CN115317258A

CN115317258A - Walk-substituting vehicle

Info

Publication number: CN115317258A
Application number: CN202210719654.4A
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: 2022-11-11

Abstract

The invention discloses a scooter, which aims to solve the problem that the manual operation process of folding and unfolding of an electric scooter in the prior art is complex. The invention relates to a scooter, comprising: a chassis assembly; a seat assembly including a back assembly and a seat pan assembly, the back assembly hinged at a rearward position of the seat pan assembly; the chassis assembly and the seat assembly are respectively hinged with the supporting rod assembly, so that the seat assembly can be stored on the chassis assembly and can be moved upwards and unfolded from the chassis assembly; a drive assembly for driving the seat assembly upwardly away from the chassis assembly. The folding and unfolding operation of the seat can be realized only by one step in the folding and unfolding processes of the scooter, and the problem that the folding and unfolding operation processes of the electric wheelchair in the prior art are complex and inconvenient is solved.

Description

Scooter

Technical Field

The invention relates to medical equipment, in particular to a scooter.

Background

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

Disclosure of Invention

The invention aims to at least solve the problem that the folding and unfolding manual operation processes of the electric scooter in the prior art are complicated. The purpose is realized by the following technical scheme:

a first aspect of the present invention provides a scooter, including:

a chassis assembly;

a seat assembly including a back assembly and a seat pan assembly, the back assembly being hinged at a rearward position of the seat pan assembly, the back assembly having a back folded condition and a back unfolded condition on the seat assembly;

a support bar assembly, the chassis assembly and the seat assembly being hingedly connected to the support bar assembly, respectively, 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 backrest assembly can be folded and attached to the seat plate assembly, and the bottom of the seat assembly can be attached to the chassis assembly;

the drive assembly may drive the seat assembly to move upwardly away from the chassis assembly, the support bar assembly being switched from the folded state to the unfolded state.

According to the scooter, the seat assembly is unfolded through the driving assembly, the seat assembly is pressed to move downwards, the seat assembly is connected with the chassis assembly in a clamped mode to fold the wheelchair, when the seat assembly needs to be unfolded, the driving assembly drives the seat assembly to move upwards to enable the seat assembly to be automatically unfolded, when the seat assembly is folded, the seat assembly is folded through pressing the seat assembly, operation steps are simplified, namely folding and unfolding operations of the seat are achieved, meanwhile, the size after folding is smaller, and the scooter is convenient to carry.

In addition, the scooter according to the present invention may further have the following additional technical features:

in some embodiments of the present invention, the seat assembly further comprises two armrest mechanisms connected to two sides of the seat plate assembly in a foldable manner, and each armrest mechanism can be folded between two road wheels at the front and the rear of the chassis assembly when the support rod assembly is switched from the unfolded state to the folded state.

In some embodiments of the invention, each of the 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;

the connecting rod assembly comprises a first connecting rod and a second connecting rod, 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 to different positions of the seat plate assembly;

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

In some embodiments of the invention, the backrest assembly comprises a backrest support and the backrest is provided at a front side of the backrest support, the seat plate assembly comprises a seat plate support and a seat cushion provided above the seat plate support, the backrest is foldable and abuts on the seat cushion, and the backrest support is hinged at a rear position of the seat plate support.

In some embodiments of the invention, the support bar 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 link, the second link, the seat assembly, and the chassis assembly form a four-bar linkage motion;

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 folding state to an unfolding state;

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

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

when the seat assembly moves upwards away from the chassis assembly and is unfolded, the four-bar linkage motion mechanism is supported by the locking 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 mechanism can be folded.

In some embodiments of the 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 link, the locking mechanism further includes a latch, the second link is provided with a latch between two hinge shafts of the second link, 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 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.

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 with the second support rod through a first connecting assembly, 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 invention, 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;

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 invention, the scooter further comprises a second connection assembly, the seat assembly further comprising:

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 subassembly with chassis subassembly back together is folded, the attacker by the second rotational position to when first rotational position switches, the attacker passes through second coupling assembling pulling the pothook by the joint position removes to the joint removes the position, makes the pothook breaks away from chassis subassembly.

In some embodiments of the present invention, a first torsion spring is provided on a hinge shaft between the catcher and the backrest bracket for maintaining the catcher at a first rotational position, and/or

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;

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;

when the handle is switched from the second rotating position to the first rotating position, the handle is pulled by the second rope to move the clamping hook from the clamping position to the clamping release position.

In some embodiments of the 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 invention, the angle adjustment mechanism comprises:

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 pulley and is provided with a first locking position and a second locking position;

one end of the connecting rod is hinged to the first position of the buckle, the axis of the connecting rod and the buckle is arranged eccentrically relative to the axis of the second hinge shaft, the other end of the connecting rod is hinged to the jaw, and the axis of the connecting rod and the jaw is arranged eccentrically relative to the axis of the jaw and 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 pawl is in the first locking position, the backrest bracket is in a deployed position;

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

In some embodiments of the 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 support rod assembly.

In some embodiments of the invention, the actuating member 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 the 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 additional 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 by like reference numerals throughout the drawings. In the drawings:

FIG. 1 schematically illustrates an isometric view of an embodiment of the walker of the present invention;

fig. 2 schematically shows an overall structural view of an armrest mechanism according to an embodiment of the 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 view of portion C of FIG. 7;

FIG. 9 schematically illustrates a side view of one embodiment of the mobility scooter of the present invention;

FIG. 10 schematically illustrates a rear view of one embodiment of the scooter of the present invention;

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

FIG. 12 schematically illustrates a partial view of an embodiment of the walker of the present invention;

FIG. 13 schematically illustrates an enlarged, partial view of an embodiment of the mobility scooter of the present invention;

fig. 14 is a schematic view showing 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 and 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 supporting rod 52, the second supporting 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. Armrest mechanism, 91, installation department, 91a, mounting groove, 91b, second protruding piece, 91c, first protruding piece, 92, supporting part, 93, apron, 94, first connecting rod, 941, body part, 942, locking piece, 9421, first recess, 9421a, square slot portion, 9421b, inclined plane slot portion, 95, second connecting rod, 951, first connecting portion, 952, second connecting portion, 96, adjusting part, 961, spanner, 962, locking piece, 963, extension spring, 964, ripples 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 to 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" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "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 in description, the relationship of one element or feature to another element or feature as illustrated in the figures may be described herein using spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "over", and the like. Such relative spatial 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 exemplary term "in 8230 \8230; below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

According to an embodiment of the present invention, a scooter, which may be a wheelchair, a walking device, or the like, is provided. The following description will be given taking a scooter as an example of a wheelchair.

As shown in fig. 1, 9-12, 14, the walker may include a chassis assembly 10, a seat assembly 20, a support bar assembly 30, and a drive assembly 40; the seat assembly includes a back assembly and a seat pan assembly, the back assembly being hinged at a rearward position of the seat pan assembly, the back assembly having a back folded condition and a back unfolded condition on the seat assembly; the chassis assembly 10 and the seat assembly 20 are hingedly connected to a 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 bar assembly 30 is switched from the unfolded state to the folded state, the seat assembly 20 is received on the chassis assembly 10, the backrest assembly is folded and abuts against the seat assembly, and the bottom of the seat assembly 20 abuts against the chassis assembly 20.

The seat assembly 20 can be clamped with the chassis assembly 10 to maintain the folded state, or can be folded without clamping, for example, the hinge shaft between the support rod assembly 30 and the seat assembly 20 or the hinge shaft between the support rod assembly 30 and the chassis assembly 10 is driven by a motor to realize the automatic unfolding or folding of the seat assembly 20 on the chassis assembly 10.

As shown in fig. 1, the chassis assembly 10 includes a chassis 11 and traveling wheels 12, two traveling wheels 12 are respectively disposed on the 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 accommodation space is formed between two front wheels and two rear wheels on the chassis 11 and above the chassis 11, and the folding backrest assembly can be accommodated and accommodated in the accommodation space after being folded and connected with the seat plate assembly, so that the folding volume of the electric scooter can be reduced, and the electric scooter is convenient to carry.

In one embodiment, as shown in fig. 1, the backrest assembly comprises a backrest support 22 and a backrest 28 arranged at the front side of the backrest support 22, the seat plate assembly comprises a seat plate support 21 and a seat cushion 29 arranged above the seat plate support 21, the backrest is foldable and abuts on the seat cushion 29, and the backrest support 22 is hinged at the rear side position of the seat plate support 21.

When the wheelchair is folded, a person presses the seat assembly 20 downward, so that the seat assembly 20 and the chassis assembly 10 are folded on the chassis assembly 10, and the folding operation of the wheelchair is completed. 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, 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. A button can be arranged on the seat component 20 and 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 component 20 to move upwards, so that the scooter can be automatically unfolded.

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 portion 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 matched with the first connecting rod 94, a locking state, a semi-locking state and an unlocking state are 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.

By using the armrest mechanism in the technical scheme, a combined structure of the armrest, the connecting rod assembly and the adjusting assembly 96 is adopted, the supporting portion 92 of the armrest is used for supporting the arm portion of a passenger, and the mounting portion 91 of the armrest is used for being connected with the connecting rod assembly in a matched manner, wherein two ends of a first connecting rod and a second connecting rod of the connecting rod assembly are respectively matched with the seat assembly and the mounting portion 91, so that a four-link-like movement mechanism can be achieved, the armrest mechanism can conveniently move in relative positions, meanwhile, the adjusting assembly 96 in the mounting groove 91a is matched with the first connecting rod 94, at least one locking state is arranged between the first connecting rod 94 and the armrest, the adjusting assembly 96 is used for controlling the first connecting rod 94 and the armrest to switch in different states, so that the relative positions of the armrest, the first connecting rod 94 and the scooter can be adjusted, and different states required by the armrest mechanism can be finally achieved.

Specifically, in the present invention, at least one locking state is provided 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 half-locking state (corresponding to the retracted state of the armrest mechanism). In addition, the first connecting rod 94 and the armrest have an unlocked state therebetween 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 at the bottom side of the supporting portion 92, so that the wrench 961 can be easily 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 on 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, the wrench 961 includes an adjusting portion and a driving portion, the adjusting portion is located at a top end of the driving portion, the adjusting portion is located at an outer side of the mounting portion 91 and at a 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 person 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 portion, the protrusion portion is disposed on one side of the body portion 941, the other end of the body portion 941 is rotatably connected to the seat assembly by an elastic member, and the mounting portion 91 is rotatably sleeved on an outer side of the protrusion portion. In this embodiment, the other end of the main body 941 and the seat assembly can be rotationally connected by a main return torsion spring, that is, a certain elastic force is always provided between the main body 941 and the seat assembly, when the first connecting rod 94 and the seat assembly can rotate, the elastic force of the main return torsion spring can urge the first connecting rod 94 to return in an opposite direction, and the cooperating locking block 962 can 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.

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 is engaged 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 is engaged 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 invention, as shown in fig. 5 and 6, the locking piece 942 is provided with a first groove 9421 and a second groove at intervals in the circumferential direction, and the first groove 9421 and the second groove can be respectively matched with the other end of the locking piece 962, that is, the other end of the locking piece 962 can be respectively matched with the first groove 9421 and the second groove in a locking manner. As shown in fig. 2 and 3, 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 (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 achieve the second locking state of the first connecting rod 94 and the armrest, and also be in the folded state of the armrest mechanism, the armrest is located at the first low 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 locking piece 962) and a second locking state (the second groove engages with the other end of the locking piece 962).

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

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 block 962 can be caught in the square groove portion 9421a to bring the armrest mechanism into the folded state, and the other end of the lock block 962 positioned in the square groove portion 9421a can be slid 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 continuing to push down the supporting part 92 of handrail, and then make the bellying of head rod 94 and locking piece 942 descend, and can make bellying and locking piece 942 rotate counter-clockwise for 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 avoiding the state this moment), also be the extreme low position that handrail self adjusted, adjust handrail mechanism like this, can be convenient for the disabled person to get 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, a locking groove is formed on a side of the first connecting rod 94 facing the armrest, and the other end of the locking member can pass through the mounting portion 91 and be engaged with the locking groove, so that a half-locking state between the armrest and the first connecting rod 94 is achieved. 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 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 the 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 down 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 is engaged 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., the rotation of the four-bar linkage mechanism is prevented, and the armrest mechanism can be 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 covers one side of the mounting portion 91 and can close the mounting groove 91 a. In the present embodiment, the cover plate 93 can protect and close 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 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 the first connecting portion 951 and the 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 in the first groove 9421, i.e. the first locking state is between the armrest and 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, i.e. 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 existence of the elastic member, the other end of the locking block 962 can always be guaranteed to abut against and slide on the outermost circumference of the locking piece 942), and then the operator pulls back the supporting portion 92 of the armrest (the wrench 961 can be released after pulling back the armrest), the first connecting rod 94 and the second connecting rod 95 can be driven to rotate anticlockwise (the first connecting rod 94 and the second connecting rod 95 can overcome the elasticity of the main return torsion spring to move downwards and rotate along respective rotating shafts under the action of human hands, an unlocking state is formed between the armrest and the first connecting rod 94 at the moment), when the other end of the locking block 962 slides to the second groove and is located in the square groove part 9421a of the second groove (due to the action of the main return spring, the other end of the locking block 962 can abut against the side end, facing the first groove 9421, of the square groove part 9421a all the time), the armrest mechanism is in a folding state (the wrench 961 at the moment is in an initial position, namely, a second locking state is formed between the armrest and the first connecting rod 94, and meanwhile, the armrest is located in a first low position at the moment).

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 can be moved down continuously, and the protrusion and the locking piece 942 can be rotated counterclockwise continuously, meanwhile, the other end of the locking block 962 positioned in the square groove 9421a of the second groove can slide out of the second groove along the inclined groove 9421b, at this time, the bump screw 964 in the installation groove 91a can pass through the installation part 91 and be matched 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 clamping force between the bump screw 964 and the matching 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 at a second low position (i.e., a half-locking state is formed between the first connecting rod 94 and the armrest.

Specifically, after the personnel got on the bus, only need be through lifting the handrail, the effort of manpower this moment is greater than the mating force of ripples spiral 964, simultaneously because main return spring's effect can make locking piece 962 return to the second recess in the square slot part 9421a, and then reach handrail mechanism's fold condition. If wrench 961 is lifted all the way up and the armrest is lifted, the armrest mechanism will be caused to go over the folded condition and eventually reach the unfolded condition. The armrest mechanism can change the states of the armrest, the first connecting rod 94 and the whole armrest mechanism only by adjusting the armrest and the wrench 961, the adjusting mode is simple and quick, and meanwhile, the linkage relationship among the armrest, the first connecting rod 94, the second connecting rod 95 and the adjusting assembly 96 is realized through the wrench 961, the non-electric one-key folding and one-key unfolding functions are realized, and the user experience can be greatly improved.

By using the scooter in the technical scheme, the combined structure of the armrest and the connecting rod assembly and the adjusting assembly 96 is adopted, the supporting part 92 of the armrest is used for supporting the arm part of a passenger, the mounting part 91 of the armrest is used for being matched and connected with the connecting rod assembly, wherein two ends of a first connecting rod and a second connecting rod of the connecting rod assembly are respectively matched with the seat assembly and the mounting part 91, a moving mechanism similar to a four-connecting rod can be achieved, the armrest mechanism can move in a relative position conveniently, meanwhile, the adjusting assembly 96 in the mounting groove 91a is matched with the first connecting rod 94, and the first connecting rod 94 and the armrest can be controlled to be switched between a locking state and a semi-locking state and an unlocking state, so that the relative positions of the armrest, the first connecting rod 94 and the scooter can be adjusted, and different states required by the armrest mechanism can be finally achieved.

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 strut assembly 30, the scooter further includes a locking mechanism 50 for locking the strut 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 bar 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, 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 link 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 link 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 folded state to the unfolded 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 moves upward and reaches a predetermined position after being unfolded, 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 axis of the first link 31 and the second link 32 with the seat assembly 20 is 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 the 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 the second link 32 may be connected to the chassis assembly 10 through the locking mechanism 50 (the structure is not shown, and only the structure in which the first link 31 is connected to the chassis assembly 10 through the locking mechanism 50 is shown), when the seat assembly 20 is moved upward away from the chassis assembly 10 to be unfolded, the locking mechanism 50 supports the four-link movement mechanism, so that the four-link movement mechanism maintains the unfolded state; 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 mechanism 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 seated on the seat assembly 20 while avoiding the folding back.

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 assembly 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 chassis assembly 10 for deployment, the first support bar 51 and the second support bar 52 are tilted in a direction opposite to the tilting direction of the first link 31 to provide counter support to the first link 31.

Alternatively, the hinge axis of the second support bar 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 support 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 is moved upward away from the base assembly 10 and unfolded, the first support rod 51 and the second support rod 52 are unfolded, and 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 of 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 to 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 first support rod 51 or the hinge shaft between the first support rod 51 and the second support rod 52 to be clamped, and to facilitate the first support rod 51 to be in a locking state by applying an external force, 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.

In one embodiment, the walker further comprises a first connecting assembly 60, and the seat assembly 20 can drive the first supporting rod 51 to swing through the first connecting assembly 60, so that the first supporting rod 51 and the second supporting rod 52 can be folded or unfolded.

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 bracket 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 out of the latch 53 through the first connection assembly 60, so that the seat plate bracket 21 can move towards the chassis assembly 10 and be latched 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, and the locking state of the four-bar linkage mechanism is released, so that 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 mechanism can be suitable for being operated and used by the elderly people.

In an embodiment, as shown in fig. 11, the first connection assembly 60 includes a first rope pulley 61 and a first wire rope 62, and the first rope pulley 61 is connected to the hinge shaft between the first link 31 and the first support rod 51, which may 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 unfolding position and the folding position, the first rope pulley 61 can be driven by the first wire 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 block 53 and swing out of the block 53, and the first support rod 51 and the second support rod 52 can be folded (swing into the block 53) or unfolded (swing out of the 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 an externally sleeved structure that may be in communication with a structure of a 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 the hinge shaft between the first support rod 51 and the second support rod 52 slides out of the clamping 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 the linkage of the seat plate support 21 and the backrest support 22 in a folding manner, and the operation steps of folding 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 enable the first connecting assembly 60 to be in a contracted state so as to keep the first connecting assembly 60 and the first rope pulley 61 tensioned, a motor is disposed on the seat assembly 20, a 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 hinge shaft between the first supporting rod 51 or the first supporting rod 51 and the second supporting rod 52 slides out of the clamping block 53, so as to release the locking state of the four-bar linkage mechanism. The unlocking of the four-bar linkage mechanism is realized through the rotation of the motor.

The following is an exemplary illustration of the snap fit arrangement of the seat assembly 20 and the pan 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 handle 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 handle 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 axis 25 and the second hinge axis 26 may be transversely provided to refer to 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 structure may be provided on the chassis assembly 10, so that the hook 23 is clamped when moving to the clamping groove or the hanging buckle 13 position.

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 and to maintain the snap-fit condition. 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 a hinge shaft between the hook 23 and the seat plate bracket 21, 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 back bracket 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 handle 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 structure 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 hook 23 is disengaged from the latch groove or the latch to unlock the latch of the seat assembly 20 and the floor assembly 10.

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, and 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 back rest bracket 22 in a folded state after folding, the volume of the folded scooter 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 an 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 may lock the back bracket 22 in the folded position and the unfolded position.

The angle adjustment structure can maintain the back bracket 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 the 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 handle 24, the hinge axis of the connecting rod 83 and the buckle handle 24 and the axis of the second hinge shaft 26 are arranged eccentrically relatively, 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 and the hinge axis between the claw 82 and the backrest support 22 are arranged eccentrically relatively; 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 latched 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 can be automatically retracted from the second rotational position, the pawl 82 contacts the grooved wheel 81, and the pawl 82 slides into the notch of the grooved wheel 81 by rotating the backrest support 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, one of the slots 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 having one end attached to the seat assembly 20 and the other end attached to the floor assembly 10 or the support bar assembly 30.

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 electric drive control, thereby further deploying 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 connected to the bottom of the seat assembly 20 and the other end of the pneumatic spring is connected 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 may 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 drives the support rod assembly 30 and the backrest to unfold, and the motor or the steering engine serves 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 backrest assembly folding and unfolding, 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, the structure is more compact, after the folding, the folded volume is smaller, and as can be seen from fig. 7, one part of the supporting rod assembly is folded to lower the chassis, the backrest assembly and the seat plate assembly are basically horizontal, and the carrying and the placing are more convenient.

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 are included in the scope of 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 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;

the drive assembly can drive the seat assembly to be far away from the chassis assembly to move upwards, and the support rod assembly is switched to the unfolding state from the folding state.

2. The walker of claim 1 wherein the seat assembly further comprises two armrest mechanisms foldably connected to either side of the seat pan assembly, each armrest mechanism being foldable between the front and rear wheels of the chassis assembly when the support bar assembly is switched from the unfolded position to the folded position.

3. The walker of claim 2 wherein each of said 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 assembly;

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.

4. The walker of claim 1 wherein the backrest assembly comprises a backrest frame and the backrest disposed forwardly of the backrest frame, the seat pan assembly comprises a seat pan frame and a seat cushion disposed above the seat pan frame, the backrest is foldable and rests on the seat cushion, and the backrest frame is hinged to the seat pan frame at a rearward position.

5. The walker of claim 4 wherein the strut assembly comprises:

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 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.

6. The walker of claim 5 further comprising a locking mechanism by which the first link is connected to the chassis assembly or by which the second link is connected to the chassis assembly,

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.

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

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 keeps an unfolded state.

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, wherein the hinge axis between the backrest support and the seat pan support is a first hinge axis, the first hinge axis being connected to the second support bar by a first attachment assembly, the backrest support having an unfolded position and a folded position on the seat pan 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.

10. The walker of claim 9 wherein 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;

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

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

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.

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

and/or, the second connection assembly comprises:

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

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.

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 walker of claim 13 wherein the angle adjustment mechanism comprises:

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 to the first position of the buckle, the axis of the connecting rod and the buckle is arranged eccentrically relative to the axis of the second hinge shaft, the other end of the connecting rod is hinged to the jaw, and the axis of the connecting rod and the jaw is arranged eccentrically relative to the axis of the jaw and the back support;

15. The walker of claim 4 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 supporting 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;

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 support and the seat plate support, and the power assisting part is used for providing power assisting when the supporting rod assembly is unfolded.