CN215752758U

CN215752758U - Folding backrest of electric bicycle

Info

Publication number: CN215752758U
Application number: CN202121672378.8U
Authority: CN
Inventors: 常杰; 安祁峰; 李万全; 苏前旭
Original assignee: Tianjin Shenling Technology Development Co ltd
Current assignee: Tianjin Shenling Technology Development Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-02-08
Anticipated expiration: 2031-07-21

Abstract

The utility model provides a folding backrest of an electric bicycle, which comprises a backrest support, a backrest, a connecting plate and a folding assembly, wherein the backrest support is hinged with the connecting plate through the folding assembly, a first arc-shaped hinge hole is formed in the connecting plate, the connecting plate is fixedly connected with a rear clothes hanger, the folding assembly comprises a limiting block, a top block and a hinge rod, and a first limiting boss and a second limiting boss which correspond to the top block are arranged on the limiting block; the hinge rod is installed at the inner sides of the circular through hole and the first arc-shaped hinge hole, the ejector block is fixedly connected with the backrest support, and the limiting block is fixedly connected with the backrest support. The utility model has the beneficial effects that: the backrest support is hinged with the connecting plate through the folding assembly, the use space of the rear clothes rack can be increased when the backrest is in a horizontal state, and the length of the vehicle body cannot be influenced when the backrest is in a vertical state.

Description

Folding backrest of electric bicycle

Technical Field

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

Background

Generally, the backrest is fixedly arranged on the rear clothes rack in the design of the conventional electric vehicle, so that the use space of the rear clothes rack is limited, and if the rear seat is arranged behind the rear clothes rack, the length of a vehicle body of the electric bicycle is increased to influence the trafficability of the electric bicycle, so that the backrest capable of being folded is required to be designed.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a foldable backrest of an electric bicycle, so as to solve the problem of limited usage space of the conventional rear clothes rack.

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

a folding backrest of an electric bicycle comprises a backrest support, a backrest, a connecting plate and a folding assembly, wherein the backrest support is hinged to the connecting plate through the folding assembly, a first arc-shaped hinge hole is formed in the connecting plate, the connecting plate is fixedly connected with a rear clothes hanger, side plates are fixedly arranged on two sides of the backrest support, circular through holes corresponding to the first arc-shaped hinge hole are formed in the side plates, the folding assembly comprises a limiting block, a top block and a hinge rod, and a first limiting boss and a second limiting boss corresponding to the top block are arranged on the limiting block; the hinge rod is installed at the inner sides of the circular through hole and the first arc-shaped hinge hole, the ejector block is fixedly connected with the backrest support, and the limiting block is fixedly connected with the backrest support.

Furthermore, a second arc-shaped hinge hole corresponding to the first arc-shaped hinge hole is formed in the limiting block.

Furthermore, the lower end face of the ejector block is an arc-shaped face, and the right side face of the first limiting boss is an arc-shaped face corresponding to the lower end face of the ejector block.

Further, be equipped with the spring mounting hole in the stopper, spring mounting hole from interior to exterior installs compression spring, spacing pearl in proper order, spacing pearl diameter is greater than the compression spring diameter, it has two spacing holes of location to open on the curb plate of back support, and every spacing hole is corresponding with the position of spacing pearl when the back is in vertical state and horizontal state respectively, spacing hole diameter is less than spacing pearl diameter.

Further, the hinge rod comprises a screw rod and a stopping nut, the screw rod is installed on the inner sides of the first arc-shaped hinge hole, the second arc-shaped hinge hole and the circular through hole, and the stopping nut is arranged on the outer side of one end, far away from the nut, of the screw rod.

Furthermore, the limiting block and the top block are PA structural members.

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

(1) according to the folding backrest of the electric bicycle, the backrest support is hinged with the connecting plate through the folding assembly, the hinge rod rotates in different positions in the first arc-shaped hinge hole, the backrest can be arranged in a vertical state or in a horizontal state, the limiting block has a limiting effect on the backrest support, the structural stability is improved, the use space of the rear clothes rack can be increased when the backrest is in the horizontal state, and the folding backrest of the electric bicycle can be used as the backrest in the vertical state without influencing the length of a bicycle body.

(2) According to the folding backrest of the electric bicycle, the compression spring and the limiting beads are arranged in the limiting block, the limiting beads limit the backrest support, and the stability of the structure is further guaranteed.

(3) According to the folding backrest of the electric bicycle, the limiting block and the mounting block are both made of PA materials, and the PA materials have the following advantages: firstly, the wear resistance is good, and the service life of parts is prolonged; secondly, the processing process is simple, the production efficiency is improved, and the production cost is reduced; thirdly, the machining precision is high, and the efficiency in the assembling process is improved; fourth, the PA material structure is lighter in weight compared to the metal structure, reducing the load of the electric vehicle.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit 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 side view of a backrest according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an exploded structure of a backrest according to an embodiment of the present invention;

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

FIG. 5 is a schematic structural diagram of a top block according to an embodiment of the present invention;

FIG. 6 is a schematic view of a backrest frame according to an embodiment of the present invention

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

FIG. 8 is a cross-sectional view of a backrest in a horizontal state according to an embodiment of the present invention;

fig. 9 is a schematic sectional view of a limiting block according to an embodiment of the present invention.

Description of reference numerals:

1-connecting plate; 2, a limiting block; 3-a top block; 4-a backrest support; 5-a backrest; 6-hinged lever; 7-rear clothes rack; 8-compression spring; 9-side plate; 10-a spacing bead; 101-a first arcuate hinge aperture; 201-a second arcuate hinge aperture; 202-spring mounting holes; 203-a second limit boss; 204-a first limit boss; 601-screw rod; 602-retaining nut; 901-circular through holes; 902-limiting hole.

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 embodiments with reference to the attached drawings.

As shown in fig. 1 to 8, the folding backrest of the electric bicycle comprises a backrest support 4, a backrest 5, two connecting plates 1 and a folding assembly, wherein the backrest support 4 is hinged to the connecting plates 1 through the folding assembly, the number of the connecting plates 1 is two, the two connecting plates 1 are provided with first arc-shaped hinge holes 101, the connecting plates 1 are fixedly connected with a rear clothes hanger 7, side plates 9 are fixedly arranged on two sides of the backrest support 4, circular through holes 901 corresponding to the first arc-shaped hinge holes 101 are formed in the side plates 9, the folding assembly comprises a limiting block 2, a top block 3 and a hinge rod 6, and a first limiting boss 204 and a second limiting boss 203 corresponding to the top block 3 are arranged on the limiting block 2; the hinge rod 6 is arranged on the inner side of the circular through hole 901 and the first arc-shaped hinge hole 101, the ejector block 3 is fixedly connected with the backrest support 4, and the limiting block 2 is fixedly connected with the backrest support 4. A second arc-shaped hinge hole 201 corresponding to the first arc-shaped hinge hole 101 is arranged in the limiting block 2. Be equipped with second arc hinge hole 201 in the stopper 2 and increased hinge structure's intensity, make hinge structure more stable. The terminal surface is the arcwall face under the kicking block 3, and first spacing boss 204 right flank is the arcwall face that corresponds with the terminal surface under the kicking block 3. When the backrest is in a vertical state, the hinge rod 6 is positioned in the lower space of the first arc-shaped hinge hole 101, and at the moment, the first limiting boss 204 has a limiting effect on the top block 3; when the backrest 5 needs to be adjusted to be in a horizontal state, the backrest support 4 only needs to be moved upwards to enable the hinge rod 6 to be located in the upper space of the first arc-shaped hinge hole 101, the backrest support 4 is rotated backwards, and at the moment, the second limiting boss 203 plays a limiting role in limiting the jacking block 3. In addition, the right side face of the first limiting boss 204 is an arc-shaped face corresponding to the lower end face of the top block 3, so that the guide effect is achieved in the rotating process, the position of the hinge rod 6 cannot be changed in the rotating process, and the adjusting process of the backrest 5 is more stable. Backrest 5 is articulated through connecting plate 1 of backrest support 4 with back clothes hanger 7, and articulated rod 6 is in the downthehole different positions of arc articulated, can realize 5 perpendicular or the switching of horizontality of backrest, and stopper 2 has played spacing effect to backrest support 4, makes increased structural stability, and backrest 5 is folded the usage space that can increase back clothes hanger 7 to the rear, uses as the backrest when being in the vertical state, and can not influence the length of automobile body.

As shown in fig. 4, 6 and 9, a spring mounting hole 202 is arranged in the limiting block 2, a compression spring 8 and a limiting bead 10 are sequentially mounted in the spring mounting hole 202 from inside to outside, the diameter of the limiting bead 10 is larger than that of the compression spring 8, two positioning limiting holes 902 are formed in the side plate 9 of the backrest support 4, each limiting hole 902 corresponds to the position of the limiting bead 10 when the backrest is in the vertical and horizontal positions, and the diameter of each limiting hole 902 is smaller than that of the limiting bead 10. When backrest position is adjusted to needs, rotate backrest support 4, spacing pearl 10 removes to compression spring 8 one side, and compression spring 8 takes place to compress, and after backrest support 4 reachd the assigned position, in compression spring 8's spacing post of effect got into spacing hole 902, spacing pearl 10 had played limiting displacement to backrest support 4, had further guaranteed the stability of structure.

The hinge rod 6 comprises a screw 601 and a retaining nut 602, the screw 601 is mounted inside the first arc-shaped hinge hole 101, the second arc-shaped hinge hole 201 and the circular through hole 901, and the retaining nut 602 is arranged outside one end, far away from the nut, of the screw 601. The hinge structure is simple, the installation is convenient, and the retaining nut 602 can prevent the screw 601 from falling off in the running process of the electric bicycle.

Stopper 2 and kicking block 3 are PA material structure, still install metal insert in its manufacturing engineering, and it has the internal thread to open in the metal insert, use the bolt to twist when stopper 2 and kicking block 3 and other part fixed connection can, the structure that uses the PA material has following advantage: firstly, the wear resistance is good, and the service life of parts is prolonged; secondly, the processing process is simple, the production efficiency is improved, and the production cost is reduced; thirdly, the machining precision is high, and the efficiency in the assembling process is improved; fourth, the PA material structure is lighter in weight compared to the metal structure, reducing the load of the electric vehicle.

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. The utility model provides an electric bicycle folding back which characterized in that: the folding backrest comprises a backrest support (4), a backrest (5), a connecting plate (1) and a folding assembly, wherein the backrest support (4) is hinged to the connecting plate (1) through the folding assembly, a first arc-shaped hinge hole (101) is formed in the connecting plate (1), the connecting plate (1) is fixedly connected with a rear clothes hanger (7), side plates (8) are fixedly arranged on two sides of the backrest support (4), circular through holes (901) corresponding to the first arc-shaped hinge holes (101) are formed in the side plates (8), the folding assembly comprises a limiting block (2), a top block (3) and a hinge rod (6), and a first limiting boss (204) and a second limiting boss (203) corresponding to the top block (3) are arranged on the limiting block (2);

the hinge rod (6) is arranged on the inner sides of the circular through hole (901) and the first arc-shaped hinge hole (101), the top block (3) is fixedly connected with the backrest support (4), and the limiting block (2) is fixedly connected with the backrest support (4).

2. The folding backrest of electric bicycle as claimed in claim 1, wherein: and a second arc-shaped hinge hole (201) corresponding to the first arc-shaped hinge hole (101) is formed in the limiting block (2).

3. The folding backrest of electric bicycle as claimed in claim 1, wherein: the lower end face of the top block (3) is an arc-shaped face, and the right side face of the first limiting boss (204) is an arc-shaped face corresponding to the lower end face of the top block (3).

4. The folding backrest of electric bicycle as claimed in claim 1, wherein: be equipped with spring mounting hole (202) in stopper (2), spring mounting hole (202) from interior to exterior installs compression spring (9), spacing pearl (10) in proper order, spacing pearl (10) diameter is greater than compression spring (9) diameter, it has two spacing holes of location (902) to open on curb plate (8) of back support (4), and every spacing hole (902) are corresponding with the position of spacing pearl (10) when the back is in vertical state and horizontal state respectively, spacing hole (902) diameter is less than spacing pearl (10) diameter.

5. The folding backrest of electric bicycle as claimed in claim 1, wherein: articulated arm (6) include screw rod (601), stopping nut (602), install in the inboard of first arc hinge hole (101), second arc hinge hole (201) and circular through-hole (901) screw rod (601), the one end outside that the nut was kept away from in screw rod (601) is equipped with stopping nut (602).

6. The folding backrest of electric bicycle as claimed in claim 1, wherein: the limiting block (2) and the top block (3) are both PA structural members.