameter of second arc -shaped groove 8 size is equal, when using pull rod main part, pull up moving rod 4 upwards, moving rod 4 will move up and down in the inside of fixed sleeve 1 at this time, and the ball 5 on moving rod 4 will move in the inside of second arc -shaped groove 8, until moving to the inside of first arc -shaped groove 7, facilitate moving rod 4 to move up and down.

[0022] In order to limit the position of the moving rod 4, in the embodiment, as shown in Figures 2-5As shown, the front and rear sides of the moving rod 4 are fixedly installed with limiting columns 6, the inner sides of the front and rear ends of the moving groove 9 are provided with sliding grooves 10, and the sliding grooves 10 and the second arc-shaped grooves 8 on the two sides form a cross shape, the sliding grooves 10 are arc-shaped, the limiting columns 6 are cylindrical, the limiting columns 6 are respectively slidably connected to the interiors of the sliding grooves 10, the inner sides of the front and rear sides of the limiting ring 2 are not provided with openings, and the opposite sides are horizontally opposite to the inner side walls of the moving groove 9, the limiting columns 6 are arranged at the lower ends of the ball bearings 5, the distance between the limiting columns 6 and the ball bearings 5 at the bottom is greater than the height of the limiting ring 2, when the moving rod 4 needs to move up and down, the limiting columns 6 slide in the sliding grooves 10, when the limiting columns 6 move to the top end of the moving groove 9, the position of the limiting ring 2 can block the position of the limiting column 6, so that the position of the moving rod 4 cannot move to the outside of the fixed sleeve 1, when the moving rod 4 needs to be taken out for cleaning or replacement, the fixed bolt 3 is loosened, the upper end of the moving groove 9 is completely opened, the limiting column 6 can be conveniently moved out of the sliding groove 10, the moving rod 4 can be conveniently taken out, the moving rod 3 can be cleaned and replaced, the limiting ring 2 is rotated until the position of the first arc-shaped groove 7 corresponds to the position of the limiting column 6, and the limiting ring 2 can be conveniently taken out.

[0023] It should be noted that in this embodiment, when the high-strength super-tough plastic pull rod is used, as shown, Figures 1-5 When the pull rod body is used, the moving rod 4 is pulled upward, at this time the moving rod 4 moves up and down in the fixed sleeve 1, and the ball bearings 5 on the moving rod 4 move in the second arc-shaped groove 8 until they move into the first arc-shaped groove 7, so that the moving rod 4 can move up and down, when the moving rod 4 needs to move up and down, the limiting columns 6 slide in the sliding grooves 10, when the limiting columns 6 move to the top end of the moving groove 9, the position of the limiting ring 2 can block the position of the limiting column 6, so that the position of the moving rod 4 cannot move to the outside of the fixed sleeve 1, when the moving rod 4 needs to be taken out for cleaning or replacement, the fixed bolt 3 is loosened, the upper end of the moving groove 9 is completely opened, the limiting column 6 can be conveniently moved out of the sliding groove 10, the moving rod 4 can be conveniently taken out, the moving rod 3 can be cleaned and replaced, the limiting ring 2 is rotated until the position of the first arc-shaped groove 7 corresponds to the position of the limiting column 6, and the limiting ring 2 can be conveniently taken out.

[0024] The basic principle and main features of the present application and the advantages of the present application are shown and described above, for those skilled in the art, obviously the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0025] In addition, it should be understood that, although the present application is described in the form of embodiments, not every embodiment contains only one independent technical solution, the description of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, the technical solutions in each embodiment can also be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A high-strength super-tough plastic pull handle, characterized by: The utility model relates to a fixed sleeve (1) and mobile pole (4) are included, two fixed sleeve (1) are set up, the inside of fixed sleeve (1) is provided with mobile groove (9), the top of fixed sleeve (1) is provided with limit ring (2), and the both ends inside of limit ring (2) are all symmetrically connected with fixed peg (3) with screw thread, and fixed peg (3) all are connected with the inside of fixed sleeve (1) bottom with screw thread through the inside screw thread of limit ring (2) is penetrated, the size of the opening of limit ring (2) in through -hole and mobile groove (9) is matched, the inside both sides wall of limit ring (2) is provided with first arc -shaped groove (7) all, and the inside both sides wall of mobile groove (9) is provided with second arc -shaped groove (8) all, and the position of first arc -shaped groove (7) and second arc -shaped groove (8) correspond with each other, and the diameter of first arc -shaped groove (7) and second arc -shaped groove (8) is equal, mobile pole (4) is U-shaped, and the both sides pole wall of mobile pole (4) is slidably connected in the inside of mobile groove (9) respectively, the both sides wall of mobile pole (4) is rotatably connected with ball (5) all at equal intervals.

2. The high-strength super ductile plastic pull rod according to claim 1, wherein: The front and back of mobile pole (4) are fixedly installed with limit post (6), the inside both ends side wall of mobile groove (9) is provided with sliding slot (10) all, and forms cross shape with both sides second arc -shaped groove (8), sliding slot (10) is arc -shaped, and limit post (6) is cylindrical, limit post (6) is slidably connected in the inside of sliding slot (10) respectively, the inside both sides wall of limit ring (2) is not provided with opening, and the opposite side wall is with the inside side wall of mobile groove (9) mutual horizontal, limit post (6) is set up in the lower end of ball (5), the distance between limit post (6) and bottom ball (5) is greater than the height of limit ring (2).

3. The high-strength super ductile plastic pull rod according to claim 1, wherein: The diameter of ball (5) is matched with the diameter of first arc -shaped groove (7), and the diameter of first arc -shaped groove (7) and second arc -shaped groove (8) is equal, and the side wall of mobile pole (4) is mutually attached with the inside side wall of mobile groove (9).

4. The high-strength super ductile plastic pull rod according to claim 1, wherein: The inside of mobile groove (9) is fixedly installed with limit rod (11) all, and the top of limit rod (11) is horizontal with the top of fixed sleeve (1), mobile pole (4) is slidably sleeved on limit rod (11) respectively.

5. The high-strength super ductile plastic pull rod according to claim 2, wherein: The diameter of sliding slot (10) is equal with the diameter of second arc -shaped groove (8).

Citation Information

Patent Citations

  • Luggage pull rod

    CN221577065U