JP5406133B2 - Wiring device - Google Patents

Description

  The present invention relates to a technique for connecting wiring to an electromagnetic hydraulic control valve used in an automatic transmission and a technique for fixing the electromagnetic hydraulic control valve to a housing.

  For example, an automatic transmission performs a shift by selectively engaging or releasing a plurality of friction elements such as a clutch and a brake. Such a friction element is operated by hydraulic oil supplied from the output port of the electromagnetic hydraulic control valve.

  The electrohydraulic control valve is disposed, for example, in parallel in a metal housing called a valve body or the like. Since these electrohydraulic control valves are controlled by an electronic control unit, wiring from the electronic control unit is connected to each electrohydraulic control valve.

  Conventionally, a rail-like wiring cover that accommodates wiring to the electromagnetic hydraulic control valve and fixes the wiring to the housing has been proposed (see, for example, Patent Document 1). However, in the configuration disclosed in Patent Document 1, dedicated parts for fixing are used, so that the number of parts increases.

  Therefore, a structure is disclosed in which a part of the cylindrical surface of the electromagnetic hydraulic control valve is notched and inserted into the housing, and a pin is fitted into the notch to restrict the removal and rotation of the electromagnetic hydraulic control valve. (For example, refer to Patent Document 2). In patent document 2, the pin inserted in the housing is supported by the unit stand in which the electronic control unit is mounted.

JP-A-8-163748 JP 2010-78133 A

  However, in Patent Document 2, it is necessary to mold a relatively large unit base. At this time, flatness is required for the unit base to support the pins, but it is difficult to ensure accuracy in large-scale resin molding.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to realize the fixing of the electromagnetic hydraulic control valve to the housing with a simple structure in a wiring device that performs wiring to the electromagnetic hydraulic control valve. There is.

  The wiring device according to claim 1 made to achieve the above-described object includes a housing. A cylindrical hole extending in a direction along the specific surface and a pin hole corresponding to the cylindrical hole are formed on the specific surface of the housing.

  As an example, the housing 10 is shown in FIG. A cylindrical hole 11 is formed in the specific surface T of the housing 10 along the surface. A pin hole 12 corresponding to the cylindrical hole portion 11 is formed.

  The wiring device also includes a plurality of electromagnetic hydraulic control valves that supply hydraulic oil to the friction elements included in the automatic transmission. The electromagnetic hydraulic control valve has a groove on the side cylindrical surface where the pin is fitted, and is fixed by a pin inserted into the pin hole while being accommodated in the cylindrical hole.

  In the above example, the “electromagnetic hydraulic control valves” are the six linear solenoid valves 30 of A to F in FIG. As shown in FIG. 3, the pin 13 inserted into the pin hole 12 is fitted in the groove 31 in a state where the linear solenoid valve 30 is accommodated in the cylindrical hole portion 11. Thereby, the removal and rotation of the linear solenoid valve 30 are restricted.

  Furthermore, the wiring device includes a wiring cover, and the wiring cover has a rail-shaped housing portion and a fastening portion. The accommodating portion is a portion that accommodates wiring on a specific surface from the electronic control unit to the electromagnetic hydraulic control valve. The electronic control unit controls the electromagnetic hydraulic control valve. On the other hand, the fastening part is a part fastened to the fastening part of the housing in order to fasten the wiring cover to the specific surface.

  An example of the wiring cover is shown in FIG. The wiring cover 20 includes a housing portion 21 that houses wiring on a specific surface of the housing 10 and a fastening portion 22 for fastening. The electronic control unit is connected to the connector portion 25 via wiring in the protective tube 24 extending in the vertical direction.

  Here, in particular, the wiring cover has an arm portion extending from the fastening portion. The arm supports the end of the pin so as to maintain the inserted state of the pin. In the example of FIG. 1 described above, the arm portion 23 is formed to extend from the fastening portion 22.

  In other words, the wiring cover having the rail-shaped housing portion is provided with a fastening portion for fixing to the fastening portion of the housing, and the arm extending from the fastening portion is used to fix the electromagnetic hydraulic control valve. The pin was supported.

  In this way, unlike the configuration in which the pin is supported by the unit base as in Patent Document 2, for example, large-scale resin molding is not required. In particular, the effect is conspicuous if the length of the arm portion is shortened by bringing the position of the pin hole and the fastening portion of the housing as close as possible.

  From the viewpoint of shortening the arm portion, it is conceivable to bring the fastening portion of the housing close to the pin hole. This pin hole is provided corresponding to the position of the groove of the electromagnetic hydraulic control valve. Therefore, as shown in claim 2, the specific adjacent electrohydraulic control valve may be formed so that the groove is located inside both control valves in a state of being accommodated in the cavity. In order to position the groove on the inner side of both control valves, for example, it is conceivable to form the groove on the opposite side of the valve shaft in both control valves.

  In order to facilitate understanding here, an example will be given with reference to the drawings. The linear solenoid valves 30 of A and B and the linear solenoid valves 30 of D and E in FIG. Corresponds to “valve”. At this time, as can be seen from the fact that the pin hole 12 is positioned between the two control valves 30, in the linear solenoid valve 30 that is a pair, the groove is formed so as to be positioned inside.

  In this way, the positions of the two pin holes corresponding to the adjacent electrohydraulic control valves can be made closer. For example, by sharing a part of the arm portion extending from the fastening portion, a smaller wiring cover can be obtained. The effect can be further enhanced.

  In addition to making the positions of the two pin holes close, it is preferable to form a fastening part near the pin holes. For example, as shown in claim 3, a fastening part may be formed at a position corresponding to two pin holes formed in accordance with the grooves of both control valves. For example, a fastening part is formed between two pin holes. If it does in this way, the arm part extended from a fastening part can be shortened, and a pin can be supported reliably. Here, “at a position corresponding to the pin hole” means that one fastening portion is formed corresponding to the two pin holes. Therefore, it includes not only the case where the fastening portion is formed between the pin holes, but also various modes in which the length of the arm portion is shortened. As an example, a case where a fastening part is formed at a position at a similar distance from two pin holes is given.

  By the way, there are a solenoid hydraulic control valve that has a low output pressure when the hydraulic oil is not energized and a high hydraulic oil output pressure that is not energized. Therefore, as shown in claim 4, one of the specific adjacent hydraulic control valves is such that when one is not energized, the output pressure of the hydraulic oil is lower than when energized, and the other is the output pressure of the hydraulic oil when not energized. It is good also as what becomes high pressure compared with the time of electricity supply.

  In the adjacent specific electromagnetic hydraulic control valve, the groove is formed on the opposite side to the valve shaft, so two types of electromagnetic hydraulic control valves with different specifications are designated as “specific adjacent electromagnetic hydraulic control valves”. The electromagnetic hydraulic control valve can be distinguished by the groove.

  Since the arm portion of the wiring cover supports the pins, it is preferable to form the wiring cover with a metal material as shown in claim 5. If it does in this way, the rigidity of a wiring cover will become high and a pin can be supported reliably by the arm part.

  Further, since the wiring on the specific surface is housed in the housing portion of the wiring cover, as shown in claim 6, it is conceivable to form the housing portion so as to have a U-shaped cross section that opens on the housing side. In this way, since the wiring is covered from three directions by the accommodating portion, the wiring can be sufficiently protected.

  In particular, when the wiring cover is made of a metal member, it is important to prevent the wiring from being damaged by the wiring cover itself. Therefore, as shown in claim 7, it is desirable that the end portion in the cross section of the housing portion is formed to be rounded. In this way, it is possible to prevent the wiring from being damaged as much as possible.

In the case of forming the end portion to be rounded, for example, the corner portion of the end portion may be formed in an R shape. For example, as shown in FIG. In addition, as shown in claim 8, the housing portion is formed so that the end portion of the wiring cover at the part where the wiring is drawn out from the wiring cover is bent outward in a U-shape and the bent portion is rounded. It is good also as being done. For example, as shown in FIGS. 8 (a) and 8 (b).

  Moreover, as shown in claim 9, it is preferable to cover at least the surface of the accommodating portion with an insulating film. This is to prevent a short circuit of the wiring through the wiring cover. Specifically, as shown in claim 10, it can be considered that the insulating film is formed of a chemical conversion film. Further, as shown in claim 11, it is conceivable that the insulating film is composed of an inner plating film and an outer chromium coating material. In this case, since the plating film has conductivity, it is covered with a chromium-based coating material. Furthermore, as shown in claim 12, it is conceivable that the insulating film is composed of an electrodeposition coating film. Use of an electrodeposition coating film is advantageous in that it is durable.

  In addition, as shown in Claim 13, the wiring cover is good also as having a protective tube which accommodates the wiring from the specific surface to the surface on the opposite side of the specific surface which passes along the side of a housing. For example, it is embodied as the protective tube 24 in FIG. If it does in this way, it can prevent that the wiring which passes along the side of a housing contacts an AT case, for example, and is damaged.

  Moreover, since there exists a possibility that wiring may contact AT case etc. in the edge part of a protection tube, a wiring cover has a protection part which covers wiring from the outer side in the edge part of a protection tube as shown in Claim 14. It is good to be. For example, the wiring protection unit 26 and the connector protection unit 27 in FIG. If it does in this way, wiring can be protected also in the end of a protection tube.

  In Patent Document 2, a unit base for supporting the pin is mounted on the oil pan side, that is, on the lower side of the vehicle. That is, in this configuration, the electronic control unit is mounted on the lower side of the vehicle. Therefore, there is a possibility that the electronic control unit may be damaged by rock jumping or curb contact. Therefore, “the specific surface of the housing is a surface on the lower side of the vehicle, and the electronic control unit may be disposed on the opposite side of the specific surface”.

It is a perspective view which shows the wiring apparatus of embodiment. It is a perspective view which shows the structure of the specific surface of a housing. It is the GG sectional view taken on the line of FIG. It is a perspective view of the wiring cover seen from the front side. It is a perspective view of the wiring cover seen from the back side. It is a perspective view which expands and shows a protection tube. It is a perspective view which abbreviate | omits wiring and shows the front side of a wiring cover. It is a perspective view which abbreviate | omits wiring and shows the back side of a wiring cover. It is explanatory drawing of the symbols H and I part of FIG.

Hereinafter, a wiring device of an embodiment is explained based on a drawing.
As shown in FIG. 1, the wiring device 1 includes a housing 10 and a wiring cover 20. As shown in FIG. 2, six linear solenoid valves 30 are fixed to the housing 10. In addition, when distinguishing these linear solenoid valves 30, it describes using the symbol AF in FIG.

  As shown in FIG. 2, the housing 10 has six cylindrical holes 11 extending along the specific surface T along the specific surface T. The cylindrical hole portion 11 has a columnar space 11a. Specifically, six linear solenoid valves 30 of A to F are accommodated and fixed in this space 11a.

  The cylindrical hole portions 11 are formed in parallel to each other, and are formed on the specific surface T so as to be arranged in a horizontal row. Therefore, the linear solenoid valves 30 are also arranged so as to be arranged in a horizontal row parallel to each other.

  The linear solenoid valve 30 has a groove 31 (see FIG. 3) into which the pin 13 is fitted in a state where the linear solenoid valve 30 is accommodated in the cylindrical hole portion 11. The groove 31 is formed in a direction perpendicular to the valve shaft O of the linear solenoid valve 30. Thus, as shown in FIG. 3, when the pin 13 is inserted into the pin hole 12, the pin 13 is fitted into the groove 31 of the linear solenoid valve 30, and the linear solenoid valve 30 is removed (backward on the paper surface). Movement) and rotation around the valve shaft O.

  In the present embodiment, in the A linear solenoid valve 30, a groove 31 is formed on the right side of the valve shaft O when viewed from the tip side, as can be seen from FIG. On the other hand, in the B linear solenoid valve 30 adjacent to the A linear solenoid valve 30, as can be seen from FIG. 2, the pin hole 12 is formed on the left side of the valve shaft O when viewed from the front end side. That is, in the B linear solenoid valve 30, the groove 31 is formed on the left side of the valve shaft O when viewed from the distal end side.

  That is, the adjacent linear solenoid valves 30 of A and B are opposite to the valve shaft O so that the groove 31 is positioned inside the both control valves 30 in the state accommodated in the cylindrical hole portion 11. Formed on the side. Accordingly, the pin holes 12 corresponding to the A and B linear solenoid valves 30 are arranged at close positions. This configuration is the same in the linear solenoid valves 30 adjacent to D and E.

  As shown in FIG. 1, the wiring cover 20 is fastened to a specific surface T of the housing 10. The wiring cover 20 is formed of a metal material. An insulating film of an electrodeposition coating film is formed on the surface.

  The wiring cover 20 has a rail-shaped accommodation portion 21. The accommodating portion 21 accommodates wiring to the linear solenoid valve 30 on the specific surface T. Therefore, the accommodating part 21 extends in the alignment direction of the linear solenoid valves 30 so as to straddle the linear solenoid valves 30 aligned in a horizontal row. The accommodating portion 21 has a U-shaped cross section that opens on the housing 10 side at a predetermined portion, and accommodates the wiring 41 therein (see FIG. 5 and the like).

  The accommodating portion 21 passes through the vicinity of the rear end of the linear solenoid valves 30 of A to D and extends to the vicinity of the central portion of the linear solenoid valves 30 of E and F. As shown in FIGS. 4 and 5 and the like, a wiring 41 is drawn out from the housing portion 21 corresponding to the linear solenoid valve 30, and the wiring 41 is provided on the cylindrical surface of the linear solenoid valve 30. It connects with the connection part 32 (refer FIG. 2) by the exclusive connector 42. FIG.

  As described above, the wiring cover 20 is fastened to the specific surface T of the housing 10, but as shown in FIG. Part of the fastening portion 22 is disposed on both sides of the accommodating portion 21 extending in a rail shape. A boss 14 is formed in the housing 10 corresponding to the fastening portion 22. Thereby, the wiring cover 20 is screwed by the screw that passes through the hole of the fastening portion 22.

  Also, bosses 14 are formed in the peripheral portion of the pin hole 12 on the specific surface T of the housing 10 (see FIG. 2), and the wiring cover 20 has a fastening portion 22 at a position corresponding to these bosses 14. doing. Here, the wiring cover 20 has an arm portion 23 extending from the fastening portion 22 so as to correspond to the pin hole 12. Thus, when the wiring cover 20 is screwed through the fastening portion 22, the arm portion 23 covers the upper portion of the pin hole 12 and supports the pin 13 inserted into the pin hole 12.

  Further, the wiring cover 20 has a protective tube 24 for guiding the wiring to the electronic control unit disposed on the opposite side of the specific surface T as shown on the left side of FIG. The protective tube 24 extends in the vertical direction via the side of the housing 10. As shown in an enlarged view in FIG. 6, a connector portion 25 that protrudes inward (rightward in the drawing) is connected to an end portion of the protective tube 24. The connector unit 25 connects the electronic control unit.

  Since the housing 10 is disposed in an AT case (not shown), the wall of the AT case is located outside the protective tube 24 (on the left side in the drawing). Therefore, the protective tube 24 prevents the wiring 41 from coming into contact with the AT case and being damaged.

  In order to prevent the wiring 41 from coming into contact with the AT case, a wiring protection part 26 and a connector protection part 27 are provided at the end of the protection tube 24 as shown in FIG. The wiring protection part 26 protects the wiring between the protective tube 24 and the accommodating part 21 from contacting the outer AT case. On the other hand, the connector protection part 27 protects the wiring from the connector part 25 to the protection tube 24 so as not to contact the outer AT case.

  7 and 8, only the wiring cover 20 is shown. 7 is a perspective view seen from the front side of the wiring cover 20, and FIG. 8 is a perspective view seen from the back side of the wiring cover 20. As described above, the wiring 41 is taken out from the housing portion 21 of the wiring cover 20. However, the edge 21 a is not provided at the portion indicated by symbol H in FIG. It is folded back (see FIGS. 9A and 9B). Also, in the U-shaped portion indicated by the symbol I, the end of the cross section has an R shape (see FIG. 9C).

  As described above in detail, in the present embodiment, the boss 14 is formed in the peripheral portion of the pin hole 12 on the specific surface T of the housing 10 (see FIG. 2). The wiring cover 20 has a fastening portion 22 at a position corresponding to these bosses 14, and the wiring cover 20 has an arm portion 23 extending from the fastening portion 22 so as to correspond to the pin hole 12. . When the wiring cover 20 is screwed by the arm portion 23 via the fastening portion 22, the upper portion of the pin hole 12 is covered and the pin 13 inserted into the pin hole 12 is supported.

  That is, the wiring cover 20 having the rail-shaped accommodation portion 21 is provided with a fastening portion 22 for fixing to the housing 10, and the linear solenoid valve 30 is fixed by the arm portion 23 extending from the fastening portion 22. In this case, the pin 13 is supported. This eliminates the need for large resin molding. In particular, since the boss 14 is formed in a portion close to the position of the pin hole 12, the effect is conspicuous.

  In the present embodiment, the electronic control unit is disposed on the side opposite to the specific surface T on the lower side of the vehicle. Thereby, the electronic control unit can be prevented from being damaged by rock jumping or curb contact.

  Furthermore, in this embodiment, the linear solenoid valves 30 adjacent to A and B, D and E are accommodated in the cylindrical hole portion 11 so that the groove 31 is positioned inside both control valves 30. A groove 31 is formed on the opposite side to the valve shaft O. As a result, the pin holes 12 corresponding to the linear solenoid valves 30 of A and B, D and E are arranged at close positions. Thereby, by sharing a part of the arm part 23, the smaller wiring cover 20 can be configured, and the effect is further conspicuous.

  Moreover, according to this embodiment, since the wiring cover 20 is shape | molded with the metal material, the rigidity of the wiring cover 20 becomes high and the pin 13 can be reliably supported by the arm part 23. FIG.

  Furthermore, in the present embodiment, the accommodating portion 21 has a U-shaped cross section that opens to the housing 10 side at a predetermined portion. Thereby, since the wiring 41 is covered from three directions by the accommodating portion 21, the wiring 41 can be sufficiently protected.

  Further, in the present embodiment, at the portion where the wiring 41 is taken out, the edge portion 21a is folded at the portion indicated by the symbol H in FIG. 7 so that the wiring 41 is not damaged (FIGS. 9A and 9B). b)). Also, in the U-shaped portion indicated by the symbol I, the end of the cross section has an R shape (see FIG. 9C). Thereby, it is possible to prevent the wiring 41 from being damaged as much as possible.

  Furthermore, according to the present embodiment, since the insulating film is formed on the surface of the wiring cover 20, it is possible to prevent a short circuit of the wiring through the wiring cover 20. Moreover, since the electrodeposition coating film is used for the insulating film, there is little possibility that the insulating film peels off even if the contact with the wiring 41 is repeated.

  In the present embodiment, the wiring 41 connected to the connector portion 25 is disposed in the protective tube 24. Furthermore, in order to prevent the wiring 41 from coming into contact with the AT case, a wiring protection part 26 and a connector protection part 27 are provided at the end of the protection tube 24 (see FIG. 6 and the like). Thereby, it can prevent that the wiring 41 which passes along the side of the housing 10 contacts an AT case, and is damaged.

As described above, the present invention is not limited to the above-described embodiment, and can be implemented in various forms without departing from the gist thereof.
(A) In the above embodiment, the insulating film of the electrodeposition coating film is formed on the surface of the wiring cover 20, but the insulating film is not necessarily required. In addition to the insulating film of the electrodeposition coating film, an insulating film of a chemical conversion film may be formed, or an insulating film having a plating film as a lower layer and a chromium-based coating agent as an upper layer may be formed.

  (B) In the above embodiment, the specification of the linear solenoid valve 30 is not particularly referred to. However, the linear solenoid valve 30 includes a hydraulic oil whose output pressure is low when not energized, and a hydraulic oil output pressure. May become high pressure when not energized. Therefore, it is conceivable that one of the A and B linear solenoid valves 30 is “low pressure when not energized” and the other is “high pressure when not energized”. In adjacent linear solenoid valves 30 of A and B, the groove 31 is formed on the opposite side to the valve shaft O, so that two types of linear solenoid valves 30 having different specifications can be distinguished depending on the position of the groove 31. it can. The same applies to the D and E linear solenoid valves 30 adjacent to each other.

  (C) Although the above embodiment only mentions that the connection portion 32 is provided on the cylindrical surface of the linear solenoid valve 30, the connection portion 32 may be provided at a position offset in the horizontal direction of the cylindrical surface. . If it does in this way, the distance from the connection part 32 to an oil pan can be ensured. Further, when the connecting portion 32 is provided at a position offset in the horizontal direction, if the connecting portion 32 is formed on the opposite side to the valve shaft O in the two linear solenoid valves 30, different types as shown in (b) above. The linear solenoid valve 30 can be distinguished by the position of the connecting portion 32. As a result, erroneous assembly of the dedicated connector 42 can be prevented.

DESCRIPTION OF SYMBOLS 1 ... Wiring apparatus 10 ... Housing 11 ... Cylindrical hole 11a ... Space 12 ... Pin hole 13 ... Pin 14 ... Boss 20 ... Wiring cover 21 ... Accommodating Part 21a ... Edge part 22 ... Fastening part 23 ... Arm part 24 ... Protection tube 25 ... Connector part 26 ... Wiring protection part 27 ... Connector protection part 30 ... Linear solenoid valve 31 ... Groove 32 ... Connection part 41 ... Wiring 42 ... Dedicated connector O ... Valve shaft T ... Specific surface

Claims (14)

A cylindrical hole portion extending in a direction along the specific surface, and a housing in which a pin hole corresponding to the cylindrical hole portion is formed on the specific surface;
The hydraulic oil is supplied to the friction element included in the automatic transmission, and has a groove on the side cylindrical surface where the pin is fitted, and the pin hole is accommodated in the cylindrical hole. A plurality of electromagnetic hydraulic control valves fixed by the inserted pins;
A rail-shaped housing part that houses wiring on the specific surface from the electronic control unit that controls the electromagnetic hydraulic control valve to the electromagnetic hydraulic control valve, and a fastening portion of the housing for fastening to the specific surface A wiring cover having a fastening portion to be provided,
The wiring device includes an arm portion that extends from the fastening portion and supports an end portion of the pin so as to maintain a state where the pin is inserted. The wiring device according to claim 1,
The wiring device, wherein the specific adjacent electromagnetic hydraulic control valve is formed so that the groove is positioned inside both control valves in a state of being accommodated in the cylindrical hole portion. The wiring device according to claim 2,
The wiring device, wherein the fastening portion is formed at a position corresponding to two pin holes formed in accordance with the grooves of the control valves. In the wiring device according to claim 2 or 3,
One of the specific adjacent electrohydraulic control valves is such that when one is not energized, the output pressure of the hydraulic oil is low, and when the other is not energized, the output pressure of the hydraulic oil is high. A characteristic wiring device. In the wiring device according to any one of claims 1 to 4,
The wiring device, wherein the wiring cover is formed of a metal material. In the wiring device according to any one of claims 1 to 5,
The wiring device according to claim 1, wherein the housing portion is formed in a U-shaped cross section that opens on the housing side. In the wiring device according to any one of claims 1 to 6,
The wiring device according to claim 1, wherein the housing portion is formed such that an end portion in a cross section is rounded. The wiring device according to claim 7,
The accommodating portion is formed so that an end edge portion of the wiring cover at a portion where the wiring is pulled out from the wiring cover is bent outward in the U-shape, and the bent portion is rounded. A characteristic wiring device. In the wiring device according to any one of claims 1 to 8,
The wiring device according to claim 1, wherein at least a surface of the housing portion is covered with an insulating film. The wiring device according to claim 9, wherein
The wiring device, wherein the insulating film is a chemical conversion film. The wiring device according to claim 9, wherein
The wiring device, wherein the insulating film includes an inner plating film and an outer chromium coating material. The wiring device according to claim 9, wherein
The wiring device, wherein the insulating film is an electrodeposition coating film. In the wiring device according to any one of claims 1 to 12,
The wiring device according to claim 1, wherein the wiring cover includes a protective tube that accommodates wiring from the specific surface to a surface on the opposite side of the specific surface via the side of the housing. The wiring device according to claim 13, wherein
The said wiring cover has the protection part which covers the said wiring from the outer side in the edge part of the said protection tube. The wiring apparatus characterized by the above-mentioned.

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