CN218151274U

CN218151274U - Knee joint driven efficient bidirectional transmission power generation device

Info

Publication number: CN218151274U
Application number: CN202222496661.0U
Authority: CN
Inventors: 邵家儒; 沈卫东; 米林; 谭伟
Original assignee: Chongqing Nengyan Institute Of Technology Co ltd
Current assignee: Chongqing Nengyan Institute Of Technology Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-12-27
Anticipated expiration: 2032-09-21

Abstract

The utility model discloses a knee joint driven high-efficient bidirectional transmission power generation facility relates to knee joint drive electricity generation technical field. The utility model comprises a shell, the shell is connected with one end of a fixed block, an input shaft is arranged at the joint of the shell and the fixed block, the fixed block is fixedly connected with the input shaft, and the input shaft is rotatably connected with the shell; the inside of shell still is provided with drive assembly and motor main part, and the input shaft is connected with drive assembly, and the input shaft passes through drive assembly transmission with motor main part and is connected, and motor main part's the outside is fixed with inertia flywheel. The utility model discloses a shell, fixed block, input shaft and electricity generation subassembly's structure cooperation design can have effectively turns into unidirectional rotation with the two-way rotation of knee joint when the device uses to when can having effectively solving the knee joint state and changing, the motor rotates and appears blocking the problem that influences the generating efficiency.

Description

Knee joint driven efficient bidirectional transmission power generation device

Technical Field

The utility model belongs to the technical field of the knee joint drive electricity generation, especially, relate to a knee joint driven high-efficient two-way transmission power generation facility.

Background

With the continuous progress of society, various wearable electronic devices, exoskeletons, artificial limbs and the like are rapidly developed, and the continuous supply of electric energy of the devices is a problem which troubles people. When a user needs to continuously work for a long time or carry out outdoor work, the user cannot be charged in time, and for soldiers who perform outdoor tasks, continuous electric energy supply is an important guarantee for the soldiers to smoothly complete the tasks; in order to avoid influencing the flexibility of field activities of users, the volume and the weight of a power supply carried by the users are reduced as much as possible, but the existing battery has low energy density, long charging time and short service life and cannot meet the requirements.

Researchers have therefore sought sustainable energy supplies for portable devices to address these issues. Research shows that when a human body normally walks, the knee joint approximately generates 67W of power to assist walking, wherein more than half of the power executes negative work, and the generated electric energy can completely meet the electric energy requirement of the portable equipment by collecting the power generated when the human body walks.

At present, the existing knee joint-driven power generation devices mainly consist of three parts: 1: the relative rotation between the knee joints is output to the next device as a power source using the relevant device. Such related devices include, but are not limited to: (1) a helical spring, (2) a flexible rope, (3) a rigid shaft; 2: the power input by the knee joint is amplified to a certain degree by using an amplifying device, and the current mainstream amplifying device is realized by using a gear mechanism; 3: generating power by using a motor; however, the existing joint power generation device has the defect that the bidirectional rotation of the knee joint cannot be converted into unidirectional rotation, and when the state of the knee joint changes (such as lifting and kicking the leg), the rotation direction of the motor changes, the rotation is blocked, and the power generation efficiency is seriously influenced.

Therefore, the application provides a knee joint driven efficient bidirectional transmission power generation device, and provides another solution for the technical problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a knee joint driven high-efficient two-way transmission power generation facility to solve the problem that mentions in the background art.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: a knee joint driven efficient bidirectional transmission power generation device comprises a shell, wherein the shell is connected with one end of a fixing block, an input shaft is arranged at the joint of the shell and the fixing block, the fixing block is fixedly connected with the input shaft, and the input shaft is rotatably connected with the shell; the motor is characterized in that a transmission assembly and a motor main body are further arranged inside the shell, the input shaft is connected with the transmission assembly, the input shaft is in transmission connection with the motor main body through the transmission assembly, and an inertia flywheel is fixed on the outer side of the motor main body.

Furthermore, the transmission assembly comprises a first inner wheel, a first spine, a first ratchet wheel, an output gear, a transmission gear and a motor gear, wherein a rotating shaft of the motor body is connected with the motor gear, the motor gear is meshed with the transmission gear, the output gear is meshed with the transmission gear, the first ratchet wheel is meshed with the output gear, the first inner wheel is positioned at the upper end of the first ratchet wheel, the first spine is arranged at the lower end of the first inner wheel, the first inner wheel is matched and connected with the first ratchet wheel through the first spine, an elastic element is fixed at one end of the first spine, which is close to the first inner wheel, and the input shaft is meshed and connected with the first inner wheel.

Furthermore, the transmission assembly further comprises a second inner wheel, a second thorn and a second ratchet wheel, the second inner wheel, the second thorn and the second ratchet wheel are located on one side of the first inner wheel, the first thorn and the first ratchet wheel, the second ratchet wheel is connected with the first ratchet wheel in a meshed mode, the second inner wheel is located on the upper end of the second ratchet wheel, the second thorn is arranged at the lower end of the second inner wheel, the second inner wheel is connected with the second ratchet wheel in a matched mode through the second thorn, an elastic element is fixed to one end, close to the second inner wheel, of the second thorn, and the input shaft is connected with the second inner wheel in a meshed mode.

Furthermore, the input shaft, the first inner wheel, the second inner wheel, the first spine, the second spine, the first ratchet wheel, the second ratchet wheel, the output gear, the transmission gear and the motor gear are all rotationally connected with the shell through the fixed shaft.

Furthermore, the first inner wheel, the second inner wheel, the first spine, the second spine, the first ratchet wheel, the second ratchet wheel, the output gear, the transmission gear and the motor gear are all fixed on the corresponding fixed shafts through sleeves.

Furthermore, ratchet grooves are formed in the first ratchet wheel and the second ratchet wheel, and the ratchet grooves formed in the first ratchet wheel and the second ratchet wheel are opposite.

The utility model discloses following beneficial effect has:

the utility model discloses a shell, fixed block, input shaft and electricity generation subassembly's structure cooperation design can have effectively turns into unidirectional rotation with the two-way rotation of knee joint when the device uses to when can have effectively solving the knee joint state and change, the motor rotates and appears blocking the problem that influences the generating efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention;

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

FIG. 3 is an exploded view of the inner structure of the housing of the present invention;

fig. 4 is a first assembly view of the present invention;

FIG. 5 is a second assembly view of the present invention;

fig. 6 is a third assembly view of the present invention;

fig. 7 is a fourth assembly view of the present invention;

fig. 8 is a fifth assembly view of the present invention;

fig. 9 is a schematic structural diagram of the motor main body and the inertia flywheel of the present invention.

In the drawings, the reference numbers indicate the following list of parts:

1. a housing; 2. a fixed block; 3. an input shaft; 4. a sleeve; 51. a first inner wheel; 52. a second inner wheel; 61. a first spine; 62. a second spine; 71. a first ratchet wheel; 72. a second ratchet wheel; 8. an output gear; 9. a transmission gear; 10. a motor gear; 11. a motor main body; 12. an inertial flywheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-9, the present invention relates to a knee joint driven high-efficiency bidirectional transmission power generation device, which comprises a housing 1, wherein the housing 1 is connected with one end of a fixed block 2, an input shaft 3 is arranged at the joint of the housing 1 and the fixed block 2, the fixed block 2 is fixedly connected with the input shaft 3, and the input shaft 3 is rotatably connected with the housing 1; the inside of shell 1 still is provided with drive assembly and motor body 11, and input shaft 3 is connected with drive assembly, and input shaft 3 is connected through drive assembly transmission with motor body 11.

When the knee joint bending machine is used, the shell 1 is fixed with a thigh, the fixing block 2 is fixed with a shank, the input shaft 3 is driven to rotate by the fixing block 2 when the knee joint is bent, the input shaft 3 is used for inputting power by relative rotation of the knee joint, and the bidirectional rotation of the knee joint is converted into unidirectional rotation through the transmission assembly and transmitted to the motor main body 11.

Specifically, the transmission assembly comprises a first inner wheel 51, a first spine 61, a first ratchet wheel 71, an output gear 8, a transmission gear 9 and a motor gear 10, a rotating shaft of a motor body 11 is connected with the motor gear 10, the motor gear 10 is meshed with the transmission gear 9, the output gear 8 is meshed with the transmission gear 9, the first ratchet wheel 71 is meshed with the output gear 8, the first inner wheel 51 is located at the upper end of the first ratchet wheel 71, the first spine 61 is arranged at the lower end of the first inner wheel 51, the first inner wheel 51 is matched and connected with the first ratchet wheel 71 through the first spine 61, an elastic piece is fixed at one end, close to the first inner wheel 51, of the first spine 61, and the input shaft 3 is meshed and connected with the first inner wheel 51.

Specifically, the transmission assembly further includes a second inner wheel 52, a second ratchet 62 and a second ratchet 72, the second inner wheel 52, the second ratchet 62 and the second ratchet 72 are located at one side of the first inner wheel 51, the first ratchet 61 and the first ratchet 71, the second ratchet 72 is engaged with the first ratchet 71, the second inner wheel 52 is located at an upper end of the second ratchet 72, the second ratchet 62 is located at a lower end of the second inner wheel 52, the second inner wheel 52 is engaged with the second ratchet 72 through the second ratchet 62, an elastic member is fixed at one end of the second ratchet 62 close to the second inner wheel 52, and the input shaft 3 is engaged with the second inner wheel 52; wherein, the elastic component is a spring or other components and structures with elasticity.

Specifically, ratchet grooves are formed in the first ratchet wheel 71 and the second ratchet wheel 72, and the ratchet grooves formed in the first ratchet wheel 71 and the second ratchet wheel 72 are opposite.

As described above, the input shaft 3 is engaged with the first inner race 51 and the second inner race 52 as a power source;

if the input shaft 3 moves clockwise, the first inner wheel 51 and the second inner wheel 52 move counterclockwise to drive the first spine 61 and the second spine 62 to synchronously move counterclockwise with the first inner wheel 51 and the second inner wheel 52, the first ratchet wheel 71 and the second ratchet wheel 72 internally comprise a pair of ratchet grooves which are arranged oppositely, and elastic pieces (springs or other elastic parts and structures) are arranged at the bottoms of the first spine 61 and the second spine 62 to ensure that certain contact force is always kept between the spines and the ratchet wheels; the first spine 61 and the second spine 62 synchronously move anticlockwise, the first ratchet wheel 71 is meshed with the first spine 61, and the second ratchet wheel 72 slips from the second spine 62; the first ratchet wheel 71 moves counterclockwise to drive the output gear 8 to move clockwise, and then the power is transmitted to the motor body 11 through the transmission gear 9 and the motor gear 10 by the output gear 8.

If the input shaft 3 moves counterclockwise, the first inner wheel 51 and the second inner wheel 52 move clockwise to drive the first spine 61 and the second spine 62 to synchronously move clockwise with the first inner wheel 51 and the second inner wheel 52, the first ratchet 71 and the first spine 61 slip with each other, the second ratchet 72 and the second spine 62 are engaged with each other and move clockwise, the second ratchet 72 and the first ratchet 71 are engaged with each other through an external gear, so that the first ratchet 71 moves counterclockwise to drive the output gear 8 to move clockwise, and power is transmitted to the motor main body 11 through the transmission gear 9 and the motor gear 10 through the output gear 8.

Further, no matter how the input shaft 3 rotates, the output gear 8 always moves clockwise, and the purpose of converting bidirectional rotation into unidirectional rotation is achieved.

Specifically, the input shaft 3, the first inner wheel 51, the second inner wheel 52, the first spine 61, the second spine 62, the first ratchet 71, the second ratchet 72, the output gear 8, the transmission gear 9 and the motor gear 10 are all rotatably connected with the housing 1 through fixed shafts, so that all components in the housing 1 can be conveniently positioned, wherein the first inner wheel 51, the second inner wheel 52, the first spine 61, the second spine 62, the first ratchet 71, the second ratchet 72, the output gear 8, the transmission gear 9 and the motor gear 10 are all fixed on the corresponding fixed shafts through the sleeves 4, and axial movement of the fixed shafts is avoided.

Specifically, an inertia flywheel 12 is fixed on the outer side of the motor body 11, the inertia flywheel 12 has a certain mass, the problem of the motor body 11 jamming is solved by installing the inertia flywheel 12, and the fact of installing the inertia flywheel 12 is to change the mass distribution of the motor body 11, further change the mass center of the motor body 11, and compensate the inertia. When the knee joint state changes, because the barycenter skew, motor body 11 continues to rotate under inertial effect, can effectually alleviate motor body 11 pivoted card pause, improves motor body 11 generating efficiency.

In the description of the present specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best understand the invention and its practical application. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a knee joint driven high-efficient bidirectional transmission power generation facility, includes shell (1), its characterized in that: the shell (1) is connected with one end of the fixed block (2), an input shaft (3) is arranged at the joint of the shell (1) and the fixed block (2), the fixed block (2) is fixedly connected with the input shaft (3), and the input shaft (3) is rotatably connected with the shell (1); the novel motor is characterized in that a transmission assembly and a motor main body (11) are further arranged inside the shell (1), the input shaft (3) is connected with the transmission assembly, the input shaft (3) is in transmission connection with the motor main body (11) through the transmission assembly, and an inertia flywheel (12) is fixed on the outer side of the motor main body (11).

2. The knee joint driven high-efficiency bidirectional transmission power generation device as claimed in claim 1, wherein: the transmission assembly comprises a first inner wheel (51), a first spine (61), a first ratchet wheel (71), an output gear (8), a transmission gear (9) and a motor gear (10), wherein a rotating shaft of the motor body (11) is connected with the motor gear (10), the motor gear (10) is meshed with the transmission gear (9), the output gear (8) is meshed with the transmission gear (9), the first ratchet wheel (71) is meshed with the output gear (8), the first inner wheel (51) is positioned at the upper end of the first ratchet wheel (71), the first spine (61) is arranged at the lower end of the first inner wheel (51), the first inner wheel (51) is matched and connected with the first ratchet wheel (71) through the first spine (61), an elastic piece is fixed at one end, close to the first inner wheel (51), of the first spine (61), and the input shaft (3) is meshed and connected with the first inner wheel (51).

3. The knee joint driven high-efficiency bidirectional transmission power generation device as claimed in claim 2, wherein: the transmission assembly further comprises a second inner wheel (52), a second ratchet (62) and a second ratchet wheel (72), wherein the second inner wheel (52), the second ratchet (62) and the second ratchet wheel (72) are positioned at one side position of the first inner wheel (51), the first ratchet (61) and the first ratchet wheel (71), the second ratchet wheel (72) is meshed with the first ratchet wheel (71), the second inner wheel (52) is positioned at the upper end position of the second ratchet wheel (72), the second ratchet (62) is arranged at the lower end of the second inner wheel (52), the second inner wheel (52) is matched and connected with the second ratchet wheel (72) through the second ratchet (62), an elastic piece is also fixed at one end, close to the second inner wheel (52), of the second ratchet (62), and the input shaft (3) is meshed and connected with the second inner wheel (52).

4. The knee joint driven efficient bidirectional transmission power generation device according to claim 3, characterized in that: the input shaft (3), the first inner wheel (51), the second inner wheel (52), the first spine (61), the second spine (62), the first ratchet wheel (71), the second ratchet wheel (72), the output gear (8), the transmission gear (9) and the motor gear (10) are all rotationally connected with the shell (1) through a fixed shaft.

5. The knee joint driven high-efficiency bidirectional transmission power generation device as claimed in claim 4, wherein: the first inner wheel (51), the second inner wheel (52), the first thorn (61), the second thorn (62), the first ratchet wheel (71), the second ratchet wheel (72), the output gear (8), the transmission gear (9) and the motor gear (10) are all fixed on corresponding fixed shafts through the sleeve (4).

6. The knee joint driven efficient bidirectional transmission power generation device according to claim 3, characterized in that: ratchet grooves are formed in the first ratchet wheel (71) and the second ratchet wheel (72), and the ratchet grooves formed in the first ratchet wheel (71) and the second ratchet wheel (72) are opposite.