CN112092600A - Suspension structure - Google Patents

Abstract

The invention provides a suspension structure, and belongs to the technical field of engines. It has solved the relatively poor problem of stability that current suspension structure connects. This suspension structure, including suspension and elasticity main spring, the suspension has the holding chamber, and the at least one end in holding chamber is uncovered, elasticity main spring part is located the holding intracavity, and elasticity main spring has two at least location archs, sets up the positioning groove who sets up with the protruding one-to-one in location on the chamber wall in holding chamber, and positioning groove has the installing port towards the one end of holding chamber open end, and the location arch passes in the corresponding positioning groove of installing port embedding when elasticity main spring inserts the suspension. This suspension structure can promote the stability of use.

Description

a suspension structure

technical field

The invention belongs to the technical field of engines, and relates to a suspension structure.

Background technique

With the development of science and technology and the improvement of people's living standards, the comfort of the engine in the car has been paid more and more attention by people. The suspension system is used to connect the powertrain with the body and subframe parts. Its main function is to support the powertrain and reduce the impact of the vibration of the powertrain on the vehicle, while limiting the relative movement of the powertrain. Therefore, the suspension system plays a very important role in the NVH performance and VD performance of the vehicle.

At present, the suspension system generally adopts the pure rubber structure suspension. The pure rubber structure suspension is integrally vulcanized and formed by the rubber main spring, the vulcanized inner core and the vulcanized outer tube, and then pressed into the sheet metal or aluminum casting bracket. In the production process, the precision requirements of the vulcanization mold and the press-fitting tooling are relatively high, and the production cycle is very long, so the cost of the suspension system is relatively high.

In response to the above problems, people have developed various suspension structures:

For example, a Chinese patent application (patent application number: 201811220849.4) discloses a suspension structure for an electric vehicle and an electric vehicle, including a suspension frame, the suspension frame is U-shaped, and the ends of the U-shape extend to the outside of the U-shaped mouth respectively to form The fixing part, the inner wall of the U-shaped mouth is provided with a fixing groove, the elastic main spring located in the U-shaped mouth of the suspension frame, one end of the elastic main spring is provided with a plurality of main spring limit blocks, and the other end is provided with a protrusion, a convex It is clamped with the fixing groove, and the support arm is connected with the elastic main spring.

The above-mentioned structure adopts the method that a protrusion is provided on the elastic main spring, and the protrusion is clamped with the fixing groove on the suspension frame, so that when the protrusion of the elastic main spring is clamped into the fixing groove, it needs to be A certain deformation can only be inserted, which makes the installation of the elastic main spring more difficult, and because the car suspension can reduce the vibration of the powertrain to the body and play a certain role in supporting and limiting when it is in use, so for The connection stability of the elastic main spring and the suspension frame is required to be high, but the above-mentioned method of clip connection must make the protrusion of the elastic main spring have better elasticity, but it also causes the elastic main spring and the suspension frame to have a relationship between them. The connection between them is not stable, and displacement deviation is prone to occur, which affects the use of the suspension structure.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose a suspension structure in view of the above-mentioned problems in the prior art. The technical problem to be solved by the present invention is: how to solve the problem of poor connection stability of the existing suspension structure.

The object of the present invention can be realized through the following technical solutions:

A suspension structure includes a suspension frame and an elastic main spring, the suspension frame has a accommodating cavity, at least one end of the accommodating cavity is open, the elastic main spring is partially located in the accommodating cavity, and the elastic main spring is partially located in the accommodating cavity. The main spring has at least two positioning protrusions, and it is characterized in that the cavity wall of the accommodating cavity is provided with positioning grooves corresponding to the positioning protrusions one-to-one, and the positioning grooves face the opening of the open end of the accommodating cavity. One end has an installation opening, and when the elastic main spring is inserted into the suspension frame, the positioning protrusion passes through the installation opening and is inserted into the corresponding positioning groove.

Since the suspension frame has an accommodating cavity, and the wall of the accommodating cavity is provided with a positioning groove, when the elastic main spring is inserted into the suspension frame, the positioning protrusion of the elastic main spring passes through the installation hole of the positioning groove and is embedded into the corresponding In the positioning groove, the connection between the suspension frame and the elastic main spring is realized; since the positioning groove has an installation opening at the end facing the open end of the accommodating cavity, the positioning protrusion can be embedded into the positioning groove more easily, The positioning protrusion of the elastic main spring will not deform when it is gradually embedded in the positioning groove, and the elastic main spring is partially located in the accommodating cavity, which avoids the need for deformation of the positioning protrusion on the elastic main spring during installation. As a result, the position of the elastic main spring and the suspension frame will be offset during subsequent use, thereby improving the stability of the entire suspension structure. When the positioning protrusion is subjected to the limiting force of the side wall of the positioning groove, the positioning protrusion is limited in the cavity wall of the accommodating cavity, and the positioning protrusion is vibrated during use, and the vibration force is transmitted to the cavity of the accommodating cavity. The cavity wall, and the positioning protrusion is embedded in the positioning groove and does not deform due to the positioning groove, so the strength of the positioning protrusion is not affected by the suspension frame, so that the positioning protrusion is not easily broken during use. , further improving the stability of the use of the suspension structure; through the arrangement of the suspension frame and the elastic main spring, the structure of the entire suspension structure is simple, and the required installation cost is low.

In the above-mentioned suspension structure, the suspension structure further includes a base, and the base is provided with a connecting plate, the two connecting plates are respectively arranged at two ends of the suspension frame, and the connecting plates block the installation opening and are connected to the suspension frame. Fixed rack.

By being provided with a base, and the connecting plate on the base blocks the installation hole, the connecting plate is fixedly connected with the suspension frame, so that the positioning protrusion is prevented from coming out of the installation opening after the elastic main spring vibrates, and the suspension main spring is improved. The stability of use; and the arrangement of the two connecting plates can realize the support for both ends of the suspension frame, and further improve the stability of the suspension frame setting.

In the above-mentioned suspension structure, there are two positioning protrusions, the elastic main spring is provided with a limit block, the limit block is arranged between the two positioning protrusions, and the limit block is connected to the two positioning protrusions. There is a gap between the cavity walls of the accommodating cavity.

The limit block can move with the elastic main spring, and the limit block can move toward or away from the cavity wall of the accommodating cavity. When the elastic main spring vibrates violently, the limit block can collide with the cavity wall of the accommodating cavity. Relying on to buffer the vibration of part of the elastic main spring, it also further prevents the positioning protrusion from directly moving out of the positioning groove; and the setting of the gap avoids the friction between the limit block and the cavity wall of the accommodating cavity during the installation process. Further improve the convenience of installation.

In the above suspension structure, the suspension frame is cylindrical, and the notch of the positioning groove faces the center of the suspension frame.

The existing suspension frame adopts a U-shaped structure. During the driving process of the vehicle, the suspension frame will vibrate, and the two ends of the suspension frame will be stretched outwards, resulting in the positioning protrusions and positioning holes of the elastic main spring. However, the suspension frame of the present application is cylindrical. At this time, the suspension frame is closed in the circumferential direction and the ends are open, so that when the suspension frame is vibrated, the suspension frame is basically not deformed, and the positioning groove is relatively The position of the positioning protrusion is fixed, which reduces the risk of the positioning protrusion being detached from the positioning groove, thereby improving the stability of the elastic main spring installed on the suspension frame.

In the above suspension structure, the positioning protrusions are elongated.

The setting of the shape of the positioning protrusion makes the connection between the positioning protrusion and the elastic main spring have a stable supporting force, and the end of the positioning protrusion embedded in the positioning groove is more stable, and when the elastic main spring is deformed, it strengthens the The overall strength of the elastic main spring.

In the above suspension structure, an included angle is formed between the protruding directions of the two positioning protrusions, and the included angle ranges from 90° to 150°.

By arranging the two positioning protrusions in the shape of "eight", the two positioning protrusions are used as the supporting feet of the elastic main spring to support the elastic main spring. When the elastic main spring vibrates, the "eight" shape is arranged. The two positioning protrusions make the elastic main spring mainly float up and down, and reduce the amplitude of the elastic main spring's lateral displacement, and when the elastic main spring floats up and down, the positioning protrusion bends and deforms so that the end of the positioning protrusion is further The tendency to be embedded in the positioning groove makes the positioning of the positioning protrusion in the positioning groove more stable and reliable.

In the above-mentioned suspension structure, the connecting plate is provided with an escape port, the opening wall of the escape port is arc-shaped, and the escape port is communicated with the accommodating cavity.

The setting of the vacant opening is convenient for the installation and positioning of the suspension frame on the base.

In the above-mentioned suspension structure, the base has a bottom plate, two connecting plates are respectively arranged on both sides of the bottom plate and are connected to the bottom plate, and the width of the connecting plate gradually decreases from the end connected to the bottom plate to the end away from the bottom plate. Small.

The structure of the base is stable and firm, the base is not easily deformed, and the stability of the base after installation is improved.

In the above suspension structure, the suspension structure includes a limit plate, two ends of the limit plate are bent to form a connecting part connected to the outer side wall of the suspension frame, and a limit part is arranged between the two connecting parts. The limiting portion is located at one end of the elastic main spring, and there is a gap between the limiting portion and the elastic main spring.

After the elastic main spring is connected to the engine, during the turning process of the vehicle, the vibration generated by the engine makes the elastic main spring have a tendency to come out of the accommodating cavity. When the accommodating cavity tends to move, the limiting portion abuts against the elastic main spring, thereby restricting the elastic main spring from completely detaching from the accommodating cavity. The part does not interfere with the elastic main spring.

The limit plate is arranged on the upper end of the suspension frame.

Compared with the prior art, the suspension structure has the following advantages:

1. The positioning groove has an installation opening at the end facing the open end of the accommodating cavity, so that the positioning protrusion of the elastic main spring will not be deformed when it is gradually embedded into the positioning groove, and the elastic main spring is partially located in the accommodating cavity. It avoids that the positioning protrusion on the elastic main spring needs to be deformed during installation, resulting in the positional deviation of the elastic main spring and the suspension frame during subsequent use, thereby improving the stability of the entire suspension structure.

2. The limit block can move with the elastic main spring, and the limit block can move toward or away from the cavity wall of the accommodating cavity. When the elastic main spring vibrates violently, the limit block can pass through the cavity of the accommodating cavity. The walls abut against each other to buffer the vibration of part of the elastic main spring, and further prevent the positioning protrusion from directly moving out of the positioning groove.

3. By arranging the two positioning protrusions in the "eight" shape, when the elastic main spring vibrates, the two positioning protrusions arranged in the "eight" shape make the elastic main spring mainly float up and down, and reduce the edge of the elastic main spring. The magnitude of lateral displacement, and when the elastic main spring floats up and down, the positioning protrusion will bend and deform, so that the end of the positioning protrusion is further embedded in the positioning groove, making the positioning protrusion more stable in the positioning groove. reliable.

Description of drawings

FIG. 1 is a schematic structural diagram of the suspension structure.

FIG. 2 is a partial front view of the suspension structure.

FIG. 3 is one of the partial structural schematic diagrams of the suspension structure.

FIG. 4 is the second schematic diagram of the partial structure of the suspension structure.

FIG. 5 is a partial structural schematic diagram of the elastic main spring in the suspension structure.

FIG. 6 is a schematic structural diagram of a suspension frame in the suspension structure.

In the figure, 1, suspension frame; 11, accommodating cavity; 12, positioning groove; 12a, installation port; 2, elastic main spring; 21, positioning protrusion; 22, limit block; 23, connecting block; 3 , base; 31, connecting plate; 31a, give way; 32, bottom plate; 4, gap; 5, limit plate; 51, connecting part; 52, limit part; 6, gap; 7, mounting plate.

Detailed ways

The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

As shown in FIG. 1 , the suspension structure includes a suspension frame 1 and an elastic main spring 2 . The suspension frame 1 has a accommodating cavity 11 , at least one end of the accommodating cavity 11 is open, and a part of the elastic main spring 2 is located in the accommodating cavity. 11 , the elastic main spring 2 has at least two positioning protrusions 21 .

Specifically, as shown in FIGS. 1-6 , the cavity wall of the accommodating cavity 11 is provided with positioning grooves 12 corresponding to the positioning protrusions 21 one-to-one. The positioning grooves 12 face one end of the open end of the accommodating cavity 11 . There is an installation opening 12a, and when the elastic main spring 2 is inserted into the suspension frame 1, the positioning protrusion 21 is inserted into the corresponding positioning groove 12 through the installation opening 12a.

Since the suspension frame 1 has an accommodating cavity 11 , and the wall of the accommodating cavity 11 is provided with a positioning groove 12 , when the elastic main spring 2 is inserted into the suspension frame 1 , the positioning protrusion 21 of the elastic main spring 2 passes through the positioning groove The mounting holes of the grooves 12 are embedded in the corresponding positioning grooves 12 to realize the connection between the suspension frame 1 and the elastic main spring 2; since the positioning grooves 12 have a mounting opening 12a at the end facing the open end of the accommodating cavity 11 , so that the positioning protrusion 21 is more easily embedded in the positioning groove 12, the positioning protrusion 21 of the elastic main spring 2 will not deform when it is gradually embedded in the positioning groove 12, and the elastic main spring 2 is partially located in the positioning groove 12. In the cavity 11, it avoids that the positioning protrusion 21 on the elastic main spring 2 needs to be deformed during installation, resulting in the positional deviation of the elastic main spring 2 and the suspension frame 1 during subsequent use, thereby improving the entire suspension structure. By providing a plurality of positioning protrusions 21 and positioning grooves 12 into which the corresponding positioning protrusions 21 can be embedded, the positioning protrusions 21 are subject to the limiting force of the side walls of the positioning grooves 12, and the positioning protrusions 21 are The lifting 21 is limited in the cavity wall of the accommodating cavity 11, and the positioning protrusion 21 is vibrated during use, and transmits the vibration force to the cavity wall of the accommodating cavity 11, and the positioning protrusion 21 is embedded in the positioning groove 12. There is no deformation due to the positioning groove 12, so the strength of the positioning protrusion 21 is not affected by the suspension frame 1, so that the positioning protrusion 21 is not easily broken during use, which further improves the use of the suspension structure. The stability of the suspension frame 1 and the elastic main spring 2 are arranged, so that the structure of the whole suspension structure is simple, and the required installation cost is low.

As shown in FIG. 1 , the upper end of the suspension frame 1 is connected with a mounting plate 7 connected with the vehicle body, and the elastic main spring 2 has a connecting block 23 arranged in the axial direction, and the connecting block 23 is connected with the engine of the vehicle body.

As shown in Figures 2-4, the suspension frame 1 is cylindrical, and the notch of the positioning groove 12 faces the center of the suspension frame 1. The suspension structure further includes a base 3, and the base 3 is provided with a connecting plate 31, two The connecting plates 31 are respectively disposed on both ends of the suspension frame 1 , and the connecting plates 31 block the installation opening 12 a and are fixedly connected with the suspension frame 1 .

As shown in FIG. 4 and FIG. 5 , there are two positioning protrusions 21 , the elastic main spring 2 has a limit block 22 , the limit block 22 is arranged between the two positioning protrusions 21 , and the limit block 22 is connected to the container. There is a gap 4 between the cavity walls of the accommodating cavity 11, the cavity wall of the accommodating cavity 11 and the side wall of the positioning groove 12 arc transition, the side wall of the positioning groove 12 and the bottom wall of the positioning groove 12 arc transition, The positioning protrusions 21 are elongated, and an included angle is formed between the protruding directions of the two positioning protrusions 21 , and the included angle ranges from 90° to 150°.

As shown in FIG. 4 and FIG. 5 , the connecting plate 31 is provided with an opening 31a, the wall of the opening 31a is arc-shaped, the opening 31a is communicated with the accommodating cavity 11, and the base 3 has a bottom plate 32, two The connecting plates 31 are respectively disposed on both sides of the bottom plate 32 and are connected to the bottom plate 32 .

As shown in FIG. 3 , the suspension structure includes a limit plate 5 , two ends of the limit plate 5 are bent to form a connecting portion 51 connected to the outer side wall of the suspension frame 1 , and there is a limit portion between the two connecting portions 51 . 52 , the limiting portion 52 is located at one end of the elastic main spring 2 , and there is a gap 6 between the limiting portion 52 and the elastic main spring 2 .

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, but will not deviate from the spirit of the present invention or go beyond the definitions of the appended claims range.

Claims (9)

1. A suspension structure, comprising a suspension frame (1) and an elastic main spring (2), the suspension frame (1) having a accommodating cavity (11), and at least one end of the accommodating cavity (11) is open The elastic main spring (2) is partially located in the accommodating cavity (11), and the elastic main spring (2) has at least two positioning protrusions (21), characterized in that the accommodating cavity (11) ) cavity wall is provided with positioning grooves (12) corresponding to the positioning protrusions (21) one-to-one, and the positioning groove (12) has an installation opening (12a) at one end facing the open end of the accommodating cavity (11). ), when the elastic main spring (2) is inserted into the suspension frame (1), the positioning protrusion (21) is inserted into the corresponding positioning groove (12) through the installation opening (12a). 2. The suspension structure according to claim 1, characterized in that, the suspension structure further comprises a base (3), the base (3) is provided with a connecting plate (31), and the two connecting plates (31) are respectively Provided at both ends of the suspension frame (1), the connecting plates (31) block the installation port (12a) and are fixedly connected with the suspension frame (1). 3. The suspension structure according to claim 1, characterized in that there are two positioning protrusions (21), the elastic main spring (2) is provided with a limit block (22), the limit The position block (22) is arranged between the two positioning protrusions (21), and there is a gap (4) between the position limit block (22) and the cavity wall of the accommodating cavity (11). 4. The suspension structure according to claim 1, 2 or 3, wherein the suspension frame (1) is cylindrical, and the notch of the positioning groove (12) faces the suspension frame (1). )center of. 5. The suspension structure according to claim 1, 2 or 3, wherein the positioning protrusion (21) is elongated. 6 . The suspension structure according to claim 3 , wherein an included angle is formed between the protruding directions of the two positioning protrusions ( 21 ), and the included angle ranges from 90° to 150°. 7 . 7. The suspension structure according to claim 2, characterized in that, the connecting plate (31) is provided with an opening (31a), and the opening wall of the opening (31a) is arc-shaped, so The abdication port (31a) communicates with the accommodating cavity (11). 8. The suspension structure according to claim 2, wherein the base (3) is provided with a bottom plate (32), and two connecting plates (31) are respectively arranged on both sides of the bottom plate (32) and are connected with the bottom plate (32). (32) Connection, the width of the connection plate (31) gradually decreases from the end connected with the bottom plate (32) to the end away from the bottom plate (32). 9. The suspension structure according to claim 1, 2 or 3, characterized in that, the suspension structure comprises a limit plate (5), and both ends of the limit plate (5) are formed by bending and suspending A connecting portion (51) connected to the outer side walls of the frame (1), a limiting portion (52) is provided between the two connecting portions (51), the limiting portion (52) is located at one end of the elastic main spring (2), and There is a gap (6) between the limiting portion (52) and the elastic main spring (2).

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