CN216494025U - Be applied to knapsack slip auxiliary system - Google Patents

Abstract

The utility model discloses an auxiliary system applied to backpack sliding, and a burden-reducing backpack comprises: backplate, knapsack board, can make backplate and knapsack board relative movement's transmission system and realize the energy storage equipment who subtracts burden function of burden knapsack still include the slip auxiliary system, the slip auxiliary system respectively with knapsack board and backplate fixed connection, knapsack board and backplate follow the limited cooperation direction relative movement of slip auxiliary system, the slip auxiliary system includes first guide rail and three-dimensional dislocation assembly pulley, the three-dimensional dislocation assembly pulley can slide in the U-shaped inslot of first guide rail, the three-dimensional dislocation assembly pulley comprises the U-shaped pulley of three different installation faces and laminates preceding, back and inboard face in the first guide rail U-shaped inslot respectively, U-shaped inslot medial surface and pulley contact position form protruding little guide rail, the spacing slip of pulley groove block on little guide rail of U-shaped pulley.

Description

Be applied to knapsack slip auxiliary system

Technical Field

The utility model relates to the field of mechanical transmission labor-saving devices, in particular to an auxiliary system applied to backpack sliding.

Background

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

In the prior art, the utility model has a load-reducing backpack form which adopts the matching of gears and springs to carry out transmission load reduction, such as a load-reducing backpack with the patent publication number of CN112806705A, which comprises a back plate, a backpack plate, a transmission system which can enable the back plate and the backpack plate to move relatively and an energy storage device which realizes the load-reducing function of the load-reducing backpack, through the transmission matching between gear racks and racks, the springs of the energy storage device stretch and store energy to realize the load-reducing effect of the backpack, but the backpack and the back plate of the scheme are connected through a guide rail and a movable device which is sleeved on the guide rail, in the practical application of the scheme, because the guide rail and the movable device are in sliding friction, the friction force is large, the guide rail needs to be cleaned and lubricated frequently in the using process to maintain, the use jam of the guide rail is avoided, the subsequent maintenance of the guide rail is complicated, and the guide rail and the movable device can generate noise due to the friction in the sliding process, affecting the user experience.

SUMMERY OF THE UTILITY MODEL

According to the problems, the utility model discloses an auxiliary system applied to backpack sliding, which is used for solving the problems that the friction force caused by the relative movement of a backpack and a back plate is large in the use process of a load-reducing backpack and the noise generated in the load-reducing work process of the load-reducing backpack.

In some embodiments of the utility model, the transmission mode between the backpack plate and the back plate is improved, the sliding auxiliary system is arranged in a pulley guide rail transmission mode, so that friction of relative displacement of the backpack plate and the back plate is reduced, specifically, the first guide rail is fixedly arranged on two sides of the backpack plate, the power rack is arranged on one side surface of the first guide rail, the first pulley block comprises a plurality of pulleys, the rotating shaft center of the first pulley block is fixedly arranged on two sides of the back plate, and the first pulley block is in sliding limit fit with the first guide rail, so that the back plate slides in a limit way relative to the backpack plate along the guide direction of the first guide rail.

The first pulley block is set to be a three-way dislocation wheel, meanwhile, the cross section of the first guide rail is U-shaped, a U-shaped groove is formed inside the first guide rail, a plurality of convex micro guide rails which are the same as the extension direction of the guide rails are respectively arranged on the outer side and the inner side of the first guide rail, the three-way dislocation wheel is arranged in the U-shaped groove and is respectively contacted and limited with three inner walls of the first guide rail which forms the U-shaped groove in three directions, the sliding stability of the first pulley block in the first guide rail is improved, the first pulley block is a three-way dislocation pulley block which is composed of three U-shaped pulleys with axes on different installation surfaces, the three U-shaped pulleys are respectively attached to three wall surfaces in the U-shaped groove, the back plate and the backpack plate slide up and down relatively and are supported by the first pulley block in the first guide rail, and the three pulleys of the first pulley block are sequentially attached to the front, back and inner sides of the guide rails.

In one embodiment of the utility model, the U-shaped channel comprises a first wall, a second wall and a third wall, the micro-guides being provided on the first wall, the second wall and the third wall;

the first wall surface and the second wall surface are arranged oppositely, and two sides of the third wall surface are respectively connected with the second wall surface and the first wall surface.

The three-way dislocation assembly pulley comprises the pulley of three axle center at different installation faces, all is provided with the spacing groove that sets up with little guide rail cooperation on the pulley, and the three-way dislocation assembly pulley includes: a first pulley, a second pulley, and a third pulley.

The first pulley contacts with the first wall, and the spacing groove of the first pulley is engaged with the micro-guide rail arranged on the first wall in a matching way, the second pulley contacts with the second wall, and the spacing groove of the second pulley is engaged with the micro-guide rail arranged on the second wall, the third pulley contacts with the third wall, and the spacing groove of the third pulley is engaged with the micro-guide rail arranged on the third wall.

The utility model relates to a limiting auxiliary system, in particular to a limiting auxiliary system which is set in a pulley guide rail transmission mode, and a pulley is supported between back plates of a backpack plate, so that on one hand, the friction force of relative sliding between the backpack plate and the back plates can be reduced, and the noise is reduced, on the other hand, the limiting auxiliary system can also play a certain limiting role when the backpack plate and the back plates are in relative sliding displacement, and the backpack plate is prevented from tilting backwards, and after a load is loaded, the backpack can tilt backwards or the backpack plate deforms, and the back plates and a mounting plate can be extruded to cause sliding friction, so that the pulley is used for supporting the backpack plate, and once the backpack plate deforms or tilts backwards, the pulley can support the back plates and the backpack plate to perform sliding friction.

Based on the improvement, the application discloses be applied to knapsack slip auxiliary system, including the knapsack body that is used for carrying the load, with the backplate of human back contact, set up the baldric on the backplate, the knapsack still includes knapsack board and mounting panel, knapsack body fixed mounting is on the knapsack board, and mounting panel slidable ground connects in the backplate, and is provided with transmission system and energy storage equipment on the mounting panel.

The transmission systems are symmetrically arranged on two sides of the back plate, each transmission system comprises a stressed rack, a power rack and a speed change gear, the stressed racks are arranged on two sides of the mounting plate, the power racks are fixedly connected to the back plate, the speed change gear is rotatably arranged on the back plate and is respectively meshed with the power racks and the stressed racks, one end of the energy storage device is fixedly connected to the back plate, and the other end of the energy storage device is fixedly connected to the mounting plate;

the backpack further comprises a sliding assist system and a spacing assist system.

In some embodiments of the utility model, the sliding assistance system comprises a first rail and a first set of pulleys;

the first guide rail is fixedly arranged on two sides of the backpack plate, the power rack is arranged on one side surface of the first guide rail, the first pulley block comprises a plurality of pulleys, and the rotating axis of the first pulley block is fixedly arranged on two sides of the backboard;

the first pulley block is in sliding limit fit with the first guide rail, so that the back plate can relatively and limitedly slide along the guide direction of the first guide rail relative to the backpack plate.

The sliding auxiliary system further comprises second guide rails arranged at the left end and the right end of the back plate respectively, guide portions are fixedly connected to the mounting plate opposite to the second guide rails, and the second guide rails are slidably sleeved with the guide portions.

In one embodiment of the utility model, the energy storage means comprises a plurality of springs.

The change gear is provided with a plurality ofly, and a plurality of change gear is in proper order arrayed along power rack advancing direction.

In an embodiment of the utility model, the burden reduction backpack further includes a limit auxiliary system, the limit auxiliary system is fixedly installed on the back plate, and the limit auxiliary system is used for supporting a sliding gap between the backpack plate and the back plate.

The limiting auxiliary system comprises a second pulley block, the second pulley block comprises a plurality of pulleys, the rotating axis of the second pulley block is fixedly arranged on two sides of the bottom of the back plate, and the second pulley block is contacted and supported on the outer surface of the first guide rail and moves up and down along the micro guide rail on the outer surface of the first guide rail.

The utility model has the beneficial effects that:

the movement form of the sampling guide rail and the pulley transmission fit between the backpack plate and the back plate reduces the friction force of the backpack and the back plate in relative movement, and simultaneously can also reduce the noise problem caused by the relative movement of the back plate and the backpack plate in the burden reduction working process of the burden reduction backpack.

Drawings

FIG. 1 is a schematic exploded view of a backpack according to an embodiment of the present invention;

FIG. 2 is an exploded view of the backpack of the present invention;

FIG. 3 is a schematic view of the internal structure of the backpack according to the embodiment of the present invention;

FIG. 4 is a schematic view of the internal structure of the backpack according to the embodiment of the present invention;

fig. 5 is a schematic diagram of an internal structure of a backpack sliding assistance system according to an embodiment of the present invention.

Description of the reference numerals:

110. a backpack body; 120. a backpack plate; 130. a back plate; 131. shoulder straps; 140. mounting a plate; 200. a transmission system; 210. a speed change gear; 211. a first gear; 212. a second gear; 221. a stressed rack; 222. a power rack; 300. an energy storage device; 310. a spring; 321. a guide groove; 322. a spring terminal; 400. a sliding assistance system; 410. a first guide rail; 411. a first wall surface; 412. a second wall surface; 413. a third wall surface; 414. a U-shaped groove; 415. a micro-guide; 420. a first pulley block; 421. a first pulley; 422. a second pulley; 423. a third pulley; 424. a limiting groove; 430. a second guide rail; 440. a guide section; 500. a limit auxiliary system; 510. a second pulley block.

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 used only for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of 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", "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.

Throughout the description of the present application, it is to be noted that, unless otherwise expressly 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.

The following is a description of the preferred embodiments of the present application in conjunction with figures 1-5.

The backpack shown in fig. 1-2 includes a backpack body 110 for carrying a load, a back plate 130 contacting the back of a human body, and shoulder straps 131 provided on the back plate 130.

The backpack also includes a backpack plate 120 and a mounting plate 140;

the backpack body 110 is fixedly installed on the backpack plate 120, the mounting plate 140 is slidably connected to the back plate 130, and the mounting plate 140 is provided with a transmission system 200 and an energy storage device 300;

it should be noted that, the working principle of the above burden-reducing backpack is as follows:

under the ideal condition of not considering the friction force and the air resistance, when the human body is in a static state when carrying the backpack of the present invention, the backpack body 110, the transmission system 200, the human body and the back plate 130 are in a balanced state.

When a person walks, the backpack can move in various directions such as up, down, left and right directions along with the activities of the shoulders, the back, the buttocks and the like of the human body, wherein the acceleration force generated by the up-and-down fluctuation activities when the backpack is started and stopped and the activity direction is changed can generate additional periodic load to the human body except the self weight of the backpack, and the load can be higher than three times or even higher than the actual load of the backpack sometimes, so that the backpack can cause more compression to the shoulders and the spine of the human body.

When the human body starts to move upwards from a static state, the back plate 130 directly contacted with the human body synchronously moves upwards, the backpack body 110 still keeps the original position under the action of inertia, but the backpack body 110 moves downwards relative to the back plate 130, so that the backpack body is driven by the transmission system 200 fixed on the back plate 130 to start to rotate, and the force-bearing rack 221 meshed with the small wheel of the speed change gear 210 is driven to move at a set speed change ratio, so that the energy storage device 300 connected with the bottom stores the force.

The energy storage device 300 is exemplified by the elastic energy storage method commonly used in the conventional load-reducing backpack, and the additional elastic force generated during the deformation of the energy storage device 300 is just equal to the acting force when the gravity of the backpack body 110 is overcome and the backpack body 110 moves upward relative to the ground, but is not enough to overcome the gravity of the backpack body 110, so that the backpack body 110 and the ground are still in a relatively static state. When the human body starts to move downwards as the direction is changed, the back plate 130 also moves downwards, and at this time, the backpack body 110 moves upwards relative to the back plate 130, and the energy storage device 300 loses the energy storage condition, and starts to continuously release the stored force, and drives the speed change gear 210 to rotate reversely, so that the extra elastic force stored by the energy storage device 300 is transmitted to the power rack 222, and during this period, the extra elastic force released by the energy storage device 300 enables the backpack body 110 to just overcome the self gravity and not move downwards relative to the ground. During the accumulation and release of the accumulated force by the energy accumulating means 300, the position of the backpack body 110 is kept relatively still with respect to the ground at all times, thereby achieving a visual suspension effect.

In the above description, the stored force of the energy storage means 300 actually comes from the work done when the human body moves upward, but due to the linear power storage characteristic of the energy storage means 300, the work done when the human body moves upward against the backpack gravity is gently stored; when the energy storage device 300 releases the stored force, the force is still released in a relatively gentle linear form, so that the human body feels relieved; during the period of storing and releasing the stored force, the backpack body 110 is always in a static state relative to the ground, so that the human body does not feel the impact when the backpack body 110 overcomes the gravity rise and the free fall at all, but only feels the gentle deformation of the energy storage device 300.

It is further understood that the above-described transmission system 200 functions as: the additional acting force and the huge impact force generated instantly when the backpack body 110 is started or stopped or the direction is converted into the continuous small and gentle acting force when the elastic component is deformed are converted into the upward and downward acceleration movement, so that the burden reduction effect on the body feeling is realized.

The backpack body 110 is kept static with the ground as much as possible through the transmission system 200, the spring 310 of the energy storage device 300 is stretched and contracted along with the change of the gravity center when a human body walks or runs, when the backpack body 110 moves relative to the back plate 130, taking the backpack body 110 to move downward relative to the back plate 130 as an example, as shown in the figure, the backpack body 110 drives the power rack 222 on the plate to move downward, the power rack 222 is meshed with the speed change gear 210 to drive the speed change gear 210 to rotate, specifically, the left speed change gear 210 rotates counterclockwise, the right speed change gear 210 rotates clockwise, meanwhile, as the speed change gear 210 is meshed with the force bearing rack 221, the left and right speed change gears 210 drive the mounting plate 140 to move upward, the spring 310 extends, and the backpack body 110 does work to store the work when moving. The final effect is that when the back plate 130 moves up and down together with the human body, the acceleration force generated when the backpack moves up and down is converted into the deformation force of the spring 310 through the speed change gear 210 and the energy storage device 300, and then the backpack body 110 is maintained in a state of being relatively static to the ground through the elastic deformation force, so that the gravity acceleration force of the load-bearing backpack becomes gentle and even eliminated, and the spine of the human body is better protected. Because the backpack body 110 is still relative to the ground, the load is prevented from moving up and down along with the human body, and the inertia force impacts the human body to make the human body feel tired.

Based on the above-mentioned burden-reducing principle of the backpack, in the process of burden-reducing work of the backpack, the problem of large friction force caused by relative movement between the backpack and the back plate 130 is solved, and meanwhile, due to hard friction between the backpack and the back plate 130, the burden-reducing backpack can also generate noise in the process of burden-reducing work.

In a refinement of the present application, as shown in fig. 3-5, the load reduction backpack is provided with a slide assist system 400.

The sliding assistance system 400 includes a first rail 410 and a first set of pulleys 420.

The first guide rail 410 is fixedly installed at both sides of the backpack plate 120, and the rotation axis of the first pulley block 420 is fixedly installed at both sides of the backboard 130.

The first pulley block 420 is in sliding limit fit with the first guide rail 410, so that the backboard 130 slides relatively to the first guide rail 410 along the guiding direction of the first guide rail 410 in a limit manner relative to the backpack board 120.

It should be noted that, in the technical solution of the present application, the sliding friction between the backpack plate 120 and the back plate 130 of the conventional load reduction backpack is changed into the rolling friction between the pulleys and the sliding rails, so as to reduce the friction of the relative displacement between the backpack plate 120 and the back plate 130, specifically, the first guide rails 410 are fixedly installed on both sides of the backpack plate 120.

The first pulley block 420 comprises a plurality of pulleys, the rotating axis of the first pulley block 420 is fixedly installed at two sides of the back plate 130, and the first pulley block 420 is in sliding limit fit with the first guide rail 410, so that the back plate 130 slides relatively in a limit manner along the guiding direction of the first guide rail 410 relative to the backpack plate 120.

According to the above-mentioned improvement, in the embodiment of the sliding assistance system 400 of the present application, as shown in fig. 5, the first guide rail 410 is formed with a U-shaped groove 414 therein.

A plurality of convex micro-guide rails 415 which are the same as the extension direction of the guide rails are respectively arranged on the outer side and the inner side of the first guide rail 410.

The U-shaped groove 414 includes a first wall 411, a second wall 412, and a third wall 413, and the micro guide 415 is disposed on each of the first wall 411, the second wall 412, and the third wall 413;

the first wall 411 and the second wall 412 are disposed opposite to each other, and both sides of the third wall 413 are connected to the second wall 412 and the first wall 411, respectively.

The three-way dislocation assembly pulley comprises the pulley of three axle center at different installation faces, all is provided with the spacing groove 424 that sets up with little guide rail 415 cooperation on the pulley, and the three-way dislocation assembly pulley includes: a first pulley 421, a second pulley 422, and a third pulley 423.

The first pulley 421 contacts with the first wall 411, and the limiting groove 424 of the first pulley 421 is engaged with the micro-guide 415 disposed on the first wall 411, the second pulley 422 contacts with the second wall 412, and the limiting groove 424 of the second pulley 422 is engaged with the micro-guide 415 disposed on the second wall 412, the third pulley 423 contacts with the third wall 413, and the limiting groove 424 of the third pulley 423 is engaged with the micro-guide 415 disposed on the third wall 413.

It should be noted that the three pulleys, i.e., the first pulley 421, the second pulley 422, and the third pulley 423, are respectively in contact with the three wall surfaces in the U-shaped groove 414, so that the sliding process is more stable, and the first slide rail is limited in multiple directions, so that the burden reduction movement of the backpack is more linear and smooth.

In order to increase the stability of the sliding movement between the back plate 130 and the backpack plate 120, in an embodiment of the present application, as shown in fig. 3 to 4, the sliding assistance system 400 further includes second guide rails 430 respectively disposed at the left and right ends of the back plate 130.

A guiding portion 440 is fixedly connected to the mounting plate 140 at a position opposite to the second rail 430, and the guiding portion 440 is slidably sleeved on the second rail 430.

Meanwhile, in other embodiments of the present application, as shown in fig. 3-4, a position limiting auxiliary system 500 is added.

The auxiliary spacing system 500 is fixedly mounted on the backboard 130, and the auxiliary spacing system 500 is used for supporting the sliding gap between the backpack plate 120 and the backboard 130.

In the embodiment of the present application, the auxiliary limit system 500 includes:

the second pulley 422 group comprises a plurality of pulleys, and the rotating axes of the second pulley 422 group are fixedly arranged at two sides of the bottom of the back plate 130;

the second pulley 422 is supported in contact with the outer surface of the first guide rail 410 and moves up and down along the micro guide rail 415 disposed outside the first guide rail 410.

It should be noted that, in a specific embodiment of the auxiliary limit system 500 of the present invention, the auxiliary limit system 500 is configured in a pulley rail transmission manner, and the pulley is supported between the back plates 130 of the backpack plates 120, so that on one hand, the friction force of the relative sliding between the backpack plates 120 and the back plates 130 can be reduced, and the noise is reduced, on the other hand, the auxiliary limit system 500 can also play a certain limit role when the backpack plates 120 and the back plates 130 slide and displace relative to each other, so as to prevent the backpack plates 120 from tilting backwards, and after a backpack is loaded, the backpack will tilt backwards or the backpack plates 120 deform, and the back plates 130 and the backpack plates 120 will be pressed to cause sliding friction, so that the pulley is pressed against the backpack plates 120, and once the backpack plates 120 deform or tilt backwards, the pulley will support the back plates 130 and the backpack plates 120 to perform sliding friction.

According to the above improvement of the sliding assistance system 400, the present application further optimizes the burden reduction mode of the burden reduction backpack according to the improvement, specifically:

the backpack further includes a mounting plate 140, the mounting plate 140 is slidably connected to the back plate 130, and the transmission system 200 and the energy storage device 300 are both fixedly mounted on the mounting plate 140.

The transmission system 200 includes a power rack 222, a force rack 221 and a change gear 210, wherein the power rack 222 is disposed on a side surface of the first guide rail 410, the force rack 221 is fixedly installed on two sides of the mounting plate 140, the change gear 210 is rotatably installed on the back plate 130, and the change gear 210 is respectively engaged with the power rack 222 and the force rack 221.

In one embodiment of the present application, the transmission gear 210 is provided in plurality, and the plurality of transmission gears 210 are sequentially arrayed along the traveling direction of the power rack 222.

It should be noted that the number of the speed change gear 210 sets can be increased appropriately according to the size of the backpack and the size of the load, so as to achieve sufficient load bearing capacity and stability.

The speed change gear 210 is composed of a first gear 211 and a second gear 212 which have different diameters, the diameter of the first gear 211 is larger than that of the second gear 212, and the first gear 211 and the second gear 212 are coaxial and are processed into a whole.

The first gear 211 is engaged with the power rack 222, and the second gear 212 is engaged with the force rack 221.

When the backpack body 110 and the backpack plate 120 for fixing the backpack move relative to the back plate 130, the power racks 222 disposed at both sides of the backpack plate 120 drive the first gear 211 to rotate, the second gear 212 simultaneously rotates with the first gear 211 to drive the force-receiving rack 221 to move, at this time, the whole speed-changing gear 210 can be abstractly regarded as a lever, the first gear 211 serves as a force-applying part, the second gear 212 serves as a force-receiving part, the central axis of the speed-changing gear 210 serves as a fulcrum of the lever, and since the diameter of the first gear 211 is greater than that of the second gear 212, that is, the speed-changing gear 210 is a labor-saving lever with the length of the force-applying part longer than that of the force-receiving part, the design has the beneficial effects of, on one hand, amplifying the relative movement between the backpack body 110 and the human body, enabling the very slight up-and-down movement of the human body to also enable the spring 310 to generate deformation for storing force through speed change, and improving the sensitivity of the spring 310 for responding to the movement state change of the backpack body 110, on the other hand, for the selection of the spring 310, the spring 310 with a larger elastic coefficient can be selected as the energy storage device 300, and the larger the elastic coefficient of the spring 310 is, the smaller the deformation amount is, so that the space occupation area of the accommodating part of the spring 310 can be sufficiently reduced, and the space utilization rate of the back plate 130 can be improved.

One end of the energy storage device 300 is fixedly connected to the back plate 130, and the other end of the energy storage device 300 is fixedly connected to the mounting plate 140.

The energy storage device 300 includes a plurality of springs 310.

In the embodiment of the present application, the mounting plate 140 is provided with a plurality of guide grooves 321, the guide grooves 321 are disposed corresponding to the springs 310, the guide grooves 321 are provided with slidable spring terminals 322, the spring terminals 322 are provided with hooks, and the spring terminals 322 are fixedly connected to one ends of the springs 310.

The other end of the spring 310 is fixedly connected to the back plate 130.

Wherein, the guiding groove 321 part can also be provided as the spring 310 accommodating part and the spring accommodating part cover for closing the spring box.

Two ends of the spring 310 are respectively connected to the spring 310 accommodating part and the mounting plate 140, so as to realize the elastic connection between the backpack body 110 and the transmission system 200 and the back plate 130.

In summary, the technical scheme of the application adopts a working form in practical production application as follows:

the speed-change gears 210 are respectively fixed on the left and right sides of the back plate 130 and are arranged in a left-right symmetrical manner.

Two first guide rails 410 which are arranged in parallel are arranged on the backpack plate 120 and are arranged on the left side and the right side of the backpack plate 120, and the power rack 222 and the first guide rails 410 are processed into a whole.

The power rack 222 is engaged with the first gear 211 of the speed change gear 210.

The first guide rail 410 is a U-shaped guide rail, the inner three sides of the guide rail are further provided with a micro guide rail 415, the outer top is also provided with the micro guide rail 415, and the outer back is fixed with the power rack 222.

The first guide rail 410 is provided with a first pulley block 420 for movement therein.

The first pulley block 420 is provided as a three-way dislocation wheel, and is respectively contacted and limited with three inner walls of the first guide rail 410 forming the U-shaped groove 414 in three directions, so that the sliding stability of the first pulley block 420 on the first guide rail 410 is improved.

The three-way dislocation wheel is composed of three U-shaped pulleys with different installation surfaces, and is respectively attached to the front, the rear and the inner side surfaces in the U-shaped groove 414 of the first guide rail 410.

The groove of the U-shaped pulley is clamped with the micro guide rail 415 on the inner side of the first guide rail 410, so that the stability of the unidirectional sliding of the pulley is further improved, and the motion stability of the whole pulley block is improved.

Two second guide rails 430 that are parallel to each other are respectively and fixedly disposed on the left and right sides of the central axis of the back plate 130, a guide portion 440 is disposed on the mounting plate 140 opposite to the second guide rails 430, and the second guide rails 430 are slidably sleeved with the guide portion 440.

The force receiving racks 221 are two in number, are fixedly installed at both sides of the mounting plate 140, and are engaged with the second gear 212 of the speed change gear 210.

The mounting plate 140 is fixedly connected to one end of the spring 310, and the other end of the spring 310 is fixedly connected to the back plate 130.

The back plate 130 is rotatably provided with two second pulley 422 sets, and the two second pulley 422 sets are used for changing the sliding friction between the backpack plate 120 and the back plate 130 after being stressed and deformed into rolling friction.

When the backpack body 110 moves relative to the back plate 130, since the backpack moves in various directions such as up, down, left, and right directions according to the movement of the shoulder, back, hip, etc. of the human body when a person walks, the first guide rail 410, the second guide rail 430, the first pulley block 420, and the auxiliary conventional wheels function to limit the movement of the backpack body 110 and the backpack plate 120 relative to the back plate 130 to a stable up-and-down movement with a low friction force, thereby maximizing the burden reduction effect.

In conclusion, the utility model discloses an auxiliary system applied to backpack sliding, which is used for solving the problem that the friction force caused by the relative movement of a backpack and a back plate is large in the use process of a load-reducing backpack and the problem of noise generated in the load-reducing work process of the load-reducing backpack.

The utility model relates to a backpack plate, which is characterized in that a sliding auxiliary system is arranged in a pulley guide rail transmission mode to reduce friction of relative displacement of the backpack plate and a back plate.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that a person skilled in the art of mechanical load-reducing backpacks could make several modifications and substitutions 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 (9)

1. A sliding assistance system for a backpack, said backpack comprising: the backpack comprises a back plate, a backpack plate, a transmission system capable of enabling the back plate and the backpack plate to move relatively and an energy storage device for realizing the burden reduction function of the burden reduction backpack;

the load reduction backpack is characterized by further comprising a sliding auxiliary system;

the slide assist system includes:

the first guide rails are fixedly arranged on two sides of the backpack plate;

the rotating axes of the first pulley blocks are fixedly arranged on two sides of the back plate;

the first pulley block is in sliding limit fit with the first guide rail, so that the backboard can relatively and limitedly slide along the guide direction of the first guide rail relative to the backpack board.

2. The slide assist system of claim 1 wherein the backpack further comprises a mounting plate slidably connected to the back plate, and wherein the drive train and the energy storage device are both fixedly mounted on the mounting plate.

3. The sliding assist system of claim 2 wherein the transmission system comprises:

a power rack provided to a side surface of the first guide rail;

the stress racks are fixedly arranged on two sides of the mounting plate;

and the variable-speed gear is rotatably arranged on the back plate and is respectively meshed with the power rack and the stressed rack.

4. The sliding assist system of claim 1 wherein the first rail has a U-shaped slot formed therein;

the outer side and the inner side of the first guide rail are respectively provided with a plurality of convex micro guide rails with the same extension direction as the guide rails.

5. The sliding assistance system of claim 4 wherein said first pulley block is a three-way offset pulley block slidable within said U-shaped channel;

the U-shaped groove includes: a first wall, a second wall, and a third wall;

the micro guide rails are arranged on the first wall surface, the second wall surface and the third wall surface;

the first wall surface and the second wall surface are arranged oppositely, and two sides of the third wall surface are respectively connected with the second wall surface and the first wall surface;

the three-way staggered pulley block consists of three pulleys with axes on different mounting surfaces, and limiting grooves matched with the micro guide rails are formed in the pulleys;

the three-way dislocation pulley block comprises: a first pulley, a second pulley, and a third pulley;

the first pulley is in contact with the first wall surface, and a limiting groove of the first pulley is matched and meshed with a micro guide rail arranged on the first wall surface;

the second pulley is in contact with the second wall surface, and a limiting groove of the second pulley is matched with a micro guide rail arranged on the second wall surface;

the third pulley with the contact of third wall, just the spacing groove of third pulley with set up in little guide rail cooperation on the third wall.

6. The sliding assist system of claim 2 further comprising:

the second guide rails are fixedly arranged at two ends of the back plate;

the guide part is fixedly connected to the mounting plate at a position opposite to the second guide rail;

the guide part is slidably sleeved on the second guide rail.

7. The slide assist system of claim 2 wherein one end of the energy storage device is fixedly attached to the back plate and the other end of the energy storage device is fixedly attached to the mounting plate.

8. The sliding assist system of claim 1 wherein said load reduction backpack further comprises a positive assist system;

the limiting auxiliary system is fixedly arranged on the back plate and is used for supporting a sliding gap between the backpack plate and the back plate.

9. The slide assist system of claim 8 wherein the limit assist system comprises:

the second pulley block comprises a plurality of pulleys, and the rotating axes of the second pulley block are fixedly arranged on two sides of the bottom of the back plate;

the second pulley block is contacted with and supported on the outer surface of the first guide rail and moves up and down along the micro guide rail arranged on the outer side of the first guide rail.

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