A runner system that provides both high damping and low moving-to-static ratio

Abstract

A flow channel system capable of providing high damping and low moving-to-static ratio simultaneously comprises a base, a decoupling film and a cover plate, the top of the base is provided with a containing groove; the top of the base is provided with a spiral liquid channel outside the containing groove, and the top of the base is provided with a plurality of self-locking buckles outside the containing groove; the decoupling film is arranged in the containing groove; the cover plate is provided with a liquid inlet communicating with the liquid channel above one end of the liquid channel, and the base is provided with a liquid outlet communicating with the liquid channel at the end of the liquid channel away from the liquid inlet; the cover plate is provided with a plurality of channels inside the first annular protrusion of the decoupling film; the decoupling film comprises a decoupling film main body, the outermost side of the top and bottom of the decoupling film main body is provided with a first annular protrusion, and the middle of the top and bottom of the decoupling film main body is provided with a second annular protrusion; the first annular protrusion is connected with the cover plate and the containing groove in interference, and the second annular protrusion is connected with the cover plate and the containing groove in interference. The application can simultaneously obtain high damping and low moving-to-static ratio.

Description

Technical Field

[0001] This application relates to the field of NVH performance tuning technology for vehicle hydraulic suspension, and in particular to a flow channel system that simultaneously provides high damping and low dynamic-to-static ratio. Background Technology

[0002] The vibrations and noise of a car mainly originate from its engine and transmission, thus giving rise to engine mounts. As the name suggests, engine mounts refer to the shock absorbers connecting the engine to the vehicle body. Unlike conventional shock absorbers, engine mounts are often designed with hydraulic suspension due to the influence of parameters such as engine speed, weight, and torque. Their characteristic is that they can provide better shock absorption. The shock absorption effect comes from the characteristics of its rubber and hydraulic modules. When decoupling the whole vehicle, it is often related to the dynamic stiffness of the mount. The dynamic stiffness varies with different amplitudes and frequencies. Hydraulic mounts can achieve a low dynamic-to-static ratio by using a system of components such as flow channels, decoupling membranes, and cups to decouple energy within the system. However, if the dynamic-to-static ratio is very low, the decoupling membrane will be fully decoupled in the flow channel system. The liquid impact on the decoupling membrane will reduce the liquid in the long flow channel, resulting in widespread damping and poor shock absorption performance under conditions such as bumps and loads.

[0003] In conventional floating flow channel system designs, there is often a 0.45mm gap on one side between the decoupling membrane and the upper and lower flow channel covers. This structure allows the decoupling membrane to be fully decoupled, resulting in a low dynamic-to-static ratio. The drawback is that this structure has very low damping. Nowadays, customers often require damping of 50° or more, while this structure typically has damping between 40-45.

[0004] To this end, we propose a flow channel system that simultaneously provides high damping and a low dynamic-to-static ratio. Utility Model Content

[0005] In response to the shortcomings of the existing production technology, the applicant provides a flow channel system that simultaneously provides high damping and a low dynamic-to-static ratio, enabling the flow channel system to simultaneously provide high damping and a low dynamic-to-static ratio.

[0006] The technical solution adopted in this application is as follows: A flow channel system that simultaneously provides high damping and a low dynamic-to-static ratio includes: The base has a receiving groove on its top; a spiral liquid channel is provided on the top of the base outside the receiving groove; and multiple self-locking buckles are provided on the top of the base outside the receiving groove. A decoupling membrane is placed inside the receiving tank; The cover plate is provided with snap-fit ​​connection holes that match the self-locking snap fastener; The cover plate has an inlet connected to the liquid channel at one end, and the base has an outlet connected to the liquid channel at the end of the liquid channel away from the inlet; the cover plate has multiple channels inside the first annular protrusion of the decoupling membrane. The decoupling membrane includes a decoupling membrane body, with a first annular protrusion provided on the outermost side of the top and bottom of the decoupling membrane body, and a second annular protrusion provided in the middle of the top and bottom of the decoupling membrane body; After the self-locking buckle passes through the buckle connection hole and locks the cover plate, the first annular protrusion is interference-fitted with both the cover plate and the receiving groove, and the second annular protrusion is interference-fitted with both the cover plate and the receiving groove.

[0007] Its further features are: A connecting post is provided inside the receiving groove, and a connecting hole is provided in the middle of the second annular protrusion, with the connecting post located in the connecting hole.

[0008] The interference fit between the first annular protrusion at the top and the cover plate and the interference fit between the first annular protrusion at the bottom and the bottom of the receiving groove are both a, and the interference fit between the second annular protrusion at the top and the cover plate and the interference fit between the second annular protrusion at the bottom and the bottom of the receiving groove are both b; the gap between the top of the decoupling membrane body and the bottom of the cover plate and the gap between the bottom of the decoupling membrane body and the bottom of the receiving groove are both d, d>b=a.

[0009] The interference a is 0.1mm-0.3mm, the interference b is 0.1mm-0.3mm, and the clearance d is 1.2mm-1.8mm.

[0010] The liquid channel is shaped like a "U".

[0011] The decoupling membrane body has a first arc-shaped protrusion and a second arc-shaped protrusion at the top and bottom, respectively, between the first annular protrusion and the second annular protrusion. The gap between the first arc-shaped protrusion and the second arc-shaped protrusion at the top and the cover plate is c; the gap between the first arc-shaped protrusion and the second arc-shaped protrusion at the bottom and the bottom of the receiving groove is also c.

[0012] The gap c is 0-0.5mm.

[0013] The decoupling membrane body is oblong, with a first arc-shaped protrusion and a second arc-shaped protrusion respectively located at both ends of the long side of the decoupling membrane body, and a notch is provided between the first arc-shaped protrusion and the second arc-shaped protrusion.

[0014] The decoupling membrane body is circular, and the first arc-shaped protrusion and the second arc-shaped protrusion together form a ring.

[0015] The beneficial effects of this application are as follows: This application features a compact and reasonable structure, and is easy to operate. When the working chamber above the flow channel system is impacted, liquid flows into the flow channel system. A portion of the liquid enters the decoupling membrane through multiple channels. The first and second annular protrusions are both interference-fitted with the cover plate, allowing the liquid flowing in from the channels to flow between the cover plate and the decoupling membrane body. This prevents the liquid from flowing through the decoupling membrane into the lower chamber, thereby forcing more liquid to flow into the liquid channel from the inlet, ensuring that the decoupling membrane is fully decoupled in the flow channel system, thus obtaining a low dynamic-to-static ratio. The liquid flows along the liquid channel and then flows out from the outlet. The liquid flows through the spiral liquid channel, thereby generating greater damping. The flow channel system simultaneously provides high damping and a low dynamic-to-static ratio.

[0016] In addition, this application also has the following advantages: (1) During the assembly process, the flow channel system locks the cover plate with self-locking buckles and buckle connection holes. This ensures that the decoupling membrane will not shift during the assembly process, thus guaranteeing the sealing between the decoupling membrane and the cover plate and base.

[0017] (2) By setting the first arc-shaped protrusion and the second arc-shaped protrusion, the first arc-shaped protrusion and the second arc-shaped protrusion can block the flow of liquid in the decoupling membrane, thereby reducing the impact noise. Attached Figure Description

[0018] Figure 1 This is an explosion diagram of this application.

[0019] Figure 2 This is a top view of the flow channel system of this application.

[0020] Figure 3 for Figure 2 Schematic diagram of the AA section.

[0021] Figure 4 for Figure 3 Enlarged diagram of point B in the middle.

[0022] Figure 5 This is a top view of the base of this application.

[0023] Figure 6 This is a schematic diagram of one embodiment of the decoupling membrane of this application.

[0024] The components include: 1. base; 2. decoupling membrane; 3. cover plate; 101. Liquid channel; 102. Liquid outlet; 103. Receiving tank; 104. Connecting column; 105. Self-locking buckle; 201. Decoupling membrane body; 202. First annular protrusion; 203. Second annular protrusion; 204. First arc-shaped protrusion; 205. Second arc-shaped protrusion; 301. Liquid inlet; 302. Snap-fit ​​connection hole; 303. Channel. Detailed Implementation

[0025] The specific embodiments of this application are described below with reference to the accompanying drawings.

[0026] like Figures 1-5 As shown, a flow channel system that simultaneously provides high damping and low dynamic-to-static ratio includes a base 1, a decoupling membrane 2, and a cover plate 3.

[0027] The base 1 has a receiving groove 103 at the top, and a connecting column 104 is provided in the receiving groove 103. A liquid channel 101 is provided on the outside of the receiving groove 103 at the top of the base 1, and the liquid channel 101 is spirally arranged.

[0028] In one embodiment, the liquid channel 101 is shaped like a "U".

[0029] The decoupling membrane 2 includes a decoupling membrane body 201. A first annular protrusion 202 is provided on the outermost side of the top and bottom of the decoupling membrane body 201, and a second annular protrusion 203 is provided in the middle of the top and bottom of the decoupling membrane body 201. A connection hole is provided in the middle of the second annular protrusion 203.

[0030] The decoupling membrane 2 is disposed in the receiving groove 103 of the base 1, and the connecting post 104 is located in the connecting hole.

[0031] Two self-locking buckles 105 are provided on the top of the base 1 outside the receiving groove 103.

[0032] The cover plate 3 is positioned above the base 1 and the decoupling membrane 2. The cover plate 3 has a snap-fit ​​connection hole 302 that matches the self-locking snap fastener 105. The self-locking snap fastener 105 passes through the snap-fit ​​connection hole 302 to lock the cover plate 3. This ensures that the decoupling membrane 2 will not shift during assembly, thus guaranteeing the sealing between the decoupling membrane 2, the cover plate 3, and the base 1.

[0033] The cover plate 3 has an inlet 301 above one end of the liquid channel 101, which is connected to the liquid channel 101. The cover plate 3 has multiple channels 303 inside the first annular protrusion 202 of the decoupling membrane 2.

[0034] The base 1 has an outlet 102 at the end of the liquid channel 101 away from the inlet 301, and the outlet 102 is connected to the liquid channel 101. The liquid channel 101 is not connected to the receiving tank 103.

[0035] The top and bottom of the decoupling membrane body 201 are provided with a first arc-shaped protrusion 204 and a second arc-shaped protrusion 205 between the first annular protrusion 202 and the second annular protrusion 203.

[0036] In one embodiment, such as Figure 1As shown, the decoupling membrane body 201 is oblong, and the first arc-shaped protrusion 204 and the second arc-shaped protrusion 205 are respectively provided at both ends of the long side of the decoupling membrane body 201. A notch is provided between the first arc-shaped protrusion 204 and the second arc-shaped protrusion 205 to reduce the strength of the decoupling membrane 2 on the short side, so that the decoupling membrane 2 can also be deformed well on the short side.

[0037] In one embodiment, such as Figure 6 As shown, the decoupling membrane body 201 is circular, and the first arc-shaped protrusion 204 and the second arc-shaped protrusion 205 together form a ring.

[0038] After the self-locking buckle 105 passes through the buckle connection hole 302 and locks the cover plate 3; The first annular protrusion 202 at the top is interference-fitted with the cover plate 3, and the interference amount is a. The first annular protrusion 202 at the bottom is interference-fitted with the bottom of the receiving groove 103, and the interference amount is also a.

[0039] The second annular protrusion 203 at the top is interference-fitted with the cover plate 3, and the interference amount is b; the second annular protrusion 203 at the bottom is interference-fitted with the bottom of the receiving groove 103, and the interference amount is also b. The gap between the first arc-shaped protrusion 204 and the second arc-shaped protrusion 205 at the top and the cover plate 3 is c; the gap between the first arc-shaped protrusion 204 and the second arc-shaped protrusion 205 at the bottom and the bottom of the receiving groove 103 is also c; The gap between the top of the decoupling membrane body 201 and the bottom of the cover plate 3 is d, and the gap between the bottom of the decoupling membrane body 201 and the bottom of the receiving groove 103 is also d.

[0040] d > b = a, and d > c.

[0041] By providing the first arc-shaped protrusion 204 and the second arc-shaped protrusion 205, the first arc-shaped protrusion 204 and the second arc-shaped protrusion 205 can block the flow of liquid in the decoupling membrane 2, thereby reducing the noise of impact.

[0042] In one embodiment, the interference a is 0.1mm-0.3mm, the interference b is 0.1mm-0.3mm, the gap c is 0-0.5mm, and the gap d is 1.2mm-1.8mm.

[0043] like Figure 5 As shown in the figure, the red part is the liquid channel 101.

[0044] During assembly, the flow channel system locks the cover plate 3 with self-locking buckles 105 and buckle connection holes 302. This prevents the decoupling membrane 2 from shifting during assembly, ensuring the seal between the decoupling membrane 2, the cover plate 3, and the base 1. When the working chamber above the flow channel system is impacted, liquid flows into the flow channel system. A portion of the liquid enters the decoupling membrane 2 through multiple channels 303. The first annular protrusion 202 and the second annular protrusion 203 are both interference-fitted with the cover plate 3, allowing the liquid flowing in from the channels 303 to flow between the cover plate 3 and the decoupling membrane body 201. This prevents the liquid from flowing through the decoupling membrane 2 into the lower chamber, thereby forcing more liquid to flow from the inlet 301 into the liquid channel 101, ensuring that the decoupling membrane 2 is fully decoupled in the flow channel system, thus achieving a lower dynamic-to-static ratio. The liquid flows along the liquid channel 101 and then flows out from the outlet 102. The liquid flows through the spiral liquid channel 101, generating significant damping.

[0045] In one embodiment, the flow channel system achieves damping of over 50, while the dynamic-to-static ratio can be around 1.6, thus providing both high damping and a low dynamic-to-static ratio.

[0046] The above description is an explanation of this application and not a limitation thereof. The scope of this application is defined by the claims. Within the scope of protection of this application, any form of modification may be made.

Claims

1. A flow channel system that simultaneously provides high damping and a low dynamic-to-static ratio, characterized in that, include: The base (1) has a receiving groove (103) on its top; a spiral liquid channel (101) is provided on the top of the base (1) outside the receiving groove (103); and multiple self-locking buckles (105) are provided on the top of the base (1) outside the receiving groove (103). A decoupling membrane (2) is disposed in a receiving tank (103); The cover plate (3) is provided with a buckle connection hole (302) that matches the self-locking buckle (105); Among them, the cover plate (3) is provided with an inlet (301) communicating with the liquid channel (101) above one end of the liquid channel (101), and the base (1) is provided with an outlet (102) communicating with the liquid channel (101) at the end of the liquid channel (101) away from the inlet (301); the cover plate (3) is provided with multiple channels (303) inside the first annular protrusion (202) of the decoupling membrane (2); The decoupling membrane (2) includes a decoupling membrane body (201), with a first annular protrusion (202) provided on the outermost side of the top and bottom of the decoupling membrane body (201), and a second annular protrusion (203) provided in the middle of the top and bottom of the decoupling membrane body (201); After the self-locking buckle (105) passes through the buckle connection hole (302) and locks the cover plate (3), the first annular protrusion (202) is interference-fitted with the cover plate (3) and the receiving groove (103), and the second annular protrusion (203) is interference-fitted with the cover plate (3) and the receiving groove (103).

2. The flow channel system as described in claim 1, which simultaneously provides high damping and low dynamic-to-static ratio, is characterized in that: A connecting post (104) is provided in the receiving groove (103), and a connecting hole is provided in the middle of the second annular protrusion (203), with the connecting post (104) located in the connecting hole.

3. A flow channel system that simultaneously provides high damping and low dynamic-to-static ratio as described in claim 1, characterized in that: The interference fit between the first annular protrusion (202) at the top and the cover plate (3) and the interference fit between the first annular protrusion (202) at the bottom and the bottom of the receiving groove (103) are both a, and the interference fit between the second annular protrusion (203) at the top and the cover plate (3) and the interference fit between the second annular protrusion (203) at the bottom and the bottom of the receiving groove (103) are both b; the gap between the top of the decoupling membrane body (201) and the bottom of the cover plate (3) and the gap between the bottom of the decoupling membrane body (201) and the bottom of the receiving groove (103) are both d, d>b=a.

4. A flow channel system that simultaneously provides high damping and low dynamic-to-static ratio as described in claim 3, characterized in that: The interference a is 0.1mm-0.3mm, the interference b is 0.1mm-0.3mm, and the clearance d is 1.2mm-1.8mm.

5. A flow channel system as described in claim 1 that simultaneously provides high damping and a low dynamic-to-static ratio, characterized in that: The liquid channel (101) is in the shape of a "U".

6. A flow channel system as described in claim 1 that simultaneously provides high damping and a low dynamic-to-static ratio, characterized in that: The decoupling membrane body (201) has a first arc-shaped protrusion (204) and a second arc-shaped protrusion (205) between the first annular protrusion (202) and the second annular protrusion (203) at the top and bottom. The gap between the first arc-shaped protrusion (204) and the second arc-shaped protrusion (205) at the top and the cover plate (3) is c; the gap between the first arc-shaped protrusion (204) and the second arc-shaped protrusion (205) at the bottom and the bottom of the receiving groove (103) is also c.

7. A flow channel system as described in claim 6 that simultaneously provides high damping and a low dynamic-to-static ratio, characterized in that: The gap c is 0-0.5mm.

8. A flow channel system as described in claim 6 that simultaneously provides high damping and a low dynamic-to-static ratio, characterized in that: The decoupling membrane body (201) is oblong, and the first arc-shaped protrusion (204) and the second arc-shaped protrusion (205) are respectively disposed at both ends of the long side of the decoupling membrane body (201), and a notch is provided between the first arc-shaped protrusion (204) and the second arc-shaped protrusion (205).

9. A flow channel system as described in claim 6 that simultaneously provides high damping and a low dynamic-to-static ratio, characterized in that: The decoupling membrane body (201) is circular, and the first arc-shaped protrusion (204) and the second arc-shaped protrusion (205) together form an annulus.

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