WO2018220938A1 - Hydraulic control apparatus for vehicle transmission device - Google Patents

Abstract

This hydraulic control apparatus is provided with: a resin body (4a) that has an oil path (87); and an orifice plug (100) that is provided separately from the body (4a), that has an orifice hole (102a) having an inner diameter smaller than the oil path diameter of the oil path (87), and that is provided in a state of being housed inside the oil path (87) and being fixed to a wall (87a) of the oil path (87).

Description

Hydraulic control device for vehicle transmission

The present invention relates to a hydraulic control device for a vehicle transmission device mounted on a vehicle, for example.

2. Description of the Related Art Conventionally, a hydraulic control device for a vehicle drive device includes a valve body having various valves (hereinafter simply referred to as valves) such as a plurality of linear solenoid valves and switching valves, and an oil passage that communicates these valves. Is popular. The valve body is mainly made of metal such as aluminum die casting, but in recent years, a valve body having a single body part has been developed by adopting a three-dimensional additive manufacturing method using a 3D printer ( Patent Document 1).

In such a single member body, for example, an insertion hole is provided across a plurality of oil passages, and an orifice member having a plurality of orifice holes that are axial and perpendicular to the center line is inserted into the insertion hole and fixed. May be assembled as a valve body. Thus, in the plurality of oil passages traversed by the insertion holes, the plurality of orifice holes of one orifice member are provided in the axial direction and the circumferential direction so as to communicate with the respective oil passages. According to this orifice member, since a plurality of orifice holes are collected into one orifice member, an increase in the number of parts of the orifice member can be suppressed.

JP 2017-053421 A

However, in the valve body described in Patent Document 1 described above, since the orifice member is provided across a plurality of oil passages, the seal between the insertion hole of the body portion and the orifice member is the outer periphery of the orifice member. It becomes a seal on the cylindrical surface. For this reason, since there is a clearance between the insertion hole and the orifice member, there is a possibility that the hydraulic oil leaks between the oil passages communicating with the adjacent orifice holes.

Therefore, an object of the present invention is to provide a hydraulic control device for a vehicle transmission device that can suppress leakage of hydraulic oil from an orifice portion while the body portion of the valve body is made of resin.

A hydraulic control device for a vehicle transmission device according to the present disclosure includes a resin-made body portion having an oil passage, and an orifice hole that is formed separately from the body portion and has an inner diameter smaller than the oil passage diameter of the oil passage. And an orifice portion provided in a state of being accommodated in the oil passage and fixed by an inner peripheral portion of the oil passage.

According to the hydraulic control device of the vehicle transmission device, the orifice portion is housed inside the oil passage and is provided in a state of being fixed by the inner peripheral portion of the oil passage. For this reason, hydraulic oil does not leak into the adjacent oil passage from the gap between the orifice and body, and the leakage of hydraulic oil from the orifice is suppressed while the valve body is made of resin. Can do.

It is the schematic which shows the vehicle carrying the hydraulic control apparatus of the transmission device for vehicles which concerns on 1st Embodiment. It is a perspective view which shows the hydraulic control apparatus which concerns on 1st Embodiment. It is a disassembled perspective view which shows the hydraulic control apparatus which concerns on 1st Embodiment. It is sectional drawing which shows the hydraulic control apparatus which concerns on 1st Embodiment. It is sectional drawing which shows the orifice which concerns on 1st Embodiment provided in the oil path of the hydraulic control apparatus. It is sectional drawing which shows the orifice which concerns on 2nd Embodiment provided in the oil path of a hydraulic control apparatus. It is sectional drawing which shows the 3rd orifice provided in the oil path of the hydraulic control apparatus. It is sectional drawing which shows the 4th orifice provided in the oil path of the hydraulic control apparatus. FIG. 6C is a cross-sectional view taken along line CC of FIG. 6B.

<First Embodiment>
Hereinafter, a first embodiment of a hydraulic control device for a vehicle transmission device will be described with reference to FIGS. 1 to 5A. First, a schematic configuration of a vehicle 1 on which an automatic transmission 3 is mounted as an example of a vehicle transmission device will be described with reference to FIG. As shown in FIG. 1, a vehicle 1 according to this embodiment includes, for example, an internal combustion engine 2, an automatic transmission 3, a hydraulic control device 4 and an ECU (control device) 5 that control the automatic transmission 3, and wheels 6. And. The internal combustion engine 2 is an internal combustion engine such as a gasoline engine or a diesel engine, and is connected to the automatic transmission 3. In the present embodiment, the automatic transmission 3 is a so-called FR (front engine / rear drive) type. However, the automatic transmission 3 is not limited to the FR type, and may be an FF (front engine / front drive) type. Further, the same hydraulic control device 4 may be shared by the FR type automatic transmission 3 and the FF type automatic transmission. In this embodiment, as an example of a vehicle to which the vehicle transmission device is applied, a case of a vehicle using only an internal combustion engine as a drive source is described. However, the present invention is not limited to this, and the drive source may be, for example, an internal combustion engine. You may apply to the hybrid vehicle using an engine and an electric motor.

The automatic transmission 3 has a torque converter 30, a speed change mechanism 31, and a mission case 32 that accommodates them. The torque converter 30 is interposed between the internal combustion engine 2 and the transmission mechanism 31 and can transmit the driving force of the internal combustion engine 2 to the transmission mechanism 31 via the working fluid.

The transmission mechanism 31 is a multi-stage transmission mechanism that can form a plurality of shift stages by engaging and disengaging a plurality of clutches and brakes including the first clutch (friction engagement element) C1. The transmission mechanism 31 includes a hydraulic servo 33 that can engage and disengage the first clutch C1 by supplying and discharging hydraulic pressure. However, the transmission mechanism 31 is not limited to a multi-stage transmission, and may be a continuously variable transmission mechanism such as a belt-type continuously variable automatic transmission mechanism.

The hydraulic control device 4 is configured by, for example, a valve body, generates line pressure, modulator pressure, and the like from hydraulic pressure supplied from an oil pump (not shown), and based on a control signal from the ECU 5, The hydraulic pressure for controlling the brakes can be supplied and discharged. The detailed configuration of the hydraulic control device 4 will be described later.

The ECU 5 includes, for example, a CPU, a ROM that stores a processing program, a RAM that temporarily stores data, an input / output port, and a communication port. Various control signals such as a control signal to the hydraulic control device 4 are provided. The signal is output from the output port.

Next, the configuration of the hydraulic control device 4 described above will be described in detail with reference to FIGS. As shown in FIGS. 2 and 3, the hydraulic control device 4 is a valve body having a resin body portion 4 a (see FIG. 5A), and accommodates the pressure regulating portions 71 of the linear solenoid valve 70 and the solenoid valve 79. A solenoid installation section 40 that performs switching, a valve installation section 60 that accommodates a valve such as a switching valve 66 (see FIG. 4), and an oil passage installation that is interposed between the solenoid installation section 40 and the valve installation section 60. The part 50 is laminated and formed. In the present embodiment, the body portion 4a is a synthetic resin block in which the second block 42, the first block 41, the third block 43, the fifth block 52, the sixth block 61, and the eighth block 63 are laminated in order. And a valve body base having an oil passage and a hole for installing the valve.

In the present embodiment, the stacking direction L is the vertical direction, the solenoid installation part 40 is directed downward (first direction D1), and the valve installation part 60 is directed upward (second direction D2). 60 is attached to the mission case 32. That is, in the stacking direction L, the direction from the oil passage installation unit 50 to the solenoid installation unit 40 is a first direction D1, and the opposite direction is a second direction D2. A longitudinal direction of a center line L1 (see FIG. 4) of a linear solenoid valve 70 described later is a width direction W.

As shown in FIGS. 2 to 4, the solenoid installation portion 40 has a substantially plate-shaped block made of a synthetic resin including a first block 41, a second block 42, and a third block 43. These three layers are laminated and integrated with each other by, for example, injection molding.

The first block 41 is arranged at the center of the three layers constituting the solenoid installation portion 40, and alternately turns inward from one end portion in the width direction W orthogonal to the stacking direction L and the other end portion on the opposite side. A plurality of holes 44 are formed. In the present embodiment, the first block 41 is formed by insert-molding a bottomed cylindrical metal sleeve 73 in the primary injection molding of the DSI method, and the inside of the sleeve 73 is connected to the hole 44. Has been. The center line L1 of each sleeve 73 is provided in parallel with the width direction W.

Each sleeve 73 is provided with a linear solenoid valve 70 or a solenoid valve 79. The linear solenoid valve 70 and the solenoid valve 79 provided are provided with the center lines arranged in parallel and on the same plane. The linear solenoid valve 70 is housed in a sleeve 73, and includes a pressure adjusting unit 71 that adjusts the hydraulic pressure by a spool 70p, and a solenoid unit 72 that drives the pressure adjusting unit 71 according to an electrical signal. The pressure adjusting unit 71 includes a slidable spool 70p for adjusting hydraulic pressure, and an urging spring 70s formed of a compression coil spring that presses the spool 70p in one direction.

Each sleeve 73 is formed with a port portion 70a having a large number of through holes on the peripheral side surface. Here, the port portion 70 a includes a port formed on the inner peripheral surface of the sleeve 73, a communication hole communicating from the port to the outer diameter side, and an opening portion where the communication hole opens on the outer peripheral surface of the sleeve 73. ing. Each port part 70a is closed by the synthetic resin which comprises the 1st block 41 in an opening part. The linear solenoid valve 70 here can supply hydraulic pressure to, for example, a hydraulic servo 33 (see FIG. 1) that can engage and disengage the first clutch C1. In the present embodiment, the linear solenoid valve 70 is provided with each port portion 70a so that the hydraulic pressure is supplied from the second block 42 side and the hydraulic pressure is output from the third block 43 side. However, it is needless to say that the present invention is not limited to this.

In this embodiment, the linear solenoid valve 70 generates an output pressure according to an electric signal based on the input hydraulic pressure. The solenoid valve 79 is an on / off solenoid valve that switches between supply and stop of output pressure in accordance with an electrical signal. The linear solenoid valve 70 and the solenoid valve 79 are arranged in parallel and adjacent to each other along a direction intersecting the stacking direction L, for example, the orthogonal direction X.

The first block 41 includes a first surface 411 provided on the first direction D1 side, a plurality of semicircular grooves 411a formed on the first surface 411, and a convex formed on the first surface 411. Part 411b. The plurality of grooves 411 a communicate with a part of the plurality of port portions 70 a of the linear solenoid valve 70 or the solenoid valve 79. The convex portion 411b protrudes toward the second block 42. The first block 41 is formed on the second surface 412 provided on the second direction D2 side, a plurality of semicircular grooves 412a formed on the second surface 412, and the second surface 412. And a convex portion 412b. The plurality of grooves 412 a communicate with a part of the plurality of port portions 70 a of the linear solenoid valve 70 or the solenoid valve 79. The convex portion 412 b protrudes toward the third block 43. Further, the first block 41 has a plurality of holes 44 that are formed along the first surface 411 and the second surface 412 between the first surface 411 and the second surface 412 and accommodate the pressure adjusting unit 71. .

The second block 42 includes a third surface 423 provided to face the first surface 411 of the first block 41, a plurality of semicircular grooves 423a formed on the third surface 423, and a third surface. And a concave portion 423b formed in 423. The plurality of grooves 423a are provided to face the plurality of grooves 411a. Further, by laminating the third surface 423 so as to face the first surface 411 of the first block 41, a plurality of oil passages 80 are formed by the plurality of grooves 411a and the plurality of grooves 423a. The concave portion 423b is recessed in the same direction as the protruding direction of the convex portion 411b of the first surface 411, and the convex portion 411b is fitted with a gap in the stacking direction L. The first block 41 and the second block 42 are laminated by fitting the convex portion 411b and the concave portion 423b between the adjacent oil passages 80, and by injection molding using the gap between the convex portion 411b and the concave portion 423b as a cavity. It is integrated.

The third block 43 is stacked on the side opposite to the second block 42 with respect to the first block 41. The third block 43 is formed on the fourth surface 434 facing the second surface 412 of the first block 41, a plurality of semicircular grooves 434 a formed on the fourth surface 434, and the fourth surface 434. And a concave portion 434b. The plurality of grooves 434a are provided to face the plurality of grooves 412a. Further, by laminating the fourth surface 434 so as to face the second surface 412 of the first block 41, a plurality of oil passages 81 are formed by the plurality of grooves 412a and the plurality of grooves 434a. The concave portion 434b is recessed in the same direction as the protruding direction of the convex portion 412b of the second surface 412, and the convex portion 412b is fitted with a gap in the stacking direction L. The first block 41 and the third block 43 are laminated by fitting the convex portion 412b and the concave portion 434b between the adjacent oil passages 81, and by injection molding using the gap between the convex portion 412b and the concave portion 434b as a cavity. It is integrated.

The oil passage 81 formed by the first block 41 and the third block 43 communicates with the valve installation portion 60 via the oil passage installation portion 50, or the port portion 70 a of the linear solenoid valve 70 and the solenoid valve 79. Communicate with each other. The oil passage 80 formed by the first block 41 and the second block 42 communicates with the port portion 70a of the linear solenoid valve 70 and the port portions of the solenoid valve 79 and communicates with various original pressure supply portions. An original pressure such as a line pressure or a modulator pressure is supplied to the linear solenoid valve 70 or the solenoid valve 79.

Next, the oil passage installation part 50 has a substantially plate-like block made of a synthetic resin of two layers of a fourth block (second layer) 51 and a fifth block (first layer) 52. Two layers are laminated and integrated with each other by, for example, injection molding. In this embodiment, the 4th block 51 is arrange | positioned at the 2nd direction D2 side of the 3rd block 43, and the 4th block 51 and the 3rd block 43 are comprised by the single member. However, the fourth block 51 and the third block 43 are not limited to being a single member, and may be formed by separate members and integrated by injection molding, adhesion, welding, or the like.

The fourth block 51 is provided on the second direction D2 side, and has a fifth surface (third surface) 15 facing the sixth surface 16 and a semicircular large diameter formed on the fifth surface 15. A plurality of third grooves 15 a and a plurality of small diameter grooves 15 c, and a convex portion 15 b formed on the fifth surface 15. The convex portion 15 b protrudes in the second direction D <b> 2 and is disposed so as to surround the plurality of grooves 15 a and 15 c on the fifth surface 15. The plurality of third grooves 15 a are disposed so as to overlap with the pressure regulating unit 71 of the linear solenoid valve 70 as viewed from the stacking direction L. The plurality of small-diameter grooves 15 c are disposed so as to overlap the solenoid portion 72 of the linear solenoid valve 70 as viewed from the stacking direction L.

The fifth block 52 has a sixth surface (first surface) 16 provided to face the fifth surface 15 of the fourth block 51, and a semicircular cross-sectional large diameter formed on the sixth surface 16. A plurality of first grooves 16 a and a plurality of small-diameter grooves 16 c and a recess 16 b formed in the sixth surface 16 are provided. The plurality of first grooves 16a are provided to face the plurality of third grooves 15a. The plurality of small diameter grooves 16c are provided to face the plurality of small diameter grooves 15c. Further, by stacking the sixth surface 16 so as to face the fifth surface 15 of the fourth block 51, the plurality of first grooves 16a and the plurality of third grooves 15a are used to form a plurality of large-diameter firsts. Are formed, and a plurality of small diameter oil passages 84 are formed by the plurality of small diameter grooves 16c and the plurality of small diameter grooves 15c. The concave portion 16b is recessed in the same direction as the protruding direction of the convex portion 15b of the fifth surface 15, and the convex portion 15b is fitted with a gap in the stacking direction L. That is, the recess 16b is disposed on the sixth surface 16 so as to surround the plurality of grooves 16a and 16c. The fourth block 51 and the fifth block 52 are stacked by fitting the convex portion 15b and the concave portion 16b between the adjacent oil passages 83 and 84, and use the gap between the convex portion 15b and the concave portion 16b as a cavity. It is integrated by molding. In the present embodiment, the cross-sectional shapes of the first oil passage 83 and the small diameter oil passage 84 are substantially circular. The substantially circular shape includes a shape in which the cross sections of the oil passages 83 and 84 are continuously curved, such as an elliptical shape, in addition to a perfect circular shape.

The first oil passage 83 communicates with a communication oil passage 91 formed in at least one of the fourth block 51 and the fifth block 52. The communication oil passage 91 is, for example, a large diameter oil passage 81 formed between the second surface 412 and the fourth surface 434 or a large diameter formed between the seventh surface 17 and the ninth surface 19. To the second oil passage 82 and the like. The small diameter oil passage 84 communicates with a small diameter communication oil passage 92 formed in at least one of the fourth block 51 and the fifth block 52. The small-diameter communication oil path 92 is smaller in diameter than the communication oil path 91, for example, a small-diameter oil path formed between the second surface 412 and the fourth surface 434, or the seventh surface 17 and the ninth surface 19. It communicates with a small-diameter oil passage formed between the two. Thereby, the oil passages 83 and 84 are, for example, hydraulic fluid between the fourth block 51 and the fifth block 52, or from the fourth block 51 to the fourth block 51, or from the fifth block 52 to the fifth block 52. Can be distributed. Further, the oil passages 83 and 84 communicate, for example, two of the hydraulic servo 33 of the first clutch C1, the port portion 70a of the linear solenoid valve 70, and the port portion 66a of the switching valve 66. In the present embodiment, the first oil passage 83 is used to distribute a large flow rate of hydraulic oil such as a line pressure, a range pressure, and a hydraulic pressure for controlling a friction engagement element. The small-diameter oil passage 84 is used for circulating a small flow rate of hydraulic oil such as a signal pressure of the switching valve 66, for example.

In the present embodiment, the height of the convex portion 15b is smaller than the depth of the concave portion 16b. Further, a seal member is filled between the front end surface of the convex portion 15b and the bottom surface of the concave portion 16b, and the convex portion 15b and the concave portion 16b are in a joined state by the seal member. Further, the seal member is an injection molding material, and the convex portion 15b and the concave portion 16b are in a joined state by injection molding.

Next, the valve installation part 60 has a substantially plate-like block made of a synthetic resin of three layers of a sixth block (third layer) 61, a seventh block (first layer) 62, and an eighth block 63. These three layers are laminated and integrated with each other by, for example, injection molding. The valve installation unit 60 is stacked on the opposite side of the stacking direction L from the solenoid installation unit 40 with respect to the oil passage installation unit 50 and accommodates the switching valve 66.

The sixth block 61 is arranged at the center of the three layers constituting the valve installation portion 60, and a plurality of the sixth blocks 61 are directed inward from one end portion in the width direction W orthogonal to the stacking direction L and the other end portion on the opposite side. The hole 64 is formed. In the present embodiment, the sixth block 61 is formed by insert-molding a bottomed cylindrical metal sleeve 65 in the primary injection molding of the DSI method. Has been. A center line L2 of each sleeve 65 is provided in parallel with the width direction W.

Each sleeve 65 is formed with a switching valve 66 that is a spool valve. Each sleeve 65 includes a slidable spool 66p, an urging spring 66s formed of a compression coil spring that presses the spool 66p in one direction, and a stopper 67 that causes the urging spring 66s to press the spool 66p. The switching valve 66 is formed by these. The stopper 67 is fixed near the opening of the sleeve 65 by a fastener 68. Each sleeve 65 has a port portion 66a formed of a large number of through holes on the peripheral side surface. The port portion 66 a here has a port formed on the inner peripheral surface of the sleeve 65, a communication hole communicating from the port to the outer diameter side, and an opening portion where the communication hole opens on the outer peripheral surface of the sleeve 65. ing. Each port part 66a is closed by the synthetic resin which comprises the 6th block 61 in an opening part. Note that the switching valve 66 can switch, for example, the oil passage or adjust the hydraulic pressure. The switching valve 66 capable of switching the oil path has a movable spool 66p, a biasing spring 66s that biases the spool 66p in one direction, and a direction in which the spool 66p is opposed to the biasing spring 66s by the supplied hydraulic pressure. And a hydraulic oil chamber 66b to be moved.

The sixth block 61 includes a seventh surface (fourth surface) 17 facing the ninth surface 19, a plurality of semi-circular fourth grooves 17 a formed on the seventh surface 17, and a seventh surface. 17 and a convex portion 17b formed on the base plate 17. The plurality of fourth grooves 17 a communicate with a part of the plurality of port portions 66 a of the switching valve 66. The convex portion 17 b is formed between the fourth grooves 17 a adjacent to each other on the seventh surface 17 and protrudes toward the seventh block 62. The sixth block 61 is formed on the eighth surface 618 provided on the opposite side of the seventh surface 17, a plurality of semicircular grooves 618 a formed on the eighth surface 618, and the eighth surface 618. A convex portion 618b. The plurality of grooves 618 a communicate with a part of the plurality of port portions 66 a of the switching valve 66. The convex portion 618 b is formed between adjacent grooves 618 a on the eighth surface 618 and protrudes toward the eighth block 63. Further, the sixth block 61 has a plurality of holes 64 that are formed along the seventh surface 17 and the eighth surface 618 between the seventh surface 17 and the eighth surface 618 and accommodate the switching valve 66.

The seventh block 62 is laminated on the opposite side to the mission case 32 with respect to the sixth block 61. In the present embodiment, the seventh block 62 is disposed on the second direction D2 side of the fifth block 52, and the seventh block 62 and the fifth block 52 are configured by a single member. However, the seventh block 62 and the fifth block 52 are not limited to being a single member, and may be formed by separate members and integrated by injection molding, adhesion, welding, or the like.

The seventh block 62 includes a ninth surface (second surface) 19, a plurality of semicircular second grooves 19 a formed in the ninth surface 19, and a recess 19 b formed in the ninth surface 19. And have. The plurality of second grooves 19a are provided to face the plurality of fourth grooves 17a. In addition, the ninth surface 19 is opposed to the seventh surface 17 of the sixth block 61 and stacked in the stacking direction L, so that the plurality of fourth grooves 17a and the plurality of second grooves 19a include a plurality of Two oil passages 82 are formed. The oil passages 83 and 84 and the second oil passage 82 are in a state of intersecting, for example, orthogonally crossing the opposing surfaces such as the seventh surface 17 and the ninth surface 19.

The concave portion 19b is recessed in the same direction as the protruding direction of the convex portion 17b of the seventh surface 17, and the convex portion 17b is fitted with a gap in the stacking direction L. In the present embodiment, the sixth block 61 and the seventh block 62 are stacked by fitting the convex portion 17b and the concave portion 19b between the adjacent second oil passages 82, and the convex portion 17b and the concave portion 19b. An injection molding material is injected into the gap and integrated by injection molding with the gap as a cavity.

In the present embodiment, the seventh block 62 and the fifth block 52 are a single member and constitute the first layer. That is, the seventh block 62 and the fifth block 52 include the sixth surface 16, the first groove 16a, the ninth surface 19 provided on the opposite side of the sixth surface 16, the second groove 19a, A communication oil passage 91 communicating the first groove 16a and the second groove 19a.

The eighth block 63 is stacked on the opposite side of the sixth block 61 from the seventh block 62, and is attached to the mission case 32. The eighth block 63 has a tenth surface 630, a plurality of semicircular grooves 630 a formed in the tenth surface 630, and a recess 630 b formed in the tenth surface 630. The plurality of grooves 630a are provided to face the plurality of grooves 618a. Further, by laminating the tenth surface 630 so as to face the eighth surface 618 of the sixth block 61, the plurality of grooves 630 a and the plurality of grooves 618 a form a plurality of oil passages 85.

The concave portion 630b is recessed in the same direction as the protruding direction of the convex portion 618b of the eighth surface 618, and the convex portion 618b is fitted with a gap in the stacking direction L. The sixth block 61 and the eighth block 63 are laminated by fitting the convex portion 618b and the concave portion 630b between the adjacent oil passages 85, and by injection molding using the gap between the convex portion 618b and the concave portion 630b as a cavity. It is integrated.

In this embodiment, for example, a drain oil passage 86 (see FIGS. 2 and 3) is provided between the sixth block 61 and the seventh block 62. The drain oil passage 86 is formed in both the seventh surface 17 and the ninth surface 19 by the fourth groove 17 a formed in the seventh surface 17 and the second groove 19 a formed in the ninth surface 19. The hydraulic fluid is drained by communicating with the outside of the sixth block 61 and the seventh block 62. Note that no joint is provided around the drain oil passage 86.

Here, of the oil passages 82 and 85 communicated with the switching valve 66 in the valve installation portion 60, the large-diameter oil passage that circulates a large flow rate of hydraulic oil is, for example, another switching in the valve installation portion 60. It communicates with the valve 66, communicates with another switching valve 66 through the first oil passage 83 of the oil passage installation section 50, or with the first oil of the oil passage installation section 50. The linear solenoid valve 70 or the solenoid valve 79 of the solenoid installation unit 40 is communicated via the path 83. Of the oil passages 82, 85 communicated with the switching valve 66 in the valve installation portion 60, a small-diameter oil passage that circulates a small flow rate of hydraulic oil is, for example, another switching valve 66 in the valve installation portion 60. To the other switching valve 66 via the small-diameter oil passage 84 of the oil passage installation section 50, or via the small-diameter oil passage 84 of the oil passage installation section 50. The solenoid valve 79 of the solenoid installation part 40 is communicated. That is, at least a part of the oil passages 83 and 84 of the oil passage installation unit 50 communicates the linear solenoid valve 70 of the solenoid installation unit 40 and the switching valve 66 of the valve installation unit 60.

In the above description, the convex portion 15 b formed on the fifth surface 15 and the concave portion 16 b formed on the sixth surface 16 are joined to each other in both the fifth surface 15 and the sixth surface 16. Although it has been described that the oil passages 83 and 84 are sealed and sealed, this is not limited to the convex portion 15b and the concave portion 16b. That is, similarly, the convex portions and the concave portions on the other surfaces are provided so as to surround the adjacent oil passages, whereby the oil passages can be sealed by joining the convex portions and the concave portions. In the present embodiment, the convex portion 411b and the concave portion 423b are joined and sealed around the oil passage 80, the convex portion 412b and the concave portion 434b are joined and sealed around the oil passage 81, and the convex portion 17b and the concave portion 19b are The second oil passage 82 is joined and sealed, and the convex portion 618b and the concave portion 630b are joined and the oil passage 85 is enclosed and sealed.

Next, the orifice plug (orifice portion) 100 provided in the oil passage formed in the valve body of the hydraulic control device 4 of the automatic transmission 3 will be described in detail with reference to FIG. 5A. Here, as an example, the oil passage 87 formed between the sixth block 61 and the fourth block 51 with the fifth block 52 as the center will be described. The oil passage 87 is formed by communication between a first oil passage (first oil passage portion) 83, a communication oil passage 91, and a second oil passage (second oil passage portion) 82. Further, the flow direction F of the hydraulic oil in the oil passage 87 is a direction in which the hydraulic oil flows in the second oil passage 82 from the first oil passage 83 through the communication oil passage 91 as indicated by an arrow in the drawing. In this embodiment, the communication oil passage 91 is provided along the stacking direction L, and the orifice plug 100 is provided with the central axis as the stacking direction L.

The orifice plug 100 is formed separately from the body portion 4 a and is housed and provided inside the oil passage 87. That is, the orifice plug 100 is provided in a single oil passage 87 without straddling a plurality of oil passages. For this reason, since the orifice plug 100 does not straddle the adjacent oil passage, oil does not leak into the adjacent oil passage. The orifice plug 100 includes a substantially cylindrical main body portion (first outer diameter portion) 101, a plate portion 102 formed on the inner peripheral portion of the main body portion 101, and a holding portion formed on the outer peripheral portion of the main body portion 101. (Second outer diameter portion) 103 and a groove portion 104 formed on the outer peripheral portion of the main body portion 101. The orifice plug 100 is made of a material having a hardness higher than that of the body portion 4a, for example, a metal. Or it is good also as a product made from resin whose hardness is higher than the body part 4a. As a result, the plate portion 102 can be made thin, and sufficient durability can be provided against cavitation that can occur around the orifice hole 102a without deteriorating the flow rate characteristics.

The plate portion 102 is provided so as to protrude from the inner peripheral surface of the main body portion 101 toward the inner peripheral side at a substantially central portion in the axial direction of the inner peripheral portion of the main body portion 101. An orifice hole 102 a having an inner diameter smaller than the oil passage diameter of the oil passage 87 is provided in the central portion of the plate portion 102. The orifice hole 102a has a size and shape as a general orifice hole. For example, when the diameter of the upstream side in the flow direction F of the plate portion 102 is D and the diameter of the orifice hole 102a is d, The relationship 0.1 ≦ d / D ≦ 0.75 is satisfied.

The holding portion 103 is formed on the upstream side in the flow direction F of the outer peripheral portion of the main body portion 101, and has a shape whose diameter is increased from the downstream side. In addition, a stepped portion 52 a that sandwiches the holding portion 103 with the fifth surface 15 is formed in the portion on the sixth surface 16 side of the fifth block 52 where the communication oil passage 91 to which the orifice plug 100 is attached is formed. Has been. The main body 101 has a first outer diameter d1 and an O-ring 105 described later. The holding portion 103 has a second outer diameter d2 that is larger than the first outer diameter d1, and forms a step with respect to the main body portion 101. As a result, the orifice plug 100 is sandwiched between the fifth block 52 and the fourth block 51 in the stacking direction L. For this reason, since it can implement | achieve prevention with a simple structure, the fixation to the body part 4a of the orifice plug 100 can be strengthened.

The groove portion 104 is formed on the downstream side in the flow direction F of the outer peripheral portion of the orifice plug 100 and has a shape in which the outer peripheral surface is recessed over the entire periphery. An O-ring (seal part) 105 made of an elastic material such as rubber is attached to the groove part 104 as a seal member. The O-ring 105 is in close contact with the wall portion (inner peripheral portion) 87 a of the oil passage 87. That is, the orifice plug 100 has an O-ring 105 in close contact with the wall portion 87a of the oil passage 87 on the outer peripheral portion, and is fixed by the wall portion 87a of the oil passage 87 in the oil passage 87. Each 87 is provided independently. The O-ring 105 is in close contact with the wall portion 87a over the entire circumference of the oil passage 87, and seals between the body portion 4a and the orifice plug 100 over the entire circumference. As a result, the hydraulic fluid that flows from the first oil passage 83 toward the communication oil passage 91 passes through the orifice hole 102a in a state where the gap between the orifice plug 100 and the wall portion 87a is sealed. It distributes to the oil passage 82.

In FIG. 5A, as an example, the oil passage 87 includes a first oil passage 83 formed by the fifth block 52 and the fourth block 51, a communication oil passage 91 formed in the fifth block 52, Although the case where the second oil passage 82 formed by the fifth block 52 and the sixth block 61 is formed has been described, the orifice plug 100 can be similarly attached to other oil passages in other blocks. it can.

In the present embodiment, the valve body of the hydraulic control device 4 of the automatic transmission 3 described above is manufactured by the DSI method. Therefore, when manufacturing the valve body of the hydraulic control device 4, the first block 41 to the eighth block 63 are formed by injection molding, and the opposing dies are relatively moved without being removed from the mold. With the die slide, a part of the layers are laminated by fitting the convex part and the concave part, and injection molding is performed by injecting a synthetic resin into the cavity, and the laminated layers are integrated. At this time, the orifice plug 100 is sandwiched and mounted between predetermined blocks (see FIG. 3). The die slide and lamination are performed on all the joint surfaces of the first block 41 to the eighth block 63 to form a valve body. In the present embodiment, the seal member that integrates the stacked blocks is an injection molding material, but the present invention is not limited to this, and may be an adhesive, for example. That is, the convex portion and the concave portion of each layer may be integrated by adhesion. In this case, the valve body can be assembled at a low cost.

Next, the operation of the hydraulic control device 4 of the automatic transmission 3 will be described with reference to FIGS. 1 to 5A.

When the oil pump is driven and hydraulic pressure is supplied after the internal combustion engine 2 is started, line pressure and modulator pressure are generated by the regulator valve and the modulator valve. The generated line pressure and modulator pressure are supplied from the oil passage 81 of the solenoid installation portion 40 through the first oil passage 83 or the small-diameter oil passage 84 of the oil passage installation portion 50 to the second oil passage of the valve installation portion 60. 82 is supplied to the linear solenoid valve 70 and the solenoid valve 79. The linear solenoid valve 70 is operated by an electric signal from the ECU 5, and generates and outputs a desired hydraulic pressure based on the line pressure and the modulator pressure. The solenoid valve 79 is operated by an electrical signal from the ECU 5 and turns on / off the supply of hydraulic pressure based on the line pressure and the modulator pressure.

A part of the hydraulic pressure supplied from the linear solenoid valve 70 or the solenoid valve 79 passes through the oil passage installation unit 50 and the valve installation unit 60 and is supplied to the automatic transmission 3. Further, another part of the hydraulic pressure supplied from the linear solenoid valve 70 and the solenoid valve 79 passes through the oil passage installation unit 50 and is supplied to the switching valve 66. At this time, in the oil passage 87, the working oil that circulates from the first oil passage 83 toward the communication oil passage 91 passes through the orifice hole 102a and circulates to the second oil passage 82 to obtain a desired flow rate. be able to. By supplying the hydraulic pressure, the position of the spool 66p of the switching valve 66 is switched, or the port portions 66a are communicated or cut off and supplied to the automatic transmission 3. When the hydraulic pressure is supplied to the automatic transmission 3, the first clutch C <b> 1 of the automatic transmission 3 and the frictional engagement elements such as the brake are disengaged to form a desired gear stage, or the automatic transmission 3 Each part is lubricated.

As described above, according to the hydraulic control device 4 of the automatic transmission 3 of the present embodiment, the orifice plug 100 is housed in the oil passage 87 and is fixed by the wall portion 87a of the oil passage 87. Is provided. For this reason, the orifice plug 100 does not straddle the adjacent oil passage, the hydraulic oil does not leak into the adjacent oil passage from the gap between the orifice plug 100 and the body portion 4a, and the body portion 4a of the valve body is made of resin. Although it is made, leakage of hydraulic oil from the orifice plug 100 can be suppressed.

Further, in the hydraulic control device 4 of the automatic transmission 3 according to the present embodiment, the orifice plug 100 has an O-ring 105 that is in close contact with the wall portion 87a of the oil passage 87 over the entire circumference. . For this reason, the hydraulic fluid that circulates from the first oil passage 83 toward the communication oil passage 91 passes through the orifice hole 102a in a state where the gap between the orifice plug 100 and the wall portion 87a is sealed. It distributes to the oil passage 82.

In the hydraulic control device 4 of the automatic transmission 3 according to the present embodiment, the case where all the layers of the first block 41 to the eighth block 63 are made of synthetic resin has been described. The layer of the part may be made of metal such as aluminum die casting.

In the hydraulic control device 4 of the automatic transmission 3 according to the present embodiment, the case where the body portion 4a is formed by the DSI method has been described. However, the present invention is not limited to this, and for example, a three-dimensional additive manufacturing method using a 3D printer. You may make it form by employ | adopting.

Further, in the hydraulic control device 4 of the automatic transmission 3 according to the present embodiment, the description has been given of the case where the concave and convex shapes are provided around the grooves on the joint surfaces of the blocks and are fitted to each other and joined by the seal member. It is not limited to. For example, the flat surfaces may be joined by injection molding, adhesion, welding, or the like without providing the uneven shape around the groove of the joint surface between the blocks.

<Second Embodiment>
Next, a second embodiment of the present invention will be described in detail with reference to FIG. 5B. In the present embodiment, the shape of the orifice plug 200 and the configuration of the seal portion are different from those in the first embodiment. However, since the other configuration is the same as that of the first embodiment, the same reference numerals are used and detailed description thereof is omitted.

In the present embodiment, the orifice plug 200 is formed separately from the body portion 4 a and is housed and provided inside the oil passage 87. The orifice plug 200 includes a substantially cylindrical main body portion 201, a plate portion 202 formed on the inner peripheral portion of the main body portion 201, and a concave recess portion facing the outer peripheral side formed on the outer peripheral portion of the main body portion 201 ( Seal portion) 204. The orifice plug 200 is made of a material having a hardness higher than that of the body portion 4a and a coefficient of thermal expansion smaller than that of the body portion 4a, for example, a metal. The formation position of the plate portion 202, the size of the orifice hole 202a, and the like are the same as those in the first embodiment.

The concave portion 204 is formed in the outer peripheral portion of the orifice plug 200 and has a shape in which the outer peripheral surface is recessed over the entire periphery. The wall 87a (see FIG. 5A) of the oil passage 87 is provided with a convex portion (fitting portion) 87b having a convex shape facing the inner peripheral side fitted in the concave portion 204 over the entire circumference. The orifice plug 200 is cast and formed integrally when the fifth block 52 is formed. The orifice plug 200 is held inside the oil passage 87 without being sandwiched between, for example, the fifth block 52 and the fourth block 51 by fitting the concave portion 204 and the convex portion 87b.

Here, when the hydraulic oil is distributed, since the hydraulic oil is at a high temperature, the orifice plug 200 and the oil passage 87 are thermally expanded. At this time, since the thermal expansion coefficient of the body portion 4a is larger than the thermal expansion coefficient of the orifice plug 200, the convex portion 87b expands inside the concave portion 204, and in particular, the first direction D1 and the second direction in the stacking direction L. Press to D2. Thereby, the sealing performance between the convex part 87b and the recessed part 204 can be improved. The hydraulic fluid that circulates from the first oil passage 83 toward the communication oil passage 91 passes through the orifice hole 202a in a state where the outer peripheral portion of the orifice plug 200 and the inner peripheral portion of the oil passage 87 are sealed. To the second oil passage 82.

Also in the hydraulic control device 4 of the automatic transmission 3 of the present embodiment, the orifice plug 200 is housed in the oil passage 87 and is fixed in a state fixed by the wall portion 87a of the oil passage 87. For this reason, the orifice plug 200 does not straddle the adjacent oil passage, the hydraulic oil does not leak into the adjacent oil passage from the gap between the orifice plug 200 and the body portion 4a, and the body portion 4a of the valve body is made of resin. While being manufactured, leakage of hydraulic oil from the orifice plug 200 can be suppressed.

Further, according to the hydraulic control device 4 of the automatic transmission 3 of the present embodiment, the thermal expansion coefficient of the body portion 4a is larger than the thermal expansion coefficient of the orifice plug 100. For this reason, the sealing performance between the convex part 87b and the recessed part 204 can be improved from the convex part 87b pressing the recessed part 204 at the time of the thermal expansion by the heat | fever of hydraulic fluid.

In the hydraulic control device 4 of the automatic transmission 3 according to the present embodiment, the fitting portion provided on the inner peripheral portion of the oil passage 87 is a convex portion 87b, and the seal portion provided on the outer peripheral portion of the orifice plug 200 is provided. Although the case where the concave portion 204 is used has been described, the present invention is not limited thereto, and the fitting portion provided on the inner peripheral portion of the oil passage 87 is a concave portion, and the seal portion provided on the outer peripheral portion of the orifice plug 200 is a convex portion. Also good. That is, the seal portion provided on the outer peripheral portion of the orifice plug 100 is one of a convex shape and a concave shape facing the outer peripheral side, and the fitting portion provided on the wall portion 87a of the oil passage 87 is on the inner peripheral side. The other of the convex shape and the concave shape facing.

<Third Embodiment>
Next, a third embodiment of the present invention will be described in detail with reference to FIG. 6A. In the present embodiment, the shape of the orifice plug 300 and the configuration of the seal portion are different from those in the first embodiment. However, since the other configuration is the same as that of the first embodiment, the same reference numerals are used and detailed description thereof is omitted.

In the present embodiment, the orifice plug 300 is formed separately from the body portion 4 a and is housed and provided inside the oil passage 87. The orifice plug 300 includes a substantially cylindrical main body 301, a plate portion 302 formed on the inner peripheral portion of the main body portion 301, and a flange-shaped holding portion 303 formed on the outer peripheral portion of the main body portion 301. is doing. The orifice plug 300 is made of a material having a hardness higher than that of the body portion 4a, for example, a metal. The plate portion 302 is provided at the upstream end of the main body portion 301 in the flow direction F, and the size and the like of the orifice hole 302a are the same as those in the first embodiment.

The holding portion 303 is formed on the upstream side in the flow direction F of the outer peripheral portion of the main body portion 301, and has a ring shape protruding in a flange shape on the outer peripheral side. A surface of the holding portion 303 facing the downstream side in the flow direction F is a second seal surface (seal portion) 303a. Further, a step is formed in the portion on the sixth surface 16 side of the fifth block 52 where the communication oil passage 91 to which the orifice plug 300 is attached is formed. In this step, the step surface facing the upstream side in the hydraulic oil flow direction F is a first seal surface 52b. Furthermore, a holding projection 15d having a shape protruding toward the first seal surface 52b is formed on the fifth surface 15 of the fourth block 51. The holding portion 303 of the orifice plug 300 is sandwiched between the first seal surface 52 b of the fifth block 52 and the holding protrusion 15 d of the fourth block 51. Accordingly, the orifice plug 300 is sandwiched between the fifth block 52 and the fourth block 51 in the stacking direction L.

The first seal surface 52b and the second seal surface 303a are tightly sealed. Here, since the first sealing surface 52b is a stepped surface, the pressure receiving area on the upstream side of the orifice plug 300 is larger than the pressure receiving area on the downstream side. For this reason, when hydraulic oil is circulated, the pressing force on the orifice plug 300 is larger from the upstream side than from the downstream side, and therefore the pressing force from the second seal surface 303a to the first seal surface 52b is reduced. The sealing performance can be improved as a differential pressure seal. The hydraulic fluid that circulates from the first oil passage 83 toward the communication oil passage 91 passes through the orifice hole 302a in a state where the outer peripheral portion of the orifice plug 300 and the inner peripheral portion of the oil passage 87 are sealed. To the second oil passage 82.

Also in the hydraulic control device 4 of the automatic transmission 3 of the present embodiment, the orifice plug 300 is housed inside the oil passage 87 and is fixed in a state fixed by the wall portion 87a of the oil passage 87. For this reason, the orifice plug 300 does not straddle the adjacent oil passage, the hydraulic oil does not leak into the adjacent oil passage from the gap between the orifice plug 300 and the body portion 4a, and the body portion 4a of the valve body is made of resin. While being manufactured, the leakage of hydraulic oil from the orifice plug 300 can be suppressed.

Further, according to the hydraulic control device 4 of the automatic transmission 3 of the present embodiment, the first seal surface 52b is a stepped surface facing the upstream side in the flow direction F, so the pressure receiving area on the upstream side of the orifice plug 300 Is larger than the downstream pressure receiving area. For this reason, at the time of distribution | circulation of hydraulic fluid, the pressing force from the 2nd seal surface 303a to the 1st seal surface 52b can be raised, and a sealing performance can be improved as a differential pressure seal.

<Fourth Embodiment>
Next, a fourth embodiment of the present invention will be described in detail with reference to FIGS. 6B and 6C. In the present embodiment, the mounting direction of the orifice plug 100 is different from that of the first embodiment. However, since the other configuration is the same as that of the first embodiment, the same reference numerals are used and detailed description thereof is omitted. That is, the configuration of the orifice plug 100 itself of this embodiment is the same as that of the orifice plug 100 described in the first embodiment. In the present embodiment, the oil passage 87 will be described as an example of the oil passage 87 formed between the fifth block 52 and the fourth block 51.

In this embodiment, the oil passage 87 is provided along a horizontal direction orthogonal to the stacking direction L, for example, the width direction W, and the orifice plug 100 is provided with the central axis as the width direction W. In the portion of the oil passage 87 where the orifice plug 100 is mounted, the first groove 16a of the sixth surface (first surface) 16 of the fifth block 52 and the fifth surface (second surface) of the fourth block 51 are provided. ) 15 third grooves (second grooves) 15a are formed with recesses 52c and 51c over the entire circumference. When the holding portion 103 of the orifice plug 100 is fitted into the recesses 52c and 51c, the orifice plug 100 is sandwiched between the fifth block 52 and the fourth block 51 in the stacking direction L.

The O-ring 105 attached to the groove 104 of the orifice plug 100 is in close contact with the wall 87a of the oil passage 87. The O-ring 105 is in close contact with the wall portion 87a over the entire circumference of the oil passage 87, and seals between the body portion 4a and the orifice plug 100 over the entire circumference. As a result, the hydraulic fluid flowing through the oil passage 87 passes through the orifice hole 102a in a state where the gap between the orifice plug 100 and the wall portion 87a is sealed.

Also in the hydraulic control device 4 of the automatic transmission 3 of the present embodiment, the orifice plug 100 is housed inside the oil passage 87 and is provided in a state of being fixed by the wall portion 87a of the oil passage 87. For this reason, the orifice plug 100 does not straddle the adjacent oil passage, the hydraulic oil does not leak into the adjacent oil passage from the gap between the orifice plug 100 and the body portion 4a, and the body portion 4a of the valve body is made of resin. Although it is made, leakage of hydraulic oil from the orifice plug 100 can be suppressed.

Further, according to the hydraulic control device 4 of the automatic transmission 3 of the present embodiment, the orifice plug 100 can be provided in the oil passage 87 formed between the two blocks, so that the degree of freedom in design can be increased. it can.

The first to fourth embodiments include at least the following configuration. The hydraulic control device (4) of the vehicle transmission device (3) of the present embodiment includes a resin body portion (4a) having an oil passage (87), and a separate body from the body portion (4a). An orifice hole (102a, 202a, 302a) having an inner diameter smaller than the oil passage diameter of the oil passage (87) is accommodated in the oil passage (87), and the inner peripheral portion (87a) of the oil passage (87). ) And orifice portions (100, 200, 300) provided in a fixed state. According to this configuration, the orifice portion (100, 200, 300) is housed inside the oil passage (87) and is provided in a state of being fixed by the inner peripheral portion (87a) of the oil passage (87). ing. For this reason, hydraulic oil does not leak into the adjacent oil passage from the gap between the orifice (100, 200, 300) and the body (4a), and the body (4a) of the valve body is made of resin. , Leakage of hydraulic oil from the orifice (100, 200, 300) can be suppressed.

Further, in the hydraulic control device (4) of the vehicle transmission device (3) of the first to fourth embodiments, the orifice portion (100, 200, 300) is disposed on the outer peripheral portion of the oil passage (87). The seal portion (105, 204, 303a) is in close contact with the circumference portion (87a) over the entire circumference. According to this configuration, the hydraulic oil flowing through the oil passage (87) is in a state where the gap between the orifice portion (100, 200, 300) and the inner peripheral portion (87a) is sealed, and the orifice holes (102a, 202a). , 302a), the flow characteristics can be prevented from deteriorating.

In the hydraulic control device (4) of the vehicle transmission device (3) according to the first to fourth embodiments, the body portion (4a) includes the first surface (16) and the first surface ( 16) formed in the first groove (16a), the second surface (19) provided on the opposite side of the first surface (16), and the second surface (19). A first layer (52, 62) having a second groove (19a) and a communication oil passage (91) communicating the first groove (16a) and the second groove (19a); A third surface (15) facing the first surface (16), and a third groove (15a) formed on the third surface (15) and facing the first groove (16a) A second layer (51) laminated to the first layer (52, 62) by bonding the third surface (15) to the first surface (16), The second A fourth surface (17) facing (19), and a fourth groove (17a) formed on the fourth surface (17) and facing the second groove (19a). The third surface (19) is joined to the fourth surface (17) and laminated on the opposite side of the second layer (51) with respect to the first layer (52, 62). A first oil passage portion (83) formed by the first groove (16a) and the third groove (15a), and a layer (61). The orifice portion (100) is formed by the communication oil passage (91) and a second oil passage portion (82) formed by the second groove (19a) and the fourth groove (17a). , 200, 300) is provided in the oil passage (87) and is sandwiched between the first layer (52, 62) and the second layer (51). According to this configuration, in the oil passage (87) formed between the layers of the valve body having the three-layer structure, the working oil is adjacent to the oil from the gap between the orifice portion (100, 200, 300) and the body portion (4a). Leakage to the road can be suppressed.

In the hydraulic control device (4) of the vehicle transmission device (3) according to the first to fourth embodiments, the orifice portion (100, 200, 300) has a hardness higher than that of the body portion (4a). Made of material. According to this configuration, the plate portion forming the orifice hole (102a, 202a, 302a) can be made thin, and can be generated around the orifice hole (102a, 202a, 302a) without deteriorating the flow rate characteristic. It can have sufficient durability against cavitation.

In the hydraulic control device (4) of the vehicle transmission device (3) of the first and fourth embodiments, the seal portion (105) is an O-ring. According to this configuration, sufficient sealing performance can be obtained while using inexpensive parts.

Further, in the hydraulic control device (4) of the vehicle transmission device (3) of the first and fourth embodiments, the orifice portion (100) is disposed on the outer peripheral portion and on the inner peripheral portion of the oil passage (87). The first outer diameter portion (101) having the seal portion (105) in close contact with the entire circumference, the first outer diameter (d1) and provided with the seal portion (105), and the first A second outer diameter portion (103) having a second outer diameter (d2) larger than the outer diameter (d1) of the first outer diameter portion (101) and forming a step with respect to the first outer diameter portion (101). The second outer diameter portion (103) is sandwiched between the first layer (52, 62) and the second layer (51). According to this configuration, the stopper can be realized with a simple configuration, so that the orifice (100) can be firmly fixed.

In the hydraulic control device (4) of the vehicle transmission device (3) of the second embodiment, the seal portion (204) is one of a convex shape and a concave shape facing the outer peripheral side, and the oil passage The inner peripheral portion (87a) of (87) has a fitting portion (87b) which is the other of the convex shape and the concave shape facing the inner peripheral side fitted to the seal portion (204). According to this configuration, sufficient sealing performance can be obtained by fitting the concavo-convex portions without using sealing parts.

In the hydraulic control device (4) of the vehicle transmission device (3) of the second embodiment, the fitting portion (87b) has a convex shape, and the seal portion (204) has a concave shape. And it consists of a material whose coefficient of thermal expansion is smaller than the said fitting part (87b). According to this configuration, the convex fitting portion (87b) expands more than the concave seal portion (204) due to the heat of the circulating hydraulic oil, and the convex fitting portion (87b) has a concave shape. Since it adheres inside a seal part (204), a sealing performance can be improved.

Further, in the hydraulic control device (4) of the vehicle transmission device (3) of the third embodiment, the inner peripheral portion (87a) of the oil passage (87) is a step that faces the upstream side in the hydraulic oil flow direction. A first seal surface (52b) that is a surface, and the seal portion (303a) faces a downstream side in the flow direction and is in close contact with the first seal surface (52b) ( 303a). According to this configuration, since the pressure receiving area on the upstream side of the orifice part (300) is larger than the pressure receiving area on the downstream side, the second sealing surface (303a) to the first sealing surface (52b) when hydraulic fluid flows. ) Can be increased, and the sealing performance can be improved as a differential pressure seal.

In the hydraulic control device (4) of the vehicle transmission device (3) of the fourth embodiment, the body part (4a) is formed on the first surface (16) and the first surface (16). A first layer (52, 62) having a first groove (16a), a second surface (15) facing the first surface (16), and a second surface (15). A second groove (15a) that is formed and faces the first groove (16a), and the second surface (15) is joined to the first surface (16) to form the first layer. A second layer (51) laminated on (52, 62), and the oil passage (87) is formed by the first groove (16a) and the second groove (15a), The orifice part (100) is provided in the oil passage (87) and is sandwiched between the first layer (52, 62) and the second layer (51). According to this configuration, in the oil passage (87) formed between the layers of the valve body having the two-layer structure, the hydraulic oil leaks into the adjacent oil passage from the gap between the orifice portion (100) and the body portion (4a). This can be suppressed.

The hydraulic control device for the vehicle transmission device relates to, for example, a hydraulic control device suitable for a vehicle transmission device mounted on a vehicle, and more specifically, is suitable for use in a hydraulic control device having an orifice portion.

3 Automatic transmission (vehicle transmission)
4 Hydraulic control device 4a Body part 15 5th surface (3rd surface, 2nd surface)
15a Third groove (second groove)
16 6th surface (1st surface)
16a 1st groove | channel 17 7th surface (4th surface)
17a Fourth groove 19 Ninth surface (second surface)
19a Second groove 51 Fourth block (second layer)
52 5th block (first layer)
52b First sealing surface 61 Sixth block (third layer)
62 7th block (1st layer)
82 Second oil passage (second oil passage portion)
83 1st oil path (1st oil path part)
87 Oil passage 87a Wall (inner circumference)
87b Convex part (fitting part)
91 Communicating oil passage 100 Orifice plug (orifice part)
101 Main body (first outer diameter part)
102a Orifice hole 103 Holding part (second outer diameter part)
105 O-ring (seal part)
200 Orifice plug (orifice part)
202a Orifice hole 204 Recessed part (seal part)
300 Orifice plug (orifice part)
302a Orifice hole 303a Second seal surface (seal part)
F Distribution direction L Stacking direction

Claims (10)

A resin body having an oil passage;
It is formed separately from the body part, has an orifice hole with an inner diameter smaller than the oil passage diameter of the oil passage, is housed inside the oil passage and is fixed in the inner peripheral portion of the oil passage. And a hydraulic control device for a vehicle transmission device. 2. The hydraulic control device for a vehicle transmission device according to claim 1, wherein the orifice portion includes a seal portion that is in close contact with an inner peripheral portion of the oil passage on an outer peripheral portion. The hydraulic control device for a vehicle transmission device according to claim 2, wherein the seal portion is an O-ring. The seal part is one of a convex shape and a concave shape facing the outer peripheral side,
3. The hydraulic control of the vehicle transmission device according to claim 2, wherein an inner peripheral portion of the oil passage has a fitting portion which is the other of the convex shape and the concave shape facing the inner peripheral side fitted to the seal portion. apparatus. The fitting portion is convex.
5. The hydraulic control device for a vehicle transmission device according to claim 4, wherein the seal portion has a concave shape and is made of a material having a smaller coefficient of thermal expansion than the fitting portion. The inner peripheral portion of the oil passage has a first seal surface that is a step surface facing the upstream side in the flow direction of hydraulic oil,
The hydraulic control device for a vehicle transmission device according to claim 2, wherein the seal portion has a second seal surface that faces the downstream side in the flow direction and is in close contact with the first seal surface. The body portion includes a first layer having a first surface and a first groove formed in the first surface, a second surface facing the first surface, and a second surface. A second groove formed and opposed to the first groove, the second surface being bonded to the first surface, and a second layer laminated on the first layer. ,
The oil passage is formed by the first groove and the second groove,
The hydraulic control device for a vehicle transmission device according to any one of claims 1 to 6, wherein the orifice portion is provided in the oil passage and is sandwiched between the first layer and the second layer. The orifice portion has a seal portion that is in close contact with the inner peripheral portion of the oil passage on the outer peripheral portion, and a first outer diameter portion that has a first outer diameter and is provided with the seal portion. And a second outer diameter portion having a second outer diameter larger than the first outer diameter and forming a step with respect to the first outer diameter portion,
The hydraulic control device for a vehicle transmission device according to claim 7, wherein the second outer diameter portion is sandwiched between the first layer and the second layer. The body part is
A first surface; a first groove formed on the first surface; a second surface provided on the opposite side of the first surface; and a second surface formed on the second surface. A first layer having a groove and a communication oil passage communicating the first groove and the second groove;
A third surface facing the first surface; and a third groove formed on the third surface and facing the first groove; and the third surface is formed on the first surface. A second layer laminated on the first layer by bonding the surfaces of
A fourth surface facing the second surface; and a fourth groove formed on the fourth surface and facing the second groove; and the fourth surface on the second surface. And a third layer laminated on the opposite side of the second layer with respect to the first layer,
The oil passage is formed by the first oil passage portion formed by the first groove and the third groove, the communication oil passage, the second groove, and the fourth groove. Two oil passage portions, and
The hydraulic control device for a vehicle transmission device according to any one of claims 1 to 6, wherein the orifice portion is provided in the oil passage and is sandwiched between the first layer and the second layer. The hydraulic control device for a vehicle transmission device according to any one of claims 1 to 9, wherein the orifice portion is made of a material having a hardness higher than that of the body portion.

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