CN216783694U

CN216783694U - Folding backrest

Info

Publication number: CN216783694U
Application number: CN202122965224.4U
Authority: CN
Inventors: 常杰; 安祁峰; 苏前旭
Original assignee: Tianjin Shenling Technology Development Co ltd
Current assignee: Tianjin Shenling Technology Development Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-06-21
Anticipated expiration: 2031-11-29

Abstract

The utility model provides a folding backrest, which comprises a mounting plate, a backrest support and a backrest main body, wherein the mounting plate is fixedly connected with a rear clothes rack, a strip-shaped through hole is formed in the mounting plate, a round hole corresponding to the strip-shaped through hole is formed in the backrest support, a hinge bolt is arranged on the inner side of the round hole, the backrest support is rotatably connected with the mounting plate through the hinge bolt, a first boss and a second boss are arranged on the backrest support, a limiting plate is fixedly arranged on the mounting plate, the limiting plate limits the first boss or the second boss of the backrest support, and the backrest support is in matched connection with the backrest main body. The utility model has the beneficial effects that: the folding function of the backrest is realized, the use space of the rear clothes rack of the electric bicycle is increased, and the folding backrest is simple in structure, low in production cost and convenient and fast to install.

Description

Folding backrest

Technical Field

The utility model belongs to the technical field of electric bicycles, and particularly relates to a folding backrest.

Background

The back of present electric bicycle is many fixed mounting on back clothes hanger, and this use space that has led to back clothes hanger has received the restriction, and the great personnel of size of being inconvenient for take, also be convenient for load article, if the length of simple extension back clothes hanger can influence electric bicycle's trafficability characteristic, though folding back has appeared in the existing market, the structure of these folding backs is complicated, and manufacturing cost is high, and it is not convenient to install, and the packaging efficiency is low.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a foldable backrest, which solves the problem that the existing backrest is not foldable, and has a simple structure, easy installation and low production cost.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a folding backrest, includes mounting panel, back support, back main part, mounting panel and back clothes hanger fixed connection, it has the bar through-hole to open on the mounting panel, it has the round hole that corresponds with the bar through-hole to open on the back support, the round hole inboard is equipped with the articulated bolt, the back support passes through the articulated bolt and is connected with the mounting panel rotation, be equipped with boss one and boss two on the back support, the limiting plate has set firmly on the mounting panel, the boss one or the boss two of limiting plate to the back support are spacing, the back support is connected with the cooperation of back main part.

Further, two side plates are fixedly arranged on the backrest support, a first boss and a second boss are arranged on the side plates, the number of the mounting plates is two, the limiting plates are fixedly arranged between the two mounting plates, the folding backrest further comprises a spring, one end of the spring is fixedly connected with the limiting plates, and the other end of the spring is installed in a matched mode through a connecting piece and the backrest support.

Furthermore, the connecting piece is fixedly connected with the backrest support, an annular groove is formed in the connecting piece, and the mounting ring at one end of the spring is mounted on the outer side of the annular groove.

Furthermore, a protection plate is fixedly arranged on the backrest support and tightly props against the connecting piece.

Further, the backrest main body comprises a backrest frame, a soft cushion and a rear cover, the backrest frame is fixedly connected with the backrest support, the soft cushion is fixedly arranged at one end of the backrest frame close to the rear clothes hanger, and the rear cover is connected with the backrest frame in a matched mode.

Furthermore, a mounting column is fixedly arranged on the backrest frame, reinforcing ribs are arranged on the mounting column, a threaded hole is formed in the mounting column, a mounting hole corresponding to the threaded hole is formed in the backrest support, and a mounting bolt is arranged on the inner side of the mounting hole and is in threaded connection with the backrest frame.

Furthermore, a guide post is arranged on the rear cover, a reinforcing rib is fixedly arranged on the guide post, a matching post is arranged on the backrest frame, a guide hole corresponding to the guide post is formed in the matching post, and the diameter of the guide hole is matched with that of the guide post.

Compared with the prior art, the folding backrest has the following beneficial effects:

(1) according to the folding backrest, when the hinge bolt is located at the lower end of the strip-shaped through hole, the backrest support is perpendicular to the rear clothes hanger, the limiting plate limits the A face of the first boss, when the hinge bolt is located at the upper end of the strip-shaped through hole, the backrest support is horizontal to the rear clothes hanger, and the limiting plate limits the B face of the second boss, so that the folding function of the backrest is achieved, the using space of the rear clothes hanger of the electric bicycle is increased, and the folding backrest is simple in structure, low in production cost and convenient and fast to install.

(2) According to the folding backrest, when the backrest support is arranged horizontally to the rear clothes rack, the spring is in a stretching state, and the boss two supports tightly press the limiting plate under the action of the tensile force of the spring, so that the structural stability is improved.

(3) According to the folding backrest, the protection plate plays a role in protection, the spring of the electric bicycle is prevented from being wetted by rainwater in the using process, the service life of the spring is prolonged, the protection plate is tightly connected in a propping mode, and the mounting ring of the spring can be prevented from sliding off the connecting piece.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation of the utility model. In the drawings:

fig. 1 is a schematic view of a backrest according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an exploded structure of a backrest according to an embodiment of the present invention;

FIG. 3 is a schematic view of a backrest support structure according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a guard plate according to an embodiment of the present invention;

FIG. 5 is a schematic view of a partial structure of a mounting plate according to an embodiment of the present invention;

FIG. 6 is a schematic view of a partial cross-sectional structure of a lower plate in different states according to an embodiment of the present invention;

FIG. 7 is a schematic view of a partial cross-sectional view of a backrest support according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a backrest frame according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a rear cover according to an embodiment of the present invention.

Description of reference numerals:

1-rear clothes rack; 2-a backrest support; 3-protection plate; 4-a backrest body; 5-a spring; 6-hinge bolt; 7-a connector; 101-mounting plate; 102-bar-shaped through holes; 103-a limiting plate; 201-side plate; 202-round holes; 203-boss one; 204-boss two; 205-mounting holes; 401-cushion; 402-a backrest frame; 403-rear cover; 4021-mounting post; 4022-a mating column; 4031-guide post.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 3, 5 and 6, the folding backrest comprises a mounting plate 101, a backrest support 2 and a backrest main body 4, wherein the mounting plate 101 is fixedly connected with a rear clothes hanger 1, a strip-shaped through hole 102 is formed in the mounting plate 101, a round hole 202 corresponding to the strip-shaped through hole 102 is formed in the backrest support 2, a hinge bolt 6 is arranged on the inner side of the round hole 202, the backrest support 2 is rotatably connected with the mounting plate 101 through the hinge bolt 6, a first boss 203 and a second boss 204 are arranged on the backrest support 2, a limiting plate 103 is fixedly arranged on the mounting plate 101, the limiting plate 103 limits the first boss 203 or the second boss 204 of the backrest support 2, and the backrest support 2 is connected with the backrest main body 4 in a matched mode. During practical use, when the hinge bolt 6 is located at the lower end of the strip-shaped through hole 102, the backrest support 2 is perpendicular to the rear clothes hanger 1, as shown in the upper half view of fig. 6, the limiting plate 103 is limited to the surface A of the first boss 203 at the moment, the backrest support 2 is lifted upwards, the hinge bolt 6 is located at the upper end of the strip-shaped through hole 102, the rotary backrest support 2 is horizontal to the rear clothes hanger 1, as shown in the upper half view of fig. 6, the limiting plate 103 is limited to the surface B of the second boss 204 at the moment, the folding function of the backrest is achieved, the use space of the rear clothes hanger 1 of the electric bicycle is increased, the structure is simple, the production cost is low, and the installation is convenient.

As shown in fig. 7, two side plates 201 are fixedly arranged on the backrest support 2, a first boss 203 and a second boss 204 are arranged on the side plates 201, the number of the mounting plates 101 is two, the limiting plates 103 are fixedly arranged between the two mounting plates 101, the folding backrest further comprises springs 5, one ends of the springs 5 are fixedly connected with the limiting plates 103, and the other ends of the springs are installed in a matched manner with the backrest support 2 through the connecting pieces 7. When the backrest support 2 is arranged perpendicular to the rear hanger 1, the spring 5 is in a compressed state, and the hinge bolt 6 is positioned at the lower end of the strip-shaped through hole 102 under the elastic force of the spring 5. When the backrest support 2 is horizontally arranged on the rear clothes rack 1, the spring 5 is in a stretching state, and the second boss 204 tightly pushes the limiting plate 103 under the action of the tensile force of the spring 5, so that the stability of the structure is improved.

The connecting piece 7 is fixedly connected with the backrest support 2, an annular groove is formed in the connecting piece 7, the mounting ring at one end of the spring 5 is mounted on the outer side of the annular groove, and the annular groove plays a limiting role in limiting the mounting ring and prevents the mounting ring from sliding or falling off.

As shown in fig. 4 and 7, the backrest support 2 is fixedly provided with a protection plate 3, and the protection plate 3 abuts against the connecting member 7. Guard plate 3 has played the guard action, prevents that electric bicycle from being drenched by the rainwater at use spring 5, has improved spring 5's life, and 3 top tight connections of guard plate can also prevent spring 5's collar landing from connecting piece 7 moreover.

As shown in fig. 2, 8 and 9, the backrest main body 4 includes a backrest frame 402, a cushion 401 and a rear cover 403, the backrest frame 402 is fixedly connected with the backrest support 2, the cushion 401 is fixedly arranged at one end of the backrest frame 402 adjacent to the rear clothes hanger 1, and the rear cover 403 is connected with the backrest frame 402 in a matching manner.

The backrest frame 402 is fixedly provided with a mounting post 4021, the mounting post 4021 is provided with a reinforcing rib, the mounting post 4021 is provided with a threaded hole, the backrest support 2 is provided with a mounting hole 205 corresponding to the threaded hole, the inner side of the mounting hole 205 is provided with a mounting bolt, and the mounting bolt is in threaded connection with the backrest frame 402. The backrest support 2 is fixedly connected with the backrest frame 402 through the mounting bolts, the connection mode is simple, and the mounting process is convenient and fast.

The rear cover 403 is provided with a guide post 4031, the guide post 4031 is fixedly provided with a reinforcing rib, the backrest frame 402 is provided with a matching post 4022, the matching post 4022 is provided with a guide hole corresponding to the guide post 4031, and the diameter of the guide hole is matched with that of the guide post 4031. The guide posts 4031 serve as guides during installation of the rear cover 403 to facilitate the assembly process of the backrest.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A folding backrest, characterized in that: including mounting panel (101), back support (2), back main part (4), mounting panel (101) and back clothes hanger (1) fixed connection, it has bar through-hole (102) to open on mounting panel (101), it has round hole (202) that correspond with bar through-hole (102) to open on back support (2), round hole (202) inboard is equipped with articulated bolt (6), back support (2) rotate with mounting panel (101) through articulated bolt (6) and are connected, be equipped with boss (203) and boss two (204) on back support (2), limiting plate (103) have set firmly on mounting panel (101), limiting plate (103) are spacing to boss (203) or boss two (204) of back support (2), back support (2) are connected with back main part (4) cooperation.

2. A folding backrest as claimed in claim 1, wherein: set firmly two curb plates (201) on back support (2), be equipped with boss one (203) and boss two (204) on curb plate (201), mounting panel (101) quantity is two, limiting plate (103) set firmly between two mounting panels (101), folding back still includes spring (5), spring (5) one end and limiting plate (103) fixed connection, the other end passes through connecting piece (7) and back support (2) cooperation installation.

3. A folding backrest as claimed in claim 2, wherein: the connecting piece (7) is fixedly connected with the backrest support (2), an annular groove is formed in the connecting piece (7), and a mounting ring at one end of the spring (5) is mounted on the outer side of the annular groove.

4. A folding backrest as claimed in claim 2, wherein: the backrest support (2) is fixedly provided with a protection plate (3), and the protection plate (3) tightly pushes against the connecting piece (7).

5. A folding backrest as claimed in claim 1, wherein: the backrest body (4) comprises a backrest frame (402), a cushion (401) and a rear cover (403), the backrest frame (402) is fixedly connected with the backrest support (2), the cushion (401) is fixedly arranged at one end of the backrest frame (402) close to the rear clothes hanger (1), and the rear cover (403) is connected with the backrest frame (402) in a matched mode.

6. A folding backrest as claimed in claim 5, wherein: the backrest frame is characterized in that a mounting column (4021) is fixedly arranged on the backrest frame (402), a reinforcing rib is arranged on the mounting column (4021), a threaded hole is formed in the mounting column (4021), a mounting hole (205) corresponding to the threaded hole is formed in the backrest support (2), a mounting bolt is arranged on the inner side of the mounting hole (205), and the mounting bolt is in threaded connection with the backrest frame (402).

7. A folding backrest as claimed in claim 5, wherein: the backrest is characterized in that a guide column (4031) is arranged on the rear cover (403), reinforcing ribs are fixedly arranged on the guide column (4031), a matching column (4022) is arranged on the backrest frame (402), a guide hole corresponding to the guide column (4031) is formed in the matching column (4022), and the diameter of the guide hole is matched with that of the guide column (4031).