A liquid transfer pressure sensing automotive steering column safety device

Abstract

The utility model belongs to the technical field of automobile steering column, specifically is a kind of liquid transmission pressure response's automobile steering column safety device, including steering column;The top of steering column is slidably installed with oil storage shell, the both sides of oil storage shell are connected with oil pipe, the side of oil pipe away from oil storage shell is connected with oil storage cavity, the inner wall of oil pipe is close to the side of oil storage cavity and is provided with shunt mechanism, the inner wall of shunt mechanism is provided with push mechanism;Through the setting of fixed ring, split piece, conical plate, sliding rod, first spring and connecting ring, fixed ring can provide stable support for push mechanism, the cooperation of split piece and conical plate can divide hydraulic oil into multiple sections when passing, so as to slow down the impact force of hydraulic oil, to prevent oil storage cavity from being damaged, the cooperation of sliding rod, first spring and connecting ring can push second sealing ball so that it is always sealed with second blocking ring.

Description

Technical Field

[0001] This utility model belongs to the field of automotive steering column technology, specifically a safety device for automotive steering column that senses pressure transmitted by liquid. Background Technology

[0002] In the field of automotive safety technology, the steering column, as a core component connecting the steering wheel and the steering system, has a collision protection performance that is directly related to the driver's life safety.

[0003] Traditional steering column safety devices are mainly divided into two categories: one is a purely mechanical collapsible structure, which relies on a preset break point or compression spring to achieve axial shortening during a collision. However, the collapsible force of this type of device is uncontrollable and can only complete a single collapsible action. It cannot adaptively adjust the buffering effect according to the collision intensity, and is prone to causing secondary injuries to the driver due to insufficient or excessive collapsing. The other type is an electronically controlled hydraulic device, which uses a collision sensor to trigger an electronic control unit (ECU) to control the opening of a solenoid valve to achieve hydraulic oil discharge and steering column collapsing to absorb energy. Although it can optimize the buffering accuracy, it relies on electronic components and a power supply system. In a severe collision, the device may malfunction due to broken wiring or sensor failure. In addition, the addition of electronic components increases the system complexity and the risk of failure. Furthermore, after the buffering is completed, additional electronic commands are required to drive the hydraulic oil to return, and it cannot achieve autonomous reset.

[0004] Therefore, this utility model provides a safety device for automotive steering column that senses pressure transmitted through liquid. Utility Model Content

[0005] To overcome the shortcomings of the prior art and solve at least one of the problems mentioned in the background art, a safety device for automotive steering column with fluid transmission pressure sensing is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A liquid-transmitting pressure-sensing automotive steering column safety device, comprising a steering column; an oil reservoir is slidably mounted on the top of the steering column, and oil supply pipes are connected to both sides of the oil reservoir. An oil storage chamber is connected to the side of the oil supply pipe away from the oil reservoir. A flow-diverting mechanism is provided on the inner wall of the oil supply pipe near the oil storage chamber, and a pushing mechanism is provided on the inner wall of the flow-diverting mechanism. A guide assembly is provided on the inner wall of the oil supply pipe away from the fixed ring, and a guide assembly is provided on the inner wall of the connecting ring. The system includes a pressure relief assembly; the inner wall of the pressure relief assembly is equipped with a return flow mechanism; the flow diversion mechanism includes a fixed ring, a dividing plate, and a conical plate. The fixed ring is fixedly installed on one side of the inner wall of the oil pipeline. Several sets of dividing plates are arranged in a ring and fixedly installed on the inner wall of the fixed ring. One side of each dividing plate is fixedly installed with the conical plate. The fixed ring provides stable support for the pushing mechanism. The combined use of the dividing plate and the conical plate can segment the hydraulic oil into multiple segments as it passes through, thereby reducing the impact force of the hydraulic oil and preventing damage to the oil storage chamber.

[0007] Preferably, the pushing mechanism includes a sliding rod, a first spring, and a connecting ring. Several sets of sliding rods are arranged in a ring and slidably mounted on the inner wall of a fixed ring. One side of the fixed ring is fixedly mounted to the first spring, which is located on the surface of the sliding rod. The end of the sliding rod away from the fixed ring is fixedly mounted to the connecting ring. In this design, the combined use of the sliding rod, the first spring, and the connecting ring can push the second sealing ball to ensure it always seals with the second retaining ring. Therefore, during normal use, hydraulic oil will not flow into the interior of the oil reservoir; it must be impacted to open. Furthermore, no electronic control is required, making it safer.

[0008] Preferably, the guiding assembly includes a guide plate and a groove. Several sets of guide plates are provided, and the several sets of guide plates are fixedly installed in a ring on the inner wall of the oil pipeline away from the fixed ring. The surface of the connecting ring is provided with a groove, and the connecting ring is slidably connected to the surface of the guide plate through the groove. In this scheme, the cooperation between the guide plate and the groove can provide stable limiting for the connecting ring when it slides, so as to prevent it from deviating or shaking, which would cause the second sealing ball to fail to reset, thereby causing oil leakage.

[0009] Preferably, the pressure relief assembly includes a second sealing ball and a second retaining ring. The second sealing ball is fixedly installed on the inner wall of the connecting ring, and the second retaining ring is fixedly installed on one end of the oil supply pipe near the oil reservoir. The second sealing ball and the second retaining ring are movably connected. A through hole is provided on one side of the second sealing ball. In this scheme, the cooperation between the second sealing ball and the second retaining ring can achieve sealing by pushing the mechanism, so that the hydraulic oil inside the oil reservoir will not flow to both sides during normal use.

[0010] Preferably, the return mechanism includes a first retaining ring, a fixed horizontal plate, a second spring, and a first sealing ball. The first retaining ring is fixedly installed on the inner wall of the second sealing ball near the fixed ring. The fixed horizontal plate is fixedly installed on the inner wall of the second sealing ball away from the first retaining ring. The side of the fixed horizontal plate near the first retaining ring is fixedly installed with the second spring, and the side of the second spring away from the fixed horizontal plate is fixedly installed with the first sealing ball. In this scheme, the coordinated use of the first retaining ring, the fixed horizontal plate, the second spring, and the first sealing ball can return the hydraulic oil inside the oil storage chamber to the inside of the oil storage shell after the impact, while also eliminating the need for electronic control and ensuring safety.

[0011] Preferably, the oil pipeline is made of stainless steel. Stainless steel has strong impact resistance and corrosion resistance, which can better ensure the normal transportation of oil. At the same time, its smooth inner wall can also prevent oil residue.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The automotive steering column safety device with liquid transmission pressure sensing described in this utility model, through the arrangement of a fixed ring, a dividing plate, a conical plate, a sliding rod, a first spring, and a connecting ring, enables the fixed ring to provide stable support for the pushing mechanism. The cooperation of the dividing plate and the conical plate can divide the hydraulic oil into multiple segments as it passes through, thereby reducing the impact force of the hydraulic oil and preventing damage to the oil reservoir. The cooperation of the sliding rod, the first spring, and the connecting ring can push the second sealing ball to keep it sealed with the second retaining ring. Thus, during normal use, hydraulic oil will not flow into the interior of the oil reservoir; it must be impacted to open it. At the same time, no electronic control is required, making it safer.

[0014] 2. The automotive steering column safety device with liquid transmission pressure sensing described in this utility model, through the arrangement of a guide plate, a groove, a second sealing ball, and a second retaining ring, enables the guide plate and groove to provide stable limiting for the connecting ring when it slides, so as to prevent it from deviating or shaking, which would cause the second sealing ball to fail to reset and thus cause oil leakage. The cooperation between the second sealing ball and the second retaining ring can achieve sealing by pushing the pushing mechanism, so that the hydraulic oil inside the oil reservoir will not flow to both sides during normal use. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a front perspective view of the present invention;

[0017] Figure 2 This is a partial structural schematic diagram of the oil pipeline in this utility model;

[0018] Figure 3 This is a cross-sectional view of the oil pipeline in this utility model;

[0019] Figure 4 This is a partial exploded view of the fixing ring in this utility model;

[0020] Figure 5 This is a schematic diagram of the reflux mechanism in this utility model.

[0021] Legend:

[0022] 1. Steering column; 2. Oil reservoir; 3. Oil supply pipe; 4. Oil reservoir cavity; 5. Diverting mechanism; 51. Fixing ring; 52. Dividing plate; 53. Conical plate; 6. Pushing mechanism; 61. Sliding rod; 62. First spring; 63. Connecting ring; 7. Guide assembly; 71. Guide plate; 72. Groove; 8. Return mechanism; 81. First retaining ring; 82. Fixing cross plate; 83. Second spring; 84. First sealing ball; 9. Pressure relief assembly; 91. Second sealing ball; 92. Second retaining ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Specific implementation examples are given below.

[0025] like Figures 1 to 5As shown in the embodiment of this utility model, a safety device for a car steering column with liquid transmission pressure sensing includes a steering column 1; an oil reservoir 2 is slidably mounted on the top of the steering column 1, and oil supply pipes 3 are connected to both sides of the oil reservoir 2. An oil storage chamber 4 is connected to the side of the oil supply pipes 3 away from the oil reservoir 2. A flow-diverting mechanism 5 is provided on the inner wall of the oil supply pipes 3 near the oil storage chamber 4, and a pushing mechanism 6 is provided on the inner wall of the flow-diverting mechanism 5; a guiding component 7 is provided on the inner wall of the oil supply pipes 3 away from the fixing ring 51, and a pressure relief component 9 is provided on the inner wall of the connecting ring 63; a return flow mechanism 8 is provided on the inner wall of the pressure relief component 9; and a flow-diverting mechanism 6 is also provided. Structure 5 includes a fixed ring 51, dividing plates 52, and a conical plate 53. The fixed ring 51 is fixedly installed on one side of the inner wall of the oil pipeline 3. Several sets of dividing plates 52 are arranged in a ring and fixedly installed on the inner wall of the fixed ring 51. One side of the dividing plates 52 is fixedly installed with the conical plate 53. The pushing mechanism 6 includes a sliding rod 61, a first spring 62, and a connecting ring 63. Several sets of sliding rods 61 are arranged in a ring and slidably installed on the inner wall of the fixed ring 51. One side of the fixed ring 51 is fixedly installed with the first spring 62, which is located on the surface of the sliding rod 61. The end of the connecting ring 63 away from the fixed ring 51 is fixedly installed with the connecting ring 63. The guide assembly 7 includes a guide plate 71 and a groove 72. Several sets of guide plates 71 are provided. The several sets of guide plates 71 are fixedly installed in a ring on the inner wall of the oil pipe 3 away from the fixed ring 51. The surface of the connecting ring 63 is provided with a groove 72. The connecting ring 63 is slidably connected to the surface of the guide plate 71 through the groove 72. The pressure relief assembly 9 includes a second sealing ball 91 and a second retaining ring 92. The second sealing ball 91 is fixedly installed on the inner wall of the connecting ring 63. The second retaining ring 92 is fixedly installed on the end of the oil pipe 3 near the oil storage tank 2. The sealing ball 91 is movably connected to the second retaining ring 92. A through hole is provided on one side of the second sealing ball 91. The return mechanism 8 includes a first retaining ring 81, a fixed horizontal plate 82, a second spring 83, and a first sealing ball 84. The first retaining ring 81 is fixedly installed on the inner wall of the second sealing ball 91 near the fixed ring 51. The fixed horizontal plate 82 is fixedly installed on the inner wall of the second sealing ball 91 away from the first retaining ring 81. The side of the fixed horizontal plate 82 near the first retaining ring 81 is fixedly installed with the second spring 83. The side of the second spring 83 away from the fixed horizontal plate 82 is fixedly installed with the first sealing ball 84. The oil pipe 3 is made of stainless steel.

[0026] like Figures 1 to 5As shown, the fixed ring 51 provides stable support for the pushing mechanism 6. The cooperation between the dividing plate 52 and the conical plate 53 divides the hydraulic oil into multiple segments as it passes through, thereby reducing the impact force of the hydraulic oil and preventing damage to the oil reservoir 4. The cooperation between the sliding rod 61, the first spring 62, and the connecting ring 63 pushes the second sealing ball 91 to keep it sealed with the second retaining ring 92, so that hydraulic oil will not flow into the interior of the oil reservoir 4 during normal use. It must be impacted to open the reservoir, and it is safer without electronic control. The cooperation between the guide plate 71 and the groove 72 provides stable limiting for the connecting ring 63 when it slides, preventing it from shifting or shaking. This causes the second sealing ball 91 to fail to reset, resulting in oil leakage. The cooperation between the second sealing ball 91 and the second retaining ring 92 can achieve sealing through the pushing mechanism 6, so that the hydraulic oil inside the oil reservoir 2 will not flow to both sides during normal use. The cooperation between the first retaining ring 81, the fixed horizontal plate 82, the second spring 83 and the first sealing ball 84 can discharge the hydraulic oil inside the oil reservoir 4 back into the oil reservoir 2 after the impact, without the need for electronic control, ensuring safety. The stainless steel material has strong impact resistance and corrosion resistance, which can better ensure the normal delivery of oil. At the same time, its smooth inner wall can also prevent oil residue.

[0027] Working principle: During operation, the steering column 1 is first installed in the working position. If the steering column 1 is impacted during use, the hydraulic oil inside the reservoir 2 will be compressed, pushing the second sealing ball 91 towards the fixing ring 51. As the second sealing ball 91 moves, it will drive the connecting ring 63 and compress the first spring 62. Subsequently, the hydraulic oil will flow into the oil supply pipe 3 through the gap between the second sealing ball 91 and the second retaining ring 92. The hydraulic oil will then be divided into multiple segments by the dividing plate 52 and the conical plate 53, thus buffering the impact force of the hydraulic oil. The hydraulic fluid flows into the oil reservoir 4 to release pressure until the impact force is buffered by the hydraulic fluid, thus preventing the steering wheel from injuring the driver during the impact. When all the fluid has flowed into the oil reservoir 4, the first spring 62 will push the second sealing ball 91 to reset so that it can be sealed again. After the impact, the hydraulic fluid will flow back into the oil supply pipe 3 and squeeze the first sealing ball 84 to move it to one side, so that the second spring 83 can be squeezed. At that time, the hydraulic fluid in the oil reservoir 4 will slowly flow back into the oil reservoir 2 through the gap between the first sealing ball 84 and the first retaining ring 81.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A safety device for automotive steering column that senses pressure transmitted through a liquid, comprising a steering column (1); characterized in that: An oil reservoir (2) is slidably installed on the top of the steering column (1). Oil pipes (3) are connected to both sides of the oil reservoir (2). An oil storage chamber (4) is connected to the side of the oil pipe (3) away from the oil reservoir (2). A diversion mechanism (5) is provided on the side of the inner wall of the oil pipe (3) close to the oil storage chamber (4). A pushing mechanism (6) is provided on the inner wall of the diversion mechanism (5). The diversion mechanism (5) includes a fixed ring (51), a dividing plate (52), and a conical plate (53). The fixed ring (51) is fixedly installed on one side of the inner wall of the oil pipeline (3). Several sets of dividing plates (52) are provided. Several sets of dividing plates (52) are fixedly installed in a ring on the inner wall of the fixed ring (51). One side of the dividing plate (52) is fixedly installed with the conical plate (53). The pushing mechanism (6) includes a sliding rod (61), a first spring (62) and a connecting ring (63). The sliding rod (61) is provided in several groups, and the several groups of sliding rods (61) are slidably installed in a ring on the inner wall of the fixed ring (51). One side of the fixed ring (51) is fixedly installed with the first spring (62), and the first spring (62) is located on the surface of the sliding rod (61). The end of the sliding rod (61) away from the fixed ring (51) is fixedly installed with the connecting ring (63).

2. The automotive steering column safety device with liquid-transmitted pressure sensing according to claim 1, characterized in that: A guide assembly (7) is provided on the inner wall of the oil pipeline (3) away from the fixing ring (51), and a pressure relief assembly (9) is provided on the inner wall of the connecting ring (63).

3. A safety device for automotive steering column based on liquid-transmitted pressure sensing according to claim 2, characterized in that: The inner wall of the pressure relief assembly (9) is provided with a reflux mechanism (8).

4. A safety device for automotive steering column based on liquid-transmitted pressure sensing according to claim 3, characterized in that: The guide assembly (7) includes a guide plate (71) and a groove (72). The guide plate (71) is provided in several groups. The several groups of guide plates (71) are fixedly installed in a ring on the inner wall of the oil pipe (3) away from the fixed ring (51). The surface of the connecting ring (63) is provided with a groove (72). The connecting ring (63) is slidably connected to the surface of the guide plate (71) through the opening of the groove (72).

5. A safety device for automotive steering column with liquid-transmitted pressure sensing according to claim 4, characterized in that: The pressure relief assembly (9) includes a second sealing ball (91) and a second retaining ring (92). The second sealing ball (91) is fixedly installed on the inner wall of the connecting ring (63), and the second retaining ring (92) is fixedly installed on one end of the oil pipeline (3) near the oil storage tank (2). The second sealing ball (91) and the second retaining ring (92) are movably connected. A through hole is provided on one side of the second sealing ball (91).

6. A safety device for automotive steering column based on liquid-transmitted pressure sensing according to claim 5, characterized in that: The reflux mechanism (8) includes a first retaining ring (81), a fixed horizontal plate (82), a second spring (83), and a first sealing ball (84). The first retaining ring (81) is fixedly installed on the inner wall of the second sealing ball (91) near the fixed ring (51). The fixed horizontal plate (82) is fixedly installed on the inner wall of the second sealing ball (91) away from the first retaining ring (81). The side of the fixed horizontal plate (82) near the first retaining ring (81) is fixedly installed with the second spring (83). The side of the second spring (83) away from the fixed horizontal plate (82) is fixedly installed with the first sealing ball (84).

7. A safety device for automotive steering column based on liquid-transmitted pressure sensing according to claim 6, characterized in that: The oil pipeline (3) is made of stainless steel.

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