CN119606661A - A foldable electric wheelchair - Google Patents

Abstract

The application relates to the technical field of wheelchairs, in particular to a folding electric wheelchair which comprises frame modules, wherein two groups of frame modules are arranged at intervals, a seat module is arranged between the two groups of frame modules, a wheel module is arranged at the bottom of the two groups of frame modules, a pedal module is arranged at the front side of the two groups of frame modules, the folding module comprises a first folding mechanism, a second folding mechanism, a connecting rod mechanism, a locking mechanism and an unlocking mechanism, the first folding mechanism and the second folding mechanism are arranged between the two groups of frame modules, the connecting rod mechanism is arranged between the first folding mechanism and the second folding mechanism, the locking mechanism is arranged outside the connecting rod mechanism in a sliding mode, a supporting mechanism is hinged between the locking mechanism and the first folding mechanism, and the unlocking mechanism is arranged inside the connecting rod mechanism in a sliding mode. The application can make two groups of frame modules close to each other for compression, and the seat modules are folded and condensed, so that the volume of the electric wheelchair is reduced, and the electric wheelchair is convenient to package, transport and carry in daily life.

Description

Folding electric wheelchair

Technical Field

The application relates to the technical field of wheelchairs, in particular to a folding electric wheelchair.

Background

The wheelchair is provided with wheels and can be used for assisting in replacing walking, and can be divided into a manual wheelchair and an electric wheelchair according to a walking mode of the wheelchair, and the wheelchair is mainly used for meeting the riding-instead requirements of disabled limbs and people with inconvenient actions, and facilitating the movement of families and caring patients.

The existing wheelchair generally comprises a frame module, a seat module arranged at the top of the frame module and used for a user to sit on, a wheel module arranged at the bottom of the frame module and used for driving the frame module to move, and a pedal module arranged at the front side of the frame module and used for the user to tread on, wherein the frame module is generally arranged into a foldable scissor-type structure, so that the frame module can be folded to reduce the volume, and the wheelchair is convenient to package, transport and carry in daily life.

The application provides another frame module and a wheelchair capable of achieving folding and size reduction, so that the wheelchair is convenient to package, transport and carry in daily life.

Disclosure of Invention

In order to reduce the volume of the electric wheelchair and facilitate packaging, transportation and daily carrying, the application provides a folding electric wheelchair.

The above object of the present application is achieved by the following technical solutions:

The folding electric wheelchair comprises frame modules, seat modules, wheel modules, pedal modules, a folding module and a locking mechanism, wherein the two groups of frame modules are arranged at intervals, the seat modules are arranged between the two groups of frame modules and used for enabling a user to sit on, the wheel modules are arranged at the bottoms of the two groups of frame modules and used for driving the frame modules to move, the pedal modules are arranged at the front sides of the two groups of frame modules and used for enabling the user to pedal, the folding module comprises a first folding mechanism, a second folding mechanism, a connecting rod mechanism, a locking mechanism and an unlocking mechanism, the first folding mechanism and the second folding mechanism are arranged between the two groups of frame modules, the connecting rod mechanism is arranged between the first folding mechanism and the second folding mechanism and enables the first folding mechanism and the second folding mechanism to be unfolded or condensed synchronously, the locking mechanism is arranged outside the connecting rod mechanism in a sliding mode, the locking mechanism and the first folding mechanism are hinged, and when the locking mechanism slides to a preset position of the connecting rod mechanism, the locking mechanism and the connecting rod mechanism are clamped and locked mutually, so that the locking mechanism is pushed to keep an unfolded state through the supporting mechanism, the unlocking mechanism is arranged inside the connecting rod mechanism and used for releasing the locking relationship between the connecting rod mechanism and the locking mechanism.

Optionally, the first folding mechanism and the second folding mechanism all include two sets of folding plates and connecting plate, two sets of folding plates keep away from one side each other and articulate respectively and set up in two sets of frame modules, the connecting plate both sides articulate respectively and set up in two sets of folding plates are close to one side each other, the connecting plate of connecting rod mechanism both ends fixed respectively set up in the connecting plate of first folding mechanism and the connecting plate of second folding mechanism.

Optionally, be provided with first articulated shaft between connecting plate both sides and the two sets of folding board respectively, be provided with the second articulated shaft between locking mechanical system both sides and the two sets of supporting mechanism respectively, the connecting plate of first folding mechanism is provided with the articulated portion towards link mechanism one side, two sets of be provided with the third articulated shaft between articulated portion and the two sets of supporting mechanism respectively, and when first folding mechanism and second folding mechanism synchronous condensation to furthest, first articulated shaft, second articulated shaft, third articulated shaft coplanarity are arranged.

Optionally, the frame module middle part is provided with the installation cavity, the inside battery circuit module that is provided with of installation cavity, the frame module corresponds the installation cavity position and is provided with the protective cover, the frame module top is provided with control module, all through preset wire electric connection between control module and the battery circuit module, between battery circuit module and the wheel module, and the wire sets up in the frame module inside.

Optionally, pedal module includes mounting bracket, running-board, latch and first elastic component, frame module front side is provided with the mounting groove, mounting bracket one end is provided with the installation department of pegging graft the adaptation each other with the mounting groove, the running-board sets up in the mounting bracket and keeps away from installation department one end and be used for the user to trample, the latch slides and sets up in the frame module inside, first elastic component is fixed to be set up between frame module and latch and be used for promoting the latch and slide to with the mounting bracket looks butt, the mounting bracket is provided with the locking groove with the mutual joint adaptation of latch, and when the installation department inserts the mounting groove completely, the latch inserts the locking groove.

Optionally, the locking mechanism comprises a sliding seat, a movable bolt and a second elastic piece, wherein the sliding seat is arranged outside the connecting rod mechanism in a sliding way, the movable bolt is arranged inside the sliding seat in a sliding way, the second elastic piece is arranged between the sliding seat and the movable bolt and is used for pushing the movable bolt to slide to be abutted with the outside of the connecting rod mechanism, the connecting rod mechanism is provided with a locking hole which is mutually clamped and matched with the movable bolt, and when the sliding seat slides to a preset position of the connecting rod mechanism, the movable bolt is inserted into the locking hole, the unlocking mechanism comprises an unlocking push rod, an unlocking head and a handle component, the unlocking push rod is arranged inside the connecting rod mechanism in a sliding way, the unlocking head is arranged at one end of the unlocking push rod, the handle component is arranged at one end of the unlocking push rod in a far-dissociation way, and the handle component is used for pushing the unlocking push rod to slide so that the inclined wedge surface pushes the movable bolt to exit from the locking hole.

Optionally, the handle subassembly includes unblock handle, counterpoint push rod, third elastic component and fourth elastic component, the unblock handle slides and sets up in link mechanism keeps away from first folding mechanism one end, the fixed setting of counterpoint push rod is kept away from unblock first one end in the unblock push rod, the unblock handle is provided with the rotary groove that rotates the adaptation with the counterpoint push rod, the rotary groove tank bottom is provided with the groove of dodging of sliding the adaptation with the counterpoint push rod, the third elastic component sets up between unblock handle and link mechanism and is used for promoting the unblock handle and slides along keeping away from counterpoint push rod direction to make the counterpoint push rod be located the rotary groove inside, the fourth elastic component sets up between unblock handle and link mechanism and is used for driving the unblock handle and rotates along link mechanism axle center, so that counterpoint push rod and dodge the groove and align each other.

Optionally, the fourth elastic component includes reset ring, reset slider and reset spring, reset ring inner circumference slip sets up in the unblock handle periphery, just reset ring inner circumference and unblock handle periphery are provided with the smooth tooth of intermeshing proper configuration to make the unblock handle possess along keeping away from the gliding degree of freedom of counterpoint push rod direction, reset slider is fixed to be set up in reset ring periphery, link mechanism inner circumference is provided with the reset spout that distributes along link mechanism axle center, reset slider slides and sets up in reset spout, reset spring sets up between reset spout and reset slider and is used for driving reset ring and rotates along link mechanism axle center.

Optionally, be provided with locking mechanism between fourth elastic component and the locking mechanism, locking mechanism includes fixed pipe, slide bar and locking ring, fixed pipe extends along link mechanism axle center direction, just fixed pipe is fixed to be set up in link mechanism inner periphery, the slide bar slides and sets up in fixed pipe inner periphery, the locking ring is fixed to be set up in slide bar one end, slide bar is kept away from locking ring one end and is provided with the slip ball, the ring that resets is provided with the propulsion spout that distributes along link mechanism axle center, the slip ball slides and sets up in propulsion spout, and rotates along link mechanism axle center at the ring that resets to make counterpoint push rod and dodge the groove and align each other, the slip ball passes through the slide bar and drives locking ring butt in movable bolt.

Optionally, the locking mechanism is configured with two groups, and the two groups of locking mechanisms are mutually staggered along the axis direction of the connecting rod mechanism.

In summary, the present application includes at least one of the following beneficial technical effects:

When the electric wheelchair is required to be packaged, transported or carried daily, the handle assembly pushes the unlocking head to slide through the unlocking push rod, and the movable bolt is pushed to exit the locking hole by utilizing the inclined wedge surface of the unlocking head, so that the clamping locking relation between the locking mechanism and the connecting rod mechanism is released, the first folding mechanism and the second folding mechanism can be folded and condensed, two groups of frame modules are mutually close to each other for compression, and the seat modules are folded and condensed, so that the volume of the electric wheelchair is reduced, and the electric wheelchair is convenient to package, transport and carry daily.

Drawings

Fig. 1 is a perspective view of the overall structure of the present application.

Fig. 2 is a schematic view of the position of the folding module in the present application.

Fig. 3 is a structural cross-sectional view of the frame module in the present application.

Fig. 4 is a structural cross-sectional view of the pedal module in the present application.

Fig. 5 is a cross-sectional view of the overall structure of the present application.

Fig. 6 is a perspective view showing the structure of the folding module in the unfolded state in the present application.

Fig. 7 is a perspective view of the structure of the folding module in the condensation process according to the present application.

Fig. 8 is a structural cross-sectional view of a folding module in accordance with the first embodiment of the present application.

Fig. 9 is a vertical sectional view of a structure of a folding module in a second embodiment of the present application.

Fig. 10 is a horizontal sectional view showing the structure of a folding module in the second embodiment of the present application.

Fig. 11 is a vertical sectional view of a fourth elastic member in a second embodiment of the present application.

Fig. 12 is a transverse cross-sectional view of a fourth elastic member in a second embodiment of the present application.

Reference numerals illustrate 1, a frame module; 2, seat module, 3, wheel module, 4, pedal module, 41, mounting bracket, 42, foot pedal, 43, lock latch, 44, first elastic member, 45, mounting slot, 46, mounting portion, 47, locking slot, 5, folding module, 51, first folding mechanism, 52, second folding mechanism, 53, link mechanism, 54, locking mechanism, 541, sliding seat, 542, movable latch, 543, second elastic member, 544, locking hole, 55, unlocking mechanism, 551, unlocking push rod, 552, unlocking head, 553, handle assembly, 5531, unlocking handle, 5532, alignment push rod, 5533, third elastic member, 5534, fourth elastic member, 5535, rotating slot, 5536, avoiding slot, 554, wedge surface, 56, supporting mechanism, 61, folding plate, 62, connecting plate, 71, first hinge shaft, 72, second hinge shaft, 73, third hinge shaft, 81, mounting cavity, 82, battery circuit module, 83, protective cover plate, 84, control module, 91, reset ring 92, reset spring, 94, reset spring, 95, reset spring, 101, slide groove, 101, slide groove, 112, slide groove, and slide groove.

Detailed Description

The application is described in further detail below with reference to fig. 1 to 6.

The application discloses a folding electric wheelchair.

Embodiment one:

The foldable electric wheelchair comprises frame modules 1, seat modules 2, wheel modules 3, pedal modules 4 and folding modules 5, wherein the frame modules 1 are configured with two groups, the two groups of frame modules 1 are symmetrically arranged at intervals, the two groups of frame modules 1 are respectively integrally designed by adopting carbon fiber materials, the frame modules 1 are enabled to have light and high-strength performance, the seat modules 2 are fixedly arranged between the two groups of frame modules 1, the seat modules 2 are designed by adopting foldable cloth, the seat modules 2 can be used for sitting of a user and can be folded and stored, the wheel modules 3 are fixedly arranged at the bottoms of the two groups of frame modules 1, the wheel modules 3 are in an electric wheel mode, a user can drive the frame modules 1 and the electric wheelchair to integrally move by controlling the wheel modules 3, the pedal modules 4 are fixedly arranged at the front sides of the two groups of frame modules 1, the pedal modules 4 are fixedly arranged on the front sides of the frame modules 1 by adopting a detachable structure, the pedal modules 4 can be arranged at the front sides of the frame modules 1 according to the actual requirements of users, the folding modules 5 are arranged between the two groups of frame modules 1, the folding modules 5 can be folded and the two groups of frame modules 1 can be conveniently unfolded, and the whole wheelchair can be conveniently folded and carried by the user, and the two groups of the electric wheelchair can not be folded and can be folded and folded to integrally carry the electric wheelchair.

The wheel module 3 specifically comprises two groups of electric wheels and two groups of common wheels, wherein the electric wheels and the common wheels are disclosed in the prior art and are not disclosed in the prior art, the two groups of electric wheels are respectively and fixedly arranged on the rear sides of the two groups of frame modules 1, the two groups of common wheels are respectively and fixedly arranged on the front sides of the two groups of frame modules 1, the wheel module 3 can drive the frame modules 1 and the electric wheelchair to integrally move, in addition, an installation cavity 81 is arranged in the middle of the frame module 1, a battery circuit module 82 is arranged in the installation cavity 81, a protective cover plate 83 is arranged at the position of the frame module 1 corresponding to the installation cavity 81, a control module 84 is arranged at the top of the frame module 1, the battery circuit module 82 and the control module are disclosed in the prior art and are not disclosed in the prior art, and the control module 84 and the battery circuit module 82 are electrically connected with the wheel module 3 through preset wires, and the wires are arranged in the frame module 1. The user inputs the instruction through the control module 84, the battery circuit module 82 receives the instruction and controls the wheel module 3 to perform corresponding actions, so that the wheel module 3 can drive the frame module 1 and the electric wheelchair to integrally perform actions such as front and back, back and steering, and the wires are distributed inside the frame module 1 with an integrated structure, the wires are protected, and the wires are prevented from being damaged in the folding process of the electric wheelchair as much as possible.

The pedal module 4 specifically comprises a mounting frame 41, a pedal 42, a locking bolt 43 and a first elastic piece 44, wherein an installation groove 45 with an opening obliquely upwards is formed in the front side of the frame module 1, the mounting frame 41 is of a bent rod structure made of carbon fiber materials, an installation part 46 which is mutually inserted and matched with the installation groove 45 is fixedly formed in the top end of the mounting frame 41, the pedal 42 is fixedly arranged at one end, far away from the installation part 46, of the mounting frame 41 and used for a user to pedal, the locking bolt 43 is arranged inside the frame module 1 in a sliding penetrating mode, the first elastic piece 44 is of a pressure spring structure, the first elastic piece 44 is fixedly arranged between the frame module 1 and the locking bolt 43, the first elastic piece 44 is used for pushing the locking bolt 43 to slide to be abutted against the mounting frame 41, the mounting frame 41 is provided with a locking groove 47 which is mutually clamped and matched with the locking bolt 43, and when the installation part 46 is completely inserted into the installation groove 45, so that the pedal module 4 can be detachably locked on the front side of the frame module 1 according to the actual requirement of the user.

The folding module 5 specifically comprises a first folding mechanism 51, a second folding mechanism 52, a connecting rod mechanism 53, a locking mechanism 54 and an unlocking mechanism 55, wherein the first folding mechanism 51 and the second folding mechanism 52 have the same integral structure, are arranged between two groups of frame modules 1 at intervals, and have unfolding or condensing functions, specifically, the first folding mechanism 51 and the second folding mechanism 52 comprise two groups of folding plates 61 and a connecting plate 62, the two groups of folding plates 61 are symmetrically arranged at intervals, one far away from each other of the two groups of folding plates 61 is respectively hinged to the two groups of frame modules 1, two sides of the connecting plate 62 are respectively hinged to one near to each other of the two groups of folding plates 61, and the folding functions of the first folding mechanism 51 and the second folding mechanism 52 can be realized by controlling the two groups of folding plates 61 to synchronously unfold or condense relative to the connecting plate 62.

The link mechanism 53 is a metal round tube structure, two ends of the link mechanism 53 are respectively and vertically fixed on a connecting plate 62 of the first folding mechanism 51 and a connecting plate 62 of the second folding mechanism 52, so that in the process that the link mechanism 53 drives the two connecting plates 62 to synchronously move, the two groups of folding plates 61 of the first folding mechanism 51 and the two groups of folding plates 61 of the second folding mechanism 52 are synchronously unfolded or condensed, and the first folding mechanism 51 and the second folding mechanism 52 are synchronously unfolded or condensed.

The locking mechanism 54 is slidably disposed outside the link mechanism 53, a supporting mechanism 56 is hinged between the locking mechanism 54 and the first folding mechanism 51, and when the locking mechanism 54 slides to a predetermined position of the link mechanism 53, the locking mechanism 54 and the link mechanism 53 are clamped and locked to each other, so that the locking mechanism 54 pushes the first folding mechanism 51 to maintain a unfolded state through the supporting mechanism 56, specifically, the locking mechanism 54 includes a sliding seat 541, a movable latch 542 and a second elastic member 543, the sliding seat 541 is slidably disposed outside the link mechanism 53, the supporting mechanism 56 is of a metal supporting rod structure and is configured with two groups, one ends of the two groups of supporting mechanisms 56 are respectively hinged on two sides of the sliding seat 541, the other ends of the two groups of supporting mechanisms 56 are respectively hinged to two groups of folding plates 61 of the first folding mechanism 51, a spring cavity is disposed inside the sliding seat 541, the movable latch 542 slides through the spring cavity disposed inside the sliding seat 541, the second elastic member adopts a pressure spring structure, the second elastic member is abutted against the spring cavity disposed inside the sliding seat 541, so as to push the movable latch 542 to slide against the outside the link mechanism 53, and is inserted into the predetermined sliding hole 541 when the sliding seat 542 is matched with the movable latch hole 542. When the sliding seat 541 slides to the predetermined position of the link mechanism 53, the sliding seat 541 is locked by the snap fit of the movable latch 542 and the locking hole 544, and at this time, the sliding seat 541 supports and deploys the two sets of folding plates 61 of the first folding mechanism 51 by the supporting mechanism 56, so that a stable triangle structure is formed among the first folding mechanism 51, the supporting mechanism 56, and the link mechanism 53, and the effect that the locking mechanism 54 pushes the first folding mechanism 51 to maintain the unfolded state by the supporting mechanism 56 is achieved.

The unlocking mechanism 55 is arranged in the connecting rod mechanism 53 in a sliding manner, the unlocking mechanism 55 is used for releasing the clamping locking relation between the locking mechanism 54 and the connecting rod mechanism 53 so as to enable the locking mechanism 54 to restore the sliding degree of freedom relative to the connecting rod mechanism 53, the unlocking mechanism 55 specifically comprises an unlocking push rod 551, an unlocking head 552 and a handle assembly 553, the unlocking push rod 551 is arranged in the connecting rod mechanism 53 in a sliding manner through a preset sliding support, the unlocking head 552 is located near the position of the locking hole 544, the unlocking head 552 is fixedly arranged at one end of the unlocking push rod 551, the unlocking head 552 is provided with a wedge surface 554, the wedge surface 554 can push the movable plug 542 to slide against the elastic force of the second elastic piece 543 so as to enable the wedge surface 554 to push the movable plug 542 to withdraw from the locking hole 544, the handle assembly 553 is arranged at one end of the unlocking push rod 551 far away from the unlocking head 552, and the handle assembly 553 is used for pushing the unlocking push rod 551 to slide relative to the connecting rod mechanism 53. When the handle assembly 553 pushes the unlocking head 552 to slide through the unlocking push rod 551, the inclined wedge surface 554 of the unlocking head 552 pushes the movable bolt 542 to withdraw from the locking hole 544, so that the clamping and locking relationship between the locking mechanism 54 and the link mechanism 53 is released, and the first folding mechanism 51 and the second folding mechanism 52 can be folded and condensed.

The implementation principle is as follows:

When the electric wheelchair is needed, the sliding seat 541 is manually pushed to slide along the direction approaching the first folding mechanism 51 by the link mechanism 53, when the sliding seat 541 slides to a preset position of the link mechanism 53, the movable plug pin 542 and the locking hole 544 are aligned, and the movable plug pin 542 is pushed to be inserted into the locking hole 544 by the second elastic piece 543, at this time, the sliding seat 541 forms a supporting and unfolding function on the two groups of folding plates 61 of the first folding mechanism 51 by the supporting mechanism 56, so that a stable triangle structure is formed among the first folding mechanism 51, the supporting mechanism 56 and the link mechanism 53, thereby realizing the effect that the locking mechanism 54 pushes the first folding mechanism 51 to keep an unfolding state by the supporting mechanism 56, and synchronously, the link mechanism 53 reversely pushes the second folding mechanism 52 to keep an unfolding state, so that the two groups of frame modules 1 and the seat module 2 keep an unfolding state for seating a user;

When the electric wheelchair is required to be packaged, transported or carried daily, the handle assembly 553 pushes the unlocking head 552 to slide through the unlocking push rod 551, and pushes the movable bolt 542 to withdraw from the locking hole 544 by utilizing the inclined wedge surface 554 of the unlocking head 552, so that the clamping locking relation between the locking mechanism 54 and the link mechanism 53 is released, the first folding mechanism 51 and the second folding mechanism 52 can be folded and condensed, the two groups of frame modules 1 are mutually close to each other for compression, and the seat module 2 is folded and condensed, so that the electric wheelchair is reduced in size, and the electric wheelchair is convenient to package, transport and carry daily.

In the present embodiment, the first hinge shaft 71 is disposed between the two sides of the connecting plate 62 and the two sets of folding plates 61, the second hinge shaft 72 is disposed between the two sides of the locking mechanism 54 and the two sets of supporting mechanisms 56, the connecting plate 62 of the first folding mechanism 51 is fixedly provided with a protruding hinge portion toward the side of the link mechanism 53, the third hinge shaft 73 is disposed between the two sets of hinge portions and the two sets of supporting mechanisms 56, and the distances between the first hinge shaft 71 and the link mechanism 53, the second hinge shaft 72 and the link mechanism 53, and the third hinge shaft 73 and the top of the hinge portion are equal, so that when the first folding mechanism 51 and the second folding mechanism 52 are synchronously condensed to the maximum, the first hinge shaft 71, the second hinge shaft 72, and the third hinge shaft 73 are arranged in a coplanar manner.

Embodiment two:

the difference between the first embodiment and the second embodiment is that the first embodiment directly pushes the handle assembly 553 to push the unlocking head 552 to slide, so that the unlocking process is simply completed, and the first embodiment can push the unlocking head 552 to slide through the unlocking push rod 551 after the handle assembly 553 needs to rotate a certain angle, so that the condition that the clamping locking relationship between the locking mechanism 54 and the link mechanism 53 is released due to the fact that the handle assembly 553 is touched by mistake is avoided as much as possible, and the first embodiment has advantages.

The handle assembly 553 specifically includes an unlocking handle 5531, an alignment push rod 5532, a third elastic piece 5533, and a fourth elastic piece 5534; the unlocking handle 5531 comprises a handle portion 111, a slide rod portion 112 and a linkage portion 113 which are sequentially connected, the slide rod portion 112 of the unlocking handle 5531 slides through the end portion of the connecting rod mechanism 53, so that the unlocking handle 5531 has the freedom degree of rotating and sliding along the axis of the connecting rod mechanism 53, the aligning push rod 5532 is close to a T-shaped structure, the tail portion of the aligning push rod 5532 is fixedly arranged at one end of the unlocking push rod 551 far away from the unlocking head 552, the linkage portion 113 of the unlocking handle 5531 is provided with a rotating groove 5535 which is in rotating fit with the head of the aligning push rod 5532, namely, the head of the aligning push rod 5532 can freely idle in the rotating groove 5535, the bottom of the rotating groove 5535 is provided with an avoiding groove 5536 which is in sliding fit with the head of the aligning push rod 5532, and when the unlocking handle 5531 rotates to the opposite to the head of the aligning push rod 5532, the unlocking handle 5531 can not push the aligning push rod 5532 relatively, and when the unlocking handle 5531 can not push the aligning push rod 5532 synchronously, and when the unlocking handle 5532 rotates to the opposite to the head of the aligning push rod 5532; the third elastic member 5533 adopts a pressure spring structure, the third elastic member 5533 is arranged between the unlocking handle 5531 and the link mechanism 53, the third elastic member 5533 is used for pushing the unlocking handle 5531 to slide along the direction far away from the alignment push rod 5532 so as to enable the head of the alignment push rod 5532 to slide to be positioned in the rotating groove 5535, the whole of the fourth elastic member 5534 is similar to a torsion spring structure, the fourth elastic member 5534 is arranged between the linkage part 113 of the unlocking handle 5531 and the link mechanism 53, the fourth elastic member 5534 is used for driving the unlocking handle 5531 to rotate along the axis of the link mechanism 53, so that the alignment push rod 5532 and the relief groove 5536 are aligned with each other.

The fourth elastic member 5534 specifically comprises a reset ring 91, a reset slide block 92 and a reset spring 93, wherein the inner periphery of the reset ring 91 is slidably arranged on the outer periphery of a linkage part 113 of the unlocking handle 5531, slide teeth 94 which are mutually meshed and matched are arranged on the inner periphery of the reset ring 91 and the outer periphery of the linkage part 113 of the unlocking handle 5531, so that the unlocking handle 5531 has the degree of freedom of sliding along the direction far away from the alignment push rod 5532, the linkage part 113 of the unlocking handle 5531 can also drive the reset ring 91 to rotate on the basis, the reset slide block 92 is fixedly arranged on the outer periphery of the reset ring 91, reset slide grooves 95 distributed along the axis of the link mechanism 53 are arranged on the inner periphery of the link mechanism 53, the reset slide block 92 is slidably arranged on the reset slide grooves 95, the reset spring 93 adopts a pressure spring structure, and the reset spring 93 is fixedly arranged between the reset slide grooves 95 and the reset slide blocks 92 and is used for driving the reset ring 91 to rotate along the axis of the link mechanism 53.

When the handle assembly 553, the unlocking push rod 551 and the unlocking head 552 are required to push the movable bolt 542 to withdraw from the locking hole 544, the unlocking handle 5531 is rotated by 90 degrees to enable the avoidance groove 5536 to rotate to be staggered with the head of the alignment push rod 553, and then the unlocking handle 5531 is pushed, since the unlocking handle 5531 and the alignment push rod 5532 form an abutting relationship, the unlocking handle 5531 pushes the alignment push rod 5532 to synchronously slide, the unlocking push rod 551 pushes the unlocking head 552 to slide, so that the movable bolt 542 is pushed by the wedge surface 554 of the unlocking head 552 to withdraw from the locking hole 544, and the locking relationship between the locking mechanism 54 and the link mechanism 53 is released, otherwise, if the unlocking handle 5531 is directly pushed, the avoidance groove 5536 of the unlocking handle 5531 is aligned with the head of the alignment push rod 5532, the unlocking handle 5531 can relatively slide with the alignment push rod 5532, and the unlocking handle 5531 cannot push the alignment push rod 5532. By rotating and pushing the unlocking handle 5531, the situation that the locking relationship between the locking mechanism 54 and the link mechanism 53 is released due to the fact that a child or a user touches the unlocking handle 5531 by mistake can be effectively avoided.

In this embodiment, the locking mechanism 10 is disposed between the fourth elastic member 5534 and the locking mechanism 54, and the locking mechanism 10 can assist to abut against the movable latch 542 in the unfolded state of the folding module 5, even if the elastic force of the second elastic member 543 fails, the movable latch 542 can still assist to maintain a stable clamping relationship in the locking hole 544.

The anti-loosening mechanism 10 specifically comprises a fixed pipe 101, a sliding rod 102 and an anti-loosening ring 103, wherein the fixed pipe 101 extends along the axis direction of the link mechanism 53, the fixed pipe 101 is fixedly arranged on the inner periphery of the link mechanism 53, the sliding rod 102 is arranged on the inner periphery of the fixed pipe 101 in a sliding penetrating manner, one end of the sliding rod 102 extends to one side, far away from the unlocking head 552, of the movable plug 542, the anti-loosening ring 103 adopts a rubber ring structure, the anti-loosening ring 103 is also positioned on one side, far away from the locking head 552, of the movable plug 542 and is fixedly arranged on the sliding rod 102, one end, far away from the anti-loosening ring 103, of the sliding rod 102 is provided with a sliding ball 104, the diameter of the sliding ball 104 is larger than that of the sliding rod 102, the reset ring 91 is provided with a pushing chute 105 distributed along the axis of the link mechanism 53, the bottom of the pushing chute 105 is an elevating wedge surface, the sliding ball 104 is arranged on the pushing chute 105, and the reset ring 91 rotates along the axis of the link mechanism 53 so that when the aligning push rod 5532 and the avoiding groove 5536 are mutually aligned with the anti-loosening ring 103 via the sliding rod 102.

When the folding mechanism has no other external force, the third elastic piece 5533 pushes the unlocking handle 5531 to slide and reset along the direction away from the alignment push rod 5532, the fourth elastic piece 5534 drives the unlocking handle 5531 to rotate and reset along the axis of the link mechanism 53, the sliding ball 104 slides along the lifting wedge surface at the bottom of the pushing chute 105 along with the rotation of the reset circular ring 91, the locking ring 103 is driven to move to the position of the locking hole 544 through the sliding rod 102, when the folding mechanism is unfolded and the movable bolt 542 is inserted into the locking hole 544 under the elastic action of the second elastic piece 543, the locking ring 103 is abutted with one side of the movable bolt 542 away from the unlocking head 552, so that the locking ring 103 can be in auxiliary abutting connection with the movable bolt 542 under the unfolded state of the folding module 5, and the second elastic piece 543 is matched to improve the clamping stability of the movable bolt 542 in the locking hole 544;

When the handle assembly 553, the unlocking push rod 551 and the unlocking head 552 are required to push the movable bolt 542 to exit the locking hole 544, the unlocking handle 553 is rotated to drive the reset ring 91 to rotate, the sliding ball 104 slides along the lifting wedge surface at the bottom of the pushing chute 105, the locking ring 103 is pushed by the sliding rod 102 to move to be separated from the movable bolt 542, and at the moment, the unlocking handle 5531 is pushed again to release the clamping and locking relationship between the locking mechanism 54 and the link mechanism 53.

In the present embodiment, the lock mechanism 10 is provided with two sets, the lock mechanism 54 is provided with two sets, and the two sets of lock mechanisms 10 and the two sets of lock mechanisms 54 are arranged offset from each other in the axial direction of the link mechanism 53, and the structural reliability is improved by increasing the number of the lock mechanisms 10 and the lock mechanisms 54.

The embodiments of the present application are all preferred embodiments of the present application, and are not limited in scope by the present application, so that the equivalent changes according to the structure, shape and principle of the present application should be covered.

Claims (10)

1. The folding electric wheelchair is characterized by comprising

The frame module (1), the frame module (1) is configured with two groups, and the two groups of frame modules (1) are arranged at intervals;

The seat module (2) is arranged between the two groups of frame modules (1) and is used for seating a user;

The wheel modules (3) are arranged at the bottoms of the two groups of frame modules (1) and are used for driving the frame modules (1) to move;

The pedal modules (4) are arranged on the front sides of the two groups of frame modules (1) and are used for being stepped on by a user;

The folding module (5), folding module (5) include first folding mechanism (51), second folding mechanism (52), link mechanism (53), locking mechanism (54) and release mechanism (55), first folding mechanism (51) and second folding mechanism (52) all set up between two sets of frame modules (1), link mechanism (53) set up between first folding mechanism (51) and second folding mechanism (52) and make first folding mechanism (51) and second folding mechanism (52) synchronous expansion or condensation, locking mechanism (54) slide set up in link mechanism (53) outside, hinge between locking mechanism (54) and first folding mechanism (51) is provided with supporting mechanism (56), and when locking mechanism (54) slide to link mechanism (53) preset position, locking mechanism (54) and link mechanism (53) joint lock each other, so that locking mechanism (54) are through supporting mechanism (56) promotion first folding mechanism (51) keep expanding the state, release mechanism (55) slide set up in link mechanism (53) inside and are used for releasing locking mechanism (54) and link mechanism (53) between the joint locking relation.

2. The foldable electric wheelchair of claim 1, wherein the first folding mechanism (51) and the second folding mechanism (52) comprise two groups of folding plates (61) and a connecting plate (62), one far away from each other side of the two groups of folding plates (61) is respectively hinged to the two groups of frame modules (1), two sides of the connecting plate (62) are respectively hinged to one near to each other side of the two groups of folding plates (61), and two ends of the connecting rod mechanism (53) are respectively fixed to the connecting plate (62) of the first folding mechanism (51) and the connecting plate (62) of the second folding mechanism (52).

3. The foldable electric wheelchair of claim 2, wherein a first hinge shaft (71) is respectively arranged between two sides of the connecting plate (62) and the two groups of foldable plates (61), a second hinge shaft (72) is respectively arranged between two sides of the locking mechanism (54) and the two groups of supporting mechanisms (56), a hinge part is arranged on one side, facing the connecting rod mechanism (53), of the connecting plate (62) of the first folding mechanism (51), a third hinge shaft (73) is respectively arranged between the two groups of hinge parts and the two groups of supporting mechanisms (56), and when the first folding mechanism (51) and the second folding mechanism (52) are synchronously condensed to the maximum, the first hinge shaft (71), the second hinge shaft (72) and the third hinge shaft (73) are arranged in a coplanar mode.

4. The foldable electric wheelchair of claim 1, wherein the middle part of the frame module (1) is provided with a mounting cavity (81), a battery circuit module (82) is arranged inside the mounting cavity (81), a protective cover plate (83) is arranged at the position of the frame module (1) corresponding to the mounting cavity (81), a control module (84) is arranged at the top of the frame module (1), the control module (84) and the battery circuit module (82) are electrically connected through preset wires, and the wires are arranged inside the frame module (1).

5. The folding electric wheelchair according to claim 1, wherein the pedal module (4) comprises a mounting frame (41), a pedal (42), a locking bolt (43) and a first elastic piece (44), the front side of the frame module (1) is provided with a mounting groove (45), one end of the mounting frame (41) is provided with a mounting part (46) which is mutually inserted and matched with the mounting groove (45), the pedal (42) is arranged at one end of the mounting frame (41) far away from the mounting part (46) and is used for being stepped on by a user, the locking bolt (43) is slidably arranged inside the frame module (1), the first elastic piece (44) is fixedly arranged between the frame module (1) and the locking bolt (43) and is used for pushing the locking bolt (43) to slide to be abutted against the mounting frame (41), the mounting frame (41) is provided with a locking groove (47) which is mutually clamped and matched with the locking bolt (43), and when the mounting part (46) is completely inserted into the mounting groove (45), the locking bolt (43) is inserted into the locking groove (47).

6. The foldable electric wheelchair of claim 1, wherein the locking mechanism (54) comprises a sliding seat (541), a movable latch (542) and a second elastic member (543), the sliding seat (541) is slidably disposed outside the link mechanism (53), the movable latch (542) is slidably disposed inside the sliding seat (541), the second elastic member (543) is disposed between the sliding seat (541) and the movable latch (542) and is used for pushing the movable latch (542) to slide to abut against the outside of the link mechanism (53), the link mechanism (53) is provided with a locking hole (544) which is mutually engaged with the movable latch (542), and when the sliding seat (541) slides to a predetermined position of the link mechanism (53), the movable latch (542) is inserted into the locking hole (544), the unlocking mechanism (55) comprises an unlocking push rod (551), an unlocking head (552) and a handle assembly (553), the unlocking push rod 551 is slidably disposed inside the link mechanism (53), the unlocking head (552) is disposed at one end of the unlocking push rod (551) which is disposed away from the unlocking wedge (552), and the handle component (553) is used for pushing the unlocking push rod (551) to slide so that the inclined wedge surface (554) pushes the movable bolt (542) to withdraw from the locking hole (544).

7. The foldable electric wheelchair of claim 6, wherein the handle assembly (553) comprises an unlocking handle (5531), an alignment push rod (5532), a third elastic piece (5533) and a fourth elastic piece (5534), the unlocking handle (5531) is slidably arranged at one end of the connecting rod mechanism (53) far away from the first folding mechanism (51), the alignment push rod (5532) is fixedly arranged at one end of the unlocking push rod (551) far away from the unlocking head (552), the unlocking handle (5531) is provided with a rotating groove (5535) which is rotationally matched with the alignment push rod (5532), the groove bottom of the rotating groove (5535) is provided with an avoidance groove (5536) which is slidably matched with the alignment push rod (5532), the third elastic piece (5533) is arranged between the unlocking handle (5531) and the connecting rod mechanism (53) and is used for pushing the unlocking handle (5531) to slide along the direction far away from the alignment push rod (5532) so that the alignment push rod (5532) is positioned inside the rotating groove (5535), and the fourth elastic piece (5531) is arranged between the unlocking handle (5532) and the connecting rod mechanism (5532) and the unlocking mechanism (5532) to be rotationally matched with the unlocking mechanism (5532).

8. The foldable electric wheelchair of claim 7, wherein the fourth elastic member (5534) comprises a reset ring (91), a reset slide block (92) and a reset spring (93), the inner periphery of the reset ring (91) is slidably arranged on the outer periphery of the unlocking handle (5531), and sliding teeth (94) which are matched with each other in a meshed manner are arranged on the inner periphery of the reset ring (91) and the outer periphery of the unlocking handle (5531), so that the unlocking handle (5531) has the degree of freedom of sliding along the direction far away from the alignment push rod (5532), the reset slide block (92) is fixedly arranged on the outer periphery of the reset ring (91), the inner periphery of the link mechanism (53) is provided with reset slide grooves (95) distributed along the axis of the link mechanism (53), the reset slide block (92) is slidably arranged on the reset slide grooves (95), and the reset spring (93) is arranged between the reset slide grooves (95) and the reset slide block (92) and is used for driving the reset ring (91) to rotate along the axis of the link mechanism (53).

9. The foldable electric wheelchair of claim 8, wherein the locking mechanism (10) is arranged between the fourth elastic piece (5534) and the locking mechanism (54), the locking mechanism (10) comprises a fixed pipe (101), a sliding rod (102) and a locking ring (103), the fixed pipe (101) extends along the axis direction of the connecting rod mechanism (53), the fixed pipe (101) is fixedly arranged on the inner periphery of the connecting rod mechanism (53), the sliding rod (102) is slidably arranged on the inner periphery of the fixed pipe (101), the locking ring (103) is fixedly arranged at one end of the sliding rod (102), a sliding ball (104) is arranged at one end, far away from the locking ring (103), of the sliding rod (102), the sliding ball (104) is slidably arranged on the sliding groove (105) and rotates along the axis of the connecting rod mechanism (53) when the sliding rod (5532) and the sliding rod (5536) are aligned with each other, and the sliding ball (104) is driven by the sliding ball (542) to abut against the sliding pin (102).

10. The foldable electric wheelchair of claim 9, wherein the locking mechanism (10) is provided with two groups, the locking mechanism (54) is provided with two groups, and the two groups of locking mechanisms (10) and the two groups of locking mechanisms (54) are arranged in a staggered manner along the axis direction of the connecting rod mechanism (53).