JPS6347313Y2 - - Google Patents

Description

[Detailed description of the invention] [Subject of the invention] The present invention is a type of regulator valve device in which pressure is controlled by two valves, and the line pressure setting is adjusted by adjusting a shim between a spring and a sleeve. The present invention relates to an improvement in adjusting means for a regulator valve device.

[Application field of this invention]

The above-mentioned regulator valve device can adjust and control the fluid pressure in a proportional relationship to the throttle pressure by applying the throttle pressure of the vehicle in the same direction as the spring. It can be used as a device to obtain operating pressure to operate the brake or clutch of an aircraft.

[Prior art]

In the prior art for adjusting the pressure setting of a regulator valve device, as shown in FIG. 3, an annular groove is provided at both ends of the valve body where the sleeve is fitted, and a snap ring is used to prevent the sleeve from coming off.

[Problems with conventional technology and their technical analysis]

Although this conventional technology allows pressure adjustment using shims when the valve body and its mounting members (such as other valve bodies or cases) are assembled, it is time-consuming to remove and install the snap spring, and it is difficult to remove the snap spring. The problem was that tools were required.

[Technical issues]

Therefore, the present invention was developed in the assembled state.
The technical object is to easily adjust the line pressure setting using shims without using a tool for removing the snap spring.

[Technical means]

The technical measure taken to solve the above technical problem was to drill a hole in the valve body on the side opposite to the mounting surface of the valve body that communicates with the bore, and then remove the shim between the sleeve and spring from this hole and install it. It is to do.

[Effect of technical means]

The above technical means works as follows. That is, if the line pressure is higher than the set value in the assembled state, insert your finger or a screwdriver into the hole, release the spring that is in contact with the shim, and pull out an appropriate number of shims. Also, if it is lower than the set value, an appropriate number of shims can be added in the same manner to adjust it to the desired set value.

[Special effects produced by the present invention]

The present invention produces the following unique effects. That is, in the conventional method, a snap spring mounting groove must be machined in the valve body, but it cannot be machined in the same way as other machined parts, and a process unique to the groove machining must be set up, which increases costs.

On the other hand, in the present invention, since the opening is provided in the valve body itself on the side facing the mounting surface of the valve body, the valve body can be integrally formed during molding, so that the cost does not increase.

〔Example〕

Hereinafter, embodiments of the above technical means will be explained using figures. In the explanatory text, up, down, left, and right refer to the directions in FIG.

A large-diameter bore 2 and a small-diameter bore 3 are coaxially provided in the valve body 1 from an opening on the left side, and further communicate with the large-diameter bore 2 on the mounting member (another valve body, case, etc.) 31 side of the valve body 1. A first oil passage 4 and a second oil passage 5 are provided in the small diameter bore 3, and a first oil chamber 6, a second oil chamber 7, and a third oil chamber 8 are provided. A valve 11 is provided in the small diameter bore 3.
However, a sleeve 21 is inserted into the large diameter bore 2 in a sealed manner. A large bore 23 and a small bore 22 are coaxially provided in this sleeve 21 from the right side opening, and each bore is provided with a second oil passage 32 and a first oil passage 33 that communicate with the outer surface of the sleeve 21. These oil passages communicate with the second oil passage 5 and the first oil passage 4 of the valve body 1, respectively, in the assembled state. Said sleeve 2
1, a plunger 18 having a large diameter flange 19 and a small diameter flange 20 is inserted, the small diameter flange 20 and small bore 22 form a small oil chamber 35, and the large diameter flange 19 and large bore 23 form a large oil chamber 36. Form.
Further, a protrusion 2 is provided on the left end surface 24 of the sleeve 21.
5 is provided. The valve 11 has a first flange 39, a second flange 12, and a third flange 3.
7, the first flange 39 and the third flange 37
is in contact with the small diameter bore 3, and the second flange 12 is located in the first oil chamber 6. This valve 11 has a rod 15 on the left side of the first flange 39, which abuts against the plunger 18. Further, between the left end surface 14 of the first flange 39 of the valve 11 and the opening end surface 34 of the sleeve 21, there is a gap between the opening end surface 34 and the opening end surface 34 of the sleeve 21.
A spring 16 is biased on the side via a shim locking device 40 and a shim 17. The shim 17 is locked to a cylindrical portion 41 of a shim locking tool 40. A small hole 10 is provided in the lower part near the opening on the left side of the valve body 1, and a key 26 is assembled as a retainer so as to come into contact with the small hole 10, the left end surface 24 of the sleeve 21, and the protrusion 25. Further, an opening is provided in the upper part of the valve body 1 near the shim 17 position.

The basic hydraulic operation in this embodiment is the same as in the prior art, and oil supplied from an oil pump (not shown) to the first oil chamber 6 partially enters the third oil chamber 8 through an orifice (not shown). The oil pressure in the third oil chamber 8 pressurizes the valve 11 to the left in the drawing, and the pressure oil in the first oil chamber 6 is discharged through the second oil chamber 7 to a drain (not shown). The amount of oil discharged to the drain is limited to the gap between the second flange 12 of the valve 11 and the bore flange 38 between the first oil chamber 6 and the second oil chamber 7. The set value of the line pressure is a pressure value that is in balance between the rightward biasing force of the spring 16 and the pressure that biases the valve 11 leftward by the hydraulic pressure in the third oil chamber 8. It can be extracted from However, since there are dimensional errors of each component and spring stiffness errors of the spring 16, the pressure value in the balanced state varies among individual assemblies. A shim 17 is inserted between the sleeve 21 and the spring 16 so that this pressure value can be adjusted to the set value.
is applied, the biasing force of the spring 16 is changed, and the pressure value in balance with the valve 11 is changed. To make this adjustment, first insert your finger or a screwdriver into the upper opening 42 of the valve body 1, push the spring 16, and move it to the right.In this state, move the shim 1 above the opening 42.
7 from the cylindrical part 41 of the shim locking tool 40, or if the shim 17 is added, it can be attached to the cylindrical part 41. Note that since the shim 17 is locked to the cylindrical portion 41, an E-ring is optimal.

The operation of the sleeve 21 and plunger 18 is as follows.
When the shift position is other than reverse, the throttle pressure passes through the second oil passage 5 and the second oil passage 32 to the small oil chamber 35.
is supplied to force the plunger 18 and valve 11 to the right, and as a result, the second flange 12 and the bore flange 38
Reduce the gap between the line and the line to increase line pressure. When the shift position is reverse, the throttle pressure is switched to the first oil passage 4 by a mechanism (not shown), is supplied to the large oil chamber 36 through the first oil passage 33, and operates the large diameter flange 19 and the small diameter flange 20. The plunger 18 and the valve 11 are urged to the right by the urging force increased by the area ratio, and as a result, the gap is further reduced and the line pressure is further increased.

[Brief explanation of the drawing]

FIG. 1 is an explanatory cross-sectional view of an embodiment showing the technical means of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a cross-sectional view of a conventional technique. 1... Valve body, 2... Large diameter bore, 3...
Small diameter bore, 11... valve, 16... spring, 17... shim, 18... plunger, 21...
...Sleeve, 28, 30...Gasket, 29...
...Plate, 31...Lower valve body, 40...
...Shim locking tool, 41...Cylindrical portion, 42...Opening.

Claims (1)

[Scope of utility model registration request] A bore provided in a valve body, a valve and a sleeve that fit into the bore, a plunger that fits into the sleeve, a shim interposed between the sleeve and the valve, and a lock that locks the shim and abuts the sleeve. a spring whose pressing force is adjusted by the shim to press the valve; a stopper for the sleeve; and an opening for adjusting the shim, the shim on the side of the valve body facing the mounting surface of the valve body. A regulator valve device installed near the position.