CN216019658U

CN216019658U - Backpack

Info

Publication number: CN216019658U
Application number: CN202121246750.9U
Authority: CN
Inventors: 谢安; 刘舟; 张晨
Original assignee: Xiaopai Life Shanghai Enterprise Development Co ltd
Current assignee: Xiaopai Life Shanghai Enterprise Development Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-03-15
Anticipated expiration: 2031-06-04

Abstract

The utility model relates to the technical field of backpacks, and provides a backpack which comprises a backpack body, a backboard, an installation plate and a spring plate, wherein a first rack arranged on the installation plate, a second rack arranged on the spring plate, and a gear assembly meshed with the first rack and the second rack simultaneously, the gear assembly is arranged on the backboard, a first rack of a large gear and a coaxially rotating small gear in the gear assembly is arranged on a guide rail of the installation plate, the second rack is arranged on two sides of the spring plate connected with a spring device, the spring plate is meshed with the small gear, the guide rail is meshed with the large gear, and the problem of deformation sensitivity of the spring device is solved by utilizing the transmission ratio of the small gear and the large gear.

Description

Backpack

Technical Field

The utility model relates to the technical field of backpacks, in particular to a backpack.

Background

In daily life, people often use the backpack to carry articles with relatively large weight, so how to reduce the load of users by changing the backpack structure becomes a problem to be solved urgently.

The utility model provides a current schoolbag, the structure divide into the knapsack backplate of following human motion and has inertial knapsack body two parts, when the user walks, because the inertia of knapsack body and the guide rail that sets up between backplate and the body, make to lead to between backplate and the knapsack body and can take place relative slip, be provided with resilient means simultaneously between backplate and knapsack body, resilient means when backplate and body slide each other, carry out human when upwards can and human energy storage when downwards, resilient means's energy storage with can counterbalance with human heavy burden acting of putting away, realize the purpose of subtracting burden.

Based on the above principle, the relative sliding between the back plate and the mounting plate is related to the energy storage and release of the elastic device, the force composition in each direction is complex when the human body moves, the moving frequency and amplitude are variable, and the reciprocating sliding range of the backpack body is limited, so that the problem to be solved is how to store and release the energy for the movement of the human body with different frequencies and amplitudes by making the elastic device more sensitive, and the relative sliding distance of the backpack body is controlled within the limited moving distance by increasing the elastic performance of the spring device, so the stability of the gear assembly is particularly important.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a backpack which comprises a body, a back plate, a mounting plate and a spring plate, wherein a first rack arranged on the mounting plate, a second rack arranged on the spring plate and a gear assembly meshed with the first rack and the second rack simultaneously are arranged on the back plate, the gear assembly is arranged on a guide rail of the mounting plate, a large gear and a first rack of a small gear rotating coaxially are arranged in the gear assembly, the second rack is arranged on two sides of the spring plate fixed with the other end of a spring device, the spring device is meshed with the small gear, the guide rail is meshed with the large gear, the track of the guide rail is larger than the track of the spring device by utilizing the transmission ratio of the small gear and the large gear, and the problem that the sliding range of the spring device is too small is solved.

In some embodiments of the present application, a backpack is disclosed, comprising a backpack body for carrying a load, a back plate in contact with a back of a human body, and a mounting plate in contact with the backpack body, wherein the mounting plate is slidably connected with the back plate; further comprising: a spring plate slidably connected with the back plate; a first rack disposed on the mounting plate; a second rack disposed on the spring plate; the gear assembly, the gear assembly is installed on the backplate, and the gear assembly includes gear wheel and pinion, gear wheel and pinion are coaxial and relative fixed connection, the gear wheel with first rack toothing, the pinion with the second rack toothing.

In some embodiments of the present application, the backpack further comprises a spring device, one end of the spring device is connected to the back plate, and the other end of the spring device is connected to the spring plate.

In some embodiments of the present application, a guide rail is disposed on the mounting plate, the first rack is disposed on one side of the guide rail, and a pulley is further disposed on the back plate and slidably engaged in the guide rail.

In some embodiments of the present application, the gear assembly further comprises: the gear accommodating part is fixedly connected to the back plate, and the large gear and the small gear are arranged in the gear accommodating part.

In some embodiments of the present application, the gear accommodating portion includes a supporting portion, a protecting portion and a mounting portion, and the gear accommodating portion is an integrated structure; the supporting part is used for being fixedly connected with the back plate, and the height of the supporting part is greater than the sum of the heights of the large gear and the small gear; the protection part is of a baffle structure and covers the large gear and the small gear; the installation part penetrates through the axes of the large gear and the small gear and is connected with the back plate.

In some embodiments of the present application, a clamping portion extends from one side of the gearwheel, a clamping groove is arranged on an outer wall of the clamping portion, a through hole is arranged at the center of the pinion, a clamping key is arranged on an inner wall of the through hole, and the clamping groove is in clamping connection with the clamping key

Compared with the prior art, the backpack provided by the embodiment of the utility model has the beneficial effects that:

the mounting plate is provided with the first rack, the spring plate is provided with the second rack, and the second rack is meshed with the gear assembly arranged on the back plate, so that the stability of relative sliding between the back plate and the mounting plate is improved, and the transmission efficiency is ensured; the first rack is arranged on one side of the guide rail, and the second rack is arranged on one side of the spring plate, so that the gear assembly achieves the purpose of driving the spring to store energy and plays a role in driving the relative sliding of the back plate and the mounting plate; the gear assembly is arranged into a structure with two coaxial gears, so that the sliding distance between the guide rail and the spring plate is multiplied by the transmission ratio of the two gears, the deformation sensitivity of the spring device is enhanced, and the transmission and rotation of the two gears are ensured through the connection of the clamping key and the clamping groove; through setting up the gear portion of holding, and utilize the installation department in the gear portion of holding with gear fixed connection on the backplate to utilize protection portion and supporting part to cover the gear alone in solitary space, bump with the gear when avoiding other part transmissions, and increase the stability of gear.

Drawings

FIG. 1 is a block diagram of a backpack in an embodiment of the present invention;

FIG. 2 is a block diagram of a back plate and mounting plate in an embodiment of the utility model;

FIG. 3 is a side view of a back plate and mounting plate in an embodiment of the utility model;

FIG. 4 is a block diagram of a gear assembly and spring plate in an embodiment of the present invention;

FIG. 5 is an exploded view of a gear assembly in an embodiment of the present invention;

FIG. 6 is a block diagram of a gear assembly in an embodiment of the present invention;

in the figure, 100, a backpack body; 200. shoulder straps; 300. a back plate; 310. a gear assembly; 311. A bull gear; 3111. a fastening part; 3112. a clamping groove; 312. a pinion gear; 3121. a card position key; 313. a gear housing portion; 3131. a support portion; 3132. a protection part; 3133. an installation part; 320. a pulley; 400. mounting a plate; 410. a guide rail; 411. a first rack; 420. a spring plate; 421. a second rack; 422. and a spring device.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In some embodiments of the present application, as shown in fig. 1, a backpack is proposed, which includes a backpack body 100 for carrying a load, shoulder straps 200 provided on a back panel 300, and a mounting plate 400 contacting the backpack body 100, wherein the mounting plate 400 is slidably coupled to the back panel 300.

As shown in fig. 2 and 3, the backpack further includes a spring plate 420 slidably connected to the back plate 300, a first rack 411 disposed on the mounting plate 400 and a second rack 421 disposed on the spring plate 420, and a gear assembly 310 disposed on the back plate 300, wherein the gear assembly 310 is engaged with the first rack 411 and the second rack 421, and the back plate 300 and the mounting plate 400 slide relative to each other and the back plate 300 and the spring plate 420 slide relative to each other by relative movement of the gear assembly 310 on the back plate 300 and the first rack 411 and the second rack 421.

It should be noted that, when a person walks, the backpack can move in various directions, such as up, down, left, right, and the like, along with the movement of the shoulders, the back, the buttocks, and the like of the human body, wherein the acceleration force generated by the up-and-down rolling movement when the backpack is started and the movement direction is changed can generate an additional periodic load on the human body in addition to the self weight of the backpack, thereby causing greater compression on the shoulders and the spine of the human body.

In some embodiments of the present application, as shown in fig. 3, the first rack 411 is disposed on the guide rail 410, the guide rail 410 is symmetrically disposed on two sides of the mounting plate 400, the guide rail 410 is a bent structure, and a pair of linear protrusions are oppositely disposed on the inner side of the bend; the first rack 411 is disposed outside the guide rail 410, the back plate 300 is further provided with a fixed pulley 320, the fixed pulley 320 is U-shaped, and the U-shaped pulley 320 is connected with the protrusion inside the guide rail 410 in a matching manner.

It should be noted that, the guide rails 410 are symmetrically arranged on both sides of the mounting plate 400, the acting force between the back plate 300 and the body is averagely divided into two parts to be borne, and other transmission mechanisms such as the spring plate 420 are accommodated between the two guide rails 410, so that the backpack complex force transmission is adapted, the gear assemblies 310 are arranged at both ends, each gear assembly 310 and the pulley 320 jointly complete the sliding between the gear assembly and the sliding rail, the stability of the guide rails 410 is improved, the stability and the low friction of the whole backpack are improved by arranging the guide rails 410 and arranging the pulley 320 and the gear assemblies 310, the load of a user is further reduced, and the user experience is improved.

In some embodiments of the present application, as shown in fig. 4, the second rack 421 is disposed on the spring plate 420 and disposed at both sides of the spring plate 420, wherein the spring plate 420 is disposed at the middle of the mounting plate 400.

Spring plate 420 is provided with spring device 422, wherein one end of spring device 422 is connected to back plate 300, the other end is connected to spring plate 420, and back plate 300 is provided with a hollow portion corresponding to the size of spring plate 420, and spring plate 420 is located in the hollow portion of back plate 300, which is convenient for the installation of the transmission device.

Preferably, two first racks 411 and two second racks 421 are symmetrically disposed, the first rack 411 and the second rack 421 on each side are set as a set of rack assemblies, and each set of rack assemblies is provided with two sets of gear assemblies 310 disposed at two ends of the rack assemblies respectively.

This device makes knapsack body 100 keep static with ground as far as through the mutual transmission between first rack 411, second rack 421 and gear assembly 310, change along with the focus when the human body is walked or is run, the spring of spring assembly 422 is stretched and is contracted, when knapsack body 100 moves for backplate 300, use knapsack body 100 for the downward motion of backplate 300 as an example, knapsack body 100 drives first rack 411 downward motion, first rack 411 meshes with gear assembly 310, drive gear assembly 310 and rotate, specifically, left gear assembly 310 anticlockwise rotates, the gear assembly 310 clockwise on right side rotates, simultaneously, because gear assembly 310 meshes with second rack 421, the gear assembly 310 of left and right sides drives spring board 420 upward movement, the spring extension, do work with knapsack body 100 motion and store. The final effect is that, when backplate 300 moves up and down together with the human body, with the acceleration force when the up-and-down fluctuation of knapsack moves, convert into the deformation power of spring through gear assembly 310 and spring assembly 422, the deformation power of rethread spring maintains knapsack body 100 at the state of static relatively with ground to make the gravity acceleration power of heavy burden knapsack become gently or even eliminate, better protection human vertebra. Because the backpack body 100 is relatively static with the ground, the load is ensured not to move up and down along with the human body, and the inertia force impacts the human body to cause fatigue of the human body.

In some embodiments of the present application, as shown in fig. 5-6, the gear assembly 310 includes a large gear 311, a small gear 312, and a gear receptacle 313.

The large gear 311 is engaged with the first rack 411, the small gear 312 is engaged with the second rack 421, and the axes of the large gear 311 and the small gear 312 are collinear, the large gear 311 and the small gear 312 are fixedly connected, the gear accommodating portion 313 is fixedly connected to the back plate 300, and the large gear 311 and the small gear 312 are disposed inside the gear accommodating portion 313.

It should be noted that, during the process of extending and compressing the spring device, the spring plate slides with the pinion, and the pinion and the bull gear are coaxially fixed, so that the pinion drives the bull gear to rotate at the same angular velocity, and the diameter of the bull gear is larger than that of the pinion, so that the linear velocity of the bull gear is larger than that of the pinion, so that when the bull gear and the pinion rotate at the same angle, the bull gear slides relative to the first rack, and the sliding distance is larger than that of the second rack, and the ratio of the sliding distance of the first rack to the sliding distance of the second rack is the ratio of the diameters of the bull gear and the pinion.

By the transmission process, the sliding distance between the back plate and the mounting plate is increased, and the sliding distance between the back plate and the mounting plate is a multiple of the deformation length of the spring device by changing the diameter size ratio between the large gear and the small gear, so that a lever effect is formed, the movement of a human body and the back plate is amplified in an equal ratio, and the lever effect can be more sensitively reflected on the deformation length of the spring device.

In some embodiments of the present application, a diameter of the large gear 311 is greater than a diameter of the small gear 312, a fastening portion 3111 extends from one side of the large gear 311, the fastening portion 3111 is a column collinear with axes of the large gear 311 and the small gear 312, a position-locking groove 3112 is disposed on an outer wall of the fastening portion 3111, a through hole is disposed at a center of the small gear 312, a diameter of the through hole is equal to a diameter of the fastening portion 3111, a position-locking key 3121 is disposed on an inner wall of the through hole, the position-locking groove 3112 and the position-locking key 3121 are correspondingly disposed, and a relatively fixed connection between the large gear 311 and the small gear 312 is achieved by fastening the position-locking groove 3112 and the position-locking key 3121.

In some embodiments of the present application, the gear receiving portion 313 includes a supporting portion 3131, a protecting portion 3132 and a mounting portion 3133, and the gear receiving portion 313 is an integrated structure.

Wherein the supporting portion 3131 is used for being fixedly connected with the back plate 300, and the height of the supporting portion 3131 is greater than the sum of the heights of the large gear 311 and the small gear 312; the protection part 3132 is a baffle structure covering the large gear 311 and the small gear 312; the mounting portion 3133 is inserted through the axis of the large gear 311 and the axis of the small gear 312 and connected to the back plate 300.

Preferably, the supporting portion 3131 is a pillar located around the edge of the protecting portion 3132, and a through hole is formed in the supporting portion 3131 and penetrates through the through hole, and the supporting portion 3131 is connected to the back plate 300 by a screw, so as to fixedly connect the supporting portion 3131 to the back plate 300.

Preferably, the protection portion 3132 is a barrier with a grid structure, and in order to match the engagement between the pinion 312 and the spring plate 420, a part of the barrier located outside the spring plate 420 is formed along the distribution of the support portion 3131, and another part of the barrier located above the spring plate 420 is formed corresponding to the shape of the gearwheel 311, so as to achieve a special barrier shape in which one part is rectangular and another part is circular, which can not only meet the requirement of the protection portion 3132 on covering the gearwheel 311 and the pinion 312, and achieve stable support, but also avoid crossing with the structure of the spring plate 420, so that the gear accommodating portion 313 achieves protection of the gear, and has high adaptability.

Preferably, the mounting part 3133 extends from the protection part 3132 to one side, is of a pillar structure having a through hole, as in the supporting part 3131, and is fixedly connected to the back plate 300 by a screw engaged with the through hole, the mounting part 3133 is located at an axis of the large and

small gears

311 and 312, and the axis of the large and

small gears

311 and 312 is provided with a through hole for passing through the mounting part 3133, thereby mounting the large and

small gears

311 and 312 on the back plate 300 using the mounting part 3133.

It should be noted that, because the mechanical structure in the backpack is compact, and during the walking process of the user, the sliding, stretching, compressing, rotating and other movements between the components are always generated, so as to ensure that no friction other than the preset occurs between the components, and certain stability is important for the quality of the backpack, it is important for the backpack to use, therefore, a gear accommodating part 313 is provided outside the gear assembly 310, the gear accommodating part 313 covers the large gear 311 and the small gear 312 inside through a supporting part 3131 and a protecting part 3132, and the shape is adaptively changed according to the structure of other components, and the large gear 311 and the small gear 312 are also installed on the back plate 300 through an integrated installation part 3133, which is simple in structure and strong in stability.

To sum up, the embodiment of the utility model provides a backpack, wherein a first rack is arranged on a mounting plate, a second rack is arranged on a spring plate and is meshed with a gear assembly arranged on a back plate, so that the stability of relative sliding between the back plate and the mounting plate is increased, and the transmission efficiency is ensured; the first rack is arranged on one side of the guide rail, and the second rack is arranged on one side of the spring plate, so that the gear assembly achieves the purpose of driving the spring to store energy and plays a role in driving the relative sliding of the back plate and the mounting plate; the gear assembly is arranged into a structure with two coaxial gears, so that the sliding distance between the guide rail and the spring plate is multiplied by the transmission ratio of the two gears, the deformation sensitivity of the spring device is increased, and the transmission and rotation of the two gears are ensured through the connection of the clamping key and the clamping groove; through setting up the gear portion of holding, and utilize the installation department in the gear portion of holding with gear fixed connection on the backplate to utilize protection portion and supporting part to cover the gear alone in solitary space, bump with the gear when avoiding other part transmissions, and increase the stability of gear.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A backpack comprising a backpack body for carrying a load, a back plate in contact with the back of a human body and a mounting plate in contact with the backpack body, wherein the mounting plate is slidably connected with the back plate;

it is characterized by also comprising:

a spring plate slidably connected with the back plate;

a first rack disposed on the mounting plate;

a second rack disposed on the spring plate;

the gear assembly, the gear assembly is installed on the backplate, and the gear assembly includes gear wheel and pinion, gear wheel and pinion are coaxial and relative fixed connection, the gear wheel with first rack toothing, the pinion with the second rack toothing.

2. The backpack of claim 1, further comprising a spring assembly, one end of said spring assembly being attached to said back panel and the other end of said spring assembly being attached to said spring panel.

3. The backpack of claim 1, wherein the mounting plate has a rail disposed thereon, the rail having the first rack disposed on one side thereof.

4. The backpack of claim 1, wherein the gear assembly further comprises:

the gear accommodating part is fixedly connected to the back plate, and the large gear and the small gear are arranged in the gear accommodating part.

5. The backpack of claim 4, wherein the gear receiving portion comprises a support portion, a protection portion and a mounting portion, and the gear receiving portion is an integrated structure;

the supporting part is used for being fixedly connected with the back plate, and the height of the supporting part is greater than the sum of the heights of the large gear and the small gear;

the protection part is of a baffle structure and covers the large gear and the small gear;

the installation part penetrates through the axes of the large gear and the small gear and is connected with the back plate.

6. The backpack as claimed in claim 5, wherein a fastening portion is extended from one side of the large gear, a locking groove is formed on an outer wall of the fastening portion, a through hole is formed at a center of the small gear, a locking key is formed on an inner wall of the through hole, and the locking groove is connected with the locking key in a locking manner.