Oil seepage prevention power steering gear guide block

Abstract

An anti-oil-leakage power steering gear guide block comprises a guide block body, and an annular groove is formed in the outer wall of the right portion of the guide block body. An O-shaped ring matched with the annular groove is arranged in the annular groove; a pressure device is arranged on the right side of the guide block main body; an annular sealing ring is arranged between the pressure device and the guide block main body and is made of a rubber material; the pressure device can extrude the sealing ring towards the direction of the guide block main body, so that the sealing ring is pressed and expands outwards; an annular drainage groove is formed in the peripheral face of the sealing ring. According to the oil-seepage-proof power steering gear guide block, the sealing effect of the oil-seepage-proof power steering gear guide block can be effectively guaranteed, the situation of oil leakage is avoided, and the oil-seepage-proof effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of anti-seepage power steering gear guide block. BACKGROUND

[0002] Guide block is the main part of automobile power steering gear, guide block, compression spring and adjusting screw plug keep the stability of steering rack axial movement by holding steering rack and pinion.

[0003] The main problem of the guide block at present is that, after the power steering gear is installed on the vehicle, due to the insufficient sealing at the guide block, the oil remaining in the power steering gear housing during the production test process of the power steering gear can seep out from the guide block. SUMMARY

[0004] The utility model solves the prior art problem to provide a kind of anti-seepage power steering gear guide block, it can effectively guarantee the sealing effect of itself, avoid the situation of oil leakage, play the effect of anti-seepage.

[0005] The utility model solves the above technical problem by the technical scheme that:

[0006] The utility model discloses an anti-seepage power steering gear guide block, including guide block main part, the outer wall of guide block main part right part is equipped with a annular groove;The annular groove is equipped with the O type ring matched therewith;The right side of guide block main part is equipped with a pressure device;Between the pressure device and guide block main part, it is equipped with a ring-shaped sealing ring, and sealing ring is rubber material quality;The pressure device can extrude sealing ring to the direction of guide block main body, so that sealing ring is pressed and expands outward;The outer circumferential surface of sealing ring is equipped with a ring-shaped drainage groove.

[0007] The pressure device includes the seat plate that is attached to the middle part of the right end surface of guide block main body;The right side of guide block main body has a pressure block;The left side wall of the pressure block is equipped with a ring-shaped guide groove;The outer edge of the seat plate extends to the right with a guide portion matched with the guide groove;Between the right end surface of the guide portion and the groove bottom of the guide groove, there is a pressure spacing;The center of the right side wall of the pressure block is equipped with a compression spring clamping groove.

[0008] The left end outer wall of the pressure block is equipped with an extension part attached to the right side wall of sealing ring;The outer diameter of the extension part is equal to or less than the outer diameter of guide block main body.

[0009] The center of the right end surface of the guide block body is provided with an embedding groove; the center of the left side wall of the seat plate is provided with an embedding block matched with the embedding groove; the center of the bottom of the embedding groove is provided with a screw hole; the center of the right side wall of the seat plate is provided with a left through hole penetrating the screw hole; the center of the bottom of the press spring clamping groove is provided with a right through hole penetrating the left through hole; a screw is sequentially threaded into the right through hole and screwed into the screw hole from left to right, and the left side wall of the head of the screw is matched with the bottom of the press spring clamping groove; the left side wall of the pressure block and the right side wall of the seat plate have a moving interval; and the left end surface of the screw and the bottom of the screw hole have a fastening interval.

[0010] The middle part of the bottom of the press spring clamping groove is provided with a clamping portion in the shape of a ring, which encloses the head of the screw.

[0011] The left side groove wall of the drainage groove is provided with a first drainage taper surface; the drainage groove is provided with an annular gasket matched therewith, and the annular gasket is made of rubber; the left side wall of the annular gasket is provided with a second drainage taper surface opposite to the first drainage taper surface; the diameters of the first drainage taper surface and the second drainage taper surface decrease from left to right; the first drainage taper surface and the second drainage taper surface have a drainage gap therebetween; and the left side wall of the annular gasket is provided with an annular oil storage groove penetrating the drainage gap.

[0012] The present application has the following beneficial effects:

[0013] Compared with the prior art, the O-shaped ring of the anti-oil-seepage power steering gear guide block with the structure can form the first sealing, effectively ensures the sealing between the outer wall of the guide block and the inner wall of the mounting hole, even if the O-shaped ring is weakened due to aging or other reasons, the sealing ring can still ensure the sealing between the outer wall of the guide block and the inner wall of the mounting hole, and the existence of the two seals can maximize the prevention of the oil in the power steering gear shell from seeping out through the position of the guide block, thereby achieving the effect of preventing oil seepage. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a sectional view of the anti-oil-seepage power steering gear guide block of the present application;

[0015] Figure 2 is an enlarged view of A of Figure 1 ;

[0016] Figure 3 is a structural schematic view of the anti-oil-seepage power steering gear guide block of the present application;

[0017] Figure 4 is a sectional view of the anti-oil-seepage power steering gear guide block of the present application when the guide block is installed in the power steering gear. DETAILED DESCRIPTION

[0018] The application will be described in further detail below with reference to the drawings and specific embodiments.

[0019] Please refer to Figures 1 to 4 The utility model provides an anti -infiltration oil power steering gear guide block, including guide block main part 1, the right part outer wall of guide block main part 1 is equipped with a annular groove 2, the annular groove 2 is equipped with the O type ring 3 matched with it, the right side of guide block main part 1 is equipped with a pressure device, be equipped with the sealing ring 4 of annular between pressure device and guide block main part 1, and sealing ring 4 is rubber material, the pressure device can extrude sealing ring 4 to the direction of guide block main part 1, make sealing ring 4 be pressed and expand outward, the outer circumferential surface of sealing ring 4 is equipped with a annular drainage groove 5.

[0020] The pressure device includes a seat plate 6 that fits the middle of the right end face of the guide block main body 1. The right side of the guide block main body 1 has a pressure block 7. The left side wall of the pressure block 7 is provided with a annular guide groove 8. The outer edge of the seat plate 6 extends to the right to form a guide part 9 that matches the guide groove 8. There is a pressure spacing 10 between the right end face of the guide part 9 and the groove bottom of the guide groove 8. The right side wall center of the pressure block 7 is provided with a compression spring clamping groove 11.

[0021] The left end outer wall of the pressure block 7 is provided with an extension part 12 that fits the right side wall of the sealing ring 4. The outer diameter of the extension part 12 is equal to or less than the outer diameter of the guide block main body 1.

[0022] The right end face center of the guide block main body 1 is provided with an embedding groove 13. The left side wall center of the seat plate 6 is provided with an embedding block 14 that matches the embedding groove 13. The center of the groove bottom of the embedding groove 13 is provided with a screw hole 15. The center of the right side wall of the seat plate 6 is provided with a left perforation 16 that penetrates the screw hole 15. The center of the groove bottom of the compression spring clamping groove 11 is provided with a right perforation 17 that penetrates the left perforation 16. A screw 18 passes through the right perforation 17 from left to right and is screwed into the screw hole 15. The left side wall of the head of the screw 18 fits the groove bottom of the compression spring clamping groove 11. There is a moving spacing 19 between the left side wall of the pressure block 7 and the right side wall of the seat plate 6. There is a fastening spacing 20 between the left end face of the screw 18 and the hole bottom of the screw hole 15.

[0023] The center of the groove bottom of the compression spring clamping groove 11 is provided with a annular clamping part 21. The clamping part 21 encloses the head of the screw 18.

[0024] The left side wall of the drainage groove 5 is provided with a first drainage taper surface 22; the drainage groove 5 is provided with a ring-shaped gasket 23 matched with the drainage groove 5, the ring-shaped gasket 23 is made of rubber; the left side wall of the ring-shaped gasket 23 is provided with a second drainage taper surface 24 opposite to the first drainage taper surface 22; the diameters of the first drainage taper surface 22 and the second drainage taper surface 24 both decrease from left to right; the first drainage taper surface 22 and the second drainage taper surface 24 have a drainage gap 25 therebetween; the left side wall of the ring-shaped gasket 23 is provided with a ring-shaped oil storage groove 26 in communication with the drainage gap 25.

[0025] The use method of the utility model is as follows:

[0026] When the power steering device is used, only the steering wheel of the automobile is rotated, the transmission shaft 27 drives the gear 28 to rotate synchronously, the gear 28 is engaged with the rack 29, when the gear 28 rotates, the rack 29 moves under the action of the guide block, thereby realizing the steering of the tire, the guide block is arranged in the mounting hole 32 of the power steering device shell 31, the adjusting screw plug 33 is screwed in the hole mouth of the mounting hole 32, the adjusting screw plug 33 presses the guide block on the back of the rack 29 through the compression spring 34, only the adjusting screw plug 33 is rotated, the compression state of the compression spring 34 can be changed, thereby the pressure of the compression spring 34 on the guide block can be changed.

[0027] When the oil in the power steering device shell 31 attempts to seep outwards through the gap between the outer wall of the guide block main body 1 and the inner wall of the mounting hole 32, the oil must pass through the position of the O-shaped ring 3 and the sealing ring 4, at this time, the O-shaped ring 3 can form the first sealing, effectively ensuring the sealing between the outer wall of the guide block main body 1 and the inner wall of the mounting hole 32, even if the O-shaped ring 3 is weakened due to aging or other reasons, the sealing ring 4 can still ensure the sealing between the outer wall of the guide block main body 1 and the inner wall of the mounting hole 32, the existence of the two seals can maximize the avoidance of the situation that the oil in the power steering device shell 31 seeps outwards through the position of the guide block, thereby achieving the effect of preventing oil seepage.

[0028] The outer circumferential surface of the sealing ring 4 is provided with a ring-shaped drainage groove 5, when the oil seeps to the position of the sealing ring 4, the oil must pass through the position of the drainage groove 5, at this time, the oil directly enters into the drainage groove 5, the existence of the drainage groove 5 can achieve the effect of containing the oil, effectively delaying the time of the oil seeping outwards, and improving the sealing effect of the sealing ring 4.

[0029] After the structure of the utility model is used, the left end of the compression spring 34 is actually clamped in the compression spring clamping groove 11, at this time the elastic force of the compression spring 34 directly acts on the groove bottom of the compression spring clamping groove 11, so that the pressure block 7 is extruded to the left, in this case, the outer edge of the left side wall of the pressure block 7 extrudes the sealing ring 4 to the left, since the sealing ring 4 is sleeved on the outside of the guide part 9, the sealing ring 4 is located between the right end face of the guide block main body 1 and the left side wall of the pressure block 7, when the sealing ring 4 is deformed under pressure, it will expand outward, so that it is further filled in the gap between the outer wall of the guide block main body 1 and the inner wall of the mounting hole 32, further improving the sealing effect of the sealing ring 4, even if the elasticity of the sealing ring 4 is weakened, the outer peripheral surface of the sealing ring can still be tightly attached to the inner wall of the mounting hole 32 by the elastic force of the compression spring 34, ensuring the sealing effect of the sealing ring 4, and the existence of the pressure spacing 10 and the movement spacing 19 ensures that the pressure block 7 can smoothly extrude the sealing ring 4 to the left.

[0030] The left end outer wall of the pressure block 7 is provided with an extension 12 which is fitted with the right side wall of the sealing ring 4, the outer diameter of the extension 12 is equal to or less than the outer diameter of the guide block main body 1, the existence of the extension 12 can increase the pressure area of the sealing ring 4 when the pressure block 7 extrudes the sealing ring 4 to the left, further ensuring the expansion effect of the sealing ring 4, thereby ensuring the sealing effect of the sealing ring 4.

[0031] At the same time, the sealing ring 4 can also be extruded by another method, when the sealing ring 4 needs to be extruded, only need to rotate the screw 18, make the screw 18 left shift, can utilize the head of the screw 18 to push the pressure block 7 to the left, make the pressure block 7 extrude the sealing ring 4, utilize the pressure expansion of the sealing ring 4 to improve the sealing effect of the sealing ring 4, the existence of the fastening spacing 20 ensures that the screw 18 can be shifted to the left smoothly.

[0032] The middle part of the groove bottom of the compression spring clamping groove 11 is provided with a clamping portion 21 in the shape of a ring, the clamping portion 21 encloses the head of the screw 18, the clamping portion 21 can be directly clamped in the left end of the compression spring 34, further ensuring the stability of the left end of the compression spring 34, thereby ensuring the stability of the compression spring 34 when being compressed and expanded.

[0033] The left side groove wall of the drainage groove 5 is provided with a first drainage taper surface 22, the drainage groove 5 is provided with a ring-shaped gasket 23 matched therewith, the ring-shaped gasket 23 is made of rubber material, the left side wall of the ring-shaped gasket 23 is provided with a second drainage taper surface 24 opposite to the first drainage taper surface 22, the diameters of the first drainage taper surface 22 and the second drainage taper surface 24 both decrease from left to right, the first drainage taper surface 22 and the second drainage taper surface 24 have a drainage gap 25 therebetween,

[0034] When the annular gasket is arranged in the drainage groove 5, as the oil leaks to the position where the drainage groove 5 is located, the oil enters the oil storage groove 26 through the drainage gap 25. As the oil continuously enters the oil storage groove 26, the oil pressure in the oil storage groove 26 rises, the oil presses the inner wall of the oil storage groove 26, the annular gasket 23 expands, the outer circumferential surface of the annular gasket 23 further adheres to the inner wall of the mounting hole 32, the inner circumferential surface of the annular gasket 23 further adheres to the inner wall of the drainage groove 5, and the sealing effect of the sealing ring 4 is improved.

Claims

1. An oil-impervious power-steering-gei's block comprising a block body, characterized in that: The outer wall of the right part of the guide block body is provided with an annular groove; an O-shaped ring matched with the annular groove is arranged in the annular groove; a pressure device is arranged on the right side of the guide block body; an annular sealing ring is arranged between the pressure device and the guide block body, and the sealing ring is made of rubber; the pressure device can extrude the sealing ring towards the guide block body, so that the sealing ring is pressed and expands outward; an annular drainage groove is arranged on the outer circumferential surface of the sealing ring.

2. A low permeation oil power steering gear ram block as claimed in claim 1 wherein: The pressure device comprises a seat plate matched with the middle part of the right end surface of the guide block body; the right side of the guide block body is provided with a pressure block; an annular guide groove is arranged on the left side wall of the pressure block; the outer edge of the seat plate extends rightwards to form a guide part matched with the guide groove; a pressing space is arranged between the right end surface of the guide part and the groove bottom of the guide groove. A compression spring clamping groove is arranged in the center of the right side wall of the pressure block.

3. A low permeation power steering gear ram block as defined in claim 2 wherein: An extension part matched with the right side wall of the sealing ring is arranged on the left end outer wall of the pressure block; the outer diameter of the extension part is equal to or smaller than the outer diameter of the guide block body.

4. A low permeation power steering gear ram block as defined in claim 2 wherein: A clamping groove is arranged in the center of the right end surface of the guide block body; a clamping block matched with the clamping groove is arranged in the center of the left side wall of the seat plate; a screw hole is arranged in the center of the groove bottom of the clamping groove; a left through hole is arranged in the center of the right side wall of the seat plate and penetrates the screw hole; a right through hole is arranged in the center of the groove bottom of the compression spring clamping groove and penetrates the left through hole; a screw is sequentially inserted into the right through hole from left and is screwed into the screw hole; the left side wall of the head of the screw is matched with the groove bottom of the compression spring clamping groove; a moving space is arranged between the left side wall of the pressure block and the right side wall of the seat plate; a fastening space is arranged between the left end surface of the screw and the hole bottom of the screw hole.

5. A low permeation power steering gear ram block as claimed in claim 4, wherein: An annular clamping part is arranged in the middle part of the groove bottom of the compression spring clamping groove, and the clamping part encloses the head of the screw.

6. A low permeation power steering gear ram block as defined in claim 1 wherein: A first drainage taper surface is arranged on the left side groove wall of the drainage groove; an annular gasket matched with the drainage groove is arranged in the drainage groove, and the gasket is made of rubber; a second drainage taper surface opposite to the first drainage taper surface is arranged on the left side wall of the annular gasket; the diameters of the first drainage taper surface and the second drainage taper surface decrease from left to right; a drainage gap is arranged between the first drainage taper surface and the second drainage taper surface; an annular oil storage groove is arranged on the left side wall of the annular gasket and penetrates the drainage gap.

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