JPH02129477A - Pressure regulating valve - Google Patents

Abstract

PURPOSE:To fix a plunger and a push rod firmly and accurately by forming a groove in an end of the push rod adding load to a spool valve, while applying a ring caulking to the plunger and having it pressed in the groove of the push rod end. CONSTITUTION:A groove 38a is circumferentially formed in the end of a push rod 38 adding load to a spool valve 5. Then, this push rod 38 is inserted into a center hole of a plunger 84 being set up in one end of an electromagnet 3, applying a ring caulking 84c to the plunger 84, and press fit by means of deformation of a member of the plunger 84 is carried out to the groove 38a. In brief, a wall of the plunger 84 is bitten into the groove 38a by dint of the ring caulking and fixed firmly and positively. In addition, each form at both ends of the push rod 38 is varied to each other, whereby inverse assembly of the push rod is thus preventable.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a pressure regulating valve, and more particularly to an electromagnetic pressure regulating valve that controls fluid pressure in response to an electrical signal.

(Prior Art) Conventionally, typical ILT magnetic pressure regulating valves include a diaphragm type that receives feedbank pressure on a diaphragm surface, and a spool type that receives feedback pressure on a spool end surface. The present invention relates to the latter spool type am pressure regulating valve.

Such a conventional spool-type electromagnetic pressure regulating valve applies an electromagnetic load, a spring load, and an output pressure feed bank load to a spool valve that slides within a valve sleeve that includes a supply port, an output port, and a discharge port. By balancing these loads, the supply pressure is adjusted to an output pressure corresponding to the electric signal input to the electromagnet section and outputted (see Japanese Utility Model Application Publication No. 60-52509).

Here, when fixing the plunger to the push rod that transmits the load generated by the electromagnet in the pressure regulating valve, the tip of the push rod 201 is knurled, as shown in FIG. The plunge medium 202 was press-fitted and fixed into the knurled portion 203 to ensure strength.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional pressure regulating valve, processing of the low left is required, which increases the cost and does not provide satisfactory fixing strength.

In particular, this part is frequently driven and requires mechanical strength, and the ambient temperature when the transmission is operating is high, reaching nearly 150 degrees Celsius.In addition, it is sealed, so the internal Heating by the coil and magnetic circuit will further increase the temperature to about 160°C. However, the push rod is made of stainless steel, and the plunger is made of a magnetic material, such as pure iron, and the expansion coefficients of the two materials are different. In other words,
Since the expansion coefficient of the plunger made of pure iron is greater than that of the push rod made of stainless steel, the plunger becomes loose and easily separates from the push rod.

SUMMARY OF THE INVENTION An object of the present invention is to provide a pressure regulating valve that can eliminate the problems of the conventional pressure regulating valves, ensure fixation of the push rod during plunging, and prevent reverse assembly of the push rod. shall be.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a supply port (2
1) Applying an electromagnetic load, a spring load, and an output pressure feedback load to a spool valve (5) sliding within a valve sleeve (4) having an output port (22) and a discharge port (23), In the pressure regulating valve (1) configured to adjust and output the supply pressure to an output pressure corresponding to the input electric signal to the electromagnet part (3) by balancing these loads, the spool valve (5 ), a push rod (38) is arranged to apply a load to the push rod (38).
) is formed with a groove (38a) at the end of the plunger (84).
) is swaged, and the plunger (84) is press-fitted into the groove (38a) by deformation of the member. Further, the shapes of both ends of the pusher (38) are made to be different from each other.

(Operation and Effect of the Invention) According to the present invention, as described above, the push rod (38) that applies a load to the spool valve (5) is arranged, and the push rod (38) is arranged to apply a load to the spool valve (5).
A groove (38a) is formed at the end of the plunger (84).
) is ring crimped, and the plunger (84) is press-fitted into the groove (38a) by deformation, that is, the flesh of the plunger (84) is bitten into the groove (38a) by ring crimping. The plunger (84) and push rod (38) are firmly and reliably fixed. Also, push rod (
By making the shapes of both ends of 38) different,
Reverse assembly of the push rod (38) can be prevented.

In addition, in the above description, for convenience of explanation, the first
Although the reference numerals used in FIGS. 3 to 3 and 5 are used, these do not limit the structure of the present invention.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a sectional view of a pressure regulating valve showing a first embodiment of the present invention, and FIGS. 2 and 3 are sectional views showing a method of fixing a plunger of the pressure regulating valve and a push rod.

First, in FIG. 1, a pressure regulating valve 1 is composed of a pressure regulating valve section 2 and an electromagnet section 3. As shown in FIG. The pressure regulating valve section 2 is composed of a valve sleeve 4 and a spool valve 5, and the valve sleeve 4 has a large diameter hole 7 for accommodating a spring 6 in its internal axial direction, and a large diameter hole 7 which will be described later. A small-diameter guide hole 8 and a medium-diameter guide hole 9 for slidingly guiding the spool valve 5 are formed through the spool valve.

On the outer periphery of the valve sleeve 4 corresponding to the guide hole 9, a supply port 21, a discharge port 23, and an output port 22 that are open in the radial direction are formed in order from left to right, and the fluid flow in each of these ports is facilitated. annular notches 21a, 23a as necessary.

34a and 35a are formed.

The spool valve 5 also has two lands 31 and 32 of equal outer diameter which are slidably guided in the guide hole 9 of the medium diameter, and a guide of the small diameter adjacent to one of the land parts 31. The hole 8 is provided with a small diameter land portion 33 that is slidably guided by the liquid. The distance between the opposite ends of the land portions 31 and 32 having the same diameter is such that the output port 22 can communicate with the supply port 21 and the discharge port 23 alternately at a predetermined ratio by sliding the spool valve 5. is formed. Further, the space 34 between the lands 31 and 32 having the same diameter is always connected to the output port 22.

The sealed space 35 formed by the one land portion 31, the small-diameter land portion 33, and the guide holes 8 and 9 is communicated with the space 34 between the land portions 31 and 32 through a feedback oil passage 36. ing.

The feedback oil passage 36 is formed to diagonally penetrate the land portion 31, and is connected to the output port 22.
The output pressure obtained is fed back and supplied to the sealed space 35.

The rod-shaped portion 37 erected from the center of the end surface of the equal-diameter land portion 32 is a push rod 38 of the electromagnet portion 3, which will be described later.
Also, the portion protruding from the center of the end surface of the small diameter land portion 33 is the contact portion with the guide member 3 of the spring 6.
It is 9.

By the way, a female thread member 51 for applying a load to the spring 6 is formed in the hole 7 of the valve sleeve 4, and a male thread member 52 is formed to be screwed into the female thread member 51.
is installed. Then, by rotating the male screw member 52 and inserting it into the hole 7, the spring 6
can be pressed against the end face of the spool valve 5, and by adjusting the amount of rotation of the male threaded member 52, the amount of compression of the spring 6 can be adjusted.

When assembling the pressure regulating valve section 2, the spool valve 5 is first inserted into one end of the valve sleeve 4 in which the hole 8 is formed, with the small-diameter land section 33 facing the hole 7.
The spring 6 is inserted from the side so as to surround the guide member 39 and come into contact with the end surface of the small diameter land portion 33 . Then, while holding the spring 6, the male threaded member 52 is screwed into the female threaded member 51 of the valve sleeve 4, thereby compressing the spring 6 by a predetermined amount.

The pressure regulating valve section 2 assembled in this way is then
A flange portion 5 formed at the end of the valve sleeve 4 on the hole 7 side
3 is opposed to a flange portion 54 of the electromagnet portion 3, which will be described later, and is coupled to the tM1 stone portion 3 by caulking an end portion 56 of the case 55. For the purpose of crimping, a step 57 is formed on the inner surface of the case 55 at a portion facing the flange 54, and the crimping is performed with the flange 54 in contact with one part of the step 57. will be held.

Here, the flange portion 53 has a thick portion 61 and a thin portion 6.
2, and a tapered portion 63 is formed on the end surface of the thick portion 61. This tapered portion 63 is for forming a relief when the flange portion 53 is opposed to the flange portion 54 . In other words, because of the relief, the flanges 53 and 54 come into contact only at the peripheral edge 64, so that only the peripheral edge 64 needs to be surface-treated to bring them into contact, making assembly easier. Not only that, but the assembly is also in good condition.

Furthermore, an annular step 65 is formed at the peripheral edge of the thin portion 62 . This annular step 65 corresponds to the pressure regulating valve l after assembly.
It is formed to shorten the length.

In other words, since the pressure regulating valve 1 needs to be as short as possible due to restrictions imposed by its installation location, both flange portions 53
．． It is preferable to make the flange 54 thin. However, there is a limit to how thin the flange parts 53 and 54 can be made due to strength issues, so a thick part 61 having a constant thickness is formed and the other The annular step 65 is formed in the thin portion 62 . With this configuration, this annular step 6
The assembled electromagnet section 3 can be shortened by 5 times.

Note that 66 indicates the supply port 21, the discharge port 23, and the output port 2 provided in the radial direction of the outer circumference of the valve sleeve 4.
This is a notch for positioning between 2 and a hydraulic control system (not shown) of an automatic transmission for an automobile, for example.

In this way, after the pressure regulating valve section 2 and the magnet section iii are coupled, the male threaded member 52 is rotated and moved within the female threaded member 51, and the amount of compression of the spring 6 is adjusted. . This adjustment is performed while supplying current to the electromagnet section 3 and monitoring the output pressure of the output port 22. When this adjustment is completed, as shown at 72 in the figure, the protrusion 71 on which the female screw member 51 is formed is caulked from the outside, and the male screw member 52 is fixed.

In order to facilitate this caulking, the protruding portion 71 is formed with a thin portion.

Next, the electromagnet section 3 will be explained.

The electromagnet section 3 has a cylindrical case 55 made of a magnetic material, and a thick cylindrical core 81 also made of a magnetic material is accommodated in the case 55.

The core 81 is arranged such that the flange portion 54 formed at one end contacts and engages the flange portion 53 of the valve sleeve 4 . Further, a coil assembly 82 is clamped and fixed at the inner part of the cylindrical space formed by the case 55 and the core 81. The cylindrical case 55, core 81, and coil assembly 82 constitute a stationary portion.

On the other hand, a push rod 38 is inserted into the hollow portion 83 of the core 81, and a plunger made of a magnetic material is fixed to the other end of the push rod 38 and is attracted by the coil assembly 82. 84 constitutes a movable part.

In the movable part, the plunger 84 fixed on the other end side of the push rod 38, that is, on the side away from the pressure regulating valve part 2, has a thick disk shape, and its center on the side facing the core 81 A cylindrical recess 84a is formed in the recess 84a, in which the end of the core 81 is accommodated with a small interval when the plunger 84 is sucked. Further, the outer circumferential portion 84b faces the inner circumferential surface of the case 55 at a similarly small interval.

A linear 9 rolling bearing 86 is disposed in the hollow portion 83 of the core 81 via a sleeve 85.

After the sleeve 85 is fitted into the hollow portion 83 of the core 81, three circumferential portions of the end face of the core 81 are crimped and deformed, as shown in the figure, to form a stopper 87 to prevent the sleeve 85 from being pulled out.

Moreover, the linear 9 rolling bearing 86 accommodated in the sleeve 85 is able to freely slide within the space within the sleeve 85 while being regulated by stoppers 88 and 89. The linear 9 rolling bearing 86 is housed in a brass bearing cage 90 and a small hole formed so as to pass through the inside and outside of the bearing cage 90.
It consists of balls 91 slightly protruding from the inner and outer peripheries of the rolling bearing 86, and supports the push rod 38 via the balls 91 while allowing the push rod 38 and the sleeve 85 to rotate relative to each other.

By the way, the push rod 38 is made of a non-magnetic material such as stainless steel, and its surface is nitrided to form a nitrided layer so as to have wear resistance. and,
At one end thereof, as shown at 92 in the figure, the plunger 8 is attached.
4 is fixed by import caulking. Further, a tapered portion 93 is formed at the other end of the push rod 38 facing the rod-shaped portion 37 of the spool valve 5 to prevent incorrect assembly.

Note that 94 is a ring made of nonwoven fabric interposed between the end face of the coil assembly 82 and the flange portion 54 of the core 81;
96 is a connector fixed to the outside of the case 55, and 96 is an oil hole formed through the plunger 84 to reduce the resistance of oil filled as a countermeasure against hydraulic vibration at high temperatures. Reference numeral 97 is a lid member that closes the end of the plunger 84 of the case 55.

The electromagnet section 3 is connected to the ring 9 from one end side of the case 55.
4 and the core 81 with the coil assembly 82 fixed thereon,
The flange portion 54 is positioned and fixed using, for example, a stepped portion 57 formed on one end side of the inner surface of the case 55 to constitute a stationary portion.
After fitting and fixing by ring caulking to form a movable part, a stopper 89 is inserted and one end side of the push rod 38 of the movable part is connected to the case 55 which forms the stationary part.
from the other end of the linear 9 through the sleeve 85.
It is accommodated in a rolling bearing 86.

Then, the flange portion 53 and the stopper 88 formed on the other end side of the valve sleeve 4 of the pressure regulating valve portion 2 described above are fitted into the case 55 on the one end side of the electromagnet portion 3.
The assembly of the pressure regulating valve 1 is completed by caulking the end portion 56 of the valve sleeve 4 to the outer periphery of the flange portion 53 of the valve sleeve 4.

Since the present embodiment has the above-described configuration, when pressure fluid, such as pressure oil, is supplied from a pump or the like to the supply port 21 of the valve sleeve 4, the pressure oil is supplied from the supply port 21 to the valve sleeve 4 and the spool valve. It reaches between the land parts 31 and 32 of the spool valve 5 through an opening formed between the land parts 31 and 31 of the spool valve 5, and further via the output port 22 of the valve sleeve 4, which is always in communication with the land parts 31 and 32. The oil is then supplied to each hydraulic device in a hydraulic system that requires pressure oil, such as an automatic transmission.

The pressure P of the pressure oil output at the output port 22 is simultaneously fed back via the feedback oil passage 36 to the land portion 31 and the small diameter land portion 33 adjacent thereto.
The cross-sectional area A of the land portion 31 is guided into the sealed space 35 formed by the valve sleeve 4.

It is applied to the area difference A + A z obtained by subtracting the cross section MiAt of the small diameter land portion 33 from .

The force (Al-Al) P generated by this pressure is added to the force FNF pressed by the spring 6, and the spool valve 5 is pressed rightward in the figure by (/'zAx)P+Fsp. The spool valve 5 receives this force and the force F generated by the electromagnet section 3. , are slidably displaced within the valve sleeve 4 to a position where they are balanced.

In this way, the sliding displacement of the spool valve 5 moves the land portions 31 and 32, and the supply port 2 of the valve sleeve 4 moves.
1 and the discharge port 23 are controlled to open and close at a predetermined ratio with respect to the output port 22, and as a result, the output pressure P at the output port 22 corresponds to the electromagnetic signal input to the electromagnet part 3, P = (FOOL Fsr) / (Al At
).

Next, the main structure of the present invention will be explained in detail using FIGS. 2 and 3.

First, as shown in FIG. 2(a), the plunger 84 has a six 84a formed at its center to which the push rod 38 is fixed, and a slight build-up 84b around the six 84a. Further, oil passage holes 96 are provided at two locations.

As shown in FIG. 3(a), the tip of the push rod 38, which has a groove 38a formed on its periphery, is fitted into the six 84a of the plunger 84 configured in this manner.

Next, as shown in FIG. 3(b), by performing a ring crimping 84c in the plunger 84, the member of the plunger 84 can be deformed and the meat can bite into the groove 38a. Therefore, the push rod 38 and the plunger 84 can be fixed. A front view of the plunger 84 showing its fixed state is shown in FIG. 2(b).

In addition, as shown in FIG.
9 have different shapes. This is to prevent reverse assembly of the push rod 38. For example, if you try to attach the plunger 84 to the tapered part 93 at one end 99 of the push rod 38 by mistake, the shape of that part will be different from that of the other end. Since the shape is different from that of 98, it cannot be fixed as described above. For example, by managing the press-fitting load in the press-fitting process before import crimping, the press-fitting load becomes "0" because the diameter of the shaft is small, and reverse assembly can be automatically detected.

Therefore, reverse assembly of the plunger 84 and /1t38a can be effectively prevented.

Next, FIG. 5 shows a sectional view of a pressure regulating valve showing another embodiment of the present invention.

In the figure, 100 is a pressure regulating valve, which consists of a pressure regulating valve section 102 and an electromagnet section 103, as in the first embodiment. The pressure regulating valve section 102 has a valve sleeve 104.
and a spool valve 105.

In the pressure regulating valve 100, 106 is a spring;
107 is a large diameter hole that accommodates the spring 106;
08 is a small diameter guide hole, and 109 is a medium diameter guide hole. In addition, 121 is a supply port, 122 is an output port, 123
is a discharge port, and the valve sleeve 104 has an annular notch 121a, as a part of the ports 121 and 123.
123a, 134a, and 135a are formed.

The spool valve 105 has equal diameter land portions 131 and 132.
and a small diameter land portion 133, the valve sleeve 10
4, a space 134 and a closed space 135 are formed.

A feedback oil passage 1 is provided in the land portion 131.
36 are formed. In addition, 137 is a protrusion, 138
1 is a push rod, 139 is a rod-shaped portion, 141 and 187.

189 is a stopper.

The spring 106 is adjusted by screwing the male threaded member 143 into the female threaded member 151.

Here, 143a is a locking hole, 144 is a fitting pin, 144
a is its lower end, and 145 is a hole.

Reference numerals 153 and 154 are flanges of the valve sleeve 104 and the electromagnet 103, respectively, and by caulking the end 156 of the case 155, both flanges 15
3, 154 are connected. Here, 157 is a step, 1
61 is a thick part, 162 is a thin part, 163 and 166 are tapered parts, 164 is a peripheral part, and 165 is an annular step.

Further, the electromagnet section 103 includes a stationary section consisting of a cylindrical core 181 and a coil assembly 182, and a plunger 18.
4 and a push rod 138.

In the core 181, 183 is a hollow part, 184a is a recessed part, 184b is an outer peripheral part, 185 is a sleeve, 186 is a linear 9 rolling bearing, 190 is a bearing cage, 191 is a ball accommodated in the bearing cage 190, and 193 is an abutment part, 194 is a ring made of nonwoven fabric, 195
196 is a connector, 196 is an oil hole, and 197 is a lid member.

In this embodiment, the structure of the spool valve 105 in the pressure regulating valve section 102, the structure of the valve and sleeve 104, and the structure of the joint between the pressure regulating valve section 102 and the electromagnet section 103 are different from those of the first embodiment. It's different.

That is, the valve sleeve 104 has a large diameter hole 107 for accommodating the spring 106 in its internal axial direction, followed by a small diameter guide hole 108 and a medium diameter guide hole for slidingly guiding a spool valve 105, which will be described later. 109 is formed to penetrate therethrough.

On the outer periphery of the valve sleeve 104 corresponding to the guide hole 109, a supply port 121, an output port 122, and a discharge port 123, which are opened in the radial direction, are formed in order from right to left to ensure smooth fluid flow in each of these ports. Annular cutouts 121a, 123a,
134a and 135a are formed.

The spool valve 105 also has two lands 131 with equal outer diameters that are slidably guided in the medium diameter guide hole 109.
, 132, and a small-diameter land portion 133 adjacent to one of the land portions 131 and slidably guided in the small-diameter guide hole 108. The distance between the opposite ends of the land portions 131 and 132 having the same diameter is such that the output port 122 can communicate with the supply port 121 and the discharge port 23 alternately at a predetermined ratio by sliding the spool valve 105. formed to the dimensions.

Also, the space 13 between the lands 131 and 132 having the same diameter
4 is always communicated to output port 122.

Then, the one land portion 131 and the small diameter land portion 13
A sealed space 135 formed by the guide holes 108 and 109 is communicated with the space 134 between the lands 131 and 132 through a feedback oil passage 136. The feedback oil passage 136 is formed to diagonally penetrate the land portion 131, and feeds back the output pressure obtained from the output port 122 and supplies it to the sealed space 135.

Note that a protruding portion 137 from the center of the end surface of the small diameter land portion 133 is a contact portion with a push rod 138 of the electromagnet portion 103, which will be described later, and is also a rod-shaped portion erected from the center of the end surface of the land portion 132. 139 is the spring 10
This is a stroke limiting member for the spool valve 105 that also serves as a guide for No. 6.

Incidentally, the hole 145 of the valve sleeve 104 has a female screw member 15 for applying a load to the spring 106.
1 is formed, and a male screw member 143 that is screwed into the female screw member 151 is provided. By rotating the male threaded member 143 and inserting it into the hole 145, the spring 106 can be pressed against the end face of the spool valve 105, and the male threaded member 143 can be pressed against the end face of the spool valve 105.
By adjusting the amount of rotation of the spring 106
The amount of compression can be adjusted.

When assembling the pressure regulating valve section 102, first, the spool valve 105 is inserted from the left side into one end of the valve sleeve 104 in which the small diameter guide hole 108 is formed, with the small diameter land section 133 facing. The spring 106 is inserted from the hole 145 side so as to surround the rod-shaped portion 139 and come into contact with the end surface of the land portion 132.

Then, while holding the spring 106, the male threaded member 143 is inserted into the female threaded member 151 of the valve sleeve 151.
By screwing into the spring 106, the spring 106 is compressed by a predetermined amount.

Furthermore, in the structure of the joint between the pressure regulating valve section 102 and the electromagnet section 103, the linear 9 rolling bearing 186 accommodated in the sleeve 185 of the electromagnet section 103 is connected to the push rod 13.
Stopper 141 consisting of a disc spring provided at the left end of 8
and a brass stopper 1 provided on the plunger 184 side.
While being regulated by 89, it can freely slide in the space inside the sleeve 185. In addition, the stopper 14
1 is provided with a nonwoven fabric member 142 on the pressure regulating valve portion 102 side. This insensitive cloth member 142 is a retaining ring 167
Fixed by

Since this embodiment has the above-described configuration, pressure fluid is supplied from a pump or the like to the supply port 121 of the valve sleeve 104.
For example, when pressure oil is supplied, the pressure oil is supplied to the supply port 121
From the valve sleeve 104 and the land portion 1 of the spool valve 105
31 and reaches between the land portions 131 and 132 of the spool valve 5, and furthermore, the land portion 1
The oil is supplied to each hydraulic device in a hydraulic system that requires pressure oil, such as an automatic transmission, for example, through the output port 122- of the valve sleeve 104, which is always in communication with the valve sleeve 104 and 31 and 132.

The pressure P of the pressure oil output at the outlet port 22 is simultaneously returned via the feedback oil passage 136 and is formed by the land portion 131, the small diameter land portion 133 adjacent thereto, and the valve sleeve 104. The cross section of the land portion 131 is guided into the sealed space 135! R.A.
It is applied to the area difference A+Ax obtained by subtracting the cross-sectional area A2 of the small diameter land portion 133 from l.

The force (AI-Az) P generated by this pressure is the force F generated by the electromagnet section 103. , and therefore the spool valve 105 receives this resultant force (A
tAx)P+Fs. , is pushed to the left in the figure. Then, the spool valve 105 is slid within the valve sleeve 104 to a position where this resultant force and the force Fsp pressed by the spring 106 are balanced.

In this way, the lands 131 and 132 move due to the sliding displacement of the spool valve 105, and the valve sleeve 104
The supply port 121 and the discharge port 123 are controlled to open and close at a predetermined ratio with respect to the output port 122, and as a result, the output pressure P at the output port 122 is lower than that of the electromagnet section 103.
In response to the electromagnetic signal input to P= (Fsp
Fi. L ) / (At A).

Also in the pressure regulating valve configured in this way, the push rod 13 that applies a load to the spool valve 105 is used in the same way as described above.
As shown in FIG. 6, a groove 138a is formed at the end of the push rod 138, the plunger 184 is crimped, and the plunger 184 is press-fitted into the groove 138a by deformation. It is configured to do so.

Further, as shown in FIG. 6, an end 198 of the push rod 138 to which the plunger 184 is fixed and an end 199 of the other end.
are formed with different shapes. With this configuration, reverse assembly of the push rod 138 can be effectively prevented.

Note that the present invention is not limited to the above embodiments,
Various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a pressure regulating valve showing an embodiment of the present invention, Fig. 2 is a front view of the plunger of the pressure regulating valve, and Fig. 3 is a sectional view of the process of fixing the plunger and push rod of the pressure regulating valve. figure,
FIG. 4 is a perspective view of the push rod of the pressure regulating valve, FIG. 5 is a sectional view of a pressure regulating valve showing another embodiment of the present invention, and FIG. 6 is a perspective view of the push rod of the pressure regulating valve. FIG. 7 is a cross-sectional view showing how the plunger and push rod of a conventional pressure regulating valve are fixed. 1.100... Pressure regulating valve, 2.102... Pressure regulating valve section, 3.103... Electromagnet section, 4,104... Valve sleeve, 5゜105... Spool valve, 6,106・・・
・Spring, 21°121... Supply port, 22.
122... Output port, 23° 123... Ejection port, 31.32.131, 132... Land portion, 3
3.133...Small diameter land part, 36.136...Feedback oil path, 38.138-...Push rod, 38a
, 138a-groove, 53.54.153, 154...
・Flange part, 55.155...Case, 81.18
1... Core, 82.182... Coil assembly, 84
．． 184... Plunger, 84a... Hole, 84c.
...Ring crimping, 86.186...Linear 9 rolling bearing, 93...Taber part, 96...Oil hole, 98
．． 99.198, 199... end. Patent applicant: Aisin AW Daplu Co., Ltd. Agent: Patent attorney: Mamoru Shimizu (one other person) Figure 2 (a) (b) Figure 3 (a) (b')

Claims (2)

[Claims] (1) By applying a load from an electromagnet, a spring load, and an output pressure feedback load to a spool valve that slides inside a valve sleeve that has a supply port, an output port, and a discharge port, and balancing these loads,
In a pressure regulating valve configured to adjust supply pressure to an output pressure corresponding to an input electric signal to an electromagnet part and output it,
A push rod that applies a load to the spool valve is arranged, a groove is formed at the end of the push rod, and a ring is crimped on the plunger,
A pressure regulating valve characterized in that the plunger is press-fitted into the groove by deforming a member of the plunger. (2) The pressure regulating valve according to claim 1, wherein the push rod has different shapes at both ends.