阅读说明：本技术 一种减振器总成 (Shock absorber assembly ) 是由 祁建伟 张靖 韩冰 姚智 王星 于 2020-05-08 设计创作，主要内容包括：本发明提供了一种减振器总成,涉及车辆电子电器领域。本发明包括具有进水口和出水口的水泵、一端与出水口连接的冷却管以及减振器,减振器沿其轴向设有呈空心筒状的活塞杆,冷却管的另一端插入活塞杆并与活塞杆连接,活塞杆的端部与进水口连接,其中,冷却管的外壁与活塞杆的内壁之间存在间隙,冷却管上设有至少一个贯穿孔,以使冷却管内的冷却液穿过贯穿孔,并从间隙中回流到水泵中,从而降低减振器内的温度。本发明通过将冷却液引进活塞杆中,利用冷却液吸收活塞杆的热量,并且在冷却液吸收完热量后回流到水泵中,因此,本发明可以降低减振器内的温度,且散热效率高。(The invention provides a shock absorber assembly, and relates to the field of vehicle electronic appliances. The invention comprises a water pump with a water inlet and a water outlet, a cooling pipe with one end connected with the water outlet and a shock absorber, wherein the shock absorber is provided with a hollow cylindrical piston rod along the axial direction thereof, the other end of the cooling pipe is inserted into the piston rod and is connected with the piston rod, and the end part of the piston rod is connected with the water inlet, wherein a gap is formed between the outer wall of the cooling pipe and the inner wall of the piston rod, and the cooling pipe is provided with at least one through hole so that cooling liquid in the cooling pipe passes through the through hole and flows back into the water pump from the gap, thereby reducing the. According to the invention, the cooling liquid is introduced into the piston rod, the cooling liquid is used for absorbing the heat of the piston rod, and the cooling liquid flows back to the water pump after absorbing the heat, so that the temperature in the shock absorber can be reduced, and the heat dissipation efficiency is high.)

1. A shock absorber assembly is characterized by comprising a water pump with a water inlet and a water outlet, and a cooling pipe with one end connected with the water outlet; and

the shock absorber is provided with a hollow cylindrical piston rod along the axial direction, the other end of the cooling pipe is inserted into the piston rod and connected with the piston rod, and the end part of the piston rod is connected with the water inlet; wherein the content of the first and second substances,

and a gap is formed between the outer wall of the cooling pipe and the inner wall of the piston rod, and at least one through hole is formed in the cooling pipe, so that cooling liquid in the cooling pipe passes through the through hole and flows back to the water pump from the gap, and the temperature in the shock absorber is reduced.

2. The shock absorber assembly as set forth in claim 1,

the through hole is arranged at a position of the cooling pipe adjacent to the bottom of the piston rod.

3. The shock absorber assembly as set forth in claim 1,

the through holes are arranged in an array mode along the circumferential direction of the cooling pipe.

4. The shock absorber assembly as set forth in claim 3,

the number of the through holes is four.

5. The shock absorber assembly as set forth in claim 1 further comprising:

and the temperature sensor is arranged at the end part of the piston rod and used for detecting the temperature of the cooling liquid flowing out of the piston rod.

6. The shock absorber assembly as set forth in claim 5 further comprising:

and the controller is connected with the temperature sensor and the water pump and is used for controlling the rotating speed of the water pump according to the temperature detected by the temperature sensor.

7. The damper assembly as in claim 6,

the controller is used for increasing the rotating speed of the water pump when the detected temperature is higher than a preset threshold temperature and reducing the rotating speed of the water pump when the detected temperature is lower than the preset threshold temperature.

8. The shock absorber assembly as set forth in claim 7,

the preset threshold temperature is any value within the range of 145-150 ℃.

9. The shock absorber assembly as set forth in claim 1,

the clearance is any value in the range of 0.4mm-0.8 mm.

10. The shock absorber assembly as set forth in claim 1,

the end part of the piston rod is connected with the water inlet through a copper pipe.

Technical Field

The invention relates to the field of vehicle electronic appliances, in particular to a shock absorber assembly.

Background

Disclosure of Invention

The invention aims to provide a shock absorber assembly, which solves the problem of poor heat dissipation of a shock absorber in the prior art.

A further object of the invention is to keep the temperature of the piston rod always within a suitable temperature range.

Particularly, the invention provides a shock absorber assembly, which comprises a water pump with a water inlet and a water outlet, and a cooling pipe with one end connected with the water outlet; and

the shock absorber is provided with a hollow cylindrical piston rod along the axial direction, the other end of the cooling pipe is inserted into the piston rod and connected with the piston rod, and the end part of the piston rod is connected with the water inlet; wherein the content of the first and second substances,

and a gap is formed between the outer wall of the cooling pipe and the inner wall of the piston rod, and at least one through hole is formed in the cooling pipe, so that cooling liquid in the cooling pipe passes through the through hole and flows back to the water pump from the gap, and the temperature in the shock absorber is reduced.

Optionally, the through hole is provided at a position of the cooling pipe adjacent to the bottom of the piston rod.

Optionally, the through holes are arranged in an array along the circumferential direction of the cooling pipe.

Optionally, the number of through holes is four.

Optionally, the method further comprises:

and the temperature sensor is arranged at the end part of the piston rod and used for detecting the temperature of the cooling liquid flowing out of the piston rod.

Optionally, the method further comprises:

and the controller is connected with the temperature sensor and the water pump and is used for controlling the rotating speed of the water pump according to the temperature detected by the temperature sensor.

Optionally, the controller is configured to increase the rotation speed of the water pump when the detected temperature is higher than a preset threshold temperature, and decrease the rotation speed of the water pump when the detected temperature is lower than the preset threshold temperature.

Optionally, the preset threshold temperature is any value in the range of 145 ℃ to 150 ℃.

Optionally, the gap is any value in the range of 0.4mm-0.8 mm.

Optionally, the end of the piston rod is connected to the water inlet via a copper tube.

The invention comprises a water pump with a water inlet and a water outlet, a cooling pipe with one end connected with the water outlet and a shock absorber, wherein the shock absorber is provided with a hollow cylindrical piston rod along the axial direction thereof, the other end of the cooling pipe is inserted into the piston rod and connected with the piston rod, and the end part of the piston rod is connected with the water inlet, wherein a gap is formed between the outer wall of the cooling pipe and the inner wall of the piston rod, and the cooling pipe is provided with at least one through hole so that cooling liquid in the cooling pipe passes through the through hole and flows back into the water pump from the gap, thereby reducing the temperature in. Because most of the oil temperature in the working chamber of the shock absorber is absorbed by the piston rod, cooling the piston rod is equivalent to cooling the oil in the working chamber. According to the invention, the cooling liquid is introduced into the piston rod, the cooling liquid is used for absorbing the heat of the piston rod, and the cooling liquid flows back to the water pump after absorbing the heat, so that the temperature in the shock absorber can be reduced, and the heat dissipation efficiency is high.

Furthermore, the end part of the piston rod is provided with a temperature sensor for detecting the temperature of the cooling liquid flowing out of the piston rod, and the end part of the piston rod is also provided with a controller connected with the temperature sensor and the water pump, and the controller is used for controlling the rotating speed of the water pump according to the temperature detected by the temperature sensor. The invention can keep the temperature of the piston rod in a proper temperature range all the time by detecting the temperature of the cooling liquid in the backflow in real time and adjusting the rotating speed of the water pump.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic block diagram of a shock absorber assembly in accordance with one embodiment of the present invention;

FIG. 2 is a schematic connection of a piston rod and cooling tube of the shock absorber assembly of FIG. 1;

FIG. 3 is a schematic block diagram of the copper tube of the shock absorber assembly shown in FIG. 1;

FIG. 4 is a schematic block diagram of a cooling tube in the shock absorber assembly shown in FIG. 1 illustrating a through-hole.

Figure 5 is a schematic block diagram of the base of the piston rod in the shock absorber assembly shown in figure 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Fig. 1 is a schematic configuration diagram of a shock absorber assembly 100 according to an embodiment of the present invention, in which the direction of arrows is the flow direction of a cooling liquid, and fig. 2 is a schematic connection diagram of a piston rod 31 and a cooling tube 2 in the shock absorber assembly 100 shown in fig. 1. As shown in fig. 1-2, in a specific embodiment, the damper assembly 100 may generally include a water pump 1 having a water inlet 11 and a water outlet 12, a cooling pipe 2 having one end connected to the water outlet 12, and a damper 3, the damper 3 being provided with a piston rod 31 having a hollow cylindrical shape along an axial direction thereof, the other end of the cooling pipe 2 being inserted into the piston rod 31 and connected to the piston rod 31, and an end of the piston rod 31 being connected to the water inlet 11. Wherein, there is the clearance between the inner wall of piston rod 31 and the outer wall of cooling tube 2, is equipped with at least one through-hole 21 on cooling tube 2 to make the coolant liquid in cooling tube 2 pass through-hole 21, and return to water pump 1 from the clearance, thereby reduce the temperature in the shock absorber 3. Wherein the clearance is any value in the range of 0.4mm-0.8 mm. Specifically, the value of the gap may be set according to actual conditions. In addition, the water pump 1 is a micro water pump.

In the present invention, since most of the oil temperature in the working chamber of the shock absorber 3 is absorbed by the piston rod 31, cooling the piston rod 31 is equivalent to cooling the oil in the working chamber. According to the invention, the cooling liquid is introduced into the piston rod 31, the cooling liquid is used for absorbing the heat of the piston rod 31, and the cooling liquid flows back to the water pump 1 after absorbing the heat, so that the temperature in the shock absorber 3 can be reduced, the heat dissipation efficiency is high, and the problems of oil seal bursting and oil leakage caused by high-temperature gasification of oil in the working cavity of the shock absorber 3 are avoided.

Figure 3 is a schematic block diagram of copper tube 6 of shock absorber assembly 100 of figure 1. As shown in fig. 3, and with reference to fig. 1-2, in another embodiment, the end of the piston rod 31 is connected to the water inlet 11 via a copper tube 6. The end of the piston rod 31, the cooling pipe 2, and the copper pipe 6 are connected to each other by a three-way joint 7. Here, since the copper tube 6 has high heat conduction efficiency, it is convenient to rapidly cool the coolant flowing out from the inside of the piston rod 31 in the shock absorber 3, and the cooling speed of the coolant is increased.

Further, the shock absorber assembly 100 further includes a temperature sensor 5 provided at an end of the piston rod 31 for detecting a temperature of the coolant flowing out of the piston rod 31. The present invention can clearly know the temperature inside the piston rod 31 by detecting the temperature of the coolant flowing out of the piston rod 31.

Further, the damper assembly 100 further includes a controller 4 connected to both the temperature sensor 5 and the water pump 1, and the controller 4 is configured to control the rotation speed of the water pump 1 according to the temperature detected by the temperature sensor 5.

Specifically, the controller 4 is configured to increase the rotation speed of the water pump 1 when the detected temperature is higher than a preset threshold temperature, and decrease the rotation speed of the water pump 1 when the detected temperature is lower than the preset threshold temperature. According to the invention, the rotating speed of the water pump 1 can be adjusted according to the temperature of the cooling liquid detected in real time, and when the temperature in the piston rod 31 is high, the cooling liquid can be driven to rapidly circulate, so that the temperature of oil in the shock absorber 3 can be rapidly reduced, and the service life of the shock absorber 3 can be further prolonged. In addition, the temperature of the cooling liquid in the backflow is detected in real time, and the rotating speed of the water pump 1 is adjusted, so that the temperature of the piston rod 31 can be kept in a proper temperature range all the time.

Wherein the preset threshold temperature is any value within the range of 145-150 ℃. Specifically, the maximum temperature inside the piston rod 31 cannot exceed 150 ℃, and in addition, the value of the maximum temperature inside the piston rod 31 can also be set according to actual requirements.

Fig. 4 is a schematic structural view of the cooling pipe 2 in the shock absorber assembly 100 shown in fig. 1, in which the through-hole 21 is shown. As shown in fig. 4, and referring to fig. 1-2, in a preferred embodiment, the through-holes 21 are provided in the cooling tube 2 adjacent to the bottom of the piston rod 31, so that the cooling liquid can flow through the entire interior of the piston rod 31, and the piston rod 31 can be uniformly heat-dissipated. Specifically, the plurality of through holes 21 are arranged in an array along the circumferential direction of the cooling pipe 2. The number of the through holes 21 is four, the four through holes 21 can be uniformly arranged along the circumferential direction of the cooling pipe 2, and also can be staggered up and down along the circumferential direction of the cooling pipe 2, and the diameters of the through holes 21 can be properly increased by the staggered arrangement, so that the cooling liquid in the cooling pipe 2 can rapidly flow into the gap, and the cooling liquid is promoted to rapidly flow.

Figure 5 is a schematic block diagram of the base 32 of the piston rod 31 in the shock absorber assembly 100 shown in figure 1. As shown in fig. 5, and referring to fig. 1-2, in one embodiment, the bottom of the piston rod 31 is provided with a base 32, a fixing hole 321 is formed at the center of the base 32, and the cooling pipe 2 is inserted into the fixing hole 321 to be fixedly connected with the base 32. Specifically, the hollow cylindrical piston rod 31 and the base 32 are both made of steel, and the bottom of the piston rod 31 and the base 32 are connected together by welding and then finish-machined. The cooling liquid enters the piston rod 31 from the through hole 21 of the cooling pipe 2, and then flows out from the piston rod 31. Wherein, the cooling pipe 2 is in interference fit with the fixing hole 321. Before assembly, the base 32 of the piston rod 31 is placed in a relatively hot environment, so that the fixing hole 321 is slightly expanded. Then, the cooling pipe 2 is soaked in liquid nitrogen, so that the outer diameter of the cooling pipe 2 is reduced, and finally, the cooling pipe 2 is installed in the fixing hole 321, and the cooling pipe 2 and the fixing hole 321 become interference fit after the temperature is restored to normal temperature.

In the invention, the water pump 1 pressurizes the cooling liquid to drive the cooling liquid to flow into the piston rod 31 of the damper 3 along the cooling pipe 2, then the cooling liquid flows into the hollow piston rod 31 from the through hole 21 at the tail part of the cooling pipe 2, the cooling liquid is heated after passing through the high-temperature piston rod 31, then enters the three-way joint 7 and flows into the copper pipe 6, and finally flows back to the water pump 1. The cooling liquid circulates back and forth under the driving force of the water pump 1, so that the high-temperature oil in the working cavity of the shock absorber 3 is rapidly cooled. Because the temperature in the working chamber of the shock absorber 3 is the highest, the temperature of the piston rod 31 in the shock absorber 3 is directly reduced by the oil in the working chamber, and the temperature reduction effect is obvious.

In the present invention, since the piston rod 31 has a hollow cylindrical structure, the diameter of the outer wall of the piston rod 31 needs to be increased, so as to ensure the structural rigidity of the piston rod 31. In addition, the hollow cross-sectional area inside the piston rod 31 is at least three times the cross-sectional area of the cooling pipe 2.

Further, in order to make up for the space of expansion after the temperature of the oil in the shock absorber 3 rises in the prior art, the oil in the oil compensation cavity of the shock absorber 3 cannot be filled to a large extent, and the height of the oil in the oil compensation cavity generally reaches half of the length of the cylinder barrel. Therefore, when the damper 3 is cold or inclined, air may be sucked into the damper to emulsify the oil. Because the temperature of the oil in the shock absorber 3 can be timely reduced, the expansion space required by oil gasification is greatly reduced and even disappears, and further the height of the oil in the oil compensation cavity can be increased to four fifths, thereby solving the problem of oil emulsification caused by air suction when the oil in the oil compensation cavity of the shock absorber 3 is filled to be full and gasified and expanded.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.