Rear fender, combination mechanism and electric vehicle

Abstract

This utility model provides a rear mudguard, a combined mechanism, and an electric vehicle, relating to the field of electric vehicle technology. The rear mudguard has a positioning part, with the positioning part and two mounting holes spaced apart and corresponding to a mounting bracket. When one mounting hole is bolted to the mounting bracket and the positioning part is engaged with the mounting bracket, the positioning part prevents the rear mudguard from rotating around the bolt. When installing the rear mudguard, the bolt in any mounting hole can be tightened first. The positioning part effectively prevents the rear mudguard from deflecting around the tightened bolt, thus preventing misalignment of the remaining mounting holes. This eliminates the need for disassembly and rework, improving the installation efficiency of the rear mudguard.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle technology, and in particular to a rear mudguard, a combination mechanism, and an electric vehicle. Background Technology

[0002] like Figure 1 and Figure 2 As shown, in the prior art, the rear fender 100 of a two-wheeled electric vehicle is fixed to the mounting bracket 300 by multiple sets of bolts 200. Specifically, the bolts 200 are arranged front and rear, and the rear fender 100 can have multiple bolt mounting points along a symmetrical left-right direction. During actual assembly, it was found that when a single bolt 200 is tightened, the resulting torque causes the rear fender 100 to rotate around that bolt as its axis, leading to positional displacement of other mounting holes 101. This displacement directly affects the normal assembly of the remaining bolts 200, requiring disassembly and rework. This problem increases the number of steps, thereby reducing assembly efficiency and increasing the overall assembly time. Utility Model Content

[0003] The purpose of this utility model is to provide a rear mudguard, a combination mechanism, and an electric vehicle to alleviate the technical problem that the rear mudguard is prone to displacement when it is bolted in the prior art.

[0004] In the first aspect, the rear mudguard provided by this utility model has at least two mounting holes, the rear mudguard is provided with a positioning part, the positioning part and the plurality of mounting holes are spaced apart and respectively correspond to the mounting bracket;

[0005] With the mounting bracket connected to one of the mounting holes by bolts and the positioning part engaged with the mounting bracket, the positioning part is used to prevent the rear fender from rotating around the bolts.

[0006] In conjunction with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the positioning part includes a positioning post adapted to the mounting bracket.

[0007] In conjunction with the first possible implementation of the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the positioning post is configured as a hollow structure.

[0008] In conjunction with the first aspect, this utility model provides a third possible implementation of the first aspect, wherein the positioning part includes a positioning hole adapted to the mounting bracket.

[0009] In conjunction with the first aspect, this utility model provides a fourth possible implementation of the first aspect, wherein the rear mudguard is provided with a base portion, and the positioning portion is disposed on the base portion;

[0010] With the positioning part engaged with the mounting bracket, the base part abuts against the surface of the mounting bracket.

[0011] In conjunction with the fourth possible implementation of the first aspect, this utility model provides a fifth possible implementation of the first aspect, wherein the base portion is hollow inside, and the wall thickness of the base portion near the positioning portion is greater than the wall thickness of the end away from the positioning portion.

[0012] In conjunction with the fourth possible implementation of the first aspect, the present invention provides a sixth possible implementation of the first aspect, wherein at least one of the mounting holes is provided on the base portion.

[0013] Secondly, the rear mudguard assembly mechanism provided by this utility model includes the rear mudguard and mounting bracket described in the first aspect;

[0014] The positioning part in the rear mudguard is fitted with the mounting bracket, and at least two mounting holes in the rear mudguard are respectively connected to the mounting bracket by bolts.

[0015] In conjunction with the second aspect, the mounting bracket includes a rear horizontal fork, which has holes corresponding to the mounting holes and mating parts adapted to the positioning part;

[0016] Alternatively, the mounting bracket may include a rear swingarm and a bracket connecting the rear swingarm, with at least one of the mounting hole and the positioning portion corresponding to the bracket.

[0017] Thirdly, the electric vehicle provided by this utility model is equipped with the rear mudguard described in the first aspect, or the electric vehicle has a rear mudguard assembly mechanism described in the second aspect.

[0018] The present invention provides the following advantages: a rear mudguard with a positioning part is used, and the positioning part and two mounting holes are spaced apart and correspond to the mounting bracket respectively. When the mounting bracket is connected to one mounting hole by a bolt and the positioning part is engaged with the mounting bracket, the positioning part can prevent the rear mudguard from rotating around the bolt. When installing the rear mudguard, the bolt in any mounting hole can be tightened first. Under the action of the positioning part, the rear mudguard can be effectively prevented from deflecting around the tightened bolt, thereby preventing the remaining mounting holes from shifting. No disassembly and rework are required, which improves the installation efficiency of the rear mudguard.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a rear fender assembly mechanism in the prior art;

[0022] Figure 2 An exploded view of the rear fender assembly mechanism in the prior art;

[0023] Figure 3 A schematic diagram of the rear mudguard assembly mechanism provided in an embodiment of this utility model;

[0024] Figure 4 for Figure 3 Sectional view at point AA;

[0025] Figure 5 A front view of another rear mudguard assembly mechanism provided in an embodiment of this utility model;

[0026] Figure 6 A front view of the positioning part and the base part of the rear fender provided in an embodiment of this utility model;

[0027] Figure 7 for Figure 6 Sectional view at point BB;

[0028] Figure 8 A top view of the positioning part and the base part of the rear fender provided in an embodiment of the present utility model;

[0029] Figure 9 A cross-sectional view of a positioning part of the rear mudguard provided in an embodiment of this utility model;

[0030] Figure 10 A cross-sectional view of another positioning part, mounting hole and base part of the rear fender provided in an embodiment of the present utility model;

[0031] Figure 11 This is a top view of another positioning part, mounting hole, and base part of the rear fender provided in an embodiment of the present utility model.

[0032] Icons: 100-Rear fender; 101-Mounting hole; 102-Positioning part; 103-Base part; 200-Bolt; 300-Mounting bracket; 310-Rear swingarm; 320-Bracket. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are only used to describe differences in name and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical 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 utility model based on the specific circumstances.

[0036] like Figure 3 As shown, the rear mudguard 100 provided in this embodiment of the present invention has at least two mounting holes 101, and the rear mudguard 100 is provided with a positioning part 102. The positioning part 102 and a plurality of mounting holes 101 are arranged at intervals and correspond to the mounting bracket 300 respectively.

[0037] With the mounting bracket 300 connected to one of its mounting holes 101 by bolts 200 and the positioning part 102 engaged with the mounting bracket 300, the positioning part 102 is used to prevent the rear fender 100 from rotating around the bolts 200.

[0038] In an optional embodiment, the positioning part 102 may include a positioning protrusion, a positioning groove, or a snap-fit ​​structure.

[0039] When the positioning part 102 is engaged with the mounting bracket 300, the rear fender 100 can be initially positioned relative to the mounting bracket 300. At this time, if one of its mounting holes 101 is connected to the mounting bracket 300 by a bolt 200, the positioning part 102 and the bolt 200 together position the rear fender 100. This can effectively prevent the rear fender 100 from deflecting around the bolt 200 relative to the mounting bracket 300 during the bolt 200 tightening process, thereby ensuring that the remaining mounting holes 101 remain accurately aligned, so that the bolts 200 can be installed and tightened one by one in the remaining mounting holes 101. When installing the rear fender 100, simply align the positioning part 102 with the mounting bracket 300, then align any mounting hole 101 and connect the mounting hole 101 to the mounting bracket 300 via bolts 200. This ensures that the remaining mounting holes 101 are accurately aligned with the mounting bracket 300. There is no need to restrict the installation and tightening sequence of the bolts 200 corresponding to multiple mounting holes 101, which facilitates assembly and avoids the rear fender 100 deflection and rework caused by tightening the bolts 200.

[0040] In this embodiment of the invention, the positioning part 102 includes a positioning post adapted to the mounting bracket 300, and the mounting bracket 300 has a positioning hole corresponding to the positioning post. When installing the rear mudguard 100, the positioning post is inserted into the positioning hole on the mounting bracket 300. Then, simply align any mounting hole 101 with the hole on the mounting bracket 300, install the bolt 200 therein and tighten it, and a stable connection between the rear mudguard 100 and the mounting bracket 300 can be achieved.

[0041] Furthermore, the rear fender 100 can be made of metal materials such as aluminum alloy or stainless steel, but in order to achieve lightweighting and reduce production costs, it can be made of plastic material and processed by injection molding to form the rear fender 100.

[0042] See Figure 4 The diameter D of the positioning post can be configured from 3mm to 10mm. In actual production, the diameter D of the positioning post can be 4mm, 5mm, 6mm or 8mm, etc. In addition, in order to facilitate demolding after the positioning post is processed, and to facilitate the insertion of the positioning post into the positioning hole, a chamfer with a radius shrinkage dimension of 0.3mm to 1mm can be set at the head end of the positioning post.

[0043] In addition, the difference f between the radius of the locating hole and the radius of the locating post is 0.1mm to 1mm, so that the locating post can be easily inserted into the locating hole and achieve a clearance fit. To reduce the machining accuracy requirements while taking into account the ease of operation and accuracy of inserting the locating post into the locating hole, the difference f between the radius of the locating hole and the radius of the locating post can be configured to 0.5mm.

[0044] In addition, the distance between the positioning post and any mounting hole 101 should be greater than or equal to 5mm. This not only ensures that the positioning post can withstand the torque of the rear mudguard 100 rotating around the bolt 200, but also ensures that the distance a between adjacent holes on the mounting bracket 300 is greater than or equal to 5mm, corresponding to the distance between the positioning post and the mounting hole 101. This makes it easier to process the mounting bracket 300 and reduces the impact of the hole position on the structural strength of the mounting bracket 300.

[0045] like Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, the rear fender 100 has a base portion 103, and a positioning portion 102 is disposed on the base portion 103. When the positioning portion 102 is engaged with the mounting bracket 300, the base portion 103 abuts against the surface of the mounting bracket 300. The rear fender 100 can be manufactured using injection molding, forming an integral positioning portion 102 and base portion 103. When the positioning portion 102 is engaged with the mounting bracket 300, the base portion 103 supports the mounting bracket 300, ensuring a certain distance between the body of the rear fender 100 and the mounting bracket 300. After the mounting hole 101 is connected to the mounting bracket 300 by bolts 200, the base portion 103 remains tightly fitted to the mounting bracket 300, preventing collision between the body of the rear fender 100 and the mounting bracket 300.

[0046] In the embodiment where the positioning part 102 is configured as a positioning post, when the base part 103 abuts against the surface of the mounting bracket 300, the head end of the positioning post passes through the positioning hole on the mounting bracket 300, and the length Φ of the positioning post extending outside the positioning hole is 0.5mm (the positioning post is 0.5mm higher than the surface of the mounting bracket 300).

[0047] See Figure 9 and Figure 10 In an optional embodiment, the positioning post is configured as a hollow structure. This is particularly suitable when the positioning post length is less than or equal to 5 mm, as the hollow structure of the positioning post can prevent shrinkage marks on the outer surface during injection molding.

[0048] In an alternative implementation, the locating pin can be appropriately drafted (see [reference]). Figure 6 The draft angle is configured to be 0.1° to 1°, and can be 0.1°, 0.2°, 0.3° or 0.5°, etc. The diameter decreases from the root of the positioning post to the head of the positioning post, which facilitates demolding after the positioning post is processed and forming, and makes it easy to insert the positioning post into the corresponding positioning hole.

[0049] In an optional embodiment, the positioning part 102 includes a positioning hole adapted to the mounting bracket 300. The mounting bracket 300 is provided with positioning posts. When the mudguard 100 is injection molded, only positioning holes need to be provided at the positions of the positioning posts of the mounting bracket 300, thus reducing the difficulty of injection mold processing for the mudguard 100 after processing.

[0050] like Figure 4 , Figure 6 and Figure 7 As shown, in an optional embodiment, the base portion 103 is hollow inside, and the wall thickness W1 of the base portion 103 near the positioning portion 102 is greater than the wall thickness W2 away from the positioning portion 102.

[0051] The base portion 103 has a larger wall thickness W1 at the end near the positioning portion 102, which strengthens the structure and ensures the stability of the base portion 103 in supporting the positioning portion 102. The base portion 103 has a smaller wall thickness W2 at the end away from the positioning portion 102, which helps to prevent shrinkage marks during injection molding.

[0052] Furthermore, provided that the structural strength allows, the wall thickness W2 of the base portion 103 at the end away from the positioning portion 102 can be configured to be less than or equal to 1.2mm, which will better prevent shrinkage during the injection molding process.

[0053] In an optional embodiment, a plurality of base portions 103 may be formed on the rear fender 100, with the base portions 103 spaced apart, and positioning portions 102 and a plurality of mounting holes 101 respectively provided on the base portions 103. The base portions 103 may be configured as a solid structure or as a hollow structure with an opening on one side, thus avoiding shrinkage during injection molding.

[0054] See Figure 10 and Figure 11 The positioning part 102 can be set on the bolt mounting surface corresponding to the mounting hole 101, which helps to simplify the mold structure and reduce manufacturing costs.

[0055] Furthermore, at least one mounting hole 101 is provided on the base portion 103, which can improve the structural compactness. The mounting hole 101 and the positioning portion 102 are machined on the same base portion 103, which reduces the structural complexity and makes it easier to process and form.

[0056] Specifically, when demolding, the base portion 103, which is configured with a side opening and a hollow structure, needs to cooperate with the slider inside its hollow structure to integrate the positioning portion 102 and at least one mounting hole 101 on the same base portion 103. This can reduce the number of sliders required and reduce mold costs.

[0057] like Figure 3 , Figure 4and Figure 5 As shown, the rear fender assembly mechanism provided in this embodiment of the present invention includes: a rear fender 100 and a mounting bracket 300 as described in the above embodiments; the positioning part 102 in the rear fender 100 is fitted to the mounting bracket 300, and at least two mounting holes 101 in the rear fender 100 are respectively connected to the mounting bracket 300 by bolts 200.

[0058] When installing the rear fender 100, the positioning part 102 is fitted into the mounting bracket 300, and then any mounting hole 101 is connected to the mounting bracket 300 by a bolt 200. When the bolt 200 is tightened, the positioning part 102 can restrict the rear fender 100 from deflecting around the bolt 200, thereby ensuring that the remaining mounting holes 101 are accurately aligned with their corresponding positions. Subsequently, bolts 200 are installed and tightened one by one in the mounting holes 101. During the process, there is no need to set the order of installing and tightening the bolts 200 in the multiple mounting holes 101.

[0059] In this embodiment of the invention, the mounting bracket 300 includes a rear horizontal fork 310, which has holes corresponding to the mounting holes 101 and mating parts adapted to the positioning part 102. When the positioning part 102 is a positioning post, the mating part is set as a positioning hole adapted to the positioning post; when the positioning part 102 is a positioning hole, the mating part is set as a positioning post adapted to the positioning hole. Furthermore, the positioning part 102 and the mating part can also be configured as a mutually adaptable snap-fit ​​structure, etc.

[0060] In another optional embodiment, the mounting bracket 300 includes a rear swingarm 310 and a bracket 320 connecting the rear swingarm 310, with at least one of the mounting hole 101 and the positioning part 102 corresponding to the bracket 320. When there is insufficient installation space between the rear swingarm 310 and the rear fender 100, the bracket 320 can be added to the rear swingarm 310 for connection. The hole corresponding to the mounting hole 101 or the positioning part 102 can be set on the bracket 320, or both the positioning part 102 and the hole corresponding to at least one mounting hole 101 can be set on the bracket 320, thereby facilitating the connection operation between the rear fender 100 and the mounting bracket 300.

[0061] The electric vehicle provided in this embodiment is equipped with the rear mudguard 100 described in the above embodiment, or the electric vehicle has the rear mudguard assembly mechanism described in the above embodiment. The electric vehicle described in this embodiment has the technical advantages of the rear mudguard 100 and the rear mudguard assembly mechanism, which will not be repeated here.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rear mudguard having at least two mounting holes (101), characterized in that, The rear mudguard (100) is provided with a positioning part (102), and the positioning part (102) and a plurality of mounting holes (101) are arranged at intervals and respectively correspond to the mounting bracket (300); With the mounting bracket (300) connected to one of the mounting holes (101) by a bolt (200) and the positioning part (102) engaged with the mounting bracket (300), the positioning part (102) is used to prevent the rear fender (100) from rotating around the bolt (200).

2. The rear mudguard according to claim 1, characterized in that, The positioning part (102) includes a positioning post adapted to the mounting bracket (300).

3. The rear mudguard according to claim 2, characterized in that, The positioning post is configured as a hollow structure.

4. The rear mudguard according to claim 1, characterized in that, The positioning part (102) includes a positioning hole adapted to the mounting bracket (300).

5. The rear mudguard according to any one of claims 1 to 4, characterized in that, The rear mudguard (100) is provided with a base portion (103), and the positioning portion (102) is disposed on the base portion (103); With the positioning part (102) engaged with the mounting bracket (300), the base part (103) abuts against the surface of the mounting bracket (300).

6. The rear mudguard according to claim 5, characterized in that, The base portion (103) is hollow inside, and the wall thickness of the base portion (103) near the positioning portion (102) is greater than the wall thickness of the end away from the positioning portion (102).

7. The rear mudguard according to claim 5, characterized in that, At least one of the mounting holes (101) is provided on the base portion (103).

8. A rear mudguard assembly mechanism, characterized in that, include: The rear fender (100) and the mounting bracket (300) as described in any one of claims 1-7. The positioning part (102) in the rear mudguard (100) is fitted to the mounting bracket (300), and at least two mounting holes (101) in the rear mudguard (100) are respectively connected to the mounting bracket (300) by bolts (200).

9. The rear mudguard assembly mechanism according to claim 8, characterized in that, The mounting bracket (300) includes a rear horizontal fork (310), which has holes corresponding to the mounting holes (101) and a mating part adapted to the positioning part (102); Alternatively, the mounting bracket (300) may include a rear swingarm (310) and a bracket (320) connecting the rear swingarm (310), with at least one of the mounting hole (101) and the positioning part (102) corresponding to the bracket (320).

10. An electric vehicle, characterized in that, The electric vehicle is equipped with a rear fender (100) as described in any one of claims 1-7, or the electric vehicle has a rear fender assembly mechanism as described in claim 8 or 9.

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