CN107714334B - Follow-up support and follow-up mechanism for wheelchair - Google Patents
Follow-up support and follow-up mechanism for wheelchair Download PDFInfo
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- CN107714334B CN107714334B CN201711093643.5A CN201711093643A CN107714334B CN 107714334 B CN107714334 B CN 107714334B CN 201711093643 A CN201711093643 A CN 201711093643A CN 107714334 B CN107714334 B CN 107714334B
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- Prior art keywords
- hole
- follow
- accommodating cavity
- follower
- seat
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1075—Arrangements for adjusting the seat tilting the whole seat backwards
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1056—Arrangements for adjusting the seat
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1072—Arrangements for adjusting the seat rotating the whole seat around a vertical axis
Abstract
The invention discloses a follow-up bracket and a follow-up mechanism for a wheelchair, wherein the follow-up bracket is designed into a section bar and comprises an upper end plate, a containing cavity, a swinging shaft hole and a connecting shaft hole which are arranged along the length direction of the section bar; the accommodating cavity is arranged below the upper end plate; the connecting shaft hole is arranged at one side of the accommodating cavity; the swing shaft hole is arranged at the lower end of the accommodating cavity; at least one vertical reinforcing rib plate is arranged in the accommodating cavity along the length direction; a supporting hole is arranged at the center of the upper end plate of the follow-up bracket; the upper end of the vertical reinforcing rib plate and the corresponding position of the supporting hole are provided with a notch which is communicated with the supporting hole, and the bottom surface of the notch forms a positioning surface; one side of the upper end plate is provided with a connecting notch which is communicated with the connecting shaft hole. The follow-up bracket has small volume, is convenient to mount, swings the component and the rotating component, and is convenient to mount and dismount.
Description
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. In order to increase the comfort level of the wheelchair, the existing wheelchair is improved, the self-balancing function, the rocking function similar to a leisure chair or the seat rotating function and the like are added, but the realization of the functions is realized by freely rocking and freely rotating the seat on the upper part of the wheelchair, the rotating function and the rocking function in the prior art are realized by independent components, if the functions are required to be combined, the structure is complex, the processing and the installation are inconvenient, and the occupied space is large.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a follow-up bracket which is small in size and convenient for simultaneously placing a swinging member and a rotating member.
In order to achieve the above object, the present invention provides a follower bracket for a wheelchair, which is designed as a profile, including an upper end plate, a receiving chamber, a swing shaft hole and a connection shaft hole arranged along the length direction of the profile; the accommodating cavity is arranged below the upper end plate; the connecting shaft hole is arranged at one side of the accommodating cavity; the swing shaft hole is arranged at the lower end of the accommodating cavity; at least one vertical reinforcing rib plate is arranged in the accommodating cavity along the length direction; a supporting hole is arranged at the center of the upper end plate of the follow-up bracket; the upper end of the vertical reinforcing rib plate and the corresponding position of the supporting hole are provided with a notch which is communicated with the supporting hole, and the bottom surface of the notch forms a positioning surface; one side of the upper end plate is provided with a connecting notch which is communicated with the connecting shaft hole. The swing center of the follow-up section bar is determined through the swing shaft hole, so that the follow-up section bar is utilized to realize the automatic swing of the upper seat. Meanwhile, a rotating body arranged on a rotating shaft below the seat is sleeved through the supporting hole, so that the rotating function is realized, the integral strength of the follow-up support is increased through the vertical reinforcing rib plate, and the positioning and supporting functions of the rotating body are realized.
Further, vertical reinforcing rib plates are symmetrically arranged on two sides in the accommodating cavity along the length direction, and the accommodating cavity is divided into a middle accommodating cavity and side accommodating cavities on two sides; the supporting holes are arranged at the middle positions of the vertical reinforcing rib plates at the two sides, the diameter of each supporting hole is larger than the distance between the two vertical reinforcing rib plates, and the supporting holes downwards extend to the notch positions of the vertical reinforcing rib plates.
Further, the bottom of the middle accommodating cavity is provided with a rotating shaft hole.
Furthermore, the two sides of the accommodating cavity are provided with the 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 correspond to the height of the connecting shaft hole. 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.
Further, the swing shaft hole is arranged at the center of the lower end of the accommodating cavity.
Further, the upper end plate is provided with a locating pin seat mounting hole. The installation of the locating pin is convenient through the locating pin seat installation hole.
Further, two proximity switch mounting holes are formed in the upper end plate and symmetrically arranged on two sides of the supporting hole. The proximity switch is convenient to install through the proximity switch installation hole.
Further, a self-balancing sensor mounting hole is formed in the hole wall of the lower end of one side of the accommodating cavity. And the self-balancing sensor is convenient to install.
Further, the two sides of the accommodating cavity are symmetrically provided with fixing pin holes and are communicated with the middle accommodating cavity through corresponding vertical reinforcing rib plates. Through setting up the fixed pin in fixed pinhole department, realize inserting the axial spacing that holds intracavity pivot.
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 supporting sleeve, a swinging, a connecting shaft and an electric push rod; 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, the electric push rod is sleeved on the connecting shaft through the connecting hole and is positioned in the connecting notch of the follow-up bracket.
Further, the bottom of the follow-up bracket is provided with a rotating shaft hole which is positioned below the supporting hole and is communicated with the supporting 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 rotating shaft 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, 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.
Further, the follower mechanism also comprises a gyroscope; the gyroscope is mounted on the upper end plate of the follow-up bracket. The horizontal state of the seat is detected through the gyroscope, so that a self-balancing function is realized.
Further, the follow-up mechanism also comprises a proximity switch which is symmetrically arranged at two sides of the supporting hole on the upper end plate. The state judgment of the front position and the rotated rear position of the seat is carried out through the proximity switch, so that the seat walking control is effectively carried out.
Further, the follow-up mechanism also comprises a self-balancing sensor which is arranged at the outer hole wall at one side of the accommodating cavity. The seat swing limit position is defined by installing a self-balancing sensor.
In order to realize axial limit on the rotating shaft extending into the accommodating cavity, fixing pin holes are symmetrically arranged on two sides of the accommodating cavity of the follow-up bracket; the follow-up mechanism also comprises two fixing pins which are symmetrically arranged at the fixing pin holes at two sides of the lower accommodating cavity, extend into the accommodating cavity and are inserted into clamping grooves which are correspondingly arranged on the rotating shaft below the seat.
Further, the fixing pin is a plug pin, preferably an elastic plug pin.
Or the axial limit of the rotating shaft is realized through a lower pad sleeve, and the lower pad sleeve comprises a retainer ring, a sleeve and a baffle; a retainer ring is arranged on the outer peripheral side above the sleeve, and a baffle plate is arranged on the inner side below the sleeve to form a locking groove; the lower cushion sleeve is arranged below the supporting sleeve and is clamped between the positioning surface of the notch of the vertical reinforcing rib plate and the supporting sleeve through the check ring; the lock plate is correspondingly arranged on the rotating shaft below the seat, and is inserted through the lock groove of the lower cushion sleeve, and when at least part of the lock plate rotates below the baffle, the rotating shaft is axially locked.
Compared with the prior art, the invention has the following advantages:
1. by designing the follow-up bracket as the follow-up section bar, 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 follow-up section bar is set, so that the seat swinging mechanism is convenient to install, the functions of swinging and rotating the seat are realized, the size is small, and the space of a wheelchair is not occupied excessively.
3. The follow-up mechanism can effectively realize the swinging and rotating functions of the seat, can realize the rapid disassembly function, and meanwhile, the added functional components can be arranged on the follow-up bracket, so that the space of the follow-up bracket is effectively utilized while the function of the wheelchair is added, and the volume of the wheelchair is not additionally increased.
Drawings
FIG. 1 is a schematic structural view of a follower support in embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view of the follower support of FIG. 1;
FIG. 3 is a schematic view of the structure of the vertical stiffener shown in FIG. 1;
FIG. 4 is a schematic structural diagram of a follower mechanism in embodiment 1 of the present invention;
FIG. 5 is a schematic structural view of a follower support according to embodiment 2 of the present invention;
FIG. 6 is a cross-sectional view of a follower holder in accordance with example 2 of the present invention;
FIG. 7 is a schematic view of the vertical stiffener of FIG. 5;
FIG. 8 is a top view of the follower support of FIG. 5;
FIG. 9 is a schematic structural diagram of a follower mechanism in embodiment 2 of the present invention;
FIG. 10 is an axial cross-sectional view of FIG. 9;
FIG. 11 is a schematic view of the lower mattress cover of FIG. 10;
FIG. 12 is a schematic view of the alignment pin of FIG. 9;
fig. 13 is a schematic structural view of the multi-core plug and the multi-core socket in fig. 10 when they are plugged into each other.
In the figure, the upper end plate, the 2-receiving cavity, the 3-swing shaft hole, the 4-connecting shaft hole, the 5-forming hole, the 6-electric push rod, the 7-fixing pin, the 8-rotating shaft, the 9-chassis, the 103-supporting sleeve, the 104-proximity switch, the 105-gyroscope, the 106-limiting pin, the 107-positioning pin seat, the 1071-positioning pin, the 1072-spring retainer ring, the 1073-compression spring, the 108-lower pad sleeve, the 1081-retainer ring, the 1082-sleeve, the 1083-retainer plate, the 12-connecting notch, the 13-supporting hole, the 21-vertical reinforcing rib plate, the 2101-notch, the 2102-rotating shaft hole, the 23-multi-core socket, the 231-second electric connecting wire, the 232-second electric connecting terminal, the 233-spring, the 234-adjusting nut, the 235-lead wire hole groove, the 236-socket body, the 237-inserting hole, the 238-terminal hole, the 24-self-balancing sensor, the 31-swing shaft, the 41-connecting shaft, the 81-rotating body, the 82-clamping groove, the 83-plug, the 831-first electric connecting wire, the 832-first electric connecting wire, the multi-core connector 835-insulator, the multi-core plug, the 835-core insulator, and the multi-core plug.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example 1
The follow-up bracket adopts a profile design and is combined with fig. 2, and comprises an upper end plate 1, a containing cavity 2, a swinging shaft hole 3, a forming hole 5 and a connecting shaft hole 4 which are arranged along the length direction of the profile. The accommodating cavity 2 is arranged below the upper end plate 1; the forming holes 5 are positioned at two sides of the accommodating cavity 2, and the connecting shaft holes 4 are arranged at the outer sides of the forming holes at one side. The swing shaft hole 3 is arranged at the lower end of the accommodating cavity 2. A vertical reinforcing rib plate 21 is arranged in the accommodating cavity 2 along the length direction.
The follow-up bracket of the invention intercepts section bars according to the length requirements of different types of wheelchair, as shown in figure 1, a supporting hole 13 is processed at the central position of the intercepted follow-up section bar upper end plate 1, the supporting hole has a certain depth, a notch 2101 is formed at the corresponding position of a vertical reinforcing rib plate 21, a positioning surface is formed at the bottom surface of the notch, a structure is supported and fixed in the supporting hole 13, and a rotating shaft hole 2012 is arranged below the notch and at the vertical reinforcing rib plate 21. Fixing pin holes (not shown) are formed in the cavity walls on two sides of the accommodating cavity 2 and at the height position of the rotating shaft hole 2102, as shown in fig. 3. A connection notch 12 is formed at the side of the upper end plate 1 having the connection shaft hole 4, and the connection notch 12 communicates with the connection shaft hole 4.
As shown in fig. 4, the follower mechanism of the present invention is mounted on a follower bracket, and includes a support sleeve 103, a connecting shaft 41, a swinging shaft 31, a fixing pin 7 and an electric push rod 6. The support sleeve 103 is installed in the support hole 13 and supported by the bottom surface of the notch of the vertical reinforcing rib plate 21. The swinging shaft 31 is inserted in the swinging shaft hole, two ends of the swinging shaft are fixed on the chassis 9, and the follow-up mechanism is hinged with the lower chassis of the wheelchair through the swinging shaft 31. The connecting shaft 41 is fixed in the connecting shaft hole 4, the lower end of the electric push rod 6 is hinged with the lower chassis, the upper end of the electric push rod is provided with a connecting hole, the electric push rod is sleeved on the connecting shaft 41 through the connecting hole, and the electric push rod 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 6 is the same as that of the published Chinese patent CN205212628U. The rotating body 81 correspondingly arranged on the rotating shaft 8 below the upper seat of the wheelchair is inserted into the supporting sleeve 103, the lower part of the rotating shaft sequentially penetrates through the notch 2101 and the rotating shaft hole 2102 on the vertical reinforcing rib plate 21, the fixing pin 7 penetrates through the fixing pin hole 22 to extend into the accommodating cavity 2, and is inserted into the clamping groove 82 correspondingly arranged on the rotating shaft 8 at the rotating shaft hole 2102, so that the axial limiting of the rotating shaft is performed.
During installation, the follower is hinged with the lower chassis 9 of the wheelchair through the swinging shaft 31, and correspondingly inserted in the supporting sleeve 103 through the rotating body on the rotating shaft of the upper seat for butt joint, and meanwhile, the follower is inserted in the clamping groove (the clamping groove is annular and is convenient for the rotating shaft to rotate) correspondingly arranged on the rotating shaft through the fixing pin 7 for positioning the rotating shaft. When the seat is required to be disassembled, after the fixing pin 7 is pulled out, the seat rotating shaft is pulled out, and the seat can be conveniently and rapidly disassembled.
When the multifunctional electric chair is used, the electric push rod 6 pushes the follow-up mechanism to swing, so that the upper seat is driven to swing, and the function similar to a leisure chair can be realized. Meanwhile, the rotator on the seat rotating shaft can freely rotate in the supporting sleeve 103, so that the seat has a rotating function.
Example 2
The follow-up bracket adopts a profile design, and as shown in fig. 6, the follow-up bracket comprises an upper end plate 1, a containing cavity 2, a swinging shaft hole 3, a forming hole 5 and a connecting shaft hole 4 which are arranged along the length direction of the profile. The accommodating cavity 2 is arranged below the upper end plate 1; the forming holes 5 are positioned at two sides of the accommodating cavity 2, and the connecting shaft holes 4 are arranged at the outer sides of the forming holes at one side. The swing shaft hole 3 is arranged at the lower end of the accommodating cavity 2. Two vertical reinforcing rib plates 21 are symmetrically arranged in the accommodating cavity 2 along the length direction.
The follow-up bracket of the invention intercepts section bars according to the length requirements of different types of wheelchair, as shown in fig. 5, a supporting hole 13 is processed at the central position of the intercepted follow-up section bar upper end plate 1, the aperture of the supporting hole 13 is larger than the distance between two vertical reinforcing rib plates 21, and the supporting hole has a certain depth, so that a notch 2101 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 the structure is supported and fixed in the supporting hole 13, as shown in fig. 7. A through-going spindle hole (not shown) is provided in the wall of the swing spindle hole 3 at a position opposite to the support hole 13, so that the spindle provided under the upper seat can pass through the follower bracket. At the same time, a connecting notch 12 is processed on one side of the cut follow-up section bar, which is provided with the connecting shaft hole 4, and the connecting notch 12 is communicated with the connecting shaft hole 4.
Referring to fig. 8, a locating pin seat mounting hole 17 is further formed in one side of the truncated follow-up section bar upper end plate 1, and a gyroscope mounting hole 15 is formed in the other side of the truncated follow-up section bar upper end plate 1. Two limiting pin mounting holes 16 and two proximity switch mounting holes 14 are respectively machined at symmetrical positions on two sides of the supporting hole 13.
As shown in fig. 9 and 10, the follower of the present invention is mounted on a follower bracket, and includes a support sleeve 103, a proximity switch 104, a gyroscope 105, a stopper pin 106, a positioning pin seat 107, a lower pad 108, a multi-core socket 23, and a self-balancing sensor 24. Referring to fig. 11, the lower pad 108 includes a retainer 1081, a sleeve 1082, and a baffle 1083, wherein the retainer 1081 is provided on an outer peripheral side above the sleeve 1082, and the baffle 1083 is provided on an inner lower side to form a locking groove. The lower cushion 108 is supported by the retainer 1081 at the positioning surface of the bottom surfaces of the notches of the two vertical reinforcing ribs 21, and the sleeve 1082 is positioned in the accommodating cavity between the two vertical reinforcing ribs 21. The support sleeve 103 is fixed in the support hole 13, and the lower cushion sleeve 108 is clamped between the support sleeve 103 and the vertical reinforcing rib plate 21. The locating pin seat 107 is installed in the locating pin seat installation hole 17, and the elastic locating pin can be elastically arranged on the locating pin seat 107 in a up-and-down moving mode. Referring to fig. 12, the elastic positioning pin is composed of a positioning pin 1071, a spring retainer 1072 and a compression spring 1073, the spring retainer 1072 is clamped on the positioning pin 1071, the compression spring 1073 is arranged in the positioning pin seat 107 and sleeved with the positioning pin 1071, and the free end of the compression spring 1072 abuts against the spring retainer 1072. Proximity switches 104 are mounted in corresponding proximity switch mounting holes 14 and limit pins 106 are mounted in corresponding limit pin mounting holes 16. The gyroscope 105 is fixed to the upper end plate 1 through the gyroscope mounting holes 15. The self-balancing sensor 24 is fixedly arranged at one side of the accommodating cavity 2. The swinging shaft 31 is inserted in the swinging shaft hole, two ends of the swinging shaft are fixed on the chassis 9, and the follower mechanism is hinged with the lower chassis 9 of the wheelchair through the swinging shaft 31. The connecting shaft 41 is fixed in the connecting shaft hole 4, the lower end of the electric push rod 6 is hinged with the lower chassis, the upper end of the electric push rod is provided with a connecting hole, the electric push rod is sleeved on the connecting shaft 41 through the connecting hole, and the electric push rod is positioned in the connecting notch 12 of the follow-up bracket. A multi-core socket 23 is fixedly arranged below the rotating shaft hole of the follow-up section bar, and a plurality of first electric connection terminals which are arranged along the circumferential direction and mutually insulated are arranged on the multi-core socket 23.
Referring to fig. 10, when the seat is installed, the rotating shaft 8 arranged below the upper seat is inserted into the following bracket through the supporting sleeve 103, the rotating body 81 is supported at the supporting sleeve 103, the end part of the rotating shaft 8 extends out through the rotating shaft hole (not shown), the correspondingly arranged multi-core plug 83 is plugged into the multi-core socket on the following mechanism, and the first electric connection terminal on the multi-core socket 23 is electrically connected with the second electric connection terminal on the corresponding circumferential position of the multi-core plug 83 fixed at the lower end of the rotating shaft 8. The locking plate correspondingly arranged at the lower part of the rotating shaft is inserted into the locking groove of the lower pad 108, and when at least part of the locking plate rotates below the baffle 1083, the rotating shaft 8 is axially locked. Meanwhile, the bottom of the seat is provided with two pin holes, the two pin holes are respectively positioned at two circumferential positions with a phase difference of 180 degrees, the positioning pin 1071 at the upper end plate of the follow-up mechanism is positioned at the same circumferential position corresponding to the pin holes, when the seat does not need to rotate, the positioning pin 1071 is sprung up through upward acting force of the compression spring 1073, and the upper end part of the positioning pin 1071 stretches into the corresponding pin hole to fix the seat and the follow-up mechanism. The arrangement of the two pin holes enables the seat to rotate 180 degrees for fixing.
Referring to fig. 13, the multi-core plug 83 includes a plug body 834, a first electrical connection terminal 832, an insulating ring 833 and a first electrical connection cord 831, where the plug body 834 is a hollow tube made of insulating material, and a plurality of axially distributed lead holes 835 are formed at a circumferential position of a tube wall of the hollow tube, and the lead holes are connected with a hollow cavity in the center of the hollow tube; the first electrical connection terminal 832 and the insulating ring 833 are respectively circular rings adapted to the outer wall of the hollow tube and are respectively made of conductive material and insulating material, and the outer diameter of the first electrical connection terminal 832 is larger than the outer diameter of the insulating ring 833; the plurality of first electric connection terminals 832 are sleeved on the plug body 834 along the axial direction and are separated by insulating rings 833, each first electric connection terminal 832 is arranged at the axial position of the corresponding lead hole 835, one end of a first electric connection wire 831 corresponding to each first electric connection terminal 832 is connected with the first electric connection terminal 832, the other end of the first electric connection wire 831 is led into a hollow cavity of the plug body 834 through the lead hole 835, and the first electric connection terminal 832 is led out from the hollow cavity to be electrically connected with a remote controller arranged on an upper seat. The multicore socket 23 is in a circular tube shape and comprises a multicore socket body 236, a second electrical connection terminal 232, a spring 233, an adjusting nut 234 and a second electrical connection wire 231; one end of the second electric connection terminal 232 is a small-diameter end, the other end is a large-diameter end, and the second electric connection wire 231 is connected to the large-diameter end; the multi-core socket body 236 is provided with a plug hole 237 which is matched with the outer diameter of the first electric connection terminal 832 at the center, a plurality of terminal holes 238 which are distributed along the axial direction are arranged at a circumferential position of the multi-core socket body 236, the terminal holes 238 are arranged along the radial direction of the plug hole 237 and penetrate through the hole wall of the plug hole 237, the aperture of the terminal holes 238 corresponding to the inner side end of the plug hole 237 is larger than the diameter of the small diameter end but smaller than the diameter of the large diameter end of the second electric connection terminal 232, the hole wall of the outer side section is provided with an internal thread, one end of the adjusting nut 234 is arranged in the terminal hole 238 by screwing in the internal thread, the center of the adjusting nut 234 is provided with a hole, one end of the spring 233 is propped against the second electric connection terminal 232, the other end is propped against the adjusting nut 234, the second electric connection terminal 232 stretches out towards the plug hole side under the elastic force of the spring 233 to be electrically connected with the first electric connection terminal 832, the mutual propping degree of the two electric connection terminals is adjusted by adjusting the screwing-in depth of the adjusting nut 234, so that better electric connection is ensured. The lower end of the multi-core socket is provided with a lead hole groove 235 at a circumferential position corresponding to the terminal hole 238. One end of the second electrical connection wire 231 is connected to the larger diameter end of the corresponding second electrical connection terminal 232, and the other end is led out of the multi-core socket 23 through the hole and the lead hole groove 235 at the center of the spring 233 and the adjusting nut 234, 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 6 can push the follow-up support, thereby driving the upper seat to swing and realizing the function similar to a leisure chair. Simultaneously, the gyroscope 105 can detect the horizontal position of the upper end plate 1, and the angle between the upper end plate 1 and the chassis 9 is adjusted through the expansion and contraction of the electric push rod 6, so that the horizontal state of the upper end plate 1 is kept, the upper seat is always kept in the horizontal state 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 24 arranged on one side of the bottom of the follow-up mechanism detects the angle between the upper end plate 1 and the chassis 9, and when the inclination angle exceeds a preset value (such as 15 degrees), the electric push rod 6 stops working, and the limit position of seat swing is limited through the self-balancing sensor 24. Through the state of the corresponding release mechanism control locating pin 1071 that sets up in upper portion seat inside, when release mechanism control locating pin 1071 pushes down to get into in the locating pin seat 107 completely, locating pin 1071 breaks away from in the pinhole that the seat below corresponds, and the seat can rotate, rotates 180 back, and locating pin 1071 is in the pinhole below, because compression spring 1073 ascending effort spring up and upper end part stretches into in the pinhole that corresponds and carries out seat and follower fixed. Meanwhile, the limiting pins 106 which are correspondingly arranged at the two circumferential positions with the phase difference of 180 degrees are combined with the limiting plates which are correspondingly arranged at the bottom of the seat, so that the limiting plates are limited to rotate in the range of the two limiting pins, and the phenomenon that electric signal wires are easily wound due to overlarge rotation of the seat or multiple rotations around the same direction is avoided. Meanwhile, the direction judging proximity switches 104 on two sides sense the corresponding sensing pieces arranged on the bottom of the upper seat, the sensing pieces trigger different direction judging proximity switches 104 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, after the positioning pin 1041 is pressed down, the seat is rotated, so that the lock plate on the seat rotating shaft is pulled out from the lock groove of the lower cushion cover, the rotating body 82 is pulled out from the support cover 103, meanwhile, the multi-core socket 23 and the multi-core plug 83 are separated, and the mechanical connection and the electrical connection are simultaneously disassembled, so that the wheelchair is quick and convenient to carry, transport and maintain.
Claims (20)
1. A follower bracket for a wheelchair, characterized by: the follow-up bracket is designed into a section bar and comprises an upper end plate, a containing cavity, a swinging shaft hole and a connecting shaft hole which are arranged along the length direction of the section bar; the accommodating cavity is arranged below the upper end plate; the connecting shaft hole is arranged on one side of the accommodating cavity; the swing shaft hole is arranged at the lower end of the accommodating cavity; at least one vertical reinforcing rib plate is arranged in the accommodating cavity along the length direction of the section bar; a supporting hole is formed in the center of the upper end plate of the follow-up bracket; the upper end of the vertical reinforcing rib plate and the corresponding position of the supporting hole are provided with a notch which is communicated with the supporting hole, and the bottom surface of the notch forms a positioning surface; one side of the upper end plate is provided with a connecting notch which is communicated with the connecting shaft hole.
2. The follower holder of claim 1, wherein: the vertical reinforcing rib plates are symmetrically arranged on two sides in the accommodating cavity along the length direction of the section bar, and the accommodating cavity is divided into a middle accommodating cavity and side accommodating cavities on two sides; the supporting holes are arranged at the middle positions of the vertical reinforcing rib plates at the two sides, the diameter of each supporting hole is larger than the distance between the two vertical reinforcing rib plates, and the supporting holes downwards extend to the notch of the vertical reinforcing rib plate.
3. The follower holder of claim 2, wherein: the bottom of the middle accommodating cavity is provided with a rotating shaft hole.
4. A follower holder according to claim 3, wherein: and forming holes are formed in the two sides of the accommodating cavity along the length direction and correspond to the height of the connecting shaft hole.
5. The follower holder of claim 4, wherein: the swing shaft hole is arranged at the center of the lower end of the accommodating cavity.
6. The follower support of any one of claims 2-5, wherein: and the upper end plate is provided with a positioning pin seat mounting hole.
7. The follower holder of claim 6, wherein: the upper end plate is provided with two proximity switch mounting holes which are symmetrically arranged on two sides of the supporting hole.
8. The follower holder of claim 7, wherein: and a self-balancing sensor mounting hole is formed in the hole wall of the lower end of one side of the accommodating cavity.
9. The follower holder of claim 8, wherein: and fixing pin holes are symmetrically formed in two sides of the accommodating cavity and penetrate through the corresponding vertical reinforcing rib plates to be communicated with the middle accommodating cavity.
10. A follower prepared using the follower support of any one of claims 1 to 5, 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 supporting sleeve, a swinging shaft, a connecting shaft and an electric push rod; 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, the electric push rod is sleeved on the connecting shaft through the connecting hole and is positioned in the connecting notch of the follow-up bracket.
11. The follower mechanism of claim 10, wherein: the bottom of the follow-up bracket is provided with a rotating shaft hole which is positioned below the supporting hole and communicated with the supporting 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 rotating shaft 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.
12. The follower mechanism of claim 11, 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.
13. The follower mechanism of claim 12, 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.
14. The follower mechanism of claim 13, 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.
15. The follower mechanism of claim 14, wherein: the follower mechanism further comprises a gyroscope; the gyroscope is arranged on an upper end plate of the follow-up bracket.
16. The follower mechanism of claim 15, wherein: the follow-up mechanism also comprises a proximity switch which is symmetrically arranged at two sides of the upper supporting hole of the upper end plate.
17. The follower as defined in claim 16, wherein: the follow-up mechanism also comprises a self-balancing sensor which is arranged at the outer hole wall at one side of the accommodating cavity.
18. The follower mechanism of claim 17, wherein: fixing pin holes are symmetrically formed in two sides of the accommodating cavity of the follow-up bracket; the follow-up mechanism further comprises two fixing pins which are symmetrically arranged at the fixing pin holes on two sides of the lower accommodating cavity, extend into the accommodating cavity and are inserted into clamping grooves which are correspondingly arranged on the rotating shaft below the seat.
19. The follower mechanism of claim 18, wherein: the fixing pin is a plug pin.
20. The follower mechanism of claim 17, wherein: the following mechanism also comprises a lower cushion sleeve; the lower cushion sleeve comprises a retainer ring, a sleeve and a baffle; a retainer ring is arranged on the outer peripheral side above the sleeve, and a baffle plate is arranged on the inner side below the sleeve to form a locking groove; the lower cushion is sleeved below the supporting sleeve and is clamped between the positioning surface of the notch of the vertical reinforcing rib plate and the supporting sleeve through the check ring; the lock plate is correspondingly arranged on the rotating shaft below the seat, and is inserted through the lock groove of the lower cushion sleeve, and when at least part of the lock plate rotates below the baffle, the rotating shaft is axially locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711093643.5A CN107714334B (en) | 2017-11-08 | 2017-11-08 | Follow-up support and follow-up mechanism for wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711093643.5A CN107714334B (en) | 2017-11-08 | 2017-11-08 | Follow-up support and follow-up mechanism for wheelchair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107714334A CN107714334A (en) | 2018-02-23 |
| CN107714334B true CN107714334B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711093643.5A Active CN107714334B (en) | 2017-11-08 | 2017-11-08 | Follow-up support and follow-up mechanism for wheelchair |
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| Country | Link |
|---|---|
| CN (1) | CN107714334B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6328384B1 (en) * | 1998-05-25 | 2001-12-11 | Ikeda Bussan Co., Ltd. | Coupling structure between seatback and armrest for vehicle |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5167421A (en) * | 1990-07-16 | 1992-12-01 | Liu Yunzhao | Safety seat equipped in automobile |
| AU2129502A (en) * | 2001-03-06 | 2002-09-12 | Lendal Pty Ltd | Chassis |
| DE202009009718U1 (en) * | 2009-07-16 | 2010-12-02 | Mösl & Brandner GmbH | spacer |
| DE102010042923B3 (en) * | 2010-10-26 | 2012-01-26 | Dauphin Entwicklungs- U. Beteiligungs-Gmbh | Chair, especially office chair |
| CN102072179B (en) * | 2011-01-28 | 2012-10-31 | 佛山市富士宝电器科技股份有限公司 | Swing mechanism of fan head |
| CN202667427U (en) * | 2012-06-06 | 2013-01-16 | 上海赛科利汽车模具技术应用有限公司 | Swinging mechanism for automobile flanging die |
| CN202879625U (en) * | 2012-09-24 | 2013-04-17 | 上海宝钢工业技术服务有限公司 | Shaft fixing and swinging mechanism for rack car |
| CN205969075U (en) * | 2016-08-23 | 2017-02-22 | 广东富利盛仿生机器人股份有限公司 | Shoulder swing back and forth mechanism |
| CN206242814U (en) * | 2016-11-15 | 2017-06-13 | 重庆市慧冠机电有限公司 | Rear axle housing body |
| CN208756356U (en) * | 2017-11-08 | 2019-04-19 | 南京康尼智能技术有限公司 | Servo support and follower for wheel-chair |
-
2017
- 2017-11-08 CN CN201711093643.5A patent/CN107714334B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6328384B1 (en) * | 1998-05-25 | 2001-12-11 | Ikeda Bussan Co., Ltd. | Coupling structure between seatback and armrest for vehicle |
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| CN107714334A (en) | 2018-02-23 |
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Application publication date: 20180223 Assignee: NANJING KANGNI INTELLIGENT TECHNOLOGY Co.,Ltd. Assignor: NANJING KANGNI MECHANICAL & ELECTRICAL Co.,Ltd. Contract record no.: 2018320000419 Denomination of invention: Follow-up support and follow-up mechanism for wheelchair License type: Exclusive License Record date: 20181219 |
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Effective date of registration: 20190212 Address after: 210013 gulping 4, Gulou District, Nanjing, Jiangsu Applicant after: NANJING KANGNI INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 210038 19 Hengda Road, Nanjing economic and Technological Development Zone, Jiangsu Applicant before: NANJING KANGNI MECHANICAL & ELECTRICAL Co.,Ltd. |
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Effective date of registration: 20200422 Address after: 210038 No. 19 Hengda Road, Nanjing economic and Technological Development Zone, Jiangsu, China Applicant after: Nanjing Kangni Mechanical & Electrical Co.,Ltd. Address before: 210013, Gu Ping Gang 4, Gulou District, Jiangsu, Nanjing Applicant before: NANJING KANGNI INTELLIGENT TECHNOLOGY Co.,Ltd. |
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