Multi-functional hidden pull rod mechanism

Abstract

The utility model provides a kind of multifunctional hidden pull rod mechanism, it is related to the technical field of luggage parts, including main backboard, lower pull rod support and upper pull rod, the both sides of main backboard are sewn and fixedly connected with lower pull rod support, the upper portion of lower pull rod support is slidably connected with upper pull rod, the inside of main backboard is sewn and fixedly connected with inner bulkhead, the lower portion of main backboard is sewn and fixedly connected with bottom width board, the both sides of the top of bottom width board are sewn and fixedly connected with bottom surrounding bag, the lower end of inner bulkhead and bottom width board are sewn and fixedly connected.The lower pull rod support and main backboard are combined integrally, the side width, front width connection combination of different style backpacks are adapted, the mold development process of different style backpacks is reduced, the versatility of different style backpack structure components is improved, the problem that different style backpack switching production needs to be re-adjusted manufacturing process, compatibility between backpack components is poor, and cross-style production efficiency is low.

Description

Technical Field

[0001] This utility model relates to the field of luggage components technology, and in particular to a multifunctional concealed pull rod mechanism. Background Technology

[0002] Existing multi-functional backpacks not only have a carrying function, but also are equipped with wheels and a pull rod, allowing people to move the backpack on the ground by holding the pull rod and using the pull rod in conjunction with the wheels, reducing physical exertion during backpack movement and improving the user experience.

[0003] Switching between different backpack styles requires readjusting the manufacturing process. Backpack components have poor processing compatibility, resulting in low production efficiency across styles. Furthermore, the middle and end crossbars of the pull handle are rigid fixed structures that protrude from the back of the backpack when carried, creating a large gap between the handle and the back of the user, concentrating pressure and leading to a poor carrying experience. Utility Model Content

[0004] This utility model provides a multifunctional concealed pull rod mechanism. The pull rod bracket and the rear connecting slide provide combined support for the pulleys, eliminating the need for a pulley bracket at the bottom of the backpack, reducing processing steps and the number of parts. After the pull rod bracket and the main back panel are integrated, it can be adapted to the side and front panel connections of different backpack styles, reducing the mold development process for different backpack styles, improving the versatility of structural components for different backpack styles, and eliminating the need to adjust processing steps when changing production between styles, thus shortening production changeover time.

[0005] This utility model provides a multifunctional concealed pull rod mechanism, specifically including: a main back plate, a lower pull rod bracket, and an upper pull rod. The lower pull rod bracket is sewn and fixedly connected to both sides of the main back plate, and the upper pull rod is slidably connected to the upper part of the lower pull rod bracket. An inner bulkhead is sewn and fixedly connected to the inner side of the main back plate, and a bottom panel is sewn and fixedly connected to the lower part of the main back plate. Bottom covers are sewn and fixedly connected to both sides of the top of the bottom panel, and the lower end of the inner bulkhead is sewn and fixedly connected to the bottom panel.

[0006] Furthermore, both sides of the pull rod bracket are fixedly connected with side reinforcing ears, the lower end of the pull rod bracket is fixedly connected with a lower connecting slide tube, the tail of the lower connecting slide tube is slidably connected with a rear connecting slide, and pulleys are slidably connected to the lower end of the pull rod bracket and the tail of the rear connecting slide.

[0007] Furthermore, both sides of the lower connecting slide tube are fixedly connected with side reinforcing ears, and both sides of the tail end of the rear connecting slide are fixedly connected with side reinforcing ears. The side reinforcing ears of the lower pull rod bracket are sewn and fixedly connected to the main back plate. The side reinforcing ears of the lower pull rod bracket are double-fixed to the main back plate by sewing and rivets. The side reinforcing ears of the lower connecting slide tube and the rear connecting slide are double-fixed to the bottom plate by sewing and rivets. The lower pull rod bracket and the main back plate form an integrated connecting base through the side reinforcing ears.

[0008] Furthermore, the side reinforcing ears of the lower connecting slide tube and the rear connecting slide are sewn and fixedly connected to the top of the bottom panel. The bottom cover bag covers the lower connecting slide tube and the rear connecting slide, and the bottom cover bag isolates the items inside the backpack from contacting the lower connecting slide tube and the rear connecting slide. The lower connecting slide tube and the rear connecting slide slide telescopically.

[0009] Furthermore, the upper end of the upper pull rod is rotatably connected to a middle crossbar, and both ends of the middle crossbar are slidably connected to side limiting inserts.

[0010] Furthermore, both ends of the middle crossbar are rotatably connected to an upper pull rod via pins. The side limiting insert and the upper pull rod are slidably connected. The side limiting insert has a built-in elastic retaining strip. A positioning groove is opened at the corresponding position of the upper pull rod. After the side limiting insert slides in, the elastic retaining strip is embedded in the positioning hole to achieve stable locking of the upper pull rod. After the side limiting insert is unlocked and separated from the upper pull rod, the upper pull rod and the middle crossbar are rotatably connected via pins to achieve bending deformation.

[0011] Furthermore, the lower pull rod bracket and the upper pull rod are located inside a closed cavity formed by the main back plate, the inner bulkhead, and the bottom plate. A zipper is provided between the main back plate and the inner bulkhead. After the upper pull rod is retracted, it is completely embedded into the closed cavity formed by the zipper connection between the main back plate and the inner bulkhead, thus achieving the concealment of the upper pull rod.

[0012] This utility model provides a multifunctional concealed pull rod mechanism, which has the following beneficial effects: The pull rod bracket and the rear connecting slide provide combined support for the pulleys, eliminating the need for a pulley bracket at the bottom of the backpack, reducing processing steps, the number of parts, and improving processing efficiency. The lower connecting slide tube and the rear connecting slide can extend and slide according to the backpack's filling level, avoiding the situation where the backpack occupies a lot of space when it is empty.

[0013] After the pull rod bracket and the main back panel are combined into one unit, they can be adapted to the side and front panel connections of different styles of backpacks, reducing the mold development process for different styles of backpacks, improving the versatility of structural components of different styles of backpacks, eliminating the need to adjust the processing process when changing production across styles, further shortening the time for changing production across styles, and improving processing efficiency.

[0014] After the side limiting insert and the upper pull rod are separated, the upper pull rod and the middle crossbar rotate to achieve overall bending deformation. The bent state can better fit the human back, meet the needs of carrying, and improve the user experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0017] In the attached diagram: Figure 1 A schematic diagram of the overall structure of this application is shown; Figure 2 A schematic diagram of a half-section of the inner bulkhead of this application is shown; Figure 3 A schematic diagram of the pull-down rod support structure of this application is shown; Figure 4 A schematic diagram of the upper pull rod of this application is shown; Figure 5 A schematic diagram of the main backplate of this application is shown; Figure 6 This invention presents a structural schematic diagram showing the main backplate and pull rod bracket in their separated states. Figure 7 This diagram shows the structure of the main back panel, side panels, and front panel after they are stitched together. Figure label: 1. Main backplate; 101. Inner bulkhead; 102. Bottom panel; 103. Bottom enclosure bag; 2. Pull-down rod bracket; 201. Side reinforcing lug; 202. Lower connecting slide tube; 203. Rear connecting slide; 204. Pulley; 3. Upper pull rod; 301. Middle crossbar; 302. Side limit insert. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] Example 1: Please refer to Figures 1 to 7 : This utility model proposes a multifunctional concealed pull rod mechanism, including a main back panel 1, a lower pull rod bracket 2, and an upper pull rod 3. The main back panel 1 is a flexible structure that fits the back of the backpack. An inner wall 101 is sewn and fixedly connected to the inner side of the main back panel 1. A bottom panel 102 is sewn and fixedly connected to the lower part of the main back panel 1. The bottom panel 102 is a structure that supports the bottom of the backpack. Bottom pockets 103 are sewn and fixedly connected to both sides of the top of the bottom panel 102. The lower end of the inner wall 101 is sewn and fixedly connected to the bottom panel 102. The lower pull rod bracket 2 is sewn and fixedly connected to both sides of the main back panel 1. Side reinforcing ears 201 are fixedly connected to both sides of the lower pull rod bracket 2. A lower connecting slide is fixedly connected to the lower end of the lower pull rod bracket 2. The lower connecting tube 202 is slidably connected to the tail of the lower connecting tube 202 with a rear connecting slide 203. The lower end of the lower pull rod bracket 2 and the tail end of the rear connecting slide 203 are both slidably connected to pulleys 204. The upper part of the lower pull rod bracket 2 is slidably connected to an upper pull rod 3. The upper end of the upper pull rod 3 is rotatably connected to a middle crossbar 301. The two ends of the middle crossbar 301 are slidably connected to side limiting inserts 302. The lower pull rod bracket 2 and the upper pull rod 3 are located inside the closed cavity formed by the main back plate 1, the inner bulkhead 101 and the bottom plate 102. A zipper is provided between the main back plate 1 and the inner bulkhead 101. After the upper pull rod 3 is retracted, it is completely embedded in the closed cavity formed by the zipper connection between the main back plate 1 and the inner bulkhead 101, thus realizing the concealment of the upper pull rod 3.

[0020] In this embodiment, side reinforcing ears 201 are fixedly connected to both sides of the lower connecting slide tube 202, and side reinforcing ears 201 are fixedly connected to both sides of the tail end of the rear connecting slide 203. The side reinforcing ears 201 of the pull rod bracket 2 are sewn and fixedly connected to the main back panel 1. The side reinforcing ears 201 of the pull rod bracket 2 are double-fixed to the main back panel 1 by sewing and rivets. The pull rod bracket 2 and the main back panel 1 form an integrated connection base through the side reinforcing ears 201. There is no need to adjust the connection structure for the side and front panels of backpacks such as simple commuter bags and multi-pocket outdoor bags, which further improves adaptability and covers mainstream backpack types.

[0021] In this embodiment, the side reinforcing ears 201 of the lower connecting slide tube 202 and the rear connecting slide 203 are sewn and fixedly connected to the top of the bottom plate 102. The side reinforcing ears 201 of the lower connecting slide tube 202 and the rear connecting slide 203 are double-fixed to the bottom plate 102 by sewing and rivets. The bottom cover bag 103 covers the lower connecting slide tube 202 and the rear connecting slide 203. The bottom cover bag 103 isolates the items inside the backpack from contacting the lower connecting slide tube 202 and the rear connecting slide 203. The lower connecting slide tube 202 and the rear connecting slide 203 slide telescopically. When the backpack is empty, it retracts to reduce the overall volume occupied.

[0022] In this embodiment, both ends of the middle crossbar 301 are rotatably connected to the upper pull rod 3 via pins. The side limiting insert 302 is slidably connected to the upper pull rod 3. The side limiting insert 302 has a built-in elastic retaining strip. The upper pull rod 3 has a positioning groove at the corresponding position. After the side limiting insert 302 is slidably inserted, the elastic retaining strip is embedded in the positioning hole to achieve stable locking of the upper pull rod 3. After the side limiting insert 302 is unlocked and separated from the upper pull rod 3, the upper pull rod 3 and the middle crossbar 301 are rotatably connected via pins to achieve bending deformation. After bending, the whole conforms to the curve of the human back, improving ergonomic adaptability.

[0023] In this second embodiment, based on the first embodiment, the pull rod bracket 2 and the rear connecting slide 203 rotate. The maximum rotation angle between the pull rod bracket 2 and the rear connecting slide 203 is a right angle, and the minimum is 0°. This ensures that when not in use, the pull rod bracket 2 and the rear connecting slide 203 rotate in a parallel state, compressing the overall width and avoiding the situation where the pull rod bracket 2 and the rear connecting slide 203 occupy a large space when in an L-shaped state.

[0024] The working principle of this embodiment is as follows: The main back panel 1 and the bottom panel 102 are stitched together to form the side and front panels of the backpack. The back of the main back panel 1 is sewn with a carrying structure to achieve the carrying function. After the upper pull rod 3 is retracted, it is completely embedded in the closed cavity formed by the main back panel 1, the inner wall 101, and the bottom panel 102. The upper pull rod 3 is hidden and does not affect the flat or stacked storage of the backpack. The upper pull rod 3 is pulled by a rope, and the main back panel 1 moves along the ground via the pulley 204. The lower pull rod bracket 2 and the rear connecting slide 203 combine to support the pulley 204, directly replacing the traditional independent pulley bracket. This eliminates the need for separate mold making, positioning, and sewing of the traditional independent pulley bracket, shortens the processing time of a single mechanism, improves processing efficiency, reduces the number of parts, reduces mold investment costs, and adapts to the needs of mass production. The lower connecting slide tube 202 and the rear connecting slide 203 slide telescopically. When the backpack is empty, it retracts, reducing the overall volume occupied. When the backpack is filled, it extends synchronously to ensure that the pulley 204 is stably grounded. The pull rod bracket 2 and the main back panel 1 form an integrated connection base via side reinforcing ears 201. This eliminates the need to adjust the connection structure for the sides and front of backpacks, such as minimalist commuter bags or multi-pocket outdoor bags. Quick assembly is achieved through a combination of sewing and rivets for double fixation, further enhancing adaptability and covering most mainstream backpack types. The universal connection design of the pull rod bracket 2 and the main back panel 1 avoids the need to develop pull rod connection molds for different backpack styles, reducing mold costs. No adjustments to processing procedures are required when changing production styles, resulting in shorter changeover times and improved processing efficiency. The overall production cost of different styles of backpacks is reduced, which solves the problems of needing to readjust the manufacturing process for different styles of backpacks, poor processing compatibility between backpack parts, needing to readjust tooling when changing styles, and low production efficiency across styles. After the side limiting insert 302 is unlocked and separated from the upper pull rod 3, the upper pull rod 3 and the middle crossbar 301 are connected by a pin to achieve bending deformation. After bending, the whole conforms to the curve of the human back, improving ergonomics and solving the problem that the pull rod of the traditional pull rod mechanism is a rigid fixed structure, which protrudes from the back of the backpack when carried, with a large gap between it and the human back, concentrated pressure, and poor carrying experience.

[0025] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only involve structures relevant to the embodiments disclosed herein; other structures may refer to general designs.

[0026] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0027] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A multifunctional concealed pull rod mechanism, comprising: The main back plate (1), the pull rod bracket (2) and the upper pull rod (3) are characterized in that the pull rod bracket (2) is fixedly connected to both sides of the main back plate (1), the upper pull rod (3) is slidably connected to the upper part of the pull rod bracket (2), the side reinforcing ears (201) are fixedly connected to both sides of the pull rod bracket (2), the lower end of the pull rod bracket (2) is fixedly connected to the lower connecting slide tube (202), the tail of the lower connecting slide tube (202) is slidably connected to the rear connecting slide (203), and the lower end of the pull rod bracket (2) and the tail end of the rear connecting slide (203) are slidably connected to the pulley (204).

2. The multifunctional concealed tie rod mechanism according to claim 1, characterized in that, The inner side of the main back panel (1) is fixedly connected to the inner bulkhead (101), the lower part of the main back panel (1) is fixedly connected to the bottom panel (102), the top two sides of the bottom panel (102) are fixedly connected to the bottom surrounding bag (103), and the lower end of the inner bulkhead (101) is fixedly connected to the bottom panel (102).

3. The multifunctional concealed tie rod mechanism according to claim 2, characterized in that, The lower connecting slide tube (202) is fixedly connected to both sides with side reinforcing ears (201), the rear connecting slide (203) is fixedly connected to both sides with side reinforcing ears (201), and the side reinforcing ears (201) of the lower pull rod bracket (2) are fixedly connected to the main back plate (1).

4. The multifunctional concealed tie rod mechanism according to claim 3, characterized in that, The side reinforcing ears (201) of the lower connecting slide tube (202) and the rear connecting slide (203) are both fixedly connected to the top of the bottom plate (102), and the bottom covering bag (103) covers the upper part of the lower connecting slide tube (202) and the rear connecting slide (203).

5. A multifunctional concealed tie rod mechanism according to claim 2, characterized in that, The upper end of the upper pull rod (3) is rotatably connected to the middle crossbar (301), and both ends of the middle crossbar (301) are slidably connected to the side limiting inserts (302).

6. A multifunctional concealed tie rod mechanism according to claim 5, characterized in that, The middle crossbar (301) is connected to an upper pull rod (3) at both ends, and the side limiting insert (302) and the upper pull rod (3) are slidably connected.

7. A multifunctional concealed tie rod mechanism according to claim 6, characterized in that, The lower pull rod bracket (2) and the upper pull rod (3) are located inside the closed cavity formed by the main back plate (1), the inner cabin wall (101) and the bottom plate (102), and a zipper is provided between the main back plate (1) and the inner cabin wall (101).

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