JP4849055B2 - Hydraulic control device and transmission - Google Patents

Description

  The present invention relates to a hydraulic control device and a transmission including a first valve body, a second valve body, and a separator plate sandwiched between the first valve body and the second valve body.

  BACKGROUND ART A vehicle transmission is provided with a hydraulic control device that supplies hydraulic oil to a hydraulic oil supply portion of the transmission. The hydraulic control device includes a first valve body, a second valve body, and a separator plate that is sandwiched between the first valve body and the second valve body. Oil that is hydraulic oil discharged from the oil pump is supplied to the hydraulic control device. The hydraulic control device supplies hydraulic oil to a hydraulic oil supply portion, for example, a drive portion that drives the supplied oil using oil, or a lubrication portion that uses oil as a lubricating oil.

  Here, as shown in Patent Document 1, there is a jet pump as a method for supplying oil for a transmission (in Patent Document 1, a belt-type continuously variable transmission). The jet pump is composed of a suction oil passage, a high-pressure oil passage, and a discharge oil passage. By discharging high-pressure oil in a high-pressure oil passage higher than the suction oil in the suction oil passage to the discharge oil passage, The suction oil is discharged together with the high pressure oil into the discharge oil passage. In the jet pump, high-pressure oil is discharged from the high-pressure oil passage to the discharge oil passage, and suction oil in the suction oil passage is sucked into the discharge oil passage by negative pressure generated in the discharge oil passage.

JP-A-8-219267

  In the prior art disclosed in Patent Document 1, a jet pump is provided in the transmission as a separate component from the hydraulic control device (in Patent Document 1, a liquid control device). Therefore, there is a possibility that the hydraulic control device for supplying hydraulic oil used in the transmission to the supply portion may be increased in size. Moreover, when it is another structural member, there exists a possibility that a number of parts may increase by providing a jet pump in a transmission. Furthermore, there is a possibility that parts for connecting the jet pump to the hydraulic control device or the hydraulic oil supply part, and processing are required.

  The present invention has been made in view of the above, and an object of the present invention is to provide a hydraulic control device and a transmission that can be downsized even if a jet pump is provided.

  In order to solve the above-described problems and achieve the object, the present invention includes a first valve body, a second valve body, and a separator plate sandwiched between the first valve body and the second valve body. In this hydraulic control apparatus, the discharge oil passage formed in the first valve body and the suction oil passage formed in the second valve body and formed in the separator plate are communicated with the discharge oil passage. A suction oil passage that is formed in the second valve body, and is provided in the separator plate with a high-pressure oil passage that is supplied with hydraulic oil having a pressure higher than that of the hydraulic oil in the suction oil passage. A jet pump including an oil passage and a high-pressure communication hole that communicates the discharge oil passage is formed.

  According to the present invention, the discharge oil passage is formed in the first valve body constituting the hydraulic control device, the suction oil passage and the high pressure oil passage are formed in the second valve body, and the high pressure oil passage and the discharge oil passage are formed in the separator plate. By forming a high-pressure communication hole that communicates with each other, the jet pump can be configured as a hydraulic control device. That is, the jet pump body can be constituted by the first valve body and the second valve body. Therefore, the constituent members of the hydraulic control device can be shared as the constituent members of the jet pump, and the size can be reduced even if the jet pump is provided. In addition, the number of parts and the number of processing can be reduced.

  According to the present invention, in the hydraulic control device including the first valve body, the second valve body, and the separator plate sandwiched between the first valve body and the second valve body, the first valve body includes From a discharge oil passage formed, a suction oil passage formed in the first valve body and communicating with the discharge oil passage, a hydraulic oil pressure formed in the second valve body and in the suction oil passage A high-pressure oil passage that is supplied with a high-pressure hydraulic oil, and a high-pressure communication hole that is formed in the separator plate and communicates the high-pressure oil passage and the discharge oil passage. It is characterized by.

  According to the present invention, a discharge oil passage and a suction oil passage are formed in the first valve body constituting the hydraulic control device, a high pressure oil passage is formed in the second valve body, and the high pressure oil passage and the discharge oil passage are formed in the separator plate. By forming a high-pressure communication hole that communicates with each other, the jet pump can be configured as a hydraulic control device. That is, the jet pump body can be constituted by the first valve body and the second valve body. Therefore, the constituent members of the hydraulic control device can be shared as the constituent members of the jet pump, and the size can be reduced even if the jet pump is provided. In addition, the number of parts can be reduced. Furthermore, since the processing of the separator plate for configuring the jet pump as a hydraulic control device is only the formation of the high-pressure communication hole, the number of processing can be further reduced.

  In the present invention, the hydraulic control device further includes a nozzle member, the nozzle member is sandwiched between the second valve body and the separator plate, and the tip portion is discharged through the high-pressure communication hole. It is preferable to face the oil passage.

  In the present invention, the hydraulic control device further includes a nozzle member, the nozzle member is press-fitted into the high-pressure communication hole, and the tip end portion faces the discharge oil passage through the high-pressure communication hole. Is preferred.

  In the present invention, in the hydraulic control device, it is preferable that the nozzle member has a cross section that decreases toward the tip.

  In the present invention, the nozzle member of the jet pump is other than the constituent members of the hydraulic control device, and is disposed in the hydraulic control device. Therefore, compared to the high-pressure communication hole formed in the separator plate, it is possible to form an arbitrary shape, for example, with a cross section decreasing toward the tip. Therefore, it is possible to suppress the flow of the high-pressure hydraulic oil from being disturbed and improve the performance of the jet pump.

  In the present invention, in the hydraulic control device, the high-pressure communication hole is preferably formed by projecting the separator plate toward the discharge oil passage.

  In the present invention, in the hydraulic control device, it is preferable that the high-pressure communication hole has a cross-section that decreases toward the discharge oil passage.

  In the present invention, the high-pressure communication hole of the separator plate protrudes toward the discharge oil passage, and is formed, for example, with a reduced cross section toward the discharge oil passage. Therefore, it is possible to suppress the flow of the high-pressure hydraulic oil from being disturbed and improve the performance of the jet pump.

  According to the present invention, in the transmission having the hydraulic oil supply part for supplying hydraulic oil in the hydraulic control apparatus, the hydraulic oil discharged from the jet pump of the hydraulic control apparatus is supplied to the hydraulic oil supply part. Is preferred.

  The hydraulic control device according to the present invention can share the constituent members of the hydraulic control device as the constituent members of the jet pump, and has an effect that the miniaturization can be achieved even if the jet pump is provided.

  Hereinafter, the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same. Here, in the following embodiment, the hydraulic control device according to the present invention is provided in a transmission including an automatic transmission (such as a belt type continuously variable transmission) or a manual transmission mounted on a vehicle such as an automobile or a truck, In the description, it is assumed that the hydraulic oil is supplied to the hydraulic oil supply portion that supplies the hydraulic oil in the transmission. In the following embodiment, the first valve body is the upper valve body and the second valve body is the lower valve body. However, the present invention is not limited to this, and the first valve body is the lower valve body. The second valve body may be the upper valve body.

[Embodiment 1]
1 to 3 are diagrams illustrating a configuration example of the hydraulic control apparatus according to the first embodiment. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line BB in FIG. As shown in FIGS. 1 to 3, the hydraulic control apparatus 100 according to the first embodiment includes an upper valve body 2, a lower valve body 3, and a separator plate 4. A jet pump 1-1 included in the hydraulic control device 100 includes an upper valve body 2, a lower valve body 3, and a separator plate 4.

  The upper valve body 2 is a first valve body and is formed with a plurality of oil passages. The upper valve body 2 is formed with a discharge oil passage 21 constituting the jet pump 1-1. The discharge oil passage 21 is formed with a joining portion 21a on the high-pressure oil passage side, that is, on the upstream side. The merging portion 21a is a portion facing the separator plate 4, and is provided with a suction communication hole 42 and a high-pressure communication hole which will be described later. Further, the discharge oil passage 21 has an extension portion 21b formed on the discharge oil passage side, that is, on the downstream side. The expanded portion 21b is formed with an enlarged diameter as it goes from the upstream side to the downstream side. The discharge oil passage 21 is connected to a hydraulic oil supply unit (not shown) of the transmission, in which the hydraulic control device 100 is provided, for example, a lubrication portion that requires a large amount of oil.

  The lower valve body 3 is a second valve body in which a plurality of oil passages are formed. The lower valve body 3 is formed with a suction oil passage 31 and a high-pressure oil passage 32 that constitute the jet pump 1-1. The suction oil passage 31 is a portion where the end 31 a faces the separator plate 4, and the suction communication hole 42 is opened. The high-pressure oil passage 32 is a portion where the end portion 32 a faces the separator plate 4, and the high-pressure communication hole 41 is opened. Here, the end 31 a of the suction oil passage 31 and the end 32 a of the high-pressure oil passage 32 are not in communication with each other. In the first embodiment, the end 31 a of the suction oil passage 31 is formed in, for example, a semicircular arc shape so as to surround the end 32 a of the high-pressure oil passage 32. The high-pressure oil passage 32 is formed so that the end portion 32 a is coaxial with the discharge oil passage 21 of the upper valve body 2. Here, the suction oil passage 31 is filled with hydraulic oil. The high-pressure oil passage 32 is supplied with hydraulic oil having a pressure higher than that of the hydraulic oil in the suction oil passage 31 from a high-pressure hydraulic oil supply device such as an oil pump (not shown). That is, the hydraulic pressure in the high-pressure oil passage 32 is higher than the hydraulic pressure in the suction oil passage 31.

  The separator plate 4 is sandwiched between an upper valve body 2 that is a first valve body and a lower valve body 3 that is a second valve body. The separator plate 4 performs communication between the oil passage formed in the upper valve body 2 and the oil passage formed in the lower valve body 3 and shuts off the communication. The separator plate 4 is formed with a high-pressure communication hole 41 and a suction communication hole 42 constituting the jet pump 1-1.

  The high-pressure communication hole 41, the high-pressure oil passage 32 and the discharge oil passage 21 are communicated with each other. Here, the high-pressure communication hole 41 has a circular shape, for example, and the shape is set according to the discharge flow rate and discharge pressure required for the jet pump 1-1. In the first embodiment, the high-pressure communication hole 41 has a high pressure in order to prevent the flow of high-pressure hydraulic oil discharged from the high-pressure oil passage 32 through the high-pressure communication hole 41 to the discharge oil passage 21 from being disturbed. In the cross section of the oil passage 32, in the embodiment, it is preferably formed with a cross section equal to or less than the cross section of the end portion 32a.

  The suction communication hole 42 communicates the suction oil passage 31 and the discharge oil passage 21. The suction communication hole 42 communicates the end portion 31 a of the suction oil passage 31 and the merging portion 21 a of the discharge oil passage 21. The suction communication hole 42 does not communicate with the high-pressure communication hole 41. The suction communication hole 42 has substantially the same shape (semi-arc shape) as the end portion 31 a and is formed so as to surround the high-pressure communication hole 41. That is, in the hydraulic control apparatus 100 according to the first embodiment, the jet pump 1-1 includes the discharge oil passage 21, the suction oil passage 31, the high-pressure oil passage 32, the high-pressure communication hole 41, and the suction communication hole 42. It is configured.

  Next, the operation of the jet pump 1-1 provided in the hydraulic control device 100 will be described. The high-pressure hydraulic oil supplied from the oil pump (not shown) to the high-pressure oil passage 32 is discharged to the junction portion 21a of the discharge oil passage 21 through the high-pressure communication hole 41 as shown by an arrow C in FIG. At this time, a negative pressure is generated in the merging portion 21a. The hydraulic fluid filled in the suction oil passage 31 due to the generated negative pressure (hydraulic fluid having a pressure lower than that of the high-pressure hydraulic fluid in the high-pressure oil passage 32), as shown by an arrow D in FIG. Is sucked into the merging portion 21a of the discharge oil passage 21. As a result, the hydraulic oil in the suction oil passage 31 is discharged into the discharge oil passage 21 together with the high-pressure hydraulic oil in the high-pressure oil passage 32. The hydraulic oil discharged to the discharge oil passage 21 is, as shown by an arrow E in the figure, a hydraulic oil supply section of a transmission (not shown) provided with the hydraulic pressure control device 100, for example, a lubricating portion that requires a large amount of oil. To function as lubricating oil for the lubrication part. Accordingly, the amount of high-pressure hydraulic oil can be reduced compared to the case where all the hydraulic oil supplied to the hydraulic oil supply unit is high-pressure hydraulic oil discharged from an oil pump (not shown), so that the efficiency can be reduced. Can be improved.

  As described above, in the hydraulic control apparatus 100 according to the first embodiment, the jet pump 1-1 is configured inside. That is, the upper valve body 2 and the lower valve body 3 can constitute the body of the jet pump 1-1. Therefore, the constituent members of the hydraulic control device 100 can be shared as the constituent members of the jet pump 1-1, and the size can be reduced even if the jet pump 1-1 is provided.

  Further, since the jet pump 1-1 is not a separate component from the hydraulic control device 100, an increase in the number of parts can be suppressed. Further, since the jet pump 1-1 is configured inside the hydraulic control device 100, parts for connecting the jet pump 1-2 to the hydraulic control device 100 and a hydraulic oil supply portion (not shown) and processing are required. do not do. Therefore, the number of parts can be reduced and the number of processing can be reduced. Thereby, cost reduction can be achieved.

  In the first embodiment, the high-pressure communication hole 41 of the separator plate 4 is formed by punching the separator plate 4, but the present invention is not limited to this. FIG. 4 is a diagram illustrating another configuration example of the hydraulic control apparatus according to the first embodiment. As shown in the figure, the high-pressure communication hole 43 may be formed by projecting the separator plate 4 to the discharge oil passage 21 side, that is, the downstream side. The high-pressure communication hole 43 can be formed by deep drawing the separator plate 4. By projecting the separator plate 4 to the downstream side, the flow of high-pressure hydraulic oil can be prevented from being disturbed without increasing the number of parts, and the performance of the jet pump can be improved. In addition, it is preferable that the high-pressure communication hole 43 is formed with a reduced cross section toward the discharge oil passage 21 side, that is, the downstream side. That is, the high-pressure communication hole 43 is preferably formed by being narrowed from the upstream side toward the downstream side. Thereby, it can further suppress that the flow of high-pressure hydraulic fluid is disturbed, and the performance of the jet pump can be further improved.

[Embodiment 2]
Next, a hydraulic control apparatus according to the second embodiment will be described. 4 to 6 are diagrams illustrating a configuration example of the hydraulic control apparatus according to the second embodiment. The hydraulic control device 200 according to the second embodiment shown in FIGS. 4 to 6 is different from the hydraulic control device 100 according to the first embodiment shown in FIGS. 1 to 3 in that the jet pump 1-2 changes the nozzle member 5. It is a point to prepare. The basic configuration of the hydraulic control apparatus 200 according to the second embodiment is substantially the same as the basic configuration of the hydraulic control apparatus 100 according to the first embodiment, as shown in FIGS. Therefore, the description of the same reference numerals is omitted or simplified. In the hydraulic control apparatus 200 according to the second embodiment, the jet pump 1-2 has a discharge oil passage 21, a suction oil passage 31, a high-pressure oil passage 32, a high-pressure communication hole 43, a suction communication hole 42, and a nozzle member. 5. Reference numeral 6 denotes a seal member that seals between the nozzle member 5 and the separator plate 4, for example, an O-ring.

  A notch 33 is formed in the high pressure oil passage 32 of the lower valve body 3. The notch 33 is formed in a portion of the end portion 32a facing the separator plate 4. Here, the notch 33 is formed in a substantially circular shape.

  The high-pressure communication hole 43 of the separator plate 4 has a circular shape, and has a diameter that is substantially the same as the width of the end portion 32 a of the high-pressure oil passage 32.

  The nozzle member 5 is sandwiched between the lower valve body 3 as the second valve body and the separator plate 4. The nozzle member 5 has a substantially cylindrical shape and includes a collar portion 51 and a main body portion 52. The collar portion 51 is formed at one end portion of both end portions in the axial direction of the nozzle member 5 and is formed to project outward in the radial direction. Note that the shape of the collar portion 51 is set so that the collar portion 51 can be inserted into the cutout portion 33 of the lower valve body 3. The main body 52 is formed such that the cross-section decreases as it goes to the other end of the tip 5a, here both ends of the nozzle member 5 in the axial direction. That is, the main body portion 52 is formed so as to be narrowed toward the distal end portion 5a. In the second embodiment, the inner diameter of the main body portion 52 is formed so as to decrease toward the distal end portion 5a.

  Here, the nozzle member 5 is inserted between the lower valve body 3 and the separator plate 4 when the separator plate 4 is sandwiched between the upper valve body 2 and the lower valve body 3. Specifically, the collar portion 51 of the nozzle member 5 is inserted into the cutout portion 33 of the lower valve body 3 so that the distal end portion 5 a is located on the upstream side, and the O-ring 6 is inserted into the main body portion 52. . When the lower valve body 3 and the separator plate 4 are brought into contact with each other, the main body 52 in which the O-ring 6 is inserted is inserted into the high-pressure communication hole 43. At this time, the O-ring 6 comes into contact with the lower valve body 3 and the separator plate 4, and the gap between the nozzle member 5 and the separator plate 4 is sealed. As a result, the tip 5 a of the nozzle member 5 faces the discharge oil passage 21 through the high-pressure communication hole 43.

  Next, the operation of the jet pump 1-2 provided in the hydraulic control device 200 will be described. The high-pressure hydraulic oil supplied from the oil pump (not shown) to the high-pressure oil passage 32 is joined to the joining portion 21a of the discharge oil passage 21 via the nozzle member 5 inserted into the high-pressure communication hole 43 as shown by an arrow H in FIG. Discharged. At this time, a negative pressure is generated in the merging portion 21a. The hydraulic fluid filled in the suction oil passage 31 due to the generated negative pressure (hydraulic fluid having a pressure lower than that of the high-pressure hydraulic fluid in the high-pressure oil passage 32), as shown by an arrow I in FIG. Is sucked into the merging portion 21a of the discharge oil passage 21. As a result, the hydraulic oil in the suction oil passage 31 is discharged into the discharge oil passage 21 together with the high-pressure hydraulic oil in the high-pressure oil passage 32. The hydraulic oil discharged to the discharge oil passage 21 is, as shown by an arrow J in the figure, a hydraulic oil supply section of a transmission (not shown) provided with a hydraulic pressure control device 200, for example, a lubricating part that requires a large amount of oil. To function as lubricating oil for the lubrication part. Accordingly, the amount of high-pressure hydraulic oil can be reduced compared to the case where all the hydraulic oil supplied to the hydraulic oil supply unit is high-pressure hydraulic oil discharged from an oil pump (not shown), so that the efficiency can be reduced. Can be improved.

  As described above, in the hydraulic control apparatus 200 according to the second embodiment, the jet pump 1-2 is configured inside. That is, the upper valve body 2 and the lower valve body 3 can constitute the body of the jet pump 1-2. Therefore, the constituent members of the hydraulic control device 200 can be shared as the constituent members of the jet pump 1-2, and the size can be reduced even if the jet pump 1-2 is provided.

  Further, the nozzle member 5 of the jet pump 1-2 is a component other than the constituent members of the hydraulic control device 200, and is disposed in the hydraulic control device 200. Therefore, as compared with the high-pressure communication hole 41 formed in the separator plate 4, it is possible to form an arbitrary shape, for example, with a cross section decreasing toward the tip portion 5a. Therefore, the flow of the high-pressure hydraulic oil can be prevented from being disturbed, and the performance of the jet pump 1-2 can be improved.

  Further, since the jet pump 1-2 is not a separate component from the hydraulic control device 200, an increase in the number of parts can be suppressed. In addition, since the jet pump 1-2 is configured inside the hydraulic control device 200, parts for connecting the jet pump 1-2 to the hydraulic control device 200 and a hydraulic oil supply portion (not shown) and processing are required. do not do. Therefore, the number of parts can be reduced and the number of processing can be reduced. Thereby, cost reduction can be achieved.

  In the second embodiment, the nozzle member 5 is sandwiched between the lower valve body 3 as the second valve body and the separator plate 4, but the present invention is not limited to this. FIG. 8 is a diagram illustrating another configuration example of the hydraulic control apparatus according to the second embodiment. As shown in the figure, the nozzle member 7 may be press-fitted into the high-pressure communication hole 44.

  Similarly to the nozzle member 5, the nozzle member 7 has a substantially cylindrical shape, and includes a main body portion 71 and a collar portion 72. The main body 71 is formed such that its cross section decreases as it goes from one end of the both ends in the axial direction of the nozzle member 7, that is, from the upstream side to the downstream side. That is, the main body 71 is formed to be narrowed as it goes from the upstream side to the downstream side. Here, the inner diameter of the main body 71 is formed so as to decrease from the upstream side toward the downstream side. The collar portion 72 is formed at the other end portion of the both end portions in the axial direction of the nozzle member 7, and is formed so as to protrude radially outward. The shape of the collar portion 72 is set so that the collar portion 72 can be inserted into the end portion 32 a of the high-pressure oil passage 32 of the lower valve body 3. Accordingly, since an O-ring for sealing between the nozzle member 7 and the separator plate 4 is not necessary, the number of parts can be further reduced. The nozzle member 7 is press-fitted into the high-pressure communication hole 44 of the separator plate 4 from the upstream side (high-pressure oil passage side) before the separator plate 4 is sandwiched between the upper valve body 2 and the lower valve body 3. As a result, the tip 7 a of the nozzle member 7 faces the discharge oil passage 21 via the high-pressure communication hole 44.

[Embodiment 3]
Next, a hydraulic control apparatus according to the third embodiment will be described. FIGS. 9 to 11 are diagrams illustrating a configuration example of the hydraulic control apparatus according to the third embodiment. The hydraulic control device 300 according to the third embodiment shown in FIGS. 9 to 11 is different from the hydraulic control device 100 according to the first embodiment shown in FIGS. 1 to 3 in that the suction oil passage 22 is the first valve body. This is a point formed in the upper valve body 2. The basic configuration of the hydraulic control apparatus 300 according to the third embodiment is substantially the same as the basic configuration of the hydraulic control apparatus 100 according to the first embodiment, as shown in FIGS. Therefore, the description of the same reference numerals is omitted or simplified. In the hydraulic control apparatus 300 according to the third embodiment, the jet pump 1-3 includes the discharge oil passage 21, the suction oil passage 22, the high-pressure oil passage 32, and the high-pressure communication hole 43.

  The upper valve body 2 is formed with a discharge oil passage 21 and a suction oil passage 22 constituting the jet pump 1-1. The suction oil passage 22 is formed in communication with the discharge oil passage 21. In the third embodiment, the suction oil passage 22 is formed in the upper valve body 2 so that the end portion 22a communicates with the joining portion 21a. That is, the hydraulic oil in the suction oil passage 22 flows into the discharge oil passage 21 from one direction. Note that the suction oil passage 22 and the discharge oil passage 21 may be communicated so that the hydraulic oil in the suction oil passage 22 flows into the discharge oil passage 21 from a plurality of directions.

  On the other hand, in the lower valve body 3, only the high-pressure oil passage 32 constituting the jet pump 1-1 is formed. Further, only the high-pressure communication hole 41 constituting the jet pump 1-1 is formed in the separator plate 4.

  Next, the operation of the jet pump 1-3 provided in the hydraulic control device 300 will be described. High-pressure hydraulic oil supplied from an oil pump (not shown) to the high-pressure oil passage 32 is discharged to the merging portion 21a of the discharge oil passage 21 through the high-pressure communication hole 41 as shown by an arrow M in FIG. At this time, a negative pressure is generated in the merging portion 21a. The hydraulic oil filled in the suction oil passage 22 due to the generated negative pressure (the hydraulic oil having a lower pressure than the high-pressure hydraulic oil in the high-pressure oil passage 32) is discharged from the discharge oil passage 21 as shown by an arrow N in the figure. Is sucked into the merging portion 21a. As a result, the hydraulic oil in the suction oil passage 22 is discharged into the discharge oil passage 21 together with the high-pressure hydraulic oil in the high-pressure oil passage 32. The hydraulic oil discharged to the discharge oil passage 21 is, as shown by an arrow O in the figure, a hydraulic oil supply section of a transmission (not shown) provided with the hydraulic pressure control device 300, for example, a lubricating portion that requires a large amount of oil. To function as lubricating oil for the lubrication part. Accordingly, the amount of high-pressure hydraulic oil can be reduced compared to the case where all the hydraulic oil supplied to the hydraulic oil supply unit is high-pressure hydraulic oil discharged from an oil pump (not shown), so that the efficiency can be reduced. Can be improved.

  As described above, in the hydraulic control apparatus 300 according to the third embodiment, the jet pump 1-3 is configured inside. That is, the upper valve body 2 and the lower valve body 3 can constitute the body of the jet pump 1-3. Therefore, the constituent members of the hydraulic control device 300 can be shared as the constituent members of the jet pump 1-3, and even if the jet pump 1-3 is provided, the size can be reduced.

  Further, since the jet pump 1-3 is not a separate component from the hydraulic control device 300, an increase in the number of parts can be suppressed. In addition, since the jet pump 1-3 is configured inside the hydraulic control device 300, the hydraulic control device 100 and a hydraulic oil supply portion (not shown) and parts for connecting the jet pump 1-3 are not required. The number of parts can be reduced. Furthermore, since the processing of the separator plate 4 for configuring the jet pump 1-3 in the hydraulic control device 300 is only the formation of the high-pressure communication hole 41, the number of processing is further reduced as compared with the first and second embodiments. be able to. Thereby, further cost reduction can be achieved.

  As described above, the hydraulic control device according to the present invention is useful for a hydraulic control device including a first valve body, a second valve body, and a separator plate sandwiched between the first valve body and the second valve body. In particular, even if a jet pump is provided, it is suitable for downsizing.

1 is a diagram illustrating a configuration example of a hydraulic control apparatus according to a first embodiment. It is a figure (AA sectional drawing of FIG. 1) which shows the structural example of the hydraulic control apparatus concerning Embodiment 1. FIG. It is a figure (BB sectional drawing of FIG. 1) which shows the structural example of the hydraulic control apparatus concerning Embodiment 1. FIG. It is a figure which shows the other structural example of the hydraulic control apparatus concerning Embodiment 1. FIG. FIG. 3 is a diagram illustrating a configuration example of a hydraulic control apparatus according to a second embodiment. FIG. 6 is a diagram (cross-sectional view taken along line FF in FIG. 5) illustrating a configuration example of a hydraulic control device according to a second exemplary embodiment. It is a figure (GG sectional drawing of FIG. 5) which shows the structural example of the hydraulic control apparatus concerning Embodiment 2. FIG. FIG. 10 is a diagram illustrating another configuration example of the hydraulic control apparatus according to the second embodiment. FIG. 6 is a diagram illustrating a configuration example of a hydraulic control apparatus according to a third embodiment. FIG. 10 is a diagram illustrating a configuration example of a hydraulic control device according to a third embodiment (a cross-sectional view taken along the line KK in FIG. 8). FIG. 10 is a diagram illustrating a configuration example of a hydraulic control device according to a third embodiment (LL sectional view of FIG. 8).

Explanation of symbols

1-1 to 1-3 Jet pump 2 Upper valve body (first valve body)
21 Discharge oil passage 21a Merging portion 21b Expansion portion 22 Suction oil passage 3 Lower valve body (second valve body)
31 Suction oil passage 31a End portion 32 High pressure oil passage 32a End portion 33 Notch portion 4 Separator plate 41, 43, 44 High pressure communication hole 42 Suction communication hole 5 Nozzle member 5a Tip portion 51 Brim portion 52 Main body portion 6 O ring 7 Nozzle member 7a Tip 71 Brim 72 Body 100, 200, 300 Hydraulic control device

Claims (8)

In a hydraulic control device comprising a first valve body, a second valve body, and a separator plate sandwiched between the first valve body and the second valve body,
A discharge oil passage formed in the first valve body;
A suction oil passage formed in the second valve body and in communication with the discharge oil passage through a suction communication hole formed in the separator plate;
A high pressure oil passage formed in the second valve body and supplied with hydraulic oil having a pressure higher than the pressure of the hydraulic oil in the suction oil passage;
A high-pressure communication hole formed in the separator plate and communicating the high-pressure oil passage and the discharge oil passage;
A hydraulic control device comprising: a jet pump comprising: In a hydraulic control device comprising a first valve body, a second valve body, and a separator plate sandwiched between the first valve body and the second valve body,
A discharge oil passage formed in the first valve body;
An intake oil passage formed in the first valve body and communicating with the discharge oil passage;
A high pressure oil passage formed in the second valve body and supplied with hydraulic oil having a pressure higher than the pressure of the hydraulic oil in the suction oil passage;
A high-pressure communication hole formed in the separator plate and communicating the high-pressure oil passage and the discharge oil passage;
A hydraulic control device comprising: a jet pump comprising: A nozzle member,
3. The hydraulic control device according to claim 1, wherein the nozzle member is sandwiched between the second valve body and the separator plate, and the tip end portion faces the discharge oil passage through the high-pressure communication hole. A nozzle member,
The hydraulic control device according to claim 1 or 2, wherein the nozzle member is press-fitted into the high-pressure communication hole, and the tip end portion faces the discharge oil passage through the high-pressure communication hole.   The hydraulic control device according to claim 3 or 4, wherein the nozzle member has a cross-section that decreases toward the tip.   The hydraulic control device according to claim 1, wherein the high-pressure communication hole is formed by causing the separator plate to protrude toward the discharge oil passage.   The hydraulic control device according to claim 6, wherein the high-pressure communication hole has a cross-section that decreases toward the discharge oil passage side. In a transmission having a hydraulic oil supply portion for supplying hydraulic oil,
The transmission characterized by supplying the hydraulic oil discharged from the jet pump of the hydraulic control apparatus according to any one of claims 1 to 7 to the hydraulic oil supply section.

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