CN115949697A - Engine hydraulic suspension structure - Google Patents

Abstract

The invention discloses an engine hydraulic suspension structure, which comprises a shell, a rubber main spring and a partition plate, wherein the shell is provided with a sealing cavity, hydraulic medium is arranged in the sealing cavity, the rubber main spring and the partition plate are vertically and synchronously arranged in the sealing cavity in a sliding manner, a transmission rod penetrating through the shell is upwards extended from the top of the rubber main spring, a limiting part for limiting the rubber main spring is arranged in the shell, the sealing cavity is divided into an upper cavity and a lower cavity by the partition plate, and the rubber main spring is positioned in the upper cavity, so that an upper unidirectional filtering component and a lower unidirectional filtering component can filter and remove impurities of the hydraulic medium flowing back and forth between the upper liquid cavity and the lower liquid cavity, the hydraulic medium flows more smoothly between an upper liquid hole and a lower liquid hole, and the phenomenon that the washout of the rubber main spring is accelerated when the impurities in the hydraulic medium are excessive is avoided.

Description

An engine hydraulic mount structure

technical field

The invention relates to the technical field of hydraulic mounts, in particular to an engine hydraulic mount structure.

Background technique

The suspension structure is an important part of the car. The engine mount is a support and vibration isolation element connecting the engine and the car body. It can isolate the vibration and noise of the engine from being transmitted to the cabin, and significantly improve the comfort of the vehicle. The common types of mounts are divided into rubber mounts, hydraulic mounts, semi-active mounts and active mounts according to the development process. Among them, hydraulic mounts have large low-frequency damping, small high-frequency stiffness, and better vibration and noise reduction. Ideal and other characteristics, hydraulic mounts are widely used in automobiles because of their good vibration isolation performance.

For example, the Chinese patent publication number is CN214661703U, which discloses a hydraulic engine mount, and the protection claims are as follows: comprising a rubber main spring, the inner side of the top of the rubber main spring is fixedly connected with an engine connecting seat, and the outer side of the rubber main spring is An outer frame is provided, the outer side of the bottom of the outer frame is fixedly connected with an annular positioning frame, the inner side of the annular positioning frame is provided with a flow channel body, and the top of the flow channel body is provided with a flow channel cover plate. The inside of the channel body is provided with circular grooves, and the inside of the channel cover plate is provided with evenly distributed circulation holes.

The disadvantages are: when the hydraulic medium flows back and forth between the upper liquid chamber and the lower liquid chamber, it is not easy to filter the hydraulic medium, and when there are too many impurities, it is easy to accelerate the erosion of the rubber main spring, so it needs to be improved.

Contents of the invention

The object of the present invention is to provide a hydraulic engine mount structure, equipped with upper and lower one-way filter components, which can filter and remove impurities from the hydraulic medium flowing back and forth between the upper liquid chamber and the lower liquid chamber, so that the hydraulic medium can The flow between the lower liquid holes is smoother, and it also avoids the accelerated erosion of the rubber main spring when there are too many impurities in the hydraulic medium, and solves the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a hydraulic engine mount structure, including a housing, a rubber main spring, and a partition, the housing has a sealed chamber, and the rubber main spring and the partition are vertical The synchronous sliding is set in the sealed chamber, the bottom of the rubber main spring is a medium chamber, the medium chamber is provided with a hydraulic medium, and the top of the rubber main spring extends upwards with a transmission rod that runs through the housing, and the separator is located on the rubber main spring. Below the spring, the partition divides the medium chamber into an upper chamber and a lower chamber;

There is a damping gap between the rubber main spring and the partition, and the partition is provided with an upper liquid hole and a lower liquid hole, and the distance between the upper liquid hole and the central axis of the partition is smaller than that of the lower liquid hole. The upper liquid hole is provided with an upper one-way filter assembly, and the upper one-way filter assembly is used to make the hydraulic medium in the lower chamber flow into the upper chamber in one direction, and the lower liquid hole is provided with a lower filter assembly. A one-way filter assembly, the lower one-way filter assembly is used to make the hydraulic medium in the upper chamber flow into the lower chamber in one direction.

Preferably, a limiting member for limiting the main rubber spring is provided inside the housing, and the limiting member is used for limiting the vertical movement of the main rubber spring.

Preferably, the housing includes an upper housing and a lower housing, the upper housing and the lower housing are combined to form a sealed chamber, the upper housing and the lower housing are detachably installed, and the upper housing and the lower housing can be Disassembly and installation by flanges and bolts.

Preferably, the limiting member is a sealing ring, the sealing ring is arranged at the contact between the upper casing and the lower casing, and the sealing ring has a protrusion extending inward, and the protrusion can be a ring structure.

Preferably, the bottom of the rubber main spring is extended downward with a threaded post, the partition is detachably mounted on the threaded post, the partition is provided with a through hole for the threaded post to pass through, and the threaded post is fixedly sleeved with a The fixing ring is threadedly connected with a nut on the threaded column, and the partition is located between the fixing ring and the nut, and the fixing ring and the nut limit and fix the partition on the threaded column.

Preferably, both the upper one-way filter assembly and the lower one-way filter assembly include a sleeve, the sleeve is fixedly installed in the upper liquid hole or the lower liquid hole, and two circular platforms are arranged up and down in the sleeve, and the The opening of the casing is provided with a sealing sleeve suitable for the round table, and a connecting rod is arranged between the two round tables, and a positioning piece for limiting the position of the round table is also provided between the two round tables. The positioning part in the filter assembly is used to limit the displacement of the circular platform at the bottom. On the one hand, it prevents the circular platform at the bottom from excessively displacing the casing, and on the other hand, it prevents the circular platform at the bottom from excessively displacing against the sealing sleeve, which affects the flow of the hydraulic medium. , the positioning piece in the upper one-way filter assembly is used to limit the displacement of the top circular platform, on the one hand to prevent the top circular platform from excessively dislodging from the casing, and on the other hand to prevent the top circular platform from excessively abutting against the sealing sleeve, And affect the flow of hydraulic medium.

Preferably, the positioning member is a limit block, and the limit block is fixedly installed in the casing.

Preferably, the positioning member is a filter plate, and the filter plate is fixedly installed in the casing, and a spring is arranged between the filter plate and the round table.

Preferably, the radius of the top of the circular platform in the upper one-way filter assembly is greater than the radius of the bottom thereof, so that there is a gap between the circular platform and the sealing sleeve during the upward movement of the circular platform, and it is convenient for the hydraulic medium to flow from the lower chamber to the upper chamber in one direction. The radius of the top of the circular platform in the lower one-way filter assembly is smaller than the radius of the bottom, so that there is a gap between the circular platform and the sealing sleeve during the downward movement, and the hydraulic medium can flow from the upper chamber to the lower chamber in one direction.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. Through the setting of the limiter, the sealing ring seals the contact between the upper casing and the lower casing, which improves the sealing performance of the casing, and at the same time acts as a limiter for the rubber main spring, avoiding the rubber main spring. Excessive displacement of the spring causes the bottom of the partition and the shell to contact, which is easy to cause damage to the partition. After the rubber main spring moves down for a certain displacement, it will squeeze the protrusion, and the rubber main spring will be deformed. Using the elasticity of the rubber main spring Deformation characteristics for vibration damping.

2. Through the setting of the upper and lower one-way filter components, the filter plate can filter the hydraulic medium during the one-way flow of the hydraulic medium, making the flow of the hydraulic medium between the upper and lower liquid holes smoother and avoiding In order to speed up the erosion of the hydraulic medium on the rubber main spring when there are too many impurities in the hydraulic medium.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a sectional view of the present invention;

Fig. 3 is the structural representation of rubber main spring and dividing plate of the present invention;

Fig. 4 is the structural representation of sealing ring of the present invention;

Fig. 5 is an enlarged view of the structure at A of the present invention.

In the figure: 1, shell; 111, upper shell; 112, lower shell; 113, sealing ring; 114, protrusion; 2, rubber main spring; 3, clapboard; 4, upper chamber; 5, lower Chamber; 6. Transmission rod; 7. Upper liquid hole; 8. Lower liquid hole; 9. Threaded column; 10. Fixed ring; 11. Nut; 12. Sleeve; , connecting rod; 16, filter plate; 17, spring; 18, limit block.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1 to 5, the present invention provides a technical solution: a hydraulic engine mount structure, including a housing 1, a rubber main spring 2, and a partition 3, the housing 1 has a sealed chamber, and the rubber main spring 2 It is vertically and synchronously slidable with the partition plate 3 and is arranged in the sealed chamber. Below the main rubber spring 2 is a medium chamber, and a hydraulic medium is provided in the medium chamber, and the hydraulic medium can be hydraulic oil.

Referring to Figure 3, the top of the rubber main spring 2 extends upwards with a transmission rod 6 penetrating through the housing 1, and the top of the transmission rod 6 and the bottom of the housing 1 are fixedly connected with a mounting plate, and the transmission rod 6 can be connected to the engine through the mounting plate. The supporting arms are connected to facilitate the transmission of the vibration generated by the engine to the rubber main spring 2, and the housing 1 can be connected to the vehicle frame through the mounting plate.

Referring to Fig. 1, the housing 1 includes an upper housing 111 and a lower housing 112, the upper housing (111) and the lower housing (112) are combined to form a sealed chamber, the upper housing 111 and the lower housing 112 are detachably installed, The upper housing 111 and the lower housing 112 can be detachably installed through bolts and flanges, and the detachable installation facilitates the subsequent replacement of the separator 3 or the rubber main spring 2 .

Referring to Fig. 4, the housing 1 is provided with a limiting member for limiting the rubber main spring 2, the limiting member is a sealing ring 113, and the sealing ring 113 is arranged at the contact of the upper housing 111 and the lower housing 112 , the openings of the upper casing 111 and the lower casing 112 are provided with grooves, and the sealing ring 113 is placed in the groove, and the sealing ring 113 seals the contact between the upper casing 111 and the lower casing 112, improving the The tightness of the housing avoids the leakage of the hydraulic medium. The sealing ring 113 has a protrusion 114 extending inward, and the protrusion 114 plays a role in limiting the rubber main spring 2, avoiding the excessive displacement of the rubber main spring 2, which will cause The partition 3 is in contact with the bottom of the housing 1, which is easy to cause damage to the partition 3. After the rubber main spring 2 moves down for a certain displacement, it will squeeze the protrusion 114, and the rubber main spring 2 will be deformed. Elastic deformation properties for vibration damping.

The protrusion 114 has a ring structure, and the contact area between the protrusion 114 and the main rubber spring 2 is increased by setting the ring structure, so that the limiting effect on the main rubber spring 2 is better.

The partition 3 is located below the rubber main spring 2, and the partition 3 divides the medium chamber into an upper chamber 4 and a lower chamber 5;

There is a damping gap between the rubber main spring 2 and the partition 3 , and the bottom of the rubber main spring 2 is extended downward with a threaded post 9 , and the partition 3 is detachably mounted on the threaded post 9 .

Referring to Fig. 2, a through hole for the threaded column 9 is provided on the partition 3, a fixed ring 10 is fixedly sleeved on the threaded column 9, a nut 11 is threaded on the threaded column 9, and the partition 3 is positioned at the fixed ring 10 Between and the nut 11 , the fixing ring 10 and the nut 11 fix the partition plate 3 on the threaded column 9 in a limited position.

There are several upper liquid holes 7 and lower liquid holes 8 on the dividing plate 3. The distance between the upper liquid hole 7 and the central axis of the dividing plate 3 is smaller than the distance between the lower liquid hole 8 and the central axis of the dividing plate 3. There is an upper one-way filter assembly, which is used to make the hydraulic medium in the lower chamber 5 flow into the upper chamber 4 in one direction, and a lower one-way filter assembly is arranged in the lower liquid hole 8, and the lower one-way filter assembly It is used to make the hydraulic medium in the upper chamber 4 flow into the lower chamber 5 in one direction.

Referring to Figure 2 and Figure 4, both the upper one-way filter assembly and the lower one-way filter assembly include a sleeve 12, the sleeve 12 is fixedly installed in the upper liquid hole 7 or the lower liquid hole 8, and two The round table 13 and the opening of the casing 12 are provided with a sealing sleeve 14 that is compatible with the round table 13. The radius of the top of the round table 13 in the upper one-way filter assembly is larger than the radius of the bottom, which is convenient for the sealing of the round table 13 during the upward movement. There is a gap between the sleeves 14, so that the hydraulic medium can flow in one direction from the lower chamber 5 to the upper medium 4 chamber. For example, when the partition 3 moves down and squeezes the hydraulic medium in the lower chamber 5, the lower chamber The hydraulic medium in 5 facilitates the upward movement of the circular platform 13, so that the hydraulic medium can flow from the lower chamber 5 to the upper chamber 4, and the radius of the top of the circular platform 13 in the lower one-way filter assembly is smaller than the radius of its bottom, which facilitates the downward movement of the circular platform 13 During the process, there is a gap between the sealing sleeve 14, which is convenient for the hydraulic medium to flow from the upper chamber 4 to the lower chamber 5 in one direction. When the partition 3 moves up and squeezes the hydraulic medium in the upper chamber 4 upward, The hydraulic medium in the chamber 4 is convenient to push the round platform 13 down, so that the hydraulic medium can flow from the upper chamber 4 into the lower chamber 5 .

Moreover, a connecting rod 15 is arranged between the two round tables 13, and a positioning piece for limiting the round table 13 is also arranged between the two round tables 13. The positioning piece is a limiting block 18, which is fixedly installed on the sleeve within 12.

When the hydraulic medium in the lower chamber 5 pushes the round table 13 upward, the stop block 18 acts as a limit to the round table 13. On the one hand, it prevents the round table 13 at the bottom from moving upwards from the casing 12, and on the other hand, it prevents the bottom Excessive abutment on the sealing sleeve 14 on the round platform 13 of the cylinder affects the flow of the hydraulic medium, so that the hydraulic medium can flow from the lower chamber 5 into the upper chamber 4 .

When the hydraulic medium in the upper chamber 4 pushes the round table 13 to move down, the stop block 18 acts as a limit to the round table 13. On the one hand, it prevents the top of the round table 13 from dislodging from the sleeve 12, and on the other hand, it prevents the top of the round table from 13 is excessively displaced and abuts against the sealing sleeve 14 , thereby affecting the flow of the hydraulic medium, so that the hydraulic medium can flow from the upper chamber 4 into the lower chamber 5 .

The positioning part is a filter plate 16, which is fixedly installed in the casing 12, and a spring 17 is arranged between the filter plate 16 and the round table 13. The filter plate 16 not only acts as a limit to the round table 13, but also can prevent the hydraulic medium To filter and remove impurities, through the setting of spring 17, there is a gap between the round table 13 and the filter plate 16, which is convenient for the hydraulic medium to circulate in the upper and lower liquid holes, and the spring 17 also has a reset function, which is convenient for pushing the round table 13 and the sealing sleeve 14 contacts have realized the plugging of the upper and lower liquid holes in the initial state.

Referring to Figure 2, when the rubber main spring 2 drives the diaphragm 3 to move down, the diaphragm 3 presses the hydraulic medium in the lower chamber 5 downward, and the hydraulic medium in the lower chamber 5 will flow to the upper chamber through the upper liquid hole 7 In the chamber 4, when the hydraulic medium is flowing, the filter plate 16 can filter the hydraulic medium. When the rubber main spring 2 drives the partition 3 to move upward, the partition 3 will squeeze the hydraulic medium in the upper chamber 4, The hydraulic medium in the upper chamber 4 will flow into the lower chamber 5 through the lower liquid hole 8. During the flow of the hydraulic medium, the filter plate 16 can filter the hydraulic medium, so that the hydraulic medium is between the upper and lower liquid holes. The flow of the hydraulic fluid is smoother, and it also avoids the accelerated erosion of the rubber main spring 2 when there are too many impurities in the hydraulic medium, prolonging the service life of the rubber main spring 2.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (9)

1. A hydraulic mount structure for an engine, characterized in that: it comprises a housing (1), a rubber main spring (2), a partition (3), the housing (1) has a sealed chamber, and the rubber main spring The spring (2) and the partition (3) are vertically and synchronously slidably arranged in the sealed chamber, and the bottom of the main rubber spring (2) is a medium chamber, and a hydraulic medium is arranged in the medium chamber, and the main rubber spring ( 2) There is a transmission rod (6) extending upwards through the housing (1) from the top, the partition (3) is located below the rubber main spring (2), and the partition (3) divides the medium cavity into upper chamber (4) and lower chamber (5); There is a damping gap between the rubber main spring (2) and the partition (3), and an upper liquid hole (7) and a lower liquid hole (8) are opened on the described partition (3), and the upper liquid hole (7) is equipped with an upper one-way filter assembly, and the upper one-way filter assembly is used to make the hydraulic medium in the lower chamber (5) flow into the upper chamber (4) in one direction, and the lower liquid hole (8 ) is provided with a lower one-way filter assembly, and the lower one-way filter assembly is used to make the hydraulic medium in the upper chamber (4) flow into the lower chamber (5) in one direction. 2 . The engine hydraulic mount structure according to claim 1 , characterized in that: the casing ( 1 ) is provided with a limiting member for limiting the vertical movement of the rubber main spring ( 2 ). 3. The engine hydraulic mount structure according to claim 2, characterized in that: the housing (1) comprises an upper housing (111) and a lower housing (112), and the upper housing (111 ) and the lower casing (112) are combined to form a sealed chamber, and the upper casing (111) and the lower casing (112) are detachably installed. 4. The engine hydraulic mount structure according to claim 3, characterized in that: the limiting member is a sealing ring (113), and the sealing ring (113) is arranged on the upper casing (111) and the lower casing (111). The contact portion of the housing (112) is used to limit the vertical downward movement of the rubber main spring (2). 5. The engine hydraulic mount structure according to claim 1, characterized in that: the bottom of the main rubber spring (2) is extended downward with a threaded post (9), and the partition (3) can be Remove and install on the threaded post (9). 6. A hydraulic mount structure for an engine according to claim 1, characterized in that: both the upper one-way filter assembly and the lower one-way filter assembly include a sleeve (12), and the sleeve (12) is fixed Installed in the upper liquid hole (7) or the lower liquid hole (8), two round tables (13) are arranged up and down in the sleeve pipe (12), and the opening of the sleeve pipe (12) is provided with a round table ( 13) A matching sealing sleeve (14), and a connecting rod (15) is arranged between the two round tables (13), and a stop for limiting the round table (13) is also provided between the two round tables (13). Positioner. 7. The engine hydraulic mount structure according to claim 6, characterized in that: the positioning member is a limit block (18), and the limit block (18) is fixedly installed in the casing (12) . 8. The engine hydraulic mount structure according to claim 6, characterized in that: the positioning member is a filter plate (16), and the filter plate (16) is fixedly installed in the casing (12), so that A spring (17) is arranged between the filter plate (16) and the round table (13). 9. A hydraulic mount structure for an engine according to claim 6, characterized in that: the radius of the top of the inner circular platform (13) of the upper one-way filter assembly is greater than the radius of the bottom thereof, and the inner diameter of the lower one-way filter assembly The radius of the cone (13) top is smaller than the radius of its bottom.

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