Backrest assembly and two-wheeled electric vehicle

Abstract

The application discloses a backrest assembly and a two-wheeled electric vehicle, and relates to the technical field of electric vehicle accessories. The backrest assembly comprises a backrest bottom plate, a clamping plate and a rear shell, the clamping plate is located between the backrest bottom plate and the rear shell, and is connected with the backrest bottom plate and the rear shell respectively, the edge of the clamping plate is provided with a first stop edge and a second stop edge with a preset included angle, a leather layer is wrapped on the backrest bottom plate, and the first stop edge and the second stop edge are wrapped in the leather layer, and the edge of the rear shell is provided with a first folding edge abutting against the first stop edge. The smoothness of the matching part can be ensured, and the production cost is reduced.

Description

Technical Field

[0001] This application relates to the field of electric vehicle parts technology, and more specifically, to a backrest assembly and a two-wheeled electric vehicle. Background Technology

[0002] Currently, compared to bicycles propelled by human pedaling, two-wheeled electric vehicles are more popular due to their faster speed and easier operation. Therefore, their use is quite common in daily life; almost every household chooses to buy one. Because they are convenient, effortless to ride, and rarely encounter traffic jams, people often choose to use two-wheeled electric vehicles for short trips.

[0003] As a primary mode of transportation for daily commuting, two-wheeled electric vehicles are becoming increasingly diverse in appearance and type. Existing two-wheeled electric vehicles typically allow two people to commute simultaneously. Furthermore, to ensure the safety and a certain level of comfort for the passenger in the back seat, two-wheeled electric vehicles usually have a backrest.

[0004] To improve backrest comfort, a leather-covered backrest pad is usually fitted to the back shell. During the fitting process, the edges of the leather can cause problems such as large gaps, uneven edges, and rough edges. To overcome these issues, some solutions use a self-molding method to install the leather before assembly. However, the self-molding method is costly and does not help reduce production costs. Summary of the Invention

[0005] The purpose of this application is to provide a backrest assembly and a two-wheeled electric vehicle that can ensure a smooth and flat mating surface and reduce production costs.

[0006] The embodiments of this application are implemented as follows:

[0007] In one aspect of this application, a backrest assembly is provided, including a backrest base plate, a clamping plate, and a back shell. The clamping plate is located between the backrest base plate and the back shell and is connected to both the backrest base plate and the back shell. The edge of the clamping plate is provided with a first guard edge and a second guard edge having a preset included angle. The backrest base plate is covered with a leather layer, and the leather layer encloses the first guard edge and the second guard edge within the leather layer. The edge of the back shell is provided with a first folded edge that abuts against the first guard edge.

[0008] Optionally, the backrest base plate includes an abutting surface and a second folded edge disposed at the edge of the abutting surface, the second folded edge abutting against the side of the first stop away from the first folded edge.

[0009] Optionally, the clamp is provided with a plurality of positioning holes, and the rear shell is provided with a buckle corresponding to the positioning holes, the buckle being able to be engaged in the positioning holes.

[0010] Optionally, the rear shell includes a support surface and a connecting surface that are connected to each other, a concave structure is formed between the support surface and the connecting surface, and the concave side faces the clamping plate, and the first folded edge is connected to the connecting surface.

[0011] Optionally, the shape of the backrest base plate includes rectangular, circular, elliptical, or heart-shaped.

[0012] Optionally, the backrest assembly further includes a support frame, and the backrest base plate has a notch, through which the support frame passes and is connected to the clamping plate.

[0013] Optionally, the support frame includes a connecting plate connected to the clamping plate, and a first support plate or a second support plate connected to the connecting plate. The clamping plate is provided with a plurality of mounting holes, and the connecting plate is provided with connecting holes corresponding to the mounting holes, so that the clamping plate and the connecting plate are connected by fasteners. The first support plate and the second support plate are used to connect to the vehicle frame.

[0014] Optionally, the clamping plate is further provided with reinforcing ribs, which are located on at least one side of the clamping plate.

[0015] Optionally, the backrest assembly further includes a sponge layer located between the leather layer and the backrest base.

[0016] This application also provides a two-wheeled electric vehicle, including a backrest assembly as described in any one of the above embodiments.

[0017] The beneficial effects of the embodiments of this application include:

[0018] The backrest assembly provided in this application embodiment connects the backrest bottom plate and the rear shell via a clamp, allowing them to be connected and connected to the body of a two-wheeled electric vehicle. To ensure comfort during use, when the backrest bottom plate is covered with leather, the leather simultaneously covers both the connected backrest bottom plate and the clamp. At this time, the first and second guard edges with preset angles along the edges of the clamp are also covered. When the rear shell mates with the clamp, the first folded edge along the edge of the rear shell abuts against the first guard edge. The leather layer between the first and second guard edges is tensioned by the force of the first folded edge, ensuring a tight fit between the first guard edge and the leather layer, forming a smooth and clean line. This ensures a smooth and flat mating surface and reduces production costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is one of the structural schematic diagrams of the backrest assembly provided in the embodiments of this application;

[0021] Figure 2 This is the second structural schematic diagram of the backrest assembly provided in the embodiments of this application;

[0022] Figure 3 The stress state diagrams of the leather layers at the first and second flanges provided in this application embodiment;

[0023] Figure 4 This is the third structural schematic diagram of the backrest assembly provided in the embodiments of this application;

[0024] Figure 5 The fourth schematic diagram of the backrest assembly provided in the embodiments of this application.

[0025] Icons: 100 - Backrest assembly; 110 - Backrest base plate; 112 - Backrest surface; 114 - Second folded edge; 116 - Notch; 120 - Clamping plate; 122 - First guard edge; 124 - Second guard edge; 126 - Positioning hole; 128 - Mounting hole; 130 - Back cover; 132 - First folded edge; 134 - Buckle; 136 - Support surface; 138 - Connecting surface; 140 - Leather layer; 150 - Support frame; 151 - Connecting plate; 1512 - Connecting hole; 152 - First support plate; 154 - Second support plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Two-wheeled electric vehicles typically have a backrest on the rear seat. To improve backrest comfort, a leather-covered backrest pad is usually fitted to the rear shell. However, during this fitting process, the edges of the leather can cause problems such as large gaps, uneven edges, and rough edges. To overcome these issues, some solutions currently use a self-molding method to install the leather before assembly. However, this self-molding method is costly and does not help reduce production costs. To address these problems, this application provides the following technical solution to overcome them.

[0032] Please refer to Figure 1 and Figure 2 This application provides a backrest assembly 100, including a backrest base plate 110, a clamping plate 120, and a back cover 130. The clamping plate 120 is located between the backrest base plate 110 and the back cover 130, and is connected to both the backrest base plate 110 and the back cover 130. The edge of the clamping plate 120 is provided with a first stop 122 and a second stop 124 having a preset included angle. The backrest base plate 110 is covered with a leather layer 140. Figure 1 and Figure 2 (not shown in the image), and the leather layer 140 wraps the first edge 122 and the second edge 124 inside the leather layer 140, and the edge of the back cover 130 is provided with a first folded edge 132 that abuts against the first edge 122.

[0033] Specifically, when the backrest base plate 110, the clamping plate 120 and the back cover 130 are fitted together, the backrest base plate 110 and the clamping plate 120 can be connected and fixed together first. The connection and fixation can be done by fastener connection, snap-fit ​​or adhesive, as long as a stable connection can be ensured.

[0034] After the backrest base plate 110 and the clamping plate 120 are connected, the backrest base plate 110 and the clamping plate 120 can be considered as a whole. At this time, a leather layer 140 is wrapped around the backrest base plate 110, and a seam is provided on the side of the clamping plate 120 away from the backrest base plate 110 to prevent the leather layer 140 from falling off under force. By providing a first guard edge 122 and a second guard edge 124 with a preset included angle along the edge of the clamping plate 120, the first guard edge 122 and the second guard edge 124 can form a T-shaped structure or an L-shaped structure, so that after the leather layer 140 is installed, the state of the leather layer 140 at the first guard edge 122 and the second guard edge 124 is as follows. Figure 3 As shown in Figure (a). Later, when the clamping plate 120 and the rear shell 130 are fitted together, during the installation process, the first folded edge 132 and the first stop edge 122 of the rear shell 130 abut against each other. At this time, the leather layer 140 at the first stop edge 122 and the second stop edge 124 is subjected to the force of the first folded edge 132, and the leather layer 140 is subjected to... Figure 3 The force indicated by the arrow in Figure (b) creates tension at the first retaining edge 122, ensuring a tight fit between it and the leather layer 140, forming a smooth and clean line. This ensures a tight, even fit during assembly, avoiding large gaps and uneven edges caused by a loose leather layer 140. This method achieves results comparable to self-molding processes while significantly reducing processing costs.

[0035] The backrest assembly 100 provided in this application embodiment connects the backrest base plate 110 and the rear shell 130 via a clamp 120 positioned between them, and can also be connected to the body of a two-wheeled electric vehicle via the clamp 120. To ensure comfort during use, when the leather layer 140 is wrapped around the backrest base plate 110, it simultaneously wraps both the connected backrest base plate 110 and the clamp 120. At this time, the first and second guard edges 122 and 124 with preset angles along the edges of the clamp 120 are also simultaneously wrapped. When the back cover 130 is fitted with the clamping plate 120, the first folded edge 132 and the first stop edge 122 of the back cover 130 abut against each other. The leather layer 140 between the first stop edge 122 and the second stop edge 124 is stretched by the force of the first folded edge 132, so that the first stop edge 122 and the leather layer 140 are tightly attached and form a simple and smooth line. This ensures that the mating area is smooth and flat during the fit and reduces production costs.

[0036] like Figure 2 As shown, the backrest base plate 110 includes an abutment surface 112 and a second folded edge 114 disposed on the edge of the abutment surface 112. The second folded edge 114 abuts against the side of the first stop edge 122 opposite to the first folded edge 132.

[0037] Specifically, the abutment surface 112 is mainly used to support the user's resistance, increasing comfort during riding. To ensure a stable connection between the backrest base plate 110 and the clamp plate 120, a second folded edge 114 is provided along the edge of the abutment surface 112, so that the backrest base plate 110 can better fit with the first stop edge 122 through the second folded edge 114. This is understandable, and alternative methods can also be used. Figure 5 The configuration in the design involves setting an arc-shaped transition surface at the edge of the abutment surface 112 to achieve the same purpose as the second folded edge 114. In actual implementation, this configuration can be flexibly set according to actual needs.

[0038] like Figure 2 As shown, the clamping plate 120 is provided with multiple positioning holes 126, and the rear shell 130 is provided with buckles 134 corresponding to the positioning holes 126. The buckles 134 can be locked in the positioning holes 126.

[0039] With the above configuration, when the clamping plate 120 and the rear shell 130 are engaged, after the rear shell 130 and the clamping plate 120 are in place, the buckle 134 can be engaged in the positioning hole 126, making installation quick and convenient, and preventing it from falling off, which helps improve operational efficiency. The buckle 134 and the positioning hole 126 can be configured in 3, 4, or 5 sets, etc., and this embodiment does not impose specific limitations on this.

[0040] Please continue to refer to this. Figure 2The rear shell 130 includes a support surface 136 and a connecting surface 138 that are connected to each other. A concave structure is formed between the support surface 136 and the connecting surface 138, and the concave side faces the clamping plate 120. The first folded edge 132 is connected to the connecting surface 138.

[0041] Specifically, the support surface 136 can be flat, and the connecting surface 138 can be inclined. When a concave structure is formed between the support surface 136 and the connecting surface 138, the back cover 130 can withstand greater force without deformation when a person leans against the backrest assembly 100, which helps to improve the stability of the backrest assembly 100. At this time, in order to ensure better fit between the back cover 130 and the clamping plate 120, the first folded edge 132 is located at the edge of the connecting surface 138 to ensure the smoothness of the connection.

[0042] It's understandable, and it can be adopted. Figure 5 The structural form in the design features an arc-shaped transition surface along the edge of the support surface 136, achieving the same effect as the connection between the connecting surface 138 and the first folded edge 132. In actual implementation, this can be flexibly configured according to actual needs.

[0043] In an optional embodiment of this application, the shape of the backrest base plate 110 includes a rectangle, a circle, an ellipse, or a heart shape.

[0044] Specifically, when the backrest base plate 110 is rectangular, the corners of the rectangle can be rounded to ensure a smooth transition of the backrest base plate 110 as a whole. Understandably, the shapes of the clamp plate 120 and the back shell 130 need to match the shape of the backrest base plate 110 to ensure a perfect fit between them.

[0045] like Figure 1 and Figure 4 As shown, the backrest assembly 100 also includes a support frame 150. A notch 116 is provided on the backrest base plate 110. The support frame 150 passes through the notch 116 and is connected to the clamp plate 120.

[0046] Specifically, a notch 116 is provided on the backrest base plate 110 so that the support frame 150 can extend into the cavity formed after the backrest base plate 110 and the rear shell 130 are fastened together. This connects the support frame 150 with the clamping plate 120 to support the backrest base plate 110, while also preventing the connection from being exposed to the outside, which helps to ensure the smoothness of the outer ring of the backrest assembly 100 and improves the comfort of use.

[0047] like Figure 4 and Figure 5As shown, the support frame 150 includes a connecting plate 151 connected to the clamping plate 120, and a first support plate 152 or a second support plate 154 connected to the connecting plate 151. The clamping plate 120 is provided with a plurality of mounting holes 128, and the connecting plate 151 is provided with connecting holes 1512 corresponding to the mounting holes 128, so that the clamping plate 120 and the connecting plate 151 are connected by fasteners. The first support plate and the second support plate are used to connect to the vehicle frame.

[0048] Specifically, the first support plate 152 and the second support plate 154 can serve as two connection methods to facilitate connection with the vehicle frame. Furthermore, by providing multiple mounting holes 128 on the clamping plate 120 and connecting holes 1512 corresponding to the mounting holes 128 on the connecting plate 151, fasteners can pass through the mounting holes 128 and connecting holes 1512 sequentially, thus achieving connection between the clamping plate 120 and the connecting plate 151. Understandably, when installing the leather layer 140, the backrest bottom plate 110 needs to be connected to the clamping plate 120 first. To ensure proper fastener installation, the fasteners can be pre-inserted into the mounting holes 128 to facilitate subsequent connection with the first support plate 152.

[0049] In an optional embodiment of this application, the clamping plate 120 is further provided with reinforcing ribs, which are located on at least one side of the clamping plate 120.

[0050] This helps to ensure the structural strength of the clamping plate 120 itself, and it can withstand greater force when connected to the support frame 150. It also prevents the clamping plate 120 from deforming and breaking when the force is transmitted from the backrest base plate 110 to the clamping plate 120, thus improving the stability of the backrest assembly 100.

[0051] In an optional embodiment of this application, the backrest assembly 100 further includes a sponge layer located between the leather layer 140 and the backrest base plate 110.

[0052] Specifically, when setting the sponge layer, the sponge layer and the leather layer 140 can be glued together first and then wrapped around the backrest base plate 110, or the sponge layer can be wrapped around the backrest base plate 110 first and then the leather layer 140 can be wrapped around the sponge layer.

[0053] This application also discloses a two-wheeled electric vehicle, including the backrest assembly 100 from the foregoing embodiments. This two-wheeled electric vehicle has the same structure and beneficial effects as the backrest assembly 100 from the foregoing embodiments. The structure and beneficial effects of the backrest assembly 100 have been described in detail in the foregoing embodiments and will not be repeated here.

[0054] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A backrest assembly, characterized in that, The backrest includes a base plate, a clamping plate, and a back cover. The clamping plate is located between the base plate and the back cover and is connected to both the base plate and the back cover. The clamping plate has a first guard edge and a second guard edge along its edge. The first guard edge and the second guard edge can form a T-shaped structure or an L-shaped structure. The base plate is covered with a leather layer, and the leather layer encloses the first guard edge and the second guard edge within the leather layer. The back cover has a first folded edge along its edge that abuts against the first guard edge. The backrest assembly also includes a sponge layer located between the leather layer and the backrest base.

2. The backrest assembly according to claim 1, characterized in that, The backrest base plate includes a backing surface and a second folded edge disposed at the edge of the backing surface, the second folded edge abutting against the side of the first guard edge opposite to the first folded edge.

3. The backrest assembly according to claim 2, characterized in that, The clamping plate is provided with multiple positioning holes, and the rear shell is provided with buckles corresponding to the positioning holes, which can be engaged in the positioning holes.

4. The backrest assembly according to claim 1, characterized in that, The rear shell includes a support surface and a connecting surface that are connected to each other. A concave structure is formed between the support surface and the connecting surface, and the concave side faces the clamping plate. The first folded edge is connected to the connecting surface.

5. The backrest assembly according to claim 1, characterized in that, The shape of the backrest base plate includes rectangular, circular, oval, or heart-shaped.

6. The backrest assembly according to any one of claims 1-5, characterized in that, The backrest assembly also includes a support frame, and a notch is provided on the backrest base plate. The support frame passes through the notch and is connected to the clamping plate.

7. The backrest assembly according to claim 6, characterized in that, The support frame includes a connecting plate connected to the clamping plate, and a first support plate and a second support plate connected to the connecting plate. The clamping plate is provided with a plurality of mounting holes, and the connecting plate is provided with connecting holes corresponding to the mounting holes, so that the clamping plate and the connecting plate are connected by fasteners. The first support plate and the second support plate are used to connect to the vehicle frame.

8. The backrest assembly according to claim 7, characterized in that, The clamp is also provided with reinforcing ribs, which are located on at least one side of the clamp.

9. A two-wheeled electric vehicle, characterized in that, Includes the backrest assembly as described in any one of claims 1-8.

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