Valve shell assembly, active shock absorber and shock absorber oil way system

Abstract

The invention relates to the technical field of shock absorbers, and provides a valve shell assembly, an active shock absorber and a shock absorber oil way system. The valve shell assembly is applied to the active shock absorber and comprises a valve shell body, and an inner cavity of the valve shell body is provided with a pair of first connectors used for being communicated with a shock absorber oil pump unit, a pair of second connectors used for being communicated with an inner oil way of the shock absorber and a pair of third connectors used for being communicated with an external oil injection unit; the duplex ball valve is arranged in the inner cavity of the valve shell body, the duplex ball valve comprises a pair of connected ball valves and a switch connected with the pair of ball valves, and the switch can drive the pair of ball valves to rotate to be communicated with the first connector and the second connector or rotate to be communicated with the first connector and the third connector. According to the valve shell assembly, the requirement for connection of an internal oil way of the shock absorber and an external oil pump unit can be met, and the active adjusting function of the active shock absorber is achieved; and the oil pump unit can be connected with an external oil injection unit, and the purposes of injecting oil into the oil pump unit and replacing system oil when necessary are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorbers, in particular to a valve housing assembly, an active shock absorber and a shock absorber oil circuit system. Background Art

[0002] In active suspension technology, active shock absorbers are used to achieve the purpose of active adjustment. The active shock absorber adjusts the amount of oil in the working chamber through an external oil pump to control the movement of the piston rod and adjust the height of the vehicle body.

[0003] In the oil circuit system of the active shock absorber, there are two oil channels for inlet and outlet to form a working circuit between the internal oil circuit of the shock absorber and the external oil pump. When the pipeline where the external oil pump is located needs to be filled with oil, changed with oil, etc., an external oil filling unit must be connected. This makes the oil circuit layout of the active shock absorber complicated, and a new valve housing design is required to achieve the connection between the internal oil circuit of the shock absorber and the external oil pump, and to meet the purpose of filling oil into the pipeline where the external oil pump is located, and changing the system oil when necessary.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The present invention provides a valve housing assembly, an active shock absorber and a shock absorber oil circuit system, which can meet the connection between the inlet and outlet of the internal oil circuit of the shock absorber and the inlet and outlet interface of the external oil pump unit, thereby realizing the active adjustment function of the active shock absorber; and can realize the connection between the inlet and outlet interface of the oil pump unit and the inlet and outlet interface of the external oil injection unit, thereby meeting the purpose of injecting oil into the oil pump unit and replacing the system oil when necessary.

[0006] According to one aspect of the present invention, there is provided a valve housing assembly for use in an active shock absorber, comprising: a valve housing body, the inner cavity of the valve housing body being provided with a pair of first interfaces for connecting to an oil pump unit of the shock absorber, a pair of second interfaces for connecting to an internal oil circuit of the shock absorber, and a pair of third interfaces for connecting to an external oil injection unit; a double ball valve being arranged in the inner cavity of the valve housing body, the double ball valve comprising a pair of connected ball valves and a switch connected to the pair of ball valves, the switch being capable of driving the pair of ball valves to rotate until the pair of first interfaces are connected to the pair of second interfaces, or to rotate until the pair of first interfaces are connected to the pair of third interfaces.

[0007] In some embodiments, each of the ball valves includes a spherical body and a flow channel opened in the spherical body, and the flow channel has three openings respectively used to cooperate with the first interface, the second interface, and the third interface.

[0008] In some embodiments, the second interface is located in the middle of the valve housing body, and the first interface and the third interface are distributed on both sides of the valve housing body; the flow channel of each ball valve forms a T-shaped channel.

[0009] In some embodiments, each of the ball valves includes a hemispherical body; the hemispherical body can block the third interface and connect the first interface with the second interface, or the hemispherical body can block the second interface and connect the first interface with the third interface.

[0010] In some embodiments, the hemispherical body is a perfect hemisphere, larger than a perfect hemisphere, or smaller than a perfect hemisphere.

[0011] In some embodiments, the valve housing assembly further includes: a first sealing valve, disposed in the third interface; in a natural state, the first sealing valve blocks the third interface.

[0012] In some embodiments, the first sealing valve includes a first valve member, a first spring and a first ejector pin; under the action of the first spring, the first valve member is pressed against to seal the third interface; when the first ejector pin pushes the first valve member to push open the first spring, the third interface is connected.

[0013] According to another aspect of the present invention, an active shock absorber is provided, wherein the active shock absorber is equipped with a valve housing assembly as described in any of the above embodiments; wherein the valve housing assembly is connected to a shock absorber body of the active shock absorber by assembly or integral processing, and an inlet and outlet of an internal oil circuit of the active shock absorber is connected to a pair of second interfaces of the valve housing assembly.

[0014] According to another aspect of the present invention, a shock absorber oil circuit system is provided, comprising: an active shock absorber as described in the above embodiment; an external oil pump unit, the inlet and outlet interfaces of the oil pump unit are connected to a pair of first interfaces of a valve housing assembly of the active shock absorber; and a detachable external oil injection unit, the inlet and outlet interfaces of the external oil injection unit are connected to a pair of third interfaces of the valve housing assembly.

[0015] In some embodiments, a first sealing valve is provided in the third interface, and the first sealing valve includes a first valve component, a first spring and a first ejector pin. When the first ejector pin pushes the first valve component to push open the first spring, the third interface is connected; the interface of the external oil injection unit is provided with a second sealing valve, and the second sealing valve includes a second valve component, a second spring and a second ejector pin. When the second ejector pin pushes the second valve component to push open the second spring, the interface of the external oil injection unit is connected; when the interface of the external oil injection unit is connected to the third interface, the first ejector pin and the second ejector pin push each other to make the interface of the external oil injection unit connected to the third interface.

[0016] The beneficial effects of the present invention compared with the prior art include at least:

[0017] The valve housing assembly of the present invention adopts a double ball valve, and a pair of ball valves are controlled to rotate by switches to connect a pair of first interfaces with a pair of second interfaces. At this time, the inlet and outlet of the internal oil circuit of the shock absorber can be connected with the inlet and outlet interfaces of the external oil pump unit, thereby realizing the active adjustment function of the oil pump unit on the active shock absorber; by controlling the rotation of a pair of ball valves by switches, a pair of first interfaces can also be connected with a pair of third interfaces. At this time, the inlet and outlet interfaces of the oil pump unit can be connected with the inlet and outlet interfaces of the external oil injection unit, thereby meeting the purpose of injecting oil into the oil circuit system and replacing the system oil when necessary.

[0018] In the double ball valve of the present invention, a pair of ball valves are connected, and the switch synchronously controls the rotation of the pair of ball valves to change the position of the pair of ball valves in the valve housing body, thereby playing the function of conducting and locking the internal oil circuit of the shock absorber and connecting different flow channels.

[0019] The valve housing assembly of the present invention has a simple structure, stable functions, and convenient operation. It can meet the active adjustment function of the active suspension technology and achieve the purposes of oiling, changing oil, and exhausting the oil circuit system of the active shock absorber, thereby improving the working performance of the active shock absorber.

[0020] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the specification are used to explain the principles of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0022] Figure 1 A schematic diagram showing the structure of a valve housing assembly connected to an active shock absorber in an embodiment of the present invention;

[0023] Figure 2 and Figure 3 A schematic cross-sectional view of the valve housing assembly in an embodiment of the present invention is shown;

[0024] Figure 4 and Figure 5 A schematic cross-sectional view of a double ball valve of a valve housing assembly according to an embodiment of the present invention is shown;

[0025] Figure 6 A schematic structural diagram showing a first sealing valve of a valve housing assembly in an embodiment of the present invention;

[0026] Figure 7 A schematic diagram showing the connection between the valve housing assembly and the external oil injection unit in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art.

[0028] The accompanying drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar structures, and thus their repeated descriptions will be omitted. The words "first", "second" and similar terms used in the specific description do not indicate any order, quantity or importance, but are only used to distinguish different components. In addition, when it is said that a device is "connected" to another device, this includes not only the case of direct connection, but also the case of indirect connection through other elements.

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and features in different embodiments may be combined with each other.

[0030] Figure 1 The structure of the valve housing assembly connected to the active shock absorber is shown in the figure. Figure 2 and Figure 3 The cross-sectional structure of the valve housing assembly is shown in FIG. Figure 4 and Figure 5 The cross-sectional structure of the double ball valve of the valve housing assembly is shown; wherein, Figure 2 and Figure 3 correspond Figure 1 AA section view, Figure 2 and Figure 4 The first position of the double ball valve is shown. Figure 3 and Figure 5 The second position state of the double ball valve is shown schematically.

[0031] Combination Figures 1 to 5As shown, the valve housing assembly 100 applied to the active shock absorber provided by the embodiment of the present invention includes:

[0032] A valve housing body 120, the inner cavity of the valve housing body 120 is provided with a pair of first interfaces 121 for connecting to the shock absorber oil pump unit, a pair of second interfaces 122 for connecting to the internal oil circuit of the shock absorber, and a pair of third interfaces 123 for connecting to the external oil injection unit;

[0033] The double ball valve 130 is arranged in the inner cavity of the valve housing body 120. The double ball valve 130 includes a pair of connected ball valves 131 and a switch 132 connected to the pair of ball valves 131. The switch 132 can drive the pair of ball valves 131 to rotate to connect a pair of first interfaces 121 with a pair of second interfaces 122, or to rotate to connect a pair of first interfaces 121 with a pair of third interfaces 123.

[0034] The valve housing assembly 100 as a whole can be connected to the shock absorber body 200 of the active shock absorber by means of assembly or integral processing through the connecting portion 110. The valve housing assembly 100 of the present invention adopts a double ball valve 130, and controls the rotation of a pair of ball valves 131 through a switch 132, so that a pair of first interfaces 121 are connected to a pair of second interfaces 122, such as Figure 2 and Figure 4 As shown, at this time, the inlet and outlet of the internal oil circuit of the shock absorber can be connected to the inlet and outlet interface of the external oil pump unit to realize oil exchange and realize the active adjustment function of the oil pump unit on the active shock absorber. By controlling the rotation of a pair of ball valves 131 by switches 132, a pair of first interfaces 121 and a pair of third interfaces 123 can also be connected, such as Figure 3 and Figure 5 As shown; among them, Figure 3 The third interface 123 of the valve housing assembly 100 shown is not connected to the external oil injection unit, but is in a closed state; if the third interface 123 is connected to the external oil injection unit, the third interface 123 is opened, and the inlet and outlet interfaces of the oil pump unit can be connected to the inlet and outlet interfaces of the external oil injection unit to realize oil exchange, thereby meeting the purpose of injecting oil into the oil circuit system and replacing the system oil when necessary.

[0035] In the double ball valve 130 of the present invention, a pair of ball valves 131 are connected, and the switch 132 synchronously controls the rotation of the pair of ball valves 131 to change the position of the pair of ball valves 131 in the valve housing body 120, thereby playing the function of conducting and locking the internal oil circuit of the shock absorber and connecting different flow channels.

[0036] The switch 132 may be an electric switch or a manual knob switch.

[0037] The valve housing assembly 100 of the present invention has a simple structure, stable functions, and convenient operation. It can meet the active adjustment function of the active suspension technology and achieve the purposes of oiling, oil changing, and exhausting the oil circuit system of the active shock absorber, thereby improving the working performance of the active shock absorber.

[0038] In some embodiments, each ball valve 131 includes a spherical body and a flow channel opened in the spherical body, and the flow channel has three openings respectively used to cooperate with the first interface 121, the second interface 122 and the third interface 123. When the spherical body rotates in the valve housing body 120, the flow channel can connect the first interface 121 and the second interface 122, or connect the first interface 121 and the third interface 123.

[0039] In some embodiments, the second interface 122 is located in the middle of the valve housing body 120 , and the first interface 121 and the third interface 123 are distributed on both sides of the valve housing body 120 ; the flow channel of each ball valve 131 forms a T-shaped channel.

[0040] In some embodiments, each ball valve 131 includes a hemispherical body; the hemispherical body can block the third interface 123 and connect the first interface 121 with the second interface 122, or the hemispherical body can block the second interface 122 and connect the first interface 121 with the third interface 123.

[0041] In some embodiments, the hemispherical body is a perfect hemisphere, larger than a perfect hemisphere, or smaller than a perfect hemisphere, as long as the hemispherical body can rotate in the valve housing body 120 to connect the first interface 121 and the second interface 122 and block the third interface 123, or connect the first interface 121 and the third interface 123 and block the second interface 122.

[0042] Figure 6 The structure of the first sealing valve of the valve housing assembly is shown schematically. Figures 1 to 6 As shown, in some embodiments, the valve housing assembly 100 further includes: a first sealing valve 140 , which is disposed in the third interface 123 ; in a natural state, the first sealing valve 140 blocks the third interface 123 .

[0043] When the double ball valve 130 blocks the second port 122 , and the first sealing valve 140 blocks the third port 123 , the shock absorber oil circuit system is in a closed state as a whole.

[0044] In some embodiments, the first sealing valve 140 includes a first valve component 141, a first spring 142 and a first ejector pin 143; under the action of the first spring 142, the first valve component 141 is pressed against to block the third interface 123; when the first ejector pin 143 pushes the first valve component 141 to push open the first spring 142, the third interface 123 is connected.

[0045] When the third interface 123 is connected to an external oil injection unit, the first ejector pin 143 can be pushed, so that the first valve member 141 pushes the first spring 142 away, and thus the third interface 123 is connected.

[0046] The present invention also provides an active vibration damper, referring to Figure 1 , and combined Figures 2 to 6 As shown, the active shock absorber is equipped with the above-mentioned valve housing assembly 100; the valve housing assembly 100 is connected to the shock absorber body 200 of the active shock absorber by assembly or integral processing, and the inlet and outlet of the internal oil circuit of the active shock absorber are connected to a pair of second interfaces 122 of the valve housing assembly 100.

[0047] The valve housing assembly 100 and the shock absorber body 200 can both be made of metal materials.

[0048] The embodiment of the present invention also provides a shock absorber oil circuit system, combined with Figures 1 to 6 As shown, the shock absorber oil circuit system includes: an active shock absorber; an external oil pump unit, the inlet and outlet interfaces of the oil pump unit are connected to a pair of first interfaces 121 of the valve housing assembly 100 of the active shock absorber; and a detachable external oil injection unit, the inlet and outlet interfaces of the external oil injection unit are connected to a pair of third interfaces 123 of the valve housing assembly 100.

[0049] During normal operation of the active shock absorber, the double ball valve 130 moves to connect a pair of first interfaces 121 with a pair of second interfaces 122, so that the inlet and outlet of the internal oil circuit of the active shock absorber are connected with the inlet and outlet interfaces of the external oil pump unit, thereby realizing oil exchange and realizing the active adjustment function of the oil pump unit on the active shock absorber.

[0050] The external oil filling unit can perform vacuum oil filling on the shock absorber oil circuit system. The external oil filling unit includes components such as a vacuum pump and an oil storage tank. During the vacuum oil filling process, the double ball valve 130 moves to a pair of first interfaces 121 and a pair of third interfaces 123 to communicate with each other, so that the inlet and outlet interfaces of the oil pump unit are connected with the inlet and outlet interfaces of the external oil filling unit to achieve oil exchange, thereby meeting the purpose of filling oil into the oil circuit system and replacing the system oil when necessary. When filling / changing oil, the vacuum pump can be connected to the oil circuit system first to exhaust the air in the pipeline to avoid air from being mixed into the oil, thereby reducing the possibility of bubbles generated during the operation of the active shock absorber, improving the stability of the main force regulation, and improving the working performance of the active shock absorber; then, the oil storage tank is connected to the oil circuit system to achieve oil filling / changing oil into the pipeline system.

[0051] Among them, an oil-gas separation energy storage device is usually provided inside the active shock absorber, which is pre-filled with air to form pre-pressure and filled with oil outside to achieve separation of oil and air inside the active shock absorber.

[0052] During the oil filling / oil changing process, the double ball valve 130 closes the second interface 122 to prevent the internal oil circuit of the shock absorber from leaking out.

[0053] Figure 7 The diagram shows the connection between the valve housing assembly and the external oil injection unit. Figures 1 to 7 As shown, in some embodiments, a first sealing valve 140 is provided in the third interface 123, and the first sealing valve 140 includes a first valve member 141, a first spring 142 and a first ejector pin 143. When the first ejector pin 143 pushes the first valve member 141 to push open the first spring 142, the third interface 123 is connected; the interface 300 of the external oil injection unit is provided with a second sealing valve 310, and the second sealing valve 310 includes a second valve member 311, a second spring 312 and a second ejector pin 313. When the second ejector pin 313 pushes the second valve member 311 to push open the second spring 312, the interface 300 of the external oil injection unit is connected; when the interface 300 of the external oil injection unit is connected to the third interface 123, the first ejector pin 143 and the second ejector pin 313 push against each other, so that the interface 300 of the external oil injection unit is connected to the third interface 123.

[0054] In this way, when the interface 300 (including the inlet and outlet interfaces) of the external oil injection unit is connected to the third interface 123, the first ejector pin 143 and the second ejector pin 313 push against each other to make the interface 300 of the external oil injection unit communicate with the third interface 123, and cooperate with the double ball valve 130 to move to a pair of first interfaces 121 and a pair of third interfaces 123 to communicate, so as to realize the communication between the inlet and outlet interfaces of the oil pump unit and the inlet and outlet interfaces of the external oil injection unit, thereby meeting the purpose of vacuum oil filling / oil changing in the oil circuit system and improving the working performance of the active shock absorber.

[0055] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A valve housing assembly, applied to an active shock absorber, characterized in that: include: A valve housing body, wherein the inner cavity of the valve housing body is provided with a pair of first interfaces for connecting to the shock absorber oil pump unit, a pair of second interfaces for connecting to the internal oil circuit of the shock absorber, and a pair of third interfaces for connecting to the external oil injection unit; A double ball valve is arranged in the inner cavity of the valve housing body, and the double ball valve includes a pair of connected ball valves and a switch connected to the pair of ball valves, and the switch can drive the pair of ball valves to rotate until the pair of first interfaces are connected to the pair of second interfaces, or to rotate until the pair of first interfaces are connected to the pair of third interfaces.

2. The valve housing assembly according to claim 1, characterized in that: Each of the ball valves includes a spherical body and a flow channel opened in the spherical body, and the flow channel has three openings respectively used to cooperate with the first interface, the second interface and the third interface.

3. The valve housing assembly according to claim 2, characterized in that: The second interface is located in the middle of the valve housing body, and the first interface and the third interface are distributed on both sides of the valve housing body; The flow channel of each ball valve forms a T-shaped channel.

4. The valve housing assembly according to claim 1, characterized in that: Each of the ball valves comprises a hemispherical body; The hemispherical body can block the third interface and connect the first interface with the second interface, or the hemispherical body can block the second interface and connect the first interface with the third interface.

5. The valve housing assembly according to claim 4, characterized in that: The hemispherical body is a perfect hemisphere, larger than a perfect hemisphere, or smaller than a perfect hemisphere.

6. The valve housing assembly according to claim 1, characterized in that: Also includes: A first sealing valve, arranged in the third interface; In a natural state, the first sealing valve blocks the third interface.

7. The valve housing assembly according to claim 6, characterized in that: The first sealing valve comprises a first valve member, a first spring and a first ejector pin; Under the action of the first spring, the first valve member abuts to block the third interface; When the first ejector pin pushes the first valve member to push open the first spring, the third interface is connected.

8. An active vibration absorber, characterized in that: A valve housing assembly as claimed in any one of claims 1 to 7 is provided; The valve housing assembly is connected to the shock absorber body of the active shock absorber by assembly or integral processing, and the inlet and outlet of the internal oil circuit of the active shock absorber are connected to a pair of second interfaces of the valve housing assembly.

9. A shock absorber oil circuit system, characterized in that: include: The active vibration absorber as claimed in claim 8; An external oil pump unit, wherein the inlet and outlet interfaces of the oil pump unit are connected to a pair of first interfaces of the valve housing assembly of the active shock absorber; A detachable external oil injection unit, the inlet and outlet interfaces of the external oil injection unit are connected to a pair of third interfaces of the valve housing assembly.

10. The shock absorber oil circuit system according to claim 9, characterized in that: The third interface is provided with a first sealing valve, the first sealing valve comprising a first valve member, a first spring and a first ejector pin, when the first ejector pin pushes the first valve member to push the first spring away, the third interface is connected; The interface of the external oil injection unit is provided with a second sealing valve, the second sealing valve comprises a second valve member, a second spring and a second ejector pin, when the second ejector pin pushes the second valve member to push open the second spring, the interface of the external oil injection unit is connected; When the interface of the external oil injection unit is connected to the third interface, the first ejector pin and the second ejector pin push against each other, so that the interface of the external oil injection unit is connected to the third interface.

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