JP4954163B2 - Automatic transmission assembly structure - Google Patents

Description

  The present invention relates to an assembly structure of an automatic transmission, and more specifically, a valve body in which a plurality of substantially cylindrical solenoid valves are incorporated, and a plurality of unit valves fixed to the valve bodies are attached to drive the plurality of solenoid valves. The present invention relates to an assembly structure of an automatic transmission including an electronic control unit for controlling.

Conventionally, as a technique related to the assembly structure of an automatic transmission, a technique has been proposed in which a unit base on which an electronic control unit is mounted is assembled to a valve body formed with a hydraulic circuit, and a plurality of solenoid valves are incorporated into the valve body. (For example, refer to Patent Document 1). In this technology, when the electronic control unit and the solenoid valve in which the connector part is integrally formed are electrically connected during assembly, the position of the connector part formed on the unit base is close to the valve assembly position of the valve body. Connect the electronic control unit and the connector part by wiring so that the connector part is connected by incorporating the solenoid valve into the valve body and simultaneously fitting the connector part of the solenoid valve to the connector part on the unit side. It is said.
JP 2001-271918 A

  By the way, the assembly structure is not limited to the above-described one, and there is an assembly structure in which a unit base in which an electronic control unit is mounted on a valve body in which a plurality of solenoid valves are incorporated in advance. As a connection method between the connector parts in this assembly structure, a plurality of connector parts corresponding to the number of solenoid valves are formed on the unit base, and a connector part is integrally formed on each of the plurality of solenoid valves, Attach at least one of the connector part on the unit side and the connector part on the valve side to the end of a flexible wire and fit the connectors one by one at the time of assembly. The method of combining is mentioned. However, in the former case, it may be difficult to fit together due to the positional deviation of the connector part formation position due to manufacturing tolerances. In the latter case, while confirming the connector parts to be connected to each other Since it has to be fitted, it takes time and effort, and in any case, the connectors cannot be smoothly connected to each other, and as a result, the assembly of the automatic transmission is impaired.

  The main structure of the assembly structure of the automatic transmission according to the present invention is to improve the assemblability.

  The assembly structure of the automatic transmission according to the present invention employs the following means in order to achieve the main object described above.

The assembly structure of the automatic transmission of the present invention is as follows:
An assembly structure of an automatic transmission comprising: a valve body in which a plurality of substantially cylindrical solenoid valves are incorporated; and an electronic control unit that is attached to a unit base fixed to the valve body and controls driving of the plurality of solenoid valves. Because
The solenoid valve is formed with a first connector portion which is one of a pair of male and female connectors whose fitting direction is a radial direction, and a convex portion protruding in the same direction as the first connector portion,
A second connector portion that is the other of the pair of male and female connectors that can be fitted to each of the first connector portions of the plurality of solenoid valves on a surface side fixed to the valve body on the unit base; A concave portion that can be fitted to each of the convex portions of the plurality of solenoid valves in accordance with the fitting of the pair of male and female connectors, and a convex portion receiver having inclined surfaces rising from the edge of the concave portion on both sides of the concave portion. Form the
The plurality of solenoid valves are assembled in the valve body with play around an axis, and the unit base is assembled to the valve body by aligning at least the convex part of the solenoid valve to be received by the convex part receiver of the unit base. It is characterized by that.

  In the assembly structure of the automatic transmission of the present invention, a plurality of substantially cylindrical solenoid valves are assembled in the valve body with play around the shaft center, and one of the pair of male and female connectors whose fitting direction is radial. The convex part of the solenoid valve projecting in the same direction as the first connector part is received by a convex part receiver having inclined surfaces rising from the edge of the concave part on both sides of the concave part of the unit base that can be fitted to each of the convex parts. Assemble the unit base to the valve body. Thus, before fitting the pair of male and female connectors, the convex portion received by the convex portion receptacle is guided along the inclined surface to the concave portion side so that the posture of the solenoid valve is corrected. Even if it is incorporated with play, it is possible to fit together a plurality of connector portions after setting them to face each other. At this time, even if the position where the second connector part of the unit base is shifted due to manufacturing tolerances, the first connector part of the solenoid valve is fitted so as to follow the position shift due to play around the axis, It can be fitted more smoothly than those without play. As a result, it is possible to smoothly connect the pair of male and female connectors and to improve the assemblability. Here, the “automatic transmission” can be an in-vehicle automatic transmission.

  In the assembly structure of the automatic transmission according to the present invention, a protrusion is formed on one of the unit base or the valve body, and the protrusion is inserted into the other of the unit base or the valve body. It is also possible to form a through hole that allows the unit base to slide in the aligned state while being aligned. By doing so, the unit base can be easily aligned, and the assemblability can be further improved.

  In the assembly structure of the automatic transmission according to the present invention, the convex portion may be formed so as to be press-fit into the concave portion. In this way, even if the solenoid valve is incorporated in the valve body with play, it is fixed by assembling the unit base, so that it is possible to prevent the terminals of the connector portion from being rubbed and worn by vibration accompanying play.

  Furthermore, in the assembly structure of the automatic transmission according to the present invention, the convex portion may be formed in a columnar shape with a tapered end. By so doing, the taper surface comes into contact with the guide receiving portion, so that the slidability can be improved and the recess can be smoothly fitted.

  In the assembly structure of the automatic transmission according to the present invention, the inclined surface of the convex portion receiver may be formed so that the cross-sectional shape is substantially V-shaped or semi-circular. In this aspect of the automatic transmission assembly structure of the present invention, the inclined surface of the convex portion receiver may be formed so that the angle of the inclined surface is 55 to 65 degrees. In this way, the posture of the solenoid valve can be corrected more smoothly.

  Further, in the assembly structure of the automatic transmission according to the present invention, the inclined surface of the convex portion receiver is formed so that a cross-sectional shape in a direction crossing the inclination is substantially V-shaped or semi-circular. You can also In this way, the posture of the solenoid valve can be corrected smoothly even when the convex portion is displaced in the axial direction.

  Furthermore, in the assembly structure of the automatic transmission according to the present invention, a groove is formed in the solenoid valve in a direction orthogonal to the axial direction, and communicates with the groove when the solenoid valve is incorporated in the valve body. The solenoid valve may be assembled to the valve body by forming a pin hole and inserting a pin penetrating the pin hole and the groove. In this way, the solenoid valve can be incorporated into the valve body with a simple structure and play around the axis.

  Next, the best mode for carrying out the present invention will be described using examples.

  FIG. 1 is an exploded perspective view of an automatic transmission 10 assembled using the automatic transmission assembly structure of the present invention, and FIG. 2 is an external perspective view showing a part of the external appearance of the valve body 20 viewed from the lower surface side. FIG. 3 is an explanatory view showing a state in which the solenoid valve 25 is inserted into the valve insertion portion 23 formed in the valve body 20, and FIG. 4 shows an external view of the unit base 30 as seen from the lower surface side. FIG. 5 is an external perspective view, and FIG. 5 is an external perspective view showing the external appearance of the unit table 30 as viewed from the upper surface side.

  The automatic transmission 10 is configured as an in-vehicle automatic transmission that transmits power from an engine included in an automobile to an axle side, and includes a power transmission mechanism (not shown) including a planetary gear mechanism and a clutch, and a manual valve. A valve body 20 that constitutes a hydraulic circuit that turns on and off the clutch by hydraulic pressure together with a solenoid valve 25 that inputs and regulates line pressure via a pressure supply (not shown) and supplies the clutch to the clutch; An electronic control unit for automatic transmission (hereinafter referred to as ATECU) 42 for switching between and an electronic control unit for shift-by-wire (hereinafter referred to as SBWECU) that electrically detects a shift operation and controls driving of a manual valve at a position corresponding to the shift operation. 44 and attached The knit base 30, the oil pan 60 for storing AT oil, and the oil pump (not shown) drive the oil in the oil pan 60 and filter it to supply it to the valve body 20 from a discharge port (not shown). And a strainer 50 that supplies a lubrication part such as a planetary gear mechanism and a bearing that supports a rotating shaft. These are accommodated in the transmission case 12 with an oil pan 60 attached to the bottom.

  2 and 3, the valve body 20 exposes the plurality of fixed bases 21 formed with bolt holes 21a to 21g and the electromagnetic part 25a of the solenoid valve 25 to the outside and the valve part 25b to the inside. A plurality of valve insertion portions 23 into which solenoid valves 25 are inserted so as to form a hydraulic circuit by communicating with formed oil passages (not shown), and a plurality of substantially cylindrical solenoid valves inserted into the valve insertion portions 23 25. The valve insertion portion 23 has a pin hole 24 formed on the upper surface. In the solenoid valve 25, a connector part 27 having a terminal 27a protruding in the radial direction is formed integrally with the electromagnetic part 25a, and a pin groove 26 is formed in the valve part 25b along the protruding direction of the terminal 27a. Further, a terminal guide 28 protruding in the same direction as the terminal 27a is formed on the connector part 27 of the electromagnetic part 25a. The terminal guide 28 has a substantially cylindrical shape with a tapered tip, and is formed so as to be higher than the height of the terminal 27a, and the diameter of the terminal guide 28 extends from the position lower than the height of the terminal 27a to the root. Ribs 28a protruding in the direction are formed at three locations. Details of the terminal guide 28 will be described later. The solenoid valve 25 is incorporated into the valve body 20 in the valve insertion portion 23 while maintaining the posture of the solenoid valve 25 so that the terminal 27a is substantially perpendicular to the surface of the valve body 20 on which the valve insertion portion 23 is formed. The valve portion 25b of the solenoid valve 25 is inserted (FIG. 3 (1)), the posture of the solenoid valve 25 is adjusted so that the pin groove 26 is in a rotational position communicating with the pin hole 24, and the pin 29 is inserted into the pin hole 24. (FIG. 3 (2)). The insertion of the pin 29 prevents the solenoid valve 25 from coming off from the valve insertion portion 23. Here, the pin groove 26 is formed so that the groove depth is deeper than the outer diameter of the pin 29. For this reason, the pin 29 is inserted into the pin groove 26 with a clearance, and the solenoid valve 25 is within a range in which the edge of the pin groove 26 contacts the pin 29 even when the pin 29 is inserted into the pin groove 26. Can rotate around the axis. That is, the solenoid valve 25 is pinned to the valve body 20 with play around the axis.

  As shown in FIGS. 4 and 5, the unit table 30 includes a resin frame 31 and a metal plate 32 that forms the bottom of the unit table 30, and two openings formed in the frame 31. The AT ECU 42 and the SBWECU 44 are accommodated in the 31a and 31b, respectively, and are fixed to the metal plate 32 by screws 46 and 48. The frame 31 includes a plurality of connector portions 35 respectively connected to the connector portion 27 of the solenoid valve 25, and an outside of a substantially cylindrical portion of the terminal guide 28 of the solenoid valve 25 at a position adjacent to the plurality of connector portions 35. A terminal guide hole 36a having a diameter slightly larger than the diameter and a plurality of guide receivers 36 each having an inclined surface 36b having a substantially semicircular cross section on both sides of the terminal guide hole 36a. . FIG. 6 is a cross-sectional view taken along the line AA in the external perspective view of the unit base 30 in FIG. As shown in the figure, the connector part 35 is formed with a pair of terminals 35a into which the pair of terminals 27a of the connector part 27 of the solenoid valve 25 are respectively fitted. Further, FIG. 7 shows a BB cross-sectional view showing a BB cross section in the external perspective view of the unit base 30 of FIG. As shown in the figure, the guide hole 36a is formed so as to penetrate the frame 31, and the inclined surface 36b is formed so that the angle α of the inclined surface is in the range of 55 degrees to 65 degrees. To be formed. Although not shown, the unit base 30 accommodates a bus bar as a wiring electrically connected to the AT ECU 42, the SBECU 44, and the connector portion 35 in the frame 31. Further, the unit base 30 has a metal plate 34 attached to the upper surface in FIG. 1 (lower surface in FIG. 5) with the opening portions 31a and 31b in which the ATTEC 42 and the SBECU 44 are disposed between the sealing materials 39a and 39b, respectively. The openings 31a and 31b are closed by the metal plate 34. The metal plate 32 that forms the bottom of the unit base 30 is attached to the opening 56 formed on the upper surface of the strainer 50 in FIG. 1 with the sealing material 38 interposed therebetween, whereby the opening of the strainer 50 is opened. 56 is closed. That is, the metal plate 32 of the unit base 30 is configured as a part of the case of the strainer 50. Further, as shown in FIG. 4, the metal plate 32 has fins 32a and 32b formed at portions corresponding to the openings 31a and 31b. Accordingly, the metal plate 32 is immersed in the AT oil in the strainer 50, and the AT oil sucked into the strainer 50 is introduced into the unit chamber via the fins 32a and 32b and is generated in the AT ECU 42 and the SBECU 44. Heat can be dissipated by heat exchange with the AT oil.

  Although not shown in detail, the ATECU 42 and the SBWECU 44 arranged on the unit base 30 are each configured as a microprocessor centered on a CPU. In addition to the CPU, a ROM for storing a processing program and data are temporarily stored. The circuit board on which electronic components constituting these RAMs, input / output ports, and communication ports are mounted is packaged with resin. The ATECU 42 receives a shift position signal from a shift position sensor that detects the operation position of the shift lever, a vehicle speed signal from a vehicle speed sensor that detects the vehicle speed, and the like via an input port, and is input to the solenoid valve 25 of the hydraulic circuit. The drive signal is output through an output port. A shift position signal from a shift position sensor that detects the operation position of the shift lever is input to the SBWECU 44 via an input port, and a drive signal to a manual valve that selects a line pressure supply path is output port. It is output via. The ATECU 42 and the SBWECU 44 are connected to each other via a communication port, and exchange various control signals and data.

  As shown in FIG. 2, the valve body 20 is formed with slide guides 22 protruding in the upward direction in FIG. 2 to guide the horizontal mounting position of the unit base 30 at two diagonal corners. Yes. The slide guide 22 is formed in a stepped shape so that the outer diameter is substantially the same as the upper surface of the fixed base 21 and the outer diameter is reduced by one step. On the other hand, as shown in FIGS. 4 and 5, the unit base 30 is formed with a slide guide hole 33 into which a small diameter portion of the slide guide 22 can be inserted at a position corresponding to the slide guide 22. The slide guide hole 33 is sized so as to allow the unit base 30 to slide in a state in which the slide guide 22 is inserted, that is, in a state in which there is no horizontal displacement with respect to the valve body 22. For this reason, by inserting the slide guide 22 into the slide guide hole 33, the unit base 30 can be aligned with the valve body 22 in the horizontal direction at the time of assembly, and the unit base 30 can be placed in the valve body 20 while being aligned. Can slide to the side. The unit base 30 is slid along the slide guide 22 and brought into contact with the fixed base 21 so that the vertical alignment with respect to the valve body 22 can be achieved.

  The valve body 20, the unit base 30, and the strainer 50 are assembled such that the bolt holes 50 a to 50 g and the bolt holes 30 a to 30 g communicate with each other with the strainer 50 and the unit base 30 interposed between the openings 56 and the sealing material 38 interposed therebetween. At the same time, the metal plate 34 is stacked on the unit base 30 so that the bolt holes 30a to 30g and the bolt holes 34a to 34g communicate with each other with the sealing members 38 and 39 sandwiched between the openings 31a and 31b. It can be performed by tightening the lower surface of the valve body 20 through the corresponding bolt holes 50a to 50i, 30a to 30g, 34a to 34g, 21a to 21g. Although not shown, the valve body 20 can be similarly fixed to the transmission case 12 by tightening bolts.

  Here, attachment of the unit base 30 to the valve body 20 when the valve body 20, the unit base 30, and the strainer 50 are assembled will be described. FIG. 8 is an external perspective view showing an external appearance before the unit base 30 is attached to the valve body 20, and FIG. 9 shows a change in the posture of the solenoid valve 25 when the unit base 30 is attached to the valve body 20. FIG. 10 is an explanatory view, and FIG. 10 is an explanatory view showing a state after the unit base 30 is attached to the valve body 20. 8 to 10, the strainer 50 is not attached to the unit base 30, but may be attached. 9 and 10 (b), the left side of the wavy line shows a cross-section of the state where the slide guide 25a is inserted into the slide guide hole 33a and the state where the terminal guide 28 is fitted into the terminal guide hole 36a, and the right side of the wavy line Shows a cross section of the state in which the terminal 27a is fitted to the terminal 35a. The unit base 30 is attached by first inserting the slide guide 22 into the slide guide hole 33 and aligning the unit base 30 in the horizontal direction (FIG. 9A). At this time, as shown in the figure, the terminal 27a and the terminal guide 28 may be displaced from the terminal 35a due to play around the axis of the solenoid valve 25. Further, the unit base 30 is positioned such that the terminal guide 28 can be received by the inclined surface 36b of the guide receiver 36 when it is slid to the valve body 20 side by alignment. Next, when the unit base 30 is slid, the tip of the terminal guide 28 comes into contact with the inclined surface 36b of the guide receiver 36 (FIG. 9B). At this time, a force that slides downward acts on the unit base 30, and therefore, a force also acts on the terminal guide 28. This force can be considered as being decomposed into a component force in the slope direction of the inclined surface 36b and a component force perpendicular to the slope of the inclined surface 36b, and the component force in the slope direction causes the terminal guide 28 along the slope direction. Acts to move. For this reason, the terminal guide 28 starts to move in the right direction in the drawing so as to be guided to the guide hole 36a formed in the center of the guide receiver 36. At this time, since the cross-sectional shape in the direction crossing the inclined surface 36b of the guide receiver 36 is formed to be substantially semicircular, the terminal guide 28 can be smoothly moved even when the solenoid valve 25 is displaced in the axial direction. It can be led to the hole 36a. Along with this, the solenoid valve 25 also starts to rotate clockwise in the drawing, that is, in the direction in which the terminal 27a faces the terminal 35a. When the unit base 30 is further slid, as the terminal guide 28 further moves toward the guide hole 36a, the terminal 27a gradually approaches the direction facing the terminal 35a (FIG. 9C). When the guide 28 is fitted into the terminal guide hole 36a, the solenoid valve 25 stops (FIG. 9 (d)). As shown in the figure, the terminal 27a is in a direction facing the terminal 35a by correcting the posture of the solenoid valve 25. Similarly, the other plurality of terminals 27a are also in the direction facing the corresponding terminals 35a. For this reason, when the unit base 30 is further slid from the state of FIG. 9D, the plurality of terminals 27a are smoothly and collectively fitted to the corresponding terminals 35a to connect the connector portions 27 and 35, respectively. The attachment of the unit base 30 to the valve body 20 is completed (FIGS. 10A and 10B). At this time, even if the position where the terminal 35a of the connector portion 35 is formed is shifted due to manufacturing tolerances, etc., the terminal 27a is fitted to the terminal 35a so as to follow the position shift due to the play of the solenoid valve 25. Can be combined. When the terminal 27a is completely fitted into the terminal 35a, the terminal guide 28 is also fitted into the guide hole 36a to the vicinity of the root. As described above, since the diameter of the guide hole 36a is slightly larger than the outer diameter of the terminal guide 28, the terminal guide 28 is press-fitted by being inserted to the vicinity of the root where the rib 28a is formed. In this state, it is fitted into the guide hole 36a. As a result, the solenoid valve 25 is fixed so as not to rotate around the shaft center, so that it is possible to prevent the terminal 27a and the terminal 35a from being rubbed and worn due to vibration caused by play.

  According to the assembly structure of the embodiment described above, a plurality of substantially cylindrical solenoid valves 25 are assembled into the valve body 20 with play around the shaft center, and the terminal guide 28 protrudes in the same direction as the terminal 27a of the connector portion 27. Since the unit base 30 is assembled to the valve body 20 so as to be received by the inclined surface 36b of the guide receiver 36 of the unit base 30, it is received by the guide receiver 36 before the terminals 27a and 35a are fitted together. The terminal guide 28 can be guided along the inclined surface 36b toward the guide hole 36a to correct the posture of the solenoid valve 25. Thereby, the terminal 27a and the terminal 35a can be fitted together at the same position after facing each other. Further, even if the position where the terminal 35a is formed is shifted due to manufacturing tolerances, etc., the terminal 27a is fitted so as to follow the positional shift, so that it can be smoothly fitted as compared with the case without play. . As a result, the connector portions 27 and 35 can be connected smoothly, and the assembly of the automatic transmission 10 can be improved.

  Further, by inserting the slide guide 22 of the valve body 20 into the slide guide hole 33 of the unit base 30, the unit base 30 can be easily aligned, so that the assembling property can be further improved. Further, since the rib 28a is formed in the terminal guide 28 and is fitted into the terminal guide hole 36a in a press-fitted state, it is possible to prevent the terminals 27a and 35a from being rubbed and worn by vibration accompanying play of the solenoid valve 25. Since the cross-sectional shape in the direction crossing the inclined surface 36b of the guide receiver 36 is substantially semicircular, the terminal guide 28 can be smoothly inserted into the terminal guide hole 36a even when the solenoid valve 25 is displaced in the axial direction. Can lead.

  In the assembly structure of the embodiment, the slide guide hole 33 is formed in the unit base 30 and the slide guide 22 is formed in the valve body 20. However, the slide guide is formed in the unit base 30 and the slide guide hole is formed in the valve body 20. It is good also as what forms. Further, a plurality of slide guides and slide guide holes may be formed, each having three or more. In addition, it is good also as what does not provide such a slide guide and a slide guide hole.

  In the assembly structure of the embodiment, the terminal guide 28 is formed at a position away from the position where the terminal 27a is formed on the connector portion 27. However, the present invention is not limited to this, and the terminal guide 28 is sandwiched between the terminals 27a. It is good also as what is formed in a position. Moreover, it is not restricted to what is formed on the connector part 27, It is good also as what forms so that it may protrude directly from the electromagnetic part 25a of the solenoid valve 25. FIG.

  In the assembly structure of the embodiment, the guide hole 36a is formed so as to penetrate the frame 31. However, the guide hole 36a is not limited to this, and may be formed as a simple recess.

  In the assembly structure of the embodiment, the ribs 28a are formed in the terminal guide 28 at three positions. However, the present invention is not limited to this, and any number of sections may be formed as long as the terminal guide 28 is fitted into the guide hole 36a. It does n’t matter what you do. Moreover, it is not restricted to what forms the rib 28a in this way, It is good also as what fits in a press-fit state by the setting of a dimension. In addition, it is good also as what is just fitted, without setting it as a press-fit state in this way.

  In the assembly structure of the embodiment, the inclined surface 36b of the guide receiver 36 is formed to have a substantially semicircular cross section. However, the present invention is not limited to this, and the guide receiver 36 may be formed to have a substantially V shape. Good. Further, the angle α of the inclined surface 36b is formed so as to be within the range of 55 to 65 degrees, but the present invention is not limited to this, taking into account the assembly error due to play around the axis of the solenoid valve 25 and manufacturing tolerances. Any angle may be set as long as the terminal guide 28 can be received. Moreover, although the cross-sectional shape in the direction crossing the inclined surface of the inclined surface 36b is formed to be a substantially semicircular shape, the shape is not limited to this, and may be formed to be a substantially V-shape. The cross-sectional shape in the direction crossing the inclined surface of the inclined surface 36b is not limited to a substantially semicircular shape or a substantially V shape, and may be a flat shape.

  In the assembly structure of the embodiment, the metal plate 32 forming the bottom of the unit table 30 closes the opening 56 formed in the upper portion of the strainer 50 with the sealing material 38 interposed therebetween, and constitutes a part of the case of the strainer 50. However, the unit base may be configured as a separate body from the strainer 50.

  In the assembly structure of the embodiment, the description has been made by applying to the automatic transmission 10 mounted on the automobile. However, the assembly structure may be applied to an automatic transmission mounted on a vehicle other than the automobile, and may be mounted on equipment other than the vehicle. It may be applied to an automatic transmission.

  Here, the correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems will be described. In the embodiment, the valve body 20 corresponds to the “valve body”, the unit base 30 corresponds to the “unit base”, the AT ECU 42 and the SBWECU 44 correspond to the “electronic control unit”, and the terminal guide 28 corresponds to the “convex portion”. The guide hole 36a of the guide receiver 36 corresponds to a “concave portion”, and the inclined surface 36b of the guide receiver 36 corresponds to a “convex portion receiver”. The slide guide 22 corresponds to a “projection”, and the slide guide hole 33 corresponds to a “through hole”. Here, the “electronic control unit” is not limited to the two electronic control units of the ATECU 42 and the SBWECU 44, and two electronic control units other than the ATECU 42 and the SBWECU 44 are arranged on the unit base, or the automatic transmission 10. It is also possible to arrange one electronic control unit on the unit base so that this control is performed by a single electronic control unit. The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is the same as that of the embodiment described in the column of means for solving the problem. It is an example for specifically explaining the best mode for doing so, and does not limit the elements of the invention described in the column of means for solving the problem. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description of the column, and the examples are those of the invention described in the column of means for solving the problems. It is only a specific example.

  The best mode for carrying out the present invention has been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the gist of the present invention. Of course, it can be implemented in the form.

  The present invention can be used in the manufacturing industry of automatic transmissions.

1 is an exploded perspective view of an automatic transmission 10 in which an electronic control unit is assembled using the automatic transmission assembly structure of the present invention. It is an external appearance perspective view which shows a part of external appearance which looked at the valve body 20 from the lower surface side. 2 is an external perspective view showing a state where a solenoid valve 25 is inserted into a valve insertion portion 23 formed in the valve body 20. FIG. It is an external appearance perspective view which shows the external appearance which looked at the unit stand 30 from the lower surface side. It is an external appearance perspective view which shows the external appearance which looked at the unit stand 30 from the upper surface side. It is AA sectional drawing which shows the AA cross section in the external appearance perspective view of the unit stand 30 of FIG. It is BB sectional drawing which shows the BB cross section in the external appearance perspective view of the unit stand 30 of FIG. 2 is an external perspective view showing an external appearance before the unit base 30 is attached to the valve body 20. FIG. It is explanatory drawing which shows the mode of a change of the attitude | position of the solenoid valve 25 at the time of attaching the unit base 30 to the valve body 20. FIG. It is explanatory drawing which shows a mode after attaching the unit base 30 to the valve body 20. FIG.

Explanation of symbols

  10 automatic transmission, 12 transmission case, 20 valve body, 21 fixed base, 21a-21g bolt hole, 22 slide guide, 23 valve insertion part, 24 pin hole, 25 solenoid valve, 26 pin groove, 27 connector part, 27a terminal, 28 terminal guide, 28a rib, 29 pins, 30 unit base, 30a-30g bolt hole, 31 frame, 32 metal plate, 32a, 32b fin, 33 slide guide hole, 34 metal plate, 34a-34g bolt hole, 35 connector part , 35a terminal, 36 guide receiver, 36a terminal guide hole, 36b inclined surface, 38, 39a, 39b sealing material, 42 electronic control unit (ATECU) for automatic transmission, 44 shift-by-wire An electronic control unit (SBWECU), 46,48 screw, 50 a strainer, 50A～50i bolt holes, 52 inlet, 54 filter, 56 opening, 60 an oil pan, 62A～62i volts.

Claims (9)

An assembly structure of an automatic transmission comprising: a valve body in which a plurality of substantially cylindrical solenoid valves are incorporated; and an electronic control unit that is attached to a unit base fixed to the valve body and controls driving of the plurality of solenoid valves. Because
The solenoid valve is formed with a first connector portion which is one of a pair of male and female connectors whose fitting direction is a radial direction, and a convex portion protruding in the same direction as the first connector portion,
A second connector portion that is the other of the pair of male and female connectors that can be fitted to each of the first connector portions of the plurality of solenoid valves on a surface side fixed to the valve body on the unit base; A concave portion that can be fitted to each of the convex portions of the plurality of solenoid valves in accordance with the fitting of the pair of male and female connectors, and a convex portion receiver that has inclined surfaces rising from the edge of the concave portion on both sides of the concave portion. Form the
The plurality of solenoid valves are assembled in the valve body with play around an axis, and the unit base is assembled to the valve body by aligning at least the convex part of the solenoid valve to be received by the convex part receiver of the unit base. An assembly structure of an automatic transmission characterized by that. An assembly structure of an automatic transmission according to claim 1,
A protrusion is formed on one of the unit base or the valve body,
The positioning is performed by inserting the protrusion on the other of the unit base or the valve body, and a through hole is formed to allow the unit base to slide in the aligned state. Transmission assembly structure.   The assembly structure of an automatic transmission according to claim 1 or 2, wherein the convex portion is formed so as to be press-fit into the concave portion.   The assembly structure of an automatic transmission according to any one of claims 1 to 3, wherein the convex portion is formed in a columnar shape with a tapered end.   The assembly structure of an automatic transmission according to any one of claims 1 to 4, wherein the inclined surface of the convex portion receiver is formed so that a cross-sectional shape is substantially V-shaped or substantially semicircular.   6. The automatic transmission assembly structure according to claim 5, wherein the inclined surface of the convex portion receiver is formed so that the angle of the inclined surface is 55 to 65 degrees.   The automatic transmission according to any one of claims 1 to 6, wherein the inclined surface of the convex portion receiver is formed such that a cross-sectional shape in a direction crossing the inclined surface is substantially V-shaped or substantially semicircular. Assembly structure. An assembly structure of an automatic transmission according to any one of claims 1 to 7,
A groove is formed in the solenoid valve in a direction perpendicular to the axial direction,
Forming a pin hole communicating with the groove when the solenoid valve is incorporated in the valve body;
An assembly structure of an automatic transmission, wherein the solenoid valve is assembled to the valve body by inserting a pin penetrating the pin hole and the groove.   The automatic transmission assembly structure according to claim 1, wherein the automatic transmission is an on-vehicle automatic transmission.

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