KR102059564B1 - A actuator housing cover for a vechicle - Google Patents

Abstract

The present invention relates to a housing of an actuator for a vehicle which emits heat in an actuator and blocks inflow of moisture or foreign materials of the outside so as to sharply increase durability. A housing cover of an actuator for a vehicle, which covers a motor, a gear train connected with the motor, and an opening unit of the housing accommodating a shaft connected with the gear train, comprises: an emission unit connected with a ventilation passage connecting an inner space of a body of the housing cover and the outside so as to emit air of the inner space to the outside; and a one direction penetration member installed at an entrance of the ventilation passage of the emission unit so as to emit the inner air to the outside and blocking the inflow of the moisture and the foreign materials of the outside.

Description

A actuator housing cover for a vechicle}

The present invention relates to a housing cover of a vehicle actuator, and more particularly, to release heat inside the actuator and to block inflow of moisture or foreign matter from the outside, thereby greatly improving durability.

In general, a vehicle actuator opens and closes a valve or lever in accordance with the rotational state of a gear structure by a rotational operation of a DC motor, in order to drive the valve or lever by controlling the opening value of the opening / closing operation of controlling the flow of a desired fluid. It plays a role of controlling.

 Such an actuator is to be coupled to the microcomputer mounted on a separate printed circuit board (PCB) substrate, and an example thereof is disclosed in Korean Patent Publication No. 10-2004-0032773.

The actuator collects measurement values such as flow rate, pressure, and temperature applied according to each sensing result from various sensors installed in the flow path, and transmits the opening control data based on the collected measurement values. Receive data to control location.

In other words, the driving degree of the DC motor is determined to open or close the valve or lever.

In the case of a vehicle actuator, a housing body and a housing cover made of a resin covering the same are provided, the PCB is mounted on the housing cover, and a motor, a gear train, a shaft, and the like are disposed inside the housing.

When the motor is operated in a vehicle actuator, the driving force of the motor is transmitted to the shaft through the gear train, the shaft rotates, and a sensor disposed on the housing cover detects the amount of rotation of the shaft or gear train to measure the opening degree. .

However, there is a problem in that the gears move in the rotation process of the gear train to move away from the original position in the direction of the housing cover. And, in the past, the PCB is mounted on the housing cover, due to the size of the PCB was limited in the compactness of the actuator for the vehicle.

Conventionally, in order to couple the housing cover with the housing body), the edges are brought into contact with each other, and the screws are mainly coupled using several screws.

As described above, according to the coupling method of the housing cover using a plurality of screws, it is practically difficult to tighten each of the housing cover with a constant force along the circumference.

Therefore, there is a problem that a gap occurs between the housing cover and the housing body due to the difference in the fastening force.

In addition, there is a disadvantage in that the cost is increased due to the increase in the number of parts and the additional fastening process.

In addition, the driving body is inserted into the housing main body is also a case where the screw is released due to the continuous vibration generated in the process of transmitting power through several gears.

In addition, if high heat is generated from the inside due to overheating of the motor, friction of gears, and external high temperature transfer in summer, the viscosity of the oil decreases and various parts including the oil are shortened due to deterioration.

Conventional vehicle actuators are not provided with any means for dissipating heat from the inside to the outside, thereby causing a problem of deterioration in durability.

The present invention is to solve such a problem, and to improve the assembling of the actuator housing cover for a vehicle and to maintain a stable position of the gear train inside without an assembly object of the object.

In addition, another object of the present invention is to provide an actuator for a vehicle that is excellent in sealing function and can provide economic benefits by reducing cost.

In addition, another object of the present invention is to provide an actuator cover for a vehicle that can release heat generated from the inside and block the inflow of moisture or foreign substances from the outside to greatly improve durability.

In order to achieve the above object, the present invention provides a housing cover of an actuator for a vehicle that covers an opening of a housing in which a gear train connected to a motor and a motor and a shaft connected to the gear train are accommodated, wherein the housing cover is a portion of the housing cover. A discharge part connected to a ventilation flow path connecting the outside from the body internal space to discharge the air in the internal space to the outside; installed at the inlet of the ventilation flow path to discharge the internal air to the outside, and external moisture and foreign matter inflow It provides a housing cover of a vehicle actuator, characterized in that it comprises a unidirectional transmission member for blocking.

The discharge unit may include an installation groove provided in the housing cover and a connection space connecting the installation groove and the ventilation passage.

The one-way transmission member is characterized in that it is installed in the installation groove of the discharge portion.

The discharge part includes a support part protruding into one side of the housing cover, and a support part provided in the support part; It is provided on the outer peripheral surface of the support portion, and includes a guide space formed in the support portion, the guide space is characterized in that it is in communication with the ventilation passage.

The unidirectional transmissive member is disposed above the base of the discharge unit and is installed to cover the guide space.

The unidirectional transmission member is characterized in that the gore-tex is included.

The inner cover of the housing cover is provided with hall sensor support parts on both sides of the electronic component module including a Hall sensor for detecting the rotation of the shaft and a circuit chip connected thereto to process a signal, and one side of the electronic component module includes a gear train. Characterized in that a movement limiting portion for limiting the positional movement of the power transmission gear constituting.

A first fixing part fixed to the hall sensor support part by a fixing part, the fixing part being coupled to the hall sensor support part or connected to the hall sensor support part in a hot stamping manner to fix the hall sensor to the housing cover; A second fixing part coupled to the circuit chip support extending from the circuit chip or connected to the circuit chip support in a hot stamping manner to fix the circuit chip to the housing cover; It characterized in that it comprises a plurality of line fixing portion for fixing each of the plurality of electricity supply lines connected to the circuit chip.

 According to the present invention it is induced to be discharged to the outside when the heat generated inside the actuator through the air flow passage of the discharge portion provided in the vehicle actuator housing cover, and also to prevent the inflow of foreign moisture or foreign matter, thereby greatly improving the durability of the product Can be improved.

In addition, by combining the housing cover and the housing by fusion using a laser, the installation of the sealing member is unnecessary, and the cost is reduced by reducing the number of parts and the number of assembly processes. There is no fear of infiltration of foreign substances due to gaps, which improves the reliability and productability of the product.

The position of the gear train can be stably maintained by preventing the power transmission gear constituting the gear train from being separated from the original track.

In addition, by arranging a circuit chip that is relatively smaller than a PCB and capable of performing the function, a structure for fixing the hall sensor support part and a structure for fixing the circuit chip support part are placed next to each other. Can be stably maintained, and the position can be clearly specified by providing a groove for designating their positions.

In addition, a line fixing part is provided to stably maintain the position of the energizing lines connected to the circuit chip.

1 is an exploded perspective view of an actuator according to the present invention.
Figure 2 is a partially cutaway cross-sectional view showing the disassembled body and cover of the actuator according to the present invention.
Figure 3a is a perspective view of a vehicle actuator housing cover according to the present invention.
Figure 3b is a plan sectional view inside the vehicle actuator housing according to the present invention.
Figure 4 is a bottom perspective view of the vehicle actuator housing body according to the present invention.
5 is a plan view of a vehicle actuator housing cover according to the present invention.
6A is a perspective view of an electronic component module installed in a vehicle actuator housing cover according to the present invention.
6B is a side cross-sectional view of an electronic component module installed in a vehicle actuator housing cover according to the present invention.
6C is a front perspective view and a front view of an electronic component module installed in a vehicle actuator housing cover according to the present invention.
FIG. 7 is a cross-sectional view taken along line BB of FIG. 5.
8 is an exploded perspective view of the housing body in a state in which parts are disposed in the vehicle actuator housing cover according to the present invention.
9 is a front view showing in major parts the assembled state of the vehicle actuator according to the present invention.
10 is a partially enlarged cross-sectional view illustrating a state in which a housing cover and a body of the vehicle actuator according to the present invention are assembled.
11 is an enlarged cross-sectional view of the main portion of FIG. 9.
12 is a plan view showing another embodiment of the discharge unit provided in the housing cover of the present invention.
FIG. 13 is an enlarged cross-sectional view taken along line CC of FIG. 12.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated and described in the drawings.

However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be.

On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings, and the same or corresponding components will be given the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted.

As shown in FIGS. 1 and 2, a typical vehicle actuator includes a housing main body 100 and a housing cover 200 covering one surface of the housing main body 100.

The housing main body 100 is provided with a motor mounting unit 110 in which the driving motor 101 is inserted and mounted, and a shaft mounting unit 120 in which the shaft 121 is mounted.

A support rod 130b is provided on one surface of the housing main body 100, and the support rod 130b extends by a predetermined length in the direction of the housing cover 200.

The support rod 130b is provided between the motor mounting unit 110 and the shaft mounting unit 120, and a power connecting the pinion gear 101a provided to the drive motor 101 and the partial tooth gear 102c fitted to the shaft. The transmission gear 102b is inserted into the support rod.

The support rod 130b may be a rotation center of the power transmission gear 102b.

The power transmission gear 102b and the partial toothed gear 102c here constitute a gear train.

An inner surface of the housing cover 200 is provided with an insertion hole through which an end of the supporting rod 130a is inserted and supported, and the position of the insertion hole corresponds to the position of the supporting rod.

An inner surface of the housing cover 200 is provided with an electronic component module 500 including a Hall sensor 501 for detecting rotation of the shaft 121 and a circuit chip 502 connected thereto to process a signal. The circuit chip 502 replaces the existing PCB.

On the other hand, the electronic component module 500 is provided with a movement limiting unit 220 for limiting the movement of the power transmission gear 102b constituting the gear train. When the housing 100 is covered by the housing cover 200, the movement limiting unit 220 protrudes toward the surface of the power transmission gear 102b, and the power transmission gear 102b rotates and then moves in the direction of the housing cover 200. When it moves to the contact surface of the power transmission gear (102b) serves to prevent the movement from further progress.

As shown in FIGS. 3A and 3B, when the housing cover 200 covers the housing 100, the movement limiting unit 220 extends from the inner surface of the housing cover 200 so that the end thereof is the power transmission gear 102b. Direction).

However, it is preferable to be spaced apart at certain intervals, which induces smooth rotation of the power transmission gear 102b, but if it moves in the direction of the movement limiting portion 220 slightly, it collides with the movement limiting portion 220 and is returned to its original position by the repulsive force. To return.

The movement limiting unit 200 may be disposed at a predetermined interval from the rotation center of the power transmission gear 102b. In addition, the movement limiting unit 200 is disposed at the rear of the extension part 221 and the extension part 221 which protrudes in the gear train direction from the inner surface of the housing cover 100 to reinforce the strength of the extension part 221. Strength reinforcement 222 is included.

The extension portion 221 is preferably provided with an arc-shaped flat cross section so that the inner surface and the outer surface are curved. This is to prevent the deformation while maximizing the contact area or length with the power transmission gear 102b at the end as much as possible, and maximizing the efficiency of limiting the movement.

Strength reinforcing portion 222 is disposed in the vertical direction in the center of the rear of the extension portion 221 connects the rear surface of the extension portion 221 and the inner surface of the housing cover 200, the side cross-sectional shape is provided in a triangular form. . However, the shape of the side cross section is not limited to the triangle and various shapes are possible.

As shown in FIG. 5, the Hall sensor 501 and the circuit chip 502 are mounted on the inner surface of the housing, and the connection line 503 for transmitting and receiving signals and energizing between the Hall sensor 501 and the circuit chip 502. ) Is prepared

Hall sensor support parts 501a are provided at both sides of the hall sensor 501, and the hall sensor support part 501a is coupled to the first fixing part 511 or the first fixing part 511 by a hot stamping method. ) Can be fused and connected.

In addition, circuit chip support portions 502a are provided at both sides of the circuit chip 502, and the circuit chip support portions 502a are coupled to the second fixing portion 512 or the second fixing portion by a hot stamping method. 512 may be fused and connected.

On the other hand, a groove in which the hall sensor 501, the circuit chip 502, and the connection line 503 can be placed is formed on the inner surface or the bottom of the housing cover 200, and a step is formed around the groove to form the hall sensor. The region where the 501, the circuit chip 502, and the connection line 503 are arranged may be clearly distinguished from other regions.

In the circuit chip 502, a plurality of energization lines 504, 505, and 506 are connected to extend outward. The energization line includes a sensor output line 504, a power input line 505, and a ground line 506. The sensor output line 504 is a line for outputting the magnetic force value sensed by the Hall sensor 501 as a power value (volt), and the power input line 505 is a line for inputting a basic power source (for example, 5V) and is grounded. Line 506 is a line that performs ground.

In FIG. 6A, the power input line 505 is in the middle, and the sensor output line 504 and the ground line 506 are disposed on both sides thereof, but the position thereof may be changed without being limited thereto.

The sensor output line 504, the power input line 505, and the ground line 506 may be fixed in position by line fixing units 514, 515, and 516, respectively.

A bent portion 505a bent in a “∩” shape is disposed on the power input line 505, and the bent portion 505a is supported by the bent portion supporter 518 to fix and define a position thereof.

Here, the bent part 505a is provided between the end of the power input line 505 and the circuit chip 502, and the line fixing part 515 supporting the power input line 505 so that the bent part support part 518 also corresponds thereto. ) And the circuit chip 502.

The sensor output line 504, the power input line 505, and the ground line 506 are preferably fixed to the line fixing portions 514, 515, and 516 by resistance welding.

On the other hand, each of the line fixing portion 514, 515, 516 is preferably arranged in a zigzag manner rather than arranged side by side in order to avoid interference of the position. That is, as shown in the figure, the line fixing portion 514 supporting the sensor output line 504 and the line fixing portion 516 supporting the ground line 506 are arranged in the same column, and the power input line 505 The fixing line fixing portion 515 may be disposed ahead or behind them.

As shown in FIGS. 6A and 6B, the bent portion supporter 518 supporting the bent portion 505a is disposed in the lower space of the bent portion 505a and is caught by the lower surface of the bent portion 505a. ) And a locking wall 518a which is disposed to be spaced apart from each other on both sides of the locking portion 518a, and the bending portion 505a is disposed therebetween to limit the left and right movement.

The bent support 518 is limited to the movement of the bent portion 505a from side to side back and forth can be clearly specified or defined, the arrangement can also be implemented stably.

As shown in FIG. 6C, the sensor output line 504, the power input line 505, and the ground line 506 are fixed to the line fixing portions 514, 515, and 516 by resistance welding, respectively. The line fixing parts 514, 515, and 516 are provided with a wall fixing wall and insertion grooves 514a, 515a, and 516a cut in a V or U shape on the fixing wall.

Preferably, the insertion grooves 514a, 515a, and 516a become narrower in width from the top to the bottom thereof. The sensor output line 504 and the power supply are located in the lower region of the insertion grooves 514a, 515a, and 516a. It is preferable that the input line 505 and the ground line 506 are sandwiched and fixed, and fused to the surfaces of the insertion grooves 514a, 515a, and 516a by resistance welding in this state.

However, it is a matter of course that the fitting grooves 514a, 515a, and 516a may be coupled to each other by forcing fitting rather than resistance welding.

As a coupling means of the housing cover 200 and the housing body 100 constituting the vehicle actuator of the present invention it is completely fastened by a fusion method using a transmissive laser.

That is, the inner cover of the housing cover 200 is provided with a receiving loop 240 in the form of a closed loop, and as shown in FIG. 4, the closing loop of the housing cover 200 has a shape corresponding to the receiving groove 240. The protruding edge 140 is integrally protruded.

Therefore, in the state in which the above-described various components are mounted on the housing main body 100 and the housing cover 200, the protruding edge 140 is temporarily assembled to the receiving groove 240, and then the transmissive laser is along the protruding edge 140. When irradiated, the housing main body 100 and the housing cover 200 are coupled in such a manner that the contact portion of the protruding edge 140 and the accommodation groove 240 formed of synthetic resin is melted and fused.

At this time, high heat is generated in the inner space of the housing cover 200 and the housing main body 100 constituting the actuator.

In addition, even when the actuator is mounted and used in an automobile, for example, high heat may be generated internally due to overheating of the motor or friction transfer of gears. In the present invention, the vent flow path 310 of the discharge part 300 may be formed. Through it, the heat from the inside will be released directly to the outside.

Here, the housing grooves 240 and the protruding edges 140 provided in the housing cover 200 and the housing body 100 have their installation positions changed.

In addition, in the process of assembling the housing main body 100 and the housing cover 200, various parts including the receiving groove 240 and the protruding edge 140 are positioned on the housing cover 200 to maintain an accurate assembly position. 231, the positioning grooves 131 are preferably dug into the housing body 100 at a position corresponding thereto.

The housing cover 200, the housing body 100, and the protruding edge 140 do not necessarily have the same size and shape, and as shown in FIG. 10, the protruding edge 140, the housing cover 200, and the housing body ( Even if fusion is performed only at one surface where 100 is contacted, the fastening state of the housing main body 100 and the housing cover 200 is excellent.

As such, the housing cover 200 and the housing main body 100 are coupled to each other using a transmissive laser, and thus a component such as a sealing member or a screw is unnecessary.

In addition, there is no fear of gaps caused by poor assembly during the fastening process, it is possible to maintain the fastening state semi-permanently.

On the other hand, the internal heat is discharged to the outside on the inlet side of the discharge portion 300, the one-way transmitting member 400 is provided to block the ingress of foreign moisture and foreign matter.

In one embodiment, the discharge part 300 has a partition-type support part 301 and a support part 301 which are formed to protrude into one side of the housing cover 200, as shown in FIGS. 10 and 11. The installation groove 302 formed in the shape of a space having a relatively large volume, and the connection space 303 having a smaller volume than the installation groove 302 to excavate in a single layer (step), and ventilated in the connection space 303 The flow path 310 is connected to allow the inside and the outside of the actuator to communicate with each other.

In this case, the one-way transmissive member 400 may be attached and fixed using an adhesive mainly along the outer edge of the installation groove 302 to prevent separation from the installation groove 302 of the discharge portion 300.

In addition, the one-way transmission member 400 may be installed by inserting a groove by digging around the installation groove 302.

In addition, the unidirectional transmission member 400 may be installed in the position of the installation groove 302 using a coupling member such as a small screw or clip.

In addition, it is noted that the one-way transmission member 400 can be coupled to the installation groove 302 in a variety of ways including an interference fit method.

As another embodiment of the discharge portion 300 as shown in Figure 12 and 13 around the support portion 304 which is located in the center of the support portion 301 protruding into any one side of the housing cover 200 The guide space 305 may be formed, and the guide space 305 may be configured to be connected to the air flow passages 310 that are bored from the outside.

At this time, the one-way transmissive member 400 is installed to cover the guide space 305 in the state fixed in position by the adhesive mainly on the base portion 304 of the discharge portion.

According to this embodiment, the internal heat can be discharged to the outside through the guide space 305 and the ventilation passage 310.

Here, the unidirectional transmission member 400 is found to include all members having a function of blocking moisture while permeating air in one direction, such as Gore-tex.

Gore-tex is a very thin film that is made by heating a large number of Teflon-based resins that are resistant to heat and chemicals to puncture a myriad of small holes. Very little air or water vapor has the ability to pass through.

Therefore, the internal heat can be discharged to the outside while blocking moisture or foreign matter from flowing outside the actuator.

While the present invention has been described with reference to the embodiments shown in the drawings, it is only for the purpose of illustrating the invention, and those skilled in the art to which the present invention pertains various modifications or equivalents from the detailed description of the invention. It will be appreciated that one embodiment is possible.

Therefore, the true scope of the present invention should be determined by the technical spirit of the claims.

100-housing 101-drive motor
102a, 102b-Drive Gear 140-Protruding Edge
200-housing cover 210-sealing member mounting groove
220-Mobility Restrictor 240-Receiving Groove
300-outlet 310-vent channel
400-One-way through element 501-Hall sensor
502-Circuit chip 503-Connection line

Claims (3)

A housing cover of a vehicle actuator covering an opening of a housing containing a motor and a gear train connected to the motor and a shaft connected to the gear train,
The housing cover is connected to the air flow passage for connecting the outer side from the inner space of the body of the housing cover for discharging the air of the inner space to the outside;
It is installed at the inlet of the vent flow path is discharged to the outside air, but includes a unidirectional permeable member to block external moisture and foreign matter inflow,
The discharge portion and the support protruding into any one side of the housing cover,
A support portion provided inside the support portion;
It is provided on the outer peripheral surface of the support portion, and includes a guide space formed inside the support, the guide space is a housing cover of the vehicle actuator, characterized in that in communication with the air passage. The method of claim 1,
The unidirectional transmission member is disposed above the base of the discharge portion
A housing cover of an actuator for a vehicle, characterized in that the guide space is installed to be covered. The method of claim 1,
Hall sensor support parts are provided on both sides of the electronic component module including a hall sensor detecting a rotation of the shaft and a circuit chip connected thereto to process a signal on an inner surface of the housing cover,
The Hall sensor support is fixed by the fixing portion,
A fixing part coupled to the hall sensor support part or connected to the hall sensor support part in a hot stamping manner to fix the hall sensor to the housing cover;
A second fixing part coupled to the circuit chip support extending from the circuit chip or connected to the circuit chip support in a hot stamping manner to fix the circuit chip to the housing cover;
And a plurality of line fixing parts for fixing a plurality of electricity supply lines connected to the circuit chip, respectively.

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