CN113827409A - Pedal auxiliary mechanism and wheelchair - Google Patents
Pedal auxiliary mechanism and wheelchair Download PDFInfo
- Publication number
- CN113827409A CN113827409A CN202111265384.6A CN202111265384A CN113827409A CN 113827409 A CN113827409 A CN 113827409A CN 202111265384 A CN202111265384 A CN 202111265384A CN 113827409 A CN113827409 A CN 113827409A
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- Prior art keywords
- rod
- sleeve
- rotating
- bevel gear
- pedal
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- 230000007246 mechanism Effects 0.000 title claims abstract description 42
- 230000000295 complement effect Effects 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 description 4
- 244000309464 bull Species 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000018737 Parkinson disease Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
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Classifications
-
- 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
-
- 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
-
- 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
- A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
- A61G5/127—Rests specially adapted therefor, e.g. for the head or the feet for lower legs
Abstract
The invention relates to the technical field of medical auxiliary equipment, and provides a pedal auxiliary mechanism, which comprises: the first rotating rod is parallel to the cushion, the first fixing rod is perpendicular to the first rotating rod, the first fixing sleeve is sleeved on the first rotating rod and is fixedly connected with the cushion, and the first driving motor drives the first rotating rod to rotate; one end of the first fixed rod is fixedly connected with the first rotating rod, and the other end of the first fixed rod is detachably connected with a first pedal; a first rotating sleeve is sleeved on the first fixed rod through a bearing, and a first supporting plate is arranged on the side wall of the first rotating sleeve; one end of the first rotating sleeve is provided with a first complete bevel gear, the first rotating rod is provided with a first incomplete bevel gear, the first complete bevel gear and the first incomplete bevel gear are meshed, the first rotating rod is provided with a first main fixing piece, the first rotating sleeve is provided with a first auxiliary fixing piece, and the first main fixing piece and the first auxiliary fixing piece are matched to limit the rotation of the first rotating sleeve; the invention can better assist in supporting the lower leg of the patient.
Description
Technical Field
The invention relates to the technical field of medical auxiliary equipment, in particular to a pedal auxiliary mechanism and a wheelchair.
Background
The wheelchair is used as common medical auxiliary equipment and can be seen everywhere in hospitals in China, and the wheelchair can assist patients to move for all patients;
the wheelchair is indispensable for some Parkinson patients, and in the actual use process, the patients cannot completely place feet on the pedals by themselves due to the small motion amplitude of the lower limbs of the patients, and meanwhile, some common wheelchairs in the market cannot meet the use requirements of the Parkinson patients; at this time, as in chinese patent application No. 202010254801.6, it discloses a parkinson's disease patient movement assisting device, the footrest device includes a footrest having a first state and a second state and a driving member for driving the footrest to switch between the first state and the second state, the footrest includes a transverse plate and two side plates hinged to two ends of the transverse plate, respectively, and the other end of the side plate is hinged to a connecting arm; the patient that can supply to use realizes going on a journey alone, promotes the practicality of wheelchair to the parkinson patient. However, the pedal structure in the above patent still has a small float, and for some slightly complex terrains, the pedals cannot completely pass through, thus hindering the passability of the entire wheelchair.
If the application number is: CN201911162739.1, which discloses an assistant standing wheelchair for old people, and also relates to a pedal assistant mechanism, which comprises a swing rod, a pedal, a leg guard and an electric push rod, and the electric push rod drives the mechanism to move; meanwhile, the rack is used for driving the leg guard plate to move, the whole structure is more complex, and the rack is easy to accidentally injure patients; meanwhile, due to the transmission characteristic of the gear, the leg guard plate can move along with the movement of the electric push rod, so that the leg guard plate cannot be stopped at a good leg guard position for a long time, and secondary injury can be caused to a patient.
The present application provides a pedal assisting mechanism and a wheelchair to solve the above problems.
Disclosure of Invention
The invention aims to provide a pedal assisting mechanism and a wheelchair, which utilize a first incomplete bevel gear and a first complete bevel gear to realize the fixed rotation angle of a first rotating sleeve and ensure that a first supporting plate can stop at a fixed position to support the lower leg of a patient.
The embodiment of the invention is realized by the following technical scheme: the utility model provides a pedal complementary unit sets up in the below of cushion, including pedal complementary unit of left side and the pedal complementary unit of right side that the structure symmetry set up, pedal complementary unit of a left side includes: the first rotating rod is parallel to the cushion, the first fixing rod is perpendicular to the first rotating rod, the first fixing sleeve is sleeved on the first rotating rod and is fixedly connected with the cushion, and the first driving motor drives the first rotating rod to rotate; one end of the first fixed rod is fixedly connected with the first rotating rod, and the other end of the first fixed rod is detachably connected with a first pedal; a first rotating sleeve is sleeved on the first fixed rod through a bearing, and a first supporting plate is arranged on the side wall of the first rotating sleeve; one end of the first rotating sleeve is provided with a first complete bevel gear, a first incomplete bevel gear is arranged on the first rotating rod, the first complete bevel gear and the first incomplete bevel gear are meshed, a first main fixing piece is arranged on the first rotating rod, a first auxiliary fixing piece is arranged on the first rotating sleeve, and the first main fixing piece and the first auxiliary fixing piece are matched to limit rotation of the first rotating sleeve.
Further, the tooth surface of the first incomplete bevel gear occupies one-fourth of the circumferential surface.
Further, the first main fixing member includes: the rotary straight line mechanism comprises a screw rod, a screw rod sliding sleeve and a movable sleeve sleeved on the screw rod sliding sleeve, the screw rod is fixed on the first fixing sleeve through a fixing rod, and the screw rod is perpendicular to the first rotary sleeve; the screw rod sliding sleeve is sleeved on the screw rod, a sliding groove is formed in the screw rod sliding sleeve along the axis direction of the screw rod, a fixed key is arranged on the inner ring of the movable sleeve and is arranged in the sliding groove, the movable sleeve is fixed on the first fixed sleeve through a fixed rod and can rotate around the axis of the movable sleeve, and an external gear is arranged on the outer side of the movable sleeve and is meshed with the cylindrical gear disc; the first secondary fixing member includes: the first through hole penetrates through the rotary sleeve, a first groove is formed in the first fixing rod, and the axis of the first groove and the axis of the screw rod are arranged in a collinear manner; the aperture of the first through hole and the aperture of the first groove are both larger than the diameter of the screw rod sliding sleeve.
Further, the first main fixing member includes: the circular baffle is provided with a first opening, and the first opening is arranged at the tooth position of the first incomplete bevel gear; with first main mounting perpendicular first secondary mounting that sets up includes: one side of the regular quadrilateral baffle abuts against the top surface of the circular baffle.
Furthermore, the right pedal auxiliary mechanism comprises a second rotating rod parallel to the cushion, a second fixed rod perpendicular to the second rotating rod, a second fixed sleeve sleeved on the second rotating rod and fixedly connected with the cushion, and a second driving motor driving the second rotating rod to rotate; the second end of the second fixed rod is fixedly connected with the second rotating rod, and the other end of the second fixed rod is detachably connected with a second pedal; a second rotating sleeve is sleeved on the second fixed rod through a bearing, and a second supporting plate is arranged on the side wall of the second rotating sleeve; a second complete bevel gear is arranged at one end of the second rotating sleeve, a second incomplete bevel gear is arranged on the second rotating rod, the second complete bevel gear and the second incomplete bevel gear are meshed, a second main fixing piece is arranged on the second rotating rod, a second auxiliary fixing piece is arranged on the second rotating sleeve, and the second main fixing piece and the second auxiliary fixing piece are matched to limit the rotation of the second rotating sleeve; the first rotating rod is fixedly connected with the second rotating rod.
Further, still be equipped with the shell, the first incomplete bevel gear of shell full parcel, first complete bevel gear, first main mounting, first vice mounting, a driving motor and first fixed cover.
A wheelchair, characterized by comprising: the pedal auxiliary mechanism, the wheelchair seat, the front wheel and the rear wheel; the pedal auxiliary mechanism, the front wheel and the rear wheel are respectively arranged below the wheelchair seat.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:
1: it utilizes first incomplete bevel gear and first complete bevel gear to realize the fixed rotation angle of first swivel mount, has guaranteed that first backup pad can stop at a fixed position and support patient's shank.
2: first dead lever of first bull stick cooperation has realized the function that pedal ability goes up and down, has solved when patient's low limbs float less, is difficult for going up pedal problem.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a pedal assist mechanism and a wheelchair in a wheelchair according to embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of a pedaling auxiliary mechanism and a pedaling mechanism of a wheelchair according to embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of a pedaling auxiliary mechanism and a pedaling mechanism of a wheelchair according to embodiment 2 of the present invention;
FIG. 4 is a first schematic view of the pedal assist mechanism and the installation structure of the circular baffle plate in the wheelchair according to embodiment 2 of the present invention;
FIG. 5 is a second schematic view of the pedal assist mechanism and the installation structure of the circular baffle in the wheelchair according to embodiment 2 of the present invention;
FIG. 6 is an enlarged view A of FIG. 2;
icon: 1-wheelchair, 11-seat cushion, 2-pedal auxiliary mechanism, 21-first driving motor, 22-first rotating rod, 23-first fixed rod, 24-first rotating sleeve, 25-first incomplete bevel gear, 26-first complete bevel gear, 27-first fixed sleeve, 28-first supporting plate, 29-pedal, 31-cylindrical gear disc, 32-fixed rod, 33-screw rod, 34-screw rod sliding sleeve, 35-movable sleeve, 36-sliding groove, 37-fixed key, 38-first groove, 39-first through hole, 40-shell, 51-circular baffle, 52-regular quadrilateral baffle and 511-notch.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the terms are only used for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1, 2 and 6, a pedaling assisting mechanism 2, which is disposed below a seat 11 of a wheelchair 1, comprises a left pedaling assisting mechanism and a right pedaling assisting mechanism, which are symmetrically disposed, in some embodiments, the left pedaling assisting mechanism and the right pedaling assisting mechanism are driven and controlled by a single servo motor, but it is also possible that the left pedaling assisting mechanism and the right pedaling assisting mechanism are driven and controlled by two servo motors respectively as in this embodiment; specific examples are as follows.
Left pedal complementary unit includes: a first rotating rod 22 parallel to the seat cushion 11, a first fixing rod 23 perpendicular to the first rotating rod 22, a first fixing sleeve 27 sleeved on the first rotating rod 22 and fixedly connected with the seat cushion 11, and a first driving motor 21 for driving the first rotating rod 22 to rotate; one end of the first fixed rod 23 is fixedly connected with the first rotating rod 22, and the other end is detachably connected with a first pedal 29; a first rotating sleeve 24 is sleeved on the first fixing rod 23 through a bearing, and a first supporting plate 28 is arranged on the side wall of the first rotating sleeve 24; one end of the first rotating sleeve 24 is provided with a first full bevel gear 26, the first rotating rod 22 is provided with a first incomplete bevel gear 25, the first full bevel gear 26 and the first incomplete bevel gear 25 are arranged in a meshed mode, and the tooth surface of the first incomplete bevel gear 25 accounts for one fourth of the circumferential surface; the rotating rod drives one fourth of the first incomplete bevel gear 25 to rotate, and because the rotating rod only has one fourth of the first incomplete bevel gear 25, the first incomplete bevel gear 25 only drives the first complete bevel gear 26 to rotate 90 degrees at each time; it should be emphasized here that the first rotating rod 22 drives the first fixing rod 23 to rotate, and the first fixing rod 23 rotates around the first rotating rod 22 as an axis, so as to achieve the lifting of the pedals 29, and here, it is also noted that the first supporting plate 28 is intended to support the lower leg of the patient, and has only two working conditions, the first one is vertical to the ground, the second one is parallel to the first rotating sleeve 24 and the second rotating sleeve, and the first working condition is a limiting condition, which can not affect the patient to get on or off the wheelchair 1, and the leg is blocked by the first supporting plate 28; the second working state is a normal use state, and the leg of the patient is supported by the largest contact area; therefore, the purpose of the first full bevel gear 26 being rotated 90 degrees here is for this, for better use.
A first main fixing piece is arranged on the first rotating rod 22, a first auxiliary fixing piece is arranged on the first rotating sleeve 24, and the first main fixing piece and the first auxiliary fixing piece are matched to limit the rotation of the first rotating sleeve 24; the first main fixing piece and the first auxiliary fixing piece are used for fixing the rotation of the first rotating sleeve 24 and preventing unnecessary rotation in the working state; specifically, first main mounting includes: the rotary straight line mechanism comprises a screw rod 33, a screw rod 33 sliding sleeve and a movable sleeve 35 sleeved on the screw rod 33 sliding sleeve, the screw rod 33 is fixed on the first fixed sleeve 27 through a fixed rod 32, and the screw rod 33 is perpendicular to the first rotary sleeve 24; the screw 33 is sleeved on the screw 33 in a sliding way, a sliding groove 36 is formed in the screw 33 on the sliding way along the axis direction of the screw 33, a fixed key 37 is arranged on the inner ring of the movable sleeve 35, the fixed key 37 is arranged in the sliding groove 36, the movable sleeve 35 is fixed on the first fixed sleeve 27 through a fixed rod 32, the movable sleeve 35 can rotate around the axis of the movable sleeve, and an external gear is arranged on the outer side of the movable sleeve 35 and meshed with the cylindrical gear disc 31; the first secondary fixing member includes: a first through hole 39 penetrating through the first rotary sleeve, a first groove 38 is arranged on the first fixing rod 23, and the axis of the first groove 38 and the axis of the screw 33 are arranged in a collinear way; the first through hole 39 and the first groove 38 have a diameter larger than the diameter of the sliding sleeve of the screw 33. The working process is as follows: the first rotating rod 22 drives the cylindrical gear disc 31 to rotate, the cylindrical gear disc 31 drives the movable sleeve 35 to rotate, the movable sleeve 35 drives the screw rod 33 to slide in a sliding way through the matching of the fixed key 37 and the sliding groove 36, the screw rod 33 slides in the sliding way under the use of the screw rod 33 and moves leftwards, after the first incomplete bevel gear 25 drives the first complete bevel gear 26 to rotate 90, the first rotating rod 22 continues to rotate, and the screw rod 33 slides leftwards to move into the first through hole 39 and the first groove 38, so that the first rotating sleeve 24 and the first fixing piece are relatively fixed, the relative movement of the first rotating sleeve 24 and the first fixing piece is avoided, and the working state of the first supporting plate 28 is ensured to be firm, wherein the motor for driving the first rotating rod 22 to rotate is a servo motor, and has the capability of controlling the rotating angle and a certain damping of the rotating shaft; or a steering engine may be used to control the rotation of the first lever 22.
When adopting steering wheel control, the whole theory of operation of this application does: the steering wheel drives first bull stick 22 rotatory, first bull stick 22 drives first dead lever 23 rotatory, thereby realized pedal 29's lift, first incomplete bevel gear 25 drives first complete bevel gear 26 rotatory 90 degrees after, first incomplete bevel gear 25 continues to rotate, rotatory back cylindrical gear dish 31 drives movable sleeve 35 rotatory, thereby lead screw 33 sliding sleeve inserts in first through-hole 39 and first recess 38, it is fixed with first rotating sleeve 24 and second dead lever 32, the steering wheel stops rotatoryly, whole in-process, the rotation angle of steering wheel is between 30 degrees ~ 90 degrees, when rotatory 30 degrees, when less number of degrees, it can to adopt the gear train to enlarge the rotation angle of first incomplete bevel gear 25.
In order to ensure that the whole device does not protrude and hurt the legs of the patient by mistake, in the embodiment, a housing 40 is further provided, and the housing 40 fully wraps the first incomplete bevel gear 25, the first complete bevel gear 26, the first main fixing member, the first auxiliary fixing member, the first driving motor 21 and the first fixing sleeve 27.
The right and left pedaling aids are substantially identical, as follows: the second rotating rod is parallel to the cushion, the second fixing rod is vertically arranged with the second rotating rod, the second fixing sleeve is sleeved on the second rotating rod and is fixedly connected with the cushion, and the second driving motor drives the second rotating rod to rotate; the second end of the second fixed rod is fixedly connected with the second rotating rod, and the other end of the second fixed rod is detachably connected with a second pedal; a second rotating sleeve is sleeved on the second fixed rod through a bearing, and a second supporting plate is arranged on the side wall of the second rotating sleeve; a second complete bevel gear is arranged at one end of the second rotating sleeve, a second incomplete bevel gear is arranged on the second rotating rod, the second complete bevel gear and the second incomplete bevel gear are meshed, a second main fixing piece is arranged on the second rotating rod, a second auxiliary fixing piece is arranged on the second rotating sleeve, and the second main fixing piece and the second auxiliary fixing piece are matched to limit the rotation of the second rotating sleeve; the first rotating rod is fixedly connected with the second rotating rod.
Example 2
As shown in fig. 3 to 5, in the present embodiment, the main mechanism is completely the same as that of embodiment 1, and the difference is that the first main fixing member and the first sub fixing member are different, specifically, as shown in fig. 4 to 5, the first main fixing member includes: the round baffle 51, the round baffle 51 is fixedly connected with the first incomplete bevel gear 25, a first notch 511 is arranged on the round baffle 51, and the first notch 511 is arranged at the tooth of the first incomplete bevel gear 25; with first main mounting perpendicular first secondary mounting that sets up includes: a regular quadrilateral baffle 52, wherein the regular quadrilateral baffle 52 is fixedly connected with the first full bevel gear 26, and one edge of the regular quadrilateral baffle 52 abuts against the top surface of the circular baffle 51; as shown in fig. 4 and 5, when the first incomplete bevel gear 25 drives the first complete bevel gear 26 to rotate, two states exist, as shown in fig. 4, when the first incomplete bevel gear 25 and the first complete bevel gear 26 are not meshed, the edge of the regular quadrilateral baffle 52 is abutted by the circular baffle 51, so that the first complete bevel gear 26 is ensured not to rotate, and the requirement of 0 degree is ensured; as shown in fig. 5, when the first incomplete bevel gear 25 drives the first complete bevel gear 26 to rotate, the corner of the regular quadrilateral baffle 52 passes through the notch 511 on the circular baffle 51, so that the purpose that the first incomplete bevel gear 25 drives the first complete bevel gear 26 to rotate is achieved, and after the rotation, the other side of the regular quadrilateral baffle 52 abuts against the circular baffle 51 and cannot rotate continuously, thereby ensuring the requirement of 90 degrees.
Example 3
In the present embodiment, a wheelchair 1 is disclosed, comprising: the pedaling assistance mechanism 2 of embodiment 1 or embodiment 2, the wheelchair 1 seat, the front wheels and the rear wheels; the pedal auxiliary mechanism 2, the front wheel and the rear wheel are respectively arranged below the seat of the wheelchair 1.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A pedal complementary unit (2), set up in the below of cushion (11), its characterized in that: including pedal complementary unit of left side and the pedal complementary unit of right side that the structure symmetry set up, pedal complementary unit of left side includes: a first rotating rod (22) parallel to the seat cushion (11), a first fixing rod (23) perpendicular to the first rotating rod (22), a first fixing sleeve (27) sleeved on the first rotating rod (22) and fixedly connected with the seat cushion (11), and a first driving motor (21) driving the first rotating rod (22) to rotate; one end of the first fixed rod (23) is fixedly connected with the first rotating rod (22), and the other end of the first fixed rod is detachably connected with a first pedal (29); a first rotating sleeve (24) is sleeved on the first fixing rod (23) through a bearing, and a first supporting plate (28) is arranged on the side wall of the first rotating sleeve (24); one end of the first rotating sleeve (24) is provided with a first complete bevel gear (26), the first rotating rod (22) is provided with a first incomplete bevel gear (25), the first complete bevel gear (26) and the first incomplete bevel gear (25) are arranged in a meshed mode, the first rotating rod (22) is provided with a first main fixing piece, the first rotating sleeve (24) is provided with a first auxiliary fixing piece, and the first main fixing piece and the first auxiliary fixing piece are matched to limit rotation of the first rotating sleeve (24).
2. Pedal assist mechanism (2) according to claim 1, characterized in that the tooth flanks of the first incomplete bevel gear (25) occupy at most a quarter of the circumferential surface.
3. Pedal assist mechanism (2) according to claim 2,
the first main fixing member includes: the rotary straight line mechanism comprises a cylindrical gear disc (31) and a rotary straight line mechanism, wherein the cylindrical gear disc (31) is arranged on a first rotating rod (22), the rotary straight line mechanism comprises a screw rod (33), a screw rod (33) sliding sleeve and a movable sleeve (35) sleeved on the screw rod (33) sliding sleeve, the screw rod (33) is fixed on the first fixed sleeve (27) through a fixed rod (32), and the screw rod (33) is perpendicular to the first rotary sleeve (24); the screw rod (33) is sleeved on the screw rod (33) in a sliding manner, a sliding groove (36) is formed in the sliding sleeve of the screw rod (33) along the axis direction of the screw rod (33), a fixed key (37) is arranged on the inner ring of the movable sleeve (35), the fixed key (37) is arranged in the sliding groove (36), the movable sleeve (35) is fixed on the first fixed sleeve through a fixed rod (32), the movable sleeve (35) can rotate around the axis of the movable sleeve, and an external gear is arranged on the outer side of the movable sleeve (35) and meshed with the cylindrical gear disc (31);
the first secondary securing member includes: a first through hole (39) penetrating through the rotating sleeve, a first groove (38) is arranged on the first fixing rod (23), and the axis of the first groove (38) and the axis of the screw rod (33) are arranged in a collinear manner; the aperture of the first through hole (39) and the aperture of the first groove (38) are both larger than the diameter of the screw rod (33) sliding sleeve.
4. Pedal assist mechanism (2) according to claim 2,
the first main fixing member includes: the round baffle plate (51), a first notch (511) is arranged on the round baffle plate (51), and the first notch (511) is arranged at the tooth of the first incomplete bevel gear (25);
with first main mounting sets up perpendicularly first vice mounting includes: a square baffle (52), wherein one side of the square baffle (52) abuts against the top surface of the circular baffle (51).
5. The pedal-assist mechanism as claimed in claim 1, wherein the right pedal-assist mechanism comprises a second rotating rod parallel to the seat cushion, a second fixed rod vertically disposed with the second rotating rod, a second fixed sleeve fixedly connected with the seat cushion and sleeved on the second rotating rod, and a second driving motor for driving the second rotating rod to rotate; the second end of the second fixed rod is fixedly connected with the second rotating rod, and the other end of the second fixed rod is detachably connected with a second pedal; a second rotating sleeve is sleeved on the second fixed rod through a bearing, and a second supporting plate is arranged on the side wall of the second rotating sleeve; one end of the second rotating sleeve is provided with a second complete bevel gear, the second rotating rod is provided with a second incomplete bevel gear, the second complete bevel gear and the second incomplete bevel gear are meshed, the second rotating rod is provided with a second main fixing piece, the second rotating sleeve is provided with a second auxiliary fixing piece, and the second main fixing piece and the second auxiliary fixing piece are matched to limit the rotation of the second rotating sleeve; the first rotating rod is fixedly connected with the second rotating rod.
6. The pedaling assist mechanism (2) according to claim 1, further comprising a housing (40), wherein said housing (40) fully encloses said first incomplete bevel gear (25), said first complete bevel gear (26), said first main fixing member, said first auxiliary fixing member, said first driving motor (21) and said first fixing sleeve (27).
7. A wheelchair (1) characterized by comprising: pedal assist mechanism (2) according to any of claims 1-6, wheelchair (1) seat, front and rear wheels; the pedal auxiliary mechanism (2), the front wheel and the rear wheel are respectively arranged below the seat of the wheelchair (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265384.6A CN113827409A (en) | 2021-10-28 | 2021-10-28 | Pedal auxiliary mechanism and wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265384.6A CN113827409A (en) | 2021-10-28 | 2021-10-28 | Pedal auxiliary mechanism and wheelchair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113827409A true CN113827409A (en) | 2021-12-24 |
Family
ID=78966327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111265384.6A Withdrawn CN113827409A (en) | 2021-10-28 | 2021-10-28 | Pedal auxiliary mechanism and wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113827409A (en) |
-
2021
- 2021-10-28 CN CN202111265384.6A patent/CN113827409A/en not_active Withdrawn
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Application publication date: 20211224 |