CN212346944U - Electric wheelchair with double-folding function - Google Patents

Abstract

An electric wheelchair with double folding functions belongs to the technical field of daily necessities. The left frame is provided with a left foot pedal, a left front wheel and a left rear wheel at the lower part, a left handrail at the upper part, a left push handle at the upper part of the rear end, a right foot pedal, a right front wheel and a right rear wheel at the lower end of the right frame, a right handrail at the upper part of the rear end and a right push handle at the upper part of the rear end; a chair seat supporting cloth and a chair back supporting cloth; the electric controller is arranged on the right frame, and the manual operation controller is arranged at the front end of the right handrail; the frame transverse folding mechanism is connected between the left frame and the right frame; the electric controller is connected with the battery; the method is characterized in that: a left push handle folding mechanism is arranged between the upper rear end of the left frame and the left push handle, a right push handle folding mechanism is arranged between the upper rear end of the right frame and the right push handle, and the battery is arranged on the frame transverse folding mechanism. Reducing the transverse folding size; the collection requirement under the state that the space is limited is met; the interference influence on the folding or unfolding of the left and the right frames can not be generated.

Description

Electric wheelchair with double-folding function

Technical Field

The utility model belongs to the technical field of daily life articles for use, concretely relates to electronic wheelchair car with two folding functions.

Background

The electric wheelchair is a tool for riding instead of walking for the disabled, the old and the weak, the people who seek medical treatment and tend to recover from diseases and the like. Technical information relating to electric wheelchair vehicles is largely available in the published chinese patent documents, and is exemplified by CN2745544Y (multifunctional electric wheelchair), CN201379725Y (obstacle avoidance electric wheelchair), CN101589979B (multifunctional electric wheelchair), CN201684098U (electric wheelchair), CN102764185B (electric wheelchair), CN202682214U (electric wheelchair), CN103202748A (backward tilting prevention electric wheelchair), CN201379725Y (obstacle avoidance electric wheelchair), and CN302198767U (four-wheel electric vehicle), to name a few.

In order to reduce the space occupied by the electric wheelchair in the standby state, the folding electric wheelchair is popular among people including the above group, and technical information related to the folding electric wheelchair, such as CN204521270U (a folding wheelchair), CN100553599C (seat folding mechanism), CN107468438A (folding electric wheelchair), and CN102688124B (linked flat electric wheelchair), etc., is also visible in the published chinese patent documents.

Typically, the wheelchair folding mechanism proposed in CN201719459U is a wheelchair folding mechanism, in which the backrest, i.e. the backrest, and the seat cushion, i.e. the seat, are made of various fabrics according to the required materials, so that the left and right symmetric frames with the same structure can be folded oppositely to form a flat shape when folded, thereby significantly reducing the space in the storage state, but because a pair of pushers (e.g. left and right pushers) of the frame structure system cannot be folded according to the requirement when stored, the height of the storage space is critical when vertically stored, and the width or depth (depth) of the storage space is critical when horizontally stored, which is very embarrassing when storing in the space with a short elbow. Further, since the patent is directed to a non-electric wheelchair and a structure that is pushed by a caregiver, no technical teaching is given as to how to prevent components such as a battery from being affected by folding while using an electric wheelchair. Based on the aforementioned shortcomings of CN201719459U, it is necessary to make reasonable improvements, and the technical solutions described below are made in this context.

SUMMERY OF THE UTILITY MODEL

The task of the utility model is to provide a help make under non-user state that a pair of frame fold in opposite directions and can show and reduce horizontal folding size and reduce the occupation to the space, be favorable to when the collection can reduce the size of the direction of height of a pair of frame through the folding of pushing hands as required and can satisfy the collection requirement under the confined state in the space, be of value to the position that rationally sets up the battery and can avoid folding or expand the electronic wheelchair that has two folding functions that produce the interference influence to the frame.

The task of the utility model is accomplished like this, an electronic wheelchair with two folding functions, including a left frame and a right frame, this left frame and right frame correspond to each other about, have set gradually a left footboard, a left front wheel and a left rear wheel in the lower part of left frame from the front to the back, and be provided with a left handrail in the upper portion of left frame, and be provided with a left push handle in the rear end upper portion of left frame, have set gradually a right footboard, a right front wheel and a right rear wheel in the lower extreme of right frame from the front to the back, and be provided with a right handrail in the rear end upper portion of right frame, and be provided with a right push handle in the rear end upper portion of right frame; the left edge part of the chair seat supporting cloth is fixed with the upper part of the left frame, the right edge part of the chair seat supporting cloth is fixed with the upper part of the right frame, the upper part of the left edge part of the chair back supporting cloth is fixedly sleeved on the left push handle, the lower part of the left edge part is fixed with the rear end of the left frame, the upper part of the right edge part of the chair back supporting cloth is fixedly sleeved on the right push handle, and the lower part of the right edge part is fixed with the rear end of the right frame; the electric controller is arranged on the right frame, the manual operation controller is arranged at the front end of the right handrail, and the manual operation controller is controlled by the electric controller in a remote control mode; the frame transverse folding mechanism is used for enabling the left frame and the right frame to be folded oppositely or to be mutually repelled, and is connected between the left frame and the right frame; the electric controller is electrically connected with the battery; is characterized in that a left push handle folding mechanism is arranged between the upper rear end of the left frame and the left push handle, a right push handle folding mechanism is arranged between the upper rear end of the right frame and the right push handle, and the battery is arranged on the frame transverse folding mechanism.

In a specific embodiment of the present invention, the left frame has a left frame lower horizontal tube and a left frame upper horizontal tube, the front end of the left frame lower horizontal tube and the front end of the left frame upper horizontal tube are connected by a left frame front transition longitudinal tube, and the rear end of the left frame lower horizontal tube and the rear end of the left frame upper horizontal tube are connected by a left frame rear transition tube; the right frame is provided with a right frame lower transverse pipe and a right frame upper transverse pipe, the front end of the right frame lower transverse pipe is connected with the front end of the right frame upper transverse pipe through a right frame front transition longitudinal pipe, and the rear end of the right frame lower transverse pipe is connected with the rear end of the right frame upper transverse pipe through a right frame rear transition pipe; a left pedal fixing folding arm is folded and unfolded downwards at the front end of the left frame lower transverse pipe, a right pedal fixing folding arm is folded and unfolded downwards at the front end of the right frame lower transverse pipe, a left push handle connecting pipe is folded and unfolded upwards at the rear end of the left frame upper transverse pipe, and a right push handle connecting pipe is folded and unfolded upwards at the rear end of the right frame upper transverse pipe; the left foot pedal is up and down arranged on the left foot pedal fixing folding arm in an adjusting way, the left front wheel is arranged at the front end of the left frame lower transverse pipe, the left rear wheel is arranged at the junction part of the left frame lower transverse pipe and the lower end of the left frame rear transition pipe, a left rear wheel driving motor is arranged on one side of the left rear wheel facing the right rear wheel, the left handrail is provided with a left handrail supporting pipe, the rear end of the left handrail supporting pipe is fixed with the front side of the left push handle connecting pipe, the middle part of the left handrail supporting pipe is fixed with the left frame upper transverse pipe through the left supporting pipe, and the left push handle corresponds to the upper part of the left push handle connecting pipe; the right foot pedal is up-down movably arranged on the right foot pedal fixed folding arm, the right front wheel is arranged at the front end of the right frame lower transverse tube, the right rear wheel is arranged at the junction part of the right frame lower transverse tube and the lower end of the right frame rear transition tube, a right rear wheel driving motor is arranged on one side of the right rear wheel facing the left rear wheel, the right handrail is provided with a right handrail supporting tube, the rear end of the right handrail supporting tube is fixed with the front side of the right push handle connecting tube, the middle part of the right handrail supporting tube is fixed with the right frame upper transverse tube through a right supporting tube, and the right push handle corresponds to the upper part of the right push handle connecting tube; the left rear wheel driving motor and the right rear wheel driving motor are electrically connected with the electric controller; the left edge part of the seat support cloth is fixed with the left frame upper cross pipe, and the right edge part of the seat support cloth is fixed with the right frame upper cross pipe; the lower part of the left edge part of the chair back supporting cloth is fixed with a left push handle connecting pipe, the lower part of the right edge part of the chair back supporting cloth is fixed with a right push handle connecting pipe, the left push handle corresponds to the upper part of the left push handle connecting pipe, and the right push handle corresponds to the upper part of the right push handle connecting pipe; the frame transverse folding mechanism is connected between the left frame lower transverse pipe and the left frame upper transverse pipe and between the right frame lower transverse pipe and the right frame upper transverse pipe; the battery is in a rectangular shape; the left push handle folding mechanism is arranged between the upper part of the left push handle connecting pipe and the lower end of the left push handle, and the right push handle folding mechanism is arranged between the upper part of the right push handle connecting pipe and the lower end of the right push handle; the manual operation controller is arranged at the front end of the right handrail supporting pipe.

In another specific embodiment of the present invention, a locking pin latch fitting sleeve is provided at the lower end of the right push handle; the structure of the left push handle folding mechanism arranged between the upper part of the left push handle connecting pipe and the lower end of the left push handle is the same as that of the right push handle folding mechanism arranged between the upper part of the right push handle connecting pipe and the lower end of the right push handle, the right push handle folding mechanism comprises a locking sleeve, a hinged plate, a right push handle locking pin, a locking pin actuating spanner and a hinged shaft, the lower end of the locking sleeve is fixed with the upper end of the right push handle connecting pipe, the upper end of the locking sleeve extends out of the upper end surface of the right push handle connecting pipe, the locking sleeve is provided with a locking sleeve cavity, one side of the locking sleeve cavity facing the hinged plate is provided with an opening, a pin hole is arranged on the bottom wall of the locking sleeve cavity and at a position corresponding to the right push handle locking pin, the hinged shaft is arranged on the lower part of one side of the locking sleeve facing the hinged plate, and the lower end of the, and the upper end of the hinged plate is fixed with the right push handle, one end of the right push plate locking pin, which faces the locking pin actuating spanner, is connected with the lower end of the locking pin actuating spanner after sliding through the hinged plate, the middle part of the right push handle locking pin is in sliding fit with a sleeve cavity of the locking pin latch matching sleeve, one end of the right push handle locking pin, which faces the pin hole, is latched into or withdrawn from the pin hole, the locking pin actuating spanner corresponds to the rear side of the hinged plate, and the upper end of the locking pin actuating spanner extends out of the upper surface of the hinged plate.

In a further embodiment of the invention, a right push bar limiting nut is provided at the end of the right push bar facing the locking pin actuating wrench for connecting the right push bar to the locking pin actuating wrench, and a latch head with a diameter greater than the diameter of the right push bar is formed at the end of the right push bar facing the pin hole, which latch head latches into or withdraws from the pin hole, and a spring is provided in the middle of the right push bar and in the sleeve chamber, one end of the spring being supported on the latch head step of the latch head and the other end of the spring being supported on the hinge plate.

In a further specific embodiment of the present invention, a pair of hinge shaft fixing lugs are formed at a lower end of the locking sleeve and toward one side of the hinge plate, the hinge shaft is inserted and disposed on the pair of hinge shaft fixing lugs and a hinge shaft limiting nut is screwed on an end of the hinge shaft; a pair of hinge lugs extending from the lower end of the hinge plate are hinged to the middle of the hinge shaft at a position corresponding to the space between the pair of hinge fixing lugs, and a bushing is sleeved on the hinge shaft and at a position corresponding to the space between the pair of hinge lugs.

In still another specific embodiment of the present invention, a right pushing handle connecting pipe sleeve is embedded in the upper end orifice of the right pushing handle connecting pipe, and a right pushing handle sleeve is embedded in the lower end orifice of the right pushing handle.

In a more specific embodiment of the present invention, a left support tube is welded to the right side of the horizontal tube on the left frame, a left support cloth left edge fixing pressing plate is disposed above the left support tube, a right support tube is welded to the left side of the horizontal tube on the right frame, and a seat support cloth right edge fixing pressing plate is disposed above the right support tube; the left edge part of the seat support cloth is clamped between the left edge fixing pressing plate and the left support tube of the seat support cloth, the left edge fixing pressing plate and the left support tube of the seat support cloth are fixed by a left edge fixing pressing plate screw of the seat support cloth, the right edge part of the seat support cloth is clamped between the right edge fixing pressing plate and the right support tube of the seat support cloth, and the right edge fixing pressing plate and the right support tube of the seat support cloth are fixed by a right edge fixing pressing plate screw of the seat support cloth; the frame transverse folding mechanism is connected with the left support pipe and the right support pipe.

In yet another specific embodiment of the present invention, the frame lateral folding mechanism comprises a first folding bar i, a second folding bar ii, a third folding bar iii, a fourth folding bar iv, a first connecting bar i, a second connecting bar ii and a third connecting bar iii, the left end of the first folding bar i is hinged to a first folding bar left hinge base i through a first hinge pin i, the first folding bar left hinge base i is fixed to the right side of the left frame lower horizontal tube, the right end of the first folding bar i is fixed to the right support tube, the middle of the first folding bar i is hinged to the middle of the second folding bar ii through a second hinge pin ii, the second folding bar ii is located in front of the first folding bar i and the left end of the second folding bar ii is fixed to the left support tube, the right end of the second folding bar ii is hinged to a second folding bar right base ii through a third hinge pin iii, the right hinged seat II of the second folding rod is fixed with the left side of the lower transverse tube of the right frame, the third folding rod III is positioned at the rear side of the first folding rod I and is parallel to the first folding rod I, the left end of the third folding rod III is hinged with the lower end of the rear transition tube of the left frame, the right end of the third folding rod III is fixed with the right supporting tube, the middle part of the third folding rod III is hinged with the middle part of a fourth folding rod IV through a fourth hinge pin shaft IV, the fourth folding rod IV is positioned at the rear side of the third folding rod III and is parallel to the second folding rod II, the left end of the fourth folding rod IV is fixed with the left supporting tube, the right end of the fourth folding rod IV is hinged with the left end of a third connecting rod III through a fifth hinge pin shaft V, the right end of the third connecting rod III is connected with the rear transition tube of the right frame, the first connecting rod I is hinged between the left end of the fourth folding rod IV and the upper end of the rear transition tube of the left frame, the second connecting rod II is hinged between the right end of the third folding rod III and the upper end of the rear transition pipe of the right frame; the battery set up between the left end of first folding rod I and third folding rod III.

In a more specific embodiment of the present invention, a left frame balance wheel rod is connected to the right side of the left frame rear transition pipe, and a pair of anti-back-tilting left balance wheels is arranged at the rear end of the left frame balance wheel rod; the left side of the right frame rear transition pipe is connected with a right frame balance wheel rod, and the rear end of the right frame balance wheel rod is provided with a pair of anti-back-tipping right balance wheels.

In yet another specific embodiment of the present invention, a pair of battery fixing strips spaced from and parallel to each other is fixed between the left ends of the first folding rod i and the third folding rod iii, and the battery is fixed between the pair of battery fixing strips; and a pair of folding rod connecting laths which are mutually spaced and parallel are fixed between the right ends of the second folding rod II and the fourth folding rod IV.

The technical scheme provided by the utility model the technical effect lie in: because the frame transverse folding mechanism enables the left and right frames to be folded oppositely under the non-use state, the transverse folding size can be obviously reduced, and the occupation of space is reduced; because the left and right push handle folding mechanisms are respectively arranged between the upper rear end of the left frame and the left push handle and between the upper rear end of the right frame and the right push handle, the sizes of the left and right frames in the height direction can be reduced according to the requirements when the bicycle is collected, and the collection requirement under the condition that the space is limited is met; because the battery is arranged on the frame transverse folding mechanism, the folding or unfolding of the left frame and the right frame cannot be interfered.

Drawings

Fig. 1 is a structural diagram of an embodiment of the present invention.

Fig. 2 is a cross-sectional view of the right push handle folding mechanism shown in fig. 1.

Fig. 3 is a schematic view of fig. 1 in a folded state.

Fig. 4 is an enlarged view of a portion a of fig. 3.

Detailed Description

In order to make the technical essence and advantages of the present invention more clear, the applicant below describes in detail the embodiments, but the description of the embodiments is not a limitation of the present invention, and any equivalent changes made according to the inventive concept, which are only formal and not essential, should be considered as the technical scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are based on the current position of fig. 1, and thus, should not be interpreted as a specific limitation to the technical solution provided by the present invention.

Referring to fig. 1, there are shown a left frame 1 and a right frame 2, the left frame 1 and the right frame 2 corresponding to each other left and right, a left step plate 11, a left front wheel 12 and a left rear wheel 13 being provided in this order from front to rear (in terms of the traveling direction of the vehicle, hereinafter the same) in the lower portion of the left frame 1, and a left handle 14 being provided in the upper portion of the left frame 1, a left push handle 15 being provided in the upper portion of the rear end of the left frame 1, a right step plate 21, a right front wheel 22 and a right rear wheel 23 being provided in this order from front to rear in the lower end of the right frame 2, and a right handle 24 being provided in the upper portion of the rear end of the right frame 2, and a right push handle 25 being provided in the upper portion of the rear end of the right frame 2; a seat support cloth 3 and a back support cloth 4 are shown, the left edge part of the seat support cloth 3 is fixed with the upper part of the left frame 1, the right edge part of the seat support cloth 3 is fixed with the upper part of the right frame 2, the upper part of the left edge part of the back support cloth 4 is fixedly sleeved on the left push handle 15 through a left cloth ferrule 41, the lower part of the left edge part is fixed with the rear end of the left frame 1, the upper part of the right edge part of the back support cloth 4 is fixedly sleeved on the right push handle 25 through a right cloth ferrule 42, and the lower part of the right edge part is fixed with the rear end of the right frame 2; an electric controller 10 and a manual operation controller 20 are shown, the electric controller 10 is provided on the right frame 2, the manual operation controller 20 is provided at the front end of the right armrest 24, and the manual operation controller 20 is controlled by the electric controller 10 in a remote control manner; a frame transverse folding mechanism 5 for enabling the left frame 1 and the right frame 2 to be folded towards each other or to be mutually exclusive is shown, wherein the frame transverse folding mechanism 5 is connected between the left frame 1 and the right frame 2; a battery 6 is shown, with the aforementioned electrical controller 10 electrically connected to the battery 6.

The applicant needs to state that: if the aforementioned manual operation controller 20 is disposed at the front end of the left armrest 14 and the electric controller 10 is also transferred to the left frame 1, so as to satisfy the left-handed person or the requirement of convenient operation of the manual operation controller 20 by the left hand, it should be considered that the technical scope of the present invention is covered by the patent protection scope.

As the technical scheme provided by the utility model: a left push handle folding mechanism 7 is provided between the upper rear end of the left frame 1 and the left push handle 15, a right push handle folding mechanism 8 is provided between the upper rear end of the right frame 2 and the right push handle 25, and the battery 6 is provided on the frame lateral folding mechanism 5.

Continuing to refer to fig. 1, the left frame 1 has a left frame lower transverse tube 16 and a left frame upper transverse tube 17, the front end of the left frame lower transverse tube 16 is connected with the front end of the left frame upper transverse tube 17 by a left frame front transition longitudinal tube 18a, and the rear end of the left frame lower transverse tube 16 is connected with the rear end of the left frame upper transverse tube 17 by a left frame rear transition tube 18 b; the right frame 2 has a right frame lower cross tube 26 and a right frame upper cross tube 27, the front end of the right frame lower cross tube 26 is connected with the front end of the right frame upper cross tube 27 by a right frame front transition longitudinal tube 28a, and the rear end of the right frame lower cross tube 26 is connected with the rear end of the right frame upper cross tube 27 by a right frame rear transition tube 28 b; a left step fixing folding arm 161 is folded and unfolded downwards at the front end of the left frame lower transverse pipe 16, a right step fixing folding arm 261 is folded and unfolded downwards at the front end of the right frame lower transverse pipe 26, a left push handle connecting pipe 171 is folded and unfolded upwards at the rear end of the left frame upper transverse pipe 17, and a right push handle connecting pipe 271 is folded and unfolded upwards at the rear end of the right frame upper transverse pipe 27; the left step plate 11 is vertically adjusted and installed on the left step plate fixed folding arm 161, the left front wheel 12 is installed on the front end of the left frame lower cross tube 16, the left rear wheel 13 is installed on the boundary portion of the left frame lower cross tube 16 and the lower end of the left frame rear transition tube 18b, and a left rear wheel driving motor 131 is installed on the side of the left rear wheel 13 facing the right rear wheel 23, the left armrest 14 has a left armrest supporting tube 141, the rear end of the left armrest supporting tube 141 is fixed to the front side of the left push handle connecting tube 171, the middle portion of the left armrest supporting tube 141 is fixed to the left frame upper cross tube 17 through a left supporting tube 1411, and the left push handle 15 corresponds to the upper portion of the left push handle connecting tube 171; the right step plate 21 is vertically adjusted and disposed on the right step plate fixed knuckle 261, the right front wheel 22 is disposed at the front end of the right frame lower cross tube 26, the right rear wheel 23 is disposed at the boundary portion between the right frame lower cross tube 26 and the lower end of the right frame rear transition tube 28b, and a right rear wheel drive motor 231 is disposed on the side of the right rear wheel 23 facing the left rear wheel 13, the right armrest has a right armrest support tube 241, the rear end of the right armrest support tube 241 is fixed to the front side of the right push handle connecting tube 271, the middle portion of the right armrest support tube 241 is fixed to the right frame upper cross tube 27 via a right support tube 2411, and the right push handle 25 corresponds to the upper portion of the right push handle connecting tube 271; the left rear wheel drive motor 131 and the right rear wheel drive motor 231 are electrically connected to the electric controller 10; the left edge part of the seat support cloth 3 is fixed with the left frame upper horizontal pipe 17, and the right edge part of the seat support cloth 3 is fixed with the right frame upper horizontal pipe 27; the lower part of the left edge of the chair back cloth support 4 is fixed with the back side of the left push handle connecting pipe 171, the lower part of the right edge of the chair back cloth support 4 is fixed with the back side of the right push handle connecting pipe 271, the left push handle 15 corresponds to the upper part of the left push handle connecting pipe 171, and the right push handle 25 corresponds to the upper part of the right push handle connecting pipe 271; the frame transverse folding mechanism 5 is connected between the left frame lower transverse tube 16 and the left frame upper transverse tube 17 and the right frame lower transverse tube 26 and the right frame upper transverse tube 27; the battery 6 has a rectangular shape; the left push handle folding mechanism 7 is disposed between the upper portion of the left push handle connecting tube 171 and the lower end of the left push handle 15, and the right push handle folding mechanism 8 is disposed between the upper portion of the right push handle connecting tube 271 and the lower end of the right push handle 25; the manual controller 20 is provided at the front end of the right armrest support tube 241.

Referring to fig. 2 and 4 in conjunction with fig. 1, as shown in fig. 2, a locking pin latch fitting sleeve 251 is provided at the lower end of the right push handle 25; the structure of the left push bar folding mechanism 7 provided between the upper portion of the left push bar connecting pipe 171 and the lower end of the left push bar 15 is the same as that of the right push bar folding mechanism 8 provided between the upper portion of the right push bar connecting pipe 271 and the lower end of the right push bar 25, so that the applicant will hereinafter describe only the right push bar folding mechanism 8, the right push bar folding mechanism 8 including a locking sleeve 81, a hinge plate 82, a right push bar locking pin 83, a locking pin actuating wrench 84 and a hinge shaft 85, the lower end of the locking sleeve 81 being fixed to the upper end of the right push bar connecting pipe 271, the upper end of the locking sleeve 81 projecting out of the upper end face of the right push bar connecting pipe 271, the locking sleeve 81 being formed with a locking sleeve cavity 811, the side of the locking sleeve cavity 811 facing the hinge plate 82 being open, i.e. forming an opening, a pin hole 8111 being formed in the cavity bottom wall of the locking sleeve cavity 811 and at a position corresponding to the right push bar locking pin 83, a hinge shaft 85 of the hinge plate is provided at a lower portion of a side of the locking sleeve 81 facing the hinge plate 82, a lower end of the hinge plate 82 is hinged to the hinge shaft 85, and an upper end of the hinge plate 82 is fixed to the aforementioned right push handle 25, a right push plate locking pin 83 is connected to a lower end of the locking pin actuating wrench 84 after slidably passing through the hinge plate 82 toward an end of the locking pin actuating wrench 84, a middle portion of the right push handle locking pin 83 is slidably engaged with a bushing chamber 2511 of the locking pin latching bushing 251, and an end of the right push handle locking pin 83 facing the pin hole 8111 is latched into or withdrawn from the pin hole 8111, the locking pin actuating wrench 84 corresponds to a rear side of the hinge plate 82 and an upper end of the locking pin actuating wrench.

Continuing with FIGS. 2 and 4, a right push bar retaining nut 831 for connecting the right push bar retaining pin 83 to the locking pin actuating wrench 84 is provided at the end of the right push bar retaining pin 83 facing the locking pin actuating wrench 84, and a latch head 832 (shown in FIG. 2) having a diameter greater than the diameter of the right push bar retaining pin 83 is provided at the end of the right push bar retaining pin 83 facing the pin bore 8111, the latch head 832 being latched into or withdrawn from the pin bore 8111, a spring 833 being provided in the middle of the right push bar retaining pin 83 and within the bushing cavity 2511, one end of the spring 833 being supported on a latch head step 8321 of the latch head 832, and the other end of the spring 833 being supported on the hinge plate 82.

As shown in fig. 4, a pair of hinge shaft fixing lugs 812 are formed at the lower end of the locking sleeve 81 and on the side facing the hinge plate 82, and the hinge shaft 85 is inserted through the pair of hinge shaft fixing lugs 812 and a hinge shaft limiting nut 851 is screwed on the end of the hinge shaft 85; a pair of hinge plate hinge lugs 821 extend from the lower end of the hinge plate 82, the hinge plate lugs 821 are hinged to the middle of the hinge shaft 85 at a position corresponding to between the hinge shaft fixing lugs 812, and a bushing 852 is sleeved on the hinge shaft 85 and at a position corresponding to between the hinge plate lugs 821.

When the left and right push handles 15 and 25 are to be changed from the folded state shown in fig. 3 and 4 to the folded state shown in fig. 1 and 2, for example, the operation of the right push handle folding mechanism 8 is performed such that the operator or an attendant pulls the upper end of the locking pin actuating wrench 84 (the position state shown in fig. 1 and 2) in a direction away from the locking sleeve 81, and the right push handle locking pin 83 is pulled by the operator or an attendant, and the right push handle locking pin 83 is withdrawn from the pin hole 8111 in a state where the spring 833 is compressed, and at this time, the right push handle 25 is released from the engagement (engagement) with the upper end of the right push handle connecting pipe 271, and can be pulled out to assume the state shown in fig. 3 and 4. In this state, the right cloth loop 42 at the upper edge of the seat back cloth 4 is also folded and unfolded with the right push handle 25, and vice versa. Since the operation of the left push-handle folding mechanism 7 is the same as that of the right push-handle folding mechanism 8 and both are operated at the same time, the applicant is not described in detail.

As shown in fig. 2 to 4, a right push handle connection tube sleeve 2711 is fitted to the upper end nozzle of the right push handle connection tube 271, and a right push handle sleeve 252 is fitted to the lower end nozzle of the right push handle 25.

Continuing with fig. 1, a left support tube 172 is welded to the right side of the left frame upper cross tube 17, a seat cloth supporting left edge fixing pressing plate 1721 is arranged above the left support tube 172, a right support tube 272 is welded to the left side of the right frame upper cross tube 27, and a seat cloth supporting right edge fixing pressing plate 2721 is arranged above the right support tube 272; the left edge part of the seat support cloth 3 is clamped between the left edge fixing pressing plate 1721 and the left support tube 172 of the seat support cloth, the left edge fixing pressing plate 1721 and the left support tube 172 of the seat support cloth are fixed by a left edge fixing pressing plate screw 17211 of the seat support cloth, the right edge part of the seat support cloth 3 is clamped between the right edge fixing pressing plate 2721 and the right support tube 272 of the seat support cloth, and the right edge fixing pressing plate 2721 and the right support tube 272 of the seat support cloth are fixed by a right edge fixing pressing plate screw 27211 of the seat support cloth; the frame lateral folding mechanism 5 is connected to the left and right support tubes 172 and 272.

Fig. 1 also shows that the lower part of the left edge of the backrest cloth 4 is fixed between the left cloth spreading plate 43 and the rear side of the left push handle connecting pipe 171 by pressing the left cloth pressing plate 43, and the left cloth pressing plate 43 is fixed to the left push handle connecting pipe 171 by a screw. Similarly, the lower portion of the right edge portion of the seat back cloth support 4 is pressed and fixed between the right cloth pressing plate 44 and the rear side of the right push handle connecting pipe 271 by the right cloth pressing plate 44, and the right cloth pressing plate 44 is fixed to the right push handle connecting pipe 272 by a screw.

Continuing to refer to fig. 1, the transverse frame folding mechanism 5 includes a first folding bar i 51, a second folding bar ii 52, a third folding bar iii 53, a fourth folding bar iv 54, a first link i 55, a second link ii 56 and a third link iii 57, the left end of the first folding bar i 51 is hinged to a first left folding bar hinge seat i 512 through a first hinge pin i 511, the first left folding bar hinge seat i 512 is fixed to the right side of the left frame lower cross tube 16, the right end of the first folding bar i 51 is fixed to the right support tube 272, the middle of the first folding bar i 51 is hinged to the middle of the second folding bar ii 52 through a second hinge pin ii 513, the second folding bar ii 52 is located at the front side of the first folding bar i 51 and the left end of the second folding bar ii 52 is fixed to the left support tube 172, and the right end of the second folding bar ii 52 is hinged to a second right folding bar hinge pin 522 through a third hinge pin 521, the second folding rod right hinge base II 522 is fixed with the left side of the right frame lower cross tube 26, the third folding rod III 53 is positioned at the rear side of the first folding rod I51 and is parallel to the first folding rod I51, the left end of the third folding rod III 53 is hinged with the lower end of the left frame rear transition tube 18b, the right end of the third folding rod III 53 is fixed with the right support tube 272, the middle part of the third folding rod III 53 is hinged with the middle part of the fourth folding rod IV 54 through a fourth hinge pin IV 531, the fourth folding rod IV 54 is positioned at the rear side of the third folding rod III 53 and is parallel to the second folding rod II 52, the left end of the fourth folding rod IV 54 is fixed with the left support tube 172, the right end is hinged with the left end of the third connecting rod III 57 through a fifth hinge pin V, the right end of the third connecting rod 57 is connected with the right frame rear transition tube 28b, the left end of the first connecting rod I55 is hinged with the left frame rear transition tube 541 of the left frame rear transition tube 18b, the second connecting rod II 56 is hinged between the right end of the third folding rod III 53 and the upper end of the right frame rear transition pipe 28 b; the aforementioned battery 6 is disposed between the left ends of the first folding bar i 51 and the third folding bar iii 53.

As shown in fig. 1, preferably, a left frame stabilizer bar 19 is connected to the right side of the left frame rear transition pipe 18b, and a pair of anti-back-tilting left stabilizers 191 are provided at the rear end of the left frame stabilizer bar 19; a right frame stabilizer bar 29 is connected to the left side of the right frame rear transition pipe 28b, and a pair of anti-backward-tilting right stabilizers 291 is provided at the rear end of the right frame stabilizer bar 29.

A pair of battery fixing strips 58 which are spaced from each other and are parallel to each other are fixed between the left ends of the first folding bar i 51 and the third folding bar iii 53, and the battery 6 is fixed between the pair of battery fixing strips 58; a pair of folding bar connecting strips 59 which are parallel to each other with a space therebetween are fixed between the right ends of the second folding bar ii 52 and the fourth folding bar iv 54.

Referring to fig. 3, for convenience and clarity of the relevant parts, the applicant, although removing the seat support cloth 3 and the back support cloth 4, which have been mentioned several times above, from fig. 3, does not confuse understanding of the present invention. When the left and right frames 1, 2 shown in fig. 1 are changed from the horizontal folding state shown in fig. 3, i.e., the left and right frames 1, 2 are in the folding state, the right ends of the first folding link i 51 and the third folding link iii 53 of the structural system of the frame horizontal folding mechanism 5 having the scissors effect are rotated counterclockwise by an angle, and the left ends of the second folding link ii 52 and the fourth folding link iii 54 are rotated clockwise by an angle, so that the left and right frames 1, 2 are folded toward each other and the battery 6 is in the vertical state, by pulling up the seat cloth 3 shown in fig. 1. The left and right push handle folding mechanisms 7, 8 can be folded as described above by the applicant to assume the state shown in fig. 3 and 4 depending on the space conditions, and the operation of unfolding is reversed from the above, and therefore, the description thereof is not repeated.

To sum up, the technical solution provided by the present invention remedies the defects in the prior art, successfully completes the invention task, and faithfully embodies the technical effects mentioned in the above technical effect column by the applicant.

Claims (10)

1. An electric wheelchair with a double-folding function comprises a left frame (1) and a right frame (2), wherein the left frame (1) and the right frame (2) correspond to each other left and right, a left foot pedal (11), a left front wheel (12) and a left rear wheel (13) are sequentially arranged at the lower part of the left frame (1) from front to back, a left handrail (14) is arranged at the upper part of the left frame (1), a left push handle (15) is arranged at the upper part of the rear end of the left frame (1), a right foot pedal (21), a right front wheel (22) and a right rear wheel (23) are sequentially arranged at the lower end of the right frame (2) from front to back, a right handrail (24) is arranged at the upper part of the rear end of the right frame (2), and a right push handle (25) is arranged at the upper part of the rear end of the right frame (2); the left edge part of the chair seat supporting cloth (3) is fixed with the upper part of the left frame (1), the right edge part of the chair seat supporting cloth (3) is fixed with the upper part of the right frame (2), the upper part of the left edge part of the chair back supporting cloth (4) is fixedly sleeved on the left push handle (15), the lower part of the left edge part is fixed with the rear end of the left frame (1), the upper part of the right edge part of the chair back supporting cloth (4) is fixedly sleeved on the right push handle (25), and the lower part of the right edge part is fixed with the rear end of the right frame (2); an electric controller (10) and a manual operation controller (20), the electric controller (10) is arranged on the right frame (2), the manual operation controller (20) is arranged at the front end of the right handrail (24), and the manual operation controller (20) is controlled by the electric controller (10) in a remote control mode; the frame transverse folding mechanism (5) is used for enabling the left frame (1) and the right frame (2) to be folded oppositely or to be repelled mutually, and the frame transverse folding mechanism (5) is connected between the left frame (1) and the right frame (2); a battery (6), wherein the electric controller (10) is electrically connected with the battery (6); the folding bicycle is characterized in that a left push handle folding mechanism (7) is arranged between the rear end of the upper part of the left bicycle frame (1) and the left push handle (15), a right push handle folding mechanism (8) is arranged between the rear end of the upper part of the right bicycle frame (2) and the right push handle (25), and the battery (6) is arranged on the transverse bicycle frame folding mechanism (5).

2. The electric wheelchair with a double folding function as claimed in claim 1, wherein the left frame (1) has a left frame lower cross tube (16) and a left frame upper cross tube (17), the front end of the left frame lower cross tube (16) and the front end of the left frame upper cross tube (17) are connected by a left frame front transition longitudinal tube (18a), and the rear end of the left frame lower cross tube (16) and the rear end of the left frame upper cross tube (17) are connected by a left frame rear transition tube (18 b); the right frame (2) is provided with a right frame lower transverse pipe (26) and a right frame upper transverse pipe (27), the front end of the right frame lower transverse pipe (26) is connected with the front end of the right frame upper transverse pipe (27) through a right frame front transition longitudinal pipe (28a), and the rear end of the right frame lower transverse pipe (26) is connected with the rear end of the right frame upper transverse pipe (27) through a right frame rear transition pipe (28 b); a left pedal fixing folding arm (161) is folded and unfolded downwards at the front end of the left frame lower transverse pipe (16), a right pedal fixing folding arm (261) is folded and unfolded downwards at the front end of the right frame lower transverse pipe (26), a left push handle connecting pipe (171) is folded and unfolded upwards at the rear end of the left frame upper transverse pipe (17), and a right push handle connecting pipe (271) is folded and unfolded upwards at the rear end of the right frame upper transverse pipe (27); the left foot board (11) is arranged on the left foot board fixed folding arm (161) in a vertically adjustable way, the left front wheel (12) is arranged at the front end of the left frame lower transverse pipe (16), the left rear wheel (13) is arranged at the junction part of the lower transverse pipe (16) of the left frame and the lower end of the rear transition pipe (18b) of the left frame, and a left rear wheel drive motor (131) is provided on the side of the left rear wheel (13) facing the right rear wheel (23), the left armrest (14) has a left armrest support tube (141), the rear end of the left armrest supporting tube (141) is fixed with the front side of the left push handle connecting tube (171), the middle part of the left handrail supporting tube (141) is fixed with the left frame upper horizontal tube (17) through a left supporting tube (1411), the left push handle (15) corresponds to the upper part of the left push handle connecting pipe (171); the right foot board (21) is vertically adjusted and arranged on the right foot board fixed folding arm (261), the right front wheel (22) is arranged at the front end of the right frame lower transverse pipe (26), the right rear wheel (23) is arranged at the junction part of the right frame lower transverse pipe (26) and the lower end of the right frame rear transition pipe (28b), a right rear wheel driving motor (231) is arranged at one side of the right rear wheel (23) facing the left rear wheel (13), the right armrest is provided with a right armrest supporting pipe (241), the rear end of the right armrest supporting pipe (241) is fixed with the front side of the right push handle connecting pipe (271), the middle part of the right armrest supporting pipe (241) is fixed with the right frame upper transverse pipe (27) through a right supporting pipe (2411), and the right push handle (25) corresponds to the upper part of the right push handle connecting pipe (271); the left rear wheel driving motor (131) and the right rear wheel driving motor (231) are electrically connected with the electric controller (10); the left edge part of the seat support cloth (3) is fixed with the left frame upper horizontal tube (17), and the right edge part of the seat support cloth (3) is fixed with the right frame upper horizontal tube (27); the lower part of the left edge part of the chair back supporting cloth (4) is fixed with a left push handle connecting pipe (171), the lower part of the right edge part of the chair back supporting cloth (4) is fixed with a right push handle connecting pipe (271), the left push handle (15) corresponds to the upper part of the left push handle connecting pipe (171), and the right push handle (25) corresponds to the upper part of the right push handle connecting pipe (271); the frame transverse folding mechanism (5) is connected between the left frame lower transverse pipe (16) and the left frame upper transverse pipe (17) and the right frame lower transverse pipe (26) and the right frame upper transverse pipe (27); the battery (6) is in a rectangular shape; the left push handle folding mechanism (7) is arranged between the upper part of the left push handle connecting pipe (171) and the lower end of the left push handle (15), and the right push handle folding mechanism (8) is arranged between the upper part of the right push handle connecting pipe (271) and the lower end of the right push handle (25); the manual operation controller (20) is arranged at the front end of the right armrest supporting tube (241).

3. The electric wheelchair having a double folding function as claimed in claim 2, wherein a locking pin latch fitting sleeve (251) is provided at a lower end of the right push handle (25); the structure of the left push handle folding mechanism (7) arranged between the upper part of the left push handle connecting pipe (171) and the lower end of the left push handle (15) is the same as that of the right push handle folding mechanism (8) arranged between the upper part of the right push handle connecting pipe (271) and the lower end of the right push handle (25), the right push handle folding mechanism (8) comprises a locking sleeve (81), a hinge plate (82), a right push handle locking pin (83), a locking pin actuating spanner (84) and a hinge shaft (85), the lower end of the locking sleeve (81) is fixed with the upper end of the right push handle connecting pipe (271), the upper end of the locking sleeve (81) extends out of the upper end surface of the right push handle connecting pipe (271), the locking sleeve (81) is provided with a locking sleeve cavity (811), the locking sleeve cavity (811) is open towards one side of the hinge plate (82), a pin hole (8111) is arranged on the bottom wall of the locking sleeve cavity (811) and at a position corresponding to the right push handle locking pin (83), a hinge shaft (85) of the hinge plate is provided at a lower portion of a side of the locking sleeve (81) facing the hinge plate (82), a lower end of the hinge plate (82) is hinged to the hinge shaft (85), and an upper end of the hinge plate (82) is fixed to the right push handle (25), and one end of the right push plate locking pin (83) facing the locking pin actuating wrench (84) is connected to a lower end of the locking pin actuating wrench (84) after slidably passing through the hinge plate (82), and a middle portion of the right push handle locking pin (83) is slidably fitted into a bushing chamber (2511) of the locking pin latching bushing (251), and the right push handle locking pin (83) is latched into or withdrawn from the pin hole (8111) toward one end of the pin hole (8111), the locking pin actuating wrench (84) corresponds to a rear side of the hinge plate (82) and an upper end of the locking pin actuating wrench (84) protrudes out of an upper.

4. The electric wheelchair with double folding function as claimed in claim 3, wherein a right push bar locking pin restricting nut (831) for coupling the right push bar locking pin (83) with the locking pin actuating wrench (84) is provided at an end of the right push bar locking pin (83) facing the locking pin actuating wrench (84), and a latch head (832) with a diameter larger than that of the right push handle locking pin (83) is formed at one end of the right push handle locking pin (83) facing the pin hole (8111), the latch head (832) is latched into or withdrawn from the pin hole (8111), a spring (833) is arranged in the middle of the right push handle locking pin (83) and positioned in the sleeve cavity (2511), one end of the spring (833) is supported on a latch head step (8321) of the latch head (832), and the other end of the spring (833) is supported on the hinge plate (82).

5. The electric wheelchair with a double folding function as claimed in claim 3, wherein a pair of hinge shaft fixing lugs (812) are formed at a lower end of the locking sleeve (81) and at a side facing the hinge plates (82), the hinge shaft (85) is penetratingly provided at the pair of hinge shaft fixing lugs (812) and a hinge shaft defining nut (851) is screw-fitted at a distal end of the hinge shaft (85); a pair of hinge plate hinge lugs (821) extend from the lower end of the hinge plate (82), the hinge plate hinge lugs (821) are hinged with the middle of the hinge shaft (85) at a position corresponding to the space between the hinge shaft fixing lugs (812), and a shaft sleeve (852) is sleeved on the hinge shaft (85) and at a position corresponding to the space between the hinge plate hinge lugs (821).

6. The electric wheelchair with a double folding function as claimed in claim 3, wherein a right push handle connecting tube bushing (2711) is embedded at a position of an upper end nozzle of the right push handle connecting tube (271), and a right push handle bushing (252) is embedded at a position of a lower end nozzle of the right push handle (25).

7. The electric wheelchair with the double folding function as claimed in claim 2, wherein a left support tube (172) is welded to the right side of the left frame upper cross tube (17), a seat cloth left edge fixing pressing plate (1721) is arranged above the left support tube (172), a right support tube (272) is welded to the left side of the right frame upper cross tube (27), and a seat cloth right edge fixing pressing plate (2721) is arranged above the right support tube (272); the left edge part of the seat support cloth (3) is clamped between a left edge fixing pressing plate (1721) and a left support tube (172) of the seat support cloth, the left edge fixing pressing plate (1721) and the left support tube (172) are fixed by a left edge fixing pressing plate screw (17211) of the seat support cloth, the right edge part of the seat support cloth (3) is clamped between a right edge fixing pressing plate (2721) and a right support tube (272) of the seat support cloth, and the right edge fixing pressing plate screw (27211) of the seat support cloth fixes the right edge fixing pressing plate (2721) and the right support tube (272); the frame transverse folding mechanism (5) is connected with the left supporting pipe (172) and the right supporting pipe (272).

8. The electric wheelchair having a double folding function as claimed in claim 7, wherein the frame lateral folding mechanism (5) comprises a first folding bar i (51), a second folding bar ii (52), a third folding bar iii (53), a fourth folding bar iv (54), a first link i (55), a second link ii (56), and a third link iii (57), a left end of the first folding bar i (51) is hinged to a first folding bar left hinge base i (512) by a first hinge pin i (511), the first folding bar left hinge base i (512) is fixed to the right side of the left frame lower cross tube (16), a right end of the first folding bar i (51) is fixed to the right support tube (272), a middle portion of the first folding bar i (51) is hinged to a middle portion of the second folding bar ii (52) by a second hinge pin ii (513), the second folding bar (52) is located in front of the first folding bar ii (51) and the left folding bar ii (52) of the second folding bar ii (52) is located in front of the first folding bar ii (51) The end is fixed with the left support pipe (172), the right end of the second folding rod II (52) is hinged with the second folding rod right hinged seat II (522) through a third hinged pin shaft III (521), the second folding rod right hinged seat II (522) is fixed with the left side of the right frame lower transverse pipe (26), a third folding rod III (53) is positioned at the rear side of the first folding rod I (51) and is parallel to the first folding rod I (51), the left end of the third folding rod III (53) is hinged with the lower end of the left frame rear transition pipe (18b), the right end of the third folding rod III (53) is fixed with the right support pipe (272), the middle part of the third folding rod III (53) is hinged with the middle part of a fourth folding rod IV (54) through a fourth hinged pin shaft IV (531), the fourth folding rod IV (54) is positioned at the rear side of the third folding rod III (53) and is parallel to the second folding rod II (52), the left end of the fourth folding rod IV (54) is fixed with the left supporting pipe (172), the right end of the fourth folding rod IV is hinged with the left end of a third connecting rod III (57) through a fifth hinge pin shaft V (541), the right end of the third connecting rod III (57) is connected with the right frame rear transition pipe (28b), a first connecting rod I (55) is hinged between the left end of the fourth folding rod IV (54) and the upper end of the left frame rear transition pipe (18b), and a second connecting rod II (56) is hinged between the right end of the third folding rod III (53) and the upper end of the right frame rear transition pipe (28 b); the battery (6) is arranged between the left ends of the first folding rod I (51) and the third folding rod III (53).

9. The electric wheelchair having a double folding function as claimed in claim 2 or 8, wherein a left frame balance wheel bar (19) is connected to the right side of the left frame rear transition pipe (18b), and a pair of anti-backward-tilting left balance wheels (191) are provided at the rear end of the left frame balance wheel bar (19); a right frame balance wheel rod (29) is connected to the left side of the right frame rear transition pipe (28b), and a pair of anti-back-tipping right balance wheels (291) is arranged at the rear end of the right frame balance wheel rod (29).

10. The electric wheelchair with a double folding function as claimed in claim 8, wherein a pair of battery fixing strips (58) which are spaced apart from and parallel to each other are fixed between the left ends of the first folding bar i (51) and the third folding bar iii (53), and the battery (6) is fixed between the pair of battery fixing strips (58); a pair of folding bar connecting strips (59) which are parallel to each other and spaced from each other are fixed between the right ends of the second folding bar II (52) and the fourth folding bar IV (54).

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