JP6408965B2 - Brake caliper - Google Patents

Description

  The present invention relates to a brake caliper for braking a vehicle, and more particularly to an electric brake caliper.

  A conventional vehicle braking device is described in, for example, the following patent document, and is connected to a caliper including two brake pads that can be braked by releasably sandwiching a rotating brake rotor, and the caliper. An oil feed pipe, a hydraulic piston connected to the oil feed pipe, a working oil flowing between the caliper and the oil feed pipe, and actuating the hydraulic piston to apply pressure to the working oil, and And a handle capable of driving the brake pad via hydraulic oil.

  When the driver pulls the handle, the hydraulic piston is actuated by the handle to push the hydraulic oil through a booster mechanism to apply pressure and transmit the pressure to the oil feed pipe through the hydraulic oil. Thus, the brake pad of the caliper can be driven to brake the brake rotor. When the driver returns the handle, the hydraulic piston returns, and the brake is released by the caliper as the pressure disappears.

  In such a vehicle braking device, the brake pad of the caliper is worn due to friction with the brake rotor every time it is used frequently, or the hydraulic oil leaks due to aging of the hydraulic piston or the oil feed pipe. As a result, the braking function deteriorates. However, an oil tank that can supplement the output of the braking pad by supplying extra hydraulic oil to the hydraulic piston as a relief means is generally installed there.

Taiwan Patent No. M392777

  However, the installation of the oil tank leads to an increase in the size of the entire vehicle braking device, which is not preferable in the use of space.

  In view of the above problems, an object of the present invention is to provide a brake caliper that can save space.

  In order to achieve the above object, the present invention provides a brake caliper that has a first board surface and a second board surface and that can be stopped by releasably sandwiching a conflicting brake rotor that rotates about the first axis. The brake caliper is housed in the housing, the housing, the brake unit attached to the housing, the brake unit capable of detachably stopping the brake rotor, and the housing. A drive unit that drives a braking unit, wherein the housing includes a first frame that covers a part of the first board surface in the brake rotor, and a second board surface in the brake rotor. A second frame that covers a part of the support unit, wherein the drive unit penetrates the support shaft of the housing and is movable along the support shaft; A motor held by the holding seat, and a mounting end attached to the motor along a second axis passing through the brake rotor in parallel with the first axis, and the holding seat and the first A shaft extending through one frame to the extending end facing the first panel surface of the brake rotor and attached to the extending end of the shaft that can be driven to rotate by the motor. A telescopic mechanism configured to be able to approach / separate the first board surface of the brake rotor by rotation of the shaft, and extends from the holding seat to the second frame of the housing An interlocking seat, wherein the braking unit is fixed to the sleeve of the telescopic mechanism and is mounted on the first board surface of the sleeve of the telescopic mechanism. A first brake pad that can abut against the first disk surface of the brake rotor according to the approaching movement, and fixed to the interlocking seat, and the second frame and the second of the brake rotor. A brake caliper is provided, comprising: a second braking pad that can be brought into contact with the second board surface in accordance with the movement of the interlocking seat while being inserted between the board and the board surface.

  According to the above configuration, the brake caliper according to the present invention has a structure in which the solid expansion / contraction mechanism is operated by the motor of the drive unit to drive the brake pad of the brake unit. Therefore, the entire brake caliper can be centrally installed on the brake rotor to save space.

It is an exploded perspective view in which each part composition of an embodiment of a brake caliper of the present invention is shown. It is a perspective view in which the state where the embodiment of the present invention was assembled with the brake rotor is shown. It is a longitudinal cross-sectional view by which the structure of embodiment of this invention is shown. It is a cross-sectional view by which the structure of embodiment of this invention is shown. It is sectional drawing in which only the 1st brake pad of the brake unit in embodiment of this invention contact | abuts to this brake rotor. It is sectional drawing of the front in which the state which both the 1st braking pad and 2nd braking pad in embodiment of this invention contact | abut to this brake rotor, and is braked is shown.

  Hereinafter, an embodiment of the brake caliper 100 of the present invention will be described in detail with reference to FIGS.

  As shown in FIGS. 2 and 6, the brake caliper 100 of the present invention has a first disc surface 210 and a second disc surface 220 that are opposite to each other, and a brake rotor 200 that rotates about a first axis L1. It can be stopped by being detachable. The brake caliper 100 is housed in the housing 10, which is attached to the housing 10 covering a part of the brake rotor 200, is attached to the housing 10, can be stopped with the brake rotor 200 being detachable, and can be stopped. And a drive unit 40 that drives the braking unit 30.

  As shown in FIGS. 1, 3, and 4, the housing 10 includes a first frame 11 that covers a part of the first panel surface 210 in the brake rotor 200, and a first axis L <b> 1 parallel to the first axis L <b> 1. Two support shafts 13 extending from one frame 11, and a second frame 12 covering a part of the second board surface 220 in the brake rotor 200 are provided. A first localization groove 111 is formed on the first frame 11 on the side facing the first board surface 210. A second localization groove 121 is formed on the second frame 12 on the side facing the second board surface 220.

  As shown in FIGS. 1 and 3, the drive unit 40 penetrates the support shaft 13 of the housing 10 and is movable along the support shaft 13, and a motor held by the holding seat 41. 42, a telescopic mechanism 44 configured to be driven by the motor 42 so as to be able to approach / separate the first board surface 210 in the brake rotor 200, and the side of the holding seat 41 facing the first board surface 210 And the interlocking seat 45 extending from the holding seat 41 to the second frame 12 of the housing 10.

  The expansion / contraction mechanism 44 of the drive unit 40 is installed on the shaft 441 on the opposite side of the shaft 441 that can be rotationally driven by the motor 42 and the side facing the first board surface 210 of the holding seat 41. A retaining ring 446 that abuts, a sleeve 447 attached to the shaft 441 and capable of approaching / separating from the first board surface 210 of the brake rotor 200 by rotation of the shaft 441, and protruding from the sleeve 447 to the brake rotor 200. An anchor 448 formed so as to be interposed between the first board surface 210 and the first frame 11 is configured.

  The shaft 441 of the telescopic mechanism 44 extends from the attachment end 442 attached to the motor 42 along the second axis L2 penetrating the brake rotor 200 in parallel with the first axis L1. The bearing 43 and the first frame 11 are configured to extend to the extending end 443 that faces the first disk surface 210 of the brake rotor 200. Further, on the outer peripheral surface of the shaft 441, a flange portion 444 that protrudes from the shaft 441 so as to be interposed between the sleeve 447 and the holding seat 41 and abuts against the sleeve bearing 43, and the flange portion 444 leads to the first board surface 210. A threaded portion 445 that can be screwed into the sleeve 447 is formed in the approaching portion. Therefore, the shaft 441 is configured to be rotated by being positioned by the holding seat 41 and the sleeve bearing 43 by the flange portion 444 and the retaining ring 446 coming into contact with the holding seat 41 and the sleeve bearing 43.

  The anchor 448 of the telescopic mechanism 44 is disposed so as to be fitted into the first positioning groove 111 in the first frame 11 in the housing 10, and by this configuration, the anchor 448 and the sleeve 447 are arranged in the first frame. 11, when the shaft 441 is driven to rotate by the motor 42, the sleeve 447 and the anchor 448 attached to the shaft 441 are not rotatable. Therefore, the sleeve 447 and the anchor 448 are arranged along the second axis L2 according to the rotation direction of the shaft 441 driven by the motor 42, as shown in FIGS. The first board surface 210 can be moved closer to or away from the first board surface 210.

  The sleeve bearing 43 of the drive unit 40 is connected to the holding seat 41 to be in contact with the flange portion 441, extends from the periphery of the base portion 431, extends from the flange portion 441, a part of the screw portion 445, and the sleeve 447. And a peripheral wall portion 432 surrounding a part. On the other hand, the interlocking seat 45 is formed with a claw portion 451 that protrudes to the second frame 12 and is held by the second positioning groove 121 in the second frame 12. With this configuration, as shown in FIG. 3 and FIG. 6, when the interlocking seat 45 moves in conjunction with the holding seat 41, the claw portion 451 fits into the second localization groove 121, and the brake rotor 200 moves to the brake rotor 200. A certain second board surface 220 can be approached or separated.

  The braking unit 30 is fixed to the anchor 448 on the sleeve 447 of the telescopic mechanism 44 and abuts on the first board surface 210 of the brake rotor 200 according to the movement of the sleeve 447 approaching the first board surface 210. The brake pad 31 is fixed to the first brake pad 31 and the claw portion 451 of the interlocking seat 45 of the drive unit 40, and is inserted between the second frame 12 and the second panel surface 220 of the brake rotor 200. However, the second brake pad 32 that can come into contact with the second board surface 220 according to the movement of the interlocking seat 45 is provided.

  Hereinafter, the operation of the brake caliper 100 of the present invention will be described in detail with reference to FIGS. 3, 5, and 6.

  First, as shown in FIG. 3, when the brake caliper 100 is not in operation, the first brake pad 31 and the interlocking seat 45 fixed to the anchor 448 in the sleeve 447 in the telescopic mechanism 44 of the drive unit 40. The second brake pads 32 fixed to the claw portions 451 are separated from the first board surface 210 and the second board surface 220 of the brake rotor 200, respectively, and do not hinder the rotation of the brake rotor 200. Has been placed.

  In the state shown in FIG. 3, when the motor 42 of the drive unit 40 rotationally drives the shaft 441 of the telescopic mechanism 44, the sleeve 447 and the anchor 448 attached to the shaft 441 are rotated by the rotation of the shaft 441. Along the first positioning groove 111 formed in one frame 11, it moves away from the first frame 11, approaches the first board surface 210 in the brake rotor 200, and is fixed to the anchor 448. The first braking pad 31 is in contact with the first board surface 210 of the brake rotor 200, and the state shown in FIG.

  When the motor 42 continues to rotationally drive the shaft 441 after the state shown in FIG. 5 is reached, the shaft 441 causes the flange 444 to move the holding seat 41 and the motor 42 together with the sleeve bearing 43 by the rotation. A part of the claw portion 451 of the interlocking seat 45 extending from the holding seat 41 to the second frame 12 of the housing 10 is also partly located on the second frame 11. The second braking pad 32 that protrudes from the second localization groove 121 and is fixed to the claw portion 451 is brought into contact with the second disk surface 220 of the brake rotor 200 to be in the state shown in FIG. The brake pad 32 can be stopped by holding the brake rotor 200 together with the first brake pad 31 for braking. Further, when both the first braking pad 31 and the second braking pad 32 come into contact with the brake rotor 200, they cannot approach any further, so that the shaft 441 driven by the motor 42 cannot further rotate, and the motor 42 The driving force applied to the shaft 441 is converted into a braking force by which the first braking pad 31 and the second braking pad 32 sandwich the brake rotor 200.

  When the motor 42 of the drive unit 40 rotates the shaft 441 of the telescopic mechanism 44 in the reverse direction from the state in which the brake unit 30 shown in FIG. The first braking pad 31 that contacts the first board surface 210 of the brake rotor 200 is returned to the shaft 441 side away from the first board surface 210, and the anchor 448 is moved to the first frame 11. It returns to the localization groove | channel 111 and is made to contact | abut to the 1st frame 11, and will be in the state shown by FIG. Subsequently, when the motor 42 rotates the shaft 441 in the reverse direction after the state shown in FIG. 5 is reached, the holding seat 41 is located on the brake rotor 200 by the contact of the retaining ring 446 and the anchor 448. Moving to the first board surface 210, the claw portion 451 in the interlocking seat 45 is returned to the second localization groove 121 in the second frame 12, so that the second braking pad 32 that comes into contact with the second board surface 220 is moved. Also, the brake caliper 100 can be freely rotated by bringing it back away from the second board surface 220 to the state shown in FIG.

  As described above, the brake caliper 100 of the present invention is applied as a slope start assisting device in combination with, for example, an electric control unit (ECU) of a vehicle. Can be prevented from slipping down or going backward from the slope. In addition, if the extension / contraction amount of the extension / contraction mechanism 44 is designed so as to have an extra amount in advance, the deterioration of the braking function due to wear of the first braking pad 31 and the second braking pad 32 in the braking unit 30 can be easily supplemented. Can be dealt with.

  The telescopic mechanism 44 in the drive unit 40 of the brake caliper 100 of the present invention uses a driving method based on a structure in which a screw is rotated by a motor, but is not limited to this embodiment, and instead includes a shaft 441 and a sleeve 447. It is also possible to have a structure in which the first braking pad 31 in the braking unit 30 is controlled by integrating and reciprocating the shaft 441 along the second axis L2 with a device such as a linear motor.

  In summary, the brake caliper 100 of the present invention includes a motor 42 of the drive unit 40, an expansion / contraction mechanism 44 that is driven by the motor 42 and can directly move the first braking pad 31 in the braking unit 30, and an expansion / contraction mechanism. Since the holding seat 41 and the interlocking seat 45 that can move the second brake pad 32 relative to each other by moving relative to the housing 44 and the housing 10 can be operated, the brake unit 30 can be operated without using a medium. The whole can be installed in the brake rotor 200 collectively. Furthermore, if the extension / contraction mechanism 44 is designed so that there is an extra amount of expansion / contraction, it is possible to easily cope with the deterioration of the braking function due to wear of the braking unit 30, so there is no need to add any relief means, and space usage is greatly increased. Can save you money.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to this, A various change is possible in the range which does not deviate from the summary.

  According to the above configuration, the brake caliper of the present invention greatly saves the space occupied in the vehicle, so that the surplus space can be used for addition of other devices and parts, increase in quantity, modification, and the like.

10 Housing 11 First frame 111 First localization groove 12 Second frame 121 Second localization groove 13 Support shaft 30 Brake unit 31 First brake pad 32 Second brake pad 40 Drive unit 41 Holding seat 42 Motor 43 sleeve bearing 431 base 432 peripheral wall 44 telescopic mechanism 441 shaft 442 attaching end 443 extending end 444 flange 445 screw 446 retaining ring 447 sleeve 448 anchor 45 interlocking seat 451 claw 200 brake rotor 210 first board surface 220 first Second board surface L1 First axis L2 Second axis

Claims (2)

A brake caliper that has a first board surface and a second board surface that are opposite to each other, and is capable of detachably holding and stopping a brake rotor that rotates about a first axis,
The brake caliper
The body,
A braking unit attached to the housing and capable of detachably stopping the brake rotor;
A drive unit that is housed in the housing and that drives the braking unit;
The housing is
A first frame covering a part of the first board surface of the brake rotor;
Two support shafts extending from the first frame in parallel with the first axis;
A second frame covering a part of the second board surface of the brake rotor,
The drive unit is
A holding seat that is penetrated by the support shaft of the housing and is movable along the support shaft;
A motor held by the holding seat;
The brake passes through the holding seat and the first frame from a mounting end attached to the motor along a second axis passing through the brake rotor in parallel with the first axis. A shaft that extends to the extending end facing the first board surface of the rotor and that can be rotationally driven by the motor, and is attached to the extending end of the shaft and rotates to the brake rotor by the rotation of the shaft. A telescopic mechanism configured to have a sleeve that can approach / separate the first board surface;
An interlocking seat extending from the holding seat to the second frame of the housing,
The braking unit is
A first brake that is fixed to the sleeve of the expansion / contraction mechanism and can abut on the first panel surface of the brake rotor according to a movement of the sleeve of the expansion / contraction mechanism approaching the first panel surface. Pad,
While being fixed to the interlocking seat, and being inserted between the second frame and the second panel surface of the brake rotor, it is possible to contact the second panel surface according to the movement of the interlocking seat. A second braking pad that can be
With this configuration, when the motor of the drive unit rotationally drives the shaft, the first braking pad fixed to the sleeve approaching the first panel surface of the brake rotor by rotation of the shaft is provided. A state in contact with the first board surface of the brake rotor,
When the motor continues to rotationally drive the shaft from the contacted state, the shaft and the holding seat to which the motor is attached are moved away from the first brake pad by the rotation of the shaft. The second brake pad fixed to the interlocking seat extending from the holding seat to the second frame of the housing comes into contact with the second disc surface of the brake rotor and The brake rotor can be stopped with one brake pad ,
A first localization groove is formed on a side of the first frame in the housing facing the first board surface,
The telescopic mechanism of the drive unit is
A retaining ring installed on the shaft on the side opposite to the side facing the first board surface of the holding seat and contacting the opposite side;
It extends from the sleeve and is interposed between the first disk surface of the brake rotor and the first frame, and is housed and held in the first positioning groove in the first frame. An anchor that can be further configured such that the anchor protrudes partially from the first stereotactic groove when the sleeve is driven to approach the first platen; and A brake caliper that enters the first positioning groove and contacts the first frame when the sleeve is driven away from the first board surface. On the outer peripheral surface of the shaft of the drive unit, a flange portion protruding from the shaft so as to be interposed between the sleeve and the holding seat, and a portion closer to the first board surface than the flange portion, A screw part that can be screwed with the sleeve is formed;
The drive unit further includes a sleeve bearing installed between the holding seat and the flange portion of the telescopic mechanism,
The sleeve bearing is
A base connected to the holding seat and abutted against the flange;
The brake caliper according to claim 1 , further comprising a peripheral wall portion extending from a peripheral edge of the base portion and surrounding the flange portion, a part of the screw portion, and a part of the sleeve.

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