Plate spring for vehicle and vehicle

Abstract

The utility model discloses a plate spring used for a vehicle and the vehicle, the plate spring used for the vehicle comprises a plate spring body, the plate spring body is arranged below a frame longitudinal beam, two ends of the plate spring body are respectively connected with the frame longitudinal beam; one end of the positioning piece is connected with the plate spring body, the other end of the positioning piece extends in the direction away from the plate spring body, and the other end of the positioning piece is suitable for being matched in a positioning hole of an axle assembly; wherein the other end of the positioning piece is provided with a first guide face, the positioning hole is provided with a second guide face, and the first guide face is attached to the second guide face. According to the plate spring for the vehicle, compared with a traditional plate spring, the front axle is prevented from deviating, the problem that the vehicle deviates in the driving process is solved, and therefore the driving quality is improved, and driving safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile leaf springs, in particular to a leaf spring used for a vehicle and the vehicle. Background Art

[0002] With the rapid development of the automobile industry, the requirements for the handling stability of commercial vehicles are becoming increasingly stringent. As a driver, you can intuitively feel the problem of vehicle deviation. Therefore, the problem of vehicle deviation has become one of the important factors in measuring the driving quality of vehicles of various brands. The installation deviation of the vehicle's front axle is one of the key factors causing the vehicle to deviate.

[0003] In the prior art, the leaf spring of a vehicle has the functions of transmitting force and torque between the wheel and the frame, shock absorption and guidance. At present, the leaf spring is connected to the frame longitudinal beam at the top thereof through two brackets and hanging ears, and the leaf spring is connected to the front axle assembly at the bottom thereof through bolts. The leaf spring and the frame longitudinal beam are symmetrically arranged in two groups. In order to ensure that the center line of the front axle assembly is perpendicular to the total symmetry line of the two groups of frame longitudinal beams, a locating pin is arranged on the leaf spring, and a locating hole is correspondingly arranged on the I-beam in the front axle assembly, and the locating pin and the locating hole are clearance-matched. The clearance-matching method will cause the pin and the hole to be non-concentric during the movement of the vehicle, which will cause the problem of front axle offset, and then cause the vehicle to deviate during driving. The driver needs to keep adjusting the steering wheel to keep the vehicle driving straight, resulting in poor driving quality of the vehicle and affecting driving safety. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a leaf spring for a vehicle, which avoids the deviation of the front axle and solves the problem of the vehicle running off the track during driving, thereby improving the driving quality and ensuring driving safety.

[0005] Another object of the present utility model is to provide a vehicle comprising the leaf spring for a vehicle.

[0006] According to the first aspect of the utility model, a leaf spring for a vehicle includes: a leaf spring body, which is arranged below the frame longitudinal beam, and the two ends of the leaf spring body are respectively connected to the frame longitudinal beam; at least one positioning member, one end of the positioning member is connected to the leaf spring body, and the other end of the positioning member extends in a direction away from the leaf spring body, and the other end of the positioning member is suitable for fitting into the positioning hole of the axle assembly; wherein the other end of the positioning member has a first guide surface, and the positioning hole has a second guide surface, and the first guide surface is in contact with the second guide surface.

[0007] The leaf spring for vehicles according to the first embodiment of the utility model realizes interference fit between the positioning member and the positioning hole, avoids deviation of the front axle, solves the problem of vehicle deviation during driving, thereby improving the driving quality and ensuring driving safety.

[0008] According to some embodiments of the utility model, the positioning member includes a connecting portion and a positioning portion connected to each other, the connecting portion is suitable for being connected to the frame longitudinal beam, and the positioning portion has the first guide surface; the outer diameter of the positioning portion gradually decreases in the direction away from the leaf spring body; the aperture of the positioning hole gradually decreases in the direction away from the leaf spring body.

[0009] According to some embodiments of the present invention, the minimum outer diameter of the positioning portion is smaller than the maximum aperture of the positioning hole, and the minimum outer diameter of the positioning portion is larger than the minimum aperture of the positioning hole.

[0010] According to some embodiments of the present invention, the minimum outer diameter of the positioning portion is D1, and the minimum aperture of the positioning hole is D2, wherein D1 and D2 satisfy: 0.5mm<D1-D2<1.0mm.

[0011] According to some embodiments of the present invention, the first guide surface extends along the circumference of the positioning portion, and the second guide surface extends along the circumference of the positioning hole.

[0012] According to some embodiments of the utility model, the angle between the first guide surface and the central axis of the positioning portion is ɑ, and the angle between the second guide surface and the central axis of the positioning hole is β, wherein ɑ and β satisfy: ɑ=β.

[0013] According to some embodiments of the present invention, the length of the positioning portion in the axial direction of the positioning member is less than or equal to the depth of the positioning hole.

[0014] According to some embodiments of the present invention, an outer diameter of the positioning portion is greater than an outer diameter of the connecting portion.

[0015] According to some embodiments of the utility model, the connecting portion includes a first connecting segment and a second connecting segment connected to each other, the second connecting segment is arranged between the first connecting segment and the positioning portion, an external thread is formed on the first connecting segment, and the first connecting segment is threadedly connected to the frame longitudinal beam.

[0016] A vehicle according to an embodiment of the second aspect of the utility model comprises a leaf spring for a vehicle according to an embodiment of the first aspect of the utility model.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a schematic diagram of assembling a leaf spring for a vehicle according to an embodiment of the utility model;

[0020] Figure 2 is a top view of an assembly of a leaf spring for a vehicle according to an embodiment of the utility model;

[0021] Figure 3 is a schematic diagram of a leaf spring for a vehicle according to an embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of a positioning member according to an embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 100. Leaf spring;

[0025] 110, leaf spring body; 120, positioning member; 130, connecting portion; 131, first connecting section; 132, second connecting section; 140, positioning portion; 141, first guide surface;

[0026] 200, frame longitudinal beam;

[0027] 300, axle assembly;

[0028] 310. Positioning hole; 311. Second guide surface. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 4 A leaf spring 100 for a vehicle according to an embodiment of a first aspect of the present invention is described.

[0030] like Figure 1-Figure 4 As shown, a leaf spring 100 for a vehicle according to an embodiment of the first aspect of the utility model includes a leaf spring body 110 and at least one positioning member 120 .

[0031] Specifically, if Figure 1 , Figure 3 and Figure 4As shown, the leaf spring body 110 is disposed below the frame longitudinal beam 200, and both ends of the leaf spring body 110 are respectively connected to the frame longitudinal beam 200. One end of the positioning member 120 is connected to the leaf spring body 110, and the other end of the positioning member 120 extends in a direction away from the leaf spring body 110, and the other end of the positioning member 120 is suitable for fitting in the positioning hole 310 of the axle assembly 300. Among them, the other end of the positioning member 120 has a first guide surface 141, and the positioning hole 310 has a second guide surface 311, and the first guide surface 141 is in contact with the second guide surface 311.

[0032] For example, Figure 1 , Figure 3 and Figure 4 As shown, the frame rail 200 and the leaf spring body 110 are arranged along a first direction (eg, Figure 1 The axle assembly 300 extends in a second direction (eg, Figure 1 In the description of the present utility model, the axle assembly 300 specifically refers to the front axle of the vehicle, and there are two frame longitudinal beams 200 and two leaf spring bodies 110. The two frame longitudinal beams 200 and the two leaf spring bodies 110 are respectively located on both sides of the axle assembly 300 in the first direction, and the first direction is perpendicular to the second direction.

[0033] The positioning member 120 is connected between the leaf spring body 110 and the axle assembly 300. During installation, one end of the positioning member 120 is connected to the leaf spring body 110, and the other end of the positioning member 120 is fitted into the positioning hole 310. At this time, the first guide surface 141 fits with the second guide surface 311 to make the positioning member 120 and the positioning hole 310 have an interference fit. The positioning member 120 can be securely fixed on the axle assembly 300, avoiding the situation where the positioning member 120 and the positioning hole 310 are not concentric after installation due to the clearance fit, thereby avoiding the deviation of the front axle and solving the problem of the vehicle running off the track during driving, thereby improving the driving quality and ensuring driving safety.

[0034] According to the leaf spring 100 for a vehicle in the embodiment of the utility model, when the positioning member 120 is matched with the positioning hole 310, the first guide surface 141 of the positioning member 120 is fitted with the second guide surface 311 of the positioning hole 310, thereby achieving an interference fit between the positioning member 120 and the positioning hole 310, avoiding the deviation of the front axle, solving the problem of the vehicle running off the track during driving, thereby improving the driving quality and ensuring driving safety.

[0035] According to some embodiments of the present invention, Figure 3 and Figure 4As shown, the positioning member 120 includes a connecting portion 130 and a positioning portion 140 connected to each other, the connecting portion 130 is suitable for connecting to the frame longitudinal beam 200, and the positioning portion 140 has a first guide surface 141. The outer diameter of the positioning portion 140 gradually decreases in the direction away from the leaf spring body 110. The aperture of the positioning hole 310 gradually decreases in the direction away from the leaf spring body 110.

[0036] That is, the outer diameter of the end of the positioning portion 140 away from the leaf spring body 110 is smaller, and the outer diameter of the end of the positioning portion 140 adjacent to the leaf spring body 110 is larger. With this arrangement, the end of the positioning portion 140 away from the leaf spring body 110 is easier to enter the positioning hole 310, thereby improving the installation efficiency. In addition, the aperture of the end of the positioning hole 310 away from the leaf spring body 110 is smaller, and the aperture of the end of the positioning hole 310 adjacent to the leaf spring body 110 is larger, so that the shape of the positioning portion 140 is adapted to the shape of the positioning hole 310, and the fit between the first guide surface 141 of the positioning portion 140 and the second guide surface 311 of the positioning hole 310 is enhanced, thereby further ensuring the stability of the leaf spring 100 after installation.

[0037] According to some specific embodiments of the present invention, the minimum outer diameter of the positioning portion 140 is smaller than the maximum aperture of the positioning hole 310 , and the minimum outer diameter of the positioning portion 140 is larger than the minimum aperture of the positioning hole 310 .

[0038] like Figure 4 As shown, the outer diameter of the free end of the positioning portion 140 is the smallest, the aperture of the top end of the positioning hole 310 is the largest, and the aperture of the bottom end of the positioning hole is the smallest. During the process of installing the positioning portion 140 into the positioning hole 310, since the smallest outer diameter of the positioning portion 140 is smaller than the largest aperture of the positioning hole 310, the free end of the positioning portion 140 can smoothly enter the positioning hole 310, and the installation efficiency is high. Since the outer diameter of the free end of the positioning portion 140 is larger than the aperture of the bottom end of the positioning hole 310, when the free end of the positioning portion 140 abuts against the side wall of the positioning hole 310, the positioning portion is installed in place, which can ensure that the positioning portion 140 and the positioning hole 310 are interference-fitted, and further ensure the stability of the leaf spring 100 after installation.

[0039] Furthermore, the minimum outer diameter of the positioning portion 140 is D1, and the minimum aperture of the positioning hole 310 is D2, wherein D1 and D2 satisfy: 0.5mm<D1-D2<1.0mm. When D1-D2≤0.5mm, it cannot be guaranteed that there is no gap between the positioning portion 140 and the positioning hole 310 after they are matched. Moreover, after the positioning portion 140 and the positioning hole 310 are used for a long time, the matching gap may increase due to wear, thereby causing the vehicle to deviate. When D1-D2>1.0mm, due to the large size difference between the positioning portion 140 and the positioning hole 310, in order to ensure that the positioning portion 140 is installed in the positioning hole 310, the size of the positioning hole 310 needs to be increased, which may affect the structural strength of the axle assembly and is not conducive to the processing of the positioning hole 310. Therefore, setting the difference between the minimum outer diameter of the positioning portion 140 and the minimum aperture of the positioning hole 310 within a reasonable range can further ensure the interference fit between the positioning portion 140 and the positioning hole 310, and avoid the positioning portion 140 from moving in the positioning hole 310 due to the fitting clearance between the positioning portion 140 and the positioning hole 310, thereby avoiding the problem of front axle installation deviation and vehicle deviation, and facilitating the processing of the positioning hole 310.

[0040] According to some embodiments of the present invention, the first guide surface 141 extends along the circumference of the positioning portion 140, and the second guide surface 311 extends along the circumference of the positioning hole 310. Specifically, the shapes of the first guide surface 141 and the second guide surface 311 are both conical surfaces, that is, the shapes of the positioning portion 140 and the positioning hole 310 are both roughly truncated cones. Therefore, as long as the positioning portion 140 and the positioning hole 310 are concentrically arranged, it can be ensured that the positioning portion 140 can be matched with the positioning hole 310. The arrangement of the first guide surface 141 and the second guide surface 311 ensures that the positioning portion 140 and the positioning hole 310 are interference-fitted, making the installation of the positioning portion 140 and the positioning hole 310 easier.

[0041] According to some specific embodiments of the utility model, the angle between the first guide surface 141 and the central axis of the positioning portion 140 is ɑ, and the angle between the second guide surface 311 and the central axis of the positioning hole 310 is β, wherein ɑ and β satisfy: ɑ=β. In this way, the inclination angle of the first guide surface 141 of the positioning portion 140 is consistent with the inclination angle of the second guide surface 311 of the positioning hole 310, thereby ensuring that the positioning portion 140 and the positioning hole 310 are more closely matched, avoiding the gap between the positioning portion 140 and the positioning hole 310 or the positioning portion 140 and the positioning hole 310 being unable to be matched and installed due to the different inclination angles of the first guide surface 141 and the second guide surface 311, further ensuring the safety and stability of vehicle driving. In addition, the inclination angle of the first guide surface 141 is consistent with the inclination angle of the second guide surface 311, and the process of the positioning portion 140 entering the positioning hole 310 during installation is smoother, thereby improving the installation efficiency.

[0042] According to some embodiments of the present invention, Figure 4 As shown, the length of the positioning portion 140 in the axial direction of the positioning member 120 is less than or equal to the depth of the positioning hole 310. Therefore, the positioning portion 140 can be fully fitted in the positioning hole 310, preventing the positioning portion 140 from being disengaged from the positioning hole 310 during vehicle driving, further ensuring the working reliability of the leaf spring 100.

[0043] According to some specific embodiments of the present invention, the outer diameter of the positioning portion 140 is greater than the outer diameter of the connecting portion 130. By setting the outer diameter of the positioning portion 140 to be greater than the outer diameter of the connecting portion 130, during installation, the operator can more clearly observe and control the position of the positioning portion 140 entering the positioning hole 310, ensuring that the positioning portion 140 can accurately enter the positioning hole 310, thereby improving installation efficiency and accuracy.

[0044] According to some embodiments of the present invention, the connecting portion 130 includes a first connecting segment 131 and a second connecting segment 132 connected to each other, the second connecting segment 132 is arranged between the first connecting segment 131 and the positioning portion 140, an external thread is formed on the first connecting segment 131, and the first connecting segment 131 is threadedly connected to the frame longitudinal beam 200.

[0045] In this way, during installation, the operator can hold the second connecting section 132 to connect the first connecting section 131 with the frame longitudinal beam 200. The provision of the second connecting section 132 improves the installation efficiency, and when the thread length of the frame longitudinal beam 200 is inconsistent with the length of the external thread on the first connecting section 131, the frame longitudinal beam 200 can cover part of the second connecting section 132, thereby avoiding interference between the frame longitudinal beam 200 and other components of the positioning member 120. The provision of the second connecting section 132 expands the application range of the positioning member 120. In addition, the first connecting section 131 and the frame longitudinal beam 200 are connected by threaded connection, which is simple in processing and reliable in connection, thereby ensuring the working reliability of the leaf spring 100.

[0046] Optionally, the positioning member 120 is an integrally formed structure, which is beneficial to reducing costs and improving processing efficiency.

[0047] A vehicle (not shown) according to an embodiment of the second aspect of the utility model comprises a leaf spring 100 for a vehicle according to an embodiment of the first aspect of the utility model.

[0048] The vehicle according to the embodiment of the utility model improves the ride quality and ensures driving safety by adopting the leaf spring 100 for the vehicle.

[0049] Other structures and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0053] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A leaf spring for a vehicle, characterized in that: include: A leaf spring body, wherein the leaf spring body is arranged below the longitudinal beam of the frame, and both ends of the leaf spring body are respectively connected to the longitudinal beam of the frame; at least one positioning member, one end of the positioning member is connected to the leaf spring body, the other end of the positioning member extends in a direction away from the leaf spring body, and the other end of the positioning member is suitable for fitting in the positioning hole of the axle assembly; Wherein, the other end of the positioning member has a first guide surface, the positioning hole has a second guide surface, and the first guide surface is in contact with the second guide surface.

2. The leaf spring for a vehicle according to claim 1, characterized in that: The positioning member comprises a connecting portion and a positioning portion connected to each other, the connecting portion is suitable for being connected to the frame longitudinal beam, and the positioning portion has the first guide surface; The outer diameter of the positioning portion gradually decreases in a direction away from the leaf spring body; The diameter of the positioning hole gradually decreases in a direction away from the leaf spring body.

3. The leaf spring for a vehicle according to claim 2, characterized in that: The minimum outer diameter of the positioning portion is smaller than the maximum aperture of the positioning hole, and the minimum outer diameter of the positioning portion is larger than the minimum aperture of the positioning hole.

4. The leaf spring for a vehicle according to claim 3, characterized in that: The minimum outer diameter of the positioning portion is D1, and the minimum aperture of the positioning hole is D2, wherein D1 and D2 satisfy: 0.5 mm<D1-D2<1.0 mm.

5. The leaf spring for a vehicle according to claim 2, characterized in that: The first guide surface extends along the circumference of the positioning portion, and the second guide surface extends along the circumference of the positioning hole.

6. The leaf spring for a vehicle according to claim 5, characterized in that: The angle between the first guide surface and the central axis of the positioning portion is ɑ, and the angle between the second guide surface and the central axis of the positioning hole is β, wherein ɑ and β satisfy: ɑ=β.

7. The leaf spring for a vehicle according to claim 2, characterized in that: The length of the positioning portion in the axial direction of the positioning member is less than or equal to the depth of the positioning hole.

8. The leaf spring for a vehicle according to any one of claims 2 to 7, characterized in that: An outer diameter of the positioning portion is greater than an outer diameter of the connecting portion.

9. The leaf spring for a vehicle according to claim 8, characterized in that: The connecting portion includes a first connecting section and a second connecting section connected to each other, the second connecting section is arranged between the first connecting section and the positioning portion, an external thread is formed on the first connecting section, and the first connecting section is threadedly connected to the frame longitudinal beam.

10. A vehicle, characterized in that: The invention comprises a leaf spring for a vehicle according to any one of claims 1 to 9.

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