CN107822792B

CN107822792B - Follow-up section bar and follow-up support for wheelchair and follow-up mechanism

Info

Publication number: CN107822792B
Application number: CN201711091861.5A
Authority: CN
Inventors: 尹琨; 李鹏; 柯旭; 费凯成; 徐荣; 叶华雷
Original assignee: Nanjing Kangni Mechanical and Electrical Co Ltd
Current assignee: Nanjing Kangni Mechanical and Electrical Co Ltd
Priority date: 2017-11-08
Filing date: 2017-11-08
Publication date: 2023-07-07
Anticipated expiration: 2037-11-08
Also published as: CN107822792A

Abstract

The invention discloses a follow-up section bar, a follow-up bracket and a follow-up mechanism for a wheelchair, wherein the follow-up section bar comprises an upper end plate, a containing cavity, a positioning rib plate, a guide rib, a connecting shaft hole and a swinging shaft hole, wherein the upper end plate is arranged along the length direction of the section bar; the positioning rib plate is at least provided with a positioning plane parallel to the upper end plate, and divides the accommodating cavity into an upper accommodating cavity and a lower accommodating cavity which are distributed up and down, and at least one group of guide ribs are arranged on one side of the lower accommodating cavity to divide a side accommodating cavity; the group of guide ribs consists of an upper guide rib and a lower guide rib which are arranged in parallel up and down and are mutually spaced, and extend from the lower end surface of the positioning rib plate and the corresponding cavity wall surface of the accommodating cavity respectively; the connecting shaft hole is arranged at one side of the upper accommodating cavity; the swing shaft hole is arranged at the lower end of the accommodating cavity. The follow-up support and the follow-up mechanism are prepared from the intercepted follow-up profile. The follow-up section bar of the invention is convenient for simultaneously placing the electric rotating mechanism and the swinging mechanism.

Description

Follow-up section bar and follow-up support for wheelchair and follow-up mechanism

Technical Field

The invention relates to a wheelchair, in particular to a follow-up device for the wheelchair.

Background

The wheelchair is used as a riding tool for disabled limbs and old people, and brings certain convenience. The common wheelchair is generally composed of an upper seat and a lower chassis with a walking function. The existing improvement of the wheelchair is mainly to increase the auxiliary functions of the wheelchair, such as a self-balancing function, a seat swinging function, a rotating function and the like, but the increase of each function is required to increase the volume and the dead weight of the wheelchair by adding corresponding functional components, if a multifunctional wheelchair is required to be developed, the defects of large volume, overlarge dead weight and the like after the functional components are assembled are difficult to solve.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a follow-up section bar which is convenient for simultaneously placing an electric rotating mechanism and a swinging mechanism.

In order to achieve the above purpose, the invention provides a follow-up section bar for a wheelchair, which comprises an upper end plate arranged along the length direction of the section bar, a containing cavity arranged below the upper end plate, a positioning rib plate, a guide rib, a connecting shaft hole and a swinging shaft hole; the positioning rib plate is at least provided with a positioning plane parallel to the upper end plate, and divides the accommodating cavity into an upper accommodating cavity and a lower accommodating cavity which are distributed up and down, and at least one group of guide ribs are arranged on one side of the lower accommodating cavity to divide a side accommodating cavity; the group of guide ribs consists of an upper guide rib and a lower guide rib which are arranged in parallel up and down and are mutually spaced, and extend from the lower end surface of the positioning rib plate and the corresponding cavity wall surface of the accommodating cavity respectively; the connecting shaft hole is arranged at one side of the upper accommodating cavity; the swing shaft hole is arranged at the lower end of the accommodating cavity. The electric rotating motor is placed through the side accommodating cavity, and the transmission mechanism is placed through a gap between the upper guide rib and the lower guide rib, so that the electric rotating mechanism can be effectively placed in the follow-up section bar without occupying the space of the wheelchair. Meanwhile, in the subsequent processing, the support and the positioning of the upper rotating body can be carried out through the positioning rib plate.

Further, a vertical reinforcing rib plate is arranged in the upper accommodating cavity along the length direction. And the strength of the profile is increased through the vertical reinforcing rib plates.

Further, two sides of the lower accommodating cavity are respectively provided with a group of guide ribs; two vertical reinforcing rib plates are symmetrically arranged in the upper accommodating cavity along the length direction and respectively extend downwards to form upper guide ribs on two sides of the accommodating cavity.

Further, a horizontal reinforcing rib plate is arranged in the middle cavity of the lower accommodating cavity along the length direction, the cavity is divided into a middle accommodating cavity and a bottom accommodating cavity which are distributed up and down, and a vertical reinforcing rib plate is arranged in the middle accommodating cavity along the length direction. The strength of the section bar is further improved, meanwhile, the middle position accommodating cavity is adopted to facilitate the gear on the rotating shaft below the seat to be inserted into the middle position accommodating cavity for rotation transmission, and the bottom position accommodating cavity facilitates the insertion of the positioning pin for axial limiting of the rotating shaft during subsequent processing.

Further, the swing shaft hole is arranged at the center of the lower end of the accommodating cavity.

Further, the two sides of the bottom of the lower accommodating cavity are respectively provided with a positioning rib, and the plane of the lower end of the positioning rib is coplanar with the outer side face of the wall of the lower end of the swing shaft hole. Through this design, conveniently place the section bar firmly on table surface and carry out the assembly of part. Meanwhile, when the profile is only installed as a rotating mechanism and does not have a swinging function, the profile is convenient to install and position through a lower end plane.

Further, the two sides of the upper accommodating cavity are symmetrically provided with connecting shaft holes along the length direction. The profile adopts a symmetrical structure, and is convenient to process.

Further, forming holes are formed in the two sides of the accommodating cavity along the length direction and are positioned between the connecting shaft hole and the upper accommodating cavity at positions corresponding to the heights of the connecting shaft holes. The forming holes are used as structural holes, so that the wall thickness of the connecting shaft hole and the wall thickness of the accommodating cavity are basically equal, materials are saved, and the rigidity of the section bar can be enhanced.

The invention also provides a follow-up bracket prepared by adopting the follow-up profile, wherein the follow-up bracket is provided with a supporting hole on the upper end plate of the cut follow-up profile; a connecting notch is arranged on one side of the upper end plate and is communicated with the connecting shaft hole; the positioning rib plate is provided with a gear hole which is positioned below the supporting hole. And an electric push rod is arranged through the connecting notch, so that the follow-up bracket swings. Meanwhile, a gear on a rotating shaft at the lower part of the seat through the gear Kong Fangbian extends into the middle position accommodating cavity through a gear hole.

Further, the bottom of the follow-up bracket is provided with a rotating shaft hole which is positioned below the gear hole. The multi-core plug-in unit arranged on the lower rotating shaft of the seat is electrically connected with the multi-core plug-in unit correspondingly arranged at the bottom of the follow-up bracket after the rotating shaft below the seat is conveniently extended.

Further, two sides of the lower accommodating cavity are symmetrically provided with fixing pin holes; the height of the fixing pin hole is below the gear hole. Through setting up the fixed pin in fixed pinhole department, realize inserting the axial spacing that holds intracavity pivot.

Further, the upper end plate is provided with a locating pin seat mounting hole. The locating pin is conveniently installed through the locating pin seat installation hole, and the locating function under the non-rotating state is achieved for the seat.

Further, a control motor proximity switch mounting hole is formed in the position, corresponding to the positioning pin seat mounting hole, of the positioning rib plate. And the proximity switch of the motor is convenient to install and control.

Furthermore, a gyroscope mounting hole is arranged on the upper end plate or the positioning rib plate. And the installation of the gyroscope is convenient.

Further, the support hole is provided at the center of the upper end plate.

Further, two direction judging proximity switch mounting holes are formed in the upper end plate and symmetrically arranged on two sides of the supporting hole.

Further, two rotary positioning pin mounting holes are formed in the upper end plate and symmetrically arranged on two sides of the supporting hole.

Further, a self-balancing sensor mounting hole is formed in the hole wall of the lower end of one side of the lower accommodating cavity.

The invention also provides a follow-up mechanism prepared by adopting the follow-up bracket, and the follow-up mechanism is arranged between the upper seat and the lower chassis of the wheelchair; the device also comprises a swinging shaft, a connecting shaft, an electric rotating mechanism, an electric push rod and a supporting sleeve; the support sleeve is arranged in the bearing hole of the follow-up bracket, and the rotating body correspondingly arranged on the rotating shaft below the seat is inserted in the support sleeve; the swinging shaft is arranged in the swinging shaft hole, and the follow-up mechanism is hinged with the lower chassis through the swinging shaft; the connecting shaft is arranged in the connecting shaft hole; the lower end of the electric push rod is hinged with the lower chassis, the upper end of the electric push rod is provided with a connecting hole, and the electric push rod is sleeved on the connecting shaft through the connecting hole and is positioned in a connecting notch of the follow-up bracket; the electric rotating mechanism comprises a driving motor, a screw, a nut and a rack; the driving motor is arranged in the side accommodating cavity; the rack is arranged between the upper guide rib and the lower guide rib; the screw is connected to the rotating shaft of the driving motor; the nut is spirally connected with the screw rod and is connected with the rack; the rack is meshed with a gear correspondingly arranged on a rotating shaft below the seat. Through locating electric rotating mechanism down hold the intracavity, saved the space, when increasing the electronic rotation function of wheelchair, need not additionally to increase the volume.

Further, the bottom of the follow-up bracket is provided with a rotating shaft hole which is positioned below the gear hole; the bottom of the follow-up bracket is fixedly provided with a multi-core socket or a multi-core plug, is positioned below the supporting hole and is in electric connection with the multi-core plug or the multi-core socket which is correspondingly arranged on the rotating shaft below the seat and extends out of the rotating shaft hole in a plugging manner. The multi-core plug and the multi-core socket are electrically connected, so that the seat and the follow-up mechanism are mechanically disassembled and simultaneously are quickly and electrically connected and disassembled, the phenomenon that the electric signal wire is easy to twist and wind due to the rotation of the seat is avoided, the wheelchair is in a detachable modular design, and the wheelchair is convenient to carry, transport and maintain.

Further, the multi-core plug at least comprises a plug body and a plurality of first electric connection terminals which are axially arranged along the plug body and mutually insulated; the multi-core socket at least comprises a socket body and a plurality of second electric connection terminals which are axially arranged along the socket body and mutually insulated, and when the multi-core plug and the multi-core socket are mutually inserted, the first electric connection terminals and the second electric connection terminals on the same axial position are electrically connected in a one-to-one correspondence mode.

Further, two sides of the lower accommodating cavity of the follow-up bracket are symmetrically provided with fixing pin holes; the height of the fixing pin hole is positioned below the gear hole; the follow-up mechanism also comprises two fixing pins symmetrically arranged at the fixing pin holes at two sides of the lower accommodating cavity; the fixed pin stretches into the bottom containing cavity of the lower containing cavity and is inserted into the clamping groove correspondingly arranged below the upper gear of the rotating shaft below the seat.

Further, the fixing pin is a plug pin, preferably an elastic plug pin.

Further, the follower mechanism also comprises an elastic locating pin and a locating pin seat; the positioning pin seat is fixed on the upper end plate of the follow-up bracket; the elastic locating pin can be elastically moved up and down and is arranged on the locating pin seat. Static fixation of the upper seat is achieved by means of the locating pins.

Further, the elastic locating pin comprises a locating pin, a spring retainer ring and a spring, wherein the spring retainer ring is clamped on the locating pin, the spring is arranged in the locating pin seat and sleeved with the locating pin, and the free end of the spring retainer ring is abutted against the spring retainer ring.

Once in, the follow-up mechanism also comprises a driving motor controller and a control motor proximity switch; the driving motor controller is arranged in the accommodating cavity of the follow-up bracket; the control motor proximity switch is arranged on the positioning rib plate and under the elastic positioning pin, and when the positioning pin completely enters the positioning pin seat, the lower end of the positioning pin triggers the control motor proximity switch; when the locating pin is reinserted into a pin hole correspondingly arranged at the bottom of the seat, the lower end of the locating pin is separated from the proximity switch of the control motor; the driving motor controller is electrically connected with the control motor proximity switch and the driving motor.

Further, the follower mechanism also comprises a gyroscope; the gyroscope is arranged on the follow-up bracket, and is preferably arranged on the upper end plate or the positioning rib plate. The horizontal state of the seat is detected through the gyroscope, so that a self-balancing function is realized.

Further, two rotary positioning pins are symmetrically arranged on the upper end plate of the follow-up bracket along the supporting hole. And the seat is positioned by rotating the positioning pin to rotate 180 degrees.

Further, the following mechanism also comprises an azimuth judging proximity switch which is symmetrically arranged at two sides of the upper supporting hole of the upper end plate. The seat front position and the rotated rear position state are judged through the direction judging proximity switch, so that the seat walking control is effectively performed.

Further, the follow-up mechanism also comprises a self-balancing sensor which is arranged at the outer hole wall at one side of the lower accommodating cavity. The seat swing limit position is defined by a self-balancing sensor.

Compared with the prior art, the invention has the following advantages:

1. the follow-up bracket is designed into a profile structure, so that the machining amount and the assembly workload are reduced, the material consumption is reduced, and the cost can be reduced; meanwhile, the section bar can be intercepted according to the length requirements of different types of wheelchair vehicles, and the requirement of mass production of the wheelchair vehicles of different types is met.

2. The electric rotating mechanism is arranged in the follow-up bracket, so that the internal space of the wheelchair is effectively utilized, the electric rotating function of the seat is increased while the seat swinging or self-balancing function is realized, and the space of the wheelchair is not additionally occupied.

3. The follow-up mechanism is arranged in a plugging manner with the seat, so that the wheelchair is convenient to assemble and disassemble, and meanwhile, the multi-core plug-in unit is used for carrying out electric connection, so that the rapid electric connection and disassembly can be realized, the phenomenon that the electric signal wire is easy to twist and wind due to the rotation of the seat is avoided, and the wheelchair is in a detachable modularized design, so that the wheelchair is convenient to carry, transport and maintain.

Drawings

Fig. 1 is a schematic structural view of a follow-up profile in embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of a follower support in embodiment 1 of the present invention;

FIG. 3 is a top view of the follower support of FIG. 2;

FIG. 4 is a schematic structural diagram of a follower mechanism in embodiment 1 of the present invention;

FIG. 5 is a schematic view of the electric rotating mechanism of FIG. 4;

fig. 6 is a schematic structural view of a follow-up profile in embodiment 2 of the present invention;

FIG. 7 is a schematic structural view of a follower support according to embodiment 2 of the present invention;

FIG. 8 is a top view of the follower support of FIG. 7;

FIG. 9 is a schematic structural diagram of a follower mechanism in embodiment 2 of the present invention;

FIG. 10 is a schematic view of the structure of the elastic locating pin in the locating pin holder of FIG. 9;

FIG. 11 is a schematic illustration of the attachment of the follower mechanism to the upper seat and lower chassis of FIG. 9;

FIG. 12 is a cross-sectional view of FIG. 11;

fig. 13 is a schematic structural view of the multi-core plug and the multi-core socket in fig. 12 when they are plugged into each other.

In the figure, 1-upper end plate, 2-upper accommodating cavity, 3-lower accommodating cavity, 4-guide rib, 41-upper guide rib, 42-lower guide rib, 5-connecting shaft hole, 6-swinging shaft hole, 7-positioning rib plate, 8-electric rotating mechanism, 9-electric push rod, 10-rotating shaft, 101-rotating body, 102-gear, 103-chassis, 104-positioning pin seat, 1041-positioning pin, 1042-spring retainer ring, 1043-compression spring, 105-control motor proximity switch, 106-azimuth judgment proximity switch, 107-rotating positioning pin, 108-self-balancing sensor, 109-fixed pin, 110-multi-core socket, 1101-second electric connecting wire, 1102-second electric connecting terminal, 1103-spring, 1104-adjusting nut, 1105-lead hole slot, 1106-multicore socket body, 1107-plug hole, 1108-terminal hole, 111-multicore plug, 1111-first electric connection wire, 1112-first electric connection terminal, 1113-insulating ring, 1114-plug body, 1115-lead hole, 11-supporting hole, 12-connecting notch, 13-supporting sleeve, 14-locating pin seat mounting hole, 15-control motor proximity switch mounting hole, 16-orientation judgment proximity switch mounting hole, 17-rotation locating pin mounting hole, 18-driving motor controller, 21-vertical reinforcing rib plate, 22-forming hole, 31-side accommodating cavity, 32-middle accommodating cavity, 33-bottom accommodating cavity, 34-locating rib, the horizontal reinforcing rib plate comprises a horizontal reinforcing rib plate, a 36-fixing pin mounting hole, a 51-connecting shaft, a 61-swinging shaft, a 71-gear hole, a 81-driving motor, a 82-motor rotating shaft, a 83-screw, a 84-nut and a 85-rack.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1, the follow-up profile of the invention comprises an upper end plate 1 arranged along the length direction of the profile, a containing cavity arranged below the upper end plate 1, a positioning rib plate 7, a guide rib, a connecting shaft hole 5 and a swinging shaft hole 6. The positioning rib plate 7 is at least provided with a positioning plane parallel to the upper end plate 1, and divides the accommodating cavity into an upper accommodating cavity 2 and a lower accommodating cavity 3 which are distributed up and down, and at least one group of guide ribs are arranged on one side of the lower accommodating cavity 3 to divide a side accommodating cavity 31 for accommodating a motor. The guide ribs consist of an upper guide rib 41 and a lower guide rib 42 which are arranged in parallel up and down and are mutually spaced, and extend from the lower end face of the positioning rib plate 7 and the corresponding cavity wall face of the lower accommodating cavity 3 respectively. The connecting shaft hole 5 is arranged on one side of the upper accommodating cavity along the length direction of the section bar. The swing shaft hole 6 is arranged at the center of the lower end of the lower accommodating cavity 3 along the length direction of the section bar. And the bottom cavity walls on two sides of the lower accommodating cavity 3 are coplanar with the bottom hole walls of the swing shaft hole 6, so that the lower accommodating cavity is conveniently placed on a workbench surface for subsequent processing and part installation.

As shown in fig. 2 and 3, the follower bracket of the invention intercepts follower section bars according to the length requirements of different types of wheelchair vehicles, and a supporting hole 11 is processed at the center of the upper end plate 1 of the intercepted follower section bars, and a connecting notch 12 penetrating through the connecting shaft hole 5 is processed at one side of the upper end plate 1 with the connecting shaft hole 5. And a gear hole 71 is processed on the positioning rib plate 7 at a position opposite to the supporting hole 11.

As shown in fig. 4, the follower mechanism of the present invention is mounted on a follower bracket, and includes a support sleeve 13, an electric rotating mechanism 8, a swinging shaft 61, a connecting shaft 51 and an electric push rod 9. The supporting sleeve 13 is arranged in the supporting hole 11 of the follow-up bracket. Referring to fig. 5, the swing shafts 61 are two, one ends of which are respectively provided at both sides in the swing shaft hole 6, and the other ends of which are respectively fixed at corresponding positions of the lower chassis. The connection shaft 51 is provided in the connection shaft hole 5. The lower end of the electric push rod 9 is hinged with the lower chassis, the upper end is provided with a connecting hole, and the electric push rod is sleeved on the connecting shaft 51 through the connecting hole and is positioned in the connecting notch 12 of the follow-up bracket. The electric rotating mechanism 8 is arranged in the lower accommodating cavity 3, and is combined with fig. 4 and 5, the electric rotating mechanism 8 comprises a driving motor 81, a screw rod 83, a nut 84 and a rack 85, the driving motor 81 is arranged in the side accommodating cavity 31, the rack 85 is arranged between the upper guide rib 41 and the lower guide rib 42, the screw rod 83 is connected to the motor rotating shaft 82, the nut 84 is spirally connected with the screw rod 83 and is connected with the rack 85, and the rack is meshed with a gear 102 correspondingly arranged on the rotating shaft 10 below the seat.

When the follower is installed on the wheelchair, the follower is hinged with the chassis 103 (the functional components such as a travelling mechanism, a lifting mechanism and the like can be arranged below the chassis according to the requirements of different wheelchairs) through the swinging shaft 61, and meanwhile, the rotating body 101 correspondingly arranged on the rotating shaft 10 below the chair is inserted into the supporting sleeve 13.

When in use, the electric push rod 9 can push the follow-up support, thereby driving the upper seat to swing and realizing the function similar to a leisure chair. The driving motor 81 is started to drive the nut 84 to rotate, so that the rack 85 is controlled to reciprocate, the gear 102 drives the rotating shaft to rotate forward or backward, so that the seat is controlled to rotate forward or backward, and the electric rotating function of the wheelchair is realized.

Example 2

As shown in fig. 6, the follower profile of the present invention comprises an upper end plate 1 arranged along the length direction of the profile, a receiving cavity arranged below the upper end plate 1, a positioning rib plate 7, a guide rib, a connecting shaft hole 5, a forming hole 22 and a swinging shaft hole 6. The positioning rib plate 7 is at least provided with a positioning plane parallel to the upper end plate 1, and divides the accommodating cavity into an upper accommodating cavity 2 and a lower accommodating cavity 3 which are distributed up and down, the two groups of guide ribs 4 are arranged on two sides of the lower accommodating cavity 3, two side accommodating cavities 31 and a middle cavity are divided, and one side accommodating cavity 31 is used for accommodating a motor. A horizontal reinforcing rib plate 35 is arranged in the middle cavity of the lower accommodating cavity 31 along the length direction, the cavity is divided into a middle accommodating cavity 32 and a bottom accommodating cavity 33 which are distributed up and down, and a vertical reinforcing rib plate 21 is arranged in the middle accommodating cavity 32 along the length direction. Each group of guide ribs consists of an upper guide rib 41 and a lower guide rib 42 which are arranged in parallel up and down and are spaced from each other. Two vertical reinforcing rib plates 21 are symmetrically arranged in the upper accommodating cavity 2 along the length direction and respectively extend downwards to form upper guide ribs 41 on two sides of the accommodating cavity, and lower guide ribs 42 extend from the corresponding cavity wall surface of the lower accommodating cavity 3. The connecting shaft holes 5 are symmetrically arranged on two sides of the upper accommodating cavity 2 along the length direction of the profile. The molding hole 22 is located between the connection shaft hole 5 and the upper receiving chamber 2 at a position corresponding to the height of the connection shaft hole 5. The swing shaft hole 6 is provided below the bottom accommodating chamber 33 in the longitudinal direction of the profile. The bottom of the two side accommodating cavities 31 of the lower accommodating cavity 3 is provided with a positioning rib 34, and the plane of the lower end of the positioning rib 34 is coplanar with the outer side face of the wall of the lower end of the swing shaft hole 6, so that the positioning rib is conveniently placed on a workbench surface for subsequent processing and part installation.

Referring to fig. 7 and 8, the follower support of the present invention intercepts follower profiles according to the length requirements of different types of wheelchair vehicles, and a connecting notch 12 penetrating the connecting shaft hole 5 is processed on one side of the upper end plate 1 of the intercepted follower profile, which is provided with the connecting shaft hole 5. The central position of the upper end plate 1 is provided with a supporting hole 11, the aperture size of the supporting hole 11 is larger than the distance between the two vertical reinforcing rib plates 21 in the upper accommodating cavity 2, the supporting hole 11 has a certain depth, a notch is formed at the corresponding position of the two vertical reinforcing rib plates 21, a positioning surface is formed at the bottom surface of the notch, and a structure fixed in the supporting hole 11 is supported. A gear hole 71 is formed in the positioning rib 7 at a position facing the support hole 11. The gear hole 71 penetrates through the vertical reinforcing rib plate 21 arranged in the middle position accommodating cavity 32 and is communicated with a rotating shaft hole correspondingly arranged at the bottom center of the bottom position accommodating cavity 33 and the bottom center of the swinging shaft hole 6. The side walls of the lower end of the lower accommodating cavity are respectively provided with a fixed pin mounting hole 36. And a gyroscope mounting hole (not shown) is also formed in the follow-up section bar and can be arranged on the upper end plate 1 or the positioning rib plate 7.

As shown in fig. 8, the follower bracket of the present invention is provided with a locating pin seat mounting hole 14 on one side of the upper end plate 1 of the cut follower profile. Two direction judging proximity switch mounting holes 16 are arranged at symmetrical positions on two sides of the supporting hole 11. Two rotary positioning pin mounting holes 17 are arranged at symmetrical positions on two sides of the supporting hole 11.

As shown in fig. 7, a control motor proximity switch mounting hole 15 is arranged on the positioning rib plate 7 and opposite to the positioning pin seat mounting hole 14.

As shown in fig. 9 and 11, the follower mechanism of the present invention is mounted on a follower bracket, and includes a support sleeve 13, an electric rotating mechanism 8, a swinging shaft 61, a connecting shaft 51, an electric push rod 9, a positioning pin seat 104, a control motor proximity switch 105, an orientation judgment proximity switch 106, a gyroscope, a rotation positioning pin 107, a self-balancing sensor 108, a fixing pin 109, and a multicore socket 110. The supporting sleeve 13 is arranged in the supporting hole 11 of the follow-up bracket. Referring to fig. 10, the dowel seat 104 is mounted in the dowel seat mounting hole 14, and the elastic dowel pin is elastically movable up and down and provided on the dowel seat 104. The elastic locating pin comprises a locating pin 1041, a spring retainer 1042 and a compression spring 1043, wherein the spring retainer 1042 is clamped on the locating pin 1041, the compression spring 1043 is arranged in the locating pin seat 104 and sleeved with the locating pin 1041, and the free end of the compression spring 1043 is abutted against the spring retainer 1042. The control motor proximity switch 105 is arranged in the control motor proximity switch mounting hole 15, and the sensing surface is positioned right below the positioning pin seat 104; when the locating pin 1041 completely enters the locating pin seat 104, the lower end of the locating pin 1041 triggers and controls the motor proximity switch 105; when the positioning pin 1041 is reinserted into a pin hole provided in the seat bottom, the lower end of the positioning pin 1041 is separated from the control motor proximity switch 105. The azimuth judgment proximity switches 106 are provided in two, and are respectively installed in the corresponding azimuth judgment proximity switch installation holes 16. The number of the rotation positioning pins 107 is two, and the rotation positioning pins are respectively installed in the corresponding rotation positioning pin installation holes 17. The gyroscope is mounted in a gyroscope mounting hole (not shown), preferably on the positioning rib plate 7 and in the upper accommodating cavity 2. The two fixed swing shafts 61 are arranged, one ends of the two fixed swing shafts are respectively arranged on two sides in the swing shaft hole 6, and the other ends of the two fixed swing shafts are respectively fixed at corresponding positions of the lower chassis. The connection shaft 51 is provided in the connection shaft hole 5. The lower end of the electric push rod 9 is hinged with the lower chassis, the upper end is provided with a connecting hole, and the electric push rod is sleeved on the connecting shaft 51 through the connecting hole and is positioned in the connecting notch 12 of the follow-up bracket. The structure of the follow-up motor adopted by the electric push rod 9 is the same as that of the published Chinese patent CN205212628U. The electric rotating mechanism 8 and the driving motor controller 18 are respectively disposed in the lower two side accommodation chambers 31, wherein the structure and the disposition of the electric rotating mechanism 8 are the same as those of embodiment 1. The self-balancing sensor 108 is fixed to one side of the side accommodating chamber 31. The number of the fixing pins 109 is two, and the fixing pins extend into the bottom accommodating cavity 33 through the fixing pin mounting holes 36 on two sides of the lower accommodating cavity 3. The multi-core socket 110 is fixedly arranged below the hole wall of the swing shaft hole 6 and corresponds to the position of the rotating shaft hole, a plurality of first electric connection terminals which are arranged along the circumferential direction and mutually insulated are arranged on the multi-core socket 110, and after the rotating shaft below the seat sequentially passes through the supporting hole 11, the gear hole 71 and the rotating shaft hole, the first electric connection terminals on the multi-core socket 110 are electrically connected with the second electric connection terminals on the corresponding circumferential position of the multi-core plug fixed at the lower end of the rotating shaft 10.

Referring to fig. 11 and 12, when the follower mechanism of the present invention is mounted on a wheelchair, the follower mechanism is hinged to the chassis 103 (the functional components such as a travelling mechanism and a lifting mechanism may be provided under the chassis according to the needs of different wheelchairs) via a swinging shaft 61. The seat bottom is equipped with two pinholes, and two pinholes divide to be in two circumference positions department that the phase difference is 180, and locating pin 1041 of follower upper end plate department corresponds on the same circumference position of pinhole, and when the seat need not rotate, locating pin 1041 is sprung and upper end part stretches into in the pinhole that corresponds through compression spring 1043 ascending effort and carries out seat and follower fixed. Simultaneously, a rotating body 101 correspondingly arranged on a rotating shaft 10 below the seat is inserted into the supporting sleeve 13, a gear 102 arranged below the rotating body 101 penetrates through the gear hole 71 to extend into the middle position accommodating cavity 32 to be meshed with the rack 85 of the electric rotating mechanism, the bottom of the rotating shaft 10 downwards penetrates through a rotating shaft hole at the bottom of the follow-up mechanism, and a multi-core plug 111 fixed on the rotating shaft 10 is electrically inserted into a multi-core socket 110 fixed at the bottom of the follow-up mechanism. The fixing pin 109 passes through the fixing pin mounting hole 36 and extends into the bottom accommodating cavity 33, and a clamping groove (which is an annular clamping groove and is convenient for the rotation of the rotation shaft) corresponding to the lower end of the rotation shaft 10 is inserted to limit the rotation shaft 10 in the axial direction.

Referring to fig. 13, the multi-core plug 111 includes a plug body 1114, a first electrical connection terminal 1112, an insulating ring 1113, and a first electrical connection wire 1111, where the plug body 1114 is a hollow tube made of an insulating material, and a plurality of axially distributed lead holes 1115 are provided at a circumferential position of a tube wall of the hollow tube, and the lead holes are connected to a hollow cavity in the center of the hollow tube; the first electrical connection terminal 1112 and the insulating ring 1113 are respectively circular rings matched with the outer wall of the hollow tube, and are respectively made of conductive materials and insulating materials, and the outer diameter of the first electrical connection terminal 1112 is larger than that of the insulating ring 1113; the plurality of first electric connection terminals 1112 are sleeved on the plug body 1114 along the axial direction and are separated by the insulating ring 1113, each first electric connection terminal 1112 is arranged at the axial position of the corresponding lead hole 1115, one end of the first electric connection wire 1111 corresponding to each first electric connection terminal 1112 is connected with the first electric connection terminal 1112, the other end of the first electric connection wire is led into the hollow cavity of the plug body 1114 through the lead hole 1115, and the other end of the first electric connection wire is led out from the hollow cavity to be electrically connected with a remote controller arranged on the upper seat. The multi-core socket 110 is in a circular tube shape and comprises a multi-core socket body 1106, a second electric connection terminal 1102, a spring 1103, an adjusting nut 1104 and a second electric connection wire 1101; one end of the second electrical connection terminal 1102 is a small-diameter end, the other end is a large-diameter end, and the second electrical connection wire 1101 is connected to the large-diameter end; the multi-core socket body 1106 is provided with a plug hole 1107 which is matched with the outer diameter of a first electric connection terminal 1112 at the center, a plurality of terminal holes 1108 which are distributed along the axial direction are arranged at a circumferential position of the multi-core socket body 1106, the terminal holes 1108 are arranged along the radial direction of the plug hole 1107 and penetrate through the hole wall of the plug hole 1107, the aperture of the terminal holes 1108 corresponding to the inner side end of the plug hole 1107 is larger than the diameter of the small diameter end but smaller than the diameter of the large diameter end of a second electric connection terminal 1102, the hole wall of the outer side section is provided with internal threads, one end of an adjusting nut 1104 is arranged in the terminal hole 1108 by being screwed on the internal threads, the center of the adjusting nut 1104 is provided with a hole, one end of a spring 1103 is propped against the second electric connection terminal 1102, the other end of the spring 1103 is propped against the adjusting nut 1104, the second electric connection terminal 1102 is stretched towards the plug hole side under the elastic force of the spring 1103 to be electrically connected with the first electric connection terminal 1112, the mutual propping degree of the two electric connection terminals is adjusted by adjusting the screwing depth of the adjusting nut 1104, so that better electric connection is ensured. Lead hole grooves 1105 are provided at the lower end of the multi-core socket at circumferential positions corresponding to the terminal holes 1108. One end of the second electrical connection line 1101 is connected to the larger diameter end of the corresponding second electrical connection terminal 1102, and the other end is led out of the multi-core socket 110 through the hole and the lead hole slot 1105 in the center of the spring 1103 and the adjusting nut 1104, and is electrically connected to the electric controller of the follower mechanism, the electric traveling mechanism provided at the lower part, and the like.

When in use, the electric push rod 9 can push the follow-up support, thereby driving the upper seat to swing and realizing the function similar to a leisure chair. Meanwhile, the gyroscope can detect the horizontal position of the upper end plate 1, the angle between the upper end plate 1 and the chassis 103 is adjusted through the expansion and contraction of the electric push rod 9, and the horizontal state of the upper end plate 1 is kept, so that the upper seat can be kept in the horizontal state all the time when ascending and descending slopes, the falling of a user due to the descending slopes is avoided, and the comfort level of riding on the ascending and descending slopes is kept. Meanwhile, a self-balancing sensor 108 arranged on one side of the bottom of the follow-up mechanism detects the angle between the upper end plate 1 and the chassis 103, and when the inclination angle exceeds a preset value (such as 15 degrees), the electric push rod 9 stops working, and the limit position of seat swing is limited through the self-balancing sensor 108. When the locating pin 1041 completely enters the locating pin seat 104, the lower end of the locating pin 1041 triggers the control motor proximity switch 105, so that the driving motor 81 is controlled to be started, the nut 84 is driven to rotate, the rack 85 is controlled to reciprocate, the gear 102 drives the rotating shaft to rotate, the seat is controlled to rotate forward or backward, the rotating locating pin 107 is used for locating the rotating angle, the embodiment adopts 2 rotating locating pins, 180-degree rotation can be achieved, when the seat rotates 180 degrees, the locating pin 1041 is sprung up due to the upward acting force of the compression spring 1043, the upper end part of the locating pin 1041 stretches into the corresponding pin hole, the lower end of the locating pin 1041 is separated from the control motor proximity switch 105, the driving motor 81 stops working, and the seat stops rotating. Meanwhile, the direction judging proximity switches 106 on two sides sense the corresponding sensing pieces arranged at the bottom of the upper seat, the sensing pieces trigger different direction judging proximity switches 106 before and after the seat rotates, and an electric signal is sent to judge the direction of the seat, so that the walking control of the lower chassis is performed. Meanwhile, when the seat rotates, the electric connection is realized by adopting the multi-core socket and the multi-core plug, so that the winding of the electric signal wires is avoided.

When the wheelchair is required to be disassembled, the fixing pins 109 on two sides of the follow-up mechanism are pulled out, and after the locating pins 1041 are pressed down, the seat rotating shaft is pulled out, the multi-core socket 110 and the multi-core plug 111 are separated, and the mechanical connection and the electrical connection are simultaneously removed, so that the wheelchair is quick and convenient to carry, transport and maintain.

Claims

1. A follow-up profile for a wheelchair, characterized in that: the device comprises an upper end plate, a containing cavity, a positioning rib plate, a guide rib, a connecting shaft hole and a swinging shaft hole, wherein the upper end plate is arranged along the length direction of the profile; the positioning rib plate is at least provided with a positioning plane parallel to the upper end plate, and divides the accommodating cavity into an upper accommodating cavity and a lower accommodating cavity which are distributed up and down, and at least one group of guide ribs are arranged on one side of the lower accommodating cavity to divide a side accommodating cavity; the group of guide ribs consists of an upper guide rib and a lower guide rib which are arranged in parallel up and down and are mutually spaced, and extend from the lower end surface of the positioning rib plate and the corresponding cavity wall surface of the accommodating cavity respectively; the connecting shaft hole is arranged at one side of the upper accommodating cavity; the swing shaft hole is arranged at the lower end of the accommodating cavity.

2. The follower profile of claim 1, wherein: and a vertical reinforcing rib plate is arranged in the upper accommodating cavity along the length direction.

3. The follower profile of claim 2, wherein: the two sides of the lower accommodating cavity are respectively provided with the group of guide ribs; two vertical reinforcing rib plates are symmetrically arranged in the upper accommodating cavity along the length direction and respectively extend downwards to form upper guide ribs on two sides of the accommodating cavity.

4. A follow-up profile according to claim 3, characterized in that: the middle cavity of the lower accommodating cavity is internally provided with a horizontal reinforcing rib plate along the length direction, the cavity is divided into a middle accommodating cavity and a bottom accommodating cavity which are distributed up and down, and the middle accommodating cavity is internally provided with a vertical reinforcing rib plate along the length direction.

5. The follower profile of claim 4, wherein: the swing shaft hole is arranged at the center of the lower end of the accommodating cavity.

6. The follower profile of claim 4, wherein: and positioning ribs are respectively arranged on two sides of the bottom of the lower accommodating cavity, and the lower end plane of each positioning rib is coplanar with the outer side surface of the wall of the lower end hole of the swing shaft hole.

7. The follow-up profile according to claim 5, characterized in that: the two sides of the upper accommodating cavity are symmetrically provided with the connecting shaft holes along the length direction.

8. The follower profile of claim 6, wherein the follower profile comprises: the two sides of the accommodating cavity are provided with forming holes along the length direction and are positioned between the connecting shaft hole and the upper accommodating cavity at the position corresponding to the height of the connecting shaft hole.

9. A follow-up support made using the follow-up profile of any one of claims 1 to 8, characterized in that: the follow-up bracket is provided with a supporting hole on the upper end plate of the intercepted follow-up section bar; a connecting notch is formed in one side of the upper end plate and communicated with the connecting shaft hole; the positioning rib plate is provided with a gear hole which is positioned below the supporting hole.

10. The follower holder of claim 9, wherein: the bottom of the follow-up bracket is provided with a rotating shaft hole which is positioned below the gear hole.

11. The follower holder of claim 10, wherein: and fixing pin holes are symmetrically formed in two sides of the lower accommodating cavity, and the heights of the fixing pin holes are below the gear holes.

12. The follower holder of claim 11, wherein: and the upper end plate is provided with a positioning pin seat mounting hole.

13. The follower holder of claim 12, wherein: and the positioning rib plate is provided with a control motor proximity switch mounting hole corresponding to the positioning pin seat mounting hole.

14. The follower bracket of claim 13, wherein the follower bracket is made from a follower profile, and wherein: and gyroscope mounting holes are formed in the upper end plate or the positioning rib plate.

15. The follower holder of claim 14, wherein: the supporting hole is arranged at the center of the upper end plate.

16. The follower holder of claim 15, wherein: and two direction judging proximity switch mounting holes are formed in the upper end plate and symmetrically arranged on two sides of the supporting hole.

17. The follower holder of claim 16, wherein: the upper end plate is provided with two rotary positioning pin mounting holes which are symmetrically arranged on two sides of the supporting hole.

18. The follower holder of claim 17, wherein: and a self-balancing sensor mounting hole is formed in the hole wall of the lower end at one side of the lower accommodating cavity.

19. A follower prepared by using the follower support of claim 9, the follower being disposed between an upper seat and a lower chassis of a wheelchair; the method is characterized in that: the follow-up mechanism also comprises a swinging shaft, a connecting shaft, an electric rotating mechanism, an electric push rod and a supporting sleeve; the support sleeve is arranged in the supporting hole of the follow-up bracket, and the rotating body correspondingly arranged on the rotating shaft below the seat is inserted in the support sleeve; the swing shaft is arranged in the swing shaft hole, and the follow-up mechanism is hinged with the lower chassis through the swing shaft; the connecting shaft is arranged in the connecting shaft hole; the lower end of the electric push rod is hinged with the lower chassis, the upper end of the electric push rod is provided with a connecting hole, and the electric push rod is sleeved on the connecting shaft through the connecting hole and is positioned in a connecting notch of the follow-up bracket; the electric rotating mechanism comprises a driving motor, a screw, a nut and a rack; the driving motor is arranged in the side accommodating cavity; the rack is arranged between the upper guide rib and the lower guide rib; the screw is connected to the rotating shaft of the driving motor; the nut is spirally connected with the screw rod and is connected with the rack; the rack is meshed with a gear correspondingly arranged on a rotating shaft below the seat.

20. The follower mechanism of claim 19, wherein: the bottom of the follow-up bracket is provided with a rotating shaft hole which is positioned below the gear hole; the bottom of the follow-up bracket is fixedly provided with a multi-core socket or a multi-core plug, is positioned below the supporting hole and is in electric connection with the multi-core plug or the multi-core socket which is correspondingly arranged on the rotating shaft below the seat and extends out of the rotating shaft hole.

21. The follower mechanism of claim 20, wherein: the multi-core plug at least comprises a plug body and a plurality of first electric connection terminals which are axially arranged along the plug body and mutually insulated; the multi-core socket at least comprises a socket body and a plurality of second electric connection terminals which are axially arranged along the socket body and mutually insulated, and when the multi-core plug and the multi-core socket are mutually inserted, the first electric connection terminals and the second electric connection terminals on the same axial position are electrically connected in a one-to-one correspondence mode.

22. The follower mechanism of claim 21, wherein: fixing pin holes are symmetrically formed in two sides of the lower accommodating cavity of the follow-up bracket; the height of the fixing pin hole is positioned below the gear hole; the follow-up mechanism also comprises two fixing pins symmetrically arranged at the fixing pin holes at two sides of the lower accommodating cavity; the fixing pin stretches into the lower accommodating cavity and is inserted into the clamping groove correspondingly arranged on the rotating shaft below the seat.

23. The follower mechanism of claim 22, wherein: the fixing pin is a plug pin.

24. The follower mechanism of claim 23, wherein: the follow-up mechanism also comprises an elastic locating pin and a locating pin seat; the positioning pin seat is fixed on an upper end plate of the follow-up bracket; the elastic locating pin can be elastically arranged on the locating pin seat in an up-and-down moving way.

25. The follower mechanism of claim 24, wherein: the elastic locating pin consists of a locating pin, a spring retainer ring and a spring, wherein the spring retainer ring is clamped on the locating pin, the spring is arranged in a locating pin seat and sleeved with the locating pin, and the free end of the spring retainer ring is abutted against the spring retainer ring.

26. The follower mechanism of claim 25, wherein: the follow-up mechanism also comprises a driving motor controller and a control motor proximity switch; the driving motor controller is arranged in the accommodating cavity of the follow-up bracket; the control motor proximity switch is arranged on the positioning rib plate, under the elastic positioning pin, when the positioning pin completely enters the positioning pin seat, the lower end of the positioning pin triggers the control motor proximity switch; the positioning pin is reinserted into the pin hole, and the lower end of the positioning pin is separated from the control motor proximity switch; the driving motor controller is electrically connected with the control motor proximity switch and the driving motor.

27. The follower mechanism of claim 26, wherein: the follower mechanism further comprises a gyroscope; the gyroscope is arranged on the follow-up bracket.

28. The follower mechanism of claim 27, wherein: two rotary positioning pins are symmetrically arranged on the upper end plate of the follow-up bracket along the supporting hole.

29. The follower mechanism of claim 28, wherein: the following mechanism also comprises an azimuth judging proximity switch which is symmetrically arranged on two sides of the upper supporting hole of the upper end plate.

30. The follower mechanism of claim 29, wherein: the follow-up mechanism also comprises a self-balancing sensor which is arranged at the outer hole wall at one side of the lower accommodating cavity.