Active suspension of engine

Abstract

The utility model relates to an engine active suspension which comprises a connecting shaft, a connecting shell, an upper shell and a lower shell, a rubber main spring is connected between the connecting shell and the upper shell in a vulcanization mode, a channel support is further installed in the upper shell, a vibrating diaphragm is installed in the middle of the channel support and comprises a rubber diaphragm on the edge and a decoupling disc in the center, and the rubber diaphragm is connected with the lower shell in a vulcanization mode. The bottom of the decoupling disc is provided with an actuator in a threaded mode, a shaping ring is further arranged at the connecting position of the rubber membrane and the decoupling disc, and a plurality of limiting structures are arranged on the upper portion and the lower portion of the shaping ring correspondingly. The sliding block can be limited to only slide up and down through the vertical shaft, and the sliding block is connected with the shaping ring in the vibrating membrane through the connecting rod; therefore, the vibrating diaphragm can be limited to only generate longitudinal wave vibration up and down, the actuator can be ensured to stably generate action cooperation, the influence on the actuator can be reduced, and the service life is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of automotive parts, and particularly to an engine active mount. Background Art

[0002] In recent years, with the development of automotive design towards high torque and lightweight, the vibration transmission between the engine and the vehicle body has intensified, deteriorating the NVH characteristics of the whole vehicle, making it impossible for traditional passive mounts to well meet the vibration isolation requirements between the engine and the vehicle frame. The introduction of an active control hydraulic mount (referred to as an active mount) can very effectively isolate the transmission of engine vibration and noise into the vehicle interior. Compared with traditional passive mounts and other forms of active mounts, this active mount has very obvious advantages: (1) It can very effectively isolate the transmission of engine vibration and noise, especially the vibration at engine idle speed; (2) The structure is more compact and more suitable for installation; (3) It works reliably. In the case of the failure of the active component, it still has the vibration isolation performance of a passive hydraulic mount; (4) It consumes less energy and can be within the range of on-vehicle energy use.

[0003] However, in actual applications, in an active mount, there is a vibration diaphragm. The pressure received by the hydraulic oil will cause the vibration diaphragm to vibrate and transmit to the actuator. The existing vibration diaphragm has longitudinal wave vibration and transverse wave vibration. The longitudinal wave vibration will trigger the actuator to act, while the transverse wave vibration cannot cause the actuator to act and may also lead to a decrease in the sensitivity of the actuator main shaft.

[0004] Therefore, those skilled in the art have provided an engine active mount to solve the problems raised in the above background art. Utility Model Content

[0005] To solve the problems raised in the above background art, the present application provides an engine active mount.

[0006] The engine active mount provided by the present application adopts the following technical solutions:

[0007] An engine active mount includes a connecting shaft, a connecting housing, an upper housing and a lower housing. A rubber main spring is vulcanized and connected between the connecting housing and the upper housing. A channel bracket is also installed in the upper housing. A vibration diaphragm is installed in the middle of the channel bracket. The vibration diaphragm includes a rubber film at the edge and a decoupling disc at the center. An actuator is installed at the bottom of the decoupling disc by threading. A shaping ring is also provided at the connection between the rubber film and the decoupling disc. A plurality of limiting structures are provided above and below the shaping ring.

[0008] Further, the limiting structure includes a limiting groove opened on the inner side of the channel bracket. A vertical shaft is installed in the limiting groove. A slider is sleeved on the vertical shaft. The slider and the limiting groove are connected by a buffer spring. A connecting rod is also connected to the slider and is fixedly connected to the shaping ring.

[0009] Furthermore, the channel bracket is divided into upper and lower parts. The rubber membrane is pressed between the upper and lower parts, and a spiral fluid channel is provided through the upper and lower parts of the channel bracket. A bottom membrane is also press-fitted between the bottom of the channel bracket and the lower housing.

[0010] Furthermore, a buckle cylinder is installed on the top of the channel bracket. A plurality of support seats are evenly arranged on the inner wall of the buckle cylinder. A plurality of support feet are divergently connected to the bottom end of the connecting shaft. The support feet are correspondingly arranged in the support seats, and the support feet and the support seats are connected by conduction springs.

[0011] Furthermore, a protrusion is provided on the top of the outer edge of the upper housing, and an invisible groove for cooperating with the main rubber spring is provided inside the protrusion.

[0012] In summary, the present application includes the following beneficial technical effects:

[0013] 1. The present application is provided with a limiting structure on the vibration membrane. The vertical shaft can limit the slider to slide only up and down, and the slider is connected to the shaping ring in the vibration membrane through a connecting rod. Furthermore, the vibration membrane can be limited to generate only longitudinal wave vibrations up and down, which can ensure the stable operation of the actuator and reduce the impact on the actuator, thus prolonging the service life.

[0014] 2. The present application also installs a buckle cylinder on the top of the channel bracket. A support seat for cooperating with the support feet is arranged inside the buckle cylinder. The vibration transmitted through the connecting shaft can act on the buckle cylinder, thereby causing the vibration of the hydraulic oil and facilitating the accurate transmission of vibration signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic cross-sectional view of the internal structure of the present application;

[0016] Figure 2 is a schematic structural view of the cooperation between the connecting shaft and the buckle cylinder of the present application;

[0017] Figure 3 is the present application Figure 2 is a disassembled schematic view of the structure in;

[0018] Figure 4 is a schematic structural view of the vibration membrane of the present application;

[0019] Figure 5 is the present application Figure 1 is a schematic structural view of part A in;

[0020] Figure 6 is the present application Figure 1 is a schematic structural view of part B in;

[0021] Figure 7This is the present application Figure 1 It is a schematic structural diagram of part C in the present application.

[0022] Explanation of reference numerals in the drawings: 1. Connecting shaft; 11. Supporting leg; 12. Conductive spring; 2. Connecting housing; 3. Rubber main spring; 4. Upper housing; 41. Protrusion; 5. Lower housing; 6. Buckle cylinder; 61. Support base; 7. Channel bracket; 8. Diaphragm; 81. Decoupling disc; 82. Rubber film; 83. Shaping ring; 84. Link rod; 85. Slide block; 86. Buffer spring; 87. Vertical shaft; 9. Bottom film; 10. Actuator. Detailed implementation manners

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] Embodiment 1

[0025] Referring to Figures 1 - 7 As shown, the present application discloses an engine active mount, which includes a connecting shaft 1, a connecting housing 2, an upper housing 4 and a lower housing 5. A rubber main spring 3 is vulcanized and connected between the connecting housing 2 and the upper housing 4. A channel bracket 7 is also installed in the upper housing 4. A diaphragm 8 is installed in the middle of the channel bracket 7. The channel bracket 7 is divided into upper and lower parts. The rubber film 82 is pressed between the upper and lower parts, and a fluid channel is also spirally formed through the upper and lower parts of the channel bracket 7. A bottom film 9 is also press-fitted between the bottom of the channel bracket 7 and the lower housing 5. The diaphragm 8 includes a rubber film 82 at the edge and a decoupling disc 81 at the center. An actuator 10 is installed at the bottom of the decoupling disc 81 by threading. A shaping ring 83 is also provided at the connection between the rubber film 82 and the decoupling disc 81. A plurality of limiting structures are provided above and below the shaping ring 83;

[0026] Specifically, the channel bracket 7 can limit the diaphragm 8. The pressure transmitted by the connecting shaft 1 acts on the hydraulic oil, and the hydraulic oil then causes the diaphragm 8 to vibrate, thereby transmitting the vibration to the actuator 10. The limiting structure includes a limiting groove opened on the inner side of the channel bracket 7. A vertical shaft 87 is installed in the limiting groove. A slide block 85 is sleeved on the vertical shaft 87. The slide block 85 is connected to the limiting groove through a buffer spring 86. A link rod 84 is also connected to the slide block 85. The link rod 84 is fixedly connected to the shaping ring 83. Under the action of the vertical shaft 87, the slide block 85 can only slide up and down, and due to the limitation of the link rod 84, the diaphragm 8 can only vibrate up and down, which can reduce the damage to the actuator 10 while accurately triggering the action of the actuator 10.

[0027] Referring to Figure 1 、Figure 2 , Figure 3 As shown in Figure 3 , a buckle cylinder 6 is further installed on the top of the channel bracket 7. A plurality of support seats 61 are evenly arranged on the inner wall of the buckle cylinder 6. A plurality of support feet 11 are divergently connected to the bottom end of the connecting shaft 1. The support feet 11 are correspondingly arranged in the support seats 61, and the support feet 11 and the support seats 61 are connected by a conduction spring 12. By providing the buckle cylinder 6, the inside of the rubber main spring 3 can be supported, and the internal space can be supported. The pressure on the connecting shaft 1 can be transmitted to the support seat 61 and the inside of the buckle cylinder 6 through the support feet 11. While transmitting the pressure, the connecting shaft 1 can be stably supported.

[0028] Referring to Figure 1 , Figure 7 As shown in Figure 7 , a protrusion 41 is further provided on the top of the outer edge of the upper housing 4. An invisible groove for cooperating with the rubber main spring 3 is provided inside the protrusion 41. In addition, the protrusion 41 provided on the outer edge of the upper housing 4 can form an invisible groove, which is convenient for wrapping the vulcanized rubber main spring 3.

[0029] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0030] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0031] The implementation principle of an engine active mount in this application is as follows:

[0032] During use, the connecting shaft 1 can transmit the pressure to the support seat 61 through the support feet 11 at the bottom. The provided buckle cylinder 6 can, on the one hand, expand the internal space, and on the other hand, can stably support the connecting shaft 1. The transmitted pressure can cause the vibration membrane 8 to vibrate through the hydraulic oil. Since the provided vertical shaft 87 can limit the slider 85, it is ensured that the slider 85 can only slide up and down. With the cooperation of the connecting rod 84, the vibration membrane 8 can be restricted to generate only longitudinal wave vibration up and down, which can accurately trigger the actuator 10 to act while reducing the damage to the actuator 10 and extending the service life.

[0033] In addition, the conduction spring 12 provided between the support feet 11 and the support seats 61 can perform preliminary buffering while transmitting the pressure, reducing the pressure, and the buffer spring 86 provided between the slider 85 and the limiting groove can further buffer, which can reduce the load on the actuator 10.

[0034] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An active engine mount, comprising a connecting shaft (1), a connecting housing (2), an upper housing (4) and a lower housing (5), wherein a rubber main spring (3) is vulcanized and connected between the connecting housing (2) and the upper housing (4), a channel bracket (7) is also installed in the upper housing (4), and a vibration membrane (8) is installed in the middle of the channel bracket (7), characterized in that: The vibration membrane (8) comprises a rubber membrane (82) at the edge and a decoupling disk (81) at the center, an actuator (10) is threadedly mounted on the bottom of the decoupling disk (81), a shaping ring (83) is also provided at the connection between the rubber membrane (82) and the decoupling disk (81), and a plurality of limiting structures are provided above and below the shaping ring (83).

2. The active engine mount according to claim 1, characterized in that: The limiting structure comprises a limiting groove formed on the inner side of the channel bracket (7), a vertical shaft (87) being installed in the limiting groove, a sliding block (85) being sleeved on the vertical shaft (87), the sliding block (85) and the limiting groove being connected via a buffer spring (86), and a connecting rod (84) being connected to the sliding block (85), and the connecting rod (84) being fixedly connected to the shaping ring (83).

3. The active engine mount according to claim 1, characterized in that: The channel support (7) is divided into two parts, an upper part and an lower part, a rubber membrane (82) is pressed between the two parts, and a fluid channel is provided in a spiral shape through the upper and lower parts of the channel support (7), and a bottom membrane (9) is also pressed between the bottom of the channel support (7) and the lower shell (5).

4. The active engine mount according to claim 1, characterized in that: A buckle tube (6) is also installed on the top of the channel bracket (7), and a plurality of support seats (61) are evenly arranged on the inner wall of the buckle tube (6). A plurality of support legs (11) are connected to the bottom end of the connecting shaft (1) in a divergent manner. The support legs (11) are arranged in a one-to-one correspondence in the support seats (61), and the support legs (11) and the support seats (61) are connected via a conductive spring (12).

5. The active engine mount according to claim 1, characterized in that: A protrusion (41) is also provided at the top of the outer edge of the upper shell (4), and an invisible groove matching the rubber main spring (3) is provided inside the protrusion (41).

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