CN111870456B

CN111870456B - Labor-saving mechanical device

Info

Publication number: CN111870456B
Application number: CN202010770496.6A
Authority: CN
Inventors: 范纪华; 朱东晖; 谌宏; 何晓崐; 姚江; 廖开源; 查宏超; 漆光宇; 韩宇琛
Original assignee: Jiangsu University of Science and Technology
Current assignee: Jiangsu University of Science and Technology
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-09-07
Anticipated expiration: 2040-08-04
Also published as: CN111870456A

Abstract

The invention provides a labor-saving mechanical device, which can convert gravitational potential energy of a human body when squatting down into elastic potential energy of a first spring for storage, and when the human body tends to move upwards, the elastic potential energy of the first spring is released to push the human body to ascend, so that the human body is helped to stand normally.

Description

Labor-saving mechanical device

Technical Field

The invention relates to the technical field of old-age aids, in particular to a labor-saving mechanical device.

Background

The exoskeleton machine is gradually applied to the fields of daily life and medical treatment due to good stability and high structural strength. The exoskeleton machine can realize two functions of assisting power and assisting walking. The power assisting device provides a force larger than the force which can be born by the user, the force born by the human body is converted into a machine so as to improve the loading capacity of the human body, and the walking assisting device helps the user overcome dyskinesia so as to complete the action which cannot be completed by the user.

Currently, exoskeleton machines are often used in the field of fire rescue to assist firefighters and rescue personnel in carrying heavy supplies and equipment. But the application is limited in ordinary life, and most of the applications are focused on theoretical research. For example, when the elderly or persons with limited mobility do squat, the knees of the elderly or persons with limited mobility are often not bent normally due to arthritis or other diseases, and the elderly or persons with limited mobility are not able to provide enough force to stand, squat and convert between the two, thereby causing difficulties in daily life. Therefore, a labor-saving mechanical device capable of assisting the walking, squatting and other movements of the human body is needed at present.

Disclosure of Invention

The invention aims to provide a labor-saving mechanical device which can assist a human body to walk, squat and do other exercises under the condition of no external energy.

In order to achieve the aim, the invention provides a labor-saving mechanical device which comprises an energy storage structure and two frames, wherein the two frames are symmetrically arranged along the center of the energy storage structure;

the energy storage structure comprises a shell, a sleeve and a middle shaft, wherein the sleeve is arranged in the shell and comprises an inner cylinder and an outer cylinder which can move along the axial direction and are arranged in a nested manner, the inner cylinder is provided with a cavity, the middle shaft penetrates through the sleeve along the axial direction, two ends of the middle shaft extend out of the shell, a part of the middle shaft, which is positioned in the cavity, is provided with a bulge, a first spring is also arranged in the outer cylinder, and two ends of the first spring are respectively connected with the inner cylinder and the shell;

the frame comprises a support, a connecting rod and a supporting ring, one end of the support is rotatably connected with the energy storage structure, the other end of the support is connected with one end of the supporting ring, one end of the connecting rod is rotatably connected with the middle area of the support, and the other end of the connecting rod is connected with one end of the middle shaft;

when the distance between the two support rings is changed, the middle shaft moves along the axial direction, so that the first spring is compressed or reset.

Optionally, the locking mechanism is arranged on the housing and comprises a locking rod and a second spring, one end of the locking rod is provided with a hook, the other end of the locking rod is fixed on the housing through the second spring, and the middle area of the locking rod is rotatably connected with the housing;

the outer wall of inner tube has a step face, and under the natural state, the trip compresses tightly the outer wall of inner tube, works as the inner tube removes to the trip blocks when the step face, the inner tube is locked, presses the locking lever and corresponds when the one end of second spring, the trip breaks away from the step face, the inner tube unblock.

Optionally, the middle area of the bracket is an area between two ends of the bracket, and/or the middle area of the locking rod is an area between two ends of the locking rod.

Optionally, the length of the inner cylinder in the axial direction is smaller than the length of the outer cylinder in the axial direction.

Optionally, the length of the cavity in the axial direction is greater than 6 cm.

Optionally, the support rings are semicircular rings, and the two support rings are arranged in parallel.

Optionally, an installation groove is formed in the inner wall of the supporting ring, and a sponge is installed in the installation groove.

Optionally, one end of the middle shaft connected to the connecting rods is provided with an extension plate, the width of the extension plate in the direction perpendicular to the axial direction is greater than the width of the middle shaft in the direction perpendicular to the axial direction, and the two connecting rods are rotatably connected with the extension plate.

Optionally, the positioning device further comprises a GPS locator disposed in the housing, and the GPS locator is configured to send positioning information of the labor-saving mechanical device to a receiver in real time.

The labor-saving mechanical device comprises an energy storage structure and two frames, wherein the two frames are symmetrically arranged along the center of the energy storage structure; the energy storage structure comprises a shell, a sleeve and a middle shaft, wherein the sleeve is arranged in the shell and comprises an inner cylinder and an outer cylinder which can move along the axial direction and are arranged in a nested manner, the inner cylinder is provided with a cavity, the middle shaft penetrates through the sleeve along the axial direction, two ends of the middle shaft extend out of the shell, a part of the middle shaft, which is positioned in the cavity, is provided with a bulge, a first spring is also arranged in the outer cylinder, and two ends of the first spring are respectively connected with the inner cylinder and the shell; the frame comprises a support, a connecting rod and a supporting ring, one end of the support is rotatably connected with the energy storage structure, the other end of the support is connected with one end of the supporting ring, one end of the connecting rod is rotatably connected with the middle area of the support, and the other end of the connecting rod is connected with one end of the middle shaft; when the distance between the two support rings is changed, the middle shaft moves along the axial direction, so that the first spring is compressed or reset. The invention can convert the gravitational potential energy of the human body when squatting down into the elastic potential energy of the first spring for storage, when the human body tends to move upwards, the elastic potential energy of the first spring is released to push the human body to ascend, thereby helping the human body to stand normally, and the invention is particularly suitable for the old with inconvenient leg movement, the disabled leg or the person with insufficient leg strength to use, and the energy exchange part of the invention is of a pure mechanical structure, is safer and more stable relative to the combination with the electromechanics, and is easy to disassemble and maintain when problems occur.

Drawings

FIG. 1 is a schematic structural view of a labor-saving mechanism provided in an embodiment of the present invention;

fig. 2 to 5 are schematic structural diagrams of an energy storage structure according to an embodiment of the present invention;

wherein the reference numerals are:

100-an energy storage structure; 101-a housing; 102-a sleeve; 102 a-an outer barrel; 102 b-an inner barrel; 103-medial axis; 103 a-extension plate; 103 b-bumps; 104-a locking structure; 104 a-a locking bar; 104 b-a hook; 104 c-a second spring; 105-a first spring; 200-a frame; 201-a scaffold; 202-connecting rod; 203-a supporting ring; q-cavity.

Detailed Description

The following describes in more detail embodiments of the present invention with reference to the schematic drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

Fig. 1 is a schematic structural diagram of a labor-saving mechanical device provided in this embodiment, fig. 2 to 5 are schematic structural diagrams of an energy storage structure 100 provided in this embodiment, wherein fig. 3 and 5 are schematic cross-sectional diagrams of the energy storage structure 100 provided in this embodiment. As shown in fig. 1 to 5, the labor-saving mechanical device includes an energy storage structure 100 and two frames 200, the two frames 200 have the same structure, and the two frames 200 are symmetrically disposed along the center of the energy storage structure 100. In this embodiment, the energy storage structure 100 is rectangular, and the two frames 200 are respectively disposed on two sides of the long side of the energy storage structure 100, but not limited thereto.

With continued reference to fig. 2 and 3, the energy storage structure 100 includes a housing 101, a sleeve 102, and a central shaft 103. The sleeve 102 is disposed in the housing 101 and includes an inner cylinder 102b and an outer cylinder 102a, and the inner cylinder 102b is disposed in the outer cylinder 102a in a nested manner and is capable of moving relative to the outer cylinder 102a in the axial direction. To ensure stability, the outer wall of the outer cylinder 102a is attached to the inner wall of the outer casing 101, and the outer wall of the inner cylinder 102b is attached to the inner wall of the outer cylinder 102 a.

Further, the inner cylinder 102b has a cavity Q, the middle shaft 103 axially penetrates through the sleeve 102, and both ends of the middle shaft 103 extend out of the housing 101, that is, one end of the middle shaft 103 axially extends into the sleeve 102 from outside the housing 101, and extends out of the housing 101 after penetrating through the sleeve 102 (and also penetrating through the cavity Q), and the middle shaft 103 can also move axially. The length of the inner cylinder 102b along the axial direction is smaller than that of the outer cylinder 102a along the axial direction, a first spring 105 extending along the axial direction is further arranged in the outer cylinder 102a, the first spring 105 is sleeved outside the middle shaft 103, and two ends of the first spring 105 are respectively connected with the inner cylinder 102b and the outer shell 101. The portion of the central shaft 103 located in the cavity Q has a protrusion 103b, and when the central shaft 103 moves axially, the protrusion 103b can move axially in the cavity Q, and when the protrusion 103b moves to contact the inner wall of the cavity Q, the inner cylinder 102b is forced to move axially relative to the outer cylinder 102a, and at this time, the first spring 105 can be compressed or stretched.

Further, one end of the middle shaft 103 connected to the connecting rod 202 has an extension plate 103a, and a width of the extension plate 103a in the direction perpendicular to the axial direction is larger than a width of the middle shaft 103 in the direction perpendicular to the axial direction, so that the middle shaft 103 is prevented from being detached from the housing 101.

With continued reference to fig. 1 and 2, the frame 200 includes a bracket 201, a connecting rod 202, and a bracket ring 203. One end of the support 201 is rotatably connected with the energy storage structure 100, the other end of the support 201 extends in the direction perpendicular to the axial direction and is connected with one end of the supporting ring 203, one end of the connecting rod 202 is rotatably connected with the middle area of the support 201, the other end of the connecting rod is rotatably connected with the extension plate 103a, that is, the two supports 201 of the frame 200 are respectively connected with two ends of the extension plate 103 a.

In this embodiment, the two support rings 203 are semicircular rings, and the two support rings 203 are disposed in parallel for the legs of the human body to pass through. And, be provided with the mounting groove on the filler ring 203 inner wall, install the sponge in the mounting groove, filler ring 203 passes through the contact of sponge and human shank to the travelling comfort has been improved.

With continued reference to fig. 3 and 4, the labor saving mechanism further includes a locking structure 104. The locking structure 104 is integrally fixed on the casing 101, the locking structure 104 includes a locking lever 104a and a second spring 104c, one end of the locking lever 104a is provided with a hook 104b, the other end is fixed on the casing 101 through the second spring 104c to serve as a pressing end, and the middle area of the locking lever 104a is rotatably connected with the casing 101; the outer wall of the inner cylinder 102b has a step surface, and in a natural state, the second spring 104c forces the end of the hook 104b to press the outer wall of the inner cylinder 102 b. When the first spring 105 is compressed, the inner cylinder 102b starts to move until the hook 104b catches the step surface, the inner cylinder 102b is locked, and the first spring 105 cannot be compressed continuously; when one end (pressing end) of the locking rod 104a corresponding to the second spring 104c is pressed, the hook 104b tilts in a direction away from the housing 101 to disengage from the step surface, the inner cylinder 102b is unlocked, and at this time, the first spring 105 can restore to deform to force the inner cylinder 102b to reset.

In this embodiment, the middle region of the bracket 201 is a region between two ends of the bracket 201, and/or the middle region of the locking rod 104a is a region between two ends of the locking rod 104 a.

With continued reference to fig. 3 and 5, the legs of the human body are inserted through the two rings 203 and fixed, and the support 201 is attached to the sides of the legs. When the human body stands, the support 201 is perpendicular to the axial direction of the energy storage structure 100; when the human body squats, the distance between the two support rings 203 needs to be close, so that the support 201 rotates around the axial direction of the energy storage structure 100 and the central shaft 103 is forced to move along the axial direction. When the central shaft 103 moves until the protrusion 103b contacts the inner wall of the cavity Q, the inner cylinder 102b moves relative to the outer cylinder 102a under the driving of the central shaft 103, and presses the first spring 105, so that the first spring 105 stores elastic potential energy. When the inner cylinder 102b continues to move until the hook 104b blocks the step surface, the inner cylinder 102b is locked, so that the risk of muscle strain caused by rapid reset of the inner cylinder 102b under the action of the elastic force of the first spring 105 when the first spring 105 stores more energy can be avoided. When the human body is ready to stand, the pressing end of the locking rod 104a is pressed down after sufficient preparation is made, the inner cylinder 102b is unlocked, the middle shaft 103 moves reversely under the action of the elastic force of the first spring 105 so as to reset the inner cylinder 102b, and at the moment, the elastic potential energy stored by the first spring 105 is converted into kinetic energy to push the human body to rise, so that the human body is assisted to stand up. Because the energy exchange part of the labor-saving mechanical device in the embodiment is of a pure mechanical structure, the energy-saving mechanical device is safer and more stable in relative electromechanical combination, and is easy to disassemble and maintain when problems occur.

Optionally, the length of the cavity Q in the axial direction is greater than 6 cm, and the inner cylinder 102b does not move normally when the human body is walking normally, so that the normal walking of the human body is not affected.

Further, a GPS locator (not shown) is disposed in the housing 101, and the GPS locator is used for sending location information of the labor-saving mechanical device to a receiver (for example, a mobile terminal such as a mobile phone) in real time. The GPS positioner mainly applies GPS technology and communication technology, realizes the connection of a GPS module and an SIM808 module through a single chip microcomputer, processes data of the two modules by serial port communication, realizes the acquisition of positioning information, and then transmits the acquired positioning information to a corresponding receiver through the SIM808 module, thereby realizing remote positioning.

It can be understood that the SIM808 is a quad-band module, which is globally available, and further includes interfaces such as TTL level interface and serial port. The functions of sending short messages, making calls, GPRS data transmission, GPS positioning and the like can be realized. Based on this, the main chip of the GPS locator selects the STM32F10x series singlechip minimum core board. The selected single chip microcomputer and the GPS module jointly form the GPS positioner. The STM32 singlechip processes data with the GPS module through the serial port, extracts the positioning data in the information that the GPS module transmitted, then shows on LCD liquid crystal display. The positioning information of the GPS module can also be transmitted into the SIM808 module through the serial port of the singlechip, the short message is edited through the SIM808 module, and the positioning information is sent to the corresponding receiver in a short message mode.

Specifically, after the labor-saving mechanical device is worn by a human body, the SIM808 short message module starts to work, when an emergency occurs on the road, a buzzer on the STM32 single-chip microcomputer starts to give an alarm to attract the attention and rescue of passersby, the SIM808 module can acquire the current geographic position coordinate of the human body in real time and send the coordinate to a specified receiver, and the current position of the old can be quickly determined through the positioning coordinate to implement the rescue.

In summary, the labor-saving mechanical device provided by the invention comprises an energy storage structure and two frames, wherein the two frames are symmetrically arranged along the center of the energy storage structure; the energy storage structure comprises a shell, a sleeve and a middle shaft, wherein the sleeve is arranged in the shell and comprises an inner cylinder and an outer cylinder which can move along the axial direction and are arranged in a nested manner, the inner cylinder is provided with a cavity, the middle shaft penetrates through the sleeve along the axial direction, two ends of the middle shaft extend out of the shell, a part of the middle shaft, which is positioned in the cavity, is provided with a bulge, a first spring is also arranged in the outer cylinder, and two ends of the first spring are respectively connected with the inner cylinder and the shell; the frame comprises a support, a connecting rod and a supporting ring, one end of the support is rotatably connected with the energy storage structure, the other end of the support is connected with one end of the supporting ring, one end of the connecting rod is rotatably connected with the middle area of the support, and the other end of the connecting rod is connected with one end of the middle shaft; when the distance between the two support rings is changed, the middle shaft moves along the axial direction, so that the first spring is compressed or reset. The invention can convert the gravitational potential energy of the human body when squatting down into the elastic potential energy of the first spring for storage, when the human body tends to move upwards, the elastic potential energy of the first spring is released to push the human body to ascend, thereby helping the human body to stand normally, and the invention is particularly suitable for the old with inconvenient leg movement, the disabled leg or the person with insufficient leg strength to use, and the energy exchange part of the invention is of a pure mechanical structure, is safer and more stable relative to the combination with the electromechanics, and is easy to disassemble and maintain when problems occur.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A labor-saving mechanical device is characterized by comprising an energy storage structure and two frames, wherein the two frames are symmetrically arranged along the center of the energy storage structure;

when the distance between the two supporting rings is changed, the middle shaft moves along the axial direction so as to compress or reset the first spring;

the locking structure comprises a locking rod and a second spring, a clamping hook is arranged at one end of the locking rod, the other end of the locking rod is fixed on the shell through the second spring, and the middle area of the locking rod is rotationally connected with the shell;

the outer wall of the inner cylinder is provided with a step surface, the clamping hook presses the outer wall of the inner cylinder in a natural state, when the inner cylinder moves to the position where the clamping hook clamps the step surface, the inner cylinder is locked, when one end of the locking rod corresponding to the second spring is pressed, the clamping hook is separated from the step surface, and the inner cylinder is unlocked;

one end of the middle shaft, which is connected with the connecting rods, is provided with an extension plate, the width of the extension plate in the direction perpendicular to the axial direction is larger than that of the middle shaft in the direction perpendicular to the axial direction, and the two connecting rods are rotatably connected with the extension plate.

2. The labor saving mechanism of claim 1, wherein the central region of the bracket is the region between the ends of the bracket and/or the central region of the locking lever is the region between the ends of the locking lever.

3. The power saving mechanism of claim 1 wherein the inner barrel has a length in the axial direction that is less than the length of the outer barrel in the axial direction.

4. The labor-saving mechanism of claim 1, wherein the cavity has a length in the axial direction greater than 6 cm.

5. The labor-saving mechanical device as claimed in claim 1, wherein the support rings are semicircular rings, and the two support rings are arranged in parallel.

6. The labor-saving mechanical device as claimed in claim 1, wherein the inner wall of the supporting ring is provided with an installation groove, and a sponge is installed in the installation groove.

7. The labor-saving mechanical device of claim 1, further comprising a GPS locator disposed within the housing, the GPS locator being configured to send location information of the labor-saving mechanical device to a receiver in real time.