Engine hydraulic mount

Abstract

The application discloses an engine hydraulic suspension, which comprises a first support provided with a through mounting cavity; a rubber main spring accommodated in the mounting cavity, wherein a hydraulic storage groove is formed on the outer peripheral wall of the rubber main spring, and a hydraulic cavity is formed between the hydraulic storage groove and the inner wall of the mounting cavity; wherein the first support is provided with a dry filling hole, and the dry filling hole is communicated with the hydraulic cavity; and the first support is further provided with a reserved hole, which extends to the side of the hydraulic cavity and is not communicated with the hydraulic cavity. The dry filling hole is arranged on the first support instead of the rubber main spring, so that the structural performance of the rubber main spring is not affected, the function effect of the suspension is guaranteed, the dry filling hole arranged on the first support is convenient to process, and the rigid first support is convenient to dock with a filling machine.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts, and in particular to an engine hydraulic mount. Background Technology

[0002] The engine mount is an elastic system that connects the engine to the chassis / frame. Its main functions are to support the engine, limit the engine's output torque and dynamic load, and isolate the vibrations transmitted from the engine to the vehicle body.

[0003] Traditional suspension systems absorb the energy generated by vibration through the deformation of the vulcanized rubber spring. However, some mid-to-high-end models often use hydraulic suspension systems with greater damping. These systems achieve shock absorption by filling the hydraulic chamber of the rubber spring with hydraulic oil, which, combined with the elastic damping of the rubber spring itself, achieves the same effect.

[0004] Existing hydraulic suspensions typically use dry-filling machines for hydraulic oil filling. During filling, the suspension is positioned using tooling fixtures, and the filling machine's pressure head aligns with the dry-filling port. First, a vacuum is evacuated from the hydraulic chamber within the rubber main spring to completely remove air, creating an air-free environment for subsequent filling. Then, the filling mode is switched, and a measured amount of hydraulic oil is injected into the hydraulic chamber through the dry-filling port. Utility model patent CN206234315U discloses "an easily mass-producible shock absorber suspension," which features a process hole, i.e., a dry-filling port, on the upper end of the rubber body.

[0005] However, when opening dry filling holes on the rubber body, the integrity of the rubber body's function must be considered, and the structure of the rubber elastomer must not be damaged. Secondly, after filling, steel balls will be inserted into the dry filling hole to achieve a seal, but since the rubber body has a certain deformation capacity, the effectiveness of the sealing surface cannot be guaranteed. Furthermore, when the filling machine docks with the dry filling hole, the positioning accuracy requirements are relatively high due to the elastic structure. Utility Model Content

[0006] In order to reduce the impact on the function of the suspension itself during dry irrigation, this application provides an engine hydraulic suspension.

[0007] The hydraulic mount for an engine provided in this application adopts the following technical solution: An engine hydraulic mount, comprising: The first bracket has a continuous mounting cavity; A rubber main spring is housed in an installation cavity. The rubber main spring has a hydraulic reservoir on its outer peripheral wall. The hydraulic reservoir and the inner wall of the installation cavity enclose a hydraulic cavity. The first bracket has a dry irrigation hole that connects to the hydraulic chamber; the first bracket also has a reserved hole that extends toward the hydraulic chamber but does not connect to the hydraulic chamber.

[0008] Preferably, the first support includes: A first protrusion, wherein the dry irrigation hole is formed on the first protrusion; and The second boss, the reserved hole is opened on the second boss.

[0009] Preferably, the second boss includes a first segment and a second segment extending outward from the outer peripheral wall of the first bracket, wherein the cross-section of the first segment is polygonal and the cross-section of the second segment is circular.

[0010] Preferably, the hydraulic reservoir comprises: First tank chamber; Second tank chamber; A first flow channel, one end of which is connected to a first tank chamber; and Second flow channel; one end of the second flow channel is connected to the second tank chamber; The first flow channel is connected to the second flow channel, and the dry irrigation hole is connected to the first tank chamber; the reserved hole extends toward the second tank chamber.

[0011] Preferably, the hydraulic reservoir further includes a transition channel connecting the first flow channel and the second flow channel. The first flow channel and the second flow channel are located at the upper and lower outer edges of the outer peripheral wall of the rubber main spring, and the first flow channel and the second flow channel are arranged in parallel.

[0012] Preferably, it also includes a second bracket, wherein the rubber main spring has an installation groove, and one end of the second bracket is engaged in the installation groove.

[0013] Preferably, the mounting groove has a guide groove on the groove wall, and the second bracket has a guide block that is slidably connected to the guide groove.

[0014] Preferably, a rib is provided on the inner wall of the mounting groove, and the rib abuts against the outer peripheral wall of the second bracket.

[0015] Preferably, the rubber main spring has a supporting skeleton inside.

[0016] Preferably, the support frame includes a retainer and a core frame located inside the retainer, and the retainer has through holes.

[0017] In summary, this application includes at least one of the following beneficial technical effects: 1. By opening the dry filling hole on the first bracket instead of the rubber main spring, the structural performance of the rubber main spring itself is not affected, ensuring the suspension function. Furthermore, opening the dry filling hole on the first bracket is easier to process, and the rigid first bracket is more convenient to connect with the filling machine. 2. A reserved hole is made on the first bracket as a spare dry filling hole. When it is put into use, it is only necessary to drill the reserved hole to connect with the second tank chamber. Secondly, the first boss and the second boss are set to facilitate the processing and opening of the dry filling hole and the reserved hole. Furthermore, the second boss is set with a multi-segment structure to allow different filling machine interfaces to be connected, thereby improving the flexibility during dry filling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the engine hydraulic suspension from one perspective. Figure 2 This is a schematic diagram of the engine hydraulic suspension from another perspective. Figure 3 A cross-sectional view of the engine hydraulic mount; Figure 4 This diagram mainly illustrates the distribution of the first groove chamber, the first flow channel, and the second flow channel in the rubber main spring; Figure 5 This is a schematic diagram showing the distribution of the first and second flow channels in the second groove chamber of the rubber main spring; Figure 6 A schematic diagram of the supporting framework; Figure 7 This is an exploded view of the relationship between the second support and the rubber main spring.

[0019] Explanation of reference numerals in the attached drawings: 1. First bracket; 11. First boss; 111. Dry filling hole; 12. First section; 121. Reserved hole; 13. Second section; 2. Rubber main spring; 21. First chamber; 22. Second chamber; 23. First flow channel; 24. Second flow channel; 25. Transition flow channel; 26. Mounting groove; 261. Guide groove; 262. Protruding rib; 3. Second bracket; 31. Guide block; 4. Support frame; 41. Retainer; 411. Through hole; 42. Core frame. Detailed Implementation

[0020] The present application will be further described in detail below with reference to the accompanying drawings.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Figure 1 and Figure 2 The diagram illustrates a hydraulic engine mount structure, comprising a first bracket 1, a second bracket 3, and a rubber main spring 2. The rubber main spring 2 is installed within the first bracket 1 and connected to the second bracket 3. The first bracket 1 and the second bracket 3 are respectively connected to the vehicle frame and the engine, and their installation directions form a certain angle.

[0024] Both the first support 1 and the second support 3 are aluminum supports, formed by die casting. The first support 1 has a first boss 11 and a second boss on its outer peripheral wall, which are circumferentially spaced at a certain angle. The first boss 11 has a dry filling hole 111, and the second boss has a reserved hole 121. The second boss includes a first section 12 and a second section 13 connected to each other. The first section 12 extends outward from the outer peripheral wall of the first support 1, and the second section 13 extends outward from the end face of the first section 12. The cross-section of the first section 12 is polygonal, and the cross-section of the second section 13 is circular. In this embodiment, the cross-section of the first section 12 is rectangular, and the projection of the cross-section of the second section 13 falls into the surface of the first section 12. The first section 12 and the second section 13 can be adapted to different filling machine head shapes.

[0025] Combination Figures 3 to 5 The first bracket 1 has a through mounting cavity, and the rubber main spring 2 is housed within the mounting cavity. The rubber main spring 2 is fixed by riveting the upper and lower outer edges of the first bracket 1. The rubber main spring 2 has a hydraulic reservoir on its outer peripheral wall, comprising a first chamber 21, a second chamber 22, a first flow channel 23, and a second flow channel 24. One end of the first flow channel 23 connects to the first chamber 21, and one end of the second flow channel 24 connects to the second chamber 22. The first flow channel 23 and the second flow channel 24 are respectively located at the upper and lower edges of the rubber main spring 2, and are arranged parallel to each other. The parallel flow channels ensure a balanced distribution of hydraulic oil, resulting in relatively stable damping force and uniform oil pressure distribution, reducing the risk of cracking due to localized pressure concentration.

[0026] The first flow channel 23 and the second flow channel 24 are connected by a transition flow channel 25, thereby enabling the first chamber 21 and the second chamber 22 to communicate with each other. The entire hydraulic reservoir and the inner wall of the mounting cavity of the first bracket 1 enclose a sealed hydraulic chamber. The dry filling hole 111 extends towards the first chamber 21 and is connected to it, allowing hydraulic oil to be injected into the entire hydraulic chamber. The reserved hole 121 is a countersunk hole extending towards the second chamber 22 and is not connected to it. When the dry filling hole 111 fails, it can be completely blocked, and the reserved hole 121 can be used as a backup dry filling hole 111. The reserved hole 121 can be opened to connect to the second chamber 22.

[0027] The rubber main spring 2 also includes a support frame 4 for maintaining the shape of the rubber main spring 2. The support frame 4 includes a generally annular retainer 41 and a core frame 42 inside the retainer 41. The retainer 41 has multiple through holes 411. The retainer 41 and the core frame 42 are formed into the rubber main spring 2 through a vulcanization process. The through holes 411 on the retainer 41 allow the rubber to enter during the vulcanization process, thereby improving the connection strength between the rubber and the retainer 41 after molding.

[0028] The rubber main spring 2 has a mounting groove 26, which is formed by the core frame 42. One end of the second bracket 3 is engaged in the mounting groove 26. The mounting groove 26 also has symmetrical guide grooves 261. The second bracket 3 has a guide block 31 that is slidably connected to the guide groove 261. In order to improve the connection stability between the second bracket 3 and the rubber main spring 2, multiple protruding ribs 262 are also provided on the inner wall of the mounting groove. The protruding ribs 262 abut against the second bracket 3 to increase the friction.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An engine hydraulic mount, characterized in that, include: The first bracket (1) has a through mounting cavity; A rubber main spring (2) is housed in the mounting cavity. The rubber main spring (2) has a hydraulic reservoir on its outer peripheral wall. The hydraulic reservoir and the inner wall of the mounting cavity enclose a hydraulic cavity. The first bracket (1) has a dry irrigation hole (111) which is connected to the hydraulic cavity; the first bracket (1) also has a reserved hole (121) which extends toward the hydraulic cavity and is not connected to the hydraulic cavity.

2. The engine hydraulic mount according to claim 1, characterized in that, The first support (1) includes: The first boss (11) is provided, and the dry grouting hole (111) is provided on the first boss (11); and The second boss, the reserved hole (121) is opened on the second boss.

3. The engine hydraulic mount according to claim 2, characterized in that, The second protrusion includes a first segment (12) and a second segment (13) extending outward from the outer peripheral wall of the first bracket (1). The cross-section of the first segment (12) is polygonal, and the cross-section of the second segment (13) is circular.

4. The engine hydraulic mount according to claim 1, characterized in that, The hydraulic reservoir includes: First tank chamber (21); Second slot chamber (22); A first flow channel (23), one end of which is connected to a first tank chamber (21); and Second flow channel (24); one end of the second flow channel (24) is connected to the second tank chamber (22); The first flow channel (23) is connected to the second flow channel (24), the dry irrigation hole (111) is connected to the first tank chamber (21), and the reserved hole (121) extends toward the second tank chamber (22).

5. The engine hydraulic mount according to claim 4, characterized in that, The hydraulic reservoir also includes a transition channel (25) connecting the first channel (23) and the second channel (24). The first channel (23) and the second channel (24) are located at the upper and lower outer edges of the outer peripheral wall of the rubber main spring (2), and the first channel (23) and the second channel (24) are arranged in parallel.

6. The engine hydraulic mount according to claim 1, characterized in that, It also includes a second bracket (3), the rubber main spring (2) has an installation groove (26), and one end of the second bracket (3) is locked in the installation groove (26).

7. The engine hydraulic mount according to claim 6, characterized in that, The mounting groove (26) has a guide groove (261) on the groove wall, and the second bracket (3) has a guide block (31) that is slidably connected to the guide groove (261).

8. The engine hydraulic mount according to claim 6, characterized in that, The inner wall of the mounting groove (26) is provided with a rib (262), which abuts against the outer peripheral wall of the second bracket (3).

9. The engine hydraulic mount according to claim 1, characterized in that, The rubber main spring (2) has a supporting frame (4) inside.

10. The engine hydraulic mount according to claim 9, characterized in that, The support frame (4) includes a retainer (41) and a core frame (42) located inside the retainer (41), and the retainer (41) has a through hole (411).

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