CN116181472A

CN116181472A - Valve device

Info

Publication number: CN116181472A
Application number: CN202310173115.XA
Authority: CN
Inventors: 佐藤真吾
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 2016-09-27
Filing date: 2017-09-20
Publication date: 2023-05-30
Also published as: WO2018061892A1; CN112664679A; CN112664679B

Abstract

The valve devices (1, 2, 3) are provided with: a valve housing (10, 15, 16, 17, 18) having an internal space (100) and a plurality of housing-side openings (101, 1601, 1701, 1801) that communicate the internal space with the outside; a valve member (20, 70) rotatably accommodated in the valve housing, the valve member having a plurality of valve member side openings (230, 222, 232, 233, 720, 721, 722, 723) that can communicate with the plurality of housing side openings, and a communication path (200, 700) that communicates the plurality of valve member side openings; a restriction unit (19, 394, 494) capable of restricting rotation of the valve member; abutment portions (24, 34, 44, 54, 64) provided in spaces (200, 210) provided in the valve member, and capable of abutting against the restricting portions; and a shaft (25) rotatably supporting the valve member.

Description

Valve device

The present application is a divisional application of the original application of the name of the valve device, with the application number 201780058932.3, and the application date being 2017, 9, 20.

Cross-reference to related applications

The present application is based on Japanese patent application No. 2016-187965 filed in 2016, 9 and 27, and Japanese patent application No. 2017-166230 filed in 2017, 8 and 30, the contents of which are incorporated herein by reference.

Technical Field

The present disclosure relates to a valve device.

Background

Conventionally, the following valve devices are known: the device is provided with: a valve member having two or more openings and a communication path for communicating the two or more openings; and a valve housing rotatably housing the valve member, the valve housing having two or more communication holes capable of communicating with two or more openings provided in the valve member, the valve device being capable of controlling the flow of fluid in accordance with the rotation angle of the valve member relative to the valve housing. For example, patent document 1 describes a valve device including: a valve housing having a bottom cylindrical shape, which has a plurality of housing side openings on the radial outer side when viewed from one end along the direction of the rotation axis and the rotation axis; and a valve member formed in a bottomed tubular shape rotatably accommodated in the valve housing, the outer wall in the radial outer direction having a valve member side opening communicable with the housing side opening.

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 2015-59615

Disclosure of Invention

In the valve device described in patent document 1, the valve member has an abutment portion that can abut against a restriction portion provided in the valve housing. When the abutting portion abuts against the restricting portion, rotation of the valve member is restricted. However, in the valve device described in patent document 1, the abutment portion is formed so as to protrude from the valve member in a direction along the rotation axis of the valve member, and therefore the outer shape in the axial direction of the valve device becomes large.

The present disclosure has been made in view of the above-described points, and an object thereof is to provide a valve device capable of reducing the outer shape and making the rotation angle of a valve member within a desired angle range.

The present disclosure relates to a valve device including a valve housing, a valve member, a restricting portion, an abutting portion, and a shaft.

The valve housing has an inner space and a plurality of housing-side openings that communicate the inner space with the outside.

The valve member is rotatably accommodated in the valve housing, and has a plurality of valve member side openings that can communicate with the plurality of housing side openings, and a communication path that communicates the plurality of valve member side openings.

The restriction portion is capable of restricting rotation of the valve member.

The abutting portion is provided in a space of the valve member and can abut against the restricting portion.

The shaft rotatably supports the valve member.

In the valve device of the present disclosure, the abutting portion that can abut against the restricting portion that can restrict the rotation of the valve member is provided in the space that the valve member has. Thus, the abutment portion does not protrude from the valve member, and therefore the outer shape of the valve member can be reduced as compared with a case where the abutment portion is provided so as to protrude from the valve member. Thus, the outer shape can be reduced and the rotation angle of the valve member can be made within a desired angle range.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. The drawing is a drawing in which,

figure 1 is a cross-sectional view of a valve device of a first embodiment,

figure 2 is a cross-sectional view taken along line II-II of figure 1,

figure 3 is a schematic view of a cooling system to which the valve device of the first embodiment is applied,

figure 4 is a schematic view of a bearing provided in the valve device of the first embodiment,

figure 5 is a sectional view showing a state in which the valve device of the first embodiment is disassembled,

figure 6 is a partial cross-sectional view of the valve device of the first embodiment,

fig. 7 is a schematic view showing a state of engagement of a motor gear, a first intermediate gear, a second intermediate gear, and a valve gear of the valve device of the first embodiment,

figure 8 is a view from VIII of figure 1,

FIG. 9 is a perspective view of a valve member included in the valve device of the first embodiment,

FIG. 10 is a perspective view of a valve member included in the valve device of the first embodiment,

FIG. 11 is a cross-sectional view of a valve member included in the valve device according to the first embodiment,

figure 12 is a view in the XII direction of figure 1,

figure 13 is a cross-sectional view taken along line XIII-XIII of figure 11,

figure 14 is a perspective view of a valve housing provided in the valve device of the first embodiment,

Figure 15 is a cross-sectional view taken along line XV-XV of figure 2,

figure 16 is a perspective view of a valve device of the second embodiment,

figure 17 is an enlarged view of a portion of the valve device of the second embodiment,

figure 18 is a partial cross-sectional view of a valve device of a second embodiment,

figure 19 is a partial cross-sectional view of a valve device of a second embodiment,

figure 20 is a perspective view of a valve device of a third embodiment,

figure 21 is a cross-sectional view of a valve device of a third embodiment,

FIG. 22 is a perspective view of a valve member included in the valve device of the fourth embodiment,

FIG. 23 is a partial cross-sectional view of a valve member included in the valve device according to the fourth embodiment,

FIG. 24 is a perspective view of a valve member included in the valve device of the fifth embodiment,

FIG. 25 is a plan view of a valve member included in the valve device according to the fifth embodiment,

FIG. 26 is a perspective view of a valve member included in a valve device according to a sixth embodiment,

figure 27 is a partial cross-sectional view of a valve device of other embodiments,

figure 28 is a partial cross-sectional view of a valve device of other embodiments,

FIG. 29 is a cross-sectional view of a valve member included in a valve device according to another embodiment,

FIG. 30 is a cross-sectional view of a valve member included in a valve device according to another embodiment,

FIG. 31 is a perspective view of a valve member included in a valve device according to another embodiment,

fig. 32 is a cross-sectional view of a valve member included in a valve device according to another embodiment.

Detailed Description

Hereinafter, a plurality of embodiments will be described with reference to the drawings. In the embodiments, substantially the same parts are denoted by the same reference numerals, and description thereof is omitted.

(first embodiment)

The fluid control valve 1 as the "valve device" of the first embodiment is applied to a cooling system that cools an engine.

First, a cooling system 4 to which the fluid control valve 1 is applied will be described with reference to fig. 3. The fluid control valve 1 is provided in a cylinder head 501 of the engine 5. The cooling water flowing through the cylinder block 502 of the engine 5 and the cylinder head 501 flows into the fluid control valve 1. The cooling water flowing into the fluid control valve 1 is supplied to the radiator 6, the oil cooler 7, and the heat exchanger 8 for air conditioning. The cooling water supplied to the radiator 6, the oil cooler 7, and the air conditioner heat exchanger 8 is returned to the water pump 9 and pressurized, and then is reused for cooling the engine 5.

The fluid control valve 1 includes a first housing 10 serving as a "valve housing", a bearing 14, a second housing 15 serving as a "valve housing", a radiator pipe 16 serving as a "valve housing", an oil cooler pipe 17 serving as a "valve housing", an air conditioner pipe 18 serving as a "valve housing", a valve member 20, an abutting portion 24, a restricting portion 19, and a shaft 25.

The first case 10 is a member formed in a substantially bottomed tubular shape and made of resin. The first housing 10 has a valve member accommodation space 100 which is a substantially columnar "housing inner space" capable of accommodating the valve member 20.

The first housing 10 has an insertion hole 101 as "one housing side opening" communicating with the valve member accommodation space 100. The inner diameter of the insertion hole 101 is sized to allow the valve member 20 to be inserted into the valve member accommodation space 100. The insertion hole 101 serves as an inlet port for cooling water when flowing from the engine 5 into the valve member housing space 100. A groove 102 is formed in an edge portion of the first housing 10 in which the insertion hole 101 is formed, and the groove 102 is provided with an O-ring 110 capable of maintaining the fluid-tightness between the fluid control valve 1 and the cylinder head 501 when the fluid control valve 1 is assembled to the cylinder head 501.

The first housing 10 has three

insertion holes

11, 12, 13 in the radial direction of the valve member accommodation space 100.

The insertion hole 11 is formed at a position closest to a housing bottom 104 provided on the opposite side of the valve member housing space 100 from the insertion hole 101 among the three

insertion holes

11, 12, 13. The insertion hole 11 can be inserted with a radiator pipe 16.

The insertion holes 12, 13 are formed between the insertion hole 11 and the insertion hole 101. The insertion hole 12 and the insertion hole 13 are provided at positions at an angle of about 90 degrees as viewed from the rotation axis RA25 of the shaft 25 (see fig. 1 and 2 for comparison). The insertion hole 12 can be inserted into the oil cooler pipe 17. The insertion hole 13 can be inserted with an air conditioning pipe 18.

The case bottom 104 has a through hole 105 in a substantially center. The other end 252 of the shaft 25 is inserted into the through hole 105. A bearing 106 is provided on the inner wall of the through hole 105. The bearing 106 rotatably supports the other end 252 of the shaft 25.

A sealing member 107 is provided between the bearing portion 106 and the valve member accommodation space 100 on the inner wall of the through hole 105, and the sealing member 107 can maintain the liquid-tightness between the through hole 105 on the side where the bearing portion 106 is provided and the valve member accommodation space 100.

The case bottom 104 has a drain passage 108 (see fig. 2) communicating with the through hole 105 between the bearing 106 and the sealing member 107. The drain passage 108 communicates the through hole 105 with the outside of the fluid control valve 1. The drain passage 108 can drain the cooling water that has entered the through hole 105 on the side where the bearing portion 106 is provided through the sealing member 107 to the outside.

The bearing 14 is provided in the insertion hole 101. The bearing 14 includes a central portion 141, an annular portion 142, a plurality of coupling portions 143, and a bearing portion 140.

The center portion 141 is located radially outward of one end 251 of the shaft 25. The central portion 141 is a substantially cylindrical portion formed to extend along the rotation axis RA25 of the shaft 25. The center portion 141 is provided with a bearing portion 140 that rotatably supports one end 251 of the shaft 25 at an end portion located on the space 200 side when the bearing 14 is assembled to the first housing 10.

The annular portion 142 is a substantially annular portion provided in the radial outer direction of the central portion 141, and is provided in a portion of the first housing 10 where the insertion hole 101 is formed. In the fluid control valve 1, the annular portion 142 is provided in the radially outer direction of the end portion of the central portion 141 located on the opposite side from the space 200 when the bearing 14 is assembled to the first housing 10. That is, the annular portion 142 and the bearing portion 140 are offset along the rotation axis RA25 as shown in fig. 1 and 2.

The plurality of connecting portions 143 connect the central portion 141 and the annular portion 142. The coupling portion 143 is formed radially outward from the central portion 141 toward the annular portion 142. As shown in fig. 1, 2, and 5, the end of the connecting portion 143 connected to the central portion 141 is formed to have substantially the same length as the central portion 141, and is formed to have a length shorter along the direction of the rotation axis RA25 as it is separated from the rotation axis RA 25. As shown in fig. 4, the plurality of coupling portions 143 are arranged such that the intervals between adjacent coupling portions 143 are equal to each other by the angle α when the bearing 14 is viewed from the direction along the rotation axis RA25 of the shaft 25. A gap through which cooling water can flow is formed between adjacent connection portions 143.

In the fluid control valve 1, as shown in fig. 5, an end portion of the annular portion 142 on the side inserted into the insertion hole 101 has an inclined surface 144 formed obliquely with respect to the rotation axis RA25 of the shaft 25. As shown in fig. 5, the inclined surface 144 is inclined so as to be away from the rotation axis RA25 as going from the space 200 side to the outside in a direction substantially parallel to the rotation axis RA 25.

The end of the first housing 10 that abuts against the inclined surface 144 when the bearing 14 is assembled to the first housing 10 has an abutment surface 103. As shown in fig. 5, the contact surface 103 is formed to be away from the rotation axis RA25 as going from the space 200 side to the outside in a direction substantially parallel to the rotation axis RA25.

The second housing 15 is provided on the opposite side of the first housing 10 from the side where the insertion hole 101 is formed. The second housing 15 has a connector 151. The second housing 15 forms a housing chamber 150 capable of housing the rotation angle sensor 152, the motor gear 153, the first intermediate gear 154, the second intermediate gear 155, the valve gear 156, and the like with the first housing 10. Fig. 6 is a sectional view of the vicinity of the housing chamber 150 with the second housing 15 removed.

The rotation angle sensor 152 is provided near the other end 252 of the shaft 25. The rotation angle sensor 152 can output a signal corresponding to the rotation angle of the shaft 25.

The motor gear 153 is provided in a motor 157 (see fig. 7) included in the fluid control valve 1. The motor gear 153 rotates by a driving force output from the motor 157.

The first intermediate gear 154 couples the motor gear 153 with the second intermediate gear 155. The first intermediate gear 154 has a first large gear 1541, a first small gear 1542, and a first gear shaft 1543. The first large gear 1541 meshes with the motor gear 153. As shown in fig. 6, the first pinion 1542 is located on the first housing 10 side of the first large gear 1541, and meshes with the second intermediate gear 155. The first gear shaft 1543 connects the first large gear 1541 and the first small gear 1542 so that the first large gear 1541 and the first small gear 1542 can integrally rotate. As shown in fig. 6, a plurality of grooves 1544 are formed in the outer direction at the portion of the first gear shaft 1543 fitted into the second housing 15.

The second intermediate gear 155 couples the first intermediate gear 154 with the valve gear 156. The second intermediate gear 155 has a second large gear 1551, a second small gear 1552, and a second gear shaft 1553. The second large gear 1551 meshes with the first small gear 1542. As shown in fig. 6, the second pinion 1552 is positioned on the opposite side of the second large gear 1551 from the first housing 10 and meshes with the valve gear 156. The second gear shaft 1553 connects the second large gear 1551 with the second small gear 1552 so that the second large gear 1551 and the second small gear 1552 can integrally rotate. At a portion of the second gear shaft 1553 fitted into the second housing 15, as shown in fig. 6, a plurality of grooves 1554 are formed in the radial outer direction.

The valve gear 156 couples the second intermediate gear 155 with the shaft 25. Specifically, the valve gear 156 is fixed to the other end 252 of the shaft 25, and is rotatable integrally with the shaft 25.

When the motor 157 outputs a driving force, the driving force is transmitted to the shaft 25 via the motor gear 153, the first intermediate gear 154, the second intermediate gear 155, and the valve gear 156. By the transmitted driving force, the shaft 25 and the valve member 20 integrally rotated with the shaft 25 are rotated.

In the fluid control valve 1, the motor gear 153, the first intermediate gear 154, the second intermediate gear 155, and the valve gear 156 are arranged so as to be a position where the first pinion 1542 of the first intermediate gear 154 meshes with the second large gear 1551 of the second intermediate gear 155 (a position indicated by a single-dot chain line C15 in fig. 6), a position where the valve gear 156 meshes with the second pinion 1552 of the second intermediate gear 155 (a position indicated by a single-dot chain line B15 in fig. 6), and a position where the motor gear 153 meshes with the first large gear 1541 of the first intermediate gear 154 (a position indicated by a single-dot chain line a15 in fig. 6) in this order as viewed from the first housing 10 side.

As shown in fig. 7, the first large gear 1541 of the first intermediate gear 154 is formed so as to overlap with a part of the second gear shaft 1553 of the second intermediate gear 155. That is, as shown in fig. 6, when the rotation axis of the second gear shaft 1553 extends in a direction substantially parallel to the rotation axis RA25 of the shaft 25 and in a direction from the second large gear 1551 toward the second small gear 1552, the rotation axis overlaps the first large gear 1541.

The driving force output by the motor 157 is transmitted to the shaft 25 via the motor gear 153, the first intermediate gear 154, the second intermediate gear 155, and the valve gear 156.

The connector 151 has a terminal 158 electrically connected to the rotation angle sensor 152 and the motor 157. The terminal 158 is electrically connected to a control unit, not shown, via an external connector, not shown. The connector 151 can output a signal output from the rotation angle sensor 152 to the control unit and receive electric power supplied to the motor from the outside.

The shaft 25 is formed of metal and has a substantially rod-shaped end 251, an end 252, and an insertion portion 253.

One end 251 is inserted into the bearing 14 and rotatably supported by the bearing portion 140.

The other end 252 is inserted into the housing bottom 104 and rotatably supported by the bearing 106.

The fitting portion 253 is provided between the one end portion 251 and the other end portion 252, and is fitted into the valve member 20 as shown in fig. 1, 2, and 11. The cross-sectional shape of the fitting portion 253 substantially perpendicular to the rotation axis RA25 is formed in a polygonal shape as shown in fig. 13. Grooves 254, 255 having an outer diameter smaller than the outer diameter of the fitting portion 253 are formed on one end 251 side and the other end 252 side of the fitting portion 253.

The radiator pipe 16 includes a radiator tube 161, a sheet 162, a sleeve 163, a seal 164, a spring 165, and a plate 166.

The radiator tube 161 is formed in a substantially cylindrical shape. The radiator tube 161 is fixed to the opening 111 of the first case 10. The radiator tube 161 forms a radiator passage 160.

The sheet 162 is provided independently of the radiator tube 161, and is a substantially annular member formed of PTFE, for example. The sheet 162 has an opening 1601 which is one of the "other case side openings". The sheet 162 is provided so as to be able to abut against the outer wall of the valve member 20.

The sleeve 163 is a substantially cylindrical member provided between the radiator tube 161 and the sheet 162. The end of the sleeve 163 on the radiator tube 161 side is inserted into the radiator passage 160. The sleeve 163 is formed to have an end opposite to the side inserted into the heat sink passage 160 and has an increased inner diameter, and supports the sheet 162.

The seal 164 is provided radially outward of the sleeve 163 inserted into the radiator passage 160. The seal 164 maintains the heat sink passageway 160 and the insertion hole 11 in a fluid-tight state.

The spring 165 is provided between the end surface of the radiator tube 161 on the valve member 20 side and the end surface of the sleeve 163 on the radiator tube 161 side where the sheet 162 is supported. The spring 165 biases the sheet 162 in a direction in which the radiator tube 161 is separated from the sheet 162. Thereby, the sheet 162 is pressed against the outer wall of the valve member 20, and the liquid tightness between the inside of the valve member 20 and the inside of the sleeve 163 and the insertion hole 11 is maintained.

The plate 166 is provided in the radial direction of the spring 165. The plate 166 is formed in an L-shape in cross section, and the plate 166 is in contact with both the end surface of the substantially orthogonal radiator tube 161 on the valve member 20 side and the outer wall surface of the sleeve 163 on the radial outer side.

The oil cooler piping 17 includes an oil cooler pipe 171, a sheet 172, a sleeve 173, a seal 174, a spring 175, and a plate 176.

The oil cooler tube 171 is formed in a substantially cylindrical shape. The oil cooler tube 171 is fixed to the opening 121 of the first casing 10. The oil cooler tube 171 forms an oil cooler passage 170.

The sheet 172 is provided independently of the oil cooler tube 171, and is a substantially annular member formed of PTFE, for example. The sheet 172 has an opening 1701 which is one of the "other case side openings". The sheet 172 is provided so as to be able to abut against the outer wall of the valve member 20.

The sleeve 173 is a substantially cylindrical member provided between the oil cooler tube 171 and the sheet 172. The end of the sleeve 173 on the oil cooler tube 171 side is inserted into the oil cooler passage 170. The sleeve 173 is formed to have an end portion on the opposite side to the side inserted into the oil cooler passage 170 with an increased inner diameter, and supports the sheet 172.

The seal 174 is provided radially outward of the sleeve 173 inserted into the oil cooler passage 170. The seal 174 maintains the oil cooler passage 170 and the insertion hole 12 in a fluid-tight state.

The spring 175 is provided between the end surface of the oil cooler tube 171 on the valve member 20 side and the end surface of the sleeve 173 on the oil cooler tube 171 side at the portion where the sheet 172 is supported. The spring 175 biases the sheet 172 in a direction in which the oil cooler tube 171 is separated from the sheet 172. Thereby, the sheet 172 is pressed against the outer wall of the valve member 20, and the liquid tightness between the inside of the valve member 20 and the inside of the sleeve 173 and the insertion hole 12 is maintained.

The plate 176 is provided in the radial direction of the spring 175. The plate 176 is formed in an L-shape in cross section, and the plate 176 is in contact with both the valve member 20 side end surface of the substantially orthogonal oil cooler tube 171 and the radially outer wall surface of the sleeve 173.

The air conditioning pipe 18 includes an air conditioning pipe 181, a sheet 182, a sleeve 183, a seal 184, a spring 185, and a plate 186.

The air conditioner pipe 181 is formed in a substantially cylindrical shape. The air conditioner pipe 181 is fixed to the opening 131 of the first casing 10. The air conditioning pipe 181 forms an air conditioning passage 180.

The sheet 182 is provided independently of the air conditioning pipe 181, and is a substantially annular member made of PTFE, for example. The sheet 182 has an opening 1801 as one of the "other case side openings". The sheet 182 is provided so as to be able to abut against the outer wall of the valve member 20.

The sleeve 183 is a substantially cylindrical member provided between the air conditioner pipe 181 and the sheet 182. An end 1831 of the sleeve 183 on the air conditioning pipe 181 side is inserted into the air conditioning passage 180. An end 1832 of the sleeve 183 opposite to the end 1831 is formed to have an inner diameter larger than the end 1831, and supports the sheet 182.

The seal 184 is provided radially outside the sleeve 183 inserted into the air conditioning passage 180. The seal 184 maintains the air conditioning passage 180 and the insertion hole 13 liquid-tight.

The spring 185 is provided between the end surface 1811 of the air conditioning pipe 181 on the valve member 20 side and the end surface 1833 of the end 1832 of the sleeve 183 on the air conditioning pipe 181 side. The spring 185 biases the sheet 182 in a direction in which the air conditioning duct 181 is separated from the sheet 182. Thereby, the sheet 182 is pressed against the outer wall of the valve member 20, and the liquid tightness between the inside of the valve member 20 and the inside of the sleeve 183 and the insertion hole 13 is maintained.

The plate 186 is provided in the radial direction of the spring 185. As shown in fig. 8, the plate 186 is formed in an L-shape in cross section. The plate 186 is abutted against both the end surface 1811 of the substantially orthogonal air conditioning pipe 181 and the radially outer wall surface 1834 of the sleeve 183.

Further, although the structure of the air conditioner pipe 18 is described in detail with reference to the drawings, the radiator pipe 16 and the oil cooler pipe 17 have the same structure.

The valve member 20 is formed of resin in a substantially bottomed tubular shape and is accommodated in the valve member accommodating space 100. The rotation axis RA25 of the shaft 25 is located on the central axis of the valve member 20. The valve member 20 has a valve member bottom 21, a first cylindrical portion 22 that is "an outer wall on the radial outside of the valve member", and a second cylindrical portion 23 that is "an outer wall on the radial outside of the valve member". The valve member 20 has a space 200 formed by a valve member bottom 21, a first cylindrical portion 22, and a second cylindrical portion 23, as a "communication path" inside.

The valve member bottom 21 is provided in the valve member accommodation space 100 at a position facing the case bottom 104, and has a through hole 211 in which the shaft 25 can be inserted in the substantial center. When the shaft 25 is inserted into the through hole 211, the valve member 20 and the shaft 25 cannot move relative to each other and can rotate integrally. As shown in fig. 10, the valve member bottom 21 has a plurality of ribs 212 on the surface on the space 200 side. The ribs 212 are formed to extend radially outward when viewed from the rotation axis RA 25.

The valve member bottom 21 is formed on a side facing the case bottom 104 so as to be distant from the case bottom 104 as going from an edge portion on the radially outer side where the first tube portion 22 is provided toward the through hole 211. As a result, the valve member bottom 21 has a recess 210, which is a "space possessed by the valve member", recessed in a concave shape in a direction along the rotation axis RA25, as shown in fig. 11.

The first cylindrical portion 22 is formed to extend from the valve member bottom portion 21 in a direction opposite to the case bottom portion 104. A second cylindrical portion 23 is provided at an end portion of the first cylindrical portion 22 on the opposite side to the side to which the valve member bottom portion 21 is connected. As shown in fig. 1, 2, and 11, the cross-sectional shape of the outer wall surface 221 including the rotation axis RA25 is formed such that the central portion bulges in the radial outer direction than the end portion connected to the valve member bottom 21 and the end portion connected to the second tube portion 23.

The first cylinder 22 has a valve member side opening 222 as "other valve member side opening" that communicates the space 200 with the outside of the first cylinder 22. In the first embodiment, the first cylinder portion 22 has two valve member side openings 222. The valve member side opening 222 is formed so as to be communicable with the radiator passage 160 in accordance with the rotation angle of the valve member 20. That is, the sheet 162 of the radiator pipe 16 is pressed against the outer wall surface 221 forming the valve member side opening 222.

The second cylindrical portion 23 is formed to extend from an end portion of the first cylindrical portion 22 opposite to the side connected to the valve member bottom portion 21 in a direction opposite to the case bottom portion 104. The second tube portion 23 has an inflow port 230 as "one valve member side opening" on the opposite side of the first tube portion 22 in the direction along the rotation axis RA 25. The cooling water flowing from the engine 5 flows into the space 200 through the inflow port 230. As shown in fig. 1, 2, and 11, the second tube portion 23 has a cross-sectional shape including the rotation axis RA25 of the outer wall surface 231 such that the central portion bulges in the radial outer direction than the end portion connected to the first tube portion 22 and the end portion forming the inflow port 230.

The second cylinder portion 23 has valve

member side openings

232, 233 as "other valve member side openings" that communicate the space 200 with the outside of the second cylinder portion 23.

The valve member side opening 232 is formed so as to be communicable with the oil cooler passage 170 in accordance with the rotation angle of the valve member 20. That is, the sheet 172 of the oil cooler piping 17 is pressed against the outer wall surface 231 forming the valve member side opening 232.

The valve member side opening 233 is formed to be communicable with the air conditioning passage 180 so as to be rotatable in association with the valve member 20. That is, the sheet 182 of the air conditioning pipe 18 is pressed against the outer wall surface 231 forming the valve member side opening 233.

Here, fig. 12 is a cross-sectional view of a portion of the valve member 20 in the fluid control valve 1, the portion being in contact with the valve member 20, on a virtual plane including the rotation axis RA 25.

As shown in fig. 12, in the fluid control valve 1, an intersection point Cp20 of a virtual shape line SL22 along the outer wall surface 221 of the first cylinder portion 22 and a virtual shape SL23 along the outer wall surface 231 of the second cylinder portion 23 is located on a surface where the sheet 162 abuts against the valve member 20. In the fluid control valve 1, a recess 201 is provided on the second cylinder portion 23 side between the first cylinder portion 22 and the second cylinder portion 23 of the valve member 20.

The abutment 24 is provided in the recess 210 of the valve member bottom 21. In the first embodiment, the abutment portion 24 is integrally formed with the valve member 20. As shown in fig. 11, the position of the end surface 240 facing the case bottom 104 along the direction of the rotation axis RA25 of the abutting portion 24 is the same as the position of the end surface 213 facing the case bottom 104 of the valve member bottom 21 along the direction of the rotation axis RA 25. As shown in fig. 9, the abutting portion 24 has two

side walls

241 and 242 and a rib 243.

The

side walls

241 and 242 are formed to extend radially in two different radial directions when viewed from the rotation axis RA 25.

The rib 243 is provided between the

side walls

241 and 242. The ribs 243 support the

side walls

241, 242.

The abutting portion 24 is formed so as to be capable of abutting against a restricting portion 19 provided at the housing bottom 104.

As shown in fig. 14, the restriction portion 19 is formed in a substantially circular arc shape at a portion of the end surface 109 of the case bottom 104 facing the valve member bottom 21. In the first embodiment, the restricting portion 19 is integrally formed with the first housing 10. The restricting portion 19 protrudes from the end surface 109 in a direction along the rotation axis RA25, and the tip end of the protrusion is located in the recess 210 as shown in fig. 2. As shown in fig. 14, the restricting portion 19 is formed such that circumferential side surfaces 191 and 192 radially extend in the radial outer direction when viewed from the rotation axis RA 25.

Here, the positional relationship between the abutting portion 24 and the restricting portion 19 will be described with reference to fig. 15. Fig. 15 is a cross-sectional view taken along the line XV-XV in fig. 2 and is a cross-sectional view taken perpendicular to the rotation axis RA25 at a position where the abutment portion 24 engages with the restriction portion 19. In fig. 15, the direction in which the valve member 20 rotates is described as "clockwise" or "counterclockwise" for convenience.

Fig. 15 shows a state in which the side surface 244 of the side wall 241 of the abutting portion 24 abuts against the side surface 191 of the restricting portion 19. In this state, the valve member 20 is restricted from rotating clockwise.

On the other hand, when the valve member 20 rotates counterclockwise from the state shown in fig. 15, the side surface 245 of the side wall 242 of the abutting portion 24 abuts against the side surface 192 of the restricting portion 19. Thereby, the counterclockwise rotation of the valve member 20 is restricted.

That is, the valve member 20 is allowed to rotate within the angular range indicated by the two-dot chain line α1 in fig. 15 by engagement of the abutment portion 24 in the circumferential direction of the valve member 20 with the restriction portion 19.

(a) In the fluid control valve 1 of the first embodiment, the abutting portion 24 that can abut against the restricting portion 19 that restricts rotation of the valve member 20 is formed in the concave recess 210 that the valve member 20 has. Thus, the valve member 20 can have the abutting portion 24 that does not protrude from the valve member 20, and therefore the outer shape of the valve member 20 can be reduced as compared with the case where the abutting portion 24 is provided so as to protrude from the valve member 20. Thus, the rotation angle of the valve member 20 can be made within a desired angle range while reducing the outer shape of the valve member 20.

(b) In the valve member bottom 21, a recess 210 is formed so as to be separated from the case bottom 104 from the radially outer edge portion where the first tube portion 22 is provided toward the through hole 211. Thus, the recess 210 is formed so as to become shallower as going radially outward from the center of the valve member bottom 21 where the shaft 25 is located, so that the flow resistance of the cooling water flowing through the space 200 can be reduced. Thus, the flow of the cooling water in the space 200 can be smoothly guided to the valve

member side openings

222, 232, 233.

(c) Further, if the depth of the recess 210 is made shallower as it goes radially outward from the center of the valve member bottom 21 where the shaft 25 is located, the length of the abutment portion 24 near the rotation axis RA25 in the direction of the rotation axis RA25 can be made relatively longer. This can increase the contact area between the abutting portion 24 and the restricting portion 19, and therefore, breakage of the abutting portion 24 due to stress acting by engagement with the restricting portion 19 can be prevented.

(d) The valve member 20 has a plurality of ribs 212 on the surface on the space 200 side. This allows the cooling water flowing through the space 200 to be smoothly guided in the radial direction from the center of the valve member bottom 21 where the shaft 25 is located.

(e) Further, by providing the rib 212 on the surface on the space 200 side, the strength of the valve member bottom 21 can be improved. This can reliably prevent the contact portion 24 from being broken due to the stress acting upon the engagement with the restriction portion 19.

(f) In addition, the restricting portion 19 is integrally formed with the first housing 10. Thus, the restricting portion 19 can be prevented from being displaced relative to the first housing 10 by engagement with the abutting portion 24.

(g) The side surfaces 244 and 245 of the abutting portion 24 and the side surfaces 191 and 192 of the restricting portion 19 are formed radially outward when viewed from the rotation axis RA 25. Thus, the contact area can be increased when the side surface 244 contacts the side surface 191 and when the side surface 245 contacts the side surface 192. Thus, breakage of the abutting portion 24 and the restricting portion 19 due to stress acting by engagement of the abutting portion 24 and the restricting portion 19 can be reliably prevented.

(h) The abutment 24 has a rib 243 supporting the two

side walls

241, 242. Thus, the amount of resin required for forming the abutting portion 24 can be reduced as compared with the case where the abutting portion is formed in a block shape.

(i) A groove 102 in which the O-ring 110 can be provided when the fluid control valve 1 is assembled to the cylinder head 501 is formed in the edge portion of the first housing 10 in which the insertion hole 101 is formed. In addition, the first housing 10 is formed of resin, and thus, deformation of the bearing 14 due to deformation of the groove 102 can be suppressed when the bearing 14 is inserted into the insertion hole 101.

(j) The plurality of coupling portions 143 are arranged such that the intervals between adjacent coupling portions 143 are set to the same angle α when the bearing 14 is viewed from the direction along the rotation axis RA25 of the shaft 25. This makes it possible to uniformly disperse the force generated when the bearing 14 is pressed into the first housing 10, and prevent the bearing from being displaced or deformed.

(k) In the bearing 14, the annular portion 142 is formed offset from the bearing portion 140 along the rotation axis RA 25. This can prevent the force generated when the bearing 14 is pushed into the first housing 10 from directly acting on the bearing portion 140.

(l) The connecting portion 143 is formed such that an end portion connected to one side of the central portion 141 is formed to have substantially the same length as the central portion 141, and is shortened in length along the direction of the rotation axis RA25 as it is separated from the rotation axis RA 25. This converts the deformation of the bearing 14 caused by the force generated when the bearing is pressed into the first housing 10 into the relatively large deflection of the coupling portion 143, thereby reducing the force acting on the bearing portion 140.

(m) a gap through which cooling water can flow is formed between the adjacent connection portions 143. Since the rigidity of the portion where the gap is formed is relatively low, the force when the bearing 14 is pressed into the first housing 10 can be converted into the deflection of the portion where the rigidity is low, and the force acting on the bearing portion 140 can be reduced.

(n) when the bearing 14 is pressed into the first housing 10, the inclined surface 144 of the bearing 14 is brought into contact with the contact surface 103 of the first housing 10, whereby the bearing 14 can be assembled at a predetermined position of the first housing 10. This can prevent occurrence of a rotation abnormality due to the misalignment of the shaft 25 and the bearing 14.

(o) the drain passage 108 provided in the first housing 10 discharges the cooling water having entered the through hole 105 on the side where the bearing portion 106 is provided through the sealing member 107 to the outside, thereby preventing the cooling water in the valve member housing space 100 from entering the housing chamber 150. This can prevent the gears such as the rotation angle sensor 152 and the valve gear 156 stored in the storage chamber 150, and the motor 157 exposed in the storage chamber 150 from being damaged by the application of the cooling water. Further, since the leakage of the cooling water through the sealing member 107 can be detected early by discharging the water from the water discharge path 108, the failure of the sealing member 107 can be detected early.

(p) in the fluid control valve 1, the motor gear 153, the first intermediate gear 154, the second intermediate gear 155, and the valve gear 156 are disposed so as to be a position where the first pinion 1542 meshes with the second large gear 1551, a position where the valve gear 156 meshes with the second pinion 1552, and a position where the motor gear 153 meshes with the first large gear 1541, in this order, when viewed from the first housing 10 side. As a result, the second intermediate gear 155 can be disposed so that the first intermediate gear 154 and the valve gear 156 approach each other in a direction substantially perpendicular to the rotation axis RA25 of the shaft 25. Thus, the outer shape of the fluid control valve 1 in the direction substantially perpendicular to the rotation axis RA25 can be reduced.

As shown in fig. 7, the first large gear 1541 of the first intermediate gear 154 is formed so as to overlap with a part of the second gear shaft 1553 of the second intermediate gear 155. This can further reduce the outer shape of the fluid control valve 1 in the direction substantially perpendicular to the rotation axis RA25, and prevent the second intermediate gear 155 from being separated from the first housing 10 by the first intermediate gear 154.

(q) the first gear shaft 1543 of the first intermediate gear 154 and the second gear shaft 1553 of the second intermediate gear 155 are formed with a plurality of

grooves

1544, 1554 at positions to be fitted into the first casing 10. This can shorten the length of the portion to be fitted, and thus can reduce the outer shape of the fluid control valve 1 in the direction along the rotation axis RA 25.

(r) conventionally, when a shaft made of metal is fitted into a valve member made of resin, the stress of the rotational torque of the valve member and the stress of the force in the direction substantially perpendicular to the rotational axis of the shaft concentrate on the same position of the valve member where the shaft is fitted, and thus excessive stress is applied. Therefore, there is a concern that the valve member is broken.

In the fluid control valve 1, the cross-sectional shape of the fitting portion 253 of the shaft 25, which is substantially perpendicular to the rotation shaft RA25, is formed in a polygonal shape. The shaft 25 has grooves 254 and 255 having an outer diameter smaller than the outer diameter of the fitted portion 253 on both sides of the fitted portion 253. As a result, the stress due to the rotational torque of the valve member 20 acts on the fitting portion 253, while the stress when receiving the force in the direction substantially perpendicular to the rotation axis RA25 of the shaft 25 due to the

springs

165, 175, 185 included in the

pipes

16, 17, 18 acts on the grooves 254, 255 and is dispersed. Thus, breakage of the valve member 20 can be prevented.

(s) the radiator pipe 16, the oil cooler pipe 17, and the air conditioner pipe 18 have

plates

166, 176, 186 provided in the radial direction of the

springs

165, 175, 185 and abutting against the end surfaces of the

pipes

161, 171, 181 on the valve member 20 side and the outer wall surfaces of the

sleeves

163, 173, 183 on the radial outer sides. Thus, the

plates

166, 176, 186 maintain the inner diameter of the

springs

165, 175, 185 and limit the radial movement of the

springs

165, 175, 185. Thus, the sliding of the

springs

165, 175, 185 and the

sleeves

163, 173, 183 can be prevented, and the sliding of the

springs

165, 175, 185 and the first casing 10 can be prevented.

(t) the valve member 20 has a recess 201 on the second cylinder portion 23 side between the first cylinder portion 22 and the second cylinder portion 23. This prevents the sheet 162 of the radiator pipe 16 that can be in contact with the outer wall surface 221 of the first tube portion 22 from interfering with the sheet 172 of the oil cooler pipe 17 and the sheet 182 of the air conditioner pipe 18 that can be in contact with the outer wall surface 231 of the second tube portion 23, and further reduces the outer shape of the fluid control valve 1 in the direction substantially perpendicular to the rotation axis RA 25.

(second embodiment)

The valve device according to the second embodiment will be described with reference to fig. 16 to 19. In the second embodiment, the positions where the abutting portion and the restricting portion are provided are different from those of the first embodiment.

Fig. 16 to 19 show a fluid control valve 2 as a "valve device" according to a second embodiment. The fluid control valve 2 includes a first housing 10, a bearing 39, a second housing 15, a radiator pipe 16, an oil cooler pipe 17, an air conditioner pipe 18, a valve member 20, a coupling member 30, and a shaft 25.

The bearing 39 is provided in the insertion hole 101. The bearing 39 includes a central portion 141, an annular portion 142, a plurality of coupling portions 143, and a restricting portion 394.

As shown in fig. 16 and 18, the restriction portion 394 is formed to protrude from one of the plurality of coupling portions 143 in a direction along the rotation axis RA25 and in a direction of the valve member 20. As shown in fig. 19, the restriction portion 394 is located in the valve member accommodating space 100, and the end portion on the valve member 20 side is located in the space 200. The restriction portion 394 is formed to have a height that increases in the direction of the valve member 20 as going from the annular portion 142 toward the central portion 141. Fig. 18 shows a broken line L21 indicating the boundary between the connecting portion 143 and the restricting portion 394.

The connecting member 30 is provided between the edge 234 of the second tube 23, which is one end of the inflow port 230 along the direction of the rotation axis, and the shaft 25. The connecting member 30 includes a central portion 301 provided radially outward of one end portion 251 of the shaft 25, a plurality of connecting portions 302 connecting the edge portion 234 of the second tube portion 23 and the central portion 301, and an abutting portion 34. The coupling member 30 is integrally formed with the valve member 20.

The connecting portion 302 is formed radially outward from the central portion 301 toward the edge portion 234 of the second tubular portion 23. A gap through which cooling water can flow is formed between adjacent connecting portions 302. As shown in fig. 19, the coupling portion 302 is formed obliquely to the rotation axis RA 25. Specifically, the coupling portion 302 is formed so as to approach the valve member bottom 21 from the edge portion 234 of the second tube portion 23 toward the center portion 301.

The abutting portion 34 is provided on the opposite side of one of the plurality of coupling portions 302 from the valve member bottom portion 21. As shown in fig. 19, the abutting portion 34 is formed so as to shorten the length in the direction along the rotation axis RA25 as going from the central portion 301 toward the edge portion 234 of the second tube portion 23. The position of the end surface 341 on the bearing 39 side of the abutting portion 34 in the direction along the rotation axis RA25 is the same as the position of the end surface 235 on the bearing 39 side of the edge 234 of the second cylinder portion 23 in the direction along the rotation axis RA 25. Fig. 17 and 19 show a broken line L22 indicating the boundary between the connecting portion 302 and the abutting portion 34.

In the fluid control valve 2 according to the second embodiment, the restriction portion 394 is provided on the bearing 39 supporting one end 251 of the shaft 25. The abutting portion 34 that can abut against the restricting portion 394 is provided on the coupling member 30 coupled to the one end 251 of the shaft 25. The position of the end surface 341 of the abutting portion 34 in the direction of the rotation axis RA25 is the same as the position of the end surface 235 of the second cylinder portion 23 in the direction of the rotation axis RA 25. That is, the abutting portion 34 is provided in the space 200 of the valve member 20, which is "space of the valve member". Thus, the second embodiment achieves the effects (a), (d), (i) to (t) of the first embodiment.

(third embodiment)

The valve device according to the third embodiment will be described with reference to fig. 20 and 21. In the third embodiment, the positions where the abutting portion and the restricting portion are provided are different from those of the first embodiment.

Fig. 20 and 21 show a fluid control valve 3 as a "valve device" according to a third embodiment. The fluid control valve 3 includes a first housing 10, a bearing 49, a second housing 15, a radiator pipe 16, an oil cooler pipe 17, an air conditioner pipe 18, a valve member 20, an abutment portion 44, and a shaft 25.

The bearing 49 is provided in the insertion hole 101. The bearing 49 includes a central portion 141, an annular portion 142, a plurality of coupling portions 143, and a restricting portion 494.

As shown in fig. 20, the restriction portion 494 is formed to protrude from one coupling portion 143 of the plurality of coupling portions 143 in a direction along the rotation axis RA25 toward the valve member bottom 21. As shown in fig. 21, the restriction portion 494 is located in the valve member housing space 100, and the end portion on the valve member 20 side is located in the space 200. The restricting portion 494 is provided near the connection between the annular portion 142 and the connecting portion 143, that is, near the outer peripheral end of the bearing 49. Fig. 21 shows a broken line L31 indicating the boundary between the connecting portion 143 and the restricting portion 494.

As shown in fig. 20 and 21, the contact portion 44 is formed so as to protrude radially inward from the edge 234 of the second tube portion 23. The abutment 44 is integrally formed with the valve member 20. The end face 441 of the abutting portion 44 on the bearing 49 side is located at the same position along the direction of the rotation axis RA25 as the end face 235 of the second cylinder portion 23 is located at the same position along the direction of the rotation axis RA 25. Fig. 21 shows a broken line L32 indicating the boundary between the edge 234 and the contact portion 44.

In the fluid control valve 3 according to the third embodiment, the restriction portion 494 is provided to the bearing 49 supporting one end 251 of the shaft 25. The abutting portion 44 that can abut against the restricting portion 494 is formed to protrude radially inward from the edge 234 of the second tube portion 23. The position of the end surface 441 of the abutting portion 44 in the direction along the rotation axis RA25 is the same as the position of the end surface 235 of the second cylinder portion 23 in the direction along the rotation axis RA 25. That is, the abutting portion 44 is provided in the space 200 of the valve member 20, which is "space of the valve member". Thus, the third embodiment achieves the effects (a), (d), (i) to (t) of the first embodiment.

(fourth embodiment)

The valve device according to the fourth embodiment will be described with reference to fig. 22 and 23. In the fourth embodiment, the shape of the abutment portion is different from that of the first embodiment.

Fig. 22 and 23 show a valve member 20 included in a fluid control valve as a "valve device" according to the fourth embodiment. The fluid control valve of the fourth embodiment includes the first housing 10, the bearing 14, the second housing 15, the radiator pipe 16, the oil cooler pipe 17, the air conditioner pipe 18, the valve member 20, the abutting portion 54, and the shaft 25.

The abutment 54 is provided in the recess 210 of the valve member bottom 21. The abutting portion 54 is formed so as to be capable of abutting against the restricting portion 19. The side surfaces 541, 542 of the abutting portion 54 that can abut against the restriction portion 19 are formed radially outward when viewed from the rotation axis RA 25.

As shown in fig. 23, the abutment portion 54 is located on the case bottom 104 side (see a broken line L41 in fig. 23) at a position along the rotation axis RA25 of the end surface 540 on the opposite side of the space 200 from the valve member bottom 21, compared to a position along the rotation axis RA25 of the end surface 213 of the valve member bottom 21.

In the fluid control valve according to the fourth embodiment, the abutting portion 54 that abuts against the restricting portion 19 is provided in the recess 210 of the valve member bottom 21, but a part thereof protrudes from the recess 210. Thus, the fourth embodiment achieves the effects (a) to (g), (i) to (t) of the first embodiment.

Further, since the length of the abutting portion 54 in the direction along the rotation axis RA25 is longer than the abutting portion 24 of the first embodiment, the contact area of the restricting portion 19 can be enlarged. This can reliably prevent the contact portion 54 from being broken due to the stress acting by the engagement with the restriction portion 19.

(fifth embodiment)

A valve device according to a fifth embodiment will be described with reference to fig. 24 and 25. In the fifth embodiment, the position where the abutment portion is provided is different from that in the first embodiment.

Fig. 24 and 25 show a valve member 20 included in a fluid control valve as a "valve device" according to the fifth embodiment. The fluid control valve of the fifth embodiment includes a first housing 10, a bearing 14, a second housing 15, a radiator pipe 16, an oil cooler pipe 17, an air conditioner pipe 18, a valve member 20, an abutting portion 64, and a shaft 25.

The abutment 64 is provided in a recess 210 of the valve member bottom 21. The abutment 64 has two

side walls

641, 642 and a rib 643.

As shown in fig. 24 and 25, the

side walls

641 and 642 are formed to extend radially in two different radial directions when viewed from the rotation axis RA 25.

The rib 643 is provided between the side wall 641 and the side wall 642. The ribs 643 support the

side walls

641, 642.

The contact portion 64 is formed such that a side face 644 of the side wall 641 and a side face 645 of the side wall 642 can contact the restricting portion 19. The side surfaces 644 and 645 are formed radially outward when viewed from the rotation axis RA 25.

In the fluid control valve according to the fifth embodiment, the relationship between the position at which the contact portion 64 is formed and the position of the valve member side opening 222 formed at the position closest to the contact portion 64 in the direction along the rotation axis RA25 is characterized. Details thereof are described based on fig. 25.

Fig. 25 is a schematic view of the valve member 20 and the abutment portion 64 projected onto a virtual plane perpendicular to the rotation axis RA 25. As shown in fig. 25, the projection view of the abutment portion 64 on the virtual plane perpendicular to the rotation axis RA25 and the projection view of the valve member side opening 222 as the "close valve member side opening" are formed at different positions. Specifically, the projection view of the abutment portion 64 is shown as an angle range β5 (a wide-side range in the range between the solid line L51 and the solid line L52) other than the angle range α5 (a range on the narrow side in the range between the solid line L51 and the solid line L52 through the rotation axis RA 25) shown in the projection view of the valve member side opening 222.

In the fifth embodiment, the projection view of the abutment portion 64 on the virtual plane perpendicular to the rotation axis RA25 is shown as an angle range β5 other than the angle range α5 shown in the projection view of the valve member side opening 222 closest to the valve member bottom 21. Thus, even if a relatively large stress acts on the abutting portion 64 by abutting against the restricting portion 19, deformation of the abutting portion 64 can be suppressed. Therefore, in the fifth embodiment, the effects (a) to (t) of the first embodiment are exhibited, and the deformation and breakage of the valve member 20 can be reliably prevented.

(sixth embodiment)

The valve device of the sixth embodiment will be described with reference to fig. 26. In the sixth embodiment, the shape of the valve member is different from that of the first embodiment.

Fig. 26 shows a valve member 70 included in the fluid control valve as the "valve device" according to the sixth embodiment. The fluid control valve of the sixth embodiment includes the first housing 10, the bearing 14, the second housing 15, the radiator pipe 16, the oil cooler pipe 17, the air conditioner pipe 18, the valve member 70, the abutting portion 24, and the shaft 25. The valve member 70 is formed in a substantially bottomed tubular shape and is accommodated in the valve member accommodating space 100. The valve member 70 has a valve member bottom 21 and a cylindrical portion 72 that is "an outer wall on the radially outer side of the valve member". The valve member 70 has a space 700 formed by the valve member bottom 21 and the tube 72 as a "communication path" inside.

The cylindrical portion 72 is formed to extend in a direction opposite to the housing bottom 104 toward the valve member bottom 21. The tube portion 72 has valve

member side openings

721, 722, 723 as "other valve member side openings" that communicate the space 700 with the outside of the tube portion 72.

The valve member side opening 721 is formed in the vicinity of the valve member bottom 21. The valve member side opening 721 is formed so as to be communicable with the air conditioning passage 180 in accordance with the rotation angle of the valve member 70.

The valve member side opening 722 is formed at a position farther from the valve member bottom 21 than the valve member side opening 721. The valve member side opening 722 is formed so as to be capable of communicating with the oil cooler passage 170 in accordance with the rotation angle of the valve member 70.

The valve member side opening 723 is formed to overlap each of the circumferential direction of the valve member side opening 721 and the circumferential direction of the valve member side opening 722. The valve member side opening 723 is formed so as to be communicable with the radiator passage 160 in accordance with the rotation angle of the valve member 70.

The tube 72 has an inlet 720 as "one valve member side opening" on the opposite side of the valve member bottom 21 in the direction in which the shaft 25 extends.

In the sixth embodiment, the valve member 70 is formed such that the two valve

member side openings

721, 722 are arranged so as to overlap in the direction along the rotation axis RA25, and on the other hand, the valve member side opening 723 overlaps with each of the circumferential direction of the valve member side opening 721 and the circumferential direction of the valve member side opening 722. Even with this configuration, the abutting portion 24 of the recess 210 provided in the valve member bottom portion 21 can be engaged with the restricting portion 19 to thereby bring the rotatable angle of the valve member 70 into a desired angle range. Thus, the sixth embodiment achieves the effects (a) to (t) of the first embodiment.

(other embodiments)

In the above-described embodiments, the fluid control valve as the "valve device" is applied to a cooling system that cools an engine. However, the field to which the fluid control valve is applied is not limited thereto. As long as it is applied to the case where the circulation of the fluid is controlled by the rotation angle of the valve member with respect to the valve housing.

In the above-described embodiment, the valve member is formed in a bottomed tubular shape. However, the shape of the valve member is not limited thereto. The ball valve may be formed in a spherical shape.

In the above-described embodiment, the valve member bottom portion has ribs formed to radially extend in the radial outer direction when viewed from the rotation axis on the space side surface of the valve member. However, the shape of the rib is not limited thereto.

In the above-described embodiment, the "valve housing" is provided with four "housing-side openings", and the "valve member" is provided with five "valve member-side openings". However, the number of "case-side openings" and the number of "valve member-side openings" are not limited thereto.

In the above embodiment, the radiator pipe, the oil cooler pipe, and the air conditioner pipe each have a plate having an L-shaped cross-section that prevents the spring, the sleeve, and the first housing from sliding. However, the members that exert the same effects are not limited thereto. Fig. 27 and 28 show modifications of the members that exert the same effects.

In the modification shown in fig. 27, two plates are provided. The cross section of the plate 187 of the two plates is formed in an L shape, and is set to abut against the end surface 1833 of the sleeve 183 and the outer wall 1834 of the sleeve 183.

In the modification shown in fig. 28, the shape of the sleeve is different from that of the first embodiment. Specifically, a portion 1835 near the end 1832 of the sleeve 183 is expanded in the radially outer direction.

In the modification shown in fig. 27 and 28, the movement in the radial direction of the spring 185 can be restricted while maintaining the inner diameter of the spring 185, as in the above-described embodiment.

In the above embodiment, the shaft has the fitting portion and the grooves provided on both sides of the fitting portion. However, the positional relationship between the embedded portion and the groove is not limited thereto. Fig. 29 and 30 show modifications related to the shape of the shaft.

In the modification shown in fig. 29, the shaft 25 has the fitting portion 253 having a polygonal cross-sectional shape substantially perpendicular to the rotation shaft RA25 on the other end portion 252 side of the one end portion 251 and on the one end portion 251 side of the other end portion 252. At this time, the groove 254 is provided between the two fitting portions 253.

In the modification shown in fig. 30, the shaft 25 has an embedded portion 253 having a polygonal cross-sectional shape substantially perpendicular to the rotation shaft RA25 on the other end 252 side of the one end 251. At this time, one groove 254 is provided between the fitting portion 253 and the other end 252. As a modification of the shaft 25 shown in fig. 30, the fitting portion 253 may be provided on one end 251 side of the other end 252, and the groove 254 may be provided between the fitting portion 253 and the one end 251.

In the modification shown in fig. 29 and 30, the valve member 20 can be prevented from being damaged in the same manner as in the above-described embodiment.

In the first embodiment, the restricting portion is integrally formed with the first housing. However, it is also possible to be independent of the first housing.

In the first, fourth to fifth embodiments, the recess is formed so as to be shallower in depth from the center of the valve member bottom where the axis is located toward the radial outer direction. However, the shape of the recess is not limited thereto. Or may be a constant depth. In this case, the deeper the depth, the larger the area of the side surface, so that breakage of the contact portion can be prevented.

In the first to fifth embodiments, the valve member side opening provided in the first tube portion communicates with the radiator passage. One of the valve member side openings of the second tube portion is communicated with the oil cooler passage, and the other valve member side opening is communicated with the air conditioner passage. However, the relation of the communication between the valve member side opening and these passages is not limited thereto. The one valve member side opening may be connected to two passages, or may be connected to two different passages in accordance with the rotation angle of the valve member.

In the above embodiment, the valve member bottom portion has a plurality of ribs formed to extend radially outward in the radial direction when viewed from the rotation axis on the space side surface. However, the shape of the rib is not limited thereto.

Fig. 31 is a perspective view of a valve member having a rib with a shape different from that of the first embodiment. Fig. 32 is a cross-sectional view of a rotary shaft RA25 including the valve member shown in fig. 31.

As shown in fig. 31, the valve member 20 is provided with a plurality of ribs 812 from the rotation axis RA25 toward the valve member side opening 222 on the surface of the valve member bottom 21 on the space 200 side. The plurality of ribs 812 are formed substantially parallel to each other. As a result, the cooling water flowing through the space 200 can be smoothly guided from the center of the valve member bottom 21 to the radial outer direction, as in the rib 212 of the first embodiment, and the strength of the valve member bottom 21 can be improved.

The contact portion of the fourth embodiment may be provided at the position of the contact portion of the fifth embodiment.

As described above, the present disclosure is not limited to the embodiment, and can be implemented in various modes without departing from the scope of the gist thereof.

The present disclosure has been described based on embodiments. However, the present disclosure is not limited to this embodiment and configuration. The present disclosure also includes various modifications and modifications within the equivalent scope. In addition, various combinations and modes, and further other combinations and modes including only one element, more than one element, or less than one element among them, are also within the scope and spirit of the present disclosure.

Claims

1. A valve device, comprising:

a valve housing having an inner space and a plurality of housing-side openings that communicate the inner space with the outside;

a valve member rotatably accommodated in the valve housing, the valve member having a plurality of valve member side openings communicable with the plurality of housing side openings and a communication path that communicates the plurality of valve member side openings;

a restriction portion capable of restricting rotation of the valve member;

an abutting portion provided in a space of the valve member and capable of abutting against the restricting portion; and

a shaft rotatably supporting the valve member,

the restriction portion is formed in an arc shape in the circumferential direction,

the regulating portion is formed so as to protrude in the axial direction from the valve housing toward the valve member bottom of the valve member, and so as to have a height that increases from the valve housing toward the valve member bottom as it goes from the radially outer side toward the radially inner side.

2. The valve device of claim 1, wherein,

the valve member is formed in a bottomed tubular shape,

the shaft is arranged in such a way that the rotation axis is located on the central axis of the valve member,

one of the plurality of valve member side openings communicating with one of the plurality of housing side openings is formed at one end of the valve member in a direction along the rotation axis,

Other valve member side openings of the plurality of valve member side openings capable of communicating with other of the plurality of housing side openings are formed in an outer wall of the radial outside of the valve member,

the space of the valve member provided with the contact portion is a concave recess formed in a concave shape at the other end of the valve member in the direction of the rotation axis, that is, at the bottom of the valve member.

3. The valve device of claim 2, wherein,

the depth of the recess becomes shallower from the center of the valve member bottom where the shaft is located toward the radially outer direction.

4. The valve device of claim 2, wherein,

having a plurality of said other valve member side openings,

when the valve member side opening closest to the abutting portion and the abutting portion among the plurality of other valve member side openings are projected onto a virtual plane perpendicular to the axis, a projected view of the abutting portion on the virtual plane and a projected view of the valve member side opening on the virtual plane are formed at different positions.

5. The valve device of claim 2, wherein,

the valve member has a rib formed on a side of the valve member bottom opposite to a side where the abutment portion is provided, the rib extending radially outward from a center of the valve member bottom where the shaft is located.

6. The valve device of claim 5, wherein,

the valve member has the one valve member side opening on a side of the valve member bottom opposite to a side where the abutment portion is provided.

7. The valve device of claim 2, wherein,

the restriction portion is integrally formed with the valve housing.

8. The valve device of claim 1, wherein,

the valve member is formed in a bottomed tubular shape,

the space of the valve member in which the abutting portion is provided is the communication path.

9. The valve device of claim 8, wherein,

the abutment portion is provided on a connecting member that connects one end of the valve member to the shaft.

10. The valve device of claim 8, wherein,

the contact portion is provided at one end of the valve member and protrudes in the radial direction.

11. The valve device according to any one of claims 1 to 10, wherein,

the abutment portion includes a surface capable of abutting against the restricting portion and a surface capable of abutting against the abutment portion of the restricting portion, and extends in a radial outer direction when viewed from the rotation axis.

12. The valve device according to any one of claims 1 to 10, wherein,

the space of the valve member provided with the abutting portion is a concave recess formed in a concave shape at the bottom of the valve member,

the valve member is provided with a cylindrical portion surrounding the shaft in the circumferential direction at the center of the recess,

the abutting part is connected with the inner peripheral wall of the concave and the cylinder part in the radial direction,

the abutment portion is formed such that a length in a direction along the rotation axis becomes shorter as it is away from the rotation axis.

13. The valve device according to any one of claims 1 to 10, wherein,

the valve member is provided with a central portion surrounding the shaft in the circumferential direction at the center of the recess,

The abutting portion is connected with the edge portion on the outer peripheral side of the recess and the central portion in the radial direction,