CN218305358U

CN218305358U - Walk-substituting vehicle

Info

Publication number: CN218305358U
Application number: CN202221588917.4U
Authority: CN
Inventors: 杜剑锋; 王志鹏; 杨磊; 李智星
Original assignee: Hummingbird Daibu Beijing Technology Co ltd
Current assignee: Anhui Jinbaihe Medical Equipment Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2023-01-17
Anticipated expiration: 2032-06-23

Abstract

The utility model discloses a scooter to solve among the prior art folding and the complicated problem of expansion manual operation process of electronic scooter. The utility model discloses a car of riding instead of walk includes: a chassis assembly; a seat assembly; a support bar assembly to which the chassis assembly and the seat assembly are respectively hingedly connected, the support bar assembly having a folded state and an unfolded state; a drive assembly for driving the seat assembly upwardly away from the chassis assembly; when the supporting rod assembly is switched from the unfolding state to the folding state, the seat assembly is stored on the chassis assembly; the drive assembly may drive the seat assembly upward away from the chassis assembly. The utility model discloses the car of riding instead of walk is folding with expand the in-process, only simple operating procedure realizes the folding and the expansion operation of seat promptly, has solved among the prior art folding and the complicated inconvenient problem of expansion operation process of electronic wheelchair.

Description

Walk-substituting vehicle

Technical Field

The utility model relates to a medical equipment, concretely relates to car of riding instead of walk.

Background

The electric scooter in the prior art adopts a multi-link mechanism to realize folding, needs manual operation and realizes folding and unfolding of the electric scooter through a plurality of steps, has a complex operation process, and is not suitable for being operated by old people and people with inconvenient actions.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the folding and unfolding manual operation process of the electric scooter in the prior art is complicated at least. The purpose is realized by the following technical scheme:

the utility model discloses a first aspect provides a car of riding instead of walk, include:

a chassis assembly;

a seat assembly;

a support bar assembly to which the chassis assembly and the seat assembly are respectively hingedly connected, the support bar assembly having a folded state and an unfolded state;

a drive assembly for driving the seat assembly upwardly away from the chassis assembly;

the seat assembly is stowable on the chassis assembly when the support bar assembly is switched from the deployed state to the folded state;

when the drive assembly drives the seat assembly to move upwards away from the chassis assembly, the support rod assembly is switched from the folded state to the unfolded state.

According to the utility model discloses a car of riding instead of walk realizes the expansion of seat subassembly through drive assembly to through pressing seat subassembly downstream, the folding of wheelchair is realized with the joint of chassis subassembly to the seat subassembly, when needs expand, drive assembly drive seat subassembly upward movement makes the automatic expansion of seat subassembly, when the seat subassembly is folding, through pressing the folding of seat subassembly having realized the seat subassembly promptly, operating is simplified, realize the folding and the expansion operation of seat promptly, the volume after folding simultaneously is littleer, and is convenient for carry.

In addition, according to the utility model discloses a car of riding instead of walk still can have following additional technical characterstic:

in some embodiments of the present invention, the seat assembly includes a back support and a seat pan support, the back support is hinged at a rear position of the seat pan support, and the back support has a back folded state and a back unfolded state on the seat assembly.

In some embodiments of the present invention, the seat assembly further comprises two armrest mechanisms connected to two sides of the seat plate bracket in an expandable manner, and the support rod assembly is switched from the expanded state to the folded state, and each armrest mechanism is foldable between two traveling wheels at the front and the rear of the chassis assembly.

In some embodiments of the present invention, each of the armrest mechanisms comprises:

the handrail comprises an installation part and a supporting part, the supporting part is arranged at the top end of the installation part, and one side of the installation part is provided with an installation groove;

the bottom of the mounting part is rotatably sleeved at one end of the first connecting rod, one end of the second connecting rod is rotatably connected with the mounting part, and the other end of the first connecting rod and the other end of the second connecting rod are hinged at different positions of the seat plate bracket;

and part of the adjusting assembly is arranged in the mounting groove and is matched with the first connecting rod, at least one locking state is formed between the first connecting rod and the handrail, and the adjusting assembly is used for controlling the first connecting rod and the handrail to be switched into different states.

In some embodiments of the present invention, the support rod assembly comprises:

one end of the first connecting rod is hinged with the first position of the seat plate bracket, and the other end of the first connecting rod is hinged with the first position of the chassis component;

one end of the second connecting rod is hinged with the second position of the seat plate bracket, and the other end of the second connecting rod is hinged with the second position of the chassis component; the first connecting rod, the second connecting rod, the seat assembly and the chassis assembly form a four-bar linkage motion mechanism;

when the driving assembly drives the first connecting rod and the second connecting rod to swing upwards, the four-connecting-rod movement mechanism is switched from a folded state to an unfolded state;

when the first connecting rod and the second connecting rod swing downwards, the four-bar linkage motion mechanism is switched from the unfolding state to the folding state.

In some embodiments of the present invention, the scooter further comprises a locking mechanism, the first link is connected to the chassis assembly through the locking mechanism, or the second link is connected to the chassis assembly through the locking mechanism,

when the seat assembly moves upwards away from the chassis assembly and is unfolded, the locking mechanism supports the four-bar linkage motion mechanism so that the four-bar linkage motion mechanism is kept in an unfolded state;

when the locking mechanism is unlocked, the seat assembly can move downwards close to the chassis assembly to be folded, and the four-bar linkage motion mechanism can be folded.

In some embodiments of the present invention, the locking mechanism comprises:

one end of the first supporting rod is hinged with the first connecting rod or the second connecting rod;

one end of the second supporting rod is hinged with the other end of the first supporting rod, and the other end of the second supporting rod is hinged with the third position of the chassis component;

when the seat assembly moves upwards and is unfolded away from the chassis assembly, the first supporting rod and the second supporting rod are unfolded to support the four-bar linkage motion mechanism, so that the four-bar linkage motion mechanism is kept in an unfolded state.

In some embodiments of the present invention, when one end of the first support rod is hinged to the first connection rod, the locking mechanism further includes a fixture block, the second connection rod is provided with a fixture block located between two hinge shafts of the second connection rod, after the seat assembly moves upward and unfolds away from the chassis assembly, the first support rod and the second support rod unfold, and the first support rod or the hinge shaft between the first support rod and the second support rod can be clamped in the fixture block; when the seat component moves downwards and is folded close to the chassis component, the first support rod or the hinge shaft between the first support rod and the second support rod can slide out of the clamping block.

In some embodiments of the present invention, the scooter further comprises a first connecting assembly, the hinge shaft between the backrest support and the seat plate support is a first hinge shaft, the first hinge shaft is connected to the second support rod through a first connecting assembly, and the backrest support has an unfolded position and a folded position on the seat plate support; the backrest bracket can drive the first supporting rod to swing through the first connecting component, so that the first supporting rod and the second supporting rod are folded.

In some embodiments of the present invention, the first connection assembly comprises:

a first sheave connected to a hinge shaft between the first connecting rod and the first support rod or a hinge shaft between the second connecting rod and the first support rod;

one end of the first steel wire rope is connected with the first hinge shaft, and the other end of the first steel wire rope is wound on the first rope wheel;

when the backrest support is switched between the unfolding position and the folding position, the first rope wheel can be driven by the first steel wire rope to rotate, so that the first support rod and the second support rod can be folded or unfolded.

In some embodiments of the present invention, the scooter further comprises a second connection assembly, the seat assembly further comprises:

the clamping hook is connected with the bottom of the seat plate bracket through an elastic part, and the bottom of the seat plate bracket is provided with a clamping position and a clamping release position;

the buckle is rotatably arranged on the backrest bracket, a hinged shaft between the buckle and the backrest bracket is a second hinged shaft, and the buckle is provided with a first rotating position and a second rotating position;

the two ends of the second connecting component are connected with the second hinge shaft and the clamping hook;

when the seat assembly and the chassis assembly are folded together, the handle is pulled by the second rotating position to the first rotating position when being switched, the handle pulls the clamping hook by the clamping position moves to the clamping release position, so that the clamping hook is separated from the chassis assembly.

In some embodiments of the present invention, a first torsion spring is provided on the hinge axis between the catcher and the backrest bracket, the first torsion spring being used to maintain the catcher in the first rotational position, and/or,

the clamping hook is rotatably arranged at the bottom of the seat plate support, the elastic part is a second torsion spring, and the second torsion spring is used for keeping the clamping hook at a clamping position.

And/or, the second connection assembly comprises:

the second rope pulley is sleeved on the second articulated shaft and is connected with the buckle;

one end of the second steel wire rope is connected with the second rope wheel, and the other end of the second steel wire rope is connected with the clamping hook;

the attacker by the second rotational position to when first rotational position switches, the attacker passes through the second rope pulling the pothook by the joint position removes extremely the joint removes the position.

In some embodiments of the present invention, the seat assembly further comprises an angle adjustment mechanism; the handle is connected with the first hinge shaft through an angle adjusting mechanism, and the angle adjusting mechanism has two states of locking and unlocking;

when the handle is switched from the first rotating position to the second rotating position, the angle adjusting mechanism is in an unlocking state diagram, and the backrest support can rotate at any position between the folding position and the unfolding position;

the angle adjustment mechanism may lock the back bracket in the folded position and the unfolded position.

In some embodiments of the present invention, the angle adjusting mechanism includes:

the grooved wheel is sleeved on the first hinge shaft and connected with the first hinge shaft;

the clamping jaw is hinged to the backrest support, is matched and connected with the clamping groove in the grooved wheel and is provided with a first locking position and a second locking position on the grooved wheel;

one end of the connecting rod is hinged with the first position of the buckle, the axis of the connecting rod and the hinge of the buckle is relatively eccentrically arranged with the axis of the second hinge shaft, the other end of the connecting rod is hinged with the clamping jaw, and the axis of the connecting rod and the clamping jaw is relatively eccentrically arranged with the axis of the clamping jaw and the hinge of the backrest support;

when the handle is switched from a first rotating position to a second rotating position, the clamping jaws can be separated from the clamping grooves;

when the claw is positioned at the first locking position, the backrest support is positioned at the unfolding position;

when the pawl is in the second locked position, the back bracket is in a folded position.

In some embodiments of the present invention, the drive assembly comprises:

and one end of the actuating component is connected to the seat assembly, and the other end of the actuating component is connected to the chassis assembly or the supporting rod assembly.

In some embodiments of the present invention, the actuating component comprises a pneumatic spring and/or a booster, one end of the pneumatic spring is connected to the seat assembly, and the other end of the pneumatic spring is connected to the chassis assembly or the support rod assembly;

the power assisting part comprises a third torsion spring, the third torsion spring is arranged on at least one hinged shaft of the supporting rod assembly and/or a hinged shaft between the backrest bracket and the seat plate bracket, and the power assisting part is used for providing power assisting when the supporting rod assembly is unfolded.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated with like reference numerals throughout the drawings. In the drawings:

figure 1 schematically illustrates an isometric view of an embodiment of the mobility scooter of the present invention;

fig. 2 schematically shows an overall structural view of an armrest mechanism according to an embodiment of the present invention;

FIG. 3 is a cross-sectional structural view of the armrest mechanism of FIG. 2 in an expanded state;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a cross-sectional structural view of the armrest mechanism of FIG. 2 during a transition from the extended position to the collapsed position (i.e., an unlocked position of the adjustment assembly);

FIG. 6 is an enlarged view of portion B of FIG. 5;

FIG. 7 is a cross-sectional structural view of the armrest mechanism of FIG. 2 in a folded state;

fig. 8 is an enlarged schematic view of the portion C in fig. 7.

Figure 9 schematically illustrates a side view of an embodiment of the mobility scooter of the present invention;

figure 10 schematically illustrates a rear view of an embodiment of the mobility scooter of the present invention;

FIG. 11 isbase:Sub>A cross-sectional view A-A of FIG. 10;

figure 12 schematically illustrates a partial view of an embodiment of the mobility scooter of the present invention;

figure 13 schematically illustrates an enlarged partial view of an embodiment of the mobility scooter of the present invention;

fig. 14 schematically shows the overall structure of the folded scooter of the present invention.

The reference numbers are as follows:

10. a chassis component 11, a chassis 12, a traveling wheel 13 and a hanging buckle;

20. seat component, 21, seat plate bracket, 22, backrest bracket, 23, hook, 24, buckle, 25, first hinge shaft, 26, second hinge shaft, 27, first torsion spring, 28, backrest, 29, cushion;

30. a support rod component 31, a first connecting rod 32, a second connecting rod,

40. a drive assembly, 41, a third torsion spring;

50. the locking mechanism 51, the first support rod 52, the second support rod 53 and the fixture block;

60. the first connecting component 61, the first rope wheel 62, the first steel wire rope 63 and the steel wire rope winding wheel;

70. a second connecting assembly 71, a second rope wheel 72 and a second steel wire rope;

80. angle adjusting mechanism 81, grooved pulley 82, claw 83 and connecting rod.

90. The armrest mechanism comprises an armrest mechanism 91, a mounting part 91a, a mounting groove 91b, a second convex block 91c, a first convex block 92, a supporting part 93, a cover plate 94, a first connecting rod 941, a body part 942, a locking piece 9421, a first groove 9421a, a square groove part 9421b, an inclined groove part 95, a second connecting rod 951, a first connecting part 952, a second connecting part 96, an adjusting assembly 961, a wrench 962, a locking block 963, a tension spring 964 and a wave screw.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both an up and down orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

According to the utility model discloses an embodiment provides a car of riding instead of walk, and this car of riding instead of walk can be wheelchair, the walking equipment of riding instead of walk etc.. The following description will be given by taking a scooter as an example of a wheelchair.

As shown in fig. 1, 9-12, and 14, the walker may include a chassis assembly 10, a seat assembly 20, a support bar assembly 30, and a drive assembly 40. The chassis assembly 10 and the seat assembly 20 are hingedly connected to the support bar assembly 30, respectively. The support bar assembly 30 has a folded state and an unfolded state such that the seat assembly 20 can be stowed on the floor assembly 10 and can be moved up and unfolded from the floor assembly 10. The drive assembly 40 is used to drive the seat assembly 20 upward away from the floor assembly 10. When the support rod assembly 30 is switched from the unfolded state to the folded state, the seat assembly 20 can be stored on the chassis assembly 10; the support bar assembly 30 is switched from the folded condition to the unfolded condition as the drive assembly 40 drives the seat assembly 20 upward away from the chassis assembly 10.

In some embodiments, the seat assembly 20 may be snapped into place with the floor assembly 10 to maintain the folded position, or may be folded without snapping, such as by a motor driven hinge between the support bar assembly 30 and the seat assembly 20 or a hinge between the support bar assembly 30 and the floor assembly 10 to automatically deploy or fold the seat assembly 20 on the floor assembly 10.

As shown in fig. 1, the chassis assembly 10 includes a chassis 11 and road wheels 12, two road wheels 12 are respectively disposed on left and right sides of the chassis 11, and two front wheels or two rear wheels can be used as driving wheels and are driven by a motor. The containing space is formed between the two front wheels and the two rear wheels on the chassis 11 and above the chassis 11, and the backrest assembly can be contained in the containing space after being folded and the seat plate assembly, so that the folding volume of the electric scooter can be reduced, and the electric scooter is convenient to carry.

When the wheelchair is folded, a person presses the seat assembly 20 downward to fold the seat assembly 20 onto the chassis assembly 10, thereby completing the folding operation of the wheelchair. When the wheelchair is unfolded, the driving assembly 40 drives the seat assembly 20 to move upwards, so that the seat assembly 20 is unfolded.

In one embodiment, as shown in fig. 9, 11 and 13, the seat assembly 20 can be provided with a catch 23 and the chassis assembly 10 can be provided with a catch, and the seat assembly 20 can be retained on the bottom of the chassis assembly 10 by the catch 23 engaging with the catch after folding of the wheelchair. The seat assembly 20 can be provided with a button, the button is connected with the hook 23, the hook 23 is separated from the clamping groove by pressing the button, and the driving mechanism automatically drives the seat assembly 20 to move upwards, so that the scooter can be automatically unfolded.

As shown in fig. 1, the seat assembly 20 includes a back bracket 22 and a seat pan bracket 21, the back bracket 22 is hinged at a rear side position of the seat pan bracket 21, and the back bracket 21 has a back folded state and a back unfolded state on the seat assembly 20. By folding the seat support 21, the seat assembly 20 can be stored in the chassis assembly 10, and a user can occupy a smaller space and can carry the seat assembly conveniently.

In one embodiment, the seat assembly 20 further includes two armrest mechanisms 90 that are foldably connected to two sides of the seat pan assembly 20, and each armrest mechanism 90 is foldable between two road wheels 12 at the front and the rear of the chassis assembly 10 when the support rod assembly 30 is switched from the unfolded state to the folded state.

The both sides of the seat pan assembly 20 refer to both sides of the seat assembly 20 in the width direction, i.e., both left and right sides of the scooter.

The armrest mechanism 90 can be folded between the two front and rear road wheels 12 of the chassis assembly 10, so that the folded seat assembly 20 has a more compact structure, occupies a smaller space, and is convenient to carry.

As shown in fig. 2 and 3, each armrest mechanism 90 includes an armrest, a link assembly and an adjusting assembly 96, the armrest includes a mounting portion 91 and a supporting portion 92, the supporting portion 92 is disposed at a top end of the mounting portion 91, a mounting groove 91a is disposed at one side of the mounting portion 91, the link assembly includes a first connecting rod 94 and a second connecting rod 95, a bottom of the mounting portion 91 is rotatably sleeved at one end of the first connecting rod 94, one end of the second connecting rod 95 is rotatably connected with the mounting portion 91, and the other end of the first connecting rod 94 and the other end of the second connecting rod 95 are hinged at different positions of the seat plate bracket 21; a part of the adjusting assembly 96 is installed in the installation groove 91a and is engaged with the first connecting rod 94, at least one locking state is provided between the first connecting rod 94 and the armrest, and the adjusting assembly 96 is used for controlling the first connecting rod 94 and the armrest to switch between different states.

Through using the armrest mechanism among this technical scheme, adopt the handrail, link assembly and adjusting part 96's integrated configuration, the supporting part 92 of handrail is used for supporting the arm position of taking personnel, the installation department 91 of handrail is used for cooperating with link assembly and is connected, wherein, the both ends of link assembly's first connecting rod and second connecting rod cooperate with seat subassembly and installation department 91 respectively, can reach the motion mechanism of similar four-bar linkage, be convenient for armrest mechanism carries out the motion of relative position, the adjusting part 96 that lies in mounting groove 91a simultaneously cooperatees with head rod 94, and can control head rod 94 and handrail to fix at least one locking state, make the handrail, relative position between head rod 94 and the ride instead of walk car is adjustable, finally realize the different states that armrest mechanism required, wherein, the utility model provides an armrest mechanism is including expansion state, fold condition and dodge the state, all can be realized through the cooperation between adjusting part 96, link assembly and the handrail, overall structure is simple, and the regulative mode is convenient, certain user experience has been promoted.

Specifically, the present invention provides at least one locking state between the first connecting rod 94 and the armrest, wherein the at least one locking state includes a first locking state (corresponding to the unfolded state of the armrest mechanism), a second locking state (corresponding to the folded state of the armrest mechanism), and a semi-locking state (corresponding to the avoiding state of the armrest mechanism). In addition, an unlocked state is provided between the first connecting rod 94 and the armrest for switching between different locked states between the first connecting rod 94 and the armrest.

In some embodiments of the present invention, as shown in fig. 5 and 6, the adjusting assembly 96 includes a wrench 961 and a locking block 962, and one end of the wrench 961 is located outside the mounting portion 91 and on the bottom side of the supporting portion 92, so that the wrench 961 can be conveniently adjusted by a hand of a passenger, and convenience in adjusting the position is improved. The other end of the wrench 961 is located in the mounting groove 91a and is connected with the locking block 962, a first protruding block 91c is arranged in the mounting groove 91a, one end of the locking block 962 is rotatably sleeved outside the first protruding block 91c, and the other end of the locking block 962 is connected with one end of the first connecting rod 94 in a matching manner. The other end of the wrench 961 in this embodiment is connected to the locking block 962, and the locking block 962 can rotate along the first protruding block 91c located in the installation groove 91a, i.e. the height of the wrench 961 can be adjusted by the passenger, because the wrench 961 is connected to the locking block 962, the fitting relationship between the locking block 962 and the first connecting rod 94 penetrating the installation groove 91a can be adjusted, and the adjustment of the relative position between the armrest and the first connecting rod 94 can be realized, and finally different states of the armrest mechanism can be achieved.

Specifically, in this embodiment, wrench 961 includes an adjusting portion and a driving portion, the adjusting portion is located at the top end of the driving portion, the adjusting portion is located outside the mounting portion 91 and at the bottom side of the supporting portion 92, and the driving portion is located in the mounting groove 91a and connected to the locking block 962. The outside cladding of adjustment portion has rubber or other materials that have frictional force, can increase the frictional force between the personnel of taking and the adjustment portion, promotes the comfort level and the convenient degree of adjusting.

In some embodiments of the present invention, as shown in fig. 5 and 6, the adjusting assembly 96 includes an elastic member, a second protrusion block 91b is disposed in the mounting groove 91a, one end of the elastic member is connected to the second protrusion block 91b, and the other end of the elastic member is connected to the wrench 961. In this embodiment, one end of the elastic member is sleeved on the second protrusion block 91b in the mounting groove 91a, and the other end of the elastic member is connected to the other end of the wrench 961, so that the wrench 961 can be ensured to have an initial position, and after the wrench 961 is adjusted by a passenger from the initial position, the elastic force of the elastic member can ensure that the wrench 961 returns to the initial position or the wrench 961 has an elastic force returning to the initial position, so that the wrench 961 of the adjusting assembly 96 has a returning capability. The elastic member in this embodiment is a tension spring 963 or other elastic member.

In some embodiments of the present invention, as shown in fig. 5 and 6, the first connecting rod 94 includes a body portion 941 and a protrusion, the protrusion is disposed on one side of the body portion 941, the other end of the body portion 941 is rotatably connected to the seat component through an elastic member, and the mounting portion 91 is rotatably sleeved on the outer side of the protrusion. In this embodiment, the other end of the body portion 941 and the seat component can be rotationally connected through a main return torsion spring, that is, a certain elastic force is always provided between the body portion 941 and the seat component, when the first connecting rod 94 and the seat component can rotate, the elastic force of the main return torsion spring can urge the first connecting rod 94 to return in opposite directions, and the locking block 962 is engaged to fix each state of the armrest mechanism. The mounting portion 91 is sleeved outside the protrusion, and the mounting portion 91 in this embodiment has a mounting hole therein, that is, the mounting hole is connected to the protrusion in a fitting manner, and the other end of the locking block 962 can be matched to the locking piece 942 on the protrusion, so as to achieve relative rotation and relative locking between the armrest and the first connecting rod 94.

Specifically, the utility model discloses an among other embodiments, the elasticity drive direction of main return torsional spring can be with the elasticity drive direction of main return torsional spring in the above-mentioned embodiment opposite, can make the handrail carry out opposite rotation along the position of main return torsional spring, and the cooperation locking piece can be fixed each state of handrail mechanism equally, and then realizes the switching of the different states of handrail mechanism.

In some embodiments of the present invention, as shown in fig. 5 and 6, each of the armrest mechanisms 90 further includes a locking piece 942, the locking piece 942 is fixedly connected to the first connecting rod 94 and cooperates with the locking block 962, and in particular, the locking piece 942 is fixedly connected to the protruding portion of the first connecting rod 94 and cooperates with the locking block 962. The locking piece 942 abuts the mounting portion 91 on a side facing the first connecting rod 94. In this embodiment, the mounting portion 91 can be sleeved on the boss portion, and the locking piece 942 fixedly connected to the boss portion can limit the axial displacement of the mounting portion 91, so as to ensure that the mounting portion 91 can stably rotate along the boss portion without axial play. In this embodiment, the locking piece 942 may be connected to the boss by screwing.

In some embodiments of the present invention, as shown in fig. 5 and 6, the circumferential space of the locking piece 942 is provided with a first groove 9421 and a second groove, and the first groove 9421 and the second groove can be respectively matched with the other end of the locking block 962, i.e. the other end of the locking block 962 can be respectively locked with the first groove 9421 and the second groove. As shown in fig. 3 and 4, when the first groove 9421 is engaged with the other end of the locking piece 962, that is, the other end of the locking piece 962 is engaged in the first groove 9421 (which is the initial state of the wrench 961), the armrest mechanism is in the expanded state. Because one end of the locking block 962 is rotatably connected to the first protruding block 91c in the mounting groove 91a, when the other end of the locking block 962 is located in the first groove 9421, the armrest, the adjusting assembly 96 and the first connecting rod 94 can be fixed to achieve the first locking state of the first connecting rod 94 and the armrest, and also to achieve the unfolding state of the armrest mechanism, the armrest is located at the highest position of self adjustment, and the length direction of the mounting portion 91 of the armrest is parallel to the length direction of the first connecting rod 94.

Specifically, as shown in fig. 7 and 8, when the second groove is engaged with the other end of the locking piece 962, that is, the other end of the locking piece 962 is engaged in the second groove (in this case, the wrench 961 is in the initial state), the armrest mechanism is in the folded state. Because one end of the locking block 962 is rotatably connected to the first protruding block 91c in the mounting groove 91a, when the other end of the locking block 962 is located in the second groove, the armrest, the adjusting assembly 96 and the first connecting rod 94 can be fixed to the second locking state of the first connecting rod 94 and the armrest, and the armrest is also folded, the armrest is located at the first lower position adjusted by the armrest, the length direction of the mounting portion 91 of the armrest and the length direction of the first connecting rod 94 form an angle, and the supporting portion 92 of the armrest is parallel to the horizontal line. In the present embodiment, the first link lever 94 and the armrest have two kinds of locking states, i.e., a first locking state (the first groove 9421 engages with the other end of the lock piece 962) and a second locking state (the second groove engages with the other end of the lock piece 962).

In some embodiments of the present invention, as shown in fig. 5 and 6, the first groove 9421 is a square groove, and the other end of the locking block 962 can be engaged with the square groove to allow the armrest mechanism to reach the deployed state. In this embodiment, the other end of the locking piece 962 is formed in a square shape, and the first groove 9421 is formed in a square groove, so that when the square shape of the locking piece 962 is located in the square groove, the first locking state of the armrest mechanism (i.e., the unfolded state of the armrest mechanism) can be stably maintained, and the reliability is improved.

Further, in the present embodiment, as shown in fig. 5 and 6, the second groove includes a square groove portion 9421a and an inclined groove portion 9421b, and the other end of the lock piece 962 is capable of being caught in the square groove portion 9421a to bring the armrest mechanism into the folded state, and the other end of the lock piece 962 positioned in the square groove portion 9421a is capable of sliding out of the second groove through the inclined groove portion 9421 b. In this embodiment, when the square structure of the locking piece 962 is located in the square groove 9421a, the second locking state (i.e., the folded state of the armrest mechanism) between the first connecting rod 94 and the armrest can be stably maintained, and reliability is improved. When the passenger is the disabled person, can be through the supporting part 92 of continuing to push down the handrail, and then make the bellying and the locking piece 942 of head rod 94 descend, and can make bellying and locking piece 942 rotate anticlockwise relative to the handrail, locking piece 962 in mounting groove 91a can pass through inclined plane slot part 9421b roll-off second recess this moment, and then realize that the handrail reaches the second low position of self (handrail mechanism is for dodging the state this moment), also be the extreme low position that handrail self adjusted, adjust handrail mechanism like this, the disabled person of can being convenient for gets on the bus, the convenience that the disabled person got on the bus has been promoted.

In some embodiments of the present invention, as shown in fig. 5 and 6, the adjusting assembly 96 includes a locking member, one end of the locking member is connected to the mounting portion 91, one side of the first connecting rod 94 facing the armrest is provided with a locking groove, and the other end of the locking member can pass through the mounting portion 91 and cooperate with the locking groove, so as to achieve a half-locking state between the armrest and the first connecting rod 94. In this embodiment, the locking member is a wave screw 964, a fixed end of the wave screw 964 is fixed in the mounting groove 91a, an elastic end of the wave screw 964 can pass through the mounting portion 91 and engage with the locking groove of the first connecting rod 94, and at this time, the other end of the locking block 962 just slides out of the second groove through the inclined groove 9421b of the second groove, and the wave screw 964 can fix the locking block 962 when sliding out of the second groove, which is the second low position of the armrest (i.e., the lowest position of the armrest), and is also the half-locked state between the armrest and the first connecting rod 94 and the avoiding state of the armrest mechanism.

Specifically, as shown in fig. 3 and 4, in the present embodiment, when the armrest mechanism is in the unfolded state, the bottoms of the seat assembly 20 and the second connecting rod 95 will abut against each other, and the other end of the locking block 962 is located in the first groove 9421, which both can prevent the four-bar linkage (i.e. the seat assembly, the first connecting rod 94, the second connecting rod 95 and the mounting portion 91) from rotating along the other end of the first connecting rod 94 and one end of the first connecting rod 94, respectively, so that the four-bar linkage can overcome the action of the main return spring and achieve the fixing. As shown in fig. 7 and 8, when the armrest mechanism is in the folded state, the other end of the locking piece 962 is located in the second groove, and can block the protrusion of the first link rod 94 and the locking piece 942 of the four-bar linkage mechanism from rotating, so that the four-bar linkage mechanism can overcome the action of the main return spring and achieve the fixation. As shown in fig. 6 and 7, when the armrest mechanism is in the folded state, the person continues to press the armrest mechanism in the folded state, so that the locking block 962 slides out of the second groove through the inclined groove 9421b of the second groove, and at this time, the elastic end of the wave screw 964 passes through the mounting portion 91 and engages with the locking groove of the first connecting rod 94, and the engaging force between the wave screw 964 and the locking groove can overcome the elastic force of the main return spring, i.e., prevent the four-bar linkage from rotating, thereby keeping the armrest mechanism fixed in the retracted state.

In some embodiments of the present invention, as shown in fig. 2, the armrest mechanism further includes a cover plate 93, and the cover plate 93 is disposed on one side of the mounting portion 91 and can seal the mounting groove 91 a. In the present embodiment, the cover plate 93 can protect and seal the adjustment unit 96 located in the mounting groove 91a, and can improve the aesthetic performance of the armrest mechanism.

Specifically, in the present embodiment, as shown in fig. 5 and 6, the rotation point of the first connecting rod 94 and the seat assembly 20 and the rotation point of the second connecting rod 95 and the seat assembly 20 are spaced apart, the rotation point of the first connecting rod 94 and the mounting portion 91 and the rotation point of the second connecting rod 95 and the mounting portion 91 are spaced apart, and the second connecting rod 95 in the present embodiment includes a first connecting portion 951 and a second connecting portion 952, and the first connecting portion 951 and the second connecting portion 952 are disposed at an angle, so that a mechanism similar to a four-bar linkage can be formed among the first connecting rod 94, the second connecting rod 95, the seat assembly and the armrest, and reliability and stability are improved.

Further, the adjustment principle of the armrest mechanism in the present embodiment is: as shown in fig. 4 and 6, assuming that the armrest mechanism is initially in the unfolded state (the wrench 961 is located at the initial position and located in the first groove 9421, that is, the armrest is in the first locked state with the first connecting rod 94, and the armrest is located at the highest adjustment position), when the armrest mechanism needs to be adjusted to the folded state, the hand of the operator can lift the wrench 961 by a certain height (the other end of the locking block 962 is separated from the first groove 9421, that is, the relative rotation between one end of the first connecting rod 94 and the mounting portion 91 of the armrest is possible, and due to the presence of the elastic member, the other end of the locking block 962 can always be guaranteed to abut against the outermost circumference of the locking piece 942 to slide), and then the operator pulls back the support portion 92 of the armrest (after pulling back the handle 961, the wrench 961 can be released), the first connecting rod 94 and the second connecting rod 95 can be driven to rotate counterclockwise (the first connecting rod 94 and the second connecting rod 95 can overcome the elastic force of the main return torsion spring to move back and rotate along the respective rotation axes, and at this time, the unlocked state between the first connecting rod 94 and the other end of the locking block 94 is located in the square groove 9421, and when the armrest mechanism is located in the square groove 9421, the second groove 941, the armrest mechanism is always located at this time, and the second groove 9421, and when the armrest mechanism is located in the armrest mechanism (the second groove 9421).

As shown in fig. 8, when a special crowd gets on the vehicle more difficultly, the armrest needs to be moved down continuously to facilitate a more convenient getting on the vehicle, at this time, the protrusion of the first connecting rod 94 and the locking piece 942 are moved down continuously, and the protrusion and the locking piece 942 are rotated counterclockwise continuously, meanwhile, the other end of the locking block 962 positioned in the square groove 9421a of the second groove slides out of the second groove along the inclined groove 9421b, at this time, the bump screw 964 in the mounting groove 91a passes through the mounting portion 91 and is engaged with the locking groove of the first connecting rod 94, so as to achieve a fixed locking between the armrest, the first connecting rod 94 and the seat assembly (the engaging force between the bump screw 964 and the engaging groove can overcome the elastic force of the main return spring, so as to achieve an avoiding state of the armrest mechanism, so that the special crowd can easily avoid the armrest in a high position to perform the getting on the vehicle operation), at this time, the armrest is in a second low position (i.e., a half-locked state is between the first connecting rod 94 and the armrest.

Specifically, after the person gets on the vehicle, the person only needs to lift the armrest, and the acting force of the manpower is greater than the fitting force of the wave screw 964, and meanwhile, due to the action of the main return spring, the locking block 962 is returned to the square groove 9421a of the second groove, so that the folded state of the armrest mechanism is achieved. If wrench 961 is lifted all the way up and the armrest is lifted, the armrest mechanism will be caused to pass over the collapsed position and eventually reach the expanded position. The utility model provides a handrail mechanism only needs just can carry out the transition of state to handrail and head rod 94 and whole handrail mechanism through adjusting handrail and spanner 961, and the regulative mode is simple and swift, simultaneously the utility model discloses a spanner 961 realizes the linkage relation between handrail, head rod 94, second connecting rod 95 and the adjusting part 96, realizes that the folding and a key of non-electronic key expandes the function, promotion user experience that can be very big.

Through using the car of riding instead of walk among this technical scheme, adopt the handrail, link assembly and adjusting part 96's integrated configuration, the supporting part 92 of handrail is used for supporting the personnel's of taking arm position, the installation department 91 of handrail is used for cooperating with link assembly and is connected, wherein, the both ends of link assembly's first connecting rod and second connecting rod cooperate with seat subassembly and installation department 91 respectively, can reach the motion mechanism of similar four-bar linkage, be convenient for handrail mechanism to carry out the motion of relative position, the adjusting part 96 that lies in mounting groove 91a simultaneously cooperatees with head rod 94, and can control head rod 94 and handrail to fix at least one locking state, make handrail, head rod 94 and the relative position between the car of riding instead of walk adjustable, finally realize the different states that handrail mechanism required, wherein, the utility model provides a handrail mechanism is including expansion state, fold state and dodge the state, all can be realized through the cooperation between adjusting part 96, link assembly and the handrail, overall structure is simple, and the regulation mode is convenient, has promoted certain user experience.

The scooter can be provided with the handrail mechanism or not according to the requirements of users.

In order for the scooter to provide relatively stable support for the seat assembly 20 after deployment of the support bar assembly 30, the scooter further includes a locking mechanism 50 for locking the support bar assembly 30 when the seat assembly 20 is moved away from the chassis assembly 10 for deployment.

After the locking mechanism 50 locks the support rod assembly 30, the locking mechanism 50 and the support rod assembly 30 can jointly support the seat assembly 20.

In one embodiment, as shown in fig. 11, the support rod assembly 30 includes a first link 31 and a second link 32; one end of the first link 31 is hinged to the first position of the seat assembly 20, specifically, the first position of the seat plate bracket 21, and the other end of the first link 31 is hinged to the first position of the chassis assembly 10; one end of the second connecting rod 32 is hinged with a second position of the seat assembly 20, specifically, can be hinged with a second position of the seat plate bracket 21, the first position and the second position are arranged at intervals, and the other end of the second connecting rod 32 is hinged with a second position of the chassis assembly 10; the first link 31, the second link 32, the seat assembly 20 and the chassis assembly 10 form a four-bar linkage; when the first link 31 and the second link 32 swing upward, the four-link movement mechanism is switched from the folded state to the unfolded state, and when the first link 31 and the second link 32 swing downward, the four-link movement mechanism is switched from the unfolded state to the folded state; when the driving assembly 40 drives the first link 31 and the second link 32 to swing upwards, the four-link motion mechanism is switched from the folding state to the unfolding state; when the first link 31 and the second link 32 swing downward, the four-link movement mechanism is switched from the unfolded state to the folded state.

Alternatively, the first link 31 is located on the rear side of the second link 32 with respect to the forward direction of the chassis 11. The first link 31 and the second link 32 may be provided in a reasonable number according to a specific supporting strength, and are not particularly limited in this application.

In one embodiment, the first link 31 and the second link 32 are hinged to the chassis 11, respectively.

In order to better store the seat assembly 20 on the chassis assembly 10, and the seat assembly 20 reaches a predetermined position after moving upward and unfolding, the distance between the two hinge shafts on the first link 31 and the second link 32 and the seat assembly 20 is equal to the distance between the two hinge shafts on the first link 31 and the second link 32 and the chassis assembly 10, and on the first plane, the connecting line between the two hinge shafts on the first link 31 and the second link 32 and the seat assembly 20 is parallel to the connecting line between the two hinge shafts on the first link 31 and the second link 32 and the chassis assembly 10. Wherein the first plane is a plane perpendicular to the hinge axis of the first link 31 and the seat assembly 20. The hinge axes of both ends of the first link 31 and the hinge axes of both ends of the second link 32 are parallel to each other. The seat component 20 is in a translational state when being folded and unfolded, does not generate turnover movement, can ensure the accuracy when being folded and unfolded, and can reduce the folding volume after being folded, thereby being convenient for carrying.

The first link 31 and the second link 32 are located below the seat assembly 20, and the hinge axes of the first link 31 and the second link 32 and the seat assembly 20 are located at the bottom of the seat assembly 20, so that the structure can be compact and the use and operation of the walker by a user are not hindered.

In an embodiment, as shown in fig. 9 and 11, the scooter further includes a locking mechanism 50, the first link 31 is connected to the chassis assembly 10 through the locking mechanism 50, and it is also possible that the second link 32 is connected to the chassis assembly 10 through the locking mechanism 50 (the structure is not shown in the figure, and only the structure in which the first link 31 is connected to the chassis assembly 10 through the locking mechanism 50 is shown), and after the seat assembly 20 is moved upward away from the chassis assembly 10 and unfolded, the locking mechanism 50 supports the four-bar linkage mechanism so as to maintain the unfolded state of the four-bar linkage mechanism; when the locking mechanism 50 is unlocked, the seat assembly 20 may be folded by moving downward adjacent to the floor assembly 10 and the four-bar linkage may be folded.

After the seat assembly 20 is unfolded, it is necessary to provide a stable supporting force for the seat assembly 20, and the four-bar linkage mechanism needs to be locked by the locking mechanism 50 so that a person can be prevented from being folded and retracted while sitting on the seat assembly 20.

In one embodiment, as shown in fig. 1, fig. 1 only shows a case where one end of the first support rod 51 is hinged to the first link 31, and does not show a case where one end of the first support rod 51 is hinged to the second link 32. The locking mechanism 50 includes a first support bar 51 and a second support bar 52; one end of the first supporting rod 51 is hinged with the first connecting rod 31 or the second connecting rod 32; one end of the second support rod 52 is hinged with the other end of the first support rod 51, and the other end of the second support rod 52 is hinged with the third position of the chassis component 10; the second link 32 is provided with a latch 53 between its two hinge axes. When the seat assembly 20 is moved upward away from the chassis assembly 10 and unfolded, the first support rod 51 and the second support rod 52 are unfolded to support the four-bar linkage mechanism, so that the four-bar linkage mechanism is maintained in the unfolded state.

After the seat assembly 20 is moved upward away from the floor assembly 10 for deployment, the first and

second support rods

51 and 52 are inclined in the opposite direction to the first link 31 to provide counter support to the first link 31.

Alternatively, the hinge axis of the second support rod 52 and the chassis assembly 10 is located at the front side of the hinge axis between the second link 32 and the chassis assembly 10 compared to the advancing direction of the chassis 11.

In one embodiment, the maximum deployment angle of the second support bar 52 from the first support bar 51 may be 180 ° or approximately 180 °, which may be approximately between 180 ° and 190 °. When the four-bar linkage is unfolded and the maximum unfolding angle of the second support bar 52 and the first support bar 51 is 180 °, the first support bar 51 and the second support bar 52 are inclined in the opposite direction to the first link 31 and the second link 32 so as to form a dead point, and at this time, the first support bar 51 or the hinge shaft between the first support bar 51 and the second support bar 52 is clamped in the clamping block 53, so as to form a stable support for the seat assembly 20.

In the case of the structure that one end of the first support rod 51 is hinged to the first link 31, the locking mechanism 50 may further include a latch 53, the second link 32 is provided with a latch 53 located between two hinge shafts thereof, when the seat assembly 20 moves upward away from the chassis assembly 10 and unfolds the first support rod 51 and the second support rod 52, and the first support rod 51 or the hinge shaft between the first support rod 51 and the second support rod 52 may slide into the latch 53 to play a role in buffering; when the seat assembly 20 is folded downward near the chassis assembly 10, the first support rod 51 or the hinge shaft between the first support rod 51 and the second support rod 52 can slide out of the latch 53, and the locking mechanism 50 releases the locking state of the four-bar linkage.

Alternatively, the latch 53 may be made of a non-metal elastic material, such as teflon, rubber, etc.

As shown in fig. 11, the latch 53 may be fixed on the second link 32, or may be integrally formed with the second link 32, which is not limited herein. The latch 53 may have a concave arc surface facing the first link 31, so as to facilitate the engagement of the first support rod 51 or the hinge shaft between the first support rod 51 and the second support rod 52, and facilitate the application of external force to the first support rod 51 to contact the latch state, so that the seat assembly 20 is stored in the chassis assembly 10.

In one embodiment, as shown in fig. 11, the walker further comprises a first connecting assembly 60, the first connecting assembly 60 can be a first cable assembly, and the seat assembly 20 can drive the first support rod 52 to swing through the first connecting assembly 60. The linked unlocking of the support bar assembly 50 is accomplished by the first link assembly 60 to accomplish the folding operation of the seat assembly 20.

The hinge shaft between the backrest support 22 and the seat plate support 21 is a first hinge shaft 25, the first hinge shaft 25 is in driving connection with the second support rod 52 through a first connection assembly 60, and the backrest support 22 has an unfolding position and a folding position on the seat plate support 21; when the backrest frame 22 is switched from the unfolded position to the folded position, the backrest frame 22 drives the first support rod 51 to swing through the first connecting assembly 60, so that the first support rod 51 and the second support rod 52 can be folded.

In one embodiment, the backrest frame 22 drives the first supporting rod 51 or the hinge shaft between the first supporting rod 51 and the second supporting rod 52 to swing out of the block 53 through the first connecting assembly 60, so that the seat plate frame 21 can move towards the chassis assembly 10 and be clamped with the chassis assembly 10; when the backrest frame 22 is switched from the folded position to the unfolded position, the backrest frame 22 drives the first support rod 51 or the hinge shaft between the first support rod 51 and the second support rod 52 to swing into the fixture block 53 through the first connecting assembly 60, so that the first support rod 51 and the second support rod 52 are folded.

The first connecting component 60 is pulled by the backrest support 22, so that the first connecting component 60 pulls the first support rod 51 or the hinge shaft between the first support rod 51 and the second support rod 52 out of the fixture block 53, the included angle between the first support rod 51 and the second support rod is smaller than 180 degrees, the locking state of the four-bar linkage mechanism is released, the seat plate support 21 is folded by the backrest support 22, the backrest support 22 is pressed downwards, the seat component 20 moves downwards and is clamped with the chassis component 10, the folding of the scooter is realized, the operation of the whole process is simple, and the folding scooter is suitable for being operated and used by the elderly people.

In one embodiment, as shown in fig. 11, the first connection assembly 60 includes a first rope pulley 61 and a first cable 62, and the first rope pulley 61 is connected to the hinge shaft between the first connection rod 31 and the first support rod 51, which can also be: a hinged shaft connection between the first sheave 61 and the second link 32 and the first support 51 (this structure is not shown in the figure, and only the hinged shaft connection between the first sheave 61 and the first link 31 and the first support 51 is shown); one end of the first wire rope 62 is connected with the first hinge shaft 25, and the other end of the first wire rope 62 is wound on the first rope pulley 61; when the backrest support 22 is switched between the unfolded position and the folded position, the first rope pulley 61 can be driven by the first wire rope 62 to rotate, so that the first support rod 51 or the hinge shaft between the first support rod 51 and the second support rod 52 can swing into the fixture block 53 and out of the fixture block 53, and the first support rod 51 and the second support rod 52 can be folded (swing into the fixture block 53) or unfolded (swing out of the fixture block 53).

Specifically, as shown in fig. 11 and 12, the first connecting assembly 60 may further include a wire rope winding wheel 63, the wire rope winding wheel 63 may be rotatably disposed on the first hinge shaft 25, the wire rope winding wheel 63 is fixedly connected to the backrest support 22, one end of the first wire rope 62 is fixedly and partially wound on the wire rope winding wheel 63, the first rope pulley 61 is fixedly disposed on the hinge shaft between the second support rod 52 and the first link 31 support, the hinge shaft between the second support rod 52 and the first link 31 support is fixedly and relatively rotatably connected to the second support rod 52, and the other end of the first wire rope 62 is fixedly and partially wound on the first rope pulley 61.

The first cable 62 may be of an externally sleeved configuration and may be in communication with the structure of the bicycle brake cable.

When the backrest support 22 is pressed to fold the backrest support 22 towards the seat plate support 21, the first steel wire rope 62 pulls the first support rod 51 to swing, so that the first support rod 51 or a hinge shaft between the first support rod 51 and the second support rod 52 slides out of the fixture block 53, the locking state of the four-bar linkage mechanism is released, the backrest support 22 is continuously pressed to enable the seat assembly 20 to move downwards to realize linkage of the seat plate support 21 and the backrest support 22 in a folding mode, and the folding operation steps of the scooter can be reduced.

In one embodiment, the first connection assembly 60 is electrically driven to rotate the first sheave 61. Specifically, a winch is rotatably connected to the seat assembly 20, a torsion spring is disposed on a rotating shaft of the winch to make the first connecting assembly 60 in a contracted state so as to keep the first connecting assembly 60 and the first rope pulley 61 taut, a motor is disposed on the seat assembly 20, the winch is disposed on a motor shaft, one end of the first connecting assembly 60 is wound on the winch, the other end of the first connecting assembly 60 is connected to the first supporting rod 51 or the second supporting rod 52, and the first connecting assembly 60 is driven by the rotation of the motor to pull the first supporting rod 51 or the second supporting rod 52 to rotate, so that the first supporting rod 51 or a hinge shaft between the first supporting rod 51 and the second supporting rod 52 slides out of the clamping block 53, and the locking state of the four-bar linkage mechanism is released. The unlocking of the four-bar linkage mechanism is realized through the rotation of the motor.

The following description will be made by way of example to illustrate the latching structure of the seat assembly 20 and the floor assembly 10 in the folding seat of the present application.

According to an embodiment of the present application, as shown in fig. 12 and 13, the scooter further includes a second connecting assembly 70, the seat assembly 20 further includes a hook 23 and a handle 24, the hook 23 is connected to the bottom of the seat plate bracket 21 through an elastic member, and the hook 23 has a locking position and a locking releasing position at the bottom of the seat plate bracket 21; the buckle 24 is rotatably arranged on the backrest bracket 22, the hinge shaft between the buckle 24 and the backrest bracket 22 is a second hinge shaft 26, and the buckle 24 has a first rotating position and a second rotating position; both ends of the second connecting assembly 70 are connected with the second hinge shaft 26 and the hook 23; when the buckle 24 is switched from the second rotation position to the first rotation position after the seat assembly 20 and the chassis assembly 10 are folded together, the buckle 24 pulls the hook 23 through the second connection assembly 70 to move from the clamping position to the clamping release position, so that the hook 23 is separated from the chassis assembly 10.

The first hinge shaft 25 and the second hinge shaft 26 may be transversely provided, which means directions of left and right sides of the chassis 11.

In order to facilitate the clamping connection between the hook 23 and the chassis assembly 10, a clamping groove or a hanging buckle 13 can be arranged on the chassis assembly 10, so that the hook 23 can be clamped when moving to the clamping groove or the hanging buckle 13.

Specifically, the catch 23 may be disposed at a bottom position forward of the seat assembly 20.

As shown in fig. 12, a first torsion spring 27 may be provided on the hinge shaft between the catcher 24 and the back bracket 22, and the first torsion spring 27 serves to maintain the catcher 24 at the first rotational position. The wire at both ends of the first torsion spring 27 abuts against the back bracket 22 and the catcher 24 so that the catcher 24 can rotate with respect to the back bracket 22. The catcher 24 maintains the first rotational position under the torsion force of the first torsion spring 27, and the catcher 24 can be snapped to the second rotational position by a person catching the catcher 24 against the torsion force of the first torsion spring 27. After the seat assembly 20 and the chassis assembly 10 are unlocked, the seat assembly 20 is lifted, the handle 24 can be loosened, and the hook 23 is automatically retracted to the clamping position from the clamping releasing position under the action of the elastic component, so that the hook 23 is automatically clamped with the chassis assembly 10 by pressing the seat assembly 20 after the scooter is folded next time.

To facilitate automatic snapping of the catch 23 of the seat assembly 20, the snap-fit condition is maintained. In an embodiment, the hook 23 is rotatably disposed at the bottom of the seat plate bracket 21, and a second torsion spring is disposed on the hinge shaft between the hook 23 and the seat plate bracket 21, that is, the elastic component is the second torsion spring, and the second torsion spring is used for keeping the hook 23 at the clamping position.

Optionally, the hook body of the hook 23 is arranged forward relative to the scooter, a clamping groove or a buckle is arranged on the chassis 11 of the chassis component 10, when the seat component 20 is folded onto the chassis component 10, the clamping groove and the hook body of the hook 23 are arranged relatively, and the hook body of the hook 23 is clamped into the clamping groove under the torsion seat of the second torsion spring.

In one embodiment, the connection between the locking handle 24 and the backrest support 22 may also be via a tension spring to hold the locking handle 24 in the first rotational position.

According to an embodiment of the present application, as shown in fig. 12, the second connection assembly 70 includes a second sheave 71 and a second wire rope 72; the second rope pulley 71 is sleeved on the second articulated shaft 26 and is connected with the buckle 24; one end of a second steel wire rope 72 is connected with the second rope pulley 71, and the other end of the second steel wire rope 72 is connected with the hook 23; when the handle 24 is switched from the second rotational position to the first rotational position, the handle 24 pulls the hook 23 through the second rope to move from the engagement position to the engagement release position.

Alternatively, the second cable 72 may be a cable member sleeved with a sleeve, which is the same as the brake cable of the bicycle. One end of the sleeve may be fixed at a rear position of the seat plate bracket 21 and the other end thereof may be fixed at a front position of the seat plate bracket 21.

After the seat assembly 20 is clamped with the chassis assembly 10, the second connecting assembly 70 can pull the hook 23 to move backwards by buckling the handle 24. The hooks 23 are disengaged from the snap grooves or snaps to unlock the seat assembly 20 from the floor assembly 10 after the snap engagement.

In one embodiment, a button may be disposed at the front side of the seat assembly 20, and the button is elastically connected to the hook 23, when the hook 23 is engaged with the chassis assembly 10, the hook 23 can be retracted toward the rear side of the scooter by pressing the button to release the engaged state, at this time, the seat assembly 20 moves upward under the driving force of the driving assembly 40, and the supporting rod assembly 30 automatically expands from the folded state. The automatic unfolding of the scooter is realized by a one-key triggering mode.

In order to keep the backrest support 22 in a folded state after folding, the volume of the scooter after folding is reduced. As shown in fig. 12, the present application further includes an angle adjusting mechanism 80 in the seat assembly 20, the buckle handle 24 is connected to the first hinge shaft 25 through the angle adjusting mechanism, and the angle adjusting mechanism 80 has two states of locking and unlocking; when the handle 24 is switched from the first rotational position to the second rotational position, the angle adjusting mechanism 80 is in the unlocked state, and the backrest support 22 can rotate at any position between the folded position and the unfolded position; the angle adjustment mechanism 80 can lock the back bracket 22 in the folded position and the unfolded position.

The angle adjustment structure can maintain the back support frame 22 in at least two states, i.e., a folded state and an unfolded state. When in the folded condition, facilitates stowing of the seat assembly 20, and when in the unfolded condition, facilitates use.

According to an embodiment of the present application, as shown in fig. 12, the angle adjusting mechanism 80 includes a sheave 81, a pawl 82, and a link 83; the grooved pulley 81 is sleeved on the first hinge shaft 25 and connected with the first hinge shaft 25; the claw 82 is hinged on the backrest support 22, the claw 82 is matched and connected with a clamping groove on the grooved wheel 81, and a first locking position and a second locking position are arranged on the grooved wheel 81; one end of the connecting rod 83 is hinged with the first position of the buckle 24, the hinge axis of the connecting rod 83 and the buckle 24 is relatively eccentrically arranged with the axis of the second hinge shaft 26, the other end of the connecting rod 83 is hinged with the claw 82, and the hinge axis between the connecting rod 83 and the claw 82 is relatively eccentrically arranged with the hinge axis between the claw 82 and the backrest bracket 22; when the handle 24 is switched from the first rotation position to the second rotation position, the claw 82 can be disengaged from the clamping groove; when the latch 82 is in the first latched position, the back bracket 22 is in the deployed position; when the latch 82 is in the second locked position, the back bracket 22 is in the folded position.

When the handle 24 is switched from the first rotational position to the second rotational position, the handle 24 pulls the pawl 82 to rotate away from the grooved wheel 81 through the link 83, so that the pawl 82 can be disengaged from the grooved wheel 81. When the handle 24 is released, the handle 24 is automatically retracted from the second rotational position, the pawl 82 contacts the grooved wheel 81, and the pawl 82 slides into the slot of the grooved wheel 81 by rotating the back bracket 22.

The slot in the grooved wheel 81 is located on the outer circumferential surface of the grooved wheel, and at least two slots may be provided, wherein one slot is provided at the position of the corresponding claw 82 at the slot wheel 81 when the backrest support 22 is in the unfolded position, and the other slot is provided at the position of the corresponding claw 82 at the slot wheel 81 when the backrest support 22 is in the folded position.

The grooved pulley 81 can be replaced by a ratchet wheel, and the pawl 82 can be a pawl.

To achieve automatic deployment of the walker, the drive assembly 40 is illustratively listed below.

In one embodiment, the drive assembly 40 includes an actuator that is coupled to the seat assembly 20 at one end and to the chassis assembly 10 or the support bar assembly 30 at the other end.

The actuator may comprise a pneumatic actuator or an electric actuator.

In one embodiment, the pneumatic actuator may be a pneumatic spring; the electric actuator may be an electric push rod.

The actuating member is preferably a pneumatic spring, and the support rod assembly 30 can be deployed under the elastic force of the pneumatic spring without being controlled by electric drive, thereby further achieving the deployment of the seat assembly 20. Is beneficial to reducing the cost and saving the electric energy of the electric wheelchair.

In the case of a pneumatic spring, one end of the pneumatic spring is connected to the seat assembly 20, and the other end of the pneumatic spring is connected to the chassis assembly 10 or the support bar assembly 30.

Alternatively, one end of the pneumatic spring is attached to the bottom of the seat assembly 20 and the other end of the pneumatic spring is attached to the second link 32 of the support bar assembly 30. The structure is more compact, and the folding is more facilitated.

In order to make the folding process of unfolding of car of riding instead of walk more reliable, this application still provides a helping hand structure.

According to an embodiment of the present application, the driving assembly 40 further includes a power assist member for providing power assistance when the support rod assembly 30 is deployed.

Specifically, the power assisting member includes a third torsion spring 41, and the third torsion spring 41 is disposed on at least one hinge shaft of the support rod assembly 30 and/or on a hinge shaft between the backrest bracket 22 and the seat plate bracket 21.

The third torsion spring 41 can provide assistance for the expansion of each rod in the support rod assembly 30 and also can provide assistance for the expansion of the backrest on the seat plate bracket 21, so that the reliability of the expansion of the scooter is ensured.

Of course, a motor or a steering engine can be connected to at least one hinged shaft of the support rod assembly 30 and/or the hinged shaft between the backrest support 22 and the seat plate support 21, the motor or the steering engine is used for driving the unfolding between the support rod assembly 30 and the backrest, and the motor or the steering engine is used as a power assisting element. Compared with the torsion spring adopted as the power assisting element, the equipment cost is increased. It is preferable to use the third torsion spring 41.

As shown in fig. 14, in the process of folding and unfolding the backrest assembly, the folding and unfolding of the scooter is realized by adopting a linkage mode, the first connecting assembly and the second connecting assembly are driven by a rope, so that the structure is more compact, the folded volume is smaller after the folding, and as can be seen from fig. 7, one part of the supporting rod assembly is folded to lower the chassis, and the backrest assembly and the seat plate assembly are basically horizontal and are more convenient to carry and place.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A scooter, comprising:

a chassis assembly;

a seat assembly;

2. The walker of claim 1 wherein the seat assembly includes a back bracket and a seat pan bracket, the back bracket being hinged at a rearward location of the seat pan bracket, the back bracket having a back folded condition and a back unfolded condition on the seat assembly.

3. The scooter of claim 2 wherein the seat assembly further comprises two arm rest mechanisms foldably connected to opposite sides of the seat pan support, each arm rest mechanism being foldable between front and rear road wheels of the chassis assembly when the support bar assembly is switched from the unfolded state to the folded state.

4. The walker of claim 3 wherein each of said armrest mechanisms comprises:

the handrail comprises a mounting part and a supporting part, the supporting part is arranged at the top end of the mounting part, and one side of the mounting part is provided with a mounting groove;

5. The walker of claim 2 wherein the support bar assembly comprises:

6. The scooter of claim 5 further comprising a locking mechanism, wherein the first linkage is connected to the chassis assembly through the locking mechanism, or wherein the second linkage is connected to the chassis assembly through the locking mechanism,

when the locking mechanism is unlocked, the seat assembly can move downwards close to the chassis assembly to be folded, and the four-bar linkage mechanism can be folded.

7. The scooter of claim 6 wherein the locking mechanism comprises:

8. The walker as claimed in claim 7 wherein when one end of the first support rod is pivotally connected to the first link, the locking mechanism further comprises a latch, the second link is provided with a latch between two hinged axes thereof, when the seat assembly is moved upwardly away from the chassis assembly and unfolded, the first support rod and the second support rod are unfolded, and the first support rod or the hinged axis between the first support rod and the second support rod can be latched in the latch; when the seat component moves downwards and is folded close to the chassis component, the first support rod or the hinge shaft between the first support rod and the second support rod can slide out of the clamping block.

9. The walker of claim 7 further comprising a first attachment assembly, the articulation axis between the back bracket and the seat pan bracket being a first articulation axis, the first articulation axis being connected to the second support bar by a first attachment assembly, the back bracket having an unfolded position and a folded position on the seat pan bracket; the backrest bracket can drive the first supporting rod to swing through the first connecting component, so that the first supporting rod and the second supporting rod are folded.

10. The walker of claim 9 wherein the first connection assembly comprises:

a first sheave connected to a hinge shaft between the first link and the first support rod or a hinge shaft between the second link and the first support rod;

11. The walker of claim 10 further comprising a second connection assembly, the seat assembly further comprising:

12. The scooter of claim 11 wherein the hinged axis between the handle and the backrest frame is provided with a first torsion spring for holding the handle in a first rotational position and/or the first torsion spring is used for holding the handle in a first rotational position

The clamping hook is rotatably arranged at the bottom of the seat plate bracket, the elastic part is a second torsion spring, and the second torsion spring is used for keeping the clamping hook at a clamping position;

and/or, the second connection assembly comprises:

the second rope wheel is sleeved on the second articulated shaft and is connected with the buckle;

13. The walker of claim 11 wherein the seat assembly further comprises an angle adjustment mechanism; the handle is connected with the first hinge shaft through an angle adjusting mechanism, and the angle adjusting mechanism has two states of locking and unlocking;

14. The scooter of claim 13 wherein the angular adjustment mechanism comprises:

the clamping jaw is hinged to the backrest support, is matched and connected with the clamping groove in the grooved pulley and is provided with a first locking position and a second locking position;

15. The walker of claim 2 wherein the drive assembly comprises:

and one end of the actuating component is connected to the seat assembly, and the other end of the actuating component is connected to the chassis assembly or the support rod assembly.

16. The walker of claim 15 wherein said actuators include a pneumatic spring and/or booster, said pneumatic spring having one end attached to said seat assembly and the other end attached to said chassis assembly or said strut assembly;