CN210734293U

CN210734293U - Rear suspension pull rod and vehicle

Info

Publication number: CN210734293U
Application number: CN201921652911.7U
Authority: CN
Inventors: 李�雨
Original assignee: Beijing Electric Vehicle Co Ltd
Current assignee: Beijing Electric Vehicle Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-12
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a back suspension pull rod and vehicle, wherein the back suspension pull rod includes: sub vehicle frame connecting portion, back suspension connecting portion and plastics connecting rod portion. The plastic connecting rod part is connected between the auxiliary frame connecting part and the rear suspension connecting part, and the plastic connecting rod part has a hollow structure. This back suspension pull rod is through setting up plastics connecting rod portion for the working of plastics of the energy-absorbing of collapsing and set up hollow structure in it to make plastics connecting rod portion can collapse and absorb partly impact energy when the vehicle receives the striking, with the personnel in protection driver's cabin and the driver's cabin, and then effectively promote the security of driver's cabin.

Description

Rear suspension pull rod and vehicle

Technical Field

The utility model relates to a vehicle technical field particularly, relates to a back suspension pull rod and vehicle.

Background

The traditional rear suspension pull rod is made of hard structures such as metal, so that the rear suspension pull rod cannot collapse and absorb energy in vehicle collision, most of impact energy can be transmitted to a cab, the deformation of the cab is large, the safety of a driver is critical, the safety of the cab is low, and an improved space exists.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, the utility model provides a rear suspension pull rod, this rear suspension pull rod can crumple and absorb partly impact energy when the vehicle receives the striking to effectively protect personnel in driver's cabin and the driver's cabin, and then effectively promote the security of driver's cabin.

The utility model also provides a vehicle of having above-mentioned rear suspension pull rod.

According to the utility model discloses a rear suspension pull rod of embodiment, include: an auxiliary frame connecting part and a rear suspension connecting part; and the plastic connecting rod part is connected between the auxiliary frame connecting part and the rear suspension connecting part and has a hollow structure.

According to the utility model discloses a back suspension pull rod, this back suspension pull rod through set up plastics connecting rod portion for the plastic part structure of the energy absorption of bursting and set up hollow structure in it, so that plastics connecting rod portion can burst when the vehicle receives the striking and contract and absorb partly striking energy, with the personnel in effective protection driver's cabin and the driver's cabin, and then effectively promote the security of driver's cabin.

In addition, according to utility model embodiment's rear suspension pull rod, can also have following additional technical characterstic:

according to some embodiments of the present invention, the auxiliary frame connecting portion and the rear suspension connecting portion are connected to both ends of the plastic link portion, respectively, and the longitudinal sectional area of the middle portion of the plastic link portion is larger than the longitudinal sectional area of both end portions of the plastic link portion.

According to some embodiments of the invention, the plastic link portion gradually decreases in longitudinal cross-sectional area from the intermediate portion to the end portions.

According to some embodiments of the invention, the hollow structure comprises: and the through cavity transversely penetrates through two ends of the plastic connecting rod part.

According to some embodiments of the present invention, the inner wall of the plastic link portion has a plurality of first reinforcement grooves which are outwardly recessed, and the outer wall of the plastic link portion has a plurality of second reinforcement grooves which are inwardly recessed.

According to some embodiments of the present invention, the first reinforcing groove extends in the lateral direction and penetrates both ends of the plastic link portion, and the second reinforcing groove extends in the lateral direction and penetrates both ends of the plastic link portion.

According to some embodiments of the present invention, the first reinforcement groove is a plurality of and the second reinforcement groove is a plurality of.

According to the utility model discloses a some embodiments, sub vehicle frame connecting portion have first stiff end, back suspension connecting portion have the second stiff end, first stiff end is provided with along circumference distribution and a plurality of first spacing archs of evagination, the second stiff end is provided with along circumference distribution and a plurality of second spacing archs of evagination, first spacing arch with the spacing arch of second respectively with first stiffening groove cooperation is spacing.

According to some embodiments of the invention, the rear suspension connecting portion has a rear suspension bush, the rear suspension bush includes: the damping bushing comprises an inner bushing, an outer bushing and a bushing connecting portion connected between the inner bushing and the outer bushing, wherein the bushing connecting portion is provided with hollowed damping holes which are distributed at equal intervals along the circumferential direction.

According to another aspect of the present invention, a vehicle comprises the rear suspension link described above.

Drawings

Fig. 1 is a schematic structural view of a rear suspension stay according to an embodiment of the present invention;

fig. 2 is an exploded view of a rear suspension drawbar according to an embodiment of the present invention;

fig. 3 is a schematic structural view of the rear suspension link according to the embodiment of the present invention assembled between the sub-frame and the rear suspension link bracket;

fig. 4 is a schematic structural view of a plastic link portion according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of a plastic link portion according to an embodiment of the present invention;

fig. 6 is a schematic structural view of an auxiliary frame connecting portion according to an embodiment of the present invention;

fig. 7 is a partial schematic structure view of a rear suspension connection according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a rear suspension bushing according to an embodiment of the present invention.

Reference numerals:

rear suspension pull rod 100, sub vehicle frame connecting portion 1, rear suspension connecting portion 2, plastics connecting rod portion 3, hollow structure 4, through chamber 41, first stiffening groove 31, second stiffening groove 32, first stiff end 11, second stiff end 21, first spacing arch 111, second spacing arch 211, rear suspension bush 22, interior bush 221, outer bush 222, bush connecting portion 223, fretwork damping hole 2231, sub vehicle frame 200, rear suspension pull rod support 300.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

A rear suspension stay 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 8.

According to the utility model discloses rear suspension pull rod 100 can include: subframe connecting portion 1, rear suspension connecting portion 2 and plastic link portion 3.

As shown in fig. 1 to 4, the subframe connecting portion 1 and the rear suspension large bushing are fixed by bolts, the rear suspension large bushing is press-fitted into the subframe 200 to connect the rear suspension rod 100 to the subframe 200, the rear suspension connecting portion 2 and the rear suspension rod bracket 300 are connected by bolts, the rear suspension rod bracket 300 is adapted to be connected to the rear suspension to connect the rear suspension rod 100 to the rear suspension, and the plastic link portion 3 is connected between the subframe connecting portion 1 and the rear suspension connecting portion 2 to connect the subframe connecting portion 1 and the rear suspension connecting portion 2 together to connect the subframe 200 to the rear suspension.

The plastic connecting rod portion 3 is a plastic member, which can satisfy certain rigidity and hardness required for connecting and supporting the auxiliary frame 200 and the rear suspension, and has certain flexibility to bear certain deformation so as to facilitate the collapse and energy absorption of the plastic connecting rod portion 3 and further facilitate the protection of people in the cab.

Preferably, the plastic link part 3 may be a nylon link. Therefore, the crumple energy absorption effect is better, the weight is lower, and the light weight of the whole vehicle is facilitated.

Because the connecting rod portion in the traditional rear suspension pull rod is of a hard structure such as metal, the connecting rod portion cannot collapse and absorb energy in vehicle collision, the deformation of a cab is large, and the safety of a driver is endangered.

Therefore, the embodiment of the utility model provides a set up plastics connecting rod portion 3 into the working of plastics so that the energy-absorbing of collapsing to when the vehicle received the striking, plastics connecting rod portion 3 can receive the compression and collapse, with the striking energy of absorption partly, makes still less striking energy transfer driver's cabin department, and then the effectual deflection that has reduced the driver's cabin, with effectual protection driver's cabin interior personnel's safety.

Furthermore, the plastic connecting rod part 3 is provided with a hollow structure 4, and the hollow structure 4 can greatly improve the energy absorption of the plastic connecting rod part 3. Therefore, the energy absorption effect of the plastic connecting rod part 3 can be further improved, so that the plastic connecting rod part 3 can absorb more impact energy, and the safety of a cab and personnel in the cab is further ensured.

According to the utility model discloses rear suspension pull rod 100, this rear suspension pull rod 100 is through setting up plastics connecting rod portion 3 to working of plastics structure and set up hollow structure 4 in it to make plastics connecting rod portion 3 can crumple and absorb partly impact energy when the vehicle receives the striking, with the personnel in effective protection driver's cabin and the driver's cabin, and then effectively promote the security of driver's cabin.

In conjunction with the embodiments shown in fig. 1 to 4, the subframe link portion 1 and the rear suspension link portion 2 are connected to both ends of the plastic link portion 3, respectively, and the longitudinal sectional area of the middle portion of the plastic link portion 3 is larger than the longitudinal sectional area of both end portions of the plastic link portion 3. That is, the middle part of the plastic link part 3 is thicker than the end part, and the hollow structure 4 is arranged in the middle part, so that the middle part of the plastic link part 3 is easier to collapse and can absorb more energy, and further less impact energy is transmitted to the cab, so as to effectively protect the cab and people in the cab.

Further, referring to fig. 1 to 4, the plastic link portion 3 gradually decreases in longitudinal sectional area from the middle portion to both end portions. When the vehicle is impacted, the two end parts can be compressed towards the middle part under the action of the impact force, so that the plastic connecting rod part 3 is set to be in a mode of gradually reducing the thickness from the middle part to the two ends, the collapse energy absorption of the plastic connecting rod part 3 is more convenient, and the energy absorption effect is further improved.

As shown in fig. 5, the hollow structure 4 includes: and a through cavity 41, wherein the through cavity 41 transversely penetrates through two ends of the plastic connecting rod part 3. Therefore, the plastic connecting rod part 3 is more convenient to collapse and absorb energy, and the through cavity 41 penetrates through the two ends of the plastic connecting rod part 3, so that the energy absorption cavity is larger, the plastic connecting rod part 3 can absorb more energy, and a cab and personnel in the cab are further effectively protected.

In conjunction with the embodiment shown in fig. 4 and 5, the inner wall of the plastic link part 3 has a plurality of first reinforcing grooves 31 recessed outward, and the outer wall of the plastic link part 3 has a plurality of second reinforcing grooves 32 recessed inward. The provision of the first reinforcement groove 31 and the second reinforcement groove 32 increases the strength of the plastic link portion 3 to some extent, so that it can secure the minimum connection strength required between the subframe 200 and the rear suspension to secure stable operation of the vehicle.

Further, referring to fig. 4, the first reinforcing groove 31 extends in the transverse direction and penetrates both ends of the plastic link portion 3, and the second reinforcing groove 32 extends in the transverse direction and penetrates both ends of the plastic link portion 3. Therefore, the connection part can be more convenient to collapse and absorb energy.

Referring to fig. 5, a plurality of first reinforcing grooves 31 and a plurality of second reinforcing grooves 32 are provided to face each other in the circumferential direction. This effectively increases the strength of the plastic link portion 3.

In conjunction with the embodiments shown in fig. 2, 4, 6 and 7, the subframe connecting portion 1 has a first fixing end 11, the rear suspension connecting portion 2 has a second fixing end 21, and the first fixing end 11 and the second fixing end 21 are adapted to be fixed to both ends of the plastic link portion 3, respectively. Specifically, when the rear suspension link 100 is manufactured, the subframe connecting portion 1 and the rear suspension connecting portion 2 may be placed in an injection mold, and the first fixing end 11 and the second fixing end 21 on the subframe connecting portion 1 and the rear suspension connecting portion 2 are integrally connected with the plastic link portion 3 of nylon through an injection molding process. From this, can guarantee the bulk strength of rear suspension connecting portion 2 to can avoid setting up solitary mounting, with the whole weight of effectively reducing rear suspension connecting portion 2, with the purpose that realizes whole car lightweight.

Further, first stiff end 11 is provided with along circumference distribution and a plurality of first spacing archs 111 of evagination, second stiff end 21 is provided with along circumference distribution and a plurality of second spacing archs 211 of evagination, first spacing archs 111 and the structure of second spacing archs 211 constitution approximate spline promptly, wherein, first spacing archs 111 and second spacing archs 211 cooperate spacingly with first reinforcing groove 31 respectively, in order to avoid plastic connecting rod portion 3 for sub vehicle

frame connecting portion

1 and 2 circumferential direction of rear suspension connecting portion, in order to further promote the connection stability between sub vehicle frame connecting portion 1 and rear suspension connecting portion 2 and plastic connecting rod portion 3, and then can make rear suspension pull rod 100's overall stability better.

As shown in fig. 2 and 8, the rear suspension connecting portion 2 has a rear suspension bushing 22, and the rear suspension bushing 22 includes: an inner bushing 221, an outer bushing 222, and a bushing connecting portion 223 connected between the inner bushing 221 and the outer bushing 222, wherein the bushing connecting portion 223 may be a rubber bushing to have a certain flexibility, and the inner bushing 221, the outer bushing 222, and the bushing connecting portion 223 may be vulcanization-connected together to secure the overall strength of the aft suspension bushing 22.

Further, the bushing connecting portion 223 has hollowed-out damping holes 2231 distributed at equal intervals in the circumferential direction. The hollowed-out damping hole 2231 penetrates the bushing connecting portion 223 in the thickness direction. The number of the hollowed-out damping holes 2231 is three, and the hollowed-out damping holes 2231 are uniformly distributed around the center of the bushing at 120 degrees, and the radial size of the hollowed-out damping holes 2231 is 2 mm. From this, can effectively increase the damping effect of rear suspension bush 22 through setting up fretwork damping hole 2231 to play effectual shockproof effect, with the production of noise reduction, and then the NVH performance of effectual promotion vehicle.

According to another aspect of the present invention, the vehicle includes the rear suspension link 100 described in the above embodiments. Other configurations of the vehicle, such as transmissions, braking systems, steering systems, etc., are known in the art and well known to those skilled in the art, and therefore will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A rear suspension stay (100), comprising:

an auxiliary frame connecting part (1) and a rear suspension connecting part (2);

the plastic connecting rod part (3) is connected between the auxiliary frame connecting part (1) and the rear suspension connecting part (2), and the plastic connecting rod part (3) is provided with a hollow structure (4).

2. The rear suspension link (100) according to claim 1, wherein the subframe link (1) and the rear suspension link (2) are connected to both ends of the plastic link portion (3), respectively, and a longitudinal sectional area of a middle portion of the plastic link portion (3) is larger than a longitudinal sectional area of both end portions of the plastic link portion (3).

3. A rear suspension stay (100) according to claim 2, characterized in that the plastic link part (3) is gradually reduced in longitudinal cross-sectional area from the middle part to the end parts.

4. A rear suspension stay (100) according to claim 1, characterized in that the hollow structure (4) comprises: and the through cavity (41) transversely penetrates through two ends of the plastic connecting rod part (3).

5. A rear suspension stay (100) according to claim 1, wherein the inner wall of the plastic link part (3) has a plurality of first reinforcement grooves (31) recessed outward, and the outer wall of the plastic link part (3) has a plurality of second reinforcement grooves (32) recessed inward.

6. A rear suspension stay (100) according to claim 5, wherein the first reinforcement groove (31) extends in the lateral direction and penetrates both ends of the plastic link part (3), and the second reinforcement groove (32) extends in the lateral direction and penetrates both ends of the plastic link part (3).

7. A rear suspension stay (100) according to claim 6, wherein a plurality of the first reinforcement grooves (31) and a plurality of the second reinforcement grooves (32) are provided diametrically opposite to each other in the circumferential direction.

8. The rear suspension stay (100) of claim 5, wherein the subframe connecting portion (1) has a first fixed end (11), the rear suspension connecting portion (2) has a second fixed end (21), the first fixed end (11) is provided with a plurality of first limiting protrusions (111) which are distributed along the circumferential direction and protrude outward, the second fixed end (21) is provided with a plurality of second limiting protrusions (211) which are distributed along the circumferential direction and protrude outward, and the first limiting protrusions (111) and the second limiting protrusions (211) are respectively matched with the first reinforcing grooves (31) for limitation.

9. Rear suspension stay (100) according to claim 1, characterized in that the rear suspension connection (2) has a rear suspension bushing (22), the rear suspension bushing (22) comprising: the damping device comprises an inner bushing (221), an outer bushing (222) and a bushing connecting part (223) connected between the inner bushing (221) and the outer bushing (222), wherein the bushing connecting part (223) is provided with hollowed damping holes (2231) which are distributed at equal intervals along the circumferential direction.

10. A vehicle, characterized by comprising a rear suspension stay (100) according to any one of claims 1-9.