Luggage case pull rod with synchronous telescopic function

Abstract

The utility model discloses a luggage case pull rod with a synchronous telescopic function. The luggage case pull rod comprises a fixed rod, a movable rod I, a movable rod II, a movable rod III, a positioning structure, a cross rod and a control structure, a first movable rod is arranged at the top of the fixed rod, a second movable rod is arranged at the top of the first movable rod, a third movable rod is arranged at the top of the second movable rod, the positioning structure is arranged at the top of the fixed rod, the transverse rod is arranged at the top of the third movable rod, and the control structure is arranged in the transverse rod. Compared with the prior art, the pull rod has the advantages that zero looseness is ensured through the inclined plane design of the V-shaped guide block and the guide inclined plane, the pull rod is matched with linkage use of a steel wire rope, stress points are dispersed, single-side clamping is avoided, synchronism can still be kept in the corrosion environment, the function of synchronous stretching and retracting of the two sides of the pull rod is achieved, and the service life of the pull rod is prolonged. And the problem that the telescopic heights of the pull rods on the two sides are inconsistent due to the fact that a single-side spring bead loses efficacy easily caused by abrasion and dust of a traditional pull rod is solved.

Description

Technical Field

[0001] This utility model relates to the field of luggage handle technology, specifically a luggage handle with synchronous telescopic function. Background Technology

[0002] A suitcase, also known as a travel case or rolling suitcase, is a box carried when traveling to store belongings. It is a type of luggage and includes a box body, wheels, and a pull handle. The pull handle consists of a fixed handle and a movable handle. The fixed handle is connected to the box body, while the movable handle works in conjunction with the fixed handle, allowing the movable handle to be pulled out or extended into the fixed handle. Suitcases are typically used to store clothing, personal care items, and souvenirs needed for travel.

[0003] Most existing luggage handles extend using a telescopic sliding mechanism. Traditional handles rely on a single-sided spring bead or buckle for locking, which can easily lead to one-sided failure due to wear and dust. Over time, the luggage handle will wear down. If the spring bead on one side is stuck by dust or foreign objects, or if the spring fails, the frictional resistance on that side will increase, causing the extension to lag behind the other side, or even preventing one side from extending or retracting. This results in inconsistent extension heights on both sides, causing tilting or even damage to the track, leading to wobbling and further damage. This affects usability, manifesting as inconsistent heights on both sides, resulting in lower quality and inconvenience when traveling.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned defects and provide a luggage handle with synchronous telescopic function.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a suitcase pull rod with synchronous telescopic function, including a fixed rod, a movable rod one at the top of the fixed rod, a movable rod two at the top of the movable rod one, and a movable rod three at the top of the movable rod two, characterized in that: it further includes:

[0007] A positioning structure is provided at the top of a fixed rod. The positioning structure includes a positioning sleeve, a connector at the bottom of the positioning sleeve, a groove at one end of the connector, rectangular sliding grooves at both ends of the connector, a geometric frame slidably connected inside the rectangular sliding groove, guide posts fixedly connected at the lower ends of both ends of the inner wall of the geometric frame, and guide inclined grooves at both ends of the outer wall of the positioning block. The guide posts are slidably connected inside the guide inclined grooves, and the positioning block is slidably connected inside the groove.

[0008] A crossbar is located at the top of the movable rod three. The crossbar includes a bottom cover, and a top cover is provided on the top of the bottom cover.

[0009] The control structure is located inside the crossbar and includes a button slidably connected to the bottom of the bottom cover. V-shaped guide blocks are fixedly connected to the top two ends of the inner wall of the button. Moving rods are provided at both ends of the inner wall of the crossbar. A U-shaped block is provided at the opposite end of the moving rod. Guide slopes are provided at the bottom of both ends of the U-shaped block. The guide slopes cooperate with the V-shaped guide blocks. A spring is fixedly connected between the middle of the inner wall of the button and the top cover.

[0010] Furthermore, the top of the fixed rod, movable rod one, and movable rod two are all provided with positioning sleeves.

[0011] Furthermore, the rectangular groove is connected to the interior of the first groove. A positioning hole is provided at one end of the inner wall of the first groove. A second groove is provided at the bottom of the first positioning block. A positioning rod is inserted through one end of the inner wall of the second groove. The positioning rod is slidably connected in the positioning hole. A pressure plate is fixedly connected to one end of the positioning rod located inside the second groove. A spring is fixedly connected between the inner wall of the first groove and the first positioning block. A spring is fixedly connected between the pressure plate and the inner wall of the second groove. The spring is sleeved outside the positioning rod. The spring is sleeved outside one end of the positioning rod.

[0012] Furthermore, steel wire ropes are inserted at both ends of the bottom cover, and limiting blocks are provided at both ends of the steel wire ropes. One end of the limiting block is located inside one end of the moving rod, and the other end of the limiting block is engaged with a locking block. A geometric frame is provided at the bottom of the locking block. Guide posts are fixedly connected to the lower part of both ends of the inner wall of the geometric frame. A positioning block is provided at the bottom of the geometric frame. Guide grooves are opened at both ends of the outer wall of the positioning block. The guide posts are slidably connected in the guide grooves. A spring is fixedly connected to one end of the outer wall of the positioning block.

[0013] The advantages of this utility model compared with the prior art are as follows: Through the setting of the positioning and control structure, the V-shaped guide block and the inclined surface design of the guide slope ensure zero looseness. With the linkage of the steel wire rope, the stress points are distributed, avoiding one-sided jamming. Synchronization can still be maintained in the rust environment, realizing the synchronous extension and retraction function of both sides of the pull rod. This improves the strength and quality of the pull rod, making it easier to strengthen the pull rod. It solves the problem that traditional pull rods are prone to failure of the spring ball on one side due to wear and dust, resulting in inconsistent extension and retraction heights on both sides of the pull rod. It can avoid the gaps caused by wear that cause the slide rod to wobble and become unstable, without affecting the use of the suitcase. It improves the quality of use, reduces unnecessary losses, and enhances the practicality of the suitcase pull rod. Attached Figure Description

[0014] Figure 1 This is a perspective view of a suitcase handle with synchronous telescopic function according to this utility model.

[0015] Figure 2 This is an exploded structural diagram of a luggage handle with synchronous telescopic function according to this utility model.

[0016] Figure 3 This is a schematic diagram of the positioning structure of a luggage handle with synchronous telescopic function according to this utility model. Figure 1 .

[0017] Figure 4 This is a schematic diagram of the positioning structure of a luggage handle with synchronous telescopic function according to this utility model. Figure 2 .

[0018] Figure 5 This is a schematic diagram of the positioning structure of a luggage handle with synchronous telescopic function according to this utility model. Figure 3 .

[0019] Figure 6 This is a schematic diagram of the positioning structure of a luggage handle with synchronous telescopic function according to this utility model. Figure 4 .

[0020] Figure 7 This is a schematic diagram of the control structure for a luggage handle with synchronous telescopic function according to this utility model. Figure 1 .

[0021] Figure 8 This is a schematic diagram of the control structure for a luggage handle with synchronous telescopic function according to this utility model. Figure 2 .

[0022] Figure 9 This is a cross-sectional view of the control structure of a luggage handle with synchronous telescopic function according to this utility model.

[0023] Figure 10 This utility model relates to a luggage handle with synchronous telescopic function. Figure 7 Enlarged structural diagram at point A in the middle.

[0024] The diagram shows: 1. Fixed rod; 2. Movable rod one; 3. Movable rod two; 4. Movable rod three; 5. Positioning structure; 51. Positioning sleeve; 52. Connector; 53. Rectangular slide; 54. Gripper frame one; 55. Guide post one; 56. Positioning block one; 57. Guide inclined groove one; 58. Positioning rod; 59. Pressure plate; 510. Spring one; 511. Spring two; 6. Crossbar; 61. Bottom cover; 62. Top cover; 7. Control structure; 71. Button; 72. V-shaped guide block; 73. Moving rod; 74. U-shaped block; 75. Guide inclined surface; 76. Spring three; 77. Limiting block; 78. Steel wire rope; 79. Locking block; 710. Gripper frame two; 711. Guide post two; 712. Positioning block two; 713. Guide inclined groove two; 714. Spring four. Detailed Implementation

[0025] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] like Figures 1 to 10 As shown, this embodiment proposes a luggage handle with synchronous telescopic function, including a fixed rod 1, a movable rod 2 at the top of the fixed rod 1, a movable rod 3 at the top of the movable rod 2, a movable rod 4 at the top of the movable rod 3, and a crossbar 6 at the top of the movable rod 4. The crossbar 6 includes a bottom cover 61 and a top cover 62 at the top of the bottom cover 61. The bottom cover 61 and the top cover 62 are connected by bolts, and the movable rod 4 is connected to the bottom cover 61 by bolts.

[0028] The top of the fixed rod 1 is provided with a positioning structure 5, which includes a positioning sleeve 51. The top of the fixed rod 1, the movable rod 1 2, and the movable rod 2 3 are all provided with positioning sleeves 51. The positioning sleeves 51 are connected by snap-fit. The bottom of the positioning sleeves 51 is provided with a connector 52. One end of the connector 52 has a groove 1 at its lower part, and both ends of the connector 52 have rectangular sliding grooves 53. The rectangular sliding grooves 53 are connected to the inside of the groove 1.

[0029] A rectangular slide groove 53 is slidably connected to a geometric frame 54. Guide posts 55 are fixedly connected to the lower part of both ends of the inner wall of the geometric frame 54. A positioning hole is opened at one end of the inner wall of the groove. Guide grooves 57 are opened at both ends of the outer wall of the positioning block 56. The guide posts 55 are slidably connected in the guide grooves 57. The geometric frame 54 drives the guide posts 55 to slide in the guide grooves 57, which in turn drives the positioning block 56 to slide in the groove.

[0030] A positioning block 56 is slidably connected inside the first groove. A second groove is formed at the bottom of the positioning block 56. A positioning rod 58 is inserted through one end of the inner wall of the second groove. A pressure plate 59 is fixedly connected to one end of the positioning rod 58 inside the second groove. A spring 510 is fixedly connected between the inner wall of the first groove and the positioning block 56. The spring 510 is sleeved on the outside of the positioning rod 58. A spring 511 is fixedly connected between the pressure plate 59 and the inner wall of the second groove. The spring 511 is sleeved on the outside of one end of the positioning rod 58. When the positioning block 56 retracts into the first groove, the positioning block 56 squeezes the spring 510, and at the same time, the pressure plate 59 squeezes the spring 511.

[0031] The crossbar 6 has a control structure 7 inside. The control structure 7 includes a button 71 that is slidably connected to the bottom of the bottom cover 61. V-shaped guide blocks 72 are fixedly connected to the top two ends of the inner wall of the button 71. The crossbar 6 has moving rods 73 at both ends inside. A U-shaped block 74 is fixedly connected to the opposite end of the moving rod 73. The bottom of both ends of the U-shaped block 74 has guide slopes 75. The guide slopes 75 cooperate with the V-shaped guide blocks 72. The guide slopes 75 at both ends of the same U-shaped block 74 face the same direction, and the guide slopes 75 of the two U-shaped blocks 74 face opposite directions. The button 71 drives the V-shaped guide blocks 72 to move upward, thereby causing the V-shaped guide blocks 72 and the guide slopes 75 to press against each other, thereby driving the moving rods 73 at both ends to move towards each other.

[0032] A spring 76 is fixedly connected between the top center of the inner wall of button 71 and top cover 62. Steel wire ropes 78 are inserted at both ends of bottom cover 61. The connector 52 at the bottom of the bracket 2 710 is connected to the top of bracket 1 54 by steel wire ropes 78.

[0033] The wire rope 78 is fixedly connected to two limit blocks 77 at both ends. One limit block 77 is located inside one end of the moving rod 73, and the other limit block 77 is engaged with a locking block 79. The two moving rods 73 move towards each other, so that the moving rod 73 pulls the wire rope 78 inside upward through the limit block 77, dispersing the stress points, avoiding jamming on one side, and maintaining synchronization even in a rusty environment.

[0034] The bottom of the locking block 79 is fixedly connected to a geometric frame 710. The lower part of both ends of the inner wall of the geometric frame 710 is fixedly connected to a guide post 711. The bottom of the geometric frame 710 is provided with a positioning block 712. The two ends of the outer wall of the positioning block 712 are provided with guide grooves 713. The guide post 711 is slidably connected in the guide groove 713. One end of the outer wall of the positioning block 712 is fixedly connected to a spring 714. The outer wall of the positioning block 712 is fixedly connected to a limit post. The spring 714 is sleeved on the outside of the limit post. The upward movement of the steel wire rope 78 drives the locking block 79, the geometric frame 710 and the guide post 711 to move upward. The guide post 711 slides upward in the guide groove 713, thereby driving the positioning block 712 to move horizontally, thereby causing the positioning block 712 to retract into the positioning sleeve 51.

[0035] In practical application, this invention is used by first pressing button 71. Button 71 slides within the bottom cover 61, compressing spring 76. Simultaneously, button 71 moves V-shaped guide block 72 upward, causing it to press against guide slope 75. This, in turn, moves the two moving rods 73 towards each other. The moving rods 73, through limit block 77, pull the inner steel wire rope 78 upward, facilitating the distribution of stress points and preventing one-sided jamming. Even in corrosive environments, it maintains its stability. The movement of the bracket 79, the second bracket 710, and the second guide post 711 causes them to move upward. The second guide post 711 slides upward in the second guide groove 713, which in turn causes the second positioning block 712 to move horizontally. This causes the second positioning block 712 to retract into the positioning sleeve 51. At the same time, the second bracket 710 moves upward, which, through the linkage of the wire rope 78, causes the first bracket 54 to move upward. The first bracket 54 causes the first guide post 55 to slide in the first guide groove 57, which in turn causes the first positioning block 56 to retract. The rod retracts into the groove, and then the horizontal bar 6 is pulled to adjust the height according to the needs of different users. After adjustment, the button 71 is released. Under the action of springs 3 76, 4 714, 2 511, and 1 510, positioning blocks 1 56 and 2 712 automatically engage with the corresponding slots, thus fixing movable rods 1 2, 2 3, and 3 4. The V-shaped guide block 72 and the inclined surface of the guide slope 75 ensure zero looseness, realizing the synchronous extension and retraction of both sides of the pull rod, improving the strength and quality of the pull rod, and facilitating the reinforcement of the pull rod. This solves the problem of inconsistent extension and retraction heights on both sides of the pull rod due to wear and dust causing the spring beads on one side to fail. It avoids the instability caused by wear gaps, does not affect the use of the suitcase, improves the quality of use, reduces unnecessary losses, and enhances the practicality of the suitcase pull rod.

[0036] All content not described in detail in this specification is prior art known to those skilled in the art, and the accompanying drawings are structural schematic diagrams used to supplement the text of the specification.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A luggage handle with synchronous telescopic function, comprising a fixed rod (1), a movable rod one (2) at the top of the fixed rod (1), a movable rod two (3) at the top of the movable rod one (2), and a movable rod three (4) at the top of the movable rod two (3), characterized in that: Also includes: Positioning structure (5), the positioning structure (5) is located on the top of the fixed rod (1), the positioning structure (5) includes a positioning sleeve (51), the bottom of the positioning sleeve (51) is provided with a connector (52), a groove is provided at the lower part of one end of the connector (52), a rectangular sliding groove (53) is provided at both ends of the connector (52), a geometric frame (54) is slidably connected inside the rectangular sliding groove (53), a guide post (55) is fixedly connected at the lower part of both ends of the inner wall of the geometric frame (54), a positioning block (56) is slidably connected inside the groove, a guide inclined groove (57) is provided at both ends of the outer wall of the positioning block (56), and the guide post (55) is slidably connected inside the guide inclined groove (57); A crossbar (6) is located at the top of the movable rod three (4). The crossbar (6) includes a bottom cover (61) and a top cover (62) is provided on the top of the bottom cover (61). The control structure (7) is located inside the crossbar (6). The control structure (7) includes a button (71) that is slidably connected to the bottom of the bottom cover (61). V-shaped guide blocks (72) are fixedly connected to the top two ends of the inner wall of the button (71). Moving rods (73) are provided at both ends inside the crossbar (6). A U-shaped block (74) is provided at the opposite end of the moving rod (73). Guide slopes (75) are provided at the bottom of both ends of the U-shaped block (74). The guide slopes (75) cooperate with the V-shaped guide blocks (72). A spring (76) is fixedly connected between the middle of the inner wall of the button (71) and the top cover (62).

2. A suitcase handle with synchronous telescopic function according to claim 1, characterized in that: The top of the fixed rod (1), movable rod one (2), and movable rod two (3) are all provided with positioning sleeves (51).

3. A suitcase handle with synchronous telescopic function according to claim 1, characterized in that: The rectangular groove (53) is connected to the inside of the first groove. A positioning hole is provided at one end of the inner wall of the first groove. A second groove is provided at the bottom of the first positioning block (56). A positioning rod (58) is inserted through one end of the inner wall of the second groove. The positioning rod (58) is slidably connected in the positioning hole. A pressure plate (59) is fixedly connected to one end of the positioning rod (58) inside the second groove. A spring (510) is fixedly connected between the inner wall of the first groove and the first positioning block (56). A spring (511) is fixedly connected between the pressure plate (59) and the inner wall of the second groove. The spring (510) is sleeved on the outside of the positioning rod (58). The spring (511) is sleeved on the outside of one end of the positioning rod (58).

4. A suitcase handle with synchronous telescopic function according to claim 1, characterized in that: Steel wire ropes (78) are inserted at both ends of the bottom cover (61). Limiting blocks (77) are provided at both ends of the steel wire ropes (78). One end of the limiting block (77) is located inside one end of the moving rod (73), and the other end of the limiting block (77) is engaged with a locking block (79). A two-shaped frame (710) is provided at the bottom of the locking block (79). Guide posts (711) are fixedly connected to the lower part of both ends of the inner wall of the two-shaped frame (710). A positioning block (712) is provided at the bottom of the two-shaped frame (710). Guide grooves (713) are opened at both ends of the outer wall of the positioning block (712). The guide posts (711) are slidably connected in the guide grooves (713). A spring (714) is fixedly connected to one end of the outer wall of the positioning block (712).

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