Flow control valve for power steering pump

专利摘要:
To improve noiseability of the spring assembled in the flow control valve applied to the power steering pump to reduce the noise by improving the shape of the guide bar into which the spring is inserted; It consists of a screw assembly with a filter and a first flow path, a metal ball seated in the screw assembly, a guide bar for positioning the metal ball, and a plunger screwed into the power steering pump while incorporating a spring holding the guide bar. In the flow control valve of the power steering pump The guide bar guides the flow of oil to the inner wall side of the plunger on a head having a spring inserted therein to guide the forward and backward movements, and a head having an inclined surface to induce a metal ball located at a first flow path of the screw assembly at one end of the rod. It is to provide a flow control valve of the power steering pump formed by forming a guide passage.
公开号:KR20020074652A
申请号:KR1020010014562
申请日:2001-03-21
公开日:2002-10-04
发明作者:이달훈
申请人:한국델파이주식회사；
IPC主号:

专利说明:

Flow control valve for power steering pump {FLOW CONTROL VALVE FOR POWER STEERING PUMP}
[12] The present invention relates to a flow control valve of a power steering pump, and more particularly, to improve noiseability of a spring assembled in a flow control valve applied to a power steering pump, by improving the shape of the guide bar into which the spring is inserted to reduce noise. It is related with the flow control valve of the power steering pump made to reduce.
[13] In general, power steering is a device that reduces the operating force of the steering oil by the hydraulic pressure of the oil pump driven by the engine, and puts the pressure-increased oil into the cylinder interlocking with the steering system to reduce the operating force of the handle by the movement of the piston. Device.
[14] 1 is a view showing a flow control valve applied to a power steering pump according to the prior art, Figure 2 is a view showing a flow control valve according to the prior art.
[15] The flow control valve 2 has an o-ring 6, a spring 8, a flow control valve 2 and a valve cap 10 to the power steering pump 4 to adjust the amount of oil supplied to the power cylinder, not shown. Are assembled in order.
[16] The flow control valve 2 includes a screw assembly 16 having a filter 12 at its tip and forming a first flow passage 14, and a metal formed on one side of the first flow passage 14 of the screw assembly 16. The metal sphere 20 interposed in the old sheet 18, the guide bar 22 interposed so that the metal sphere 20 may be positioned, and the first spring inserted into the guide bar 22 and carried thereon. 24 and the threaded portion to be screwed to the power steering pump 4 while forming the guide bar seat groove 26 so as to be positioned on the central axis when the guide bar 22 is retracted while supporting the first spring 24. 28 is made of the plunger 30 formed on the outer circumferential surface thereof.
[17] And the plunger 30 forms the 2nd flow path 32 so that oil may be supplied from the power steering pump 4.
[18] In addition, the guide bar 22 is composed of a head 36 formed with a groove 34 for contacting the metal sphere 20 to be positioned in position, and a rod 38 having the head 36 formed on one side thereof. have.
[19] When the overpressure is applied through the first flow passage 14, the flow control valve 2 retreats the metal sphere 20 and the double guide bar 22 also retreats while compressing the first spring 24.
[20] At the same time, when oil by the operation of the power steering pump 4 flows through the second flow path 32 of the plunger 30, the power steering pump 4 is supplied through the first flow path 14 having an orifice shape. ) To prevent overload.
[21] When the overload of the power steering pump 4 is released, the guide bar 22 moves the metal sphere 20 to the metal sphere sheet 18 formed at the inlet of the first flow passage 14 by the first spring 24. It is pushed through the head 36 to block.
[22] The flow control valve 2 returns oil by itself to prevent overload of the power steering pump 4 generated when the handle is severely rotated left and right and to adjust the discharged flow rate.
[23] The floor control valve has a problem of generating noise as it passes through an orifice such as a first flow path during operation.
[24] In addition, as the head portion of the guide bar positioned on the metal sphere sheet, which is the inlet of the first passage, is formed to have a diameter equal to the diameter of the quickener, there is a problem in that various noises are hydraulically sucked into the first passage.
[25] An object of the present invention devised to solve the problems of the prior art as described above is to improve the seating of the spring is assembled in the flow control valve applied to the power steering pump to improve the shape of the guide bar is inserted into the spring noise It is to provide a flow control valve of the power steering pump to reduce the pressure.
[1] 1 illustrates a flow control valve applied to a power steering pump according to the prior art.
[2] Figure 2 shows a flow control valve according to the prior art.
[3] Figure 3 shows a flow control valve of the power steering pump according to the present invention.
[4] Figure 4 is a view showing a guide bar applied to the present invention.
[5] * Description of the symbols for the main parts of the drawings *
[6] 50: flow control valve 52: filter
[7] 54: first euro 56: screw assembly
[8] 58: metal ball 60: guide bar
[9] 62: spring 64: plunger
[10] 66: load 68: head
[11] 70: guide passage
[26] The configuration to realize this is
[27] It consists of a screw assembly with a filter and a first flow path, a metal ball seated in the screw assembly, a guide bar for positioning the metal ball, and a plunger screwed into the power steering pump while incorporating a spring holding the guide bar. In the flow control valve of the power steering pump
[28] The guide bar guides the flow of oil to the inner wall side of the plunger on a head having a spring inserted therein to guide the forward and backward movements, and a head having an inclined surface to induce a metal ball located at a first flow path of the screw assembly at one end of the rod. It is to provide a flow control valve of the power steering pump formed by forming a guide passage.
[29] The guide passage is provided to the flow control valve of the power steering pump, characterized in that formed in the plurality of semi-circular on the edge of the head.
[30] Hereinafter, with reference to the accompanying drawings a preferred embodiment of the present invention will be described in more detail.
[31] Figure 3 is a view showing a flow control valve of the power steering pump according to the present invention, Figure 4 is a view showing a guide bar applied to the present invention.
[32] The flow control valve 50 includes a screw assembly 56 having a filter 52 and a first flow passage 54, a metal ball 58 placed in the screw assembly 56, and the metal ball 58. ) And a plunger 64 which is screwed to the power steering pump while incorporating a guide bar 60 for positioning the guide bar 60 and a spring 62 supporting the guide bar 60.
[33] The guide bar 60 is a spring 62 is inserted and the rod 66 for guiding forward and backward is formed to a predetermined length.
[34] An inclined surface is formed on the head 68 so as to guide the metal sphere 58 to the first passage 54 of the screw assembly 56 at one end of the rod 66.
[35] In addition, the head 68 forms a guide passage 70 for guiding the flow of oil toward the inner wall side of the plunger 64, forms a diameter in the plunger 64, and assembles it in an airtight manner so that the elastic force of the spring 62 is reduced. It is made by acting on the guide bar 60 in the correct posture not in the middle.
[36] A plurality of guide passages 70 are formed in a semicircular shape at the edge of the head 68.
[37] Referring to the operation of the present invention made as described above, the flow control valve 50 is the retraction of the metal sphere 58 and the double guide bar 60 also spring ( Retreat while compressing 62).
[38] At the same time, when the oil from the operation of the power steering pump flows into the plunger 64 through the second flow passage 72 of the plunger 64, the oil flows through the guide passage 70 formed in the head 68 of the guide bar 60. Through the flow through the inner wall of the plunger 64 toward the orifice-shaped first flow path 54 of the screw assembly 58.
[39] As described above, even when the oil supplied when the power steering pump is overloaded, the supply is made through the first flow passage 54 while simultaneously pushing the metal sphere 58 by the oil to flow along the inner wall of the plunger 64. Acts to prevent overloading of the power steering pump.
[40] At this time, even if the oil is suddenly supplied through the first passage 54, the oil flows along the inner wall of the plunger 64, thereby reducing the noise.
[41] Accordingly, the flow control valve 50 has a quiet function even when the handle is severely rotated left and right, in order to prevent the overload of the power steering pump and to control the discharged flow rate.
[42] Therefore, the flow control valve reduces the noise by allowing the oil supplied to the first flow path to flow along the inner wall of the plunger through a plurality of guide passages formed in the head of the guide bar.
[43] The quietness of the flow control valve is maintained, thereby increasing the reliability of the technology.
[44] And it is effective to reduce the noise of the vehicle.
[45] In addition, it is possible to effectively position the guide bar in the plunger of the flow control valve and the center line of the metal sphere.
[46] Easy setting of the spring inserted into the guide bar has the effect of preventing the uniaxial load acts.

权利要求:
Claims (3)
[1" claim-type="Currently amended] It consists of a screw assembly with a filter and a first flow path, a metal ball seated in the screw assembly, a guide bar for positioning the metal ball, and a plunger screwed into the power steering pump while incorporating a spring holding the guide bar. In the flow control valve of the power steering pump
The guide bar guides the flow of oil to the inner wall side of the plunger on a head having a spring inserted therein to guide the forward and backward movements, and a head having an inclined surface to induce a metal ball located at a first flow path of the screw assembly at one end of the rod. A flow control valve of a power steering pump formed by forming a guide passage.
[2" claim-type="Currently amended] The flow control valve of claim 1, wherein the guide bar forms a head having a plunger inner diameter size to be airtightly assembled in the plunger.
[3" claim-type="Currently amended] The flow control valve of claim 1, wherein a plurality of guide passages are formed in a semicircular shape at an edge of the head.

类似技术:

---

公开号 | 公开日 | 专利标题

---

AT514071B1|2014-10-15|Length adjustable connecting rod

---

DE3443542C2|1990-07-26|

---

KR101143559B1|2012-05-24|Apparaus of engine brake having combined oil passage

---

US7425120B2|2008-09-16|Diaphragm position control for hydraulically driven pumps

---

US5879256A|1999-03-09|Hydraulic tensioner having a piston with a pressure relief valve and grooved tip

---

DE10206630B4|2007-12-06|Method and device for high-speed pressing of workpieces

---

US7152623B2|2006-12-26|Fluid jet for providing fluid under pressure to a desired location

---

US7048521B2|2006-05-23|High pressure fuel supply pump with an intake valve member and a discharge valve member aligned along a plunger axis

---

US8202064B2|2012-06-19|Inlet throttle controlled liquid pump with cavitation damage avoidance feature

---

EP0142008B1|1988-01-07|Delivery valve for fuel injection pumps

---

JP2905430B2|1999-06-14|Fluid pressure cylinder

---

US6848429B2|2005-02-01|Fuel injection pump

---

DE69636585T2|2007-09-06|fuel Injector

---

DE102008059212B4|2016-05-25|Spanner for an endless transmission line

---

TWI273178B|2007-02-11|Linear actuator

---

US4998453A|1991-03-12|Hydraulic bolt tensioner

---

JP4292078B2|2009-07-08|Exhaust valve mechanism of internal combustion engine

---

EP1269026B1|2003-11-12|Hydraulic pressure intensifier

---

US20030127074A1|2003-07-10|Fuel injection system for internal combustion engines

---

US5201290A|1993-04-13|Compression relief engine retarder clip valve

---

EP2038567B1|2010-03-24|Check valve with spring retained ball

---

KR19990022457A|1999-03-25|Adjustable energy absorber

---

DE102010027209B4|2019-08-29|chain tensioner

---

TWI613119B|2018-02-01|Hydraulic operating device

---

US8307525B2|2012-11-13|Hand-operated rivet setting tool

同族专利:

---

公开号 | 公开日

---

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

法律状态:
2001-03-21|Application filed by 한국델파이주식회사

---

2001-03-21|Priority to KR1020010014562A

---

2002-10-04|Publication of KR20020074652A

优先权:

---

申请号 | 申请日 | 专利标题

---

KR1020010014562A|KR20020074652A|2001-03-21|2001-03-21|Flow control valve for power steering pump|