CN213048026U

CN213048026U - Four-wheel vehicle

Info

Publication number: CN213048026U
Application number: CN202020602466.XU
Authority: CN
Inventors: 李庆丰
Original assignee: Foshan Kelanda Medical Apparatus Techonlogy Co ltd
Current assignee: Foshan Kelanda Medical Apparatus Techonlogy Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-04-27
Anticipated expiration: 2030-04-21

Abstract

The utility model relates to a four-wheel vehicle, comprising two side bottom frames, wherein the lower end of the bottom frame is provided with a movable wheel, the upper end is provided with a handle, a foldable cushion and a backrest are arranged between the bottom frames, the bottom frame is movably connected with the handle through a positioning device, the positioning device is fixed at the upper end of the bottom frame and is provided with a mechanical positioning matched with the handle and an elastic positioning linked with the mechanical positioning, a folding device is arranged between the bottom frames, two sides of the folding device are provided with elastic locking devices, a control handle passing through the cushion is connected between the elastic locking devices, the utility model effectively solves the problem of the reliability of a height adjusting mechanism, is more convenient, rapid and durable, and provides great convenience for a user in folding operation, so that the user can rapidly fold and unfold the four-wheel vehicle with one hand, and the posture is stable after the unfolding, which is more beneficial to the daily use of the user.

Description

Four-wheel vehicle

Technical Field

The utility model belongs to the technical field of medical instrument, specifically, relate to a four-wheel car.

Background

As a medical auxiliary device, a four-wheeled vehicle is used for rehabilitation to help a user to move such as walking, so as to accelerate the rehabilitation of the user and reduce inconvenience encountered by the user in daily life.

SUMMERY OF THE UTILITY MODEL

To the technical defect who exists among the background art, the utility model provides a four-wheel car has solved above-mentioned technical problem and has satisfied the actual demand, and concrete technical scheme is as follows:

the utility model provides a four-wheel vehicle, includes the chassis of both sides, the chassis lower extreme is equipped with the removal wheel, and the upper end is equipped with the handle, still be equipped with folding cushion and back between the chassis, through positioner swing joint between chassis and the handle, positioner is fixed in the upper end of chassis, and be equipped with handle complex mechanical positioning and with the elastic positioning of mechanical positioning linkage, the chassis between be equipped with folding device, folding device's both sides are equipped with elasticity locking device, be connected with between the elasticity locking device and pass the control handle of cushion.

As a further technical scheme of the utility model, positioner is still including the installation sleeve of locating the chassis upper end, installation sleeve and handle clearance fit, the installation sleeve inboard is equipped with in the positioning seat of handle contact, fixed connection between positioning seat and the installation sleeve, elastic positioning locates in the positioning seat, mechanical positioning swing joint is in the installation sleeve outside and passes the positioning seat in the handle contact.

As a further technical scheme of the utility model, mechanical positioning includes with installation sleeve articulated rotatory handle, the outline of the articulated department of rotatory handle is the cam form, and the outline conflict of this articulated department be equipped with pass behind installation sleeve and the positioning seat with the locator card bamboo shoot of handle contact.

As a further technical scheme of the utility model, elastic positioning is including locating the reset spring in the positioning seat, reset spring is spacing between positioning seat and installation sleeve, this reset spring cover be equipped with pass behind the positioning seat with the fixture block of handle contact.

As a further technical scheme of the utility model, mechanical positioning with line between the elastic positioning is unanimous with the activity direction of handle in the chassis, the handle below is equipped with the equidistant screens hole of a plurality of along length direction, just distance between the screens hole equals the interval between locator card bamboo shoot and the fixture block.

As a further technical scheme of the utility model, folding device includes the articulated main folding rod of X type, the bottom of main folding rod with the chassis is direct articulated, and the top is equipped with the horizontal pole, the equal cover in cushion both ends is established on the horizontal pole, the one end that main folding rod is close to the horizontal pole articulates there is vice folding rod, vice folding rod also articulates with the chassis, be equipped with the card post on the vice folding rod, elasticity locking device articulate on main folding rod and with the cooperation of card post.

As the utility model discloses a further technical scheme, elasticity locking device include with main folding rod articulated screens board, the one end of screens board be equipped with card post complex bayonet socket, the other end be equipped with main folding rod complex spacing post, the articulated department of screens board is equipped with the reset torsion spring, the control handle cover is established in the one end that the screens board is close to the bayonet socket.

The utility model has the advantages of that: the problem of high adjustment mechanism reliability has effectively been solved, convenient and fast and durable more to for the user provides very big convenience in folding operation, make it can the one hand carry out the folding and the expansion of four-wheel car fast, and the gesture is firm after the expansion, more is favorable to user's daily use.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a sectional structural view of the positioning device 6.

Fig. 3 is a schematic diagram of the positioning device 6.

Fig. 4 shows a schematic view of the folding means 9 in cooperation with the elastic locking means 10.

Fig. 5 is a close-up view of the position of the folding means 9 and the elastic locking means 10.

Wherein: the folding device comprises an underframe 1, a moving wheel 2, a handle 3, a seat cushion 4, a backrest 5, a positioning device 6, a mounting sleeve 61, a positioning seat 62, a mechanical positioning 7, a rotating handle 71, a positioning catch 72, an elastic positioning 8, a return spring 81, a catch block 82, a folding device 9, a main folding rod 91, a cross rod 92, an auxiliary folding rod 93, a catch column 94, an elastic locking device 10, a catch plate 101, a bayonet 102, a limiting column 103, a return torsion spring 104, a lantern ring 105 and a control handle 11.

Detailed Description

Embodiments of the present invention will be described with reference to the accompanying drawings and related embodiments, wherein the following embodiments are only preferred embodiments for better illustrating the present invention, and the embodiments of the present invention are not limited to the following embodiments, and the related essential components of the present invention related to the technical field should be considered as known in the art and can be known and mastered by those skilled in the technical field.

In the description of the present invention, it is to be understood that the terms "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "inner," and the like are used in the orientation or positional relationship indicated in the drawings, merely for the purpose of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Referring to the attached drawing, a four-wheel vehicle, chassis 1 including both sides, 1 lower extreme of chassis is equipped with removes wheel 2, and the upper end is equipped with handle 3, still be equipped with folding cushion 4 and back 5 between the chassis, through 6 swing joint of positioner between chassis 1 and the handle 3, positioner 6 is fixed in the upper end of chassis 1, and be equipped with 3 complex mechanical location 7 of handle and with the elastic positioning 8 of 7 linkages in mechanical location, chassis 1 between be equipped with folding device 9, folding device 9's both sides are equipped with elasticity locking device 10, be connected with between the elasticity locking device 10 and pass the control handle 11 of cushion 4.

The utility model discloses an implementation mode lies in, be telescopic swing joint structure between handle 3 and chassis 1, its flexible and the core of location lies in positioner 6, and positioner 6 carries out dual location locking through the linkage between mechanical location 7 and the elastic location 8, mechanical location 7's benefit is stable, and the benefit of elastic location is nimble, utilize elastic location 7 to carry out preliminary location and mechanical location 7 can carry out complete location, elastic location 7 can not cause the influence to the activity again after the unblock, therefore compromise the flexibility ratio and the reliability of height adjustment; by using the control handle 11, when the four-wheel vehicle is in the unfolding state, the elastic locking device 10 can be conveniently unlocked by pulling the control handle 11, and the locking state of the folding device 9 is released, so that the four-wheel vehicle can be easily folded, and the folding operation is convenient and quick, and can be completed for people with inconvenient actions without complicated operation.

As shown in fig. 1, 2, and 3, in a preferred embodiment, the positioning device 6 further includes a mounting sleeve 61 disposed at the upper end of the chassis 1, the mounting sleeve 61 is movably fitted with the handle 3, a positioning seat 62 contacting the handle 3 is disposed inside the mounting sleeve 61, the positioning seat 62 is fixedly connected with the mounting sleeve 61, and may be in screw connection or in other manners, the elastic positioning element 8 is disposed inside the positioning seat 62, and the mechanical positioning element 7 is movably connected to the outside of the mounting sleeve 61 and passes through the positioning seat 62 to contact the handle 3. The mounting sleeve 61 and the positioning seat 62 are actually matched with each other, the mechanical positioning 7 can be limited by the positioning seat 62, and the elastic positioning 8 can be protected in the mounting sleeve 61 to be matched with the handle 3, so that the reliability is improved.

As shown in fig. 2 and 3, in a preferred embodiment, the mechanical positioning 7 includes a rotating handle 71 hinged to the mounting sleeve 61, an outer contour of a hinge of the rotating handle 71 is cam-shaped, and a positioning catch 72 penetrating through the mounting sleeve 61 and the positioning seat 62 and contacting the handle 3 is abutted to the outer contour of the hinge, so that a user can conveniently perform locking and unlocking operations by means of cam cooperation, the positioning catch 72 can be mechanically positioned after being caught in the positioning position of the handle 3, and a reset piece can be preferably disposed at the positioning catch 72 to conveniently perform unlocking operations.

As shown in fig. 2 and 3, in a preferred embodiment, the elastic positioning element 8 includes a return spring 81 disposed in the positioning seat 62, the return spring 81 is limited between the positioning seat 62 and the mounting sleeve 61, the return spring 81 is sleeved with a latch 82 passing through the positioning seat 62 and contacting the handle 3, the return spring 81 can enable the latch 82 to be conveniently switched between the positioning state and the active state, and the mechanical positioning element 7 is matched to completely position the handle 3, so as to improve reliability and flexibility.

As shown in fig. 2 and 3, in a preferred embodiment, a connection line between the mechanical positioning 7 and the elastic positioning 8 is consistent with a moving direction of the handle 3 in the bottom frame 1, a plurality of positioning holes 31 with equal intervals are arranged below the handle 3 along the length direction, and a distance between the positioning holes 31 is equal to a distance between the positioning catch 72 and the catch 82, so that there is an advantage that any adjacent 2 positioning holes 31 can be positioned by the mechanical positioning 7 and the elastic positioning 8, the handle 3 can move more freely, the positioning reliability is ensured, and the two positioning can be better linked.

As shown in fig. 4 and 5, in a preferred embodiment, the folding device 9 includes a main folding rod 91 hinged in an X-shape, the bottom end of the main folding rod 91 is directly hinged to the base frame 1, a cross rod 92 is disposed at the top end of the main folding rod 91, both ends of the seat cushion 4 are sleeved on the cross rod 92, one end of the main folding rod 91 close to the cross rod 92 is hinged to an auxiliary folding rod 93, the auxiliary folding rod 93 is also hinged to the base frame 1, a clamping column 94 is disposed on the auxiliary folding rod 93, and the elastic locking device 10 is hinged to the main folding rod 91 and is matched with the clamping column 94, so that the folding device 9 can move flexibly, is convenient to operate, and is closer to a labor-saving lever structure.

As shown in fig. 4 and 5, in a preferred embodiment, the elastic locking device 10 includes a locking plate 101 hinged to the main folding rod 91, one end of the locking plate 101 is provided with a bayonet 102 engaged with the locking post 94, the other end is provided with a limiting post 103 engaged with the main folding rod 91, the hinge of the locking plate 101 is provided with a return torsion spring 104, the control handle 11 is sleeved on a collar 105 at one end of the locking plate 101 near the bayonet 102, although not shown, it should be understood that the end of the control handle 11 should be connected to the collar 105, the control handle 11 can preferably retract the seat cushion 4 at the same time when the elastic locking device 10 is unlocked, the return torsion spring 104 can ensure that the locking plate 101 can return to its original position after unlocking, so that the locking post 94 can still be engaged with the bayonet 102 for locking in the next unfolding operation, and the limiting post 103 can limit the maximum stroke of the locking plate 101 to not escape, on the other hand, the unfolding and folding operations of the folding device 9 can be assisted.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a four-wheel vehicle, includes the chassis of both sides, the chassis lower extreme is equipped with the removal wheel, and the upper end is equipped with the handle, still be equipped with folding cushion and back between the chassis, its characterized in that, through positioner swing joint between chassis and the handle, positioner is fixed in the upper end of chassis, and be equipped with handle complex machinery location and with the elastic positioning of mechanical positioning linkage, the chassis between be equipped with folding device, folding device's both sides are equipped with elasticity locking device, be connected with between the elasticity locking device and pass the control handle of cushion.

2. The four-wheeled vehicle of claim 1, wherein the positioning device further comprises a mounting sleeve disposed at the upper end of the underframe, the mounting sleeve is movably engaged with the handlebar, a positioning seat contacting the handlebar is disposed at the inner side of the mounting sleeve, the positioning seat is fixedly connected with the mounting sleeve, the elastic positioning is disposed in the positioning seat, and the mechanical positioning is movably connected to the outer side of the mounting sleeve and passes through the positioning seat to contact the handlebar.

3. The four-wheeled vehicle of claim 2, wherein the mechanical positioning comprises a rotating handle hinged with the mounting sleeve, the outer contour of the hinge joint of the rotating handle is in a cam shape, and the outer contour of the hinge joint is abutted with positioning snap-catches which penetrate through the mounting sleeve and the positioning seat and then contact with the handle.

4. The four-wheeled vehicle of claim 2, wherein the resilient retainer includes a return spring disposed within the retainer, the return spring being captured between the retainer and the mounting sleeve, the return spring being sleeved with a clip that passes through the retainer and contacts the handlebar.

5. The four-wheeled vehicle of claim 1, wherein a connecting line between the mechanical positioning and the elastic positioning is consistent with the moving direction of the handle in the underframe, a plurality of clamping holes with equal intervals are arranged below the handle along the length direction, and the distance between the clamping holes is equal to the interval between the positioning clamping bamboo shoots and the clamping blocks.

6. The quadricycle of claim 1, wherein the folding device comprises a main folding rod hinged in an X shape, the bottom end of the main folding rod is directly hinged to the underframe, the top end of the main folding rod is provided with a cross rod, both ends of the cushion are sleeved on the cross rod, one end of the main folding rod close to the cross rod is hinged to an auxiliary folding rod, the auxiliary folding rod is also hinged to the underframe, a clamping column is arranged on the auxiliary folding rod, and the elastic locking device is hinged to the main folding rod and matched with the clamping column.

7. The four-wheeled vehicle of claim 1, wherein the elastic locking device comprises a clamping plate hinged with the main folding rod, one end of the clamping plate is provided with a bayonet matched with the clamping column, the other end of the clamping plate is provided with a limiting column matched with the main folding rod, the hinged part of the clamping plate is provided with a reset torsion spring, and the control handle sleeve is arranged at one end of the clamping plate close to the bayonet.