Engine hydraulic mount structure

Abstract

The present invention discloses an engine hydraulic suspension structure, comprising a shell, a rubber main spring, and a partition. The shell has a sealed chamber, and a hydraulic medium is provided in the sealed chamber. The rubber main spring and the partition are vertically and synchronously slidably arranged in the sealed chamber, and a transmission rod extending upward from the top of the rubber main spring and penetrating the shell is provided. A limiting member for limiting the rubber main spring is provided in the shell. The partition divides the sealed chamber into an upper chamber and a lower chamber, and the rubber main spring is located in the upper chamber, so that the upper and lower one-way filter components 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 flow of the hydraulic medium between the upper and 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.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic mounts, in particular to an engine hydraulic mount structure. Background Art

[0002] The suspension structure is an important component of a car. The engine mount is a supporting and vibration-isolating element connecting the engine and the car body. It can isolate the transmission of engine vibration and noise into the car compartment, significantly improving the comfort of the entire vehicle interior. Common types of mounts are divided into rubber mounts, hydraulic mounts, semi-active mounts and active mounts according to their development history. Among them, hydraulic mounts have the characteristics of large low-frequency damping, small high-frequency stiffness, and more ideal vibration and noise reduction. Hydraulic mounts are widely used in automobiles due to their good vibration isolation performance.

[0003] For example, Chinese patent publication number CN214661703U discloses an engine hydraulic mount, and the protected claims are: including a rubber main spring, the inner side of the top of the rubber main spring is fixedly connected to the engine connecting seat, the outer side of the rubber main spring is provided with an outer frame, the outer side of the bottom of the outer frame is fixedly connected to the outer side of the ring-shaped positioning frame, the inner side of the ring-shaped positioning frame is provided with a flow channel body, the top of the flow channel body is provided with a flow channel cover plate, the interior of the flow channel body is provided with a circular through groove, and the interior of the flow channel cover plate is provided with evenly distributed flow holes.

[0004] The existing defects are: when the hydraulic medium flows back and forth between the upper liquid chamber and the lower liquid chamber, it is difficult to filter the hydraulic medium. When there are too many impurities, it is easy to accelerate the erosion of the rubber main spring, so improvement is needed. Summary of the Invention

[0005] The object of the present invention is to provide an engine hydraulic mount structure having upper and lower one-way filter assemblies capable of filtering and removing impurities from the hydraulic medium flowing back and forth between the upper liquid chamber and the lower liquid chamber, thereby making the flow of the hydraulic medium between the upper and lower liquid holes smoother and avoiding the accelerated erosion of the rubber main spring when there are too many impurities in the hydraulic medium, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an engine hydraulic mount structure, comprising a housing, a rubber main spring, and a partition. The housing has a sealed chamber, the rubber main spring and the partition are vertically and synchronously slidably disposed within the sealed chamber, a medium chamber is defined below the rubber main spring, and a hydraulic medium is disposed within the medium chamber. A transmission rod extending upward from the top of the rubber main spring and penetrating the housing is provided. The partition is located below the rubber main spring and divides the medium chamber into an upper chamber and a lower chamber.

[0007] There is a vibration-damping gap between the rubber main spring and the partition, and an upper liquid hole and a lower liquid hole are provided on the partition. The distance between the upper liquid hole and the central axis of the partition is smaller than the distance between the lower liquid hole and the central axis of the partition. An upper one-way filter assembly is provided in the upper liquid hole, and the upper one-way filter assembly is used to make the hydraulic medium in the lower chamber flow unidirectionally into the upper chamber. A lower one-way filter assembly is provided in the lower liquid hole, and the lower one-way filter assembly is used to make the hydraulic medium in the upper chamber flow unidirectionally into the lower chamber.

[0008] Preferably, a limiting member for limiting the rubber main spring is provided in the housing, and the limiting member is used to limit the vertical movement of the rubber main spring.

[0009] Preferably, the shell includes an upper shell and a lower shell, the upper shell and the lower shell are combined to form a sealed chamber, the upper shell and the lower shell are detachable and installable, and the upper shell and the lower shell can be detachable and installed by flanges and bolts.

[0010] Preferably, the limiting member is a sealing ring, which is provided at the contact point between the upper shell and the lower shell. The sealing ring has a protrusion extending inwardly, and the protrusion may be an annular structure.

[0011] Preferably, a threaded column is extended downward from the bottom of the rubber main spring, and the partition is detachably mounted on the threaded column. A through hole is provided on the partition for the threaded column to pass through. A fixing ring is provided on the fixing sleeve of the threaded column, and a nut is threadedly connected to the threaded column, and the partition is located between the fixing ring and the nut. The fixing ring and the nut limit and fix the partition on the threaded column.

[0012] Preferably, the upper unidirectional filter assembly and the lower unidirectional filter assembly both include a sleeve, which is fixedly installed in the upper liquid hole or the lower liquid hole, and two frustums are arranged above and below the sleeve, and a sealing sleeve adapted to the frustum is provided at the opening of the sleeve, and a connecting rod is provided between the two frustums, and a positioning member for limiting the frustum is also provided between the two frustums. The positioning member in the upper unidirectional filter assembly is used to limit the displacement of the bottom frustum, on the one hand to prevent the frustum at the bottom from being excessively displaced from the sleeve, and on the other hand to prevent the frustum at the bottom from being excessively displaced and abutting against the sealing sleeve, thereby affecting the flow of the hydraulic medium. The positioning member in the upper unidirectional filter assembly is used to limit the displacement of the top frustum, on the one hand to prevent the frustum at the top from being excessively displaced from the sleeve, and on the other hand to prevent the frustum at the top from being excessively displaced and abutting against the sealing sleeve, thereby affecting the flow of the hydraulic medium.

[0013] Preferably, the positioning member is a limit block, and the limit block is fixedly installed in the sleeve.

[0014] Preferably, the positioning member is a filter plate, the filter plate is fixedly installed in the sleeve, and a spring is provided between the filter plate and the frustum.

[0015] Preferably, the radius of the top of the inner cone of the upper one-way filter component is larger than the radius of its bottom, so that there is a gap between the cone and the sealing sleeve during the upward movement of the cone, and the hydraulic medium flows from the lower chamber to the upper chamber in one direction. The radius of the top of the inner cone of the lower one-way filter component is smaller than the radius of its bottom, so that there is a gap between the cone and the sealing sleeve during the downward movement of the cone, and the hydraulic medium flows from the upper chamber to the lower chamber in one direction.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By setting the limiter, the sealing ring seals the contact point between the upper shell and the lower shell, improving the sealing of the shell. At the same time, it also plays a limiting role on the rubber main spring, avoiding excessive displacement of the rubber main spring, which causes the bottom of the partition to contact the shell and easily damage the partition. After the rubber main spring moves down a certain distance, it will squeeze the bulge and the rubber main spring will deform, and the elastic deformation characteristics of the rubber main spring are used to reduce vibration.

[0018] 2. By setting up 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 also avoiding the accelerated erosion of the rubber main spring by the hydraulic medium when there are too many impurities in the hydraulic medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 is a cross-sectional view of the present invention;

[0021] Figure 3 This is a schematic structural diagram of the rubber main spring and the partition plate of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the sealing ring of the present invention;

[0023] Figure 5 This is an enlarged view of the structure at location A of the present invention.

[0024] In the figure: 1. Shell; 111. Upper shell; 112. Lower shell; 113. Sealing ring; 114. Protrusion; 2. Rubber main spring; 3. Partition; 4. Upper chamber; 5. Lower chamber; 6. Transmission rod; 7. Upper liquid hole; 8. Lower liquid hole; 9. Threaded column; 10. Fixing ring; 11. Nut; 12. Sleeve; 13. Cone; 14. Sealing sleeve; 15. Connecting rod; 16. Filter plate; 17. Spring; 18. Limit block. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1 to 5 The present invention provides a technical solution: an engine hydraulic suspension structure, including a shell 1, a rubber main spring 2, and a partition 3. The shell 1 has a sealed chamber, and the rubber main spring 2 and the partition 3 are vertically and synchronously slidably arranged in the sealed chamber. The lower part of the rubber main spring 2 is a medium chamber, and a hydraulic medium is provided in the medium chamber. The hydraulic medium can be hydraulic oil.

[0027] Reference Figure 3 , and a transmission rod 6 extending upward from the top of the rubber main spring 2 passes through the shell 1. The top of the transmission rod 6 and the bottom of the shell 1 are fixedly connected with a mounting plate. The transmission rod 6 can be connected to the engine support arm through the mounting plate, so as to facilitate the transmission of the vibration generated by the engine to the rubber main spring 2. The shell 1 can be connected to the frame through the mounting plate.

[0028] Reference Figure 1 The shell 1 includes an upper shell 111 and a lower shell 112. The upper shell (111) and the lower shell (112) are combined to form a sealed chamber. The upper shell 111 and the lower shell 112 are detachable and installable. The upper shell 111 and the lower shell 112 can be detachably installed by bolts and flanges. The detachable installation setting facilitates subsequent replacement of the partition 3 or the rubber main spring 2.

[0029] 4 , a limiting member for limiting the rubber main spring 2 is provided in the housing 1 , and the limiting member is a sealing ring 113 , which is arranged at the contact point of the upper housing 111 and the lower housing 112 . A groove is provided at the openings of the upper housing 111 and the lower housing 112 , and the sealing ring 113 is placed in the groove. The sealing ring 113 seals the contact point of the upper housing 111 and the lower housing 112 , thereby improving the sealing performance of the housing and preventing leakage of the hydraulic medium. The sealing ring 113 extends inwardly with a protrusion 114 , which limits the rubber main spring 2 and prevents the rubber main spring 2 from excessive displacement, thereby causing the partition 3 to contact the bottom of the housing 1 , which may easily cause damage to the partition 3 . After the rubber main spring 2 moves downward a certain distance, it will squeeze the protrusion 114 , and the rubber main spring 2 will be deformed, and the elastic deformation characteristics of the rubber main spring 2 are used to reduce vibration.

[0030] The protrusion 114 is an annular structure. The contact area between the protrusion 114 and the rubber main spring 2 is increased by the provision of the annular structure, so that the limiting effect on the rubber main spring 2 is better.

[0031] The partition 3 is located below the rubber main spring 2, and the partition 3 divides the medium cavity into an upper chamber 4 and a lower chamber 5;

[0032] There is a vibration-damping gap between the rubber main spring 2 and the partition 3. A threaded column 9 is extended downward from the bottom of the rubber main spring 2, and the partition 3 can be detachably mounted on the threaded column 9.

[0033] Reference Figure 2 A through hole is opened on the partition 3 for the threaded column 9 to pass through, a fixing ring 10 is fixed on the threaded column 9, a nut 11 is threadedly connected to the threaded column 9, and the partition 3 is located between the fixing ring 10 and the nut 11. The fixing ring 10 and the nut 11 limit and fix the partition 3 on the threaded column 9.

[0034] A plurality of upper liquid holes 7 and lower liquid holes 8 are provided on the partition 3. The distance between the upper liquid hole 7 and the central axis of the partition 3 is smaller than the distance between the lower liquid hole 8 and the central axis of the partition 3. An upper one-way filter component is provided in the upper liquid hole 7. The upper one-way filter component is used to make the hydraulic medium in the lower chamber 5 flow unidirectionally into the upper chamber 4. A lower one-way filter component is provided in the lower liquid hole 8. The lower one-way filter component is used to make the hydraulic medium in the upper chamber 4 flow unidirectionally into the lower chamber 5.

[0035] Reference Figure 2 and Figure 4 , the upper unidirectional filter assembly and the lower unidirectional filter assembly both include a sleeve 12, the sleeve 12 is fixedly installed in the upper liquid hole 7 or the lower liquid hole 8, and two frustums 13 are arranged in the upper and lower parts of the sleeve 12. A sealing sleeve 14 adapted to the frustum 13 is provided at the opening of the sleeve 12. The radius of the top of the frustum 13 in the upper unidirectional filter assembly is greater than the radius of the bottom thereof, so that there is a gap between the frustum 13 and the sealing sleeve 14 during the upward movement, so that the hydraulic medium flows from the lower chamber 5 to the upper medium chamber 4 in a one-way manner. For example, when the partition 3 moves downward, the hydraulic medium in the lower chamber 5 is squeezed downward. When the medium is moved, the hydraulic medium in the lower chamber 5 can easily push the cone 13 to move upward, so that the hydraulic medium can flow from the lower chamber 5 to the upper chamber 4. The radius of the top of the cone 13 in the lower one-way filter component is smaller than the radius of its bottom, so that there is a gap between the cone 13 and the sealing sleeve 14 during the downward movement, which facilitates the unidirectional flow of the hydraulic medium from the upper chamber 4 to the lower chamber 5. When the partition 3 moves upward and squeezes the hydraulic medium in the upper chamber 4 upward, the hydraulic medium in the upper chamber 4 can easily push the cone 13 to move downward, so that the hydraulic medium can flow from the upper chamber 4 to the lower chamber 5.

[0036] A connecting rod 15 is provided between the two truncated tables 13 . A positioning member for limiting the truncated tables 13 is also provided between the two truncated tables 13 . The positioning member is a limiting block 18 . The limiting block 18 is fixedly installed in the sleeve 12 .

[0037] When the hydraulic medium in the lower chamber 5 pushes the table 13 to move upward, the limit block 18 limits the table 13. On the one hand, it prevents the table 13 at the bottom from moving upward too much and separating from the sleeve 12. On the other hand, it prevents the bottom table 13 from excessively abutting against the sealing sleeve 14, which affects the flow of the hydraulic medium, thereby facilitating the hydraulic medium to flow from the lower chamber 5 to the upper chamber 4.

[0038] When the hydraulic medium in the upper chamber 4 pushes the table 13 downward, the limit block 18 limits the table 13. On the one hand, it prevents the table 13 at the top from being excessively displaced and detached from the sleeve 12. On the other hand, it prevents the table 13 at the top from being excessively displaced and abutting 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.

[0039] The positioning member is a filter plate 16, which is fixedly installed in the sleeve 12. A spring 17 is provided between the filter plate 16 and the round table 13. The filter plate 16 not only limits the round table 13, but also filters and removes impurities from the hydraulic medium. Through the setting of the spring 17, a gap is provided between the round table 13 and the filter plate 16, which facilitates the circulation of the hydraulic medium in the upper and lower liquid holes. At the same time, the spring 17 also has a reset function, which facilitates the contact between the round table 13 and the sealing sleeve 14, thereby realizing the blocking of the upper and lower liquid holes in the initial state.

[0040] Reference Figure 2 When the rubber main spring 2 drives the partition 3 to move downward, the partition 3 squeezes the hydraulic medium in the lower chamber 5 downward, and the hydraulic medium in the lower chamber 5 will flow into the upper chamber 4 through the upper liquid hole 7. During the flow of the hydraulic medium, 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, and 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, making the flow of the hydraulic medium between the upper and lower liquid holes smoother, and also avoiding the accelerated erosion of the rubber main spring 2 when there are too many impurities in the hydraulic medium, thereby extending the service life of the rubber main spring 2.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An engine hydraulic mount structure, characterized in that: The invention comprises a housing (1), a rubber main spring (2), and a partition (3); the housing (1) has a sealed chamber; the rubber main spring (2) and the partition (3) are vertically and synchronously slidably arranged in the sealed chamber; a medium chamber is provided below the rubber main spring (2); a hydraulic medium is provided in the medium chamber; a transmission rod (6) extending upward from the top of the rubber main spring (2) and penetrating the housing (1); 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); A vibration-damping gap is provided between the rubber main spring (2) and the partition (3); an upper liquid hole (7) and a lower liquid hole (8) are provided on the partition (3); an upper one-way filter assembly is provided in the upper liquid hole (7); the upper one-way filter assembly is used to allow the hydraulic medium in the lower chamber (5) to flow unidirectionally into the upper chamber (4); a lower one-way filter assembly is provided in the lower liquid hole (8); the lower one-way filter assembly is used to allow the hydraulic medium in the upper chamber (4) to flow unidirectionally into the lower chamber (5); The upper unidirectional filter assembly and the lower unidirectional filter assembly both comprise a sleeve (12), the sleeve (12) being fixedly mounted in the upper liquid hole (7) or the lower liquid hole (8), two round platforms (13) being arranged in the upper and lower parts of the sleeve (12), a sealing sleeve (14) being adapted to the round platforms (13) being arranged at the opening of the sleeve (12), a connecting rod (15) being arranged between the two round platforms (13), and a positioning member for limiting the position of the round platforms (13) being also arranged between the two round platforms (13).

2. The engine hydraulic mount structure according to claim 1, characterized in that: A limiting member for limiting the vertical movement of the rubber main spring (2) is provided in the housing (1).

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); 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 mounted.

4. An engine hydraulic mount structure according to claim 3, characterized in that: The limiting member is a sealing ring (113), which is arranged at the contact point between the upper shell (111) and the lower shell (112) and 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: A threaded column (9) is provided on the bottom of the rubber main spring (2) extending downward, and the partition plate (3) is detachably mounted on the threaded column (9).

6. The engine hydraulic mount structure according to claim 1, characterized in that: The positioning member is a limit block (18), and the limit block (18) is fixedly installed in the sleeve (12).

7. The engine hydraulic mount structure according to claim 1, characterized in that: The positioning member is a filter plate (16), the filter plate (16) is fixedly installed in the sleeve (12), and a spring (17) is provided between the filter plate (16) and the round table (13).

8. The engine hydraulic mount structure according to claim 1, characterized in that: The radius of the top of the inner cone (13) of the upper one-way filter assembly is greater than the radius of its bottom, and the radius of the top of the inner cone (13) of the lower one-way filter assembly is smaller than the radius of its bottom.

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