Suspension of a vehicle and vehicle

Abstract

The application discloses a kind of suspension of vehicle and vehicle, and the suspension of vehicle includes: axle housing;Single piece spring, the installation part of the single piece spring is configured as solid cylinder;Leaf spring seat, the upper leaf spring seat, middle leaf spring seat and lower leaf spring seat of the leaf spring seat are respectively arranged on the upper and lower sides of the axle housing, and the middle leaf spring seat and the lower leaf spring seat are respectively arranged on the upper and lower sides of the installation part, and the upper leaf spring seat, the middle leaf spring seat and the lower leaf spring seat are fixedly connected.The installation part is configured as solid cylinder, so that the structural strength of installation part can be guaranteed, and the single piece spring is not easy to be damaged, and when the installation part is twisted, the single piece spring and the axle housing can be connected to avoid the local diagonal stress of the front end of the single piece spring, so that the service life of the single piece spring can be prolonged.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a vehicle suspension and a vehicle. Background Technology

[0002] Most existing vehicle single-leaf spring suspensions use rectangular single-leaf springs. During vehicle operation, uneven road surfaces cause twisting, and the rectangular single-leaf spring at the front end of the drive axle mounting point experiences high diagonal stress. Repeated loading can easily lead to breakage. In addition, most single-leaf spring suspensions are fixed by using multiple bolts and nuts, but this method has significant limitations. When installed on a vehicle, the bolts are pre-tightened with a large pre-tightening force. During vehicle operation, road bumps cause stress concentration points in the single-leaf spring suspension to crack. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a vehicle suspension that can avoid the situation of large local diagonal stress at the front end of the connection between the single leaf spring and the axle housing, can disperse local stress, and extend the service life of the single leaf spring.

[0004] The present invention further proposes a vehicle.

[0005] The vehicle suspension according to the present invention includes: an axle housing; a single leaf spring, the single leaf spring including: a mounting portion, the mounting portion being constructed as a solid cylinder; and a leaf spring seat, the leaf spring seat including: an upper leaf spring seat, a middle leaf spring seat, and a lower leaf spring seat, the upper leaf spring seat and the middle leaf spring seat being respectively disposed on the upper and lower sides of the axle housing, the middle leaf spring seat and the lower leaf spring seat being respectively disposed on the upper and lower sides of the mounting portion, and the upper leaf spring seat, the middle leaf spring seat, and the lower leaf spring seat being fixedly connected.

[0006] According to the vehicle suspension of the present invention, the mounting part is constructed as a solid cylinder. This not only ensures the structural strength of the mounting part and makes the single leaf spring less susceptible to damage, but also, due to the cylindrical shape of the mounting part, avoids the situation of large local diagonal stress at the front end of the connection between the single leaf spring and the axle housing when the mounting part is twisted, thus dispersing local stress and extending the service life of the single leaf spring.

[0007] In some examples of the present invention, both the middle leaf spring seat and the lower leaf spring seat are provided with arc-shaped mating parts, which respectively mate with the upper and lower sides of the mounting part.

[0008] In some examples of the present invention, a first limiting part is provided on the upper side of the mounting part, a second limiting part is provided on the lower side of the mounting part, a third limiting part is provided on the lower side of the middle leaf spring seat, and a fourth limiting part is provided on the upper side of the lower leaf spring seat. The first limiting part and the third limiting part are mutually limiting and engaged, and the second limiting part on the lower side is mutually limiting and engaged with the fourth limiting part.

[0009] In some examples of the present invention, one of the first limiting part and the third limiting part is a protrusion and the other is a groove, and one of the second limiting part and the fourth limiting part is a protrusion and the other is a groove; or the first limiting part and the third limiting part are both blind holes, and the two ends of the positioning pin respectively cooperate with the two blind holes, and the second limiting part and the fourth limiting part are both blind holes, and the two ends of the positioning pin respectively cooperate with the two blind holes.

[0010] In some examples of the present invention, the bridge housing is provided with a fifth limiting part on both the front and rear sides and a sixth limiting part on both the upper and lower sides, the upper leaf spring seat is provided with a seventh limiting part on both the front and rear sides and an eighth limiting part on the lower side, the fifth limiting part and the seventh limiting part are correspondingly limited and engaged, and the sixth limiting part on the upper side of the bridge housing is limited and engaged with the eighth limiting part.

[0011] In some examples of the present invention, a ninth limiting part is provided on the upper side of the middle leaf spring seat, and the sixth limiting part on the lower side of the bridge housing is in a limiting engagement with the ninth limiting part.

[0012] In some examples of the present invention, the vehicle suspension further includes: a first vibration damping pad and a second vibration damping pad, wherein the first vibration damping pad is disposed between the upper leaf spring seat and the axle housing and respectively engages with the sixth limiting portion and the eighth limiting portion on the upper side of the axle housing; the second vibration damping pad is disposed between the middle leaf spring seat and the axle housing and respectively engages with the sixth limiting portion and the ninth limiting portion on the lower side of the axle housing; and / or further includes: a third vibration damping pad and a fourth vibration damping pad, wherein the third vibration damping pad is disposed between the middle leaf spring seat and the mounting portion and respectively engages with the first limiting portion and the third limiting portion; and the fourth vibration damping pad is disposed between the lower leaf spring seat and the mounting portion and respectively engages with the second limiting portion and the fourth limiting portion.

[0013] In some examples of the invention, the vehicle suspension further includes fasteners that pass through the upper leaf spring seat, the middle leaf spring seat, and the lower leaf spring seat to secure the axle housing and the single leaf spring.

[0014] In some examples of the present invention, the vehicle suspension further includes a fifth vibration damping pad disposed between the lower leaf spring seat and the fastener.

[0015] The vehicle according to the present invention includes: the suspension of the vehicle described above.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the suspension structure according to an embodiment of the present invention;

[0019] Figure 2 This is an exploded view of the suspension according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the bridge shell structure;

[0021] Figure 4 This is a schematic diagram of a single-leaf spring;

[0022] Figure 5 This is a schematic diagram of the upper leaf spring seat;

[0023] Figure 6 This is a schematic diagram of the middle leaf spring seat;

[0024] Figure 7 This is a schematic diagram of the lower leaf spring seat.

[0025] Figure label:

[0026] 1. Suspension;

[0027] 10. Bridge housing; 11. Fifth limiting part; 12. Sixth limiting part; 20. Single leaf spring; 21. Mounting part; 210. First limiting part; 211. Second limiting part; 30. Leaf spring seat; 31. Upper leaf spring seat; 310. Seventh limiting part; 311. Eighth limiting part; 32. Middle leaf spring seat; 320. Third limiting part; 321. Ninth limiting part; 33. Lower leaf spring seat; 330. Fourth limiting part; 34. Arc-shaped mating part; 40. First vibration isolation pad; 50. Second vibration isolation pad; 60. Third vibration isolation pad; 70. Fourth vibration isolation pad; 80. Fastener; 90. Fifth vibration isolation pad. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0029] The following is for reference. Figures 1-7The suspension 1 of a vehicle according to an embodiment of the present invention is described.

[0030] like Figure 1 As shown, the vehicle suspension 1 according to an embodiment of the present invention includes: an axle housing 10, a single-leaf spring 20, and a leaf spring seat 30. The axle housing 10 is the housing part of the drive axle and serves to install and fix it. The single-leaf spring 20 is a steel leaf spring mounted on the suspension 1, which has advantages such as lighter weight and no interleaf friction compared to other multi-leaf springs. The leaf spring seat 30 serves to install and fix the axle housing 10 and the single-leaf spring 20 together. One end of the single-leaf spring 20 is a straight plate end, serving as the airbag mounting surface, and the other end is a coiled end. The single-leaf spring 20 has a through hole for installing the airbag on the airbag mounting surface.

[0031] like Figure 2 and Figure 4 As shown, the single leaf spring 20 includes a mounting part 21, which serves to install and fix the spring. The leaf spring seat 30 includes an upper leaf spring seat 31, a middle leaf spring seat 32, and a lower leaf spring seat 33. The upper leaf spring seat 31 and the middle leaf spring seat 32 are respectively disposed on the upper and lower sides of the bridge housing 10, and the middle leaf spring seat 32 and the lower leaf spring seat 33 are respectively disposed on the upper and lower sides of the mounting part 21. The upper leaf spring seat 31, the middle leaf spring seat 32, and the lower leaf spring seat 33 are fixedly connected, which can simultaneously fix the positions of the bridge housing 10 and the single leaf spring 20, thereby ensuring the stability and reliability of the connection between the bridge housing 10 and the single leaf spring 20.

[0032] like Figure 4 As shown, the mounting part 21 is constructed as a solid cylinder. Understandably, on bumpy roads, the single-leaf spring 20 and the axle housing 10 may twist under the action of force. Constructing the mounting part 21 as a solid cylinder ensures its structural strength, making the single-leaf spring 20 less susceptible to damage. Furthermore, when twisting, the cylindrical shape of the mounting part 21 prevents large local diagonal stress at the connection point between the single-leaf spring 20 and the axle housing 10, thus dispersing local stress and extending the service life of the single-leaf spring 20.

[0033] Among them, such as Figure 2 , Figure 6 and Figure 7As shown, both the middle leaf spring seat 32 and the lower leaf spring seat 33 are provided with arc-shaped mating parts 34, which respectively mate with the upper and lower sides of the mounting part 21. The arc-shaped mating parts 34 on the middle leaf spring seat 32 allow for better mating with the upper side of the solid cylindrical mounting part 21. Similarly, the arc-shaped mating parts 34 on the lower leaf spring seat 33 allow for better mating with the lower side of the solid cylindrical mounting part 21. This improves the installation and fixation effect of the middle leaf spring seat 32 and the lower leaf spring seat 33 with the mounting part 21, enhancing the stability and reliability of the connection between the middle leaf spring seat 32 and the lower leaf spring seat 33 and the mounting part 21.

[0034] Of course, such as Figure 4 , Figure 6 and Figure 7 As shown, a first limiting part 210 is provided on the upper side of the mounting part 21, a second limiting part 211 is provided on the lower side of the mounting part 21, a third limiting part 320 is provided on the lower side of the middle leaf spring seat 32, and a fourth limiting part 330 is provided on the upper side of the lower leaf spring seat 33. The first limiting part 210 and the third limiting part 320 are mutually limiting and cooperating, and the second limiting part 211 and the fourth limiting part 330 are mutually limiting and cooperating. A first limiting part 210 and a second limiting part 211 are respectively provided on the upper and lower sides of the mounting part 21, and a third limiting part 320 is provided on the lower side of the middle leaf spring seat 32. Thus, the first limiting part 210 can cooperate with the third limiting part 320 to fix the position between the mounting part 21 and the middle leaf spring seat 32, thereby further improving the stability and reliability of the connection between the mounting part 21 and the middle leaf spring seat 32. Similarly, the second limiting part 211 can cooperate with the fourth limiting part 330 to fix the position between the mounting part 21 and the lower leaf spring seat 33, thereby further improving the stability and reliability of the connection between the mounting part 21 and the lower leaf spring seat 33. The structures of the first limiting part 210 and the second limiting part 211 can be the same or different.

[0035] It should be noted that, as Figure 4 , Figure 6 and Figure 7 As shown, one of the first limiting part 210 and the third limiting part 320 is a protrusion, and the other of the first limiting part 210 and the third limiting part 320 is a groove; one of the second limiting part 211 and the fourth limiting part 330 is a protrusion, and the other of the second limiting part 211 and the fourth limiting part 330 is a groove; or the first limiting part 210 and the third limiting part 320 are both blind holes, and the two ends of the positioning pin respectively cooperate with the two blind holes; and the second limiting part 211 and the fourth limiting part 330 are both blind holes, and the two ends of the positioning pin respectively cooperate with the two blind holes.

[0036] One of the first limiting part 210 and the third limiting part 320 can be a protrusion, and the other can be a groove. For example, the first limiting part 210 is a groove and the third limiting part 320 is a protrusion. The protrusion can fit into the groove. Similarly, one of the second limiting part 211 and the fourth limiting part 330 can be a protrusion and the other can be a groove. For example, the second limiting part 211 is a groove and the fourth limiting part 330 is a protrusion. The protrusion can fit into the groove. The structure of the protrusion and the groove is simple and easy to manufacture. Moreover, the limiting fit of the protrusion and the groove is simpler and more convenient, which can improve assembly efficiency.

[0037] Alternatively, the first limiting part 210 and the third limiting part 320 are both blind holes, and the two ends of the positioning pin respectively mate with the two blind holes. Similarly, the second limiting part 211 and the fourth limiting part 330 are both blind holes, and the two ends of the positioning pin respectively mate with the two blind holes. It should be noted that the positioning pin is a cylindrical pin with chamfered ends. During installation, the two ends can be respectively assembled into the corresponding two blind holes. The material of the positioning pin can be distinguished from other parts connected to it. Appropriate materials can be selected as needed to ensure connection quality while saving costs. Moreover, considering the wear during structural processing and the possibility of damage due to stress concentration at the root, the reliability of the connection is avoided. In addition, the assembly of the positioning pin is relatively common and easy to design, assemble and maintain. Of course, the fit between the positioning pin and the blind hole is also more secure and stable, improving the stability of the connection between the mounting part 21 and the middle leaf spring seat 32 and the lower leaf spring seat 33.

[0038] In addition, such as Figure 3 and Figure 5 As shown, a fifth limiting part 11 is provided on both the front and rear sides of the bridge housing 10, and a sixth limiting part 12 is provided on both the upper and lower sides of the bridge housing 10. A seventh limiting part 310 is provided on both the front and rear sides of the upper leaf spring seat 31, and an eighth limiting part 311 is provided on the lower side of the upper leaf spring seat 31. The fifth limiting part 11 and the seventh limiting part 310 are correspondingly limited and engaged, and the sixth limiting part 12 on the upper side of the bridge housing 10 is limited and engaged with the eighth limiting part 311.

[0039] A fifth limiting part 11 is provided on both the front and rear sides of the bridge housing 10, and a seventh limiting part 310 is provided on both the front and rear sides of the upper leaf spring seat 31. In this way, the fifth limiting part 11 and the seventh limiting part 310 can be correspondingly limited and cooperated to limit the position of the upper leaf spring seat 31 and the bridge housing 10 in the front-rear direction. At the same time, a sixth limiting part 12 is provided on both the upper and lower sides of the bridge housing 10, and an eighth limiting part 311 is provided on the lower side of the upper leaf spring seat 31. The sixth limiting part 12 on the upper side of the bridge housing 10 can be limited and cooperated with the eighth limiting part 311, so that the position of the upper leaf spring seat 31 and the bridge housing 10 can be limited in the upper-lower direction. This can effectively ensure the limiting effect of the upper leaf spring seat 31 and the bridge housing 10.

[0040] Furthermore, such as Figure 3 and Figure 6 As shown, a ninth limiting part 321 is provided on the upper side of the middle leaf spring seat 32, and the sixth limiting part 12 on the lower side of the axle housing 10 is in a limiting engagement with the ninth limiting part 321. The ninth limiting part 321 on the upper side of the middle leaf spring seat 32 allows the sixth limiting part 12 on the lower side of the axle housing 10 to engage with the ninth limiting part 321, thereby limiting the position between the axle housing 10 and the middle leaf spring seat 32 and improving the stability of the connection between them.

[0041] According to an optional embodiment of the present invention, such as Figure 2 As shown, the vehicle's suspension 1 also includes: a first vibration damping pad 40 and a second vibration damping pad 50. The first vibration damping pad 40 is disposed between the upper leaf spring seat 31 and the axle housing 10, and the first vibration damping pad 40 is respectively limited and engaged with the sixth limiting part 12 and the eighth limiting part 311 on the upper side of the axle housing 10. The second vibration damping pad 50 is disposed between the middle leaf spring seat 32 and the axle housing 10, and the second vibration damping pad 50 is respectively limited and engaged with the sixth limiting part 12 and the ninth limiting part 321 on the lower side of the axle housing 10.

[0042] Both the first vibration isolation pad 40 and the second vibration isolation pad 50 can play a role in vibration isolation. The first vibration isolation pad 40 is placed between the upper leaf spring seat 31 and the bridge housing 10, which can reduce the vibration between the upper leaf spring seat 31 and the bridge housing 10. The first vibration isolation pad 40 is respectively limited and engaged with the sixth limiting part 12 and the eighth limiting part 311 on the upper side of the bridge housing 10. For example, the first vibration isolation pad 40 is provided with a clearance hole, and the sixth limiting part 12 on the upper side of the bridge housing 10 can pass through the clearance hole and engage with the eighth limiting part 311. This setting is simple and convenient, and can make the setting of the first vibration isolation pad 40 more firm and stable. Similarly, the second vibration isolation pad 50 is placed between the middle leaf spring seat 32 and the bridge housing 10, which can reduce the vibration between the middle leaf spring seat 32 and the bridge housing 10. The second vibration isolation pad 50 is respectively limited and engaged with the sixth limiting part 12 and the ninth limiting part 321 on the lower side of the bridge housing 10. For example, the second vibration isolation pad 50 is provided with a clearance hole, and the sixth limiting part 12 on the lower side of the bridge housing 10 can pass through the clearance hole and engage with the ninth limiting part 321. This setting is simple and convenient, and can make the setting of the second vibration isolation pad 50 more firm and stable.

[0043] In addition, such as Figure 2 As shown, the vehicle's suspension 1 also includes a third vibration damping pad 60 and a fourth vibration damping pad 70. The third vibration damping pad 60 is disposed between the middle leaf spring seat 32 and the mounting part 21, and the third vibration damping pad 60 is respectively limited and cooperated with the first limiting part 210 and the third limiting part 320. The fourth vibration damping pad 70 is disposed between the lower leaf spring seat 33 and the mounting part 21, and the fourth vibration damping pad 70 is respectively limited and cooperated with the second limiting part 211 and the fourth limiting part 330.

[0044] Both the third vibration isolation pad 60 and the fourth vibration isolation pad 70 can serve as vibration isolation pads. The third vibration isolation pad 60 is placed between the middle leaf spring seat 32 and the mounting part 21, which can reduce the vibration between the middle leaf spring seat 32 and the mounting part 21. The third vibration isolation pad 60 is respectively limited and engaged with the first limiting part 210 and the third limiting part 320. For example, the third vibration isolation pad 60 is provided with a clearance hole, and the first limiting part 210 can pass through the clearance hole and engage with the third limiting part 320. This setting is simple and convenient, and can make the setting of the third vibration isolation pad 60 more secure and stable. Similarly, the fourth vibration isolation pad 70 is placed between the lower leaf spring seat 33 and the mounting part 21, which can reduce the vibration between the lower leaf spring seat 33 and the mounting part 21. The fourth vibration isolation pad 70 is respectively limited and engaged with the second limiting part 211 and the fourth limiting part 330. For example, the fourth vibration isolation pad 70 is provided with a clearance hole, and the second limiting part 211 can pass through the clearance hole and engage with the fourth limiting part 330. This setting is simple and convenient, and can make the setting of the fourth vibration isolation pad 70 more secure and stable.

[0045] Optionally, such as Figure 2 As shown, the vehicle's suspension 1 also includes a fastener 80, which passes through the upper leaf spring seat 31, the middle leaf spring seat 32, and the lower leaf spring seat 33 to fix the axle housing 10 and the single leaf spring 20. The fastener 80 has a tightening function. By passing through the upper leaf spring seat 31, the middle leaf spring seat 32, and the lower leaf spring seat 33, the fastener 80 can fix the upper leaf spring seat 31, the axle housing 10, the middle leaf spring seat 32, the single leaf spring 20, and the lower leaf spring seat 33 together. At the same time, through the limiting effect between the upper leaf spring seat 31, the axle housing 10, the middle leaf spring seat 32, the single leaf spring 20, and the lower leaf spring seat 33, the connection between the axle housing 10 and the single leaf spring 20 can be made more stable and reliable. Moreover, this eliminates the need for welding between the axle housing 10 and the single leaf spring 20, avoiding the risk of breakage at the welded joints of the axle housing 10 and the single leaf spring 20 under complex road conditions.

[0046] In addition, such as Figure 2 As shown, the vehicle's suspension 1 also includes a fifth vibration damping pad 90, which is disposed between the lower leaf spring seat 33 and the fastener 80. The fifth vibration damping pad 90, located between the lower leaf spring seat 33 and the fastener 80, also serves to dampen vibrations, further reducing the vibrations generated by the suspension 1 during operation.

[0047] The vehicle according to an embodiment of the present invention includes: the suspension 1 of the vehicle described in the above embodiments.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0049] In the description of this invention, "first feature" and "second feature" may include one or more of the features. In the description of this invention, "a plurality of" means two or more. In the description of this invention, "above" or "below" the second feature may include direct contact between the first and second features, or it may include contact between the first and second features not being in direct contact but through another feature between them. In the description of this invention, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0050] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0051] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle suspension (1), characterized in that, include: Bridge shell (10); A single-leaf spring (20), the single-leaf spring (20) includes: a mounting part (21), the mounting part (21) being constructed as a solid cylinder; The leaf spring seat (30) includes an upper leaf spring seat (31), a middle leaf spring seat (32), and a lower leaf spring seat (33). The upper leaf spring seat (31) and the middle leaf spring seat (32) are respectively disposed on the upper and lower sides of the bridge housing (10). The middle leaf spring seat (32) and the lower leaf spring seat (33) are respectively disposed on the upper and lower sides of the mounting part (21). The upper leaf spring seat (31), the middle leaf spring seat (32), and the lower leaf spring seat (33) are fixedly connected. The bridge housing (10) is provided with a fifth limiting part (11) on both the front and rear sides and a sixth limiting part (12) on both the upper and lower sides. The upper leaf spring seat (31) is provided with a seventh limiting part (310) on both the front and rear sides and an eighth limiting part (311) on the lower side. The fifth limiting part (11) and the seventh limiting part (310) are correspondingly limited and engaged. The sixth limiting part (12) on the upper side of the bridge housing (10) is limited and engaged with the eighth limiting part (311). The upper side of the middle leaf spring seat (32) is provided with a ninth limiting part (321), and the sixth limiting part (12) on the lower side of the bridge housing (10) is in a limiting cooperation with the ninth limiting part (321); The vehicle suspension (1) further includes: a first vibration damping pad (40) and a second vibration damping pad (50). The first vibration damping pad (40) is disposed between the upper leaf spring seat (31) and the axle housing (10) and is respectively limited and engaged with the sixth limiting part (12) and the eighth limiting part (311) on the upper side of the axle housing (10). The second vibration damping pad (50) is disposed between the middle leaf spring seat (32) and the axle housing (10) and is respectively limited and engaged with the sixth limiting part (12) and the ninth limiting part (321) on the lower side of the axle housing (10).

2. The vehicle suspension (1) according to claim 1, characterized in that, Both the middle leaf spring seat (32) and the lower leaf spring seat (33) are provided with arc-shaped mating parts (34), which respectively mate with the upper and lower sides of the mounting part (21).

3. The suspension (1) of the vehicle according to claim 1, characterized in that, The mounting part (21) is provided with a first limiting part (210) on its upper side, a second limiting part (211) is provided on its lower side, a third limiting part (320) is provided on its lower side, and a fourth limiting part (330) is provided on its upper side. The first limiting part (210) and the third limiting part (320) are mutually limiting and engaged, and the second limiting part (211) and the fourth limiting part (330) are mutually limiting and engaged.

4. The suspension (1) of the vehicle according to claim 3, characterized in that, One of the first limiting part (210) and the third limiting part (320) is a protrusion and the other is a groove, and one of the second limiting part (211) and the fourth limiting part (330) is a protrusion and the other is a groove; or The first limiting part (210) and the third limiting part (320) are both blind holes, and the two ends of the positioning pin are respectively engaged with the two blind holes. The second limiting part (211) and the fourth limiting part (330) are both blind holes, and the two ends of the positioning pin are respectively engaged with the two blind holes.

5. The suspension (1) of the vehicle according to claim 3, characterized in that, Also includes: The third vibration isolation pad (60) and the fourth vibration isolation pad (70) are disposed between the middle leaf spring seat (32) and the mounting part (21) and respectively limit the first limiting part (210) and the third limiting part (320). The fourth vibration isolation pad (70) is disposed between the lower leaf spring seat (33) and the mounting part (21) and respectively limit the second limiting part (211) and the fourth limiting part (330).

6. The suspension (1) of the vehicle according to claim 1, characterized in that, Also includes: Fastener (80) passes through the upper leaf spring seat (31), the middle leaf spring seat (32) and the lower leaf spring seat (33) to fix the bridge housing (10) and the single leaf spring (20).

7. The suspension (1) of the vehicle according to claim 6, characterized in that, Also includes: The fifth vibration isolation pad (90) is disposed between the lower leaf spring seat (33) and the fastener (80).

8. A vehicle, characterized in that, include: The suspension (1) of the vehicle according to any one of claims 1-7.

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