A portable labor-saving backpack

Abstract

The utility model relates to the technical field of backpacks, disclose a portable labor -saving backpack, include: the backpack body, be located the guide rail frame of the backpack body back, the sliding joint has the backplate on the guide rail frame, be equipped with the sponge pad on the backplate, the present application sets up the guide rail frame and the backplate of slidable on the backpack body back, and the support effect of combination sponge pad makes backplate in the process of user walking can produce micro -displacement along with body movement, and by the elastic part of setting up between the guide rail frame and backplate carries out the buffer and the resilience, thereby fundamentally reduced the direct impact of the load on the shoulder and the spine, this is the main labor -saving and comfortable effect.

Description

Technical Field

[0001] This utility model relates to the field of backpack technology, specifically to a portable, labor-saving backpack. Background Technology

[0002] Backpacks are a common everyday carrying tool, widely used by students, office workers, and outdoor enthusiasts. Most standard backpacks rely on two shoulder straps to distribute weight evenly across both shoulders, reducing discomfort from carrying heavy loads on one shoulder. However, when the backpack is heavily loaded or needs to be carried for extended periods, it can still put significant pressure on the shoulders, spine, and lower back, easily leading to fatigue and even chronic strain.

[0003] To improve carrying comfort, some backpacks have added thicker padding to the back panel or shoulder straps, or added auxiliary straps at the waist to distribute pressure. However, these improvements mainly focus on localized cushioning and are unlikely to effectively reduce overall stress during dynamic walking. Especially when going uphill or downhill, walking briskly, or carrying heavy loads for long distances, the impact force generated by the backpack's weight with each step is amplified, and the instantaneous force on the shoulder straps and body remains significant, resulting in limited effort-saving effects. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a portable and labor-saving backpack, which aims to alleviate the above problems to at least some extent.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A portable, labor-saving backpack, comprising:

[0007] Backpack body;

[0008] A guide rail frame is provided on the back of the backpack body, and a back panel is slidably connected to the guide rail frame. A sponge pad is provided on the back panel.

[0009] The back panel has a shoulder strap, the other end of which is connected to the backpack body.

[0010] An elastic portion located between the guide rail and the back panel provides cushioning and rebound force when the back panel is displaced along the guide rail, thereby reducing the impact on the backpack during carrying and walking.

[0011] An adjustment component located between the guide rail frame and the elastic part is used to adjust the preload of the elastic part.

[0012] Preferably, the elastic part is a spring.

[0013] Preferably, a guide rail rod is fixed on the guide rail frame, and a slide bar is connected to the back plate, the slide bar being slidably connected to the guide rail rod.

[0014] Preferably, a sleeve is fixed to the top of the slide bar, a connecting ring is provided at the top of the sleeve, the connecting ring contacts the guide rail frame, a plurality of connecting rods are fixed to the bottom of the connecting ring, the connecting rods extend into the sleeve and are fixed with a collar, a spring a is connected between the collar and the sleeve, the potential energy of the spring a is greater than that of the elastic part, a plurality of connecting openings are provided on the collar, and the sleeve is filled with damping grease.

[0015] Preferably, the adjusting component includes a communication port opened on the side wall of the guide rail frame, a support bar slidably connected in the communication port, one end of the elastic part being fixed to the support bar and the other end being fixed to the slide bar, a connecting rod being connected to the bottom of the support bar, and a crossbeam slidably connected to the communication port being connected to the connecting rod.

[0016] Preferably, a lead screw is rotatably connected to the guide rail frame, and the lead screw is threadedly engaged with the crossbeam.

[0017] Preferably, the lead screw is rotatably connected to the guide rail frame, and the bottom of the lead screw is slidably connected to an adjusting shaft via a keyway and spline. A spring b is connected between the adjusting shaft and the guide rail frame. Multiple positioning shafts are connected to the adjusting shaft, and the guide rail frame has a positioning port adapted to the positioning shaft.

[0018] In summary, the present invention has the following main advantages:

[0019] This invention, by incorporating a guide rail frame and a sliding back panel on the back of the backpack, combined with the support of a sponge pad, allows the back panel to slightly shift with the user's body movements during walking. An elastic component located between the guide rail frame and the back panel provides cushioning and rebound, fundamentally reducing the direct impact of load on the shoulders and spine – this is the primary effect of saving effort and providing comfort. Furthermore, when the back panel rebounds, the connecting ring at the top of the slider contacts and collides with the guide rail frame. Through the combined action of the damping grease within the sleeve and the spring a with greater potential energy, the rebound potential energy is effectively reduced, preventing the back panel from wobbling due to reverse impact, thus improving stability and safety – this is a reinforcement effect on the basic cushioning. In addition, this invention includes an adjustment component on the guide rail frame. Through the cooperation of a lead screw, crossbeam, support bar, and positioning mechanism, the user can flexibly adjust the preload of the elastic component without changing the initial position of the back panel and slider, thus achieving personalized adaptation for different loads and usage needs. Simultaneously, the limiting function of the positioning shaft ensures reliable locking after adjustment, preventing displacement caused by vibration during use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the backpack body structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the guide rail frame structure of this utility model;

[0023] Figure 4 yes Figure 3 Enlarged schematic diagram of the local structure at point A;

[0024] Figure 5 This is a schematic diagram of the crossbeam structure of this utility model;

[0025] Figure 6 This is a cross-sectional schematic diagram of the sleeve structure of this utility model.

[0026] Figure label:

[0027] 100. Backpack body; 101. Guide rails; 102. Back panel; 103. Foam padding; 104. Shoulder straps; 105. Elastic parts;

[0028] 200. Guide rail rod; 201. Slide bar; 202. Sleeve; 203. Connecting ring; 204. Connecting rod; 205. Collar; 206. Spring a; 207. Connecting opening;

[0029] 300. Connecting port; 301. Support bar; 302. Connecting rod; 303. Crossbeam; 304. Lead screw; 305. Adjusting shaft; 306. Spring b; 307. Positioning shaft; 308. Positioning port. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] refer to Figures 1-6 This embodiment provides a portable, labor-saving backpack, including a backpack body 100. The back of the backpack body 100 is provided with a guide rail frame 101, and a back panel 102 is slidably connected to the guide rail frame 101. A sponge pad 103 is fixed on the outer surface of the back panel 102 to conform to the back of the user when carrying it, providing soft support and improving comfort.

[0032] The back panel 102 is equipped with shoulder straps 104, the other end of which is connected to the lower part of the backpack body 100, giving the backpack the basic structure of a traditional double-shoulder carrying backpack. An elastic section 105 is provided between the guide rail frame 101 and the back panel 102. The elastic section 105 deforms when the back panel 102 moves vertically relative to the guide rail frame 101, thereby generating cushioning and rebound force. When the user walks, goes up or down slopes, or moves quickly, the back panel 102 shifts slightly with the body's movements, and the elastic section 105 deforms accordingly, absorbing and dispersing the instantaneous impact from the backpack body 100, effectively reducing the burden on the shoulders and spine.

[0033] An adjustment component is further provided between the guide rail frame 101 and the elastic part 105. The adjustment component is used to change the preload of the elastic part 105, so that the elastic part 105 has different compression amounts in the initial state. By rotating the adjustment component, the preload of the elastic part 105 can be increased or decreased. When the backpack is loaded with a large weight, the adjustment component can preload the elastic part 105 to provide greater support and cushioning when subjected to force; when the backpack is loaded with a small weight, the adjustment component can reduce the preload, so that the back panel 102 maintains a lightweight and smooth elastic response during use.

[0034] In this embodiment, the elastic part 105 is a spring. When the back panel 102 is displaced relative to the guide rail frame 101, the spring is compressed or extended, thereby providing cushioning and rebound force, effectively absorbing the impact force of the backpack during carrying and walking, and reducing the pressure on the shoulders and spine.

[0035] In this embodiment, a guide rail rod 200 is fixed on the guide rail frame 101, and a slider 201 is connected to the back panel 102. The slider 201 slides along the guide rail rod 200, allowing the back panel 102 to move smoothly relative to the backpack body 100 under the guidance of the guide rail rod 200. When the user walks or goes up or down slopes, and the back panel 102 moves slightly with the body's movements, the slider 201 causes the spring to compress or extend. The spring provides cushioning and rebound force during deformation, effectively absorbing the instantaneous impact of the backpack and reducing the burden on the shoulders and spine. Through this structure, a stable sliding guide fit is formed between the back panel 102 and the guide rail frame 101, and combined with the elasticity of the spring, a dynamic cushioning and rebound effect is achieved, thereby improving the comfort and effortlessness when carrying the backpack.

[0036] In this embodiment, a sleeve 202 is fixed to the top of the slide bar 201, and a connecting ring 203 is provided at the top of the sleeve 202. Multiple connecting rods 204 are fixed to the bottom of the connecting ring 203. The connecting rods 204 extend into the sleeve 202 and are fixed with a collar 205. A spring a206 is connected between the collar 205 and the sleeve 202, and the potential energy of the spring a206 is greater than that of the aforementioned elastic part 105. Multiple connecting openings 207 are provided on the collar 205, and the sleeve 202 is filled with damping grease to generate a damping effect during relative structural movement.

[0037] During normal use, the backpack moves up and down with the user's movement, causing the back panel 102 and slide bar 201 to slide back and forth along the guide rail 200. When the back panel 102 moves downward, the elastic part 105 is first compressed to absorb the impact energy generated during the downward movement. Subsequently, as the elastic part 105 releases its potential energy and causes the back panel 102 to rebound upward, the connecting ring 203 above the slide bar 201 contacts and collides with the guide rail frame 101. At this time, the connecting rod 204 drives the collar 205 to move upward and compresses the spring a206. Simultaneously, the damping grease between the collar 205 and the sleeve 202 forms a viscous damping force, thereby buffering the instantaneous impact generated by the rebound. Through the synergistic effect of the spring a206 and the damping grease, the potential energy during the rebound is effectively reduced, preventing the back panel 102 from shaking significantly due to the reverse impact, thus ensuring the stability and comfort of the carrying process.

[0038] In this embodiment, the adjusting component includes a connecting port 300 formed in the side wall of the guide rail frame 101. A support bar 301 is slidably connected within the connecting port 300. One end of the elastic part 105 is fixed to the support bar 301, and the other end is fixed to the slide bar 201. A connecting rod 302 is connected to the bottom of the support bar 301, and a crossbeam 303 that slidably engages with the connecting port 300 is connected to the connecting rod 302.

[0039] During adjustment, the upward movement of the crossbeam 303 causes the support bar 301 to move upward, thereby forcing the elastic part 105 to generate additional compression. If only the elastic part 105 exists in the system at this time, its compression would directly change the relative position of the back plate 102 and the slide bar 201, causing the back plate 102 to move upward as a whole, affecting the user's carrying stability. However, in this embodiment, the potential energy of the spring a206 between the sleeve 202 and the collar 205 is significantly greater than that of the elastic part 105. When the crossbeam 303 moves upward and applies a compressive force to the elastic part 105, the spring a206 can provide a greater reaction force to counteract this displacement tendency, keeping the back plate 102 and the slide bar 201 in their initial positions without movement. Thus, the adjustment action only acts on the elastic part 105 itself, adjusting its preload without changing the working reference position of the back plate 102 and the slide bar 201.

[0040] In this way, additional compression can be applied to the elastic part 105 without changing the working position of the back panel 102 and the slide bar 201, thereby achieving preload adjustment. This structure ensures the relative stability of the back panel 102 when carrying the user, while allowing the user to flexibly change the cushioning intensity according to the actual load.

[0041] In this embodiment, a lead screw 304 is rotatably connected to the guide rail frame 101, and the lead screw 304 and the crossbeam 303 are in a threaded fit relationship.

[0042] In use, the user can rotate the lead screw 304 to drive the threaded crossbeam 303 to move up and down along the communication port 300. When the crossbeam 303 moves upward, the connecting rod 302 and the support bar 301 are pushed upward simultaneously, thereby compressing the elastic part 105 to increase the preload; when the crossbeam 303 moves downward, the position of the support bar 301 drops accordingly, so that the elastic part 105 returns to a smaller preload state.

[0043] In this embodiment, the lead screw 304 is rotatably connected to the guide rail frame 101. The bottom of the lead screw 304 is slidably connected to the adjusting shaft 305 via a keyway and spline. A spring b306 is provided between the adjusting shaft 305 and the guide rail frame 101. Multiple positioning shafts 307 are connected to the outer side of the adjusting shaft 305, and the guide rail frame 101 is provided with corresponding positioning holes 308 adapted to the positioning shafts 307.

[0044] First, when adjustment is needed, the user disengages the positioning shaft 307 on the adjusting shaft 305 from the positioning port 308 on the guide rail 101, thereby releasing the limiting lock and allowing the adjusting shaft 305 to slide freely relative to the guide rail 101. Then, the user rotates the adjusting shaft 305, causing the lead screw 304 to rotate as well.

[0045] The lead screw 304, through its threaded engagement with the crossbeam 303, causes the crossbeam 303 to shift along the guide rail frame 101. When the crossbeam 303 moves upward, the connecting rod 302 and the support bar 301 are pushed, thereby forcing the elastic part 105 to generate additional compression, thus increasing the preload. When the crossbeam 303 moves downward, the support bar 301 descends accordingly, reducing the compression of the elastic part 105, thereby reducing the preload.

[0046] Once the target position is reached, the user releases the adjustment shaft 305. Under the action of the spring b306, the positioning shaft 307 re-enters the positioning port 308 on the guide rail frame 101, thereby locking the adjustment shaft 305 in the current position. Through this process, the preload of the elastic part 105 can be flexibly adjusted and remains stable after adjustment.

[0047] 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 portable, labor-saving backpack, characterized in that, include: Backpack body (100); A guide rail (101) is provided on the back of the backpack body (100), and a back panel (102) is slidably connected to the guide rail (101). A sponge pad (103) is provided on the back panel (102). A shoulder strap (104) is provided on the back panel (102), and the other end of the shoulder strap (104) is connected to the backpack body (100); An elastic part (105) provided between the guide rail frame (101) and the back plate (102) is used to provide buffering and rebound force when the back plate (102) is displaced along the direction of the guide rail frame (101) to reduce the impact of the backpack during carrying and walking. An adjustment component is provided between the guide rail frame (101) and the elastic part (105) for adjusting the preload of the elastic part (105); A guide rail rod (200) is fixed on the guide rail frame (101), and a slide bar (201) is connected to the back plate (102). The slide bar (201) is slidably connected to the guide rail rod (200). The adjusting component includes a communication port (300) opened on the side wall of the guide rail frame (101), a support bar (301) is slidably connected in the communication port (300), one end of the elastic part (105) is fixed to the support bar (301), and the other end is fixed to the slide bar (201). A connecting rod (302) is connected to the bottom of the support bar (301), and a crossbeam (303) slidably connected to the communication port (300) is connected to the connecting rod (302). A lead screw (304) is rotatably connected to the guide rail frame (101), and the lead screw (304) is threadedly engaged with the crossbeam (303).

2. The portable, labor-saving backpack according to claim 1, characterized in that, The elastic part (105) is a spring.

3. A portable, labor-saving backpack according to claim 1, characterized in that, As stated above.

4. A portable, labor-saving backpack according to claim 1, characterized in that, The top of the slide bar (201) is fixed with a sleeve (202), and the top of the sleeve (202) is provided with a connecting ring (203). The connecting ring (203) contacts the guide rail frame (101). The bottom of the connecting ring (203) is fixed with multiple connecting rods (204). The connecting rods (204) extend into the sleeve (202) and are fixed with a collar (205). A spring a (206) is connected between the collar (205) and the sleeve (202). The potential energy of the spring a (206) is greater than that of the elastic part (105). Multiple connection openings (207) are opened on the collar (205). The sleeve (202) is filled with damping grease.

5. A portable, labor-saving backpack according to claim 1, characterized in that, The lead screw (304) is rotatably connected to the guide rail frame (101). The bottom of the lead screw (304) is slidably connected to the adjusting shaft (305) through the keyway and spline. A spring b (306) is connected between the adjusting shaft (305) and the guide rail frame (101). Multiple positioning shafts (307) are connected to the adjusting shaft (305). The guide rail frame (101) is provided with a positioning port (308) that is adapted to the positioning shaft (307).

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