Double-electromagnetic-valve shock absorber with brand-new structure

Abstract

The invention belongs to the technical field of double-electromagnetic-valve shock absorbers, and discloses a brand-new-structure double-electromagnetic-valve shock absorber which comprises a piston rod and an oil storage cylinder assembly, a first end cover is installed on the end face of the front side of the oil storage cylinder assembly, an oil seal is fixedly installed on the inner wall of the front side of the oil storage cylinder assembly, and a guide seat is connected to the surface of the rear side of the oil seal in an attached mode. Oil flows upwards through a first straight hole and a throttling gap, at the moment, the flowing direction of the oil is consistent with the elastic force direction of a wave spring, the resultant force of the two forces enables a valve plate to be tightly attached to a first pilot valve seat, the valve plate is tightly attached to a second pilot valve seat, and the valve plate is tightly attached to the first pilot valve seat. When the oil flows from top to bottom, the flowing direction of the oil is opposite to the elastic force direction of the spring, and the oil can only overcome the elastic force of the wave spring through the inclined hole to push the valve plate open and flow downwards.

Description

Technical Field

[0001] The invention belongs to the technical field of double solenoid valve shock absorbers, in particular to a double solenoid valve shock absorber with a completely new structure. Background Art

[0002] Dual solenoid valve shock absorbers are widely used in the fields of vehicles, mechanical equipment, etc. The core of the shock absorber is to control the flow of oil through the solenoid valve, so as to achieve precise adjustment of the shock absorption performance. With the continuous advancement of industrial technology, the performance requirements of shock absorbers are also increasing, especially in terms of response speed, adjustment accuracy and service life.

[0003] 1. Traditional shock absorber technology: Traditional shock absorbers are hydraulic damping structures without solenoid valves, and cannot achieve electronically controlled damping force adjustment. When installed on a vehicle, the comfort is far inferior to that of electronically controlled shock absorbers.

[0004] 2. Existing external solenoid valve vibration reduction technology: The existing external solenoid valve is a single solenoid valve, with only one external solenoid valve to control compression and recovery, and it is impossible to achieve independent control of the compression stroke and the recovery stroke. During operation, the same current is passed through the compression and recovery, and the damping force under the same current is relatively fixed. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a double-solenoid valve shock absorber with a completely new structure, which has the advantage of generating different damping forces in reciprocating compression.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a double-solenoid valve shock absorber with a completely new structure, comprising a piston rod, an oil storage cylinder assembly, a first end cover installed on the front end face of the oil storage cylinder assembly, an oil seal fixedly installed on the inner wall of the front side of the oil storage cylinder assembly, a guide seat fitted on the rear surface of the oil seal, a compression valve assembly installed on the inner wall of the rear side of the oil storage cylinder assembly, a working cylinder installed on the rear end surface of the guide seat, a separation cylinder-recovery provided on the outer wall of the working cylinder, the piston rod is slidably connected to the inner wall of the separation cylinder-recovery, a separation cylinder-compression is provided between the separation cylinder-recovery and the oil storage cylinder assembly, and two sets of connectors for connecting the solenoid valve-recovery assembly and the solenoid valve-compression assembly are fixedly provided on the outer wall of the oil storage cylinder assembly.

[0007] Preferably, the solenoid valve-recovery assembly includes a first pilot valve seat, a base, a wave spring, a valve plate, an O-ring, a first sealing valve plate, a first straight hole and an inclined hole. The outside of the first pilot valve seat is covered with a base, and the base is used to connect the first pilot valve seat and the joint. The inner wall of the first pilot valve seat is provided with an inclined hole, and the inner side of the inclined hole is provided with a first straight hole.

[0008] Preferably, a valve plate is provided on the lower end surface of the first pilot valve seat, a wave spring is provided on the lower end surface of the valve plate, and a first sealing valve plate is provided on the upper end surface of the first pilot valve seat.

[0009] Preferably, a solenoid valve is installed on the upper end of the first pilot valve seat, a wave spring is fixed between the valve plate and the base, and an O-ring is arranged around the outer wall of the first pilot valve seat.

[0010] Preferably, the solenoid valve-compression assembly includes a second pilot valve seat, a second sealing valve plate and a second straight hole, the second pilot valve seat is installed on the joint, the upper end surface of the second pilot valve seat is sealed with the second sealing valve plate, and the inner wall of the second pilot valve seat is provided with a second straight hole.

[0011] Preferably, a solenoid valve is installed at the upper end of the second pilot valve seat, and the second sealing valve plate is installed between the second pilot valve seat and the solenoid valve.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention has a base and a wave spring in the circumferential direction on the first pilot valve seat. Here, four parts constitute a one-way valve structure. When the oil flows from bottom to top, it can only pass through the first straight hole to cause the first sealing valve plate to warp and deform to form a throttling gap in the circumferential direction. The oil flows upward through the first straight hole and the throttling gap. At this time, the flow direction of the oil is consistent with the direction of the elastic force of the wave spring. The combined force of the two forces presses the valve plate tightly against the first pilot valve seat and seals the entrance of the inclined hole, so that the oil cannot flow upward through the side hole. When the oil flows from top to bottom, the flow direction of the oil is opposite to the direction of the spring elastic force. The oil can only overcome the elastic force of the wave spring through the inclined hole to push the valve plate open and flow downward. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the solenoid valve-recovery assembly of the present invention; Figure 3 It is a schematic diagram of the structure of the solenoid valve-compression assembly of the present invention; Figure 4 It is a front view structural schematic diagram of the oil storage cylinder assembly of the present invention.

[0014] In the figure: 1. piston rod; 2. first end cover; 3. oil seal; 4. guide seat; 5. oil storage cylinder assembly; 6. working cylinder; 7. separation cylinder - recovery; 8. solenoid valve - recovery assembly; 9. solenoid valve - compression assembly; 10. second end cover; 11. joint; 12. separation cylinder - compression; 13. compression valve assembly; 801. first pilot valve seat; 802. base; 803. wave spring; 804. valve plate; 805. O-ring; 806. first sealing valve plate; 807. first straight hole; 808. inclined hole; 901. second pilot valve seat; 902. second sealing valve plate; 903. second straight hole. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] like Figure 1 As shown, the present invention provides a double solenoid valve shock absorber with a completely new structure, including a piston rod 1, an oil storage cylinder assembly 5, a first end cover 2 installed on the end face of the front side of the oil storage cylinder assembly 5, an oil seal 3 fixedly installed on the inner wall of the front side of the oil storage cylinder assembly 5, a guide seat 4 is fitted and connected to the rear surface of the oil seal 3, a compression valve assembly 13 is installed on the inner wall of the rear side of the oil storage cylinder assembly 5, a working cylinder 6 is installed on the rear end surface of the guide seat 4, a separation cylinder-recovery 7 is provided on the outer wall of the working cylinder 6, the piston rod 1 is slidably connected to the inner wall of the separation cylinder-recovery 7, a separation cylinder-compression 12 is provided between the separation cylinder-recovery 7 and the oil storage cylinder assembly 5, and two groups of connectors 11 for connecting the solenoid valve-recovery assembly 8 and the solenoid valve-compression assembly 9 are fixedly provided on the outer wall of the oil storage cylinder assembly 5.

[0017] The above scheme is adopted: the first end cover 2 is connected to the oil storage cylinder assembly 5, and the axial force is applied to compress the oil seal 3, the guide seat 4, the working cylinder 6, and the compression valve assembly 13. The piston rod 1 is placed inside the working cylinder 6 and can slide up and down on the inner wall of the working cylinder 6, and the working cylinder 6 is divided into an upper green part and a lower yellow part. The inside of the working cylinder 6 is filled with oil, and small holes are punched at the top and bottom. During operation, the oil can flow into the solenoid valve through the small holes. The second end cover 10 is connected to the solenoid valve sleeve through a thread, and the solenoid valve-recovery component 8, the solenoid valve-compression component 9 and the joint 11 are pressed and fixed axially.

[0018] like Figure 1 and Figure 2As shown, the present invention provides a double solenoid valve shock absorber with a completely new structure, wherein a first end cover 2 is installed on the front end face of the oil storage cylinder assembly 5, an oil seal 3 is fixedly installed on the inner wall of the front side of the oil storage cylinder assembly 5, a guide seat 4 is fitted and connected to the rear surface of the oil seal 3, a compression valve assembly 13 is installed on the inner wall of the rear side of the oil storage cylinder assembly 5, the outside of the first pilot valve seat 801 is covered with a base 802, the base 802 is used to connect the first pilot valve seat 801 and the joint 11, an inclined hole 808 is opened on the inner wall of the first pilot valve seat 801, and a first straight hole 807 is opened on the inner side of the inclined hole 808.

[0019] The above scheme is adopted: during recovery, the piston rod 1 moves upward, a part of the piston rod is pulled out of the shock absorber, the pressure of the green part of the upper chamber increases, and the pressure of the yellow part of the lower chamber decreases. The oil flows into the separation cylinder-recovery 7 through the small hole above the working cylinder 6, and then flows into the joint 11 through the small hole of the separation cylinder-recovery 7, and flows to the solenoid valve-recovery component 8. The oil needs to flow through the first straight hole 807 of the first pilot valve seat 801, so that the sealing valve plate is deformed, and then flows back to the lower chamber through the gray part between the oil storage cylinder assembly 5 and the working cylinder 6 through the throttling gap of the compression valve assembly 13 for oil replenishment. During this process, the solenoid valve-recovery component 8 is connected with current to control the ejection force of the iron core. The greater the current, the greater the ejection force of the iron core, the greater the pressure in the chamber sealed by the sealing valve plate, the greater the force required for the sealing valve plate to warp and deform in a circular manner, and the damping force of the shock absorber as a whole increases accordingly. Through this logical process, the magnitude of the restoration damping force is actively controlled by the current.

[0020] like Figure 2 and Figure 3 As shown, the present invention provides a double solenoid valve shock absorber with a completely new structure, wherein the solenoid valve-compression assembly 9 comprises a second pilot valve seat 901, a second sealing valve disc 902 and a second straight hole 903, the second pilot valve seat 901 is mounted on the connector 11, the upper end surface of the second pilot valve seat 901 is sealingly connected with the second sealing valve disc 902, the inner wall of the second pilot valve seat 901 is provided with a second straight hole 903, the upper end of the second pilot valve seat 901 is mounted with a solenoid valve, and the second sealing valve disc 902 is mounted between the second pilot valve seat 901 and the solenoid valve.

[0021] Adopting the above scheme: during compression, the piston rod 1 moves downward and presses into the shock absorber, the pressure of the yellow part of the lower cavity increases, and the oil will flow through the small hole below the working cylinder 6, through the separation cylinder-compression 12 and the joint to the solenoid valve-compression component 9. The oil needs to flow through the second straight hole 903 of the second pilot valve seat 901 to deform the second sealing valve plate 902, and then flow through the gray part between the oil storage cylinder assembly 5 and the working cylinder 6 to the solenoid valve-recovery component 8. At this time, oil is only replenished through the solenoid valve-recovery component 8, which has no actual effect on the damping force of the shock absorber. The oil pushes open the valve plate 804 through its first straight hole 807, flows into the separation cylinder - recovery 7, and then flows into the upper chamber of the working cylinder through the small hole above the working cylinder 6 to replenish the oil. During this process, the solenoid valve - compression component 9 is connected to the current to control the ejection force of the iron core. The greater the current, the greater the ejection force of the iron core, the greater the pressure in the chamber sealed by the second sealing valve plate 902, and the greater the force required for the sealing valve plate to warp and undergo circular deformation, and the overall damping force of the shock absorber increases accordingly. Through this logical process, the current actively controls the size of the compression damping force.

[0022] like Figure 3 As shown, the present invention provides a double solenoid valve shock absorber with a new structure. The solenoid valve-recovery component 8 includes a first pilot valve seat 801, a base 802, a wave spring 803, a valve plate 804, an O-ring 805, a first sealing valve plate 806, a first straight hole 807 and an inclined hole 808. The outside of the first pilot valve seat 801 is covered with the base 802, and the base 802 is used to connect the first pilot valve seat 801 and the connector 11. The inner wall of the first pilot valve seat 801 is provided with an inclined hole. 808, a first straight hole 807 is opened on the inner side of the inclined hole 808, a valve plate 804 is provided on the lower end surface of the first pilot valve seat 801, a wave spring 803 is provided on the lower end surface of the valve plate 804, a first sealing valve plate 806 is provided on the upper end surface of the first pilot valve seat 801, a solenoid valve is installed on the upper end of the first pilot valve seat 801, the wave spring 803 is fixed between the valve plate 804 and the base 802, and an O-ring 805 is provided around the outer wall of the first pilot valve seat 801.

[0023] The above scheme is adopted: there are a base 802 and a wave spring 803 in the circumferential direction on the first pilot valve seat 801, and the four parts here constitute a one-way valve structure. When the oil flows from bottom to top, it can only pass through the first straight hole 807 to cause the first sealing valve plate 806 to warp and deform to form a throttling gap in the circumferential direction. The oil flows upward through the first straight hole 807 and the throttling gap. At this time, the oil flow direction is consistent with the elastic force direction of the wave spring 803. The combined force of the two forces presses the valve plate 804 against the first pilot valve seat 801 and seals the entrance of the inclined hole 808, so that the oil cannot flow upward through the side hole. When the oil flows from top to bottom, the oil flow direction is opposite to the spring elastic force direction. The oil can only overcome the elastic force of the wave spring 803 through the inclined hole 808 to push open the valve plate 804 and flow downward.

[0024] The working principle and use process of the present invention are as follows: during restoration, the piston rod 1 moves upward, a part of the piston rod is pulled out of the shock absorber, the pressure of the green part of the upper chamber increases, and the pressure of the yellow part of the lower chamber decreases. The oil flows into the separation cylinder-restoration 7 through the small hole above the working cylinder 6, and then flows into the joint 11 through the small hole of the separation cylinder-restoration 7, and flows to the solenoid valve-restoration component 8. The oil needs to flow through the first straight hole 807 of the first pilot valve seat 801, so that the sealing valve plate is deformed, and then flows back to the lower chamber through the gray part between the oil storage cylinder assembly 5 and the working cylinder 6 through the throttling gap of the compression valve assembly 13 for oil replenishment. During this process, the solenoid valve-restoration component 8 is passed with current to control the ejection force of the iron core. The greater the current, the greater the ejection force of the iron core, the greater the pressure in the chamber sealed by the sealing valve plate, the greater the force required for the sealing valve plate to warp and deform in a circular manner, and the damping force of the shock absorber as a whole increases accordingly. Through this logical process, the magnitude of the restoration damping force is actively controlled by the current; During compression, the piston rod 1 moves downward and presses into the shock absorber. The pressure of the yellow part of the lower cavity increases, and the oil will flow through the small hole below the working cylinder 6, through the separation cylinder-compression 12 and the joint to the solenoid valve-compression assembly 9. The oil needs to flow through the second straight hole 903 of the second pilot valve seat 901 to deform the second sealing valve plate 902, and then flow through the gray part between the oil storage cylinder assembly 5 and the working cylinder 6 to the solenoid valve-recovery assembly 8. At this time, oil is only replenished through the solenoid valve-recovery assembly 8, which has no actual effect on the damping force of the shock absorber. The oil The first straight hole 807 pushes open the valve plate 804, flows into the separation oil cylinder - recovery 7, and then flows into the upper chamber of the working cylinder through the small hole above the working cylinder 6 to replenish oil. During this process, the solenoid valve - compression assembly 9 is fed with current to control the ejection force of the iron core. The greater the current, the greater the ejection force of the iron core, the greater the pressure in the chamber sealed by the second sealing valve plate 902, the greater the force required for the sealing valve plate to warp and produce circular deformation, and the damping force of the shock absorber as a whole increases accordingly. Through this logical process, the current actively controls the size of the compression damping force; Further: there are a base 802 and a wave spring 803 in the circumferential direction on the first pilot valve seat 801, and the four parts here constitute a one-way valve structure. When the oil flows from bottom to top, it can only pass through the first straight hole 807 to cause the first sealing valve plate 806 to warp and deform to form a throttling gap in the circumferential direction. The oil flows upward through the first straight hole 807 and the throttling gap. At this time, the oil flow direction is consistent with the elastic force direction of the wave spring 803. The combined force of the two forces presses the valve plate 804 tightly against the first pilot valve seat 801 and seals the entrance of the inclined hole 808, so that the oil cannot flow upward through the side hole. When the oil flows from top to bottom, the oil flow direction is opposite to the spring elastic force direction. The oil can only overcome the elastic force of the wave spring 803 through the inclined hole 808 to push open the valve plate 804 and flow downward.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-solenoid valve shock absorber with a new structure, comprising a piston rod (1) and an oil storage cylinder assembly (5), characterized in that: a first end cover (2) is installed on the front end surface of the oil storage cylinder assembly (5), an oil seal (3) is fixedly installed on the inner wall of the front side of the oil storage cylinder assembly (5), a guide seat (4) is fitted and connected to the rear surface of the oil seal (3), a compression valve assembly (13) is installed on the inner wall of the rear side of the oil storage cylinder assembly (5), a working cylinder (6) is installed on the rear end surface of the guide seat (4), a separation cylinder-recovery (7) is arranged on the outer wall of the working cylinder (6), the piston rod (1) is slidably connected to the inner wall of the separation cylinder-recovery (7), a separation cylinder-compression (12) is provided between the separation cylinder-recovery (7) and the oil storage cylinder assembly (5), and two sets of joints (11) for connecting the electromagnetic valve-recovery assembly (8) and the electromagnetic valve-compression assembly (9) are fixedly provided on the outer wall of the oil storage cylinder assembly (5).

2. The new structure dual solenoid valve shock absorber according to claim 1 is characterized in that: The solenoid valve-recovery assembly (8) comprises a first pilot valve seat (801), a base (802), a wave spring (803), a valve plate (804), an O-ring (805), a first sealing valve plate (806), a first straight hole (807) and an inclined hole (808); the first pilot valve seat (801) is covered with a base (802) on the outside; the base (802) is used to connect the first pilot valve seat (801) and a joint (11); the inner wall of the first pilot valve seat (801) is provided with an inclined hole (808); the inner side of the inclined hole (808) is provided with a first straight hole (807).

3. The new structure dual solenoid valve shock absorber according to claim 2 is characterized in that: The lower end surface of the first pilot valve seat (801) is provided with a valve plate (804), the lower end surface of the valve plate (804) is provided with a wave spring (803), and the upper end surface of the first pilot valve seat (801) is provided with a first sealing valve plate (806).

4. The new structure dual solenoid valve shock absorber according to claim 2 is characterized in that: A solenoid valve is installed at the upper end of the first pilot valve seat (801), a wave spring (803) is fixed between the valve plate (804) and the base (802), and an O-ring (805) is arranged around the outer wall of the first pilot valve seat (801).

5. The new structure dual solenoid valve shock absorber according to claim 1 is characterized in that: The solenoid valve-compression assembly (9) comprises a second pilot valve seat (901), a second sealing valve plate (902) and a second straight hole (903); the second pilot valve seat (901) is mounted on the joint (11); the upper end surface of the second pilot valve seat (901) is sealingly connected to the second sealing valve plate (902); and the inner wall of the second pilot valve seat (901) is provided with a second straight hole (903).

6. The new structure dual solenoid valve shock absorber according to claim 5 is characterized in that: A solenoid valve is installed at the upper end of the second pilot valve seat (901), and the second sealing valve plate (902) is installed between the second pilot valve seat (901) and the solenoid valve.

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