Electric vehicle head for driving wheelchair and wheelchair

Abstract

The utility model belongs to the technical field of wheelchair auxiliary equipment, and particularly relates to an electric vehicle head for driving a wheelchair and the wheelchair. The female connecting assembly comprises two connecting arms and at least two clamping columns connected with the two connecting arms; the male connecting assembly is connected with the main bracket and comprises a connector, at least two placing parts arranged on the connector and a latch hook piece hinged with the connector; according to the electric vehicle head and the wheelchair for driving the wheelchair, any clamping column placed in the corresponding placing part is limited through the lock hook piece, and limiting of the clamping column in any placing part is canceled when the lock hook piece rotates by a certain angle, so that the clamping columns are separated from the placing parts, and the clamping columns can be placed in the corresponding placing parts; therefore, the wheelchair and the headstock can be quickly assembled and disassembled.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheelchair auxiliary equipment, and particularly relates to an electric wheelchair head for wheelchair driving and a wheelchair. Background Art

[0002] A wheelchair is an important rehabilitation tool. It is not only a means of transportation for the physically disabled and people with limited mobility, but more importantly, enables them to exercise their bodies and participate in social activities with the help of a wheelchair.

[0003] At present, there are various types of wheelchairs on the market, including ordinary wheelchairs, electric wheelchairs, hand-cranked wheelchairs, intelligent wheelchairs, sports wheelchairs, etc. An ordinary wheelchair generally consists of a wheelchair frame, wheels, a braking device, and a seat backrest. An electric wheelchair is based on an ordinary wheelchair and adds an electronic assist system to reduce the physical consumption of the user. Generally, the head of an electric wheelchair is detachable from the wheelchair, but there are the following problems: the disassembly and installation structures between the head of the electric wheelchair and the wheelchair are relatively complex, and it cannot be quickly installed and disassembled, which brings inconvenience to maintenance, storage, and use.

[0004] Therefore, in order to solve the above problems, it is necessary to design an electric wheelchair head for wheelchair driving and a wheelchair. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an electric wheelchair head for wheelchair driving and a wheelchair to solve the technical problem that the head and the wheelchair cannot be quickly disassembled and installed.

[0006] To solve the above technical problem, the utility model provides an electric wheelchair head for wheelchair driving, including:

[0007] A head component, which includes: a main bracket;

[0008] A female connection component, which includes: two connecting arms and at least two clamping posts connected to the two connecting arms;

[0009] A male connection component connected to the main bracket, which includes: a connector, at least two placement parts opened on the connector, and a locking hook member hinged to the connector;

[0010] Each of the clamping posts is adapted to be placed in a corresponding placement part; wherein

[0011] The locking hook member is adapted to limit the clamping post placed in any placement part; and

[0012] The locking hook member is adapted to cancel the limit on the clamping post placed in any placement part when rotating a certain angle, so that the clamping post is separated from the placement part.

[0013] Further, the male connection component further includes: a first fixing post and a spring connected to the first fixing post; wherein

[0014] The other end of the spring is connected to the locking hook member; and

[0015] Any one of the clamping posts is adapted to be placed in the placement portion to press the locking hook member forward, so that the locking hook member rotates by a certain angle and stretches the spring;

[0016] The spring is adapted to rebound after any one of the clamping posts is placed in the placement portion, so that the locking hook member is reset and the clamping post is limited.

[0017] Furthermore, the male connection assembly further includes: a guide post disposed in the connector, a limit pin disposed in the connector, a front link hinged to the connector, and a rear link hinged to the front link; wherein

[0018] The other end of the rear link is hinged to the locking hook member;

[0019] The limit pin is adapted to limit the locking hook member.

[0020] Furthermore, the male connection assembly further includes: a slotted square tube connected to the connector, and an opening member sleeved on the slotted square tube; wherein

[0021] The opening member is movably connected to the main bracket;

[0022] The slotted square tube is slidably connected to the opening member; and

[0023] The opening member is adapted to be in close contact with the slotted square tube when locked.

[0024] Furthermore, the front-end assembly further includes: a battery pack disposed on the main bracket, a folding handlebar rotatably connected to the upper part of the main bracket, and a wire control switch disposed on the folding handlebar;

[0025] The wire control switch further includes: a traction wire; wherein

[0026] The traction wire is adapted to pass through the main bracket, the slotted square tube, the guide post and then be connected to the front link; and

[0027] The wire control switch is adapted to pull the traction wire to rotate the front link by a certain angle when opened, so as to pull the locking hook member to cancel the limit on the clamping post in any placement portion.

[0028] Furthermore, a guide rail portion and a plurality of equally spaced first threaded holes are provided on the main bracket;

[0029] The front-end assembly further includes: a sliding member slidably connected to the guide rail portion; wherein

[0030] The sliding member is movably connected to the opening member;

[0031] The sliding member is bolted to the main bracket; and

[0032] The bolt is adapted to pass through the sliding member and then engage with the first threaded hole to fix the sliding member on the first threaded hole at different positions.

[0033] Furthermore, the front head assembly further includes: a wheel frame rotatably connected to the lower part of the main bracket, a wheel hub connected to the wheel frame, and a tire sleeved on the wheel hub; wherein

[0034] the wheel frame is connected to the folding handlebar; and

[0035] the wheel frame is adapted to rotate following the rotation of the folding handlebar;

[0036] The front head assembly further includes: a connecting seat bolted to the main bracket, a connecting sleeve connected to the connecting seat, a tension spring connecting the connecting sleeve and the main bracket, an auxiliary wheel support frame slidably connected to the connecting sleeve, and auxiliary wheels provided on both sides of the auxiliary wheel support frame; wherein

[0037] The bolt is adapted to pass through the connecting seat and then engage with the first threaded hole to fix the connecting seat on the first threaded hole at different positions;

[0038] A first through hole is formed in the connecting sleeve;

[0039] At least two second threaded holes are formed in the auxiliary wheel support frame; wherein

[0040] The first through hole is concentrically arranged with any one of the second threaded holes.

[0041] Furthermore, the female connecting component further includes: a first clamp connected to the connecting arm, a connecting block hinged to the connecting arm, and a second clamp connected to the connecting block; wherein

[0042] The first clamp and the second clamp are adapted to be fixed on the wheelchair.

[0043] Furthermore, a plurality of bolt holes are equidistantly arranged on the connecting arm; wherein

[0044] The first clamp is adapted to engage with the bolt hole through a bolt to adjust the position of the first clamp on the connecting arm;

[0045] At least two arc-shaped long through portions are provided on the connecting arm;

[0046] Two rows of equidistantly arranged second through holes are provided on the connecting block; wherein

[0047] One row of the second through holes is arranged at intervals with the other row of the second through holes; and

[0048] Bolts are adapted to be placed in each of the arc-shaped long through portions and the corresponding second through holes.

[0049] On the other hand, the present utility model also provides a wheelchair, comprising:

[0050] a wheelchair body and an electric vehicle head for driving the wheelchair; wherein

[0051] the wheelchair body comprises a wheelchair cross beam and a main shaft;

[0052] the electric vehicle head for driving the wheelchair comprises a first clamp and a second clamp; and

[0053] the first clamp is sleeved on the wheelchair cross beam;

[0054] the second clamp is sleeved on the main shaft.

[0055] The beneficial effects of the present utility model are as follows:

[0056] (1). By providing a placement portion, a clamping post and a locking hook member, when the clamping post is placed in the placement portion, the locking hook member limits the clamping post placed in the placement portion, so that the connector and the connecting arm are connected. When the locking hook member rotates by a certain angle, the limitation of the clamping post in any placement portion is cancelled, so that the clamping post is separated from the placement portion, thereby achieving the effect of rapid disassembly and installation.

[0057] (2). Before any clamping post is placed in the placement portion, the locking hook member is squeezed, so that the locking hook member rotates by a certain angle and stretches the spring. After any clamping post is placed in the placement portion, the spring rebounds after being released from pressure and drives the locking hook member to reset, so that the locking hook member limits any clamping post, thereby achieving the effect of automatic limitation and convenient connection.

[0058] Other features and advantages of the present utility model will be described in the following description, and some of them will become obvious from the description or be understood by implementing the present utility model. The objectives and other advantages of the present utility model are achieved and obtained by the structures specifically pointed out in the description and the drawings.

[0059] To make the above objectives, features and advantages of the present utility model more obvious and understandable, the following preferred embodiments are specifically given below, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0060] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0061] Figure 1is a perspective view of a preferred embodiment of a local part of the present utility model;

[0062] Figure 2 is Figure 1 a partial enlarged view of area A in

[0063] Figure 3 is a perspective view of a preferred embodiment of the front head assembly of the present utility model;

[0064] Figure 4 is a perspective view of a preferred embodiment of the female connection assembly of the present utility model;

[0065] Figure 5 is a perspective view of a preferred embodiment of the overall electric vehicle head of the present utility model;

[0066] Figure 6 is a perspective view of a preferred embodiment of the front head and the wheelchair of the present utility model.

[0067] In the figure:

[0068] Front head assembly 1, main bracket 101, guide rail part 1011, first threaded hole 1012, battery pack 102, folding handlebar 103, wire control switch 104, sliding part 105, wheel bracket 106, wheel hub 107, tire 108, connecting seat 109, connecting sleeve 110, first through hole 1101, tension spring 111, auxiliary wheel support frame 112, second threaded hole 1121, auxiliary wheel 113;

[0069] Female connection assembly 2, connecting arm 201, bolt hole 2011, arc-shaped long through part 2012, clamping post 202, first hoop 203, second hoop 204, connecting block 205, second through hole 2051;

[0070] Male connection assembly 3, connector 301, placing part 3011, locking hook part 302, first fixing post 303, spring 304, guide post 305, limit pin 306, front connecting rod 307, rear connecting rod 308, slotted square tube 309, opening part 310;

[0071] Wheelchair body 4, wheelchair cross beam 401, main shaft 402. Detailed implementation manners

[0072] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0073] As shown Figures 1 to 5 in the figure, this embodiment provides an electric vehicle head for wheelchair driving, including:

[0074] A head component 1, which includes: a main bracket 101; a female connection component 2, which includes: two connecting arms 201 and at least two clamping posts 202 connected to the two connecting arms 201; a male connection component 3 connected to the main bracket 101, which includes: a connector 301, at least two placement parts 3011 opened on the connector 301, and a locking hook member 302 hinged to the connector 301; each of the clamping posts 202 is adapted to be placed in the corresponding placement part 3011; wherein the locking hook member 302 is adapted to limit the clamping post 202 placed in any of the placement parts 3011; and the locking hook member 302 is adapted to cancel the limit on the clamping post 202 placed in any of the placement parts 3011 when rotated by a certain angle, so that the clamping post 202 is separated from the placement part 3011; it is most preferred to set two clamping posts 202; it is most preferred to set two placement parts 3011.

[0075] In this embodiment, by setting the placement part 3011, the clamping post 202 and the locking hook member 302, when the clamping post 202 is placed in the placement part 3011, the locking hook member 302 limits the clamping post 202 placed in the placement part 3011, so that the connector 301 and the connecting arm 201 are connected. When the locking hook member 302 is rotated by a certain angle, the limit on the clamping post 202 placed in any of the placement parts 3011 is cancelled, so that the clamping post 202 is separated from the placement part 3011, thereby achieving the effect of quick disassembly and installation.

[0076] The male connection component 3 further includes: a first fixing post 303 and a spring 304 connected to the first fixing post 303; wherein the other end of the spring 304 is connected to the locking hook member 302; and any one of the clamping posts 202 is adapted to squeeze the locking hook member 302 before being placed in the placement part 3011, so that the locking hook member 302 rotates by a certain angle and stretches the spring 304; the spring 304 is adapted to rebound after any one of the clamping posts 202 is placed in the placement part 3011, so that the locking hook member 302 is reset and limits any one of the clamping posts 202.

[0077] In this embodiment, when any one of the clamping posts 202 squeezes the locking hook member 302 before being placed in the placement part 3011, so that the locking hook member 302 rotates by a certain angle and stretches the spring 304. After any one of the clamping posts 202 is placed in the placement part 3011, the spring 304 rebounds without being pressed and drives the locking hook member 302 to reset, so that the locking hook member 302 limits any one of the clamping posts 202, thereby achieving the effect of automatic limiting and convenient connection.

[0078] The male connection component 3 further includes: a guide post 305 disposed within the connector 301, a limit pin 306 disposed within the connector 301, a front link 307 hinged to the connector 301, and a rear link 308 hinged to the front link 307; wherein the other end of the rear link 308 is hinged to the locking hook member 302; the limit pin 306 is adapted to limit the locking hook member 302; the front link 307 is adapted to rotate a certain angle when being pulled and to pull the rear link 308 to rotate a certain angle, and the rear link 308 pulls the locking hook member 302 to rotate a certain angle, so as to achieve the effect of canceling the limit on any one of the clamping posts 202.

[0079] The male connection component 3 further includes: a slotted square tube 309 connected to the connector 301, and an opening member 310 sleeved on the slotted square tube 309; wherein the opening member 310 is movably connected to the main bracket 101; the slotted square tube 309 is slidably connected to the opening member 310; and the opening member 310 is adapted to be in close contact with the slotted square tube 309 when being locked; wherein the opening member 310 is adapted to be locked by bolts, and the slotted square tube 309 slides within the opening member 310, so as to achieve the effect of facilitating the adjustment of the distance between the main bracket 101 and the connector 301.

[0080] The vehicle head assembly 1 further includes: a battery pack 102 disposed on the main bracket 101, a folding handlebar 103 rotatably connected to the upper part of the main bracket 101, and a wire control switch 104 disposed on the folding handlebar 103; the wire control switch 104 further includes: a traction wire; wherein the traction wire is adapted to pass through the main bracket 101, the slotted square tube 309, and the guide post 305 and then be connected to the front link 307; and the wire control switch 104 is adapted to pull the front link 307 to rotate a certain angle when being turned on, so as to pull the locking hook member 302 to cancel the limit on any one of the clamping posts 202 within any one of the placement portions 3011; wherein the battery pack 102 is adapted to supply power to the hub motor, so as to achieve the effect of driving the hub 107 to rotate by the hub motor; by providing the wire control switch 104, the front link 307 is pulled to rotate a certain angle and the rear link 308 is pulled to rotate a certain angle, and the rear link 308 pulls the locking hook member 302 to rotate a certain angle, so as to achieve the effect of facilitating the operation to cancel the limit on any one of the clamping posts 202.

[0081] The main support 101 is provided with a guide rail portion 1011 and a number of equally spaced first threaded holes 1012; the front head assembly 1 further includes: a sliding member 105 slidably connected to the guide rail portion 1011; wherein the sliding member 105 is movably connected to the opening member 310; the sliding member 105 is bolted to the main support 101; and the bolt is adapted to penetrate through the sliding member 105 and then engage with the first threaded hole 1012 to fix the sliding member 105 on the first threaded holes 1012 at different positions; wherein by providing a number of first threaded holes 1012, the sliding member 105 is fixed to the main support 101 at different heights by bolts to adapt to different wheelchairs.

[0082] The front head assembly 1 further includes: a wheel frame 106 rotatably connected to the lower part of the main support 101, a hub 107 connected to the wheel frame 106, and a tire 108 sleeved on the hub 107; wherein the wheel frame 106 is connected to the folding handlebar 103; and the wheel frame 106 is adapted to rotate following the rotation of the folding handlebar 103; the front head assembly 1 further includes: a connection seat 109 bolted to the main support 101, a connection sleeve 110 connected to the connection seat 109, a tension spring 111 connected to the connection sleeve 110 and the main support 101, an auxiliary wheel support frame 112 slidably connected to the connection sleeve 110, and auxiliary wheels 113 provided on both sides of the auxiliary wheel support frame 112; wherein the bolt is adapted to penetrate through the connection seat 109 and then engage with the first threaded hole 1012 to fix the connection seat 109 on the first threaded holes 1012 at different positions; a first through hole 1101 is formed on the connection sleeve 110; at least two second threaded holes 1121 are formed on the auxiliary wheel support frame 112; wherein the first through hole 1101 and any one of the second threaded holes 1121 are concentrically arranged; by providing the connection seat 109, the connection sleeve 110, the auxiliary wheel support frame 112 and the auxiliary wheels 113, the effect of supporting the main support 101 is achieved; wherein by providing the tension spring 111, the effect of pulling the wheel frame 106, the hub 107 and the tire 108 to prevent the wheel frame 106, the hub 107 and the tire 108 from rotating is achieved; wherein when the connection seat 109 is arranged on the first threaded holes 1012 at different heights, the effect of adjusting the ground clearance of the auxiliary wheels 113 is achieved; wherein by the concentric arrangement of the first through hole 1101 and any one of the second threaded holes 1121, the effect of adjusting the ground clearance of the auxiliary wheels 113 is achieved.

[0083] The female connection assembly 2 further includes: a first hoop 203 connected to the connecting arm 201, a connecting block 205 hinged to the connecting arm 201, and a second hoop 204 connected to the connecting block 205; wherein the first hoop 203 and the second hoop 204 are adapted to be fixed on a wheelchair.

[0084] A number of bolt holes 2011 are equidistantly arranged on the connecting arm 201; the first hoop 203 is adapted to be engaged with the bolt holes 2011 through bolts to adjust the position of the first hoop 203 on the connecting arm 201; at least two arc-shaped long through portions 2012 are arranged on the connecting arm 201; two rows of second through holes 2051 are equidistantly arranged on the connecting block 205; one row of the second through holes 2051 is arranged at intervals from the other row of second through holes 2051; and bolts are adapted to be placed in each of the arc-shaped long through portions 2012 and the corresponding second through holes 2051; by arranging a number of equidistantly arranged bolt holes 2011, the position of the first hoop 203 on the connecting arm 201 is adjusted, so as to adjust the distance between the first hoop 203 and the second hoop 204 to fit different wheelchairs; it is most preferable to arrange two arc-shaped long through hole portions 2012, and the arc-shaped long through hole portion 2012 and the connecting block 205 are connected by bolts to adjust the angle between the connecting block 205 and the second hoop 204 to achieve a better fit with the wheelchair. Embodiment 2

[0085] As Figure 6 shown, this embodiment provides a wheelchair, including:

[0086] A wheelchair body 4 and the electric vehicle head for wheelchair driving; the wheelchair body 4 includes: a wheelchair cross beam 401 and a main shaft 402; the electric vehicle head for wheelchair driving includes: a first hoop 203 and a second hoop 204; and the first hoop 203 is sleeved on the wheelchair cross beam 401; the second hoop 204 is sleeved on the main shaft 402; by arranging the first hoop 203 and the second hoop 204, the effect of being conveniently fixed to the wheelchair body 4 is achieved.

[0087] All the devices (components without specific structures) selected in this application are common standard parts or parts known to those skilled in the art, and their structures and principles can all be learned by those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0088] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0089] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0090] Based on the above inspiration from the ideal embodiments of the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electric head for driving a wheelchair, characterized in that: include: A vehicle head assembly (1) comprising: a main support (101); A female connection assembly (2), comprising: two connection arms (201) and at least two clamping posts (202) connected to the two connection arms (201); A male connection assembly (3) connected to the main bracket (101), comprising: a connector (301), at least two placement portions (3011) provided on the connector (301), and a locking hook (302) hingedly connected to the connector (301); Each of the clamping posts (202) is suitable for being placed in a corresponding placement portion (3011); wherein The locking hook member (302) is suitable for limiting the position of any clamping column (202) placed in the placement portion (3011); and The locking hook member (302) is suitable for canceling the position restriction of the clamping column (202) in any placement portion (3011) when rotating at a certain angle, so that the clamping column (202) is separated from the placement portion (3011).

2. The electric wheelchair driving head as claimed in claim 1, characterized in that: The male connection assembly (3) further comprises: a first fixing column (303) and a spring (304) connected to the first fixing column (303); wherein The other end of the spring (304) is connected to the lock hook (302); and Any of the clamping columns (202) is suitable for being placed in the placement portion (3011) and pressing the lock hook member (302) before being placed, so that the lock hook member (302) rotates a certain angle and stretches the spring (304); The spring (304) is suitable for rebounding after any clamping column (202) is placed in the placement portion (3011), so as to reset the lock hook member (302) and limit the position of any clamping column (202).

3. The electric head for driving a wheelchair according to claim 2, characterized in that: The male connection assembly (3) further comprises: a guide column (305) disposed in the connector (301), a limit pin (306) disposed in the connector (301), a front connecting rod (307) hinged to the connector (301), and a rear connecting rod (308) hinged to the front connecting rod (307); wherein The other end of the rear connecting rod (308) is hinged to the locking hook member (302); The limiting pin (306) is suitable for limiting the position of the lock hook member (302).

4. The electric wheelchair driving head as claimed in claim 3, characterized in that: The male connection assembly (3) further comprises: a slotted square tube (309) connected to the connector (301), and an opening piece (310) sleeved on the slotted square tube (309); wherein The opening piece (310) is movably connected to the main bracket (101); The slotted square tube (309) is slidably connected to the opening piece (310); and The opening piece (310) is adapted to be in close contact with the slotted square tube (309) when locked.

5. The electric head for driving a wheelchair according to claim 4, characterized in that: The vehicle head assembly (1) further comprises: a battery pack (102) arranged on the main support (101), a folding handlebar (103) rotatably connected to the upper part of the main support (101), and a wire-controlled switch (104) arranged on the folding handlebar (103); The wire-controlled switch (104) further comprises: a traction wire; wherein The traction line is suitable for passing through the main support (101), the slotted square tube (309), and the guide column (305) and then connected to the front connecting rod (307); and The wire-controlled switch (104) is suitable for causing the traction wire to pull the front connecting rod (307) to rotate a certain angle when turned on, so as to pull the lock hook member (302) to cancel the limit of the clamping column (202) in any placement portion (3011).

6. The electric wheelchair driving head as claimed in claim 5, characterized in that: The main support (101) is provided with a guide rail portion (1011) and a plurality of first threaded holes (1012) arranged at equal intervals; The vehicle head assembly (1) further comprises: a sliding member (105) slidably connected to the guide rail portion (1011); wherein The sliding member (105) is movably connected to the opening member (310); The sliding member (105) is bolted to the main bracket (101); and The bolt is suitable for penetrating the sliding member (105) and then engaging with the first threaded hole (1012) to fix the sliding member (105) on the first threaded hole (1012) at different positions.

7. The electric head for driving a wheelchair according to claim 6, characterized in that: The vehicle head assembly (1) further comprises: a wheel frame (106) rotatably connected to the lower part of the main support (101), a wheel hub (107) connected to the wheel frame (106), and a tire (108) mounted on the wheel hub (107); wherein The wheel frame (106) is connected to the folding handlebar (103); and The wheel frame (106) is suitable for rotating along with the folding handlebar (103) when it rotates; The vehicle head assembly (1) further comprises: a connection seat (109) bolted to the main support (101), a connection sleeve (110) connected to the connection seat (109), a tension spring (111) connected to the connection sleeve (110) and the main support (101), an auxiliary wheel support frame (112) slidably connected to the connection sleeve (110), and auxiliary wheels (113) arranged on both sides of the auxiliary wheel support frame (112); wherein The bolt is suitable for penetrating the connection seat (109) and then engaging with the first threaded hole (1012) to fix the connection seat (109) to the first threaded hole (1012) at different positions; The connecting sleeve (110) is provided with a first through hole (1101); The auxiliary wheel support frame (112) is provided with at least two second threaded holes (1121); wherein The first through hole (1101) is arranged concentrically with any second threaded hole (1121).

8. The electric head for driving a wheelchair according to claim 7, characterized in that: The female connection assembly (2) further comprises: a first hoop (203) connected to the connection arm (201), a connection block (205) hinged to the connection arm (201), and a second hoop (204) connected to the connection block (205); wherein The first hoop (203) and the second hoop (204) are suitable for being fixed on a wheelchair.

9. The electric head for driving a wheelchair according to claim 8, characterized in that: The connecting arm (201) is provided with a plurality of bolt holes (211) arranged at equal distances; wherein The first hoop (203) is adapted to engage with the bolt hole (2011) via a bolt, so as to adjust the position of the first hoop (203) on the connecting arm (201); The connecting arm (201) is provided with at least two arc-shaped long through portions (2012); The connection block (205) is provided with two rows of second through holes (2051) arranged at equal distances; wherein One row of the second through holes (2051) is arranged at intervals from another row of the second through holes (2051); and Each of the arc-shaped long through portions (2012) and the corresponding second through holes (2051) are suitable for placing bolts.

10. A wheelchair, characterized in that: include: A wheelchair body (4) and an electric head for driving a wheelchair as claimed in any one of claims 1 to 9; wherein The wheelchair body (4) comprises: a wheelchair crossbeam (401) and a main shaft (402); The electric wheelchair driving head comprises: a first clamp (203) and a second clamp (204); and The first holding hoop (203) is mounted on the wheelchair crossbeam (401); The second clamp (204) is clamped on the main shaft (402).

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