CN216059562U - Linear transmission system and burden reduction backpack - Google Patents
Linear transmission system and burden reduction backpack Download PDFInfo
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- CN216059562U CN216059562U CN202121246748.1U CN202121246748U CN216059562U CN 216059562 U CN216059562 U CN 216059562U CN 202121246748 U CN202121246748 U CN 202121246748U CN 216059562 U CN216059562 U CN 216059562U
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Abstract
The utility model relates to the technical field of mechanical transmission devices, and discloses a linear transmission system and a load-reducing backpack, wherein the load-reducing backpack comprises a back plate connected with backpack shoulder straps and a mounting plate connected with a backpack load part, the linear transmission system is used for enabling the back plate and the mounting plate to relatively slide and weakening the load of the shoulder straps on the load, the linear transmission system comprises a guide rail fixed on the back plate, and a pulley and a gear fixed on the mounting plate, the guide rail is of a bent structure, a linear bulge is arranged on the inner side of the guide rail and is matched and connected with the gear, and a rack is arranged on the outer side of the guide rail and is meshed with the gear.
Description
Technical Field
The utility model relates to the technical field of mechanical transmission devices, in particular to a linear transmission system and a load reduction backpack.
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 which needs to be solved urgently.
The existing schoolbag is divided into a backpack backboard following human body movement and a backpack body with inertia, when a user walks, the backboard and the backpack body slide relatively, the burden reduction purpose is realized, however, the movement direction of the user in the backpack is not fixed, the force between the backpack backboard and the backpack body is not as good as preset, and the backpack only slides up and down, so that the connection transmission relationship between the backpack body and the backpack is needed to meet the requirement that the backpack still has the burden reduction function and is stable in operation when the user carries out multi-direction movement.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a linear transmission system and a load-reducing backpack, wherein the load-reducing backpack comprises a back plate connected with a backpack shoulder strap and a mounting plate connected with a backpack load part, the linear transmission system is used for enabling the back plate and the mounting plate to relatively slide and weakening the load of the shoulder strap on the load, the linear transmission system comprises a guide rail fixed on the back plate and a pulley and a gear fixed on the mounting plate, the guide rail is of a bent structure, a bulge is arranged on the inner side of the guide rail and is in matched connection with the gear, and a rack is arranged on the outer side of the guide rail and is meshed with the gear.
In some embodiments of the present application, a linear drive system comprises: the guide rails are of a bent structure, and a pair of linear protrusions which are oppositely arranged are arranged on the inner side of the bend; at least a set of pulley, the pulley is U type pulley, U type pulley with the protruding cooperation of straight line is connected. The bent outer side of the guide rail is provided with a rack, and the rack is meshed with the gear; the pulley and the gear are fixedly connected to a first flat plate, the pulley is fixedly connected to a second flat plate, and the linear transmission system is used for enabling the first flat plate and the second flat plate to move oppositely.
In some embodiments of the present application, the pulley further includes a fixed seat, and the pulley is a fixed pulley fixed on the fixed seat by an axis.
In some embodiments of the present application, a locking device is provided on the rail, and the pulley slides within the range of the locking device.
In some embodiments of the present application, a gear receiving portion is provided outside the gear, and the gear receiving portion includes a receiving cover provided to the gear.
In some embodiments of the present application, a load-reducing backpack is also disclosed, comprising a backpack body for carrying a load, a back plate contacting with the back of a human body, shoulder straps disposed on the back plate, a mounting plate fixedly connected to the backpack body, and a linear transmission system slidably connecting the mounting plate to the back plate; the backpack further comprises an energy storage device, 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 first flat plate is the back plate, and the second flat plate is the mounting plate.
In some embodiments of the present application, the guide rail is provided in two, respectively disposed at both sides of the mounting plate.
In some embodiments of the present application, each guide rail is provided with two gears and two sets of pulleys, wherein each set of pulleys includes two pulleys;
in some embodiments of the present application, each gear and each set of pulleys are disposed at one end of a guide rail.
Compared with the prior art, the linear transmission system and the burden-reducing backpack have the advantages that:
the guide rail is of a bent structure, and the linear protrusions are arranged on the inner side of the guide rail, so that the pulleys are in matched connection with the linear protrusions, the pulleys are fixed in four directions, and the stability and the bearing capacity of the linear transmission system are improved; the rack arranged on the outer side of the guide rail is meshed with the gear, and the gear and the pulley are fixed on the same flat plate, so that the relative sliding between the flat plates is more stable; the locking device is arranged on the guide rail, so that the sliding of the pulley is limited within a certain range, the relative sliding between the back plate and the mounting plate is prevented from exceeding inertia, the linear motion is maintained within a preset range, and the quality of the backpack is improved; by providing the gear housing, the range of the gear is defined.
Drawings
FIG. 1 is a block diagram of a backpack according to an embodiment of the present invention;
FIG. 2 is a block diagram of a backing plate according to an embodiment of the utility model;
FIG. 3 is a block diagram of a back plate and a mounting plate according to an embodiment of the present invention.
In the figure, 100, guide rails; 110. a linear protrusion; 120. a rack; 200. a pulley; 210. a fixed seat; 300. a gear; 400. a backpack body; 410. a back plate; 420. shoulder straps; 430. and (7) mounting the plate.
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 load reduction backpack is disclosed, which includes a back plate 410 contacting with the back of the human body, a shoulder strap 420 disposed on the back plate 410, a mounting plate 430 fixedly connected to the backpack body 400, a linear transmission system slidably connecting the mounting plate 430 to the back plate 410, and an energy storage device, wherein one end of the energy storage device is fixedly connected to the back plate 410, and the other end of the energy storage device is fixedly connected to the mounting plate 430.
Preferably, the energy storage device is of a spring structure.
In some embodiments of the present application, as shown in fig. 2, in which the linear transmission system includes at least one set of guide rails 100, at least one set of pulleys 200 and at least one set of gears 300, in the embodiment of the present application suitable for a backpack, two guide rails 100 are provided, respectively disposed on both sides of the mounting plate 430, two gears 300 and two sets of pulleys 200 are provided on each guide rail 100, two pulleys 200 are included in each set of pulleys 200, and each set of gears 300 and each set of pulleys 200 are provided at one end of the guide rail 100.
It should be noted that, by arranging the guide rails 100 to be symmetrical on both sides of the mounting plate 430, the acting force between the back plate 410 and the body is equally divided into two parts to be borne, and other transmission mechanisms are accommodated between the two guide rails 100, so that the backpack complex force transmission is adapted, the gears 300 are arranged at the two ends, each gear 300 and the two pulleys 200 complete sliding with the sliding rail together, because the friction force of the meshing of the gears 300 is larger than the sliding friction force of the pulleys 200, the friction force of the pulleys 200 corresponds to the friction force of one gear 300, so that the friction force applied to the inner side and the outer side of the guide rail 100 is equal, the abrasion speeds of the two sides are synchronous, the stability of the guide rail 100 is improved, the position setting of above guide rail 100 and the position setting of pulley 200 gear 300 have improved the stability and the low friction nature of whole knapsack, have further reduced the user and have born a burden, have improved user's use and have experienced.
In some embodiments of the present application, as shown in fig. 2-3, the guide rail 100 is a bent structure, and a pair of linear protrusions 110 are oppositely arranged on the inner side of the bend; the pulley 200 is a U-shaped pulley 200, and the U-shaped pulley 200 is connected with the bulge on the inner side of the guide rail 100 in a matching way; a rack 120 is arranged on the outer side of the guide rail 100, and the rack 120 is meshed with the gear 300; pulley 200 and gear 300 are provided for attachment to a first plate, pulley 200 is fixedly attached to a second plate, and a linear drive system is provided for relative movement of the first and second plates. In the embodiment of the present application that is suitable for a backpack, the first panel is the back panel 410 and the second panel is the mounting panel 430.
In some embodiments of the present application, the fixing base 210 is further included, the fixing base 210 is a protrusion on the back plate 410, and a through hole with an axis parallel to the back plate 410 is disposed on the protrusion, the pulley 200 is set as a fixed pulley 200, a fixed shaft is disposed on one side of an axis of the pulley 200, the fixed shaft penetrates through the through hole, so that the fixed pulley 200 is connected to the back plate 410, that is, the fixed pulley 200 is radially perpendicular to the back plate 410, and the meshing insection between the gear 300 and the guide rail 100 is perpendicular to the back plate 410, that is, the gear 300 is radially parallel to the back plate 410.
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.
Therefore, the working mode of the embodiment of the application is as follows:
the device makes the backpack body 400 keep still with the ground as much as possible through a linear transmission system, the backpack body 400 moves relative to the back plate 410 along with the change of the gravity center when a human body walks or runs, taking the upward movement of the human body as an example, the human body is connected with the shoulder strap 420 to drive the back plate 410 to move upwards together, at this time, due to the linear transmission device and the inertia effect, the backpack body does not descend along with the back plate 410 at once, so the backpack body 400 moves downwards relative to the back plate 410, the backpack body 400 drives the pulley 200 and the gear 300 to move downwards, the pulley 200 is connected with the guide rail 100 in a sliding way, the guide rail 100 is meshed with the gear 300 of the gear 300 to drive the gear 300 to rotate, specifically, the gear 300 on the left side rotates anticlockwise, the gear 300 on the right side rotates clockwise, and simultaneously, because the pulley 200 is clamped with the guide rail 100, the gear 300 is meshed with the rack 120 of the guide rail 100, the transmission gears 300 on the left and right sides drive the mounting plate 430 to move upwards, and the springs extend to store the backpack body 400 by doing work. The final effect is that, when the back plate 410 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 through the linear transmission and the energy storage device, and then the backpack body 400 is maintained in a state of being relatively static to the ground through the deformation force of the spring, so that the gravity acceleration force of the load backpack becomes gentle or even eliminated, and the spine of the human body is better protected. Because the backpack body 400 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.
Preferably, the linear transmission system of the present application is further provided with a locking device and a gear housing.
Wherein, the locking device is arranged on the linear protrusion 110 of the guide rail 100 for limiting the sliding of the pulley 200 in the locking device, and in one embodiment of the present application, the locking device is a screw arranged at both ends of the range in which the pulley 200 can slide, and the screw protrudes on the linear protrusion 110 of the guide rail 100 to prevent the pulley 200 from further sliding.
The locking device is arranged on the guide rail 100, so that the sliding of the pulley 200 is limited within a certain range, the relative sliding between the back plate 410 and the mounting plate 430 is prevented from exceeding the inertia, the linear motion is maintained within a preset range, and the quality of the backpack is improved.
Wherein the gear 300 is rotatably installed inside a gear receiving portion provided with a receiving cover, which is provided to the gear.
The gear receiving portion has a function of forming a space for mounting the gear 300 on the back plate 410 and sealing the space, so that the stability of mounting the gear 300 is improved, and the gear 300 is prevented from being damaged due to direct contact of other external objects with the gear 300, thereby prolonging the service life of the gear 300.
In summary, the embodiment of the utility model provides a linear transmission system and a load-reducing backpack, wherein a guide rail is arranged in a bending structure, and linear protrusions are arranged on the inner side of the guide rail, so that pulleys are in fit connection with the linear protrusions, and are fixed in four directions, thereby improving the stability and bearing capacity of the linear transmission system; the rack arranged on the outer side of the guide rail is meshed with the gear, and the gear and the pulley are fixed on the same flat plate, so that the relative sliding between the flat plates is more stable; the locking device is arranged on the guide rail, so that the sliding of the pulley is limited within a certain range, the relative sliding between the back plate and the mounting plate is prevented from exceeding inertia, the linear motion is maintained within a preset range, and the quality of the backpack is improved; by providing the gear housing, the range of the gear is defined.
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 (8)
1. A linear drive system, comprising:
the guide rails are of a bent structure, and a pair of linear protrusions which are oppositely arranged are arranged on the inner side of the bend;
the pulley is a U-shaped pulley, and the U-shaped pulley is connected with the linear protrusion in a matched manner;
the bent outer side of the guide rail is provided with a rack, and the rack is meshed with the gear;
the pulley and the gear are fixedly connected to a first flat plate, the pulley is fixedly connected to a second flat plate, and the linear transmission system is used for enabling the first flat plate and the second flat plate to move oppositely.
2. The linear drive system of claim 1, further comprising a fixed base, wherein the pulley is a fixed pulley having an axis fixed to the fixed base.
3. A linear drive system as claimed in claim 1, wherein the guide track is provided with a locking means, the pulley sliding within the range of the locking means.
4. The linear drive system of claim 1, wherein a gear receiving portion is provided outside the gear, the gear receiving portion including a receiving cover, the receiving cover being provided to the gear.
5. A load-reducing backpack comprising a backpack body for carrying a load, a back plate for contacting the back of a human body, shoulder straps provided on the back plate, a mounting plate fixedly connected to the backpack body, and the linear drive system of any one of claims 1-2, the linear drive system slidably connecting the mounting plate to the back plate;
the backpack further comprises an energy storage device, 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 first flat plate is the back plate, and the second flat plate is the mounting plate.
6. The load reduction backpack of claim 5, wherein there are two of said rails, one on each side of said mounting plate.
7. The load reduction backpack of claim 5 wherein each track has two gears and two sets of pulleys, wherein each set of pulleys includes two pulleys.
8. The load reduction backpack of claim 6, wherein each gear and each set of pulleys are disposed at one end of a rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121246748.1U CN216059562U (en) | 2021-06-04 | 2021-06-04 | Linear transmission system and burden reduction backpack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121246748.1U CN216059562U (en) | 2021-06-04 | 2021-06-04 | Linear transmission system and burden reduction backpack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216059562U true CN216059562U (en) | 2022-03-18 |
Family
ID=80663060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121246748.1U Active CN216059562U (en) | 2021-06-04 | 2021-06-04 | Linear transmission system and burden reduction backpack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216059562U (en) |
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2021
- 2021-06-04 CN CN202121246748.1U patent/CN216059562U/en active Active
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