CN216489998U - Suspension bush and motor suspension - Google Patents

Abstract

The utility model provides a suspension bushing and a motor suspension, the suspension bushing comprises an outer pipe, an inner core and a rubber body connected between the inner core and the outer pipe, wherein at least one end of the rubber body is provided with a plurality of grooves which are distributed at intervals along the circumferential direction of the rubber body. According to the suspension bushing, the groove arranged at least one end of the rubber body is beneficial to effectively reducing the suspension rigidity and regulating the rigidity ratio of the suspension bushing, so that both NVH performance and durability can be considered, and a better using effect is achieved.

Description

Suspension bush and motor suspension

Technical Field

The utility model relates to the technical field of power assemblies, in particular to a suspension bushing. The utility model also relates to a motor suspension with the suspension bushing.

Background

The motor suspension is used as a mounting structure of a motor in a new energy automobile, and the design of the motor suspension has important influence on the transmission of motor vibration and noise to an automobile body. The motor suspension with good performance can reduce the transmission of vibration and noise to the automobile body, improves the riding comfort of the automobile, and plays an important role in improving the quality of the automobile.

Among the prior art, the motor suspension structurally has the following problem: firstly, the suspension bushing is simple in structure, is not beneficial to adjusting the rigidity ratio of the suspension, and cannot give consideration to NVH performance and durability; secondly, the suspension limiting plate is thin in structure and poor in limiting capability, and the inner center of the bushing is required to protrude out of the surface; thirdly, the suspension bush has no anti-twisting structure in the assembling process, so that the colloid deforms in the assembling process.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a suspension bushing to facilitate adjustment of a stiffness ratio of the suspension bushing.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a suspension bush, includes outer tube, inner core, and connects the inner core with the rubber body between the outer tube, at least one end of the rubber body is equipped with the recess, just the recess is for following a plurality of the circumference interval distribution of the rubber body.

Compared with the prior art, the utility model has the following advantages:

the suspension bushing is beneficial to effectively reducing the suspension rigidity through the groove arranged at least one end of the rubber body, and the rigidity ratio of the suspension bushing can be adjusted through adjusting parameters such as the groove depth of the groove according to design requirements during production and manufacturing, so that the NVH performance and the durability can be considered, and the suspension bushing has a good using effect.

The utility model also provides a motor suspension, which comprises the suspension bushing, a motor support arm and a suspension limiting plate, wherein the motor support arm and the suspension limiting plate are respectively arranged at two ends of the suspension bushing, and the suspension limiting plate, the inner core and the motor support arm are fixedly connected together through a fastening assembly.

Further, the inner core is close to the one end of motor support arm have stretch out in the outer overhang portion of outside of tubes, be formed with the anti-rotating groove on the overhang portion, be formed with on the motor support arm and prevent changeing the lug, prevent changeing the lug and insert and establish in the anti-rotating groove.

Further, the suspension limiting plate includes the limiting plate body, the middle part of limiting plate body is equipped with the bulge, the bulge by limiting plate body self to inner core one side is bloated and is formed to along the direction of bloating, the bulge is the round platform form that the diameter gradually diminishes, just the suspension limiting plate passes through the bulge with the inner core links to each other.

Furthermore, a flange is formed at the edge of the limiting plate body, and the flange is turned over towards one side far away from the protruding part.

Furthermore, the limiting plate body is provided with reinforcing ribs which are respectively arranged on two groups of opposite sides of the protruding portion, and each group of reinforcing ribs are formed by extending one end of the limiting plate body in the length direction to the end portion of the protruding portion.

Further, a notch is formed at one end, close to the suspension limiting plate, of the inner core, and the protruding portion is at least partially embedded in the notch.

Furthermore, the limiting plate body is long, one end of the outer tube, which is close to the suspension limiting plate, is provided with a limiting flanging which is arranged in an outward-turning manner, the limiting flanging corresponds to the limiting plate body, the two opposite sides of the outer tube are respectively arranged, and the rubber body is provided with a limiting colloid which is covered on the surface of the limiting flanging.

Furthermore, the end part of the protruding part is provided with an assembly hole, the motor support arm is provided with a threaded hole, the fastening assembly adopts a bolt, and the bolt penetrates through the assembly hole and the inner core is connected in the threaded hole.

Further, be adjacent to the pilot hole, in the tip of bulge is equipped with the locating hole, the one end that the inner core is close to the suspension limiting plate is equipped with the location arch.

According to the motor suspension, the suspension bushing is applied, so that the suspension rigidity can be effectively reduced, the rigidity ratio of the suspension bushing is favorably adjusted, and the motor suspension has better NVH (noise, vibration and harshness) performance and durability.

In addition, through the cooperation of the anti-rotation groove and the anti-rotation lug, the installation of the inner core on the motor support arm can be facilitated, and the rotation of the inner core relative to the motor support arm can be effectively prevented. And, through setting up bulge and turn-ups on the suspension limiting plate, can improve the structural strength of motor suspension installation to can shorten the inner core length of suspension bush.

In addition, the recess is formed in the inner core so that the protrusion is at least partially inserted into the recess, thereby facilitating installation of the suspension limiting plate and shortening of the length of the inner core. And the spacing turn-ups that sets up on the outer tube and the spacing colloid of setting on spacing turn-ups for spacing colloid can with suspension limiting plate butt, and can reduce the noise transmission, improve the NVH performance.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of a suspension bushing according to an embodiment of the present invention;

FIG. 2 is a schematic structural view from another perspective of a suspension bushing according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a rubber body and an outer tube according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of an inner core according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of an alternative perspective of an inner core according to embodiments of the present invention;

fig. 6 is a schematic structural diagram of a motor suspension according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a suspension limiting plate according to an embodiment of the utility model;

fig. 8 is a schematic structural diagram of another view of the suspension limiting plate according to the embodiment of the utility model;

FIG. 9 is a schematic structural diagram of a motor arm according to an embodiment of the present invention;

description of reference numerals:

1. a suspension bushing; 2. a motor support arm; 3. suspending a limiting plate; 4. a fastening assembly;

101. an outer tube; 102. an inner core; 1021. a guide surface; 1022. an anti-rotation slot; 1023. a recess; 1025. positioning the projection; 103. a rubber body; 1031. a groove; 1032. a limiting colloid;

201. an anti-rotation projection; 2011. a guiding mating surface; 202. a threaded hole; 203. mounting holes;

301. the limiting plate body; 3011. a projection; 3012. an assembly hole; 3013. flanging; 3014. reinforcing ribs; 3015. and (7) positioning the holes.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inside", "outside", etc. appear, they are based on the orientation or positional relationship shown in the drawings and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are to be construed as indicating or implying any particular importance.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The present embodiment relates to a suspension bushing 1, which comprises an outer tube 101, an inner core 102, and a rubber body 103 connected between the inner core 102 and the outer tube 101, as shown in fig. 1, wherein at least one end of the rubber body 103 is provided with a plurality of grooves 1031, and the grooves 1031 are distributed at intervals along the circumferential direction of the rubber body 103.

Through the structure, the suspension rigidity can be effectively reduced, and in the production and manufacturing process, the rigidity ratio of the suspension bushing is favorably adjusted by adjusting parameters such as the groove width and the groove depth of the groove 1031, so that the suspension bushing has better NVH performance and durability.

Specifically, as shown in fig. 1 and 2, the suspension bushing 1 of the present embodiment includes an outer tube 101, a rubber body 103, and an inner core 102, which are cylindrical in sequence from outside to inside. The outer tube 101 is preferably made of a metal material having a certain strength, such as steel. In addition, both ends of the rubber body 103 are provided with recesses 1031, the whole recesses 1031 are in the form of long holes, and the recesses 1031 on both end surfaces are four recesses arranged at intervals in the circumferential direction of the rubber body 103. The stiffness of the suspension can also be effectively reduced by providing a plurality of recesses 1031 on the rubber body 103.

It should be noted that the above-mentioned recess 1031 may be provided on only one end surface of the rubber body 103, in addition to both end surfaces of the rubber body 103. In addition, the number of the grooves 1031 may be one, two, or any number other than the four provided in the above description. In addition, the depth of the recess 1031 can be set according to actual use conditions so as to meet the requirement of suspension rigidity.

The embodiment further relates to a motor suspension, as shown in fig. 6, the motor suspension includes the suspension bushing 1, a motor arm 2 and a suspension limiting plate 3, wherein the motor arm 2 and the suspension limiting plate 3 are respectively disposed at two ends of the suspension bushing 1. And the suspension limiting plate 3, the inner core 102 and the motor arm 2 are fixedly connected together through the fastening component 4, and the motor arm 2 is connected to the motor.

In detail, the suspension bushing 1 of the present embodiment is provided with other structures in addition to the above-described structure, and a specific structure of the suspension bushing 1 will be described below. As shown in fig. 6 in conjunction with fig. 1 to 5, the suspension bushing 1 includes, in order from the outside to the inside, an outer tube 101, a rubber body 103, and an inner core 102. Wherein, the partial structure of the rubber body 103 can refer to the above description. In the present embodiment, one end of the outer tube 101 near the suspension limiting plate 3 is provided with a limiting flange 3013 arranged in an eversion manner, and the limiting flanges 3013 are two limiting bodies 301 corresponding to the following description and are respectively arranged on two opposite sides of the outer tube 101.

To reduce noise transmission, NVH performance is improved. In this embodiment, the rubber body 103 has a limiting colloid 1032 covering the surface of the limiting flange 3013, so that the limiting colloid 1032 can abut against the suspension limiting plate 3 described below, and hard contact between the suspension bushing 1 and the suspension limiting plate 3 is avoided.

The inner core 102 of the present embodiment is structured as shown in fig. 4 and 5, and one end of the inner core 102 close to the motor arm 2 has an extension portion extending outside the outer tube 101, and the extension portion is formed with an anti-rotation groove 1022. Referring to fig. 4 and 6, corresponding to the anti-rotation groove 1022, an anti-rotation protrusion 201 is formed on the motor support arm 2, and the anti-rotation protrusion 201 is inserted into the anti-rotation groove 1022, so that the inner core 102 is mounted on the motor support arm 2. Through the plug-in mounting and matching of the anti-rotation groove 1022 and the anti-rotation bump 201, on one hand, the installation of the inner core 102 on the motor support arm 2 is facilitated, and on the other hand, the rotation of the inner core 102 relative to the motor support arm 2 can be effectively prevented, so that the installation effect of the inner core 102 is improved.

Wherein, the suspension limiting plate of this embodiment, as shown in fig. 7 and 8, this suspension limiting plate 3 is including being rectangular form limiting plate body 301, the middle part of this limiting plate body 301 is equipped with bulge 3011, bulge 3011 specifically is formed by limiting plate body 301 self bulging to inner core 102 one side, and along the direction of bulging, bulge 3011 is the round platform form that the diameter gradually diminishes, also bulge 3011 is the circular cone column structure, and this suspension limiting plate links to each other through this bulge 3011 and inner core 102, thereby constitute spacingly to the installation of suspension bush 1, and not only can improve the structural strength of suspension limiting plate 3, can also do benefit to the length that shortens inner core 102.

Specifically, as shown in fig. 7 and 8, the limiting plate body 301 of the present embodiment is generally oblong or elliptical in shape as a whole, and this configuration can save materials and reduce manufacturing costs as compared to a circular shape. Of course, it is understood that the limiting plate body 301 may be provided in a rectangular shape or the like, in addition to the above-described structure.

In order to further improve the structural strength of the suspension limiting plate 3, in this embodiment, a flange 3013 is formed on the edge of the ring limiting plate body 301, and the flange 3013 is folded towards the side far away from the protruding part. So, be favorable to the side at limiting plate's bulge 3011 place and the butt installation of suspension bush 1.

In order to further improve the structural strength of the stopper plate body 301, in this embodiment, the stopper plate body 301 is provided with two groups of reinforcing ribs 3014, the reinforcing ribs 3014 are respectively disposed on two opposite sides of the protrusion 3011, and each group of reinforcing ribs 3014 extends from one end of the stopper plate body 301 in the length direction to the end of the protrusion 3011.

In addition, in this embodiment, an assembly hole 3012 is further formed at an end of the protruding portion 3011 to facilitate installation of the fastening component 4, so that the suspension limiting plate, the inner core 102 and a motor arm described below can be connected together.

In order to facilitate the connection between the protrusion 3011 of the limiting plate body 301 and the inner core 102, in this embodiment, a notch 1023 is formed at one end of the inner core 102 close to the suspended limiting plate 3, and the protrusion 3011 is at least partially embedded in the notch 1023, so that the protrusion 3011 can fill up part of the inner core 102, and the length of the inner core 102 can be as small as possible, that is, the length of the inner core 102 can be shortened by the protrusion 3011.

In order to further facilitate the installation of the inner core 102 on the motor arm 2, in this embodiment, a polygonal guiding surface 1021 is formed on the inner surface of the anti-rotation groove 1022, and a guiding mating surface 2011 with a polygonal profile is correspondingly formed on the outer surface of the anti-rotation protrusion 201 corresponding to the guiding surface 1021, so as to facilitate the guiding insertion of the anti-rotation protrusion 201 in the anti-rotation groove 1022.

As a preferred embodiment of this embodiment, in order to facilitate the positioning and installation of the inner core 102 on the suspension limiting plate 3, in this embodiment, adjacent to the assembly hole 3012, a positioning hole 3015 is provided at the end of the protrusion 3011, and a positioning protrusion 1025 is also provided at one end of the inner core 102 close to the suspension limiting plate 3, and the positioning protrusion 1025 is positioned and installed in the positioning hole 3015 on the limiting plate, thereby enabling the inner core 102 to have a better positioning effect.

In addition, the structure of the motor arm 2 of the present embodiment is shown in fig. 9, and the motor arm 2 is provided with a plurality of mounting holes 203 arranged at intervals, so as to facilitate the mounting of the motor arm 2 on the motor. Meanwhile, the motor support arm 2 is further provided with a threaded hole 202 for being screwed and fixed with the fastening component 4. The screw holes 202 are provided corresponding to the fitting holes 3012 formed at the end portions of the projecting portions, and the fastening members 4 are preferably bolts. Thus, the suspension holder plate 3 and the suspension bushing 1 are connected to the threaded hole 202 by bolts passing through the fitting hole 3012 and the core 102, thereby connecting the suspension holder plate 3 and the suspension bushing 1 to the motor arm 2.

It should be noted that, in addition to the above-mentioned structure, the inner core 102 of the present embodiment may be provided with only the anti-rotation groove 1022 connected to the motor arm 2 at the end thereof, or only the notch 1023 abutted to the suspension limit plate 3. It should be noted that the bolt assembly may be a bolt and nut or a threaded stud and nut, in addition to the bolt and the threaded hole 202 formed in the motor arm 2.

The motor suspension of this embodiment effectively reduces suspension rigidity through adopting foretell suspension bush, does benefit to the adjustment suspension bush rigidity ratio to make the motor suspension have better NVH performance and durability. Meanwhile, the structural strength of the motor suspension installation can be improved through the arrangement of the suspension limiting plate, the length of the inner core 102 of the suspension bushing 1 is shortened, and a better using effect is achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A suspension bushing (1) comprising an outer tube (101), an inner core (102), and a rubber body (103) connected between the inner core (102) and the outer tube (101), characterized in that: at least one end of the rubber body (103) is provided with a plurality of grooves (1031), and the grooves (1031) are distributed along the circumferential direction of the rubber body (103) at intervals.

2. A motor suspension characterized in that: the suspension bushing (1) of claim 1, further comprising a motor arm (2) and a suspension limiting plate (3), wherein the motor arm (2) and the suspension limiting plate (3) are separately arranged at two ends of the suspension bushing (1), and the suspension limiting plate (3), the inner core (102) and the motor arm (2) are fixedly connected together by a fastening component (4).

3. The motor suspension of claim 2, wherein: inner core (102) are close to the one end of motor support arm (2) have stretch out in the outer overhang of outer tube (101), be formed with on the overhang and prevent rotating groove (1022), be formed with on motor support arm (2) and prevent rotating lug (201), prevent rotating lug (201) and insert and establish prevent rotating groove (1022) in.

4. The motor suspension of claim 2, wherein: suspension limiting plate (3) include limiting plate body (301), the middle part of limiting plate body (301) is equipped with bulge (3011), bulge (3011) by limiting plate body (301) self to inner core (102) one side is bloated and is formed to along the direction of bulging, bulge (3011) are the round platform form that the diameter gradually diminishes, just suspension limiting plate (3) are passed through bulge (3011) with inner core (102) link to each other.

5. The motor suspension of claim 4, wherein: and a flange (3013) is formed at the edge of the limiting plate body (301), and the flange (3013) is turned over to one side far away from the protruding part (3011).

6. The motor suspension of claim 4, wherein: the limiting plate is characterized in that reinforcing ribs (3014) are arranged on the limiting plate body (301), the reinforcing ribs (3014) are arranged in two groups on two opposite sides of the protruding portion (3011), and the reinforcing ribs (3014) of each group extend to the end portion of the protruding portion (3011) from one end of the limiting plate body (301) in the length direction.

7. The motor suspension of claim 4, wherein: one end of the inner core (102) close to the suspension limiting plate (3) is formed with a notch (1023), and the convex part (3011) is at least partially embedded in the notch (1023).

8. The motor suspension of claim 4, wherein: the limiting plate body (301) is long, the outer tube (101) is close to the one end of suspension limiting plate (3) has spacing turn-ups (3013) of turning up the arrangement, spacing turn-ups (3013) are for corresponding limiting plate body (301) is set up separately two of outer tube (101) double-phase offside, just rubber body (103) have cover in spacing turn-ups (3013) spacing colloid (1032) on the surface.

9. The motor suspension according to any one of claims 4 to 8, characterized in that: the end part of the protruding part (3011) is provided with an assembling hole (3012), the motor support arm (2) is provided with a threaded hole (202), the fastening component (4) adopts a bolt, and the bolt penetrates through the assembling hole (3012) and the inner core (102) to be connected into the threaded hole (202).

10. The motor suspension of claim 9, wherein: adjacent to the assembling hole (3012), a positioning hole (3015) is arranged at the end part of the protruding part (3011), and a positioning protrusion (1025) is arranged at one end, close to the suspension limiting plate (3), of the inner core (102).

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