阅读说明：本技术 手刹车自动补偿来令磨耗行程装置 (Device for making abrasion stroke by automatic compensation of hand brake ) 是由 廖志贤 于 2020-05-20 设计创作，主要内容包括：一种手刹车自动补偿来令磨耗行程装置,包含本体单元、第一来令单元、第二来令单元、补偿单元及转动定位单元。所述第一来令单元与所述第二来令单元设置于刹车盘片与所述本体单元之间,所述补偿单元包括掣动件、抵接于所述掣动件的螺杆件,以及螺合于所述螺杆件的螺套件,所述掣动件受外力作用能提供所述螺杆件产生振动,且使所述螺套件相对于所述螺杆件旋转,且所述螺套件推掣所述第一来令单元朝所述刹车盘片自动补偿来令磨耗行程,通过所述转动定位单元能降低转动摩擦,且能防止所述螺套件反转,以确保自动补偿效果。(A device for automatically compensating the abrasion stroke of a hand brake comprises a body unit, a first brake unit, a second brake unit, a compensation unit and a rotary positioning unit. The first order unit and the second order unit are arranged between the brake disc and the body unit, the compensation unit comprises an actuating piece, a screw rod piece abutted against the actuating piece and a threaded sleeve piece screwed on the screw rod piece, the actuating piece can provide vibration for the screw rod piece under the action of external force, the threaded sleeve piece rotates relative to the screw rod piece, the threaded sleeve piece pushes the first order unit to automatically compensate towards the brake disc to enable the abrasion stroke, the rotation positioning unit can reduce the rotation friction and prevent the threaded sleeve piece from reversing so as to ensure the automatic compensation effect.)

1. The utility model provides a hand brake automatic compensation makes wearing and tearing stroke device, is applicable to brake disc installation location, the brake disc has first terminal surface, and the second terminal surface opposite to the first terminal surface, the automatic compensation makes wearing and tearing stroke device include body unit, first order unit, second order unit, compensation unit and rotation positioning unit, its characterized in that:

the body unit comprises a first side seat opposite to the first end face and a second side seat connected to the first side seat and opposite to the second end face, the first side seat and the second side seat jointly define an accommodating space for accommodating the brake disc, the first side seat is provided with a shaft hole extending along an axis, and the shaft hole is communicated with the accommodating space;

the first order unit is arranged between the first end surface and the first side seat;

the second order unit is arranged between the second end face and the second side seat;

the compensation unit is at least partially arranged in the shaft hole and comprises a braking piece, a screw rod piece abutted against the braking piece and a threaded sleeve piece screwed on the screw rod piece, the braking piece can provide vibration for the screw rod piece under the action of external force, the threaded sleeve piece rotates relative to the screw rod piece, and the threaded sleeve piece pushes the first unit to automatically compensate towards the brake disc to enable the abrasion stroke;

the rotary positioning unit is arranged between the screw sleeve component and the first order unit and comprises a first positioning concave hole group arranged on the screw sleeve component, a second positioning concave hole group positioned relative to the first order unit and a ball nest arranged between the first positioning concave hole group and the second positioning concave hole group, and a plurality of balls sleeved on the ball nest, wherein the first positioning concave hole group is provided with a plurality of first positioning concave holes which are arranged around the axis at equal intervals, the second positioning concave hole group is provided with a plurality of second positioning concave holes which are arranged around the axis at equal intervals and respectively correspond to the first positioning concave holes, the ball nest is provided with a plurality of through holes which are arranged around the axis at equal intervals, the ball can rotate and is sleeved in the through holes, and the two opposite sides are respectively sleeved in the first positioning concave hole and the second positioning concave hole.

2. The hand brake automatic compensation wear stroke device of claim 1, wherein: the linkage unit comprises a fixed seat which is opposite to the accommodating space and is arranged on the outer side of the first side seat, a pushing seat which is arranged between the second side seat and the second brake unit, and a linkage piece which is connected between the fixed seat and the pushing seat, wherein the fixed seat is provided with a central hole which is arranged along the axis, the braking piece and the screw rod piece are arranged in the central hole, the screw sleeve piece can slide and is arranged between the central hole and the shaft hole, and when the screw sleeve piece pushes the first brake unit, the linkage unit pushes the second brake unit to automatically compensate towards the brake disc to enable the abrasion stroke.

3. The hand brake automatic compensation wear stroke device of claim 2, wherein: the compensation unit also comprises a positioning piece fixed on the fixed seat and arranged on one side of the braking piece, and a plurality of rolling pieces arranged between the positioning piece and the braking piece, wherein the positioning piece is provided with a first side surface, a plurality of first grooves concavely arranged on the first side surface and arranged at equal intervals around the axis, the braking piece is provided with a second side surface opposite to the first side surface, and a plurality of second grooves concavely arranged on the second side surface and arranged at equal intervals around the axis, the rolling pieces are respectively nested in the first grooves, when the braking piece is operated to rotate relative to the positioning piece, the braking piece can generate reciprocating displacement and generate vibration force along the axis through the rolling pieces, and the automatic compensation makes the abrasion stroke device also comprise a restoring piece elastically abutted between the screw rod piece and the fixed seat, the restoring piece provides a trend that the stopping piece keeps moving towards the positioning piece after moving along the axis.

4. The hand brake automatic compensation wear stroke device of claim 3, wherein: the compensation unit further comprises a spring elastically abutted between the screw rod piece and the screw sleeve piece, and a push block positioned on the first order unit, and the second positioning concave hole group is arranged on the push block.

5. The hand brake automatic compensation wear stroke device of claim 4, wherein: the compensation unit further comprises a thrust bearing arranged between the spring and the screw rod.

6. The hand brake automatic compensation wear stroke device of claim 5, wherein: the screw rod piece of the compensation unit is provided with a braked disc abutted to the braked piece and a screw rod part connected to the braked disc, and the thrust bearing is arranged between the braked disc and the spring.

7. The hand brake automatic compensation wear stroke device of claim 6, wherein: the fixed seat of the linkage unit is provided with a main seat body and a side seat body locked on one side of the main seat body, the central hole is communicated with the main seat body and the side seat body, the large-diameter section of the central hole is provided with a non-circular area arranged on the side seat body, the outline shape of the braked disc corresponds to the non-circular area of the large-diameter section and is also non-circular, and the braked disc cannot rotate but can move along the axis and is sleeved in the non-circular area.

8. The hand brake automatic compensation wear stroke device of claim 1, wherein: the quantity of the first positioning concave holes of the rotary positioning unit is larger than that of the balls, and the quantity of the second positioning concave holes is larger than that of the balls.

9. The hand brake automatic compensation wear stroke device of claim 8, wherein: the first positioning concave hole of the rotary positioning unit is twice the number of the balls, and the second positioning concave hole is twice the number of the balls.

Technical Field

The invention relates to a brake device of a vehicle, in particular to a device for automatically compensating a wear stroke of a hand brake.

Background

The prior caliper device (the taiwan patent No. TW M394267) capable of being used as a hand brake comprises a body unit, a rocker arm unit pivoted to the body unit, a brake pad unit, a hand brake cable and an oil pressure piston unit, and can be matched with a brake disc to achieve the purpose of hand brake. This body unit has an operation space, and this rocking arm unit has two rocking arms of locating this operation space both sides respectively the pivot, and this lining unit respectively has one and sets up the lining between rocking arm and this brake disc, and this hand brake cable has an outer tube and wears to locate the cable wire of this outer tube, and this outer tube one end is supported and is stopped at one of them rocking arm side, and this cable wire has one and scarf joint the end portion of cup jointing of location at another rocking arm and one can be by the pulled end portion of hand brake lever pulling.

The user can also operate the hand brake lever except using the foot brake and driving the brake pad unit to brake the brake disc through the oil pressure piston unit, and drives the rocker arm by using the hand brake cable, and pushes the brake pad unit to brake the brake disc.

Another caliper device capable of being used as a hand brake (taiwan patent No. TW M415088), comprises a body unit, a piston unit, a brake pad unit and a hand brake unit. The hand brake unit is provided with a driving piece, a first brake piece and a second brake piece, the first brake piece and the second brake piece are respectively driven by a first driving part and a second driving part of the driving piece, and the first brake piece and the second brake piece can be respectively driven by an original position approaching to the first side piece to push the first brake piece and the second brake piece to generate displacement towards a brake position of a brake disc to achieve the purpose of hand braking.

After the applicant has actively studied and developed, the present invention has been developed.

Disclosure of Invention

The invention aims to provide a device for automatically compensating the abrasion stroke of a hand brake, which can achieve the expected brake operation.

The invention relates to a hand brake automatic compensation wearing stroke device, which is suitable for mounting and positioning a brake disc, wherein the brake disc is provided with a first end surface and a second end surface opposite to the first end surface, the automatic compensation wearing stroke device comprises a body unit, a first order unit, a second order unit, a compensation unit and a rotary positioning unit, the body unit comprises a first side seat opposite to the first end surface and a second side seat connected with the first side seat and opposite to the second end surface, the first side seat and the second side seat jointly define an accommodating space for accommodating the brake disc, the first side seat is provided with an axial hole extending along an axial line, the axial hole is communicated with the accommodating space, the first order unit is arranged between the first end surface and the first side seat, and the second order unit is arranged between the second end surface and the second side seat, the compensation unit is at least partially arranged in the shaft hole and comprises a braking part, a screw rod part abutted against the braking part and a threaded sleeve part screwed on the screw rod part, the braking part can provide vibration for the screw rod part under the action of external force, the threaded sleeve part rotates relative to the screw rod part, the threaded sleeve part pushes the first order unit to automatically compensate towards the brake disc to enable the abrasion stroke, the rotation positioning unit is arranged between the threaded sleeve part and the first order unit and comprises a first positioning concave hole group arranged on the threaded sleeve part, a second positioning concave hole group positioned relative to the first order unit, a ball nest arranged between the first positioning concave hole group and the second positioning concave hole group and a plurality of balls sleeved on the ball nest, the first positioning concave hole group is provided with a plurality of first positioning concave holes which are arranged at equal intervals around the axis, the second location concave hole group has the several and centers on the axis is equidistant setting and corresponds respectively the second location concave hole of first location concave hole, the pearl nest has the several and centers on the axis is the perforation of equidistant setting, the ball can rotate and the cover is located in the perforation, and be opposite both sides and overlap respectively and locate first location concave hole with in the second location concave hole.

The hand brake automatic compensation wearing stroke device also comprises a linkage unit which can slide along the axis and is arranged on the body unit, wherein the linkage unit comprises a fixed seat which is opposite to the accommodating space and is arranged on the outer side of the first side seat, a pushing seat which is arranged between the second side seat and the second brake unit, and a linkage piece which is connected between the fixed seat and the pushing seat, the fixed seat is provided with a central hole which is arranged along the axis, the braking piece and the screw rod piece are arranged in the central hole, the screw sleeve piece can slide and is arranged between the central hole and the shaft hole, and when the screw sleeve piece pushes the first brake unit, the linkage unit also pushes the second brake unit to automatically compensate towards the brake disc to realize wearing stroke.

The invention relates to a device for automatically compensating the abrasion stroke of a hand brake, which comprises a compensation unit, a positioning piece and a plurality of rolling pieces, wherein the positioning piece is fixed on a fixed seat and arranged on one side of an actuating piece, the rolling pieces are arranged between the positioning piece and the actuating piece, the positioning piece is provided with a first side surface, a plurality of first grooves which are concavely arranged on the first side surface and are arranged at equal intervals around an axis, the actuating piece is provided with a second side surface opposite to the first side surface, and a plurality of second grooves which are concavely arranged on the second side surface and are arranged at equal intervals around the axis, the rolling pieces are respectively nested in the first grooves, when the actuating piece is operated to rotate relative to the positioning piece, the actuating piece can generate reciprocating displacement along the axis and generate vibration force, and the device for automatically compensating the abrasion stroke also comprises a restoring piece which elastically abuts between a screw rod piece and the fixed seat, the restoring piece provides a trend that the stopping piece keeps moving towards the positioning piece after moving along the axis.

The hand brake automatic compensation makes wearing and tearing stroke device of this invention, the said compensating unit also includes the spring that elastically supports between said screw member and said screw external member, and position in the said push block of the first order unit, the said second positions the concave hole group to locate in the said push block.

The hand brake automatic compensation of the invention causes the wearing and tearing stroke device, the said compensating unit also includes the thrust bearing set up between said spring and said screw member.

The invention relates to a device for automatically compensating the abrasion stroke of a hand brake, wherein a screw rod piece of a compensation unit is provided with a braked disc abutting against a braked piece and a screw rod part connected with the braked disc, and a thrust bearing is arranged between the braked disc and a spring.

The hand brake automatic compensation wearing stroke device comprises a fixed seat of a linkage unit, wherein the fixed seat is provided with a main seat body and a side seat body locked on one side of the main seat body, a central hole is communicated with the main seat body and the side seat body, a large-diameter section of the central hole is provided with a non-circular area arranged on the side seat body, the outline shape of a braked disc corresponds to the non-circular area of the large-diameter section and is also non-circular, and the braked disc cannot rotate but can move along the axis and is sleeved on the non-circular area.

According to the hand brake automatic compensation abrasion stroke device, the number of the first positioning concave holes of the rotary positioning unit is larger than that of the balls, and the number of the second positioning concave holes is larger than that of the balls.

According to the hand brake automatic compensation abrasion stroke device, the number of the first positioning concave holes of the rotary positioning unit is twice that of the balls, and the number of the second positioning concave holes is twice that of the balls.

The invention has the beneficial effects that: by means of the arrangement of the compensation unit and the vibration force generated by operating the braking piece, the threaded sleeve piece can rotate relative to the threaded rod piece, the first coming unit and the second coming unit can automatically compensate towards the brake disc to enable the abrasion stroke, the rotation friction of the threaded sleeve piece can be reduced through the rotation positioning unit, and the threaded sleeve piece can be prevented from reversing, so that the automatic compensation effect is ensured.

Drawings

FIG. 1 is a perspective assembly view of one embodiment of the hand brake automatic compensation wear stroke apparatus of the present invention;

FIG. 2 is an exploded perspective view of the embodiment;

FIG. 3 is a partially exploded perspective view of FIG. 2;

FIG. 4 is an assembled cross-sectional view of the embodiment, showing a state where the brake is not applied;

FIG. 5 is a schematic partial cross-sectional view of FIG. 4;

FIG. 6 is a schematic view of a braking state of the embodiment, showing a state of not being worn;

FIG. 7 is a schematic diagram showing the operation of an automatic compensation stroke according to the embodiment;

FIG. 8 is another operational diagram of the automatic compensation stroke of the embodiment;

FIG. 9 is a schematic diagram of the operation of yet another automatic compensation stroke of the embodiment;

fig. 10 is a sectional view taken along line X-X in fig. 4.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1, 2 and 4, an embodiment of the device 100 for automatically compensating for wear stroke of a hand brake according to the present invention is adapted to be combined with a brake disc 200, the brake disc 200 having a first end surface 210 and a second end surface 220 opposite to the first end surface 210, the device 100 for automatically compensating for wear stroke comprises a body unit 10, a first commanding unit 20, a second commanding unit 30, a linking unit 40, a compensating unit 50 and a rotational positioning unit 60.

The body unit 10 includes a first side seat 11 opposite to the first end surface 210, a second side seat 12 connected to the first side seat 11 and opposite to the second end surface 220, and two guide rods 13 connected between the first side seat 11 and the second side seat 12, the first side seat 11 and the second side seat 12 together define an accommodating space 14 for accommodating the brake disc 200, the first side seat 11 has a shaft hole 111 extending along an axis L, and the shaft hole 111 is communicated to the accommodating space 14. In addition, the first side seat 11 and the second side seat 12 are respectively provided with two cylinder chambers 15, and each cylinder chamber 15 is respectively provided with a piston member (not shown) for driving the first and second commanding units 20 and 30, but the technology of driving the first and second commanding units 20 and 30 by using the piston member is not the focus of the present invention, so it is not necessary to describe the technology.

The first docking unit 20 is disposed between the first end surface 210 and the first side seat 11.

The second docking unit 30 is disposed between the second end face 220 and the second side seat 12.

The linking unit 40 can slide along the axis L and is installed on the body unit 10, and includes a fixed seat 41 opposite to the accommodating space 14 and disposed outside the first side seat 11, a pushing seat 42 disposed between the second side seat 12 and the second linking unit 30, and a linking member 43 connected between the fixed seat 41 and the pushing seat 42. The fixing base 41 has a main base 410, a side base 420 locked to one side of the main base 410, a central hole 411 disposed along the axis L and communicating the main base 410 and the side base 420, the central hole 411 is in a stepped hole shape and has a large diameter section 412, a front reducing section 413 connected to one side of the large diameter section 412 and disposed on the side base 420 along the axis L, and a rear reducing section 414 connected to the other side of the large diameter section 412 along the axis L, a front shoulder face 415 is disposed at a junction of the large diameter section 412 and the front reducing section 413, a rear shoulder face 416 is disposed at a junction of the large diameter section 412 and the rear reducing section 414, and the large diameter section 412 has a non-circular area 417 disposed on the side base 420. The linking member 43 has two pairs of ears 431 slidably sleeved on the guide rod 13.

The compensating unit 50 is mounted in the shaft hole 111 and the central hole 411, and includes a positioning element 51 fixed to the fixing base 41 and abutting against the front shoulder 415, an actuating element 52 capable of rotating around the axis L relative to the positioning element 51, a plurality of rolling elements 53 disposed between the positioning element 51 and the actuating element 52, a screw element 54 abutting against the actuating element 52, a threaded sleeve element 55 screwed to the screw element 54, a restoring element 56 elastically abutting against the screw element 54 and the fixing base 41, a spring 57 elastically abutting against the screw element 54 and the threaded sleeve element 55, a pushing block 58 positioned on the first guiding unit 20, and a thrust bearing 59 disposed between the spring 57 and the screw element 54.

The positioning element 51 is mounted on the large-diameter section 412 and is fixed on the front shoulder surface 415, the positioning element 51 has a first side surface 511, and a plurality of first grooves 512 recessed in the first side surface 511 and arranged at equal intervals around the axis L, the middle of the first grooves 512 is deeper, and the depth gradually decreases from the middle along two sides of the axis L (see fig. 10).

The braking member 52 has a braking disc 521 opposite to the positioning member 51 and disposed on the large-diameter section 412, and a braking rod 522 connected to the braking disc 521 and passing through the front reducing-diameter section 413, the braking disc 521 has a second side surface 523 opposite to the first side surface 511, and a plurality of second grooves 524 recessed in the second side surface 523 and disposed at equal intervals around the axis L, the middle portion of the second grooves 524 is deeper, and the depth of the second grooves is gradually reduced from the middle along two sides of the axis L (see fig. 10), and the braking rod 522 can extend out of the fixing base 41. The rolling members 53 are respectively nested in the first grooves 512, and when the stopper 52 rotates relative to the positioning member 51, the second grooves 524 can be nested or separated relative to the rolling members 53.

The screw 54 has a disk 541 abutting against the braking disk 521, and a screw portion 542 connected to the disk 541. The contour shape of the caught disk 541 corresponds to the non-circular area 417 of the large diameter section 412, and is also non-circular, and the caught disk 541 cannot rotate but can move along the axis L and is sleeved in the non-circular area 417.

The screw member 55 is slidably disposed between the central hole 411 and the shaft hole 111, and has a screw hole 551 engaged with the screw portion 542.

The restoring member 56 is a compression spring, and is elastically pressed between the disc 541 to be braked and the rear shoulder surface 416, and the elastic force thereof provides a tendency that the disc 541 to be braked is constantly pressed against the disc 521, and the disc 521 is constantly pressed against the positioning member 51.

The spring 57 is elastically pressed between the caught plate 541 and the screw member 55, and the elastic force thereof provides the screw member 55 with a tendency of constantly moving toward the first driving unit 20.

The pushing block 58 is positioned against the first guiding unit 20, and provides a larger pushing area between the screw sleeve 55 and the first guiding unit 20.

The thrust bearing 59 is disposed between the caught plate 541 and the spring 57, and provides smooth rotation of the threaded sleeve 55 relative to the screw member 54.

Referring to fig. 3 and 5, the rotational positioning unit 60 is disposed between the threaded member 55 and the first guiding unit 20, and includes a first positioning concave hole set 61 disposed on the threaded member 55, a second positioning concave hole set 62 disposed on the pushing block 58 and used for positioning the first guiding unit 20, a ball nest 63 disposed between the first positioning concave hole set 61 and the second positioning concave hole set 62, and a plurality of balls 64 sleeved on the ball nest 63. This first location concave hole group 61 has the several and is the first location shrinkage pool 611 that the equidistant setting set up around this axis L, and this second location concave hole group 62 has the several and is equidistant setting and corresponding to respectively around this axis L the second location shrinkage pool 621 of first location shrinkage pool 611, this pearl nest 63 have the several and be the perforation 631 that the equidistant setting set up around this axis L, the cover that ball 64 can rotate is located in the perforation 631, and be opposite both sides and overlap respectively and locate first location shrinkage pool 611 with in the second location shrinkage pool 621. The number of the first positioning concave holes 611 and the number of the second positioning concave holes 621 are greater than the number of the balls 64, the number of the first positioning concave holes 611 is twice the number of the balls 64, the number of the second positioning concave holes 621 is twice the number of the balls 64, the number of the first positioning concave holes 611 and the number of the second positioning concave holes 621 in this embodiment are respectively 18, and the number of the balls 64 is 9.

For a further understanding of the invention, its role, the technical means employed, and the efficacy attained by its cooperation, it is believed that the invention will be more fully and specifically understood from the following description.

As shown in fig. 1 and 4, when the automatic compensation device 100 is assembled integrally and is installed and positioned with respect to the brake disc 200, there is a gap between the first brake unit 20 and the first end surface 210, and between the second brake unit 30 and the second end surface 220 in the unused state (factory state).

As shown in fig. 6, when the hand brake is used for the first time and the brake rod 522 is driven to rotate by external force, and the second groove 524 is braked relative to the rolling element 53, the cooperation between the rolling element 53 and the depth changes of the first groove 512 and the second groove 524 is utilized to make the brake disc 521 move away from the positioning element 51 along the axis L, and at the same time, the braked disc 541 is pushed by the brake disc 521, so that the screw element 54 and the threaded sleeve element 55 are linked with the rotational positioning unit 60, the first coming unit 20 moves closer to the first end face 210 (the return element 56 is pressed by the displacement of the brake disc 541, and the return element 56 is hidden in the return elastic force, the spring 57 is also compressed to hide the return elastic force), which originally exists between the first coming unit 20 and the first end face 210, and the second coming unit 30 and the second end face 220, the gap disappears, but another gap is generated between the first side seat 11 and the pushing block 58 and between the second side seat 12 and the pushing seat 42.

As shown in fig. 7, when the pulling rod 522 is no longer operated, the releasing elastic force of the restoring element 56 pushes the pulled disk 541 and the pulling disk 521 to move toward the positioning element 51, and at this time, the action of the depth change of the second groove 524 is utilized, so that the pulling disk 521 moves toward the positioning element 51 and generates a vibration force, when the vibration force is transmitted to the screw element 54 through the spring 57, the spring 57 also releases the elastic force at the same time, and the back clearance between the screw element 54 and the screw element 55 is present, so that the screw element 55 slightly rotates relative to the screw element 54, and the rotation of the screw element 55 relative to the screw element 54 lengthens the overall length of the screw element 54 and the screw element 55 along the axis L, and the pulled disk 541 keeps to abut against the pulling disk 521.

When the screw member 55 rotates relative to the screw member 54, the first positioning concave hole 611 disposed on the screw member 55 rotates relative to the ball 64 (or the screw member 55 drives the ball 64 to rotate relative to the second positioning concave hole 621), the ball 64 can reduce the rotational friction of the screw member 55 and provide the smooth rotation of the screw member 55, and the ball 64 can be nested in the first positioning concave hole 611 and the second positioning concave hole 621, so as to prevent the screw member 55 from rotating and then rotating reversely, thereby ensuring the automatic compensation effect.

And the number of the first positioning concave hole 611 and the second positioning concave hole 621 is twice that of the ball 64, so that the angle of rotation of the first positioning concave hole 611 arranged on the screw member 55 relative to the ball 64 is reduced, and the screw member 55 can be precisely positioned in rotation.

As shown in fig. 8 and 9, when the brake is operated by the piston member, the first brake unit 20 and the second brake unit 30 have a wear condition, and the brake lever 522 is operated by the operator to rotate again, the brake disc 521 rotates relative to the positioning member 51, and the second groove 524 rotates relative to the rolling member 53, the wear stroke is automatically compensated by the cooperation of the rolling member 53 with the depth changes of the first groove 512 and the second groove 524 according to the operation principle of fig. 5 and 6.

Therefore, when the brake lever 522 is driven to rotate by hand braking, the positioning member 51, the brake member 52 and the rolling member 53 of the compensation unit 50 can generate a vibration force, the threaded sleeve member 55 can rotate slightly relative to the threaded rod member 54 by the vibration force, and abrasion can be automatically compensated, so that the brake lever is convenient to use without adjustment and correction by an operator.

In summary, the device for automatically compensating abrasion stroke of hand brake of the present invention has simple structure, easy manufacture and assembly, and can automatically compensate abrasion during hand brake, thereby achieving the purpose of the present invention.