TWM545736U - Brake pad fine tuning device of mechanical disc brake - Google Patents

Description

Mechanical disc brakes

The present invention relates to the technical field of bicycle brake devices, and in particular to a mechanical disc brake to make a fine adjustment device.

At present, more and more bicycle brake systems use disc brakes. At present, the existing disc brake devices are mainly divided into mechanical and hydraulic systems according to the driving method. Among them, the mechanical disc brake calipers have a relatively simple structure and a low manufacturing cost, so they are suitable for general bicycles.

For the structural form and driving control method of the existing mechanical disc brake caliper, reference can be made to the patent application of the "Double Action Mechanical Disc Brake Mechanism" No. M489816, which is described in the first item of the patent application scope: "1. The double-acting mechanical disc brake mechanism is composed of a main body, a first clamping brake group, a second clamping brake group and a driving group for synchronously driving the first and second clamping brake groups through the driving group. The disc has a brake space for the disc to be placed on the main body; and the first clip brake group is disposed on one side of the main body, and the opposite brake space is sequentially provided with a moving disc, a static disc and a piece of the disc The movable disc has a shaft portion pivoted on the main body, and the movable disc is formed with a plurality of equal-angled shifting arc grooves on the surface of the static disc, and the shaft portion of the movable disc passes through the main body at one end for fixing the driving group. a joint portion, and the surface of the stationary disc corresponding to the movable disc is formed with a plurality of oppositely disposed with the movable disc The ball is moved by the arc groove for synchronizing the moving plate and the static plate away from or close to the rotating plate, and the static plate can be driven by the moving plate and the ball to move the piece relative to the disk; the second clamping brake group is disposed in the main braking space. The other side of the brake pad is provided with a static disk, a movable disk and a command piece. The movable disk has a shaft portion pivoted on the main body, and the movable disk is formed with a plurality of surfaces on the surface of the static disk. The angular setting is changed by the arc groove, and one end of the rotating plate shaft portion has a joint portion for the driving group to be fixed, and the surface of the moving plate corresponding to the moving plate is formed with a plurality of balls respectively opposite to the moving plate. The arc slot is configured to synchronize the moving plate and the static disk away from or close to the rotating plate, and the moving plate can be driven by the static disk and the ball to displace the piece relative to the disk; further, the driving group is disposed on the main body and driven The two sides of the group respectively have a coupling hole corresponding to the joint portion of the first and second clamping brakes, and the driving group synchronously activates the moving plate of the first and second clamping brake groups, and a torsion spring is arranged between the driving group and the main body for providing The return preload can be generated after the drive group is rotated. "."

Since the film is worn and thinned with the use time, the patent application has a screw hole in the center of the static disk of the first clamping brake group, and a adjusting bolt is provided for the screw. The adjusting bolt is provided with a adjusting piece on one end of the corresponding piece by a locking piece, so that the piece is set on the adjusting piece, and the adjusting bolt on the rotating static disk can be finely adjusted to make the distance between the piece and the disk. However, as shown in the seventh figure of the above-mentioned patent, since the adjusting bolt and the adjusting piece of the combination are both located deep in the main body of the inner end of the movable plate, the adjusting bolt and the hexagonal hole at the end thereof are not visible from the appearance. The size and adjustment work must be carried out after the hex wrench is extended from the fastener for a certain length to fit the hexagon socket of the adjusting bolt. Because the adjusting bolt is not visible, it is often impossible to directly align the hexagonal hole, resulting in operation. Difficulties and inconveniences are one of the shortcomings in the use of conventional structures.

Because you can't see the relationship between the adjustment bolts, the operation is completely based on the feeling. It is impossible to determine the size of the wrench used. It does not correspond to the hexagonal hole of the adjustment bolt. It often has to undergo multiple tests and it takes a lot of time. In order to complete the adjustment operation, it is the second disadvantage of the use of the conventional structure.

Therefore, how to adjust the conventional patent structure so that the adjusting bolt of the sheet cannot see the size of the hexagonal hole at the end of the sheet, which causes difficulty and inconvenience in operation, and cannot directly select the wrench corresponding to the hexagon socket of the adjusting bolt. Specifications, the need to undergo multiple tests and time-consuming and other shortcomings to improve the creators, is the difficult point to solve this case.

The main purpose of the present invention is to provide a mechanical disc brake to fine-tune the device. The hexagonal hole provided at one end of the caliper seat and the pull arm can be visually seen by the user's eyes. The user can easily push the adjusting wrench directly into the hexagonal hole of the rotating rod to adjust the rotation, which is convenient for use.

The second purpose of the present invention is to provide a mechanical disc brake to fine-tune the device. It is convenient to directly visually measure the size of the hexagonal hole by visually seeing the rotating rod passing through the hexagonal hole of the fixing member and the pulling arm. The wrench tool corresponding to or close to the specification can be directly selected, and the adjustment operation can be accelerated and completed.

In order to achieve the above-mentioned purpose and effect, the creation of the mechanical disc brakes makes the fine-tuning device, including a caliper holder for a disc set and a guide piece, a brake set and a pull arm provided on the caliper seat, wherein: The caliper seat has a brake space for the disc to be worn.

The order set is set in the caliper holder and corresponds to the disc.

The brake assembly is disposed on the caliper seat and corresponds to the slap, and the pull arm is disposed on the caliper seat and corresponds to the brake set. The brake set includes an adjustment member, a static disk member, a movable disk member, a fixing member and a brake member. a rotating rod, the moving disc member has a shaft portion and a retaining ring at the two ends of the adjacent shaft portion, and a multi-angle assembly end, the shaft portion passes through the group of the caliper seat and the pulling arm from the inside to the outside, and the multi-corner assembly end is combined with the pulling arm Fixing, the inner portion of the shaft portion has a circular groove at the inner and outer ends and a middle portion, a fixing screw hole and a retaining wall, and one end of the fixing member is provided with an external thread segment and is screwed into the fixing screw hole, and the fixing member is further a convex ring portion is disposed at one end and fixed to the pull arm, the static disk member is sleeved in the circular groove and the static disk member has an adjusting screw hole extending axially, and the adjusting member has an external thread segment at both ends and a pushing portion, and the externally threaded portion has a hexagonal hole at the end portion, the externally threaded portion is screwed to the adjusting screw hole and the pushing portion abuts against the piece, the rotating rod has one at both ends An outer hexagonal section, a rounded rod section and an outer annular groove in the middle, the outer hexagonal section having a outer end a retaining rod, the rotating rod passes through the group adjusting member, the retaining wall of the movable disc member, the fixing member and the pulling arm, and the outer hexagonal sleeve is set in the hexagonal hole of the adjusting member, and the outer hexagon socket is set by a return spring sleeve and The two ends are elastically caught between the hexagonal hole and the outer rim, and the outer ring groove is located between the retaining wall and the fixing member and is provided with an annular stopper, and the annular blocking member is locked against the retaining wall to limit the rotating rod and the shaft To move, the surface of the disk member corresponding to the movable disk member is respectively formed with a plurality of sliding arc grooves and a ball is relatively disposed, and the movable disk member and the ball act to drive the static disk member, and the adjusting member for driving the screw group to the static disk member Compressing the return spring and pushing it to form a frictional brake displacement relative to the disc. The outer hexagonal section of the rotating rod drives the adjusting member to rotate relative to the adjusting screw hole to form an axial advancement, and the axially advanced adjusting member pushes the sheet Displacement relative to the disc to create a wear gap adjustment.

According to the above description of the present invention, a further technical feature of the present invention is that the caliper holder includes a first seat body and a second seat body on both sides of the disk, and The blade, the brake assembly and the arm assembly are disposed on a first seat body and correspond to the disk. A bearing is arranged between the retaining ring of the movable disk member of the brake group and the first seat body, and the pull arm is coupled with the shaft. A torsion spring is provided between one end of the portion and the first seat body to support the swinging and resetting of the pull arm.

According to the above description of the present invention, a further technical feature of the present invention is that the caliper holder includes a first seat body and a second seat body on both sides of the disk, the first seat body and the second seat. The body is respectively provided with a corresponding piece, a brake group and a pulling arm corresponding to the disk, and a bearing is arranged between the retaining ring of the moving disk of each braking group and the first seat and the second seat, and each arm is combined A torsion spring that supports the swinging and resetting of the pull arm is respectively disposed between one end of the shaft portion and the first seat body and the second seat body.

According to the above description of the present invention, a further technical feature of the present invention is that the convex ring portion of the fixing member is fixed to the pulling arm on the side adjacent to the external thread segment and has a plurality of marking marks on the opposite side equidistant ring. The outer end of the round rod section of the rotating rod is provided with a hexagon socket, and the hexagonal hole is used for the hex wrench to rotate.

According to the above description of the present invention, a further technical feature of the present invention is that the round rod segment of the rotating rod passes through the fixing member and the pulling arm and sleeves an index sleeve on the circumferential side of the outer end of the round rod portion. When the outer end of the sleeve is provided with the finger mark number, and when the rotating rod and the index sleeve are rotated by the hexagonal hole, the index mark of the indicator sleeve is rotated from the relative one mark to the other mark to display the rotation adjustment range.

(100)‧‧‧Disc

(1)‧‧‧ caliper seat

(11)‧‧‧First body

(12)‧‧‧Second body

(2) ‧‧‧

(3) ‧‧‧ brake group

(31)‧‧‧Driving parts

(311)‧‧‧Axis

(312)‧‧‧ Round trough

(313)‧‧‧Fixed screw holes

(314) ‧ ‧ retaining wall

(315) ‧ ‧ retaining ring

(316) ‧‧‧Multi-angle group

(317)‧‧‧ Bearings

(32) ‧‧‧ Threading parts

(321)‧‧‧Adjusting screw holes

(33)‧‧‧Fixed parts

(331)‧‧‧ External thread section

(332) ‧ ‧ convex ring

(333)‧‧‧marking scale

(34) ‧‧‧Adjustment

(341)‧‧‧ External thread section

(342)‧‧‧ hexagonal holes

(343)‧‧‧ Pushing Department

(35) ‧‧‧ rotating stick

(351) ‧ ‧ hex segments

(352)‧‧‧ Hexagonal holes

(353) ‧ ‧ round section

(354)‧‧‧Outer ring groove

(355) ‧ ‧ outer rim

(356)‧‧‧Return spring

(357)‧‧‧Rings

(36) ‧ ‧ indicator sets

(361)‧‧‧ refers to the marking number

(4) ‧ ‧ pull arm

(41)‧‧‧Torque spring

(5) ‧‧‧ adjustment wrench

The first picture is a three-dimensional combination diagram of the creation.

The second figure is a three-dimensional exploded view of the creation.

The third picture is a schematic cross-sectional view of the creation.

The fourth figure is a schematic cross-sectional view of the combined wear and tear gap of the created film and the disk.

The fifth figure is a schematic cross-sectional view of the combination of compensation compensation to form a wear gap between the sheet and the disc.

In order to achieve the above-mentioned purpose and effect, and the technical means and structure adopted, the present invention will be described in detail with reference to the embodiments of the present invention.

Please refer to the first to third figures for a mechanical disc brake to make a fine adjustment device, including a caliper holder (1) disposed on a disc (100) and a caliper seat (1). The blade (2), the brake group (3) and the pull arm (4), wherein: the caliper base (1) has a braking space for the disk (100) to be placed.

The order piece (2) is set in the caliper seat (1) and corresponds to the disk (100).

The brake group (3) is set in the caliper seat (1) and corresponds to the blade (2), and the pull arm (4) is set in the caliper seat (1) and corresponds to the brake group (3), the brake group (3) The utility model comprises an adjusting member (34), a static disk member (32), a movable disk member (31), a fixing member (33) and a rotating rod (35). The movable disk member (31) has a shaft portion (311) And a retaining ring (315) at both ends of the adjacent shaft portion (311), and a multi-angle assembly end (316), the shaft portion (311) passes through the set of the caliper base (1) and the pull arm (4) from the inside to the outside The multi-angle assembly end (316) is fixedly coupled with the pull arm (4). The inner portion of the shaft portion (311) has a circular groove (312), a fixed screw hole (313) and a first block at the inner, outer and middle portions. a fixing member (33) is provided with an externally threaded section (331) and is screwed to the fixing screw hole (313), and the other end of the fixing member (33) is provided with a convex ring portion (332). Fixing against the pull arm (4), the static disk member (32) is sleeved in the circular groove (312) and the static disk member (32) has an adjusting screw hole (321) extending axially, the adjusting member (34) ) having an externally threaded section (341) at both ends and a pusher portion (343), And the externally threaded section (341) has a hexagonal hole (342) at the end, the externally threaded section (341) is screwed to the adjustment screw hole (321) and the pusher portion (343) is abutted against the a sheet (2) having an outer hexagonal section (351) at both ends, a round rod section (353) and an outer annular groove (354) in the middle, the outer hexagonal section (351) having An outer rim (355) of the outer end, the rotating rod (35) passes through the group adjusting member (34), the retaining wall (312) of the movable disc member (31), the fixing member (33) and the pulling arm (4), and The outer hexagonal section (351) is sleeved on the hexagonal hole (342) of the adjusting member (34), and the outer hexagonal section (351) is sleeved by a return spring (356) and the two ends are elastically attracted to the hexagonal hole (342). Between the outer rim (355), the outer ring groove (354) is located between the retaining wall (314) and the fixing member (33) and is provided with a retaining ring (357), and the retaining ring (357) is engaged with The retaining wall (314) is incapable of axial movement by the limit rotating rod (35), and the surface of the rotating disc member (32) corresponding to the movable disc member (31) is respectively formed with a plurality of rolling arc grooves and a ball is relatively inserted, and The disk member (31) and the ball act to drive the static disk member (32), and the adjusting member (34) for driving the screw plate on the static disk member (32) compresses the return spring (356) and pushes the blade (2). The frictional brake displacement is formed on the disc (100), and the outer hexagonal section (351) of the rotating rod (35) drives the adjusting member (34) to rotate relative to the adjusting screw hole (321) to form an axial advancement, and the adjustment of the axial advancement The piece (34) is pushed to cause the piece (2) to be displaced relative to the disk (100) to form a wear gap adjustment.

The foregoing is the main technical feature of the present embodiment, which corresponds to the content of the first item of the patent application scope of the present application, and the purpose and implementation form of the present invention are known in detail, and the technical features described in the remaining subsidiary patent scopes are The detailed description or additional technical features of the first content of the patent application scope, and not to limit the scope of the first paragraph of the patent application scope, it should be noted that the first item of the patent application scope of the present application does not necessarily include the scope of the remaining subsidiary patents. Technical characteristics.

In the above first to third figures, the caliper base (1) includes a first seat body (11) and a second body on both sides of the disk (100). a seat body (12), and the brake piece (3), the brake group (3) and the pull arm (4) are assembled to a first seat body (11) and correspond to the disk (100), the brake group ( 3) A bearing (317) is respectively disposed between the retaining ring (315) of the movable disk member (31) and the first base body (11), and the pulling arm (4) is coupled with one end of the shaft portion (311) and the first A torsion spring (41) is provided between the seat body (11) for supporting the swing arm (4) to swing and reset. Next, the caliper base (1) includes a first seat body (11) and a second seat body (12) on both sides of the disk (100), the first seat body (11) and a second seat. The body (12) is respectively provided with a support piece (2) corresponding to the disk (100), a brake group (3) and a pull arm (4), and a retaining ring of the movable disk member (31) of each brake group (3). A bearing (317) is respectively disposed between the first seat body (11) and the second seat body (12), and each pull arm (4) is coupled with one end of the shaft portion (311) and the first seat body (11). And a torsion spring (41) for supporting the swing arm (4) to swing and reset between the second body (12). Moreover, the convex ring portion (332) of the fixing member (33) is fixed to the pulling arm (4) on the side adjacent to the external thread segment (331) and has a plurality of marking marks on the opposite side equidistant ring (333). The outer end of the round rod section (353) of the rotating rod (35) is provided with a hexagon socket (352) for hex wrench to rotate. Finally, the round rod segment (353) of the rotating rod (35) passes through the fixing member (33) and the pulling arm (4) and sleeves an index sleeve (36) on the circumferential side of the outer end of the round rod portion (353). The indicator sleeve (36) is provided with the index mark (361) at the outer end of the indicator sleeve (36), and the indicator sleeve (36) is indexed when the rotating rod (35) and the index sleeve (36) are rotated by the hexagon socket (352). The mark (361) is rotated from a relative indicator scale (333) to a further indicator scale (333) for comparison to show the degree of rotation adjustment.

In the structure shown in the first to third figures, since the surface of the movable disk member (32) corresponding to the movable disk member (31) is formed with a plurality of sliding arc grooves and a ball is relatively disposed, the braking operation can be performed by the pulling arm. (4) rotating the combined moving disk member (31), driving the static disk member (32) by the moving disk member (31) and the ball, and adjusting the adjusting member of the static disk member (32). The compression return spring (356) can be pushed up to make the piece (2) form a frictional brake displacement relative to the disk (100); and the brake release arm (4) can be The torsion spring 41 drives the pull arm (4) to return to reset, and is reset by the return spring (356) pushing the adjusting member (34) of the static disk member (32).

As shown in the third to fifth figures, the movable disk member (31) has a shaft portion (311) that passes through the inner and outer caliper seats (1) and the pull arms (4) and is fixed to the pull arm (4). And the rotating rod (35) sequentially passes through the group adjusting member (34), the retaining wall (314) of the movable disc member (31), the fixing member (33) and the pulling arm (4), and the outer hexagonal section (351) The sleeve is disposed on the hexagonal hole (342) of the adjusting member (34), and one end of the rotating rod (35) passing through the fixing member (33) and the pulling arm (4) is provided with a hexagonal hole (352) and is on the outer peripheral side. Enclosing an index sleeve (36); by this structural combination, since the hexagonal hole (352) of the rotating rod (35) passes through the fixing member (33) and the pulling arm (4) can be visually observed by the human eye It can be seen that when the original piece (2) of the present creation is used for a period of time, the gap between the disk and the disk (100) is gradually enlarged due to the friction loss, and as shown in the fourth figure, the film is made. (2) When a wear gap larger than the third figure is generated between the disc and the disc (100); the user can easily push the adjusting wrench (5) directly into the hexagonal hole (352) of the rotating rod (35). Performing the rotation adjustment, as shown by the arrow and the dotted line in the fifth figure, is driven by the outer hexagonal section (351) of the rotating rod (35) The adjusting member (34) rotates relative to the adjusting screw hole (321) of the static disk member (32) to form an axial advancement, so that the axially advanced adjusting member (34) is pushed up to make the piece (2) relative to the disk (100) The displacement is used to adjust the wear gap.

In addition, the fixing member (33) is crimped to the convex ring portion (332) fixed by the pulling arm (4), and the equidistant ring array has a plurality of marking scales (333), and the rotating rod (35) passes through the fixing. One end of the piece (33) and the pull arm (4) is provided with an index sleeve (36), so when the user uses a hex wrench to adjust the rotation of the hexagonal hole (352), the index sleeve is used ( 36) When the outer end is provided with a marker number (361), when the rotating rod (35) and the index sleeve (36) are rotated in the hexagonal hole (352), the index number (361) of the index sleeve (36) is relative. A marking scale (333) is turned to the other marking scale (333) for comparison to show the rotation adjustment amplitude, thereby assisting, effectively improving the operation accuracy of the user adjusting the wear gap, and improving the braking effect. The progress of the rate is achieved.

Moreover, as shown in the preceding paragraph, since the rotating rod (35) is visually seen to pass through the fixing member (33) and the hexagonal hole (352) of the pulling arm (4), it is convenient to directly visually measure the hexagonal hole ( 352), and directly select the wrench tool corresponding to or close to the specification, and accelerate the progress and completion of the adjustment operation.

As shown in the first to fifth figures, the caliper base (1) includes a first seat body (11) and a second seat body (12) on both sides of the disk (100), the first seat The body (11) and the second seat body (12) are respectively provided with a corresponding piece (2), a brake group (3) and a pull arm (4) corresponding to the disk (100), and constitute a bilaterally driven brake and The bilateral adjustment structure of the wear gap can be performed from both sides of the second body (12) of the first body (11), but not limited thereto; that is, the creation can also be only for the first seat (11) or only The second body (12) is provided with a piece (2), a brake group (3) and a pull arm (4), and constitutes a structure for unilaterally driving the brake and unilaterally performing the wear gap adjustment; The dilemma and shortcomings in the development of the disc brake wear clearance adjustment technology achieve the following advantages:

1. The hexagonal hole (352) provided at one end of the fixing member (33) and the pulling arm (4) by the rotating rod (35) can be visually seen by the user's eyes, and can be easily used by the user. The adjustment tool is directly inserted into the hexagonal hole (352) of the rotating rod (35) for rotation adjustment, which is convenient for use.

2. By visually seeing the rotating rod (35) passing through the fixing member (33) and the hexagonal hole (352) of the pulling arm (4), it is convenient to directly visually measure the size of the hexagonal hole (352), and directly select The wrench tool corresponding to or close to the specification can speed up the progress and completion of the adjustment operation.

3. The end of the fixing member (33) and the pulling arm (4) is passed through the rotating rod (35) and the index number (361) of the outer end of the index sleeve (36) is set for use with the fixing member ( 33) Crimp-bonded to the arm (4) The marking scale (333) of the equidistant ring on the ring portion (332) shows the rotation adjustment range in comparison, which effectively improves the operation accuracy of the user to adjust the wear gap, and has the progress of improving the braking efficiency.

The above description is only a preferred embodiment for explaining the present creation, and is not intended to impose any form limitation on the creation, so that any modification related to the creation in the same creative spirit is made. Or the changer, other types that can be implemented according to the same effect, should still be included in the scope of protection of this creative intention.

In summary, the creation of the "mechanical disc brakes to make the fine-tuning device", its practicality and cost-effectiveness, is indeed in full compliance with the development of the industry, and the exposed structural creation is also an unprecedented innovative structure. Therefore, its "novelty" should be undoubtedly considered, and this creation can be more effective than the conventional structure. Therefore, it is also "progressive", which fully complies with the requirements of the application requirements for new patents in the Chinese Patent Law. File a patent application in accordance with the law and ask the bureau to review it early and give it affirmation.

(1)‧‧‧ caliper seat

(11)‧‧‧First body

(12)‧‧‧Second body

(2) ‧‧‧

(3) ‧‧‧ brake group

(33)‧‧‧Fixed parts

(332) ‧ ‧ convex ring

(333)‧‧‧marking scale

(36) ‧ ‧ indicator sets

(361)‧‧‧ refers to the marking number

(4) ‧ ‧ pull arm

Claims (5)

The utility model relates to a mechanical disc brake device, which comprises a caliper seat which is arranged relative to a disc plate, and a blade, a brake group and a pull arm which are arranged on the caliper seat, wherein: the caliper seat has a brake space for The disc is disposed; the sheet is set in the caliper holder and corresponds to the disc; the brake assembly is set in the caliper holder and corresponds to the slap, and the pull arm is set in the caliper seat and corresponds to the brake group, and the brake is applied. The set includes an adjusting member, a static disk member, a movable disk member, a fixing member and a rotating rod. The movable disk member has a shaft portion and a retaining ring adjacent to the two ends of the shaft portion, and a multi-angle assembly end. The caliper base and the pull arm are worn from the inside to the outside, and the multi-angle assembly end is combined with the pull arm. The inner portion of the shaft portion has a circular groove at the inner, outer end and the middle portion, a fixing screw hole and a retaining wall. One end of the piece is provided with an external thread segment and is screwed into the fixing screw hole, and the other end of the fixing member is provided with a convex ring portion and is fixed by the pulling arm, the static disk member is set in the circular groove and the static disk member has the shaft The adjusting member has an external thread segment and a pusher portion at both ends, The externally threaded section has a hexagonal hole at the end, the externally threaded section is screwed to the adjustment screw hole and the pusher portion abuts the piece, the rotating rod has an outer hexagonal section at both ends, and a round rod And an outer ring groove in the middle, the outer hexagonal segment has an outer rib at the outer end, the rotating rod passes through the group adjusting member, the retaining wall of the movable disk member, the fixing member and the pulling arm, and the outer hexagon sleeve The hexagonal hole is formed in the adjusting member, and the outer hexagonal portion is assembled by a return spring sleeve, and the two ends are elastically caught between the hexagonal hole and the outer retaining edge. The outer ring groove is located between the retaining wall and the fixing member and is formed with a ring. a retaining member, the annular retaining member is locked against the retaining wall to limit the axial movement of the rotating rod, and the surface of the rotating disc member is formed with a plurality of sliding arc grooves respectively corresponding to the surface of the movable disc member, and a ball is disposed opposite to the movable disc The piece and the ball act to drive the static disk member, and the adjusting member that drives the screw group on the static disk member compresses the return spring and pushes it to form a friction brake displacement with respect to the disk. The outer hexagonal segment of the rotating rod drives the adjusting member relative to the adjusting screw The hole rotates to form an axial advancement, and the axially advanced adjustment member pushes up the piece Displacement of the disk to form a wear gap adjustment. The mechanical disc brake device of claim 1, wherein the caliper base comprises a first seat body and a second seat body on both sides of the disc plate, and the piece, the brake group and the pull arm are used. The system is disposed on a first body and corresponds to the disk, and a bearing is respectively disposed between the retaining ring of the moving disk member of the braking group and the first base body, and the pulling arm is coupled with one end of the shaft portion and the first seat body A torsion spring is provided between the support arm swinging reset. The mechanical disc brake device of claim 1, wherein the caliper base comprises a first seat body and a second seat body on both sides of the disk, the first seat body and a second body. The seat body is respectively provided with a corresponding piece, a brake group and a pulling arm corresponding to the disk, and a bearing is arranged between the retaining ring of the moving disk of each braking group and the first seat body and the second seat body, and each arm is respectively provided A torsion spring for supporting the swinging and resetting of the pulling arm is respectively disposed between one end of the coupling shaft portion and the first seat body and the second seat body. The mechanical disc brake device according to any one of claims 1 to 3, wherein the convex ring portion of the fixing member is fixed to the opposite side of the externally threaded portion against the pulling arm and is on the opposite side. The distance ring has a plurality of scales, and the outer end of the round rod section of the rotating rod is provided with a hexagon socket, and the hexagon socket is used for the hex wrench to rotate. The mechanical disc brake device of claim 4, wherein the round rod segment of the rotating rod passes through the fixing member and the pulling arm, and an index sleeve is sleeved on a circumferential side of the outer end of the round rod portion. When the outer end of the index sleeve is provided with a finger mark number, and the inner hexagon socket rotates the rotating rod and the index sleeve body, the index mark number of the index sleeve body is changed from a relative mark scale to a relative mark scale to display the rotation adjustment range. .