CN114537571A

CN114537571A - Backrest and armrest linkage folding seat and scooter

Info

Publication number: CN114537571A
Application number: CN202210393434.7A
Authority: CN
Inventors: 关明旺; 吴世立; 温汉关; 梁家盛
Original assignee: Guangdong Yinhu Medical Technology Co ltd
Current assignee: Guangdong Yinhu Medical Technology Co ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-05-27

Abstract

The invention relates to the technical field of folding seats and scooter equipment, in particular to a backrest and armrest linkage folding seat and a scooter, wherein the folding seat comprises a seat, a backrest, armrests and a first linkage mechanism, the first linkage mechanism comprises a linkage sleeve and a limiting pin arranged on the armrests, the backrest is in transmission connection with the linkage sleeve, the linkage sleeve is provided with a limiting groove, the limiting pin is positioned in the limiting groove and can move back and forth within the length range of the limiting groove, the backrest can rotate to drive the linkage sleeve to rotate, the limiting pin is pushed by the side walls of the limiting groove to drive the armrests to rotate, the linkage of the backrest and the armrests is realized, and the armrests can also rotate independently after rotating to an expansion position along with the backrest to avoid a side channel so as to facilitate getting on and off; the scooter adopts the backrest and the armrest linkage folding seat, and simultaneously, the seat and the backrest also adopt a linkage design, thereby realizing the common linkage of seat lifting, backrest unfolding and folding and armrest unfolding and folding.

Description

Backrest and armrest linkage folding seat and scooter

Technical Field

The invention relates to the technical field of folding seats and scooter equipment, in particular to a backrest handrail linked folding seat and a scooter.

Background

The backrest and the armrests of the folding seat can be folded when not in use, so that the size is reduced, the folding seat is convenient to store and transport, and the folding seat is convenient to use, so that the folding seat is widely applied to a scooter which meets the requirements of the elderly population and people with physical inconvenience. However, in most of the folding seats of the scooter in the market at present, the unfolding and folding of the backrest and the unfolding and folding of the armrests cannot be linked, and the folding seats need to be rotated, unfolded and folded respectively, so that the use is inconvenient; although some foldable seats can realize linkage unfolding and folding of the backrest and the armrests, generally, the backrest and the armrests are linked by pull wires, the carrying capacity of the pull wire linkage mechanism is relatively poor because the pull wire linkage mechanism is not rigidly supported, and in the existing backrest and armrest linkage mechanism, when the armrests are rotated to the unfolding positions along with the linkage of the backrest, the armrests cannot be independently rotated, so that the armrests block a passage on the side surfaces of the seats, and a user who is inconvenient to move can get on or off the seats from the side surfaces.

Disclosure of Invention

In order to overcome the defects in the prior art, one of the tasks of the invention is to provide a backrest and armrest linkage folding seat which can realize linkage unfolding and folding of a backrest and armrests, and the armrests are supported by a rigid structure and have strong bearing capacity; the second task of the invention is to provide a scooter, which adopts the backrest and the armrests to link and fold the seat, and simultaneously adopts the linkage design of the seat and the backrest, thereby realizing the joint linkage of the lifting of the seat, the unfolding and folding of the backrest and the unfolding and folding of the armrests.

One of the tasks of the invention is realized by the following technical scheme:

a back armrest linked folding seat comprising: a fixed shaft which protrudes to two sides is fixedly arranged on the seat; a backrest hinged to the seat; the armrests are respectively positioned on two sides of the seat, are rotatably connected with the fixed shafts on the corresponding sides, and are respectively connected to two sides of the backrest through first linkage mechanisms; the first linkage mechanism comprises a linkage sleeve and a limiting pin fixed on the corresponding armrest, the linkage sleeve is movably sleeved on the fixed shaft and is rotatably connected with the fixed shaft, the linkage sleeve is in transmission connection with the backrest through a transmission mechanism, so that the backrest can drive the linkage sleeve to rotate, a long arc-shaped limiting groove is further formed in the circumferential direction of the linkage sleeve, the limiting pin is located in the limiting groove and can move in a reciprocating mode within the length range of the limiting pin, the linkage sleeve can be driven to rotate when the backrest rotates and unfolds relative to the seat, and therefore the limiting pin can be pushed through one end side wall of the limiting groove and further drives the armrest to rotate and unfold.

According to the backrest and armrest linkage folding seat provided by the technical scheme, in the use process, when a backrest rotates from a folding position to an unfolding position, the linkage sleeve can be driven to rotate, so that the limit pin is pushed by the side wall at one end of the limit groove to drive the armrest to simultaneously rotate to the unfolding position, at the moment, the armrest can be manually and independently rotated backwards until the limit pin abuts against the other end of the limit groove, the armrest is positioned at the avoidance position at the moment, a channel on the side surface of the seat is avoided, a user can conveniently get on and off the seat, the armrest is freely put down to the unfolding position after getting on or off the seat, when the backrest rotates downwards from the unfolding position to the folding position, the limit pin loses the abutting effect of the limit groove, the armrest can simultaneously and automatically rotate to the folding position under the self-weight effect, and linkage unfolding and folding of the backrest and the armrest are realized; and the handrail is supported by rigidity through the propping of the limiting groove and the limiting pin when the handrail is unfolded, so that the handrail has stronger bearing capacity, is safe and firm and is not easy to damage.

The technical solution is further explained below:

in some embodiments, the transmission mechanism includes a first linkage member and a second linkage member, one end of the first linkage member is fixedly connected to the side wall of the linkage sleeve, the other end of the first linkage member protrudes outwards and is hinged to one end of the second linkage member, and the other end of the second linkage member is hinged to the backrest, so that transmission between the backrest and the linkage sleeve is achieved.

In some embodiments, the transmission mechanism further includes a third link member, one end of which is fixedly connected to the backrest, and the other end of which protrudes forwards or backwards and is hinged to the other end of the second link member, so as to realize the hinge connection of the second link member to the backrest.

In some embodiments, the rear end of the seat is fixedly provided with a first support frame protruding upwards, the lower end of the backrest is fixedly provided with a second support frame protruding forwards or backwards, the ends of the first support frame and the second support frame are hinged, so that the backrest and the seat are hinged, and the hinge shaft at the hinge point is parallel to the hinge shaft at the hinge point between the second linkage member and the third linkage member.

In some embodiments, a sleeve joint is fixedly connected to the side surface of the root of the handrail, the sleeve joint is movably sleeved on the outer side of the fixed shaft to realize rotating connection, the limit pin is fixedly arranged on the sleeve joint, the linkage sleeve is of a stepped sleeve structure, one end of the linkage sleeve with a large diameter is movably sleeved on the outer side of the sleeve joint, and one end of the linkage sleeve with a small diameter is movably sleeved on the outer side of the fixed shaft.

In some embodiments, the armrest comprises a support section and a connecting section which are bent with each other, the armrest is rotatably connected with the fixed shaft through a root of the connecting section, the transmission mechanism is a speed reduction transmission mechanism, and when the backrest drives the armrest to rotate, the rotation angular speed of the backrest is greater than that of the armrest; when the armrests are positioned at the folding positions, the connecting sections are flush with the seat; when the armrests rotate to the unfolding position, the connecting sections are located between the seat and the backrest, and the supporting sections are parallel to the seat; when the handrail rotates to the avoiding position, the connecting section is flush with the backrest.

The second task of the invention is realized by the following technical scheme:

a scooter comprises a backrest handrail linkage folding seat, a chassis assembly, a folding support, a second linkage mechanism and a driving mechanism, wherein the chassis assembly comprises a chassis and wheels arranged on the chassis, the seat is connected with the chassis through the folding support, the backrest is in linkage connection with the folding support through the second linkage mechanism, the driving mechanism is used for driving the folding support to unfold or fold, the seat is driven to ascend and descend through the folding support, the backrest is driven to unfold or fold through the second linkage mechanism, and the handrail is driven to unfold or fold through the first linkage mechanism.

When the scooter provided by the invention is used, the driving mechanism drives the folding support to unfold or fold, the folding support drives the seat to lift, the second linkage mechanism drives the backrest to unfold or fold in a rotating manner, the first linkage mechanism drives the armrests to unfold or fold in a rotating manner, the seat is lifted to a proper height, and when the backrest and the armrests rotate to the unfolded positions, the armrests can be manually rotated upwards to enable the armrests to rotate to the avoidance positions, so that the getting-on and getting-off channels on the side surfaces of the seat are opened, a user can get on or off the scooter conveniently, and the linkage of the backrest and the armrests is not influenced.

The conception, specific structure and effects of the present invention will be further described in conjunction with the accompanying drawings to fully understand the objects, features and effects of the present invention.

Drawings

FIG. 1 is a schematic structural view of a back armrest linkage folding seat in a rear side view in embodiment 1;

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

FIG. 3 is a schematic structural view of the back armrest linkage folding seat in the front side view in the embodiment 1;

fig. 4 is a schematic structural view of the scooter in embodiment 2.

The foldable seat comprises a seat 1, a fixed shaft 11, a first support frame 12, a backrest 2, a second support frame 21, armrests 3, a support section 31, a connecting section 32, a sleeve joint 33, a first linkage mechanism 4, a linkage sleeve 41, a limiting groove 411, a limiting pin 42, a first linkage piece 43, a second linkage piece 44, a third linkage piece 45, a backrest armrest linkage foldable seat 10, a chassis component 20, a chassis 201, wheels 202, a foldable support 30, a second linkage mechanism 40 and a driving mechanism 50.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the description of the specific embodiments is intended to be illustrative of the invention and is not intended to limit the invention. In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through intervening elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

as shown in fig. 1-3, a back-rest armrest linkage folding seat 10 includes:

a fixing shaft 11 protruding towards two sides is fixedly arranged at the rear end of the seat 1;

a backrest 2 hinged to the seat 1;

the two armrests 3 are respectively positioned on two sides of the seat 1, vertically and rotatably connected with the fixed shaft 11 on the corresponding side, and respectively connected with two sides of the backrest 2 through first linkage mechanisms;

first link gear 4, including linkage sleeve 41 and the spacer pin 42 of fixing on corresponding handrail 3, linkage sleeve 41 movable sleeve is on fixed axle 11 and carries out rotatable coupling with it, linkage sleeve 41 carries out the transmission with back 2 through drive mechanism and is connected, so that back 2 can drive linkage sleeve 41 and rotate, linkage sleeve 41's circumference still is equipped with long arc spacing groove 411, the length of spacing groove 411 is greater than the external diameter of spacer pin 42, spacer pin 42 is located spacing groove 411 and can be at its length within range reciprocating motion, can drive linkage sleeve 41 and rotate when back 2 rotates the expansion relative to seat 1, thereby can promote spacer pin 42 through the one end lateral wall of spacing groove 411, and then drive handrail 3 and rotate the expansion.

In the backrest armrest linkage folding seat 10 provided by the embodiment, when the backrest 2 rotates from the folding position to the unfolding position in the use process, the linkage sleeve 41 can be driven to rotate, thereby pushing the limit pin 42 through one end side wall of the limit slot 411 to drive the handrail 3 to rotate to the unfolding position at the same time, because the length of the limiting groove 11 is larger than the outer diameter of the limiting pin 42, the armrest 3 can be manually and independently rotated backwards until the limiting pin 42 abuts against the other end of the limiting groove 411, the armrest 3 is positioned at the avoidance position, the armrest 3 opens the channel on the side surface of the seat 1, a user can conveniently get on or off the vehicle, the armrest 3 can be freely put down to the unfolding position after the user gets on or off the vehicle, when the backrest 2 rotates downwards from the unfolding position to the folding position, the limit pin 42 loses the pushing and supporting effect of the limit slot 411, and the handrail 3 can automatically rotate to the folding position under the self-weight effect, so that the linked unfolding and folding of the backrest 2 and the handrail 3 are realized; moreover, when the armrest 3 is unfolded, the armrest is rigidly supported by the abutting of the limit slot 411 and the limit pin 42, so that the armrest has strong bearing capacity, safety, firmness and difficult damage. The surfaces of the seat 1, the backrest 2, and the armrests 3 may be provided with cushions, which may be made of sponge, rubber, or other materials.

In some embodiments, the transmission mechanism includes a first link member 43, a second link member 44 and a third link member 45, one end of the first link member 43 is fixedly connected to the side wall of the link sleeve 41, the other end protrudes outwards and is hinged to one end of the second link member 44, one end of the third link member 45 is fixedly connected to the backrest 2, and the other end protrudes forwards or backwards and is hinged to the other end of the second link member 44, so as to realize transmission of the backrest 2 and the link sleeve 41. It should be noted that the first link 43, the second link 44, and the third link 45 are rigid objects having a supporting function, and the shapes thereof are not limited.

In some embodiments, the rear end of the seat 1 is fixedly provided with a first support frame 12 protruding upwards, the lower end of the backrest 2 is fixedly provided with a second support frame 21 protruding forwards or backwards, the ends of the first support frame 12 and the second support frame 21 are hinged, so that the backrest 2 and the seat 1 are hinged, and the hinge shaft at the hinge point is parallel to the hinge shaft at the hinge point between the second linkage member 44 and the third linkage member 45. This design makes back 2 rotate and to drive second linkage 44 and deflect, and makes back 2 aerial hinge in seat 1 top, and the folding position of back 2 lies prone on seat 1, and occupation space is littleer.

In some embodiments, the side surface of the root of the armrest 3 is fixedly connected with a sleeve joint 33, the sleeve joint 33 is movably sleeved outside the fixed shaft 11 to realize rotatable connection, the limit pin 42 is fixedly arranged on the sleeve joint 33, the linkage sleeve 41 is in a stepped sleeve structure, one end of the linkage sleeve 41 with a large diameter is movably sleeved outside the sleeve joint 33, and one end of the linkage sleeve 41 with a small diameter is movably sleeved outside the fixed shaft 11. This design is simple in construction and facilitates the coaxial rotatable connection of the sleeve joint 33, the interlocking sleeve 41 and the fixed shaft 11.

In some embodiments, the armrest 3 includes a support section 31 and a connection section 32 that are bent from each other, the armrest 3 is rotatably connected to the fixed shaft 11 through a root of the connection section 32, the transmission mechanism is a speed reduction transmission mechanism, and when the backrest 2 drives the armrest 3 to rotate, the rotation angular speed of the backrest 2 is greater than the rotation angular speed of the armrest 3; when the armrest 3 is in the folded position, the connecting section 32 is flush with the seat 1; when the armrests 3 are rotated to the unfolded position, the connecting section 32 is positioned between the included angles of the seat 1 and the backrest 2, and the supporting section 31 is parallel to the seat 1; when the armrest 3 is rotated to the avoidance position, the connecting section 32 is flush with the backrest 2. Taking the transmission mechanism in the above embodiment as an example, the lengths of the first link 43, the second link 44, and the third link 45 are designed by mathematical calculation, so that the rigid deceleration transmission between the backrest 2 and the armrest 3 can be realized. The handrail of this design convenient to use, the handrail is located when dodging the position, can not exert an influence to the space behind the back, utilizes the drive mechanism in the above-mentioned embodiment moreover, still can realize the rigid linkage of back and handrail.

Example 2:

as shown in fig. 4, a scooter includes a backrest armrest linkage folding seat 10 in embodiment 1, a chassis assembly 20, a folding support 30, a second linkage mechanism 40, and a driving mechanism 50, where the chassis assembly 20 includes a chassis 201 and wheels 202 mounted on the chassis 201, the seat 1 is connected to the chassis 201 through the folding support 30, the backrest 2 is connected to the folding support 30 through the second linkage mechanism 40 in a linkage manner, the driving mechanism 50 is configured to drive the folding support 30 to unfold or fold, and further drive the seat 1 to ascend and descend through the folding support 30, and simultaneously drive the backrest 2 to unfold or fold in a rotation manner through the second linkage mechanism 40, and simultaneously drive the armrest 3 to unfold or fold in a rotation manner through the first linkage mechanism 4.

In the use process of the scooter provided by the invention, the driving mechanism 50 drives the folding support 30 to unfold or fold, the folding support 30 drives the seat 1 to lift, the second linkage mechanism 40 drives the backrest 2 to unfold or fold in a rotating manner, the first linkage mechanism 4 drives the handrail 3 to unfold or fold in a rotating manner, the seat 1 is lifted to a proper height, and when the backrest 2 and the handrail 3 rotate to the unfolded positions, the handrail 3 can be manually rotated upwards to enable the handrail 3 to rotate to an avoidance position, so that a boarding and alighting channel on the side surface of the seat 1 is opened, a user can conveniently get on or off the scooter, and the linkage of the handrail 3 of the backrest 2 is not influenced.

The above description is only a preferred embodiment of the application and is intended to illustrate the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A backrest armrest linkage folding seat is characterized by comprising:

a seat, on which a fixing shaft protruding to both sides is fixed;

a backrest hinged to the seat;

the two armrests are respectively positioned on two sides of the seat, are rotatably connected with the fixed shaft on the corresponding side, and are respectively connected to two sides of the backrest through first linkage mechanisms;

the first linkage mechanism comprises a linkage sleeve and a limiting pin fixed on the corresponding armrest, the linkage sleeve is movably sleeved on the fixed shaft and is rotatably connected with the fixed shaft, the linkage sleeve is in transmission connection with the backrest through a transmission mechanism so that the backrest can drive the linkage sleeve to rotate, a long arc-shaped limiting groove is further formed in the circumferential direction of the linkage sleeve, the limiting pin is located in the limiting groove and can move in a reciprocating mode within the length range of the limiting pin, the linkage sleeve can be driven to rotate when the backrest rotates and unfolds relative to the seat, and therefore the limiting pin can be pushed through one end side wall of the limiting groove and further drives the armrest to rotate and unfold.

2. The back-rest armrest linkage folding seat as claimed in claim 1, wherein the transmission mechanism comprises a first linkage member and a second linkage member, one end of the first linkage member is fixedly connected with the side wall of the linkage sleeve, the other end of the first linkage member protrudes outwards and is hinged with one end of the second linkage member, and the other end of the second linkage member is hinged with the back rest, so that the transmission between the back rest and the linkage sleeve is realized.

3. The back-rest armrest linkage folding seat as claimed in claim 2, wherein the transmission mechanism further comprises a third linkage member, one end of the third linkage member is fixedly connected with the back rest, and the other end of the third linkage member protrudes forwards or backwards and is hinged with the other end of the second linkage member, so that the second linkage member is hinged with the back rest.

4. The back-rest armrest linkage folding seat as claimed in claim 3, wherein the rear end of the seat is fixedly provided with a first support frame protruding upwards, the lower end of the back rest is fixedly provided with a second support frame protruding forwards or backwards, the ends of the first support frame and the second support frame are hinged, so that the back rest and the seat are hinged, and the hinge shaft at the hinge point is parallel to the hinge shaft at the hinge point between the second linkage member and the third linkage member.

5. The backrest armrest linkage folding seat as claimed in claim 1, wherein a sleeve joint is fixedly connected to the lateral surface of the root of the armrest, the sleeve joint is movably sleeved outside the fixed shaft for rotatable connection, the limit pin is fixedly arranged on the sleeve joint, the linkage sleeve is of a stepped sleeve structure, one end of the linkage sleeve with a large diameter is movably sleeved outside the sleeve joint, and one end of the linkage sleeve with a small diameter is movably sleeved outside the fixed shaft.

6. The backrest armrest linkage folding seat as claimed in claim 1, wherein the armrest comprises a support section and a connecting section which are bent with each other, the armrest is rotatably connected with the fixed shaft through the root of the connecting section, the transmission mechanism is a speed reduction transmission mechanism, and when the backrest drives the armrest to rotate, the rotation angular speed of the backrest is greater than that of the armrest; when the armrests are positioned at the folding positions, the connecting sections are flush with the seat; when the armrests rotate to the unfolding position, the connecting sections are located between the seat and the backrest, and the supporting sections are parallel to the seat; when the handrail rotates to the avoiding position, the connecting section is flush with the backrest.

7. A scooter, characterized in that, comprises the backrest handrail linkage folding seat as claimed in any one of claims 1 to 7, and a chassis component, a folding bracket, a second linkage mechanism and a driving mechanism, wherein the chassis component comprises a chassis and wheels mounted on the chassis, the seat is connected with the chassis through the folding bracket, the backrest is connected with the folding bracket through the second linkage mechanism in a linkage manner, the driving mechanism is used for driving the folding bracket to unfold or fold, then the folding bracket drives the seat to ascend and descend, meanwhile, the second linkage mechanism drives the backrest to rotate and unfold or fold, and meanwhile, the first linkage mechanism drives the handrail to rotate and unfold or fold.