Foldable rear backrest trunk for electric two-wheeled bicycle

Abstract

The present invention discloses a foldable rear backrest trunk for an electric two-wheeled bicycle, and relates to a rear backrest trunk. The structure of the present invention is: a connecting plate is provided between the rear seat frame and the rear seat cushion, a fixed concave plate of a folding lock is connected to the tail of the connecting plate, and the movable concave plate of the folding lock is connected to the rear backrest trunk; when the folding lock is opened, the rear backrest trunk is in a vertical state; when the folding lock is closed, the rear backrest trunk is in a horizontal state. The present invention has the following advantages and positive effects: ① The structure is compact, only one folding lock is added, the manufacturing is simple, and the total length of the traditional vehicle after the rear seat and the trunk are installed is reduced; ② It is practical and safe; ③ It has a wide range of uses. If the trunk is changed into a large cart basket, a large cart basket or a courier box or other containers, it is suitable for object transportation, take-out and express delivery, and has a wide range of application prospects.

Description

Technical Field

[0001] The invention relates to a rear backrest trunk, in particular to a foldable rear backrest trunk for an electric two-wheeled bicycle. Background Art

[0002] Electric two-wheeled bicycles are a means of transportation that uses electricity as energy and is driven by an electric motor. They are environmentally friendly, energy-saving, and have low operating costs. They are becoming an important means of transportation for the general public. Currently, more and more people are using electric two-wheeled bicycles to pick up and drop off children at school.

[0003] However, one prominent problem is that, in view of traffic pressure, there are many restrictions on the length of such electric two-wheeled bicycles, which are generally equipped with a rear seat cushion but no trunk, or with a trunk but no rear seat cushion. If a rear seat cushion and a trunk are arranged behind the driver in sequence, the body of the bicycle will be lengthened, which cannot meet the requirements of traffic management, and it is also inconvenient to enter and exit narrow spaces such as public carports.

[0004] The rear seat cushion is set up to facilitate carrying children, and the trunk is set up to facilitate carrying raincoats, helmets, car locks and other necessities. Therefore, it is necessary to set up both the rear seat cushion and the trunk, but it is not allowed to lengthen the body of the car. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a foldable rear backrest trunk for an electric two-wheeled bicycle.

[0006] The object of the present invention is achieved in that:

[0007] 1. The rear seat cushion, rear backrest and trunk are arranged at the same time without lengthening the vehicle body; instead of connecting them one by one on a horizontal plane, they are placed vertically from bottom to top;

[0008] 2. When you need to carry a child, rotate the backrest and trunk 90 degrees clockwise to free up the back seat cushion for the child to use. The backrest can protect the child.

[0009] 3. A folding locker is provided to connect the bracket, the backrest and the trunk respectively, so that the backrest and the trunk can be converted into two states: lying flat or vertical;

[0010] 4. The folding lock is a hinge structure and is locked in a vertical state to ensure safety.

[0011] Specifically, the present invention comprises a rear seat clothes rack and a rear seat cushion of an electric two-wheeled bicycle; a bracket, a folding locker, a rear backrest and a tail box are provided;

[0012] Its location and connection relationship are:

[0013] A bracket is provided between the rear seat hanger and the rear seat cushion, a fixed concave plate of a folding lock is connected to the rear end of the bracket, and a movable concave plate of the folding lock is connected to the rear backrest and the trunk respectively;

[0014] When the folding lock is closed, the rear backrest and trunk are horizontal;

[0015] When the folding lock is open, the rear backrest and trunk are in a vertical position;

[0016] The folding lock includes a first folding lock or a second folding lock.

[0017] The present invention has the following advantages and positive effects:

[0018] ① Compact structure: Only one folding lock is added, which is simple to manufacture and reduces the total length of the traditional vehicle after the rear seat cushion, rear backrest and trunk are installed.

[0019] ② Practical and safe: When there are no passengers, the rear backrest and trunk can be stacked directly on top of the rear seat cushion, more objects can be placed in the trunk, and when the vehicle enters and exits a narrow space such as a parking shed, the total length of the vehicle is shortened, making it easier to enter and exit, and more convenient to use; when passengers need to be carried, the folded rear backrest and trunk can be opened, so that passengers can be carried normally on the rear seat cushion, and the rear backrest and trunk are immediately locked and close to the back of the person, ensuring the safety of the person.

[0020] ③ Wide range of uses: If the trunk is changed into a large cart basket, a large cart basket or an express box and other containers, it is suitable for object transportation, take-out and express delivery, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention (closed);

[0022] Figure 2 It is a schematic diagram of the structure of the present invention (open);

[0023] Figure 3 is an exploded view of the first folding lock 4A;

[0024] Figure 4 is a schematic diagram of the structure of the first folding locker 4A (open);

[0025] Figure 5 is a schematic diagram of the structure of the first folding locker 4A (closed);

[0026] Figure 6 is an exploded view of the second folding lock 4B;

[0027] Figure 7 is a schematic diagram of the structure of the second folding locker 4B (open);

[0028] Figure 8 It is a schematic diagram of the structure of the second folding locker 4B (closed).

[0029] In the figure:

[0030] 00—electric two-wheeled bicycle;

[0031] 10—Back seat hanger;

[0032] 20—rear seat cushion;

[0033] 30—Stand;

[0034] 40—folding lock, 4A—first folding lock, 4B—second folding lock;

[0035] 41 - fixed concave plate,

[0036] 411—Fixed concave plate left round hole,

[0037] 412—Right round hole of fixed concave plate,

[0038] 413—Fixed concave plate locking arc hole;

[0039] 42 - movable concave plate,

[0040] 421—left circular hole of movable concave plate,

[0041] 422—Right circular hole of movable concave plate,

[0042] 423—Active concave plate locking circular hole;

[0043] 43 - Locking device,

[0044] 431—Lock button,

[0045] 4311—Circular Plate

[0046] 4312—Round rod,

[0047] 4313—cylinder,

[0048] 432 - locking rod,

[0049] 433 - locking spring,

[0050] 434—locking spring;

[0051] 44—tension spring;

[0052] 45 - latch,

[0053] 451—Latch pull ring,

[0054] 452—Latch lever,

[0055] 453 - latch spring,

[0056] 454—latch cylinder;

[0057] 50—backrest;

[0058] 60—Trunk. DETAILED DESCRIPTION

[0059] The following is a detailed description with reference to the accompanying drawings and embodiments.

[0060] 1. Structure

[0061] 1. Overall

[0062] like Figure 1 , 2 The present invention includes a rear seat hanger 10 and a rear seat cushion 20 of an electric two-wheeled bicycle 00; a bracket 30, a folding locker 40, a rear backrest 50 and a trunk 60;

[0063] Its location and connection relationship are:

[0064] A bracket 30 is provided between the rear seat hanger 10 and the rear seat cushion 20, a fixed concave plate 41 of a folding locker 40 is connected to the rear end of the bracket 30, and a movable concave plate 42 of the folding locker 40 is connected to the rear backrest 50 and the trunk 60 respectively;

[0065] When the folding lock 40 is closed, the rear backrest 50 and the trunk 60 are in a horizontal state;

[0066] When the folding lock 40 is opened, the rear backrest 50 and the trunk 60 are in a vertical state;

[0067] The folding lock 40 includes a first folding lock 4A or a second folding lock 4B.

[0068] 2. Functional components

[0069] 1) Rear seat hanger 10

[0070] like Figure 1 , 2 The rear seat hanger 10 is a horizontal long board at the rear of the electric two-wheeled bicycle 00, which is a support body of the rear seat cushion 20. A reserved hole is provided on it, and the rear seat cushion 20 and other objects are connected by screws and nuts.

[0071] 2) Rear seat cushion 20

[0072] like Figure 1 , 2 The rear seat cushion 20 is a horizontal long cushion for carrying children.

[0073] 3) Bracket 30

[0074] like Figure 1 , 2 The bracket 30 is a horizontal long plate, which is connected to the rear seat bracket 10 through screws and nuts, and the rear end of the bracket is connected to a fixed concave plate 41 of a folding locker 40.

[0075] 4-1) First folding lock 4A

[0076] like Figure 3 , 4 5. The first folding locker 4A includes a fixed concave plate 41, a movable concave plate 42 and a locker 43;

[0077] The fixed concave plate 41 is a concave metal plate, with a fixed concave plate left circular hole 411 and a fixed concave plate locking arc hole 413 provided on the left side, and a fixed concave plate right circular hole 412 provided on the right side;

[0078] The movable concave plate 42 is a concave-shaped metal plate, with a movable concave plate left circular hole 421 and a movable concave plate locking circular hole 423 provided on the left side, and a movable concave plate right circular hole 422 provided on the right side;

[0079] Its location and connection relationship are:

[0080] On the vertically placed fixed concave plate 41, the movable concave plate 42 is connected by screws and mutually adapted round holes to form a hinge-type integral body that is mutually perpendicular or in a vertical straight line;

[0081] The locker 43 is inserted into the fixed concave locking arc hole 413 and the movable concave locking circular hole 423 to lock the vertical position of the fixed concave 41 and the movable concave 42. At this time, the rear backrest 50 and the rear seat cushion 20 are in a right-angled vertical state.

[0082] like Figure 3 The locker 43 includes a locking button 431, a locking rod 432, a locking spring 433 and a locking clip 434;

[0083] The locking button 431 includes a circular plate 4311, a circular rod 4312 and a cylinder 4313 which are connected in sequence;

[0084] The locking button 431 and the locking rod 432 are connected up and down, the locking spring 433 is sleeved on the locking rod 432, and the locking clamping spring 434 is embedded in the cylinder 4313;

[0085] The fixing concave locking arc hole 413 is a long arc hole, the inner diameter of which is adapted to the round rod 4312 , and the large round hole at the upper end is adapted to the cylinder 4313 .

[0086] Working mechanism of the first folding lock 4A:

[0087] When the movable concave plate 42 and the fixed concave plate 41 form a vertical straight line, under the action of the locking spring 433, the cylinder 4313 of the locking button 431 of the locker 43 is inserted into the large circular hole at the upper end of the locking arc hole 413 of the fixed concave plate, so that the movable concave plate 42 and the fixed concave plate 41 form a vertical straight line and are locked, even if the rear backrest 50 and the trunk 60 are in a vertical state, the rear seat cushion 20 is vacant at this time, and children can be carried.

[0088] When the rear backrest 50 and the trunk 60 need to be laid flat, the circular plate 4311 of the locking button 431 is pressed by hand to make the cylinder 4313 of the locking button 431 leave the large circular hole of the recessed plate locking arc hole 413, and then the round rod 4312 of the locking button 431 is moved counterclockwise to the left along the recessed plate locking arc hole 413 to make the movable recessed plate 42, and the rear backrest 50 and the trunk 60 also be horizontal.

[0089] It can be seen that the folding lock 40 is a key component of the independent innovation of the present invention, which not only enables the rear backrest 50 and the trunk 60 to be converted into the open and closed states, but also is fast and safe.

[0090] 4-2) Second folding lock 4B

[0091] like Figure 6 , 7 8. The second folding locker 4B includes a fixed concave plate 41, a movable concave plate 42, a tension spring 44 and a latch 45; the fixed concave plate 41 and the movable concave plate 42 of the second folding locker 4B have the same structure as the fixed concave plate 41 and the movable concave plate 42 of the first folding locker 4A, but are respectively provided with a fixed concave plate locking circular hole 414 and a movable concave plate locking circular hole 424 corresponding to the position when the movable concave plate 42 is vertical;

[0092] Its location and connection relationship are:

[0093] On the vertically placed fixed concave plate 41, the movable concave plate 42 is connected by screws and mutually adapted round holes to form a hinge-type whole that is perpendicular to each other or in a vertical straight line, and is tightened by two tension springs 44 to make it elastic and shockproof;

[0094] A latch 45 is connected to the fixed concave plate locking hole 414. When the fixed concave plate 41 and the movable concave plate 42 are in a vertical straight line state, the latch 45 is inserted into the fixed concave plate locking circular hole 414 and the movable concave plate locking circular hole 424 to lock them.

[0095] The latch 45 includes a latch pull ring 451, a latch pull rod 452, a latch spring 453 and a latch cylinder 454;

[0096] The pull ring 451 is a circular elastic ring with only 1.5-1.9 circles, which is used for fingers to insert and pull;

[0097] The latch pull rod 452 is a short metal rod, and a through hole is provided at the top of the latch pull rod 452 for the latch pull ring 451 to be looped into; the latch pull rod 452 has a convex ring in the middle for the latch spring 453 to be positioned;

[0098] The latch spring 453 locks the latch pull rod 452;

[0099] The latch cylinder 454 is a short cylinder with a small round hole on its top surface to allow the upper part of the latch pull rod 452 to enter and exit.

[0100] The working mechanism of latch 45 is:

[0101] The latch spring 453 is sleeved on the upper part of the latch pull rod 452, and the latch pull rod 452 is inserted into the latch tube 454 from bottom to top, and then the latch pull ring 451 is inserted into the through hole at the top of the latch pull rod 452 to form a prestressed whole; under the action of the latch spring 453, the latch pull rod 452 extends out of the latch tube 454, and if a finger is inserted into the latch pull ring 451 and pulled hard, the latch pull rod 452 is retracted.

[0102] 5) Backrest 50

[0103] The backrest 50 is a universal component, which protects children when it is opened.

[0104] 6) Tail box 60

[0105] The tail box 60 is a universal part, which can be switched between the open and closed states by operating the folding lock 40. When closed, the length of the vehicle is shortened, which is not only convenient for the operation of the electric vehicle but also convenient for entering and exiting narrow spaces such as public carports.

[0106] 2. Usage

[0107] This method includes the following steps:

[0108] ① When traveling without children, the movable concave plate 42 of the folding lock 40 is in a flat state, that is, the lock 43 is not locked, so that the rear backrest 50 and the trunk 60 are also in a flat state, at this time the length of the vehicle is shortened, and driving is convenient and fast;

[0109] ② When entering or exiting the carport, the same as step ① is followed to make the rear backrest 50 and the trunk 60 lie flat, shortening the length of the vehicle and making it easier to enter or exit.

[0110] ③ When carrying a child, the backrest 50 and the trunk 60 are rotated 90 degrees clockwise by hand to a vertical state. At this time, the locker 43 is locked, and the rear seat cushion 20 is vacated, allowing the child to sit well and be protected by the backrest 50, which is safe.

[0111] ④ The trunk 60 can be convenient for carrying raincoats, helmets, locks and other necessities on the vehicle, so it is necessary to set the trunk at the same time, and it is not allowed if the vehicle body is not lengthened.

Claims

1. A foldable rear backrest trunk for an electric two-wheeled bicycle, characterized in that: It comprises a rear seat clothes hanger (10) and a rear seat cushion (20) of an electric two-wheeled bicycle (00); A bracket (30), a folding lock (40), a rear backrest (50) and a trunk (60) are provided; Its location and connection relationship are: A bracket (30) is provided between the rear seat hanger (10) and the rear seat cushion (20); a fixed concave plate (41) of a folding lock (40) is connected to the rear end of the bracket (30); and a movable concave plate (42) of the folding lock (40) is connected to the rear backrest (50) and the trunk (60) respectively; When the folding lock (40) is closed, the rear backrest (50) and the trunk (60) are in a horizontal state; When the folding lock (40) is opened, the rear backrest (50) and the trunk (60) are in a vertical state; The folding lock (40) comprises a first folding lock (4A) or a second folding lock (4B); The first folding locker (4A) comprises a fixed concave plate (41), a movable concave plate (42) and a locker (43); The fixed concave plate (41) is a concave-shaped metal plate, with a fixed concave plate left circular hole (411) and a fixed concave plate locking arc hole (413) provided on the left side, and a fixed concave plate right circular hole (412) provided on the right side; The movable concave plate (42) is a concave-shaped metal plate, with a movable concave plate left circular hole (421) and a movable concave plate locking circular hole (423) provided on the left side, and a movable concave plate right circular hole (422) provided on the right side; Its location and connection relationship are: On the vertically placed fixed concave plate (41), the movable concave plate (42) is connected by screws and mutually adapted circular holes to form a mutually perpendicular or vertical hinge-type whole; The locker (43) is inserted into the fixed concave plate locking arc hole (413) and the movable concave plate locking circular hole (423) to lock the fixed concave plate (41) and the movable concave plate (42) in a vertical position, and the rear backrest (50) and the rear seat cushion (20) are in a right-angled vertical position; The locker (43) comprises a locking button (431), a locking rod (432), a locking spring (433) and a locking clip (434); The locking button (431) comprises a circular plate (4311), a round rod (4312) and a cylinder (4313) which are connected in sequence; The locking button (431) and the locking rod (432) are connected up and down, the locking spring (433) is sleeved on the locking rod (432), and the locking clamping ring (434) is embedded in the cylinder (4313); The fixed concave plate locking arc hole (413) is a long arc hole, the inner diameter of which is adapted to the round rod (4312), and the large round hole at the upper end thereof is adapted to the cylinder (4313); The second folding locker (4B) comprises a fixed concave plate (41), a movable concave plate (42), a tension spring (44) and a latch (45); the fixed concave plate (41) and the movable concave plate (42) of the second folding locker (4B) have the same structure as the fixed concave plate (41) and the movable concave plate (42) of the first folding locker (4A), but are respectively provided with a fixed concave plate locking circular hole (414) and a movable concave plate locking circular hole (424) which correspond to the positions when the movable concave plate (42) is vertical; Its location and connection relationship are: On the vertically placed fixed concave plate (41), the movable concave plate (42) is connected by screws and mutually adapted circular holes to form a mutually perpendicular or vertical hinge-type whole; The fixed concave plate (41) and the fixed concave plate (41) are further tightened by two tension springs (44) to provide elastic shockproof properties; A latch (45) is connected to the fixed concave plate locking circular hole (414), and when the fixed concave plate (41) and the movable concave plate (42) are in a vertical straight line state, the latch (45) is inserted into the fixed concave plate locking circular hole (414) and the movable concave plate locking circular hole (424) to lock them; The latch (45) comprises a latch pull ring (451), a latch pull rod (452), a latch spring (453) and a latch cylinder (454); The pull ring (451) is a circular elastic ring with only 1.5-1.9 circles, which is used for fingers to insert and pull; The latch pull rod (452) is a short metal rod. A through hole is provided at the top of the latch pull rod (452) for the latch pull ring (451) to be looped in. The latch pull rod (452) has a convex ring in the middle for positioning the latch spring (453). The latch spring (453) locks the latch pull rod (452); The latch cylinder (454) is a short cylinder with a small round hole on its top surface for the upper part of the latch pull rod (452) to enter and exit.

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