Fixing assembly and vehicle

Abstract

The utility model discloses a fixing assembly and a vehicle. The fixing assembly comprises a mounting part and a fixing part, the mounting part is provided with a limiting groove, and the inner wall of the limiting groove is provided with at least one pair of first clamping faces oppositely arranged in the radial direction of the limiting groove; the fixing piece is arranged in the limiting groove, the fixing piece is provided with at least one pair of second clamping faces oppositely arranged in the radial direction of the limiting groove, and the first clamping faces abut against the second clamping faces so that the fixing piece can be limited in the circumferential direction of the limiting groove; wherein a clamping groove extending in the radial direction of the limiting groove is formed in the bottom wall of the limiting groove, the fixing piece is provided with a protruding part protruding towards the installation part, and the protruding part is correspondingly arranged in the clamping groove. Therefore, the first clamping face of the limiting groove abuts against the second clamping face of the fixing piece, the fixing piece is limited in the circumferential direction of the limiting groove, meanwhile, the protruding part is arranged in the clamping groove, the fixing piece is further prevented from rotating relative to the installation part, and therefore the connection stability of the fixing piece and the installation part is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle parts, in particular to a fixing assembly and a vehicle. BACKGROUND

[0002] With the rapid development of economy and the continuous enhancement of technology, automobiles such as electric vehicles are rapidly popularizing.

[0003] At present, many fixing assemblies are needed to connect different parts during the assembly of vehicles, and the installation stability of the existing fixing assemblies is poor, and risks such as following rotation are prone to occur during the assembly process. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the present application is to provide a fixing assembly and a vehicle, which aims to solve the above technical problems existing in the prior art.

[0005] To solve the above problems, the present application provides a fixing assembly, which comprises a mounting part and a fixing part, the mounting part is provided with a limiting groove, the inner wall of the limiting groove is provided with at least one pair of first clamping surfaces arranged opposite in the radial direction of the limiting groove; the fixing part is arranged in the limiting groove, the fixing part is provided with at least one pair of second clamping surfaces arranged opposite in the radial direction of the limiting groove, the first clamping surface and the second clamping surface abut to limit the fixing part in the circumferential direction of the limiting groove; wherein the bottom wall of the limiting groove is provided with a clamping groove extending in the radial direction of the limiting groove, the fixing part is provided with a protruding part protruding towards the mounting part, the protruding part is correspondingly arranged in the clamping groove to limit the fixing part in the circumferential direction of the limiting groove.

[0006] In some embodiments, the number of first clamping surfaces is four pairs, the number of second clamping surfaces is four pairs, and one pair of first clamping surfaces abuts one pair of second clamping surfaces.

[0007] In some embodiments, the first distance between the two first clamping surfaces arranged opposite is greater than the second distance between the two second clamping surfaces arranged opposite.

[0008] In some embodiments, the eight second clamping surfaces are sequentially connected in the circumferential direction of the limiting groove, the adjacent two second clamping surfaces form an included angle, and the third distance between the two included angles arranged opposite is greater than twice the first distance.

[0009] In some embodiments, the bottom wall of the limiting groove is provided with a first fixing hole, and the fixing assembly further comprises a connecting column, the connecting column is arranged in the first fixing hole and connected with the fixing part.

[0010] In some embodiments, the fixing member is provided with a second fixing hole in communication with the first fixing hole, the connecting column is provided with a first thread, and an inner wall of the second fixing hole is provided with a second thread, and the connecting column is inserted into the second fixing hole through the first thread and the second thread.

[0011] In some embodiments, the mounting portion includes a first wall portion and a second wall portion arranged at intervals, the limiting slot is arranged in one of the first wall portion and the second wall portion, the other of the first wall portion and the second wall portion is provided with a third fixing hole, the third fixing hole, the first fixing hole and the second fixing hole are sequentially in communication, and the connecting column is sequentially inserted into the third fixing hole, the first fixing hole and the second fixing hole.

[0012] In some embodiments, the number of the locking slots and the number of the protruding portions are plural, the plurality of locking slots are arranged along the circumferential direction of the limiting slot, and one protruding portion is arranged in one limiting slot.

[0013] In some embodiments, the depth of the limiting slot is greater than or equal to 1.1 mm.

[0014] To solve the above problems, the application provides a vehicle, which comprises the fixing assembly.

[0015] Compared with the prior art, the fixing assembly provided by the application comprises a mounting portion and a fixing member, the mounting portion is provided with a limiting slot, an inner wall of the limiting slot is provided with at least one pair of first locking surfaces arranged opposite in the radial direction of the limiting slot, the fixing member is arranged in the limiting slot, the fixing member is provided with at least one pair of second locking surfaces arranged opposite in the radial direction of the limiting slot, the first locking surface and the second locking surface abut to limit the fixing member in the circumferential direction of the limiting slot, a bottom wall of the limiting slot is provided with a locking slot extending in the radial direction of the limiting slot, the fixing member is provided with a protruding portion protruding towards the mounting portion, and the protruding portion is arranged in the locking slot to limit the fixing member in the circumferential direction of the limiting slot. Through the above-mentioned embodiments, the first locking surface of the limiting slot and the second locking surface of the fixing member abut to limit the fixing member in the circumferential direction of the limiting slot, which prevents the fixing member from rotating relative to the mounting portion, and at the same time, the protruding portion is arranged in the locking slot, which further prevents the fixing member from rotating relative to the mounting portion, thereby improving the connection stability of the fixing member and the mounting portion. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative effort.

[0017] Figure 1 is a structural schematic diagram of a vehicle according to one or more embodiments of the application;

[0018] Figure 2 is a structural schematic diagram of a fixing assembly according to one or more embodiments of the present application;

[0019] Figure 3 is a first structural schematic diagram of a mounting portion of a fixing assembly according to one or more embodiments of the present application;

[0020] Figure 4 is a second structural schematic diagram of a mounting portion of a fixing assembly according to one or more embodiments of the present application;

[0021] Figure 5 is a first structural schematic diagram of a fixing member of a fixing assembly according to one or more embodiments of the present application;

[0022] Figure 6 is a second structural schematic diagram of a fixing member of a fixing assembly according to one or more embodiments of the present application;

[0023] Figure 7 is a first structural schematic diagram of a connecting column of a fixing assembly according to one or more embodiments of the present application.

[0024] Reference signs: vehicle 1; fixing assembly 2; mounting portion 10; limiting groove 11; first clamping surface 111; bottom wall 112; clamping groove 113; first fixing hole 114; first wall portion 12; second wall portion 13; third fixing hole 14; fixing member 20; second clamping surface 21; protruding portion 22; second fixing hole 23; second thread 24; connecting column 30; first thread 31; first distance D1; second distance D2; third distance D3. DETAILED DESCRIPTION

[0025] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0028] Reference herein to "embodiments" means that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily a separate or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0030] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0031] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0032] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0033] With the rapid development of economy and the continuous enhancement of technology, automobiles such as electric vehicles are rapidly popularizing.

[0034] At present, in the process of assembling a vehicle, different parts need to be connected through many fixing assemblies, and the existing fixing assemblies have poor installation stability and are prone to risks such as rotation during the assembly process.

[0035] The present application provides a vehicle, please refer to Figure 1 , Figure 1 is a structural schematic diagram of a vehicle according to one or more embodiments of the present application.

[0036] The vehicle 1 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid automobile or a range extended automobile. The vehicle 1 can be a front drive vehicle, a four-wheel drive vehicle, etc. The vehicle 1 is provided with a fixing assembly 2, which can be used for the assembly of the vehicle 1, for example, for the fixed connection between different parts.

[0037] As shown in Figures 2-7 , Figure 2 is a structural schematic diagram of a fixing assembly according to one or more embodiments of the present application; Figure 3 is a first structural schematic diagram of a mounting portion of a fixing assembly according to one or more embodiments of the present application; Figure 4 is a second structural schematic diagram of a mounting portion of a fixing assembly according to one or more embodiments of the present application; Figure 5 is a first structural schematic diagram of a fixing member of a fixing assembly according to one or more embodiments of the present application; Figure 6 is a second structural schematic diagram of a fixing member of a fixing assembly according to one or more embodiments of the present application; Figure 7 is a first structural schematic diagram of a connecting column of a fixing assembly according to one or more embodiments of the present application.

[0038] To solve the above problems, the present application provides a fixing assembly 2, which comprises a mounting portion 10 and a fixing member 20. The mounting portion 10 is provided with a limiting groove 11, and the inner wall of the limiting groove 11 is provided with at least one pair of first clamping surfaces 111 arranged opposite in the radial direction of the limiting groove 11. The fixing member 20 is arranged in the limiting groove 11, and the fixing member 20 is provided with at least one pair of second clamping surfaces 21 arranged opposite in the radial direction of the limiting groove 11. The first clamping surface 111 and the second clamping surface 21 abut to limit the fixing member 20 in the circumferential direction of the limiting groove 11. The bottom wall 112 of the limiting groove 11 is provided with a clamping groove 113 extending in the radial direction of the limiting groove 11, and the fixing member 20 is provided with a protruding portion 22 protruding towards the mounting portion 10. The protruding portion 22 is arranged in the clamping groove 113 to limit the fixing member 20 in the circumferential direction of the limiting groove 11.

[0039] The fixing member 20 can be used to fixedly connect other components with the mounting portion 10. The mounting portion 10 is provided with a limiting groove 11, and the fixing member 20 is arranged in the limiting groove 11. The limiting groove 11 can be used to accommodate the fixing member 20 and provide support and limiting for the fixing member 20. It should be noted that the fixing member 20 can be partially or entirely accommodated in the limiting groove 11. The inner wall of the limiting groove 11 is provided with at least one pair of first clamping surfaces 111 arranged opposite in the radial direction of the limiting groove 11. The fixing member 20 is provided with at least one pair of second clamping surfaces 21 arranged opposite in the radial direction of the limiting groove 11. The number of the first clamping surfaces 111 and the second clamping surfaces 21 includes but is not limited to one pair, two pairs, three pairs or more, and the number of the first clamping surfaces 111 and the second clamping surfaces 21 is correspondingly arranged. A plurality of first clamping surfaces 111 can be connected to each other. For example, the first clamping surfaces 111 can be three pairs, and the three pairs of first clamping surfaces 111 are connected to each other to form a hexagon. The second clamping surfaces 21 can also be three pairs, and the three pairs of second clamping surfaces 21 are connected to each other to form a hexagon. One pair of first clamping surfaces 111 abuts against one pair of second clamping surfaces 21. The first clamping surfaces 111 and the second clamping surfaces 21 abut against each other. It can be understood that when the fixing member 20 has a tendency to rotate relative to the mounting portion 10, the first clamping surfaces 111 can hinder the second clamping surfaces 21 from rotating in the circumferential direction of the limiting groove 11, thereby limiting the fixing member 20 in the circumferential direction of the limiting groove 11. The bottom wall 112 of the limiting groove 11 is provided with a clamping groove 113 extending in the radial direction of the limiting groove 11. The protruding portion 22 of the fixing member 20 is correspondingly arranged in the clamping groove 113. It can be understood that when the fixing member 20 has a tendency to rotate relative to the mounting portion 10, the clamping groove 113 can hinder the protruding portion 22 from rotating in the circumferential direction of the limiting groove 11, thereby limiting the fixing member 20 in the circumferential direction of the limiting groove 11, and facilitating to alleviate the risk of rotation of the fixing member 20 relative to the mounting portion 10.

[0040] According to the above embodiment, the first clamping surfaces 111 of the limiting groove 11 and the second clamping surfaces 21 of the fixing member 20 abut against each other, thereby limiting the fixing member 20 in the circumferential direction of the limiting groove 11 and hindering the fixing member 20 from rotating relative to the mounting portion 10. Meanwhile, the protruding portion 22 is arranged in the clamping groove 113, further hindering the fixing member 20 from rotating relative to the mounting portion 10, thereby improving the connection stability of the fixing member 20 and the mounting portion 10.

[0041] In some embodiments, the number of the first locking surfaces 111 is four pairs, and the number of the second locking surfaces 21 is four pairs. One pair of the first locking surfaces 111 is in abutment with one pair of the second locking surfaces 21. Specifically, the four pairs of the first locking surfaces 111 are connected to each other to form an octagon, and the four pairs of the second locking surfaces 21 are connected to each other to form an octagon. One pair of the first locking surfaces 111 is in abutment with one pair of the second locking surfaces 21. It can be understood that by arranging more first locking surfaces 111 and second locking surfaces 21, the force of the limiting groove 11 resisting the rotation of the fixing member 20 is further increased, and the connection stability of the fixing member 20 and the mounting portion 10 is improved.

[0042] In some embodiments, the first spacing D1 between the two oppositely arranged first locking surfaces 111 is greater than the second spacing D2 between the two oppositely arranged second locking surfaces 21. Thus, by arranging the first spacing D1 between the two oppositely arranged first locking surfaces 111 to be greater than the second spacing D2 between the two oppositely arranged second locking surfaces 21, the fixing member 20 can be smoothly arranged in the limiting groove 11. It should be noted that the first spacing D1 can refer to the size of the opposite sides of the limiting groove 11, and the second spacing D2 can refer to the size of the opposite sides of the fixing member 20. The first spacing D1 can be greater than 30 mm and less than or equal to 40 mm. Specifically, the first spacing D1 can be, but is not limited to, 31 mm, 33 mm, 35 mm, 37 mm, 38 mm, 40 mm, etc. Alternatively, the first spacing D1 can be 35 mm. The second spacing D2 can be greater than or equal to 30 mm and less than 40 mm. Specifically, the second spacing D2 can be, but is not limited to, 30 mm, 31 mm, 33 mm, 35 mm, 37 mm, 38 mm, etc. When the first spacing D1 is 35 mm, the second spacing D2 can be 34 mm.

[0043] In some embodiments, the eight second locking surfaces 21 are sequentially connected in the circumferential direction of the limiting groove 11. The two adjacent second locking surfaces 21 form an included angle. The sum of the third spacing D3 between the two oppositely arranged included angles and the second spacing D2 is greater than twice the first spacing D1. Exemplarily, the eight second locking surfaces 21 can be sequentially connected to form a regular octagon. The included angle can refer to the vertex angle of the regular octagon, and the third spacing D3 can refer to the diagonal size of the fixing member 20. It can be understood that the sum of the third spacing D3 and the second spacing D2 is greater than twice the first spacing D1. In some application scenarios, that is, the sum of the opposite side size and the diagonal size of the fixing member 20 is greater than twice the opposite side size of the limiting groove 11, which is beneficial to alleviate the risk of relative sliding caused by the locking failure between the first locking surface 111 and the second locking surface 21 due to the size of the fixing member 20 being too small, and improves the connection stability of the fixing member 20 and the mounting portion 10.

[0044] In some embodiments, the bottom wall 112 of the limiting groove 11 is provided with a first fixing hole 114, and the fixing assembly 2 further comprises a connecting column 30 which is arranged through the first fixing hole 114 and connected with the fixing piece 20. It can be understood that the connecting column 30 is arranged through the first fixing hole 114 and connected with the fixing piece 20, so as to further improve the connection stability of the fixing piece 20 and the mounting portion 10 through the connecting column 30.

[0045] In some embodiments, the fixing piece 20 is provided with a second fixing hole 23 which is in communication with the first fixing hole 114, the connecting column 30 is provided with a first thread 31, the inner wall of the second fixing hole 23 is provided with a second thread 24, and the connecting column 30 is arranged in the second fixing hole 23 through the first thread 31 and the second thread 24. In this embodiment, the first thread 31 is an external thread, the second thread 24 is an internal thread, and the connecting column 30 and the fixing piece 20 are connected together through the internal and external threads. It is to be explained that the connecting column 30 and the fixing piece 20 are connected through the threads, which is more stable and easier to disassemble and connect than the clamping and insertion. In some application scenarios, the connecting column 30 is a bolt, the fixing piece 20 is a nut, and when the number of the first clamping surfaces 111 and the second clamping surfaces 21 is four pairs, the fixing piece 20 can be an octagonal nut. It is to be explained that in the process of fastening the connecting column 30 and the fixing piece 20 through the first thread 31 and the second thread 24, the connecting column 30 rotates in the first fixing hole 114 and the second fixing hole 23, the connecting column 30 can drive the fixing piece 20 to rotate through friction, the first clamping surface 111 and the second clamping surface 21 are matched with each other, and the clamping groove 113 and the protruding portion 22 are matched with each other, so as to hinder the fixing piece 20 from rotating relative to the limiting groove 11, thereby reducing the risk of the fixing piece 20 rotating relative to the mounting portion 10 driven by the connecting column 30 in the fastening process.

[0046] In some embodiments, the mounting portion 10 comprises a first wall portion 12 and a second wall portion 13 arranged in a spaced manner, the limiting groove 11 is arranged in one of the first wall portion 12 and the second wall portion 13, the other of the first wall portion 12 and the second wall portion 13 is provided with the third fixing hole 14, the third fixing hole 14, the first fixing hole 114 and the second fixing hole 23 are sequentially communicated, and the connecting column 30 is sequentially arranged in the third fixing hole 14, the first fixing hole 114 and the second fixing hole 23. The limiting groove 11 is arranged in one of the first wall portion 12 and the second wall portion 13, and the limiting groove 11 can be arranged in the first wall portion 12 or arranged in the second wall portion 13. Exemplarily, the limiting groove 11 can be arranged on the side of the first wall portion 12 away from the second wall portion 13, the fixing member 20 is arranged in the limiting groove 11, and the connecting column 30 can be sequentially arranged in the third fixing hole 14, the first fixing hole 114 and the second fixing hole 23, so as to further improve the connection stability of the fixing member 20 and the mounting portion 10. In some application scenarios, the workpiece to be connected can be arranged between the first wall portion 12 and the second wall portion 13, and the workpiece to be connected can be provided with a fourth fixing hole, the connecting column 30 can be sequentially arranged in the third fixing hole 14, the fourth fixing hole, the first fixing hole 114 and the second fixing hole 23, so that the workpiece to be connected is connected with the mounting portion 10 through the connecting column 30 and the fixing member 20, and further, the workpiece to be connected can also rotate around the connecting column 30, and through the cooperation of the first clamping surface 111 and the second clamping surface 21 and the clamping groove 113 and the protruding portion 22, the risk that the workpiece to be connected drives the fixing member 20 to rotate relative to the mounting portion 10 can be reduced.

[0047] In some embodiments, the number of the locking grooves 113 and the number of the protruding portions 22 are multiple, the multiple locking grooves 113 are arranged along the circumferential direction of the limiting groove 11, and one protruding portion 22 is arranged in one limiting groove 11. For example, the number of the locking grooves 113 can be three, and the number of the protruding portions 22 can also be three, and one protruding portion 22 is arranged in one limiting groove 11. The multiple locking grooves 113 can be arranged at intervals in the circumferential direction of the limiting groove 11. In this way, by arranging multiple locking grooves 113 and protruding portions 22, the risk of rotation of the fixing member 20 relative to the mounting portion 10 can be further alleviated, and the connection stability of the fixing member 20 and the mounting portion 10 can be improved. In some application scenarios, the length dimension of the protruding portion 22 in the radial direction of the limiting groove 11 can be greater than or equal to 6 mm and less than or equal to 14 mm. Specifically, the length dimension of the protruding portion 22 can include but is not limited to 6 mm, 8 mm, 10 mm, 11 mm, 13 mm, 14 mm, and the like. Optionally, the length dimension of the protruding portion 22 is 10 mm. The width dimension of the protruding portion 22 in the direction perpendicular to the radial direction of the limiting groove 11 can be greater than or equal to 1 mm and less than or equal to 3 mm. Specifically, the width dimension of the protruding portion 22 can include but is not limited to 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, and the like. Optionally, the width dimension of the protruding portion 22 is 2 mm. The height dimension of the protruding portion 22 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm. Specifically, the height dimension of the protruding portion 22 can include but is not limited to 0.5 mm, 0.8 mm, 1 mm, 1.3 mm, 1.5 mm, and the like. Optionally, the height dimension of the protruding portion 22 is 1 mm. In some application scenarios, the depth dimension of the locking groove 113 can be greater than or equal to 0.7 mm and less than or equal to 1.5 mm. Specifically, the depth dimension of the locking groove 113 can include but is not limited to 0.7 mm, 0.8 mm, 1 mm, 1.1 mm, 1.4 mm, 1.5 mm, and the like. Optionally, the depth dimension of the locking groove 113 is 1.1 mm. The width dimension of the locking groove 113 can be greater than the width dimension of the reinforcing rib. The width dimension of the locking groove 113 can be greater than or equal to 1.5 mm. Optionally, the width dimension of the locking groove 113 can include but is not limited to 1.5 mm, 1.6 mm, 2 mm, 2.2 mm, 2.5 mm, and the like. Optionally, the width dimension of the locking groove 113 is 2.2 mm.

[0048] In some embodiments, the depth dimension of the limiting groove 11 is greater than or equal to 1.1 mm. Specifically, the depth dimension of the limiting groove 11 can include but is not limited to 1.1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 2 mm, 3 mm, and the like. Optionally, the depth dimension of the limiting groove 11 can be 2 mm. In this way, by setting the depth dimension of the limiting groove 11 to be larger, the connection stability of the fixing member 20 and the mounting portion 10 can be improved.

[0049] In summary, the fixing assembly 2 provided by the application comprises a mounting portion 10 and a fixing piece 20. The mounting portion 10 is provided with a limiting groove 11. The inner wall of the limiting groove 11 is provided with at least one pair of first clamping surfaces 111 arranged opposite in the radial direction of the limiting groove 11. The fixing piece 20 is arranged in the limiting groove 11. The fixing piece 20 is provided with at least one pair of second clamping surfaces 21 arranged opposite in the radial direction of the limiting groove 11. The first clamping surfaces 111 and the second clamping surfaces 21 abut to limit the fixing piece 20 in the circumferential direction of the limiting groove 11. The bottom wall 112 of the limiting groove 11 is provided with a clamping groove 113 extending in the radial direction of the limiting groove 11. The fixing piece 20 is provided with a protruding portion 22 protruding towards the mounting portion 10. The protruding portion 22 is arranged in the clamping groove 113 to limit the fixing piece 20 in the circumferential direction of the limiting groove 11. According to the above embodiment, the first clamping surfaces 111 of the limiting groove 11 and the second clamping surfaces 21 of the fixing piece 20 abut to limit the fixing piece 20 in the circumferential direction of the limiting groove 11, thereby preventing the fixing piece 20 from rotating relative to the mounting portion 10. Meanwhile, the protruding portion 22 is arranged in the clamping groove 113, thereby further preventing the fixing piece 20 from rotating relative to the mounting portion 10, so as to improve the connection stability of the fixing piece 20 and the mounting portion 10.

[0050] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, but not to limit them; although the application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application, and they should be covered in the scope of the claims and the specification of the application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fastening assembly comprising: The fixing assembly comprises: a mounting portion provided with a limiting groove, an inner wall of the limiting groove being provided with at least a pair of first clamping surfaces arranged opposite in a radial direction of the limiting groove; a fixing member arranged in the limiting groove, the fixing member being provided with at least a pair of second clamping surfaces arranged opposite in the radial direction of the limiting groove, the first clamping surfaces and the second clamping surfaces abutting to limit the fixing member in a circumferential direction of the limiting groove; wherein a bottom wall of the limiting groove is provided with a clamping groove extending in the radial direction of the limiting groove, the fixing member is provided with a protruding portion protruding towards the mounting portion, and the protruding portion is arranged in the clamping groove to limit the fixing member in the circumferential direction of the limiting groove.

2. The fixture assembly of claim 1, wherein, The number of the first clamping surfaces is four pairs, and the number of the second clamping surfaces is four pairs. One pair of the first clamping surfaces abuts one pair of the second clamping surfaces.

3. The fixture assembly of claim 2, wherein, A first spacing between two first clamping surfaces arranged opposite is greater than a second spacing between two second clamping surfaces arranged opposite.

4. The fixture assembly of claim 3, wherein, Eight second clamping surfaces are sequentially connected in the circumferential direction of the limiting groove. An included angle is formed between two adjacent second clamping surfaces. A third spacing between two opposite included angles is greater than twice the first spacing.

5. The fixture assembly of claim 1, wherein, The bottom wall of the limiting groove is provided with a first fixing hole. The fixing assembly further comprises a connecting column, the connecting column being arranged in the first fixing hole and connected with the fixing member.

6. The fixture assembly of claim 5, wherein, The fixing member is provided with a second fixing hole, the second fixing hole being in communication with the first fixing hole. The connecting column is provided with a first thread. An inner wall of the second fixing hole is provided with a second thread. The connecting column is arranged in the second fixing hole through the first thread and the second thread.

7. The fixture assembly of claim 6, wherein, The mounting portion comprises a first wall portion and a second wall portion arranged at intervals. The limiting groove is arranged in one of the first wall portion and the second wall portion. The other of the first wall portion and the second wall portion is provided with a third fixing hole. The third fixing hole, the first fixing hole and the second fixing hole are sequentially in communication. The connecting column is sequentially arranged in the third fixing hole, the first fixing hole and the second fixing hole.

8. The fixture assembly of claim 1, wherein, The number of the clamping grooves and the protruding portions is a plurality. The plurality of clamping grooves are arranged in the circumferential direction of the limiting groove. One protruding portion is arranged in one limiting groove.

9. The fixture assembly of claim 1, wherein, The depth of the limiting groove is greater than or equal to 1.1 mm.

10. A vehicle characterized by comprising: The vehicle comprises the fixing assembly according to any one of claims 1-9.

Images