KR20210009237A - Parking brake apparatus for vehicle - Google Patents

Abstract

The present invention is to provide a parking brake apparatus for a vehicle in which a load can be uniformly transmitted to a brake pad due to a load transmission unit. According to the present invention, a parking brake apparatus comprises: a pair of pressing units receiving power from a driving unit and pressing a brake pad; a load transmission unit installed between the pair of pressing units and connected to the pair of pressing units, respectively, and transmitting a pressing load of any one of the pair of pressing units to the other pressing unit; and a mounting bracket for fixing at least one of the pressing unit and the load transmission unit in a mounting case.

Description

Vehicle parking brake system {PARKING BRAKE APPARATUS FOR VEHICLE}

The present invention relates to a parking brake device for a vehicle, and more particularly, to a parking brake device for a vehicle capable of uniformly transmitting a load to a brake pad.

In general, an actuator of an electronic parking brake of a vehicle is composed of a motor and a power transmission device for operating a friction pad installed in a caliper of a disc brake device during parking.

When the driver presses the parking brake switch, the rotational force of the motor of the actuator is transmitted to the input shaft of the caliper through a power transmission device such as a reduction device. Through the rotation of the input shaft, the pressure full-speed sleeve advances, and the piston and caliper housing accommodating it move toward each other by the advancement of the pressure connection sleeve, so that the two friction pads mounted on the piston and caliper housing are located on both sides of the disk. To restrain rotation.

When a plurality of pistons are provided and a driving force is transmitted from a single actuator, loads are unevenly transmitted to the plurality of pistons, and in this case, there is a problem in that uneven wear is generated and braking performance is deteriorated.

The present invention has been conceived to improve the above problems, and an object thereof is to provide a vehicle parking brake device capable of uniformly transmitting a load to a brake pad due to a load transmission unit.

A vehicle parking brake apparatus according to the present invention includes: a pair of pressing units receiving power from a driving unit and pressing a brake pad; A load transmission unit installed between the pair of pressing units and connected to each of the pair of pressing units, and transmitting a pressing load of any one of the pair of pressing units to the other pressing unit; And a mounting bracket for fixing at least one of the pressing part and the load transmission part in the mounting case.

In the present invention, each of the pair of pressing parts may include a sun gear part rotated by receiving power from the driving part; A planetary gear engaged with the sun gear and rotated; A carrier part coupled to the planetary gear part; And a piston part connected to the carrier part and receiving rotational power from the planetary gear part and moving toward the brake pad to press the brake pad.

In the present invention, the drive unit, a motor unit for generating power by receiving power from the outside; And a power transmission unit that is rotated by the driving of the motor unit and transmits a rotational force toward the sun gear unit.

In the present invention, the mounting bracket is characterized in that the drive worm gear mounting portion is provided on the mounting bracket body, and the drive worm gear of the motor unit is mounted to the drive worm gear mounting portion and fixed in position.

In the present invention, the drive worm gear mounting portion is characterized in that it has a mounting hole to insert and mount the drive worm gear.

In the present invention, the mounting bracket is characterized in that it has a power transmission unit mounting portion is mounted on the mounting bracket body and the power transmission unit is fixed in position.

In the present invention, the power transmission unit, a transmission worm wheel disposed at the center of the transmission shaft, coupled to the motor unit to receive power from the motor unit; And a transmission worm gear disposed on both sides of the transmission shaft and transmitting the rotational force of the transmission worm wheel toward the sun gear unit.

In the present invention, the power transmission unit mounting portion is installed on both sides of the mounting bracket body, and characterized in that it comprises a support bar for supporting both sides of the transmission shaft.

In the present invention, the support bar, a first support bar for supporting one side of the transmission shaft; And a second support bar disposed to face the first support bar and supporting the other side of the transmission shaft.

In the present invention, the first support bar has a first separation prevention protrusion protruding toward the second support bar, and the second support bar is formed to protrude toward the first support bar, so that the first support bar and the It characterized in that it comprises a second separation prevention protrusion for preventing the separation of the transmission shaft mounted between the second support bar.

In the present invention, at least one of the first support bar and the second support bar is characterized in that elastic deformation is possible.

In the present invention, the transmission shaft is characterized in that it includes a plurality of movement preventing portions disposed outside the first support bar and the second support bar, respectively.

In the present invention, the mounting bracket is characterized in that it has a sun gear mounting portion mounted on the mounting bracket body and fixed in position by the sun gear portion.

In the present invention, the sun gear mounting portion is characterized in that it includes a mounting hole to insert and mount the sun gear portion.

In the present invention, the power transmission unit is characterized in that transmitting power to the sun gear unit through the connection gear unit.

In the present invention, the connection gear unit includes a connection gear body coupled to the sun gear unit; And a connection worm wheel formed on an outer circumferential surface of the connection gear body and engaged with the power transmission unit.

In the present invention, the mounting bracket is characterized in that it has a sun gear mounting portion that is fixed to the position by mounting the connection gear on the mounting bracket body.

In the present invention, the sun gear mounting portion is characterized in that it has a mounting hole so that the connection gear is inserted and mounted.

In the present invention, the load transmission unit, a pair of ring gear units; And one or more transmission gear units disposed between a pair of the ring gear units and engaged with the ring gear units.

In the present invention, the mounting bracket is characterized in that it has a transmission gear unit mounting portion is mounted on the mounting bracket body and the transmission gear unit is fixed in position.

In the present invention, the transmission gear unit mounting portion is a vehicle parking brake device, characterized in that provided with a mounting protrusion that is fitted to the transmission gear unit.

In the vehicle parking brake apparatus according to the present invention, when a pressure load is biased to any one of a plurality of pressurization units due to the load transmission unit, it is transmitted to the remaining pressurization unit so that the pressurization unit pressurizes the brake pad with a uniform load. .

1 is a perspective view showing a vehicle parking brake device according to an embodiment of the present invention.
2 is a partial perspective view showing a parking brake device for a vehicle according to an embodiment of the present invention.
3 is a partial exploded view showing a vehicle parking brake apparatus according to an embodiment of the present invention.
4 is a front view showing a vehicle parking brake device according to an embodiment of the present invention.
5 to 7 are state diagrams showing a driving state of the vehicle parking brake apparatus according to an embodiment of the present invention.
8 is an exploded view of a vehicle parking brake device according to an embodiment of the present invention.
9 is a view showing a coupling state of a mounting bracket, a driving unit, and a pressing unit of the vehicle parking brake device according to an embodiment of the present invention.

Hereinafter, an embodiment of a vehicle parking brake apparatus according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention and may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

1 is a perspective view showing a vehicle parking brake apparatus according to an embodiment of the present invention. 2 is a partial perspective view showing a parking brake device for a vehicle according to an embodiment of the present invention. 3 is a partial exploded view showing a parking brake device for a vehicle according to an embodiment of the present invention. 4 is a front view showing a vehicle parking brake apparatus according to an embodiment of the present invention. 5 to 7 are state diagrams showing a driving state of the vehicle parking brake apparatus according to an embodiment of the present invention. 8 is an exploded view of a vehicle parking brake device according to an embodiment of the present invention. 9 is a view showing a coupling state of a mounting bracket, a driving unit, and a pressing unit of the vehicle parking brake apparatus according to an embodiment of the present invention.

1 to 5, a vehicle parking brake device 1 according to an embodiment of the present invention includes a driving unit 50, a pressing unit 100 and 200, and a load transmission unit 300.

The driving unit 50 includes a motor unit 60 that receives power from the outside and generates power. The motor unit 60 includes a motor body 61 from which power is generated, and a drive gear 62 that is rotated by the motor body 61.

In this embodiment, the drive gear 62 is formed in a worm gear shape, but can be replaced with another gear shape, etc., if power can be transmitted to the pressing units 100 and 200 or to the power transmission unit 70.

The driving unit 50 may further include a power transmission unit 70. That is, the motor unit 60 of the driving unit 50 may directly transmit the generated power to the pressing units 100 and 200, or indirectly transmit the power generated through the power transmission unit 70 to the pressing unit 100, 200).

The power transmission unit 70 transmits the power provided from the motor unit 60 to the pressing units 100 and 200.

The power transmission unit 70 includes a transmission shaft 71, a transmission worm wheel 72, and a transmission worm gear 73. The transmission worm wheel 72 receives power from the drive gear 62 while being engaged with the drive gear 62.

Transmission worm wheels 72 are disposed at the center of the transmission shaft 71, and transmission worm gears 73 are disposed at both ends. Therefore, when the transmission worm wheel 72 is rotated by the drive gear 62, the transmission worm gear 73 connected to the transmission worm wheel 72 is interlocked and rotated.

The pressing parts 100 and 200 according to an embodiment of the present invention are installed inside the caliper housing 10 and receive power from the driving unit 50 to generate contact friction with a disk (not shown). Press (20).

A plurality of pressing parts 100 and 200 are provided, and a plurality of pressing parts 100 and 200 are arranged side by side. The pressing parts 100 and 200 are installed symmetrically to the left and right (based on FIG. 4) with respect to the central part of the brake pad 20.

The pressing units 100 and 200 receive power from the driving unit 50 and press the brake pad 20 with the same pressing load. The brake pad 20 is moved toward the disk by this pressing force, and a braking force is generated due to friction between the brake pad 20 and the disk.

The pressurization parts 100 and 200 according to an embodiment of the present invention include sun gear parts 110 and 210, connection gear parts 120 and 220, planetary gear parts 130 and 230, carrier parts 150 and 250, and piston parts. (170, 270).

Meanwhile, in FIGS. 4 to 7, the connecting gear bodies 121 and 221 of the connecting gear units 120 and 220 are omitted for convenience of description.

The connection gear units 120 and 220 include connection gear bodies 121 and 221, connection worm wheels 122 and 222, and connection inserts 123 and 223.

The connection gear units 120 and 220 are provided with connection worm wheels 122 and 222 on their outer circumferential surfaces so as to mesh with the respective transmission worm gears 73 of the driving unit 50, specifically the power transmission unit 70.

As a result, the power generated from the motor unit 60 is transmitted to the connection worm wheels 122 and 222 through the power transmission unit 70. That is, the power of the driving unit 50 is transmitted to the connecting gear units 120 and 220 to rotate the connecting gear units 120 and 220. The connection worm wheels 122 and 222 are formed in a worm wheel shape.

The connection inserts 123 and 223 are formed in the inner space of the connection worm wheels 122 and 222. That is, the connection worm wheel (122, 222) is formed on the outside of the wall formed along the outer circumferential surface of the connection gear body (121, 221), the connection inserts (123, 223) is the connection worm wheel (122, 222) is formed. It is formed in the inner space of the wall.

A ring gear part 310, specifically, a ring gear inner part 311 is inserted into the connection inserting parts 123 and 223. The connection insertion portions 123 and 223 are formed in a concave groove shape.

The sun gear units 110 and 210 are rotated by receiving power from the driving unit 50. According to the present embodiment, the sun gear units 110 and 210 are coupled to the connection gear units 120 and 220, and the sun gear units 110 and 210 are connected to the driving unit 50 and are energetically connected to the connecting gear units 120 and 220. ) Can be rotated.

The sun gear units 110 and 210 include sun gears 111 and 211 and sun gear connection bodies 112 and 212.

The sun gear connection bodies 112 and 212 are coupled to the connection gear bodies 121 and 221. The sun gears 111 and 211 are formed in the center of the sun gear connection bodies 112 and 212, and are formed in a gear shape on the outer circumferential surface so as to mesh with the planetary gears 130 and 230.

The sun gear parts 110 and 210 are concentric with the rotation center of the connection gear parts 120 and 220. Therefore, when power is transmitted to the connection gear units 120 and 220 by the power transmission unit 70, the connection gear units 120 and 220 and the sun gear units 110 and 210 rotate on the same rotation axis.

The sun gear units 110 and 210 are disposed inside the inner circumferential surfaces of the connection gear units 120 and 220 in which the connection inserts 123 and 223 are formed.

The sun gear units 110 and 210 may be integrally formed with the connection gear units 120 and 220. Alternatively, the sun gear units 110 and 210 are formed as separate objects from the connection gear units 120 and 220, and may be integrated by combining them.

When the sun gear units 110 and 210 are integrally formed with or are integrated with the connection gear units 120 and 220, when the connecting gear units 120 and 220 driven by receiving power from the power transmission unit 70 rotate, the sun gear unit ( 110, 210) are also rotated together.

The sun gears 111 and 211 are disposed inside the planetary gears 130 and 230 provided with a plurality of them. The planetary gear units 130 and 230 rotate and rotate while being engaged with the sun gears 111 and 211.

The planetary gear units 130 and 230 are provided with a plurality of planetary gears 131 and 231. In the present embodiment, the number of planetary gears 131 and 231 is exemplified as four, but the number of planetary gears 131 and 231 is not limited thereto.

The plurality of planetary gears 131 and 231 are arranged at an equal angle with respect to the rotation center of the sun gears 111 and 211. The plurality of planetary gears 131 and 231 rotate and/or revolve when the sun gears 111 and 211 rotate while being engaged with the sun gears 111 and 211.

The planetary gear units 130 and 230 are coupled to the carrier units 150 and 250. When the plurality of planetary gears 131 and 231 revolve around the sun gears 111 and 211, the carrier units 150 and 250 are also rotated in a clockwise or counterclockwise direction (see FIG. 4).

As the carrier parts 150 and 250 rotate, the piston parts 170 and 270 move toward the brake pad 20 and press the brake pad 20.

The carrier parts 150 and 250 include carrier bodies 151 and 251, carrier rotation shafts 152 and 252, and carrier connection parts 153 and 253.

The carrier rotation shafts 152 and 252 are formed to protrude from the carrier bodies 151 and 251 toward the planetary gears 130 and 230.

A plurality of carrier rotation shafts 152 and 252 are provided equal to the number of planetary gear units 130 and 230 and are coupled through the planetary gear units 130 and 230. Accordingly, the planetary gear units 130 and 230 are rotated on the carrier rotation shafts 152 and 252 and can rotate.

The carrier connection parts 153 and 253 are formed on the inner circumferential surfaces of the carrier bodies 151 and 251 and are connected to the piston connection parts 173 and 273 of the piston parts 170 and 270.

In this embodiment, the carrier connection portions 153 and 253 have a concave groove shape, and the piston connection portions 173 and 273 have a protrusion shape inserted into the carrier connection portions 153 and 253.

On the contrary, the piston connecting portions 173 and 273 may have a concave groove shape, and the carrier connecting portions 153 and 253 may have a protruding protrusion shape inserted into the piston connecting portions 173 and 273.

The carrier connection parts 153 and 253 and the piston connection parts 173 and 273 may be spline-coupled to each other. Of course, the carrier units 150 and 250 and the piston units 170 and 270 may be coupled in a manner other than spline coupling, for example, screw coupling.

The piston parts 170 and 270 are connected to the carrier parts 150 and 250. The piston parts 170 and 270 are rotated together as the carrier parts 150 and 250 are rotated.

The piston parts 170 and 270 include piston bodies 171 and 271, piston shafts 172 and 272, and piston connection parts 173 and 273.

The piston bodies 171 and 271 have a hollow interior and are disposed to be in contact with the brake pad 20 by movement. The piston bodies 171 and 271 may be formed in a cylindrical shape.

The piston bodies 171 and 271 are coupled with the piston shafts 172 and 272, and piston connecting portions 173 and 273 are formed at the ends of the piston shafts 172 and 272, that is, the ends facing the carrier parts 150 and 250. do.

When the carrier parts 150 and 250 rotate, the piston connecting parts 173 and 273 that are spline-coupled with the carrier connecting parts 153 and 253 are rotated, so that the rotational motion of the carrier parts 150 and 250 is performed by the piston parts 170 and 270. Is converted into linear motion.

Due to the linear movement of the piston parts 170 and 270, the piston parts 170 and 270 are moved toward the brake pad 20. Therefore, when the piston parts 170 and 270 contact the brake pad 20 and press the brake pad 20, braking force is generated due to friction between the brake pad 20 and the disk.

The load transmission unit 300 is connected to the pair of pressing units 100 and 200, respectively, and transmits a pressurized load of any one of the pressing units 100 and 200 to the other pressing unit 100 and 200.

The load transmission unit 300 according to an embodiment of the present invention includes a pair of ring gear units 310. The load transmission unit 300 may further include one or more transmission gear units 320.

Each of the pair of ring gear units 310 is rotatable in engagement with the planetary gear units 130 and 230.

The pair of ring gear units 310 may be directly engaged with each other. That is, the pair of ring gear units 310 may be directly connected to each other without disposing the transmission gear unit 320 in the middle.

In addition, the pair of ring gear units 310 may be indirectly engaged through one or more transmission gear units 320. That is, the transmission gear unit 320 may be disposed between the pair of ring gear units 310 to be engaged with the ring gear unit 310.

3 to 7, each of the ring gear units 310 may be installed between the planetary gears 131 and 231 and the connection worm wheels 122 and 222.

Each of the ring gear units 310 includes an inner ring gear 311 and an outer ring gear 315.

The ring gear inner part 311 may be disposed outside the planetary gear parts 130 and 230, and an inner gear part 312 may be formed along the inner circumferential surface so as to engage with the planetary gear parts 130 and 230.

The inner gear part 312 of the ring gear inner part 311 installed on one side (left as referenced in FIG. 5) is rotated in a clockwise or counterclockwise direction (based on FIG. 5) while being engaged with the planetary gear part 130, and the transmission gear part ( Through 320, the power is transmitted to the ring gear unit 310 disposed on the other side (right side of FIG. 5), specifically, the ring gear outer side 315.

The ring gear outer portion 315 is coupled to the outer surface of the ring gear inner portion 311, and an outer gear portion 316 is formed along the outer peripheral surface so as to engage with the transmission gear portion 320. The ring gear outer portion 315 may be integrally formed with the ring gear inner portion 311.

As the inner gear portion 312 of the ring gear inner portion 311 installed on one side (left as referenced in FIG. 5) rotates while being engaged with the planetary gear portion 130, the ring gear outer portion 315 formed integrally with the ring gear inner portion 311 ) Is also rotated in the same direction.

Accordingly, the rotational force of the ring gear outer portion 315 of one side is transmitted to the ring gear portion 310 disposed on the other side (right side of FIG. 5) through the transmission gear portion 320, specifically, the ring gear outer portion 315.

The transmission gear unit 320 rotates in engagement with the ring gear unit 310, specifically the outer gear unit 316 formed on the ring gear outer side 315, and transmits the rotational power of the ring gear unit 310 disposed on one side to the other side. It is transmitted to the arranged ring gear 310.

The rotational power transmitted to the ring gear part 310 of the other side is transmitted to the carrier part 250 coupled to the planetary gear 231 through the ring gear inner part 311 and the planetary gear 231. As the planetary gear 231 rotates and revolves along the outer circumferential surface of the sun gear 211, the piston part 270 moves toward the brake pad 20 as the carrier part 250 coupled with the planetary gear 231 rotates.

When the pressurizing load for pressing the brake pad 20 is not uniformly applied to the pair of pressurizing units 100 and 200, specifically the pair of piston units 170 and 270 due to the load transfer unit 300 , By transferring the pressing load of the piston part 170 on one side to the piston part 270 on the other side, the pair of piston parts 170 and 270 may contact the brake pad 20 with a uniform pressing load.

Of course, contrary to this, the pressurized load of the piston part 270 on the other side can be transmitted to the piston part 270 on the one side.

4 to 7, in the present invention, the transmission gear part 320 is formed in the shape of a spur gear, and is engaged with the outer gear part 316 formed along the outer circumferential surface of the ring gear outer part 315. Rotated.

However, in addition to the spur gear shape, the transmission gear unit 320 has various shapes such as a bevel gear shape, a helical gear shape in which the gear teeth are formed to be inclined at a predetermined angle with the rotation center axis of the transmission gear unit 320 Can be replaced with

In addition, although the transmission gear unit 320 has been illustrated as having a gear shape, it is not limited thereto, and is connected to the pair of ring gear units 310 in a belt shape, and the power of one pressing unit 100 is applied to the other pressing unit 200 ), it is possible to perform various modifications.

A plurality of load transmission units 300 may be provided. Accordingly, it is not limited to two as in the present embodiment, and various modifications such as one or three or more may be provided depending on the distance between the pair of pressing portions 100 and 200 are possible.

The operation principle of the vehicle parking brake device 1 configured as described above will be described.

In the present invention, in the vehicle parking brake device 1, a plurality of pressing units 100 and 200 press the brake pad 20 so that the brake pad 20 moves toward the disk, and between the brake pad 20 and the disk. Braking force is generated due to contact friction.

In the present invention, two pressing parts 100 and 200 are provided, but the present invention is not limited thereto, and various modifications such as three or more are possible.

The pressing units 100 and 200 receive power from the driving unit 50 and are linearly reciprocated toward the brake pad 20.

Specifically, when power is supplied from the outside to generate power in the motor unit 60, the power transmission unit 70 connected to the motor unit 60 is rotated by receiving power from the motor unit 60. The power transmission unit 70 simultaneously transmits rotational power to the pair of pressing units 100 and 200.

When the transmission worm wheel 72 is rotated by the driving of the motor unit 60, and thus each transmission worm gear 73 is rotated, the connection gear units 120 and 220 engaged with the transmission worm gear 73 are rotated.

The sun gear units 110 and 210 are also rotated in conjunction with the rotation of the connection gear units 120 and 220, and the planetary gears 131 and 231 meshed with the sun gears 111 and 211 perform rotational motion and the sun gear 111 , 211).

As the planetary gears 131 and 231 move orbit, the carrier units 150 and 250 coupled to the planetary gears 131 and 231 are rotated clockwise or counterclockwise. As the carrier units 150 and 250 rotate, the piston units 170 and 270 coupled with the carrier units 150 and 250 are moved toward the brake pad 20 and pressurize the brake pad 20 in contact.

Due to various factors, more power provided from the driving unit 50 may be transmitted to any one of the pair of pressing units 100 and 200.

As shown in FIG. 6, when the vehicle parking brake device 1 is driven, more power than the pressing part 200 disposed on the other side (the right as in FIG. 6) to the pressing part 100 disposed on one side (left as shown in FIG. 6) In the case of transmission, the piston part 170 on one side may contact the brake pad 20 before the piston part 270 on the other side.

If the piston part 170 on one side has already contacted the brake pad 20 and the piston part 270 on the other side has not yet contacted the brake pad 20, the planetary machine of the pressing part 100 on one side Fisherman 130 only rotates. That is, the planetary gear unit 130 does not perform orbit.

Since the power generated by the operation of the drive unit 50 is continuously transmitted to the sun gear 111, the sun gear 111 is continuously rotated. At this time, since the piston part 170 is already in contact with the brake pad 20, the plurality of planetary gears 131 meshed with the sun gear 111 do not rotate but only rotate.

Since the pressurization unit 100 disposed on the left side of FIG. 6, specifically the piston unit 170 can no longer move toward the brake pad 20, the planetary gear 131 performs only rotational motion and the planetary gear ( The ring gear inner portion 311 in which the inner gear portion 312 is formed to engage with 131 is rotated clockwise or counterclockwise.

The reaction force generated from the pressurizing part 100 on one side (left as per FIG. 6) through the ring gear outer part 315 integrally coupled with the ring gear inner part 311 is transmitted through the transmission gear part 320 to the other side (as in FIG. 6). It is transmitted to the pressing part 200 of the right side).

Specifically, pressurization of one side through the outer gear part 316 of the other side, the inner gear part 312 of the ring gear inner part 311, the planetary gear part 230, and the carrier part 250 coupled with the planetary gear part 230 The power provided to the unit 100 is transmitted to the piston unit 270 on the other side.

As a result, the power provided from the drive unit 50 is provided to the piston unit 270 on the other side that has not yet contacted the brake pad 20, so that the brake is already applied until the piston unit 270 on the other side contacts the brake pad 20. The linear movement of the piston unit 170 on one side of the pad 20 is stopped.

Thereafter, when both the piston parts 170 and 270 of one side and the other side contact the brake pad 20, the power of the driving part 50 is provided to the piston parts 170 and 270 of one side and the other side, respectively, and the piston of one side and the other side The brake pads 20 are simultaneously pressed by the parts 170 and 270 with a uniform load.

4 to 7, when the pressurizing load is biased to the pressurizing unit 100 on one side of the pair of pressurizing units 100 and 200 due to the load transmission unit 300 according to an embodiment of the present invention , By transferring this to the pressurizing unit 200 of the other side, the pair of pressurizing units 100 and 200 can press the brake pad 20 toward the disc with a uniform press load.

Likewise, when the pressurizing load is more biased to the pressurizing unit 200 of the other side of the pair of pressurizing units 100 and 200, it is transmitted to the pressurizing unit 100 of one side and a pair of pressurizing units 100 and 200 The brake pad 20 can be pressed toward the disc with a uniform pressure load.

3, the ring gear inner part 311 protrudes more toward the sun gear parts 110 and 210 (left as referenced in FIG. 3) than the ring gear outer part 315, and the ring gear inner part 311 is a connection gear part 120 It may be inserted into the connection insertion portions 123 and 223 of the, 220).

Accordingly, it is possible to prevent the ring gear unit 310 from being separated from the connection gear units 120 and 220 or the sun gear units 110 and 220 when receiving rotational power from the driving unit 50.

The carrier parts 150 and 250 are spline-coupled to the piston parts 170 and 270, and thereby the rotational power of the carrier parts 150 and 250 is applied to the piston parts 170 and 270, specifically the piston connection parts 173 and 273. Can be passed on.

The piston connections 173 and 273 are coupled with the piston shafts 172 and 272 coupled to the piston bodies 171 and 271, and the piston bodies 171 and 271 with rotational power transmitted through the carrier units 150 and 250 Makes it possible to move linearly toward the brake pad 20.

8 and 9, the vehicle parking brake device 1 according to an embodiment of the present invention further includes a mounting bracket 400, a mounting case 500, and a mounting cover 510.

The mounting case 500 includes a driving unit 50, a pressing unit 100, 200, and a load transmission unit 300. The mounting cover 510 is detachably coupled to the mounting case 500 and blocks the entry of foreign substances into the mounting case 500 by closing an opening on one side of the mounting case 500.

The mounting bracket 400 is disposed between the mounting case 500 and the mounting cover 510 and coupled to the mounting case 500.

When the mounting bracket 400 is disposed in the mounting case 500, the driving part 50, the pressing parts 100, 200, and the load transmission part 300, the driving part 50, the pressing parts 100, 200 and the load It guides the exact installation position of the delivery unit 300.

That is, the drive unit 50, the pressurization unit 100, 200, and the load transmission unit 300 are accurately guided by the mounting bracket 400, and can maintain a stably installed state without deviating from the installation position even after installation. There will be.

The driving unit 50, the pressing units 100, 200, and the load transmission unit 300 are in a state designated in the mounting bracket 400, that is, first mounted on the mounting bracket 400 and then together with the mounting bracket 400. It may be mounted on the mounting case 500.

The mounting bracket 400 may include a mounting bracket body 405, a drive worm gear mounting part 410, a power transmission part mounting part 420, a sun gear mounting part 430, and a transmission gear mounting part 440.

The mounting bracket body 405 has an outer shape corresponding to the shape of an opening on one side of the mounting case 500.

A drive worm gear mounting portion 410 may be formed in the mounting bracket body 405.

The drive worm gear mounting part 410 has a mounting hole through which the drive worm gear 62 can be inserted and mounted so that the drive worm gear 62 is fixed in place on the mounting bracket body 405.

According to the present embodiment, the distal end of the drive worm gear 62 is inserted into the mounting hole of the drive worm gear mounting portion 410 and the position on the mounting bracket body 405 is fixed.

Conversely, a mounting hole is formed in the center of the front end of the driving worm gear 62, and the driving worm gear mounting portion 410 has a mounting protrusion, and the mounting protrusion is inserted into the mounting hole, so that the driving worm gear 62 is installed in the mounting bracket body. The position on 405 may be fixed.

As the driving worm gear 62 is fixed in the correct position on the mounting bracket body 405 as described above, the motor unit 60 including the driving worm gear 62 can be installed at the correct position. Furthermore, even when the brake device is operated, the motor The part 60 can be stably positioned in the correct position.

A power transmission unit mounting portion 420 may be formed in the mounting bracket body 405.

The power transmission unit mounting unit 420 allows the power transmission unit 70 to be fixed in place on the mounting bracket body 405.

The power transmission unit mounting portion 420 includes support bars 421 and 425. Specifically, the support bars 421 and 425 include a first support bar 421 and a second support bar 425. The first support bar 421 and the second support bar 425 are disposed on both left and right sides of the mounting bracket body 405, respectively.

In the present embodiment, the first support bar 421 and the second support bar 425 are disposed one on the left and one on the right, but are not limited thereto, so that two or more on the left and two or more on the right. Can be placed.

The first support bar 421 and the second support bar 425 may be formed to protrude from the mounting bracket body 405 in the direction of the mounting case 500.

Both ends of the transmission shaft 71 of the power transmission unit 70 are inserted between the first support bar 421 and the second support bar 425 and mounted on the mounting bracket body 405.

That is, one end of the transmission shaft 71 is mounted between the first support bar 421 and the second support bar 425 on one side, and the other end of the transmission shaft 71 is the first support bar 421 on the other side. ) And the second support bar (425).

Accordingly, since both ends of the transmission shaft 71 are supported by the first support bar 421 and the second support bar 425, the position of the transmission shaft 71 is stably fixed on the mounting bracket body 405.

The second support bar 425 supports the lower portion of the transmission shaft 71. The first support bar 421 supports the upper portion of the transmission shaft 71. Therefore, the transfer shaft 71 is prevented from moving up and down by the first support bar 421 and the second support bar 425.

A first detachment preventing protrusion 422 protruding downward is provided at the front end of the first support bar 421. A second separation preventing protrusion 426 protruding upward is provided at the front end of the second support bar 425.

Therefore, the transmission shaft 71 is mounted between the first support bar 421 and the second support bar 425, and then the first support bar by the first separation prevention protrusion 422 and the second separation prevention protrusion 426. Separation from the 421 and the second support bar 425 is blocked.

At least one of the first support bar 421 and the second support bar 425 is mounted on the mounting bracket body 405 to be elastically deformable. Therefore, when the transmission shaft 71 is mounted, the distance between the first support bar 421 and the second support bar 425 may be extended.

Accordingly, it is possible to more easily mount the transmission shaft 71, and after the installation of the transmission shaft 71, the transmission shaft 71 is provided by the first separation prevention protrusion 422 and the second separation prevention protrusion 426. To prevent churn.

Both ends of the transmission shaft 71 are provided with movement preventing portions 71a.

In this embodiment, the movement preventing portion 71a is provided with a plate material having a larger diameter or width than the diameter of the transmission shaft 71 at both ends of the transmission shaft 71.

When the transmission shaft 71 is mounted on the first support bar 421 and the second support bar 425, the movement in the vertical direction is blocked by the first support bar 421 and the second support bar 425 , The movement to the left and right sides is blocked by the movement preventing portion 71a.

That is, the gap between the inner side of the pair of movement preventing portions 71a installed on both sides of the transmission shaft 71 is a pair of first support bars 421 and a second support installed on the mounting bracket body 405 Since it is set equal to the distance of the outer side of the bar 425, the left and right movement of the transmission shaft 71 is prevented by the movement preventing portion 71a being caught between the first support bar 421 and the second support bar 425 .

A sun gear mounting portion 430 may be formed on the mounting bracket body 405.

The sun gear mounting part 430 is the sun gear part 110, 210 or the connecting gear part 120, 220 so that the sun gear part 110, 210 and/or the connecting gear part 120, 220 are fixed in place on the mounting bracket body 405. It has a mounting hole that can be inserted and mounted.

That is, while the sun gear units 110 and 210 are mounted on the sun gear mounting unit 430, the sun gear units 110 and 210 and the connection gear units 120 and 220 can be fixed in place, or the connection gear units 120 and 220 ) Is mounted, it is possible to fix the sun gear units 110 and 210 and the connection gear units 120 and 220 in the correct position.

The sun gear connection bodies 112 and 212 may have mounting protrusions protruding toward the sun gear mounting portion 430. As the mounting protrusion is inserted into the mounting hole of the sun gear mounting portion 430, the position on the mounting bracket body 405 is fixed. By fixing the position of the sun gear units 110 and 210, the positions of the connection gear units 120 and 220 connected to the sun gear units 110 and 210 are also fixed.

Conversely, a mounting hole is formed in the center of the sun gear connection bodies 112 and 212, and the sun gear mounting part 430 has a mounting protrusion, and the mounting protrusion is inserted into the mounting hole, so that the sun gear parts 110 and 210, and The connection gear units 120 and 220 connected to the sun gear units 110 and 210 may be fixed in place on the mounting bracket body 405.

The connection gear bodies 121 and 221 may have mounting protrusions protruding toward the sun gear mounting portion 430. As the mounting protrusion is inserted into the mounting hole of the sun gear mounting portion 430, the position on the mounting bracket body 405 is fixed. By fixing the position of the connecting gear units 120 and 220, the positions of the sun gear units 110 and 210 connected to the connecting gear units 120 and 220 are also fixed.

Conversely, a mounting hole is formed in the center of the connection gear body 121, 221, and the sun gear mounting part 430 has a mounting protrusion, and the mounting protrusion is inserted into the mounting hole, so that the connection gear parts 120 and 220, and The sun gear units 110 and 210 connected to the connection gear units 120 and 220 may be fixed in place on the mounting bracket body 405.

A transmission gear part mounting part 440 may be formed on the mounting bracket body 405.

The transmission gear part mounting part 440 includes a mounting protrusion inserted into the transmission gear part 320 so that the transmission gear part 320 is fixed in place on the mounting bracket body 405.

That is, while the transmission gear part 320 is mounted on the transmission gear part mounting part 440, the transmission gear part 320 may be fixed in a proper position on the mounting bracket body 405.

The transmission gear unit 320 may include a mounting hole through which the mounting protrusion of the transmission gear unit mounting unit 440 can be inserted. As the mounting hole of the transmission gear unit 320 is fitted into the mounting protrusion of the transmission gear unit mounting unit 440, the position on the mounting bracket body 405 is fixed.

Conversely, a mounting protrusion is formed in the center of the transmission gear part 320, and the transmission gear part mounting part 440 is provided with a mounting hole, not the mounting protrusion, so that the mounting protrusion is inserted into the mounting hole, so that the transmission gear part 320 ) Can be fixed in place on the mounting bracket body 405.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only illustrative, and those of ordinary skill in the field to which the technology pertains, various modifications and other equivalent embodiments are possible. I will understand. Therefore, the technical protection scope of the present invention should be determined by the following claims.

1: parking brake device for vehicle 10: caliper housing unit
20: brake pad 50: drive unit
60: motor unit 70: power transmission unit
100, 200: pressurization part
110, 210: sun gear
120, 220: connection gear
130, 230: planetary gear
150, 250: carrier part
170, 270: piston part
300: load transmission unit
310: ring gear part
320: transmission gear part
400: mounting bracket
405: mounting bracket body
410: drive worm gear mounting part
420: power transmission part mounting part
430: sun gear mounting part
440: transmission gear part mounting part

Claims (21)

A pair of pressing units receiving power from the driving unit and pressing the brake pads;
A load transmission unit installed between the pair of pressing units and connected to each of the pair of pressing units, and transmitting a pressing load of any one of the pair of pressing units to the other pressing unit; And
And a mounting bracket for fixing at least one of the pressing part and the load transmission part in the mounting case.
The method of claim 1,
Each of the pair of pressing parts,
A sun gear unit rotated by receiving power from the driving unit;
A planetary gear engaged with the sun gear and rotated;
A carrier part coupled to the planetary gear part; And
And a piston unit connected to the carrier unit and receiving rotational power from the planetary gear unit and moving toward the brake pad to press the brake pad.
The method of claim 2,
The driving unit,
A motor unit receiving power from the outside to generate power; And
And a power transmission unit that is rotated by the driving of the motor unit and transmits a rotational force toward the sun gear unit.
The method of claim 3,
The mounting bracket has a drive worm gear mounting portion on the mounting bracket body,
The driving worm gear of the motor unit is mounted on the driving worm gear mounting unit to be fixed in position.
The method of claim 4,
The driving worm gear mounting portion is a vehicle parking brake device, characterized in that it has a mounting hole to insert and mount the driving worm gear.
The method of claim 3,
The mounting bracket is a vehicle parking brake device, characterized in that it has a power transmission unit mounting portion mounted on the mounting bracket body and fixed in position by the power transmission unit.
The method of claim 6,
The power transmission unit,
A transmission worm wheel disposed at a central portion of the transmission shaft and coupled to the motor unit to receive power from the motor unit; And
And a transmission worm gear disposed on both sides of the transmission shaft and transmitting the rotational force of the transmission worm wheel toward the sun gear unit.
The method of claim 7,
The power transmission unit mounting portion is installed on both sides of the mounting bracket body, respectively, the vehicle parking brake device, characterized in that it comprises a support bar for supporting both sides of the transmission shaft.
The method of claim 8,
The support bar,
A first support bar supporting one side of the transmission shaft; And
And a second support bar disposed to face the first support bar and supporting the other side of the transmission shaft.
The method of claim 9,
The first support bar has a first separation preventing protrusion protruding toward the second support bar,
The second support bar is formed to protrude toward the first support bar, characterized in that it comprises a second separation prevention protrusion for preventing the separation of the transfer shaft mounted between the first support bar and the second support bar Vehicle parking brake system.
The method of claim 10,
At least one of the first support bar and the second support bar is capable of elastic deformation.
The method of claim 9,
The transmission shaft is a vehicle parking brake device, characterized in that it comprises a plurality of movement preventing portions disposed outside the first support bar and the second support bar, respectively.
The method of claim 2,
The mounting bracket is a vehicle parking brake device, characterized in that it has a sun gear mounting portion mounted on the mounting bracket body and fixed in position by the sun gear portion.
The method of claim 13,
The vehicle parking brake device, characterized in that the sun gear mounting portion includes a mounting hole to insert and mount the sun gear portion.
The method of claim 3,
The vehicle parking brake device, characterized in that the power transmission unit transmits power to the sun gear unit through a connection gear unit.
The method of claim 15,
The connecting gear part
A connection gear body coupled to the sun gear unit; And
And a connection worm wheel formed on an outer circumferential surface of the connection gear body and engaged with the power transmission unit.
The method of claim 16,
The mounting bracket is a vehicle parking brake device, characterized in that it has a sun gear mounting portion mounted on the mounting bracket body and fixed in position by the connection gear portion.
The method of claim 17,
The vehicle parking brake device, characterized in that the sun gear mounting portion has a mounting hole to insert and mount the connection gear portion.
The method of claim 2,
The load transmission unit,
A pair of ring gears; And
And one or more transmission gear units disposed between a pair of the ring gear units and engaged with the ring gear units.
The method of claim 19,
The mounting bracket is a vehicle parking brake device, characterized in that it comprises a transmission gear unit mounting portion is mounted on the mounting bracket body and the transmission gear unit is fixed in position.
The method of claim 20,
The vehicle parking brake device, characterized in that the transmission gear unit mounting portion includes a mounting protrusion fitted to the transmission gear unit.

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