KR101380571B1 - FPCB used for controlling auto-transmission - Google Patents

Abstract

Disclosed is a flexible circuit board for automatic transmission control coupled between a gearbox of a vehicle automatic transmission and a valve body coupled to one surface of the gearbox. The flexible circuit board for automatic transmission control is directly fixed to a plurality of sensors inserted into the gearbox and seated on the surface facing the gearbox, and transmits power and signals to the valve of the valve body on the surface facing the valve body. The valve connector is fixed directly. Therefore, the connection through the wire can be minimized, thereby reducing assembly defects due to disconnection and facilitating assembly.

Description

Flexible Circuit Board for Automatic Transmission Control {FPCB used for controlling auto-transmission}

The present invention relates to a flexible circuit board for automatic transmission control, and more particularly, to a flexible circuit board for automatic transmission control for transmitting a control signal for controlling the automatic transmission of the vehicle, and measuring the state of the automatic transmission.

The transmissions used in automobiles today can be classified into manual transmissions, automatic transmissions and continuously variable transmissions according to the shifting method.In addition to converting the rotational force of the engine and transmitting it to the driving wheel, it enables idling of the engine when the vehicle is stopped. Reverse the direction of rotation of the wheel to enable reverse.

The automatic transmission using the planetary gear set is provided with an input shaft that receives torque from the crankshaft of the engine via a torque converter.This input shaft operates a power transmission path by operating a plurality of sets of planetary gear sets and elements of the planetary gear set. The friction engagement element composed of a clutch and a brake for switching is coupled. These friction engaging elements are automatically engaged / disengaged (ON / OFF) according to the operating conditions of the vehicle and the load of the engine to supply the working fluid. The friction engaging elements are selectively engaged by the hydraulic control device composed of a plurality of solenoid valves, Torque is changed. The changed torque is transmitted to the drive wheels through the output shaft, and the hydraulic control device determines the shifting point of time by the pressure of the operating oil and operates the multi-plate clutch or multi-plate brake. There is no need for cumbersome operation of the clutch and the shift lever, and since the shift is suitable for the output of the engine, it is gradually being spread among modern people who seek convenience.

In order to properly control such an automatic transmission, a speed sensor for measuring the speed of the gears in the automatic transmission gearbox and other sensors for measuring the hydraulic pressure should be installed. The control unit (TCU) for controlling the solenoid valve of the valve body to be mounted is required. Therefore, the wiring for connecting the various sensors, the solenoid valve and the control unit (TCU) is mounted.

In the related art, although a connector and an electric wiring were used, there was a fear of mounting and disconnection during manufacturing, and some problems were solved by connecting a connector fixed to a flexible printed circuit board (FPC) and a connector fixed to a sensor and a valve.

Nevertheless, there is a risk of disconnection as well as the difficulty of wiring because the connection between the connectors by wiring.

Embodiments of the present invention have been made to solve the above problems, to provide a flexible circuit board for automatic transmission control to significantly reduce the electrical wiring to facilitate assembly and reduce the risk of disconnection.

Embodiment of the present invention, in order to solve the above problems, is coupled between the gear box of the vehicle automatic transmission, the valve body is coupled to one surface of the gear box, to the inside of the gear box on the surface facing the gear box Provides a flexible circuit board for automatic transmission control, characterized in that the plurality of sensors are inserted and seated directly fixed, the valve connector for transmitting power and signals to the valve of the valve body is directly fixed to the surface facing the valve body. .

The flexible transmission board for automatic transmission control, the band-shaped first component mounting portion; A second component mounting part spaced apart from and parallel to the first component mounting part; And a connection part connecting the first component mounting part and the second component mounting part, wherein the plurality of sensors and the valve connector are fixed to the first component mounting part and the second component mounting part.

When one of the first component mounting part and the second component mounting part protrudes longer than the other in one direction based on the connection part, the protruding length in the opposite direction is effective.

And a first extension forming part protruding toward the second component mounting part from an edge facing the second component mounting part of the first component mounting part.

The second component mounting part may further include a second extension part protruding toward the first component mounting part from an edge facing the first component mounting part.

It is preferable that the said 2nd extension formation part was formed in meander shape.

In addition, it is effective that the rigid reinforcing portion formed of a rigid reinforcing copper plate independent of the circuit pattern through which electricity flows and the fixing hole for fixing are formed therethrough.

The apparatus may further include a joint coupling part formed to couple at least one of the sensor and the valve connector. The joint coupling part may be bonded to an exposed circuit part by an insulating material when not in use.

As described above, according to the present invention, various effects including the following can be expected. However, the present invention does not necessarily achieve the following effects.

The flexible transmission board for automatic transmission control of the present invention is located between the gearbox and the valve body of the automatic transmission, and can be minimized through the wire by fixing the parts directly by minimizing the folded portion in a plane. As a result, poor assembly due to disconnection can be reduced, and assembly can be facilitated.

In addition, by varying the length of the first component mounting portion and the second component mounting portion, it is possible to minimize the waste of the original plate for the flexible circuit board manufacturing.

In addition, the first extension part and the second extension part protrude in a direction facing each other from the corners facing the first part mounting part and the second part mounting part, so that a large number of parts can be directly fixed by utilizing the wasted disc. do.

In addition, a rigid reinforcing part and a fixing hole are provided to prevent damage to the flexible circuit board.

In addition, by providing a common coupling, it can be applied to a variety of models using a single flexible circuit board, there is an advantage that can reduce the manufacturing cost.

1 is a simplified exploded perspective view showing an automatic transmission in which a flexible circuit board for automatic transmission control according to an embodiment of the present invention is installed.
2 is an exploded perspective view of the wiring apparatus of FIG.
3 is a perspective view of a state in which components are mounted on the flexible circuit board of FIG.
4 is a perspective view of a flexible circuit board with the components mounted in FIG. 3 removed;
5 is a perspective view of the flexible circuit board of FIG. 4 in a flat state before molding;
FIG. 6 is a plan view illustrating two flexible circuit boards disposed on the original plate of FIG. 5.
FIG. 7 is a perspective view when using the flexible circuit board of FIG. 5 as the flexible circuit board of another model. FIG.
8 is a cross-sectional view taken along the line VII-VII of FIG. 7.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

1 is a simplified exploded perspective view illustrating an automatic transmission in which a flexible circuit board for controlling automatic transmission (hereinafter, 'a flexible circuit board') of an embodiment of the present invention is installed.

As shown in FIG. 1, a wiring apparatus 1 including a flexible circuit board for automatic transmission control according to an embodiment of the present invention is coupled to a gearbox 2 and a surface of a gearbox 2 of an automatic transmission of a vehicle. It is installed between the valve body (3). Gear box 2 refers to the assembly of the gear that receives the driving force from the drive shaft of the engine, and transmits power to the wheel at a constant speed ratio. The valve body 3 is coupled to one surface of the gearbox 2, and is a component for use in controlling the gearbox using hydraulic pressure. The gearbox 2 and the valve body 3 are generally known and are not characteristic components of the present invention, and thus detailed description thereof will be omitted.

The wiring device 1 of the embodiment of the present invention is characterized in that it is installed between the gearbox 2 and the valve body 3.

FIG. 2 is an exploded perspective view of the wiring apparatus of FIG. 1.

The wiring apparatus 2 includes a flexible circuit board 100, a plurality of components 200 mounted on the flexible circuit board 100, and a protector 300 surrounding the flexible circuit board. First, the protector 300 has a lower protector 310 supporting a lower portion of the flexible circuit board 100 (a surface facing the valve body) and a flexible circuit board 100 according to the shape of the flexible circuit board 100. And an upper protector 320 coupled to and facing the lower protector 310.

FIG. 3 is a perspective view of a flexible circuit board in which the components are mounted on the flexible circuit board of FIG. 2, FIG. 4 is a perspective view of the flexible circuit board in which the components mounted in FIG. 3 are removed, and FIG. A perspective view of a circuit board.

As described above, the flexible circuit board 100 is coupled between the gearbox 2 of the vehicle automatic transmission and the valve body 3 coupled to one surface of the gearbox 2 and faces the gearbox. A plurality of sensors 210 which are inserted into the gear box and seated in the gear box 101 are directly fixed, and a valve connector that transmits power and a signal to a valve of the valve body on a surface facing the valve body 3 ( 220 is fixed directly.

That is, in the flexible circuit board 100 of the present invention, the parts 200 are directly fixed to the flexible circuit board 100, and these parts 200 are directly coupled to the gear box 3 or the valve body 2. The components 200 include the aforementioned sensor 210, a valve connector 220, a control unit (TCU) connection connector 230, and a valve body pressure sensor connector 240. In addition, there may be an oil temperature sensor 250 mounted directly on the flexible circuit board 100.

The sensor 210 includes an input gear speed sensor 211, an intermediate gear speed sensor 212, and an output gear speed sensor 213 inside the gearbox 2. As described above, the sensor 210 is fixed to the surface 101 facing the flexible box 100 of the flexible circuit board 100 is inserted into the gearbox. Therefore, the sensor 210 should be fixed at a position on the flexible circuit board 100 corresponding to the mounting position of the gearbox 2.

In addition, the valve connector 220 should be directly fixed to the solenoid valve (not shown) of the valve body (3). Therefore, the valve connector 220 is fixed to the surface 102 facing the valve body 3 of the flexible circuit board 100, and should be distributed and positioned according to the position of the solenoid valve.

As described above, in order to fix the sensor 210 and the valve connector 220 to the corresponding positions, the flexible circuit board formed with the date cannot be appropriately used as in the related art. Conventionally, a flexible circuit board side connector is formed on each flexible circuit board, and a separate wire is connected to a sensor and a connector formed on a gearbox or a valve body. As a result, assembly was difficult, and there was a fear of disconnection of the wire.

In addition, it is difficult to properly install the shape formed by the date, and the flexible circuit board was folded many times and then bonded. Therefore, there is a concern such as disconnection of the flexible circuit board, there were a lot of difficulties in assembly.

The flexible printed circuit board 100 according to an embodiment of the present invention is characterized in that the parts 200 fixed to the flexible printed circuit board 100 are directly fixed to the valve body or the gearbox. The valve body 3 is formed in a quadrangular plate shape, it is preferable that the flexible circuit board 100 of the present invention is also formed in a planar shape accordingly.

The flexible circuit board 100 may include a band-shaped first component mounting unit 110, a second component mounting unit 120 spaced apart from the first component mounting unit 110 in parallel, and the first component mounting unit 110. ) And a connection part 130 connecting the second component mounting part 120. That is, the flexible printed circuit board 100 is formed in a 'H' shape, and is positioned over the entire area of the valve body 3 without a separate bent portion, so that the parts 200 may be positioned at a desired position.

In addition, when any one of the first component mounting portion 110 and the second component mounting portion 120 protrudes longer than the other in one direction based on the connection portion 130, the length protruding in the opposite direction is Short is preferred. That is, as shown in FIG. 6, the length L1 protruding to the left side (based on FIG. 6) of the first component mounting unit 110 based on the connection unit 130 protrudes to the left of the second component mounting unit 120. It is formed longer than the length (L2), on the contrary the length (L3) protruding the first component mounting portion 110 to the right is formed shorter than the protruding length (L4) of the second component mounting portion (120).

By forming in this way, even if two sheets are arranged in parallel on the original plate for forming the flexible circuit board, the difference in the combined length of the two pieces of the first component mounting unit 110 and the second component mounting unit 120 is reduced, and the waste of the original board is reduced. Can be reduced. That is, while extending the length of the first component mounting portion 110 and the second component mounting portion 120 to the maximum of one sheet, two flexible circuit boards can be formed, there is an advantage that the cost can be reduced.

The first extension forming part 113 protruding toward the second component mounting part 120 from the corner 114 facing the second component mounting part 120 of the first component mounting part 110, and And a second extension part 122 protruding toward the first component mounting part 110 at an edge 121 facing the first component mounting part 110 of the second component mounting part 120.

The first extension portion 113 is formed to protrude long toward the second component mounting portion 120, the output gear speed sensor mounting portion 111 is fixed to the output gear speed sensor 213, and oil temperature sensor 250 on the surface ) Is mounted on the oil temperature sensor mounting portion (112). The output gear speed sensor mounting portion 111 and the oil temperature sensor mounting portion 112 are bent several times, as shown in FIG.

The second extension portion 122 is formed in a meander shape. That is, as shown in Figure 5, it is formed extending in a zigzag shape from side to side. The second extension forming part 122 may fold portions 123 and 124 in which directions are changed from side to side, and may extend in the longitudinal direction of the second component mounting part 120 as shown in FIG. 4.

As such, the first extension part 113 and the second extension part 122 extend in the direction in which the first part mounting part 110 and the second part mounting part 120 face each other, thereby being discarded from the disc. Space can be used to increase the mounting area of components. In addition, the second extension forming part 122 can be extended as shown in Figure 4 to extend the length, there is an advantage in that it can extend in the longitudinal direction.

In general, a circuit pattern 115 through which electricity flows is formed on a flexible circuit board. The flexible circuit board 100 of the present embodiment further includes a rigid reinforcing part 116 formed of a rigid reinforcing copper plate independent of the circuit pattern 115 through which electricity flows, and a fixing hole 117 for fixing the protector 300 is provided. It is formed through.

Rigidity reinforcement unit 116 can expect the effect of reinforcing the rigidity of the flexible circuit board, the fixing hole 117 reduces the fluidity of the flexible circuit board 100 in the protector 300 to occur in the soldering part with the parts It can reduce the damage caused by vibration.

On the other hand, the flexible transmission circuit board for automatic transmission control of the present invention preferably further comprises a common coupling portion 118 is formed to be coupled to at least one of the sensor and the valve connector. In the embodiment of the present invention, the connector 220 is coupled to the common coupling part 118 as an example, but is not limited thereto, and other components such as the sensor 210 may be coupled.

FIG. 7 is a perspective view of the flexible circuit board of another model when the flexible circuit board of FIG. 5 is used, and FIG. 8 is a cross-sectional view taken along the line VII-VII of FIG. 7.

When the common coupling part 118 of the flexible circuit board formed as shown in FIG. 5 is used in an unnecessary model, as shown in FIGS. 7 and 8, after the common coupling part 118 is bent, the common coupling part 110 and the first coupling part 118 are formed. 1 can be used by filling the insulating material 119 such as silicon between the component mounting portion 110. The common coupling part 118 insulates an insulating material by applying an insulating material to the exposed circuit part when not in use. That is, by adhering with the insulating material 119 between the bent, the circuit portion is exposed to the outside to prevent the open / short of the circuit. By providing the common coupling unit 118, it can be applied to various models using a single flexible circuit board, there is an advantage that can reduce the manufacturing cost.

As described above, the flexible transmission circuit board for automatic transmission control of the present invention is located between the gearbox and the valve body of the automatic transmission, and in a flat wide, by minimizing the folded portion to directly fix the parts, it is possible to minimize the connection through the wire have. As a result, poor assembly due to disconnection can be reduced, and assembly can be facilitated.

In addition, by varying the length of the first component mounting portion and the second component mounting portion, it is possible to minimize the waste of the original plate for the flexible circuit board manufacturing. In addition, the first extension part and the second extension part protrude in a direction facing each other from the corners facing the first part mounting part and the second part mounting part, so that a large number of parts can be directly fixed by utilizing the wasted disc. do.

In addition, a rigid reinforcing part and a fixing hole are provided to prevent damage to the flexible circuit board.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

1: gearbox 3: valve body
210: sensor 220: valve connector
100: flexible circuit board for automatic transmission control
110: first component mounting part 120: second component mounting part
130: connecting portion 113: first extension portion
122: second extension portion 116: rigid reinforcement
117: fixing hole 118: common coupling portion

Claims (9)

In the flexible transmission board for automatic transmission control coupled between the gearbox of the automatic transmission of the vehicle, and the valve body coupled to one surface of the gearbox,
A plurality of sensors that are inserted into the gear box and seated on the surface facing the gear box is directly fixed,
A valve connector for directly supplying power and a signal to a valve of the valve body is directly fixed to a surface facing the valve body.
Band-shaped first component mounting portion;
A second component mounting part spaced apart from and parallel to the first component mounting part; And
A connection part connecting the first component mounting part and the second component mounting part;
Lt; / RTI >
A plurality of the sensor and the valve connector is fixed to the first component mounting portion and the second component mounting portion,
When one of the first component mounting portion and the second component mounting portion protrudes longer than the other in one direction based on the connection portion, the length of the protruding in the opposite direction is short, the flexible circuit board for controlling the automatic transmission .
delete delete The method according to claim 1,
A first extension portion protruding toward the second component mounting part from an edge facing the second component mounting part of the first component mounting part;
Flexible transmission circuit board for automatic transmission control, characterized in that it further comprises.
The method according to claim 1,
A second extension portion protruding toward the first component mounting part from an edge facing the first component mounting part of the second component mounting part;
Flexible transmission circuit board for automatic transmission control, characterized in that it further comprises.
6. The method of claim 5,
The second extension portion,
A flexible circuit board for automatic transmission control, characterized in that formed in a meander shape.
The method according to any one of claims 1, 4, 5 or 6,
A rigid reinforcing part formed of a rigid reinforcing copper plate independent of a circuit pattern through which electricity flows;
Flexible transmission circuit board for automatic transmission control, characterized in that it further comprises.
The method according to any one of claims 1, 4, 5 or 6,
A flexible circuit board for automatic transmission control, characterized in that formed through the fixing hole for fixing.
The method according to any one of claims 1, 4, 5 or 6,
A common coupling part configured to couple at least one of the sensor and the valve connector;
Further comprising:
The common coupling part is a flexible circuit board for automatic transmission control, characterized in that the insulating material is bonded to the exposed circuit portion when not in use.

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