TW201518161A - Bicycle brake caliper - Google Patents

Abstract

The bicycle brake caliper of the present invention comprise: a caliper main body, an oil pipe banjo bolt and an oil pipe joint, wherein the oil pipe banjo bolt is screwed in the oil passing screw hole of the caliper main body; one end of the oil pipe banjo bolt exposed out of the caliper main body is provided with a ring cap pressed against the caliper main body and a rotary axle is protruded at an outer side relative to the ring cap; the oil pipe joint is sleeved at the rotary axle of the oil pipe banjo bolt rotatable relative to the oil pipe banjo bolt and comprises a sleeve rotatably sleeved with the rotary axle of the oil pipe banjo bolt and a short pipe protruded to the outer ring of the sleeve for being jointed with the oil pipe; and a stopper is provided on the rotary axle of the oil pipe banjo bolt for restricting the axial movement of the oil pipe joint along the rotary axle. By simply turning the oil pipe joint, the angle of the oil pipe joint can be easily adjusted to make the connected oil pipe lean toward the frame, so as to make bicycle more beautiful and to lower the danger due to being tripped by the oil pipe.

Description

Bicycle brake caliper

The invention relates to a bicycle caliper for bicycles, in particular to a bicycle brake caliper for adjusting the angle of the oil pipe joint.

According to the high convenience and mobility, bicycles have become an indispensable necessity in the daily life of our people. Whether it is used for recreation or as a means of daily life, bicycles can be seen everywhere; especially The emergence of mountain bikes or station wagons will bring people from the traffic activities in the city or between cities to the mountains or the countryside, so that people can get closer to nature, extend their horizons, and then simple traffic. The tool is converted into a versatile leisure sports tool.

Among them, the brake device is an extremely important device for bicycles. The bicycle model is also one of the choices for people to buy bicycles: In recent years, some high-performance bicycles have included disc brakes to enhance bicycle riding. Braking effect; in principle, the bicycle disc brake device is as shown in the first figure, which is composed of a plurality of screws on the axle 11 combined with a brake disc 12, and on the frame (front fork 13 as shown) A brake caliper 20 is provided for the brake disc 12 to extend.

Referring to the second and third figures, the bicycle caliper 20 of the general bicycle is formed by two half portions 21 opposite to the two sides of the brake disc 12, and each of the half portions 21 is provided with a The reciprocating displacement of the disc 12 causes the sheet 22, and another oil-passing bolt 23 is locked between the two halves 21, and a connecting oil pipe is interposed between the oil-passing bolt 23 and one of the half portions. 14 oil The pipe joint 24 is such that the brake handle (not shown) is connected by the connected oil pipe 14.

In use, the brake oil is injected into the oil passage inside the brake caliper 20 by pressing the brake handle, forcing the two brakes to hold the sheet 22 simultaneously on both sides of the brake disc 12 to achieve the axle of the bicycle. 11 stop the car brake effect. However, the oil pipe joint 24 of the conventional brake caliper 20 is sandwiched between the oil-passing bolt 23 and one of the half portions 21 by the force of locking the two halves 21 by the oil-passing bolts 23.

That is, after the assembly of the entire brake caliper 20 is completed, the oil pipe joint 24 can no longer be pulled, so when the same brake caliper 20 is mounted on the frame of different bicycles, it is possible that the oil pipe joint 24 and the frame ( As shown in the first figure, the angle between the front fork 13) is too large, so that the connected oil pipe 14 cannot be attached to the frame, which not only affects the appearance of the car body, but also makes it dangerous to drive. Even the brake caliper can not be surely Install to position and reduce the applicability of brake calipers.

In view of the above, the present invention provides a bicycle brake caliper for adjusting the angle of the oil pipe joint, which is its main purpose.

In order to achieve the above, the bicycle brake caliper of the present invention comprises: a caliper body, an oil-passing bolt, and a oil pipe joint; wherein: the caliper system has a disk passage corresponding to the disk of the brake disk, A piston chamber is disposed on each side of the disc passage, and a piston for mounting the brake to reciprocate the disc passage and a reciprocating displacement to the disc passage is respectively disposed in each piston chamber, and a caliper body is disposed on the caliper body. An oil passageway, an oil passage screw hole communicating with the oil passage passage; the oil passage bolt is screwed on the oil passage screw hole of the caliper body, and a ring for pressing against the caliper body is disposed at an end of the caliper body a cover, a rotating shaft with a predetermined length is protruded from the outer side of the ring cover, and a first oil inlet hole is provided at the rotating shaft, and the whole oil-passing bolt is The first oil outlet hole communicating with the first oil inlet hole and the oil passage channel is disposed at a portion extending from the caliper body; the oil pipe joint is sleeved on the rotating shaft of the oil bolt, and is opposite to the oil-passing bolt Rotating, the integral oil pipe joint has a bushing for splicing with the rotating shaft of the oil-passing bolt, and a second oil-discharging hole communicating with the first oil-injecting hole is arranged in the inner ring of the bushing, and a protruding hole is arranged on the outer ring of the bushing a short pipe for engaging the oil pipe, a second oil inlet hole communicating with the second oil outlet hole at a tail end of the short pipe; and a rotation shaft of the oil passage bolt for restricting axial displacement of the oil pipe joint along the rotating shaft Limiter.

By using the above technical features, the bicycle brake caliper of the present invention can use the piston to install the brake to make the piece, and the oil pipe joint can be connected to the oil pipe, and after the entire caliper body is mounted on the bicycle frame, the simple wrench can be used. The way of the oil pipe joint can easily adjust the angle of the oil pipe joint so that the oil pipe connected to it can be abutted against the frame. If necessary, the belt can be used to fix the oil pipe to the frame to make the car body more beautiful and reduce the damage. The danger caused by the tubing.

According to the above technical feature, the caliper system is formed by a first half portion and a second half portion being relatively engaged and locked, and the first half portion and the second half portion are respectively provided with corresponding joint surfaces, respectively. a joint surface for the half portion and the second half is respectively provided with a class corresponding to the passage of the disk, and a piston chamber is respectively arranged at the first half and the second half; the oil passage hole is provided An oil passage hole that is opposite to the oil passage screw hole and penetrates to the other side of the joint surface of the second half portion is disposed on the joint surface of the first half portion on the joint surface of the second half portion, and the oil passage bolt is attached to the joint surface of the second half portion Passing through the oil passage hole of the second half and screwing into the oil passage screw hole of the first half; and respectively, at the joint of the first half and the second half, at least one set of opposite snails The hole and the screw are perforated, and at least one bolt is pierced through the screw and screwed into the screw hole.

According to the above technical feature, the caliper system is formed by a first half portion and a second half portion being relatively engaged and locked, and the first half portion and the second half portion are respectively provided with corresponding joint surfaces, respectively. The joint faces of the half portion and the second half are respectively provided a piston chamber is provided for each of the first half and the second half; the oil passage screw hole is disposed on the joint surface of the second half and penetrates to the second half The joint surface of the portion is on the other side; the oil-passing bolt is screwed into the oil-passing screw hole from the other side of the joint surface of the second half; and at least at the joint of the first half and the second half, respectively Two sets of corresponding screw holes and screw perforations, and at least two bolts are respectively inserted into the screw holes and screwed into the screw holes.

According to the above technical feature, the caliper system has a cutting passage formed on one side of the disc passage with a cutting passage penetrating to the outside of the caliper body, and a screw cover for closing the cutting passage, the oil passage screw hole is set on the caliper One side of the body, the oil-passing bolt is screwed into the oil-passing screw hole from the outer side of the caliper body.

The oil-passing bolt is provided with a positioning groove at a position outside the sleeve of the corresponding oil pipe joint of the rotating shaft, and the limiting member is a buckle that is buckled into the positioning groove.

The oil-passing bolt is respectively provided with a receiving groove at a section of the rotating shaft with respect to the two sides of the first oil-injecting hole, and a sleeve for the oil pipe joint is arranged in each of the receiving grooves. Stop leaking ring.

The oil-passing bolt is provided with a positioning groove at a position outside the sleeve of the corresponding oil pipe joint of the rotating shaft, and the limiting member is a buckle that is buckled into the positioning groove; the oil-passing bolt is opposite to the rotating shaft thereof A receiving groove is formed in each of the two sides of the first oil inlet hole, and a leakage ring for receiving the bushing of the oil pipe joint is sleeved in each of the receiving grooves.

The caliper body is provided with at least two fitting portions for engaging with the frame of the bicycle; each of the fitting portions is formed by a lug protruding from the caliper body, and a through hole is formed at the lug.

The oil-passing bolt is provided at a tail end of the rotating shaft with a device engaging portion for engaging with the instrument.

The instrument engagement portion is a positive polygon that is opposite to the end surface of the concave shaft Formed by a groove.

The instrument engagement portion is formed by a flat groove that is recessed relative to the end surface of the shaft.

The instrument engagement portion is formed by a cross-shaped recess that is recessed relative to the end surface of the shaft.

The instrument engagement portion is formed by a regular polygonal projection that is opposite the end surface of the convex shaft.

Specifically, the bicycle brake caliper disclosed in the present invention can easily adjust the angle of the oil pipe joint by simply pulling the oil pipe joint after being actually mounted on the frame of the bicycle, so that the connected oil pipe is directed toward the frame. The abutment can not only improve the aesthetics of the bicycle body installed, but also reduce the risk caused by the oil pipe pulling with relatively more active and reliable means, and meet the needs of most bicycle installations. Applicability and practicality.

[Prior technology]

11‧‧‧Axle

12‧‧‧煞盘盘

13‧‧‧ Front fork

14‧‧‧Tube

20‧‧‧ brake calipers

21‧‧‧ half

22‧‧‧煞车来片

23‧‧‧ oil bolt

24‧‧‧Tubing connector

[this invention]

30‧‧‧ caliper body

31‧‧‧ first half

311‧‧ ‧ class

312‧‧‧Piston room

32‧‧‧ second half

321‧‧ ‧ class

322‧‧‧Piston room

33‧‧‧Piston

34‧‧‧ Oil passage

35‧‧‧ oil hole

36‧‧‧Assembly Department

361‧‧ ‧ lugs

362‧‧‧Perforation

37‧‧‧ oil hole

381‧‧‧ screw hole

382‧‧‧ Screw perforation

383‧‧‧ bolt

391‧‧‧Piston room

392‧‧‧Cutting channel

393‧‧‧ screw cap

40‧‧‧ oil bolt

41‧‧‧ ring cover

42‧‧‧ shaft

421‧‧‧Snap slot

422‧‧‧ accommodating slots

43‧‧‧First oil inlet

44‧‧‧First oil hole

45‧‧‧ buckle

46‧‧‧ leaking ring

47‧‧‧Device joint

50‧‧‧Tube connector

51‧‧‧ ring

52‧‧‧Second oil hole

53‧‧‧ short tube

54‧‧‧Second oil inlet

60‧‧‧煞车来片

The first figure is a schematic diagram of the use configuration of a conventional bicycle brake caliper.

The second figure is a structural cross-sectional view of a conventional bicycle brake caliper.

The third figure is a reference diagram of the use configuration of the bicycle brake caliper of the present invention.

The fourth figure is an exploded view of the bicycle brake caliper according to the first embodiment of the present invention.

Fig. 5 is a cross-sectional view showing the structure of a bicycle brake caliper according to a first embodiment of the present invention.

Figure 6 is a structural exploded view of a bicycle brake caliper according to a second embodiment of the present invention.

The seventh figure is a structural decomposition of the bicycle brake caliper according to the third embodiment of the present invention. Figure.

The invention mainly discloses a bicycle bicycle that can meet the installation and use requirements of most bicycles in the workshop, improve the beauty of the bicycle body installed, and reduce the risk caused by the oil pipe pulling with relatively more active and reliable means. The caliper, as shown in the third figure, the bicycle brake caliper of the present invention, the configuration of the bicycle caliper according to the first embodiment of the present invention, and the fifth figure, the structure of the bicycle caliper of the first embodiment of the present invention. As shown in the cross-sectional view, the bicycle brake caliper of the present invention comprises: a caliper body 30, an oil-passing bolt 40, and a oil pipe joint 50; wherein: the caliper body 30 has a disk correspondingly for the brake disk 12 to extend into the disk a piston chamber 312, 322 is disposed on each side of the disc passage, and a piston 33 for mounting the brake to reciprocate the disc 60 and reciprocating toward the disc passage is respectively disposed in each of the piston chambers 311, 321 The caliper body 30 is provided with an oil passage 34 communicating with each of the piston chambers 312 and 322, and an oil passage screw hole 35 communicating with the oil passage 34; The caliper body 30 is provided with at least two mounting portions 36 for engaging with the bicycle frame; each of the mounting portions is provided with a lug 361 protruding from the caliper body 30, and a through hole 362 is formed at the lug 361 to The caliper body 30 is locked to the bicycle frame (such as the front fork 13 shown in the third figure) by means of a screw.

The oil-passing bolt 40 is screwed to the oil-passing screw hole 34 of the caliper body 30. The end of the caliper body 30 is oppositely disposed with a ring cover 41 for pressing against the caliper body 30, and is convex with respect to the outer side of the ring cover 41. A rotating shaft 42 having a predetermined length is disposed, and a first oil inlet hole 43 is defined in the rotating shaft 42. The integral oil-passing bolt 40 is further provided with at least one and the first oil inlet hole at a portion thereof oppositely extending into the caliper body 30. 43 and a first oil outlet 44 communicating with the oil passage 34.

The oil pipe joint 50 is sleeved on the rotating shaft 42 of the oil-passing bolt 40 and is rotatable relative to the oil-passing bolt 40. The integral oil pipe joint 50 has a sleeve 51 for being sleeved with the rotating shaft 42 of the oil-passing bolt 40. The inner ring of the sleeve 51 is provided with a second oil outlet hole 52 communicating with the first oil inlet hole 43. A short tube 53 for engaging the oil pipe 14 is protruded from the outer ring of the sleeve 51, and a short end is provided at the end of the short tube 53. The second oil inlet hole 54 communicates with the second oil outlet hole 52.

And the rotating shaft 42 of the oil-passing bolt 40 is provided with a limiting member for restricting the axial displacement of the oil pipe joint 50 along the rotating shaft; in implementation, the oil-passing bolt 40 is disposed on the shaft of the rotating shaft 42 corresponding to the oil pipe joint 50. The outer position ring of the sleeve 51 is provided with a positioning groove 421. The limiting member is a buckle 45 that is buckled into the positioning groove 421 as shown in the drawing, and the sleeve 51 corresponding to the oil pipe joint 50 of the rotating shaft 42 by the buckle 45 is used. The outer position generates a stopping action for restricting the axial displacement of the oil pipe joint 50 along the rotating shaft, and the oil pipe joint 50 can be prevented from falling off without hindering the rotation of the oil pipe joint 50.

In addition, the oil-passing bolts 40 are respectively provided with a receiving groove 422 at a portion of the rotating shaft 42 opposite to the first oil-injecting hole 43 , and a receiving groove 422 is disposed in each of the receiving grooves 422 . A leak stop ring 46 is provided for the bushing 51 of the oil pipe joint 50. Of course, the oil-passing bolt 40 is provided with a positioning groove 421 at a position outside the sleeve 51 of the corresponding oil pipe joint 50 of the rotating shaft 42. The limiting member is buckled into the positioning groove 421 as shown in the figure. The retaining ring 45 and the receiving groove 422 are respectively disposed at a portion of the rotating shaft 42 opposite to the first oil inlet hole 43 , and a fitting for the oil pipe joint 50 is disposed in each of the receiving grooves 422 . Preferably, the sleeve 51 is abutted against the leak stop ring 46, so that the integral oil bolt 40 has the characteristics of convenient processing and easy assembly and disassembly.

In principle, the caliper body 30 can be locked by a first half 31 and a second half 32. The first half 31 and the second half 32 are respectively provided with corresponding joints. a face 311, 321 corresponding to the disk passage is respectively disposed on the joint surface of the first half 31 and the second half 32, respectively The stages 311, 321 of the half 31 and the second half 32 are respectively provided with a piston chamber 312, 322.

In the embodiment shown in the fourth and fifth figures, the oil passage screw hole 34 is provided on the joint surface of the first half 31, and the joint surface of the second half 32 is provided with an oil passage. The screw holes 35 are opposed to each other and penetrate through the oil passage holes 37 on the other side of the joint surface of the second half portion 32. The oil passage bolts 40 penetrate the oil passage holes 35 of the second half portion 32 and are screwed into the first half portion 31. In the oil passage hole 35, at least a pair of opposite screw holes 381 and screw perforations 382 are provided at the joint of the first half 31 and the second half 32, and at least one bolt 383 is worn. The screw hole 382 is inserted into the screw hole 382, and the first half 31 and the second half 32 are locked and combined into one by the locking function of the oil bolt 40 and the at least one bolt 383. A caliper body 30 having a certain mechanical structural strength.

Of course, in the caliper system, the first half and the second half are relatively interlocked, and the first half and the second half are respectively provided with corresponding engaging faces, in the first half. a joint surface of the second portion and the second half are respectively provided with a class corresponding to the passage of the disk, and a structure of a piston chamber is respectively arranged at the level of the first half and the second half; the oil passage screw hole The 35 series can be disposed on the joint surface of the second half 32 and penetrates to the other side of the joint surface of the second half 32 as shown in the sixth figure; thus, the oil bolt 40 is joined by the second half 32 The other side of the surface is screwed into the oil passage screw hole 35. Further, at the joint of the first half portion 31 and the second half portion 32, at least two sets of opposite screw holes 381 and screw holes 382 are provided, and at least The two bolts 383 are respectively inserted into the screw holes 382 and screwed into the screw holes 381, and the first half 31 and the second half 32 are locked and combined into one by the locking action of the at least two bolts 383. A caliper body 30 having a certain mechanical structural strength.

As shown in the third to fifth figures, when the bicycle brake caliper of the present invention is used, the brakes can be installed by the pistons 33 to make the sheet 60, and the oil pipe is connected. The head 50 is connected to the oil pipe 14, and the brake pipe handle (not shown) is connected by the connected oil pipe 14. In use, the brake oil is injected into the oil passage 34 inside the caliper body 30 by pressing the brake handle, forcing the disc 33 to pass through the piston 33 on both sides of the road together with the brake to cause the sheet 60 to be simultaneously clamped to the brake disc 12 On both sides, the braking effect of stopping the rotation of the bicycle axle 11 is achieved.

In particular, after the entire caliper body 30 is mounted on the bicycle frame (the front fork 13 as shown), the angle of the oil pipe joint 50 can be easily adjusted by simply pulling the oil pipe joint 50 to make the oil pipe connected thereto. 14 Abut against the frame (front fork 13), if necessary, the belt can be used to fix the oil pipe to the frame to make the car body more beautiful and reduce the danger caused by the oil pipe.

Furthermore, the bicycle brake caliper of the present invention can be different according to the piston chamber processing and the installation method of the piston, and the caliper body must be as shown in the fourth and sixth figures, as shown in the above first half 31 and the second half. 32 is relatively interlocking and structural design, or the caliper body can be integrally formed and formed as shown in FIG. 7; in the embodiments shown in the fourth and sixth figures, due to the piston chamber The 312 is formed by cutting the inner side surface of the disc passage, and the two pistons 33 are also mounted on the inner side with respect to the disc passage. Therefore, the integral caliper body 30 is formed by the first half 31 and the The structural design of the two halves 32 relative to the interlocking is preferred.

In the embodiment shown in the seventh figure, the caliper body 30 is directly processed from the outside of the main body of one side of the disc passage into the main body of the other side of the disc passage to process the main body on both sides of the disc passage. The piston chamber 39 is formed such that the piston chamber 391 of the caliper body 30 on one side of the disc passage is formed with a cutting passage 392 penetrating to the outside of the caliper body 30, and the piston 33 is mounted by the 392, and then a screw cap is attached. 393, the cutting passage 392 is closed, so that the caliper body 30 can be designed in an integrally formed structure; of course, in the embodiment shown in the seventh figure, The oil-passing screw hole 35 can be directly disposed on one side of the caliper body 30, and the oil-passing bolt 40 is screwed into the oil-passing screw hole 35 from the outer side of the caliper body 30.

The bicycle brake caliper disclosed in the present invention has the function of locking the first half and the second half of the caliper body 30 in any of the oil-passing bolts 40; as shown in the fourth and fifth figures, The oil-passing bolt 40 is further provided at the rear end of the rotating shaft 42 with a tool engaging portion 47 for engaging with the instrument; in practice, the instrument engaging portion 47 is opposite to the concave end of the rotating shaft 42 as shown in the drawing. The regular polygonal groove is formed (such as a regular hexagonal groove of a predetermined size) to facilitate the removal or installation of the oil-passing bolt 40 using a hexagonal wrench.

Of course, the instrument engagement portion may also be formed by a letter-shaped recess that is recessed relative to the end surface of the rotating shaft, or a cross-shaped recess that is recessed toward the end surface of the rotating shaft, so as to facilitate the use of a flat or Phillips type screw. The driver performs the disassembly or installation of the oil-passing bolt; even, the instrument engagement portion is formed by a regular polygonal projection (such as a regular-sized regular hexagonal projection) that protrudes from the end surface of the rotating shaft to facilitate the use of the sleeve. The wrench carries out the removal or installation of the oil bolt.

Compared with the conventional conventional technology, the bicycle brake caliper disclosed by the present invention can easily adjust the angle of the oil pipe joint to make the connected oil pipe by simply pulling the oil pipe joint after being actually mounted on the bicycle frame. Abutting against the frame not only enhances the aesthetics of the installed bicycle body, but also reduces the risk caused by the oil pipe pulling with relatively more active and reliable means, and meets the installation and use requirements of most bicycles in the workshop. Relatively more applicable and practical.

In summary, the present invention provides a preferred and feasible bicycle brake caliper, and an application for an invention patent according to the law; the technical content and technical features of the present invention have been disclosed above, but those skilled in the art may still be based on the present invention. The disclosure is made without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention should not be limited to the disclosed embodiments, but should include various embodiments without departing from the invention. Replacement and modification, and are covered by the following patent application.

12‧‧‧煞盘盘

14‧‧‧Tube

30‧‧‧ caliper body

31‧‧‧ first half

311‧‧ ‧ class

312‧‧‧Piston room

32‧‧‧ second half

321‧‧ ‧ class

322‧‧‧Piston room

33‧‧‧Piston

34‧‧‧ Oil passage

35‧‧‧ oil hole

36‧‧‧Assembly Department

361‧‧ ‧ lugs

362‧‧‧Perforation

37‧‧‧ oil hole

40‧‧‧ oil bolt

41‧‧‧ ring cover

42‧‧‧ shaft

421‧‧‧Snap slot

422‧‧‧ accommodating slots

43‧‧‧First oil inlet

44‧‧‧First oil hole

45‧‧‧ buckle

46‧‧‧ leaking ring

47‧‧‧Device joint

50‧‧‧Tube connector

51‧‧‧ ring

52‧‧‧Second oil hole

53‧‧‧ short tube

54‧‧‧Second oil inlet

60‧‧‧煞车来片

Claims (10)

The utility model relates to a bicycle brake caliper, comprising: a caliper body having a disc passage corresponding to the disc drive disc, and a piston chamber respectively arranged on two sides of the disc passage, and each of the piston chambers is respectively provided with a brake for mounting a piston which is reciprocally displaceable toward the disk channel, and an oil passage communicating with each piston chamber on the caliper body, an oil passage screw hole communicating with the oil passage; and an oil bolt bolted to the caliper A ring cover for pressing against the caliper body is disposed at an end of the oil sling hole of the body, and a rotating shaft with a predetermined length is protruded from the outer side of the ring cover, and the first shaft is provided at the rotating shaft. The oil hole, the integral oil-passing bolt is further provided with at least one first oil-discharging hole communicating with the first oil-inlet hole and the oil passage channel at a portion thereof extending into the caliper body; a oil pipe joint is sleeved on the oil passage The shaft of the bolt can rotate relative to the oil-passing bolt, and the integral oil pipe joint has a sleeve for connecting with the rotating shaft of the oil-passing bolt, and the inner ring of the sleeve is provided with a second oil that communicates with the first oil inlet hole. Hole, convex on the outer ring of the sleeve a short tube for engaging with the oil pipe, a second oil inlet hole communicating with the second oil outlet hole at the end of the short pipe; and a axial displacement of the oil pipe joint along the rotating shaft is arranged on the rotating shaft of the oil bolt Limits. The bicycle brake caliper according to claim 1, wherein the caliper system is formed by a first half and a second half being oppositely engaged, and the first half and the second half are respectively provided with phases. a corresponding joint surface, a joint surface of the first half and the second half is respectively provided with a corresponding passage for forming a disc passage, and a piston chamber is respectively provided at a level of the first half and the second half; The oil passage screw hole is disposed on the joint surface of the first half, and the oil joint hole on the joint surface of the second half is disposed on the joint surface of the second half and penetrates to the other side of the joint surface of the second half a hole, the oil-passing bolt penetrates into the oil-passing hole of the second half and is screwed into the oil-passing screw hole of the first half; and is respectively in the first half and The joint of the second half is provided with at least one set of opposite screw holes and screw perforations, and at least one bolt penetrates the screw and is screwed into the screw hole. The bicycle brake caliper according to claim 1, wherein the caliper system is formed by a first half and a second half being oppositely engaged, and the first half and the second half are respectively provided with phases. a corresponding joint surface, a joint surface of the first half and the second half is respectively provided with a corresponding passage for forming a disc passage, and a piston chamber is respectively provided at a level of the first half and the second half; The oil passage screw hole is disposed on the joint surface of the second half and penetrates to the other side of the joint surface of the second half; the oil bolt is screwed into the oil passage screw hole from the joint surface of the second half And respectively, at the joint of the first half and the second half, at least two sets of opposite screw holes and screw perforations are provided, and at least two bolts are respectively inserted into the screw holes and screwed into the screw holes. . The bicycle brake caliper according to claim 1, wherein the caliper system has a cutting passage formed on one side of the disc passage with a cutting passage penetrating to the outside of the caliper body, and a screw cover closing the cutting passage. The oil screw hole is disposed on one side of the caliper body, and the oil-passing bolt is screwed into the oil-passing screw hole from the outer side of the caliper body. The bicycle brake caliper according to any one of claims 1 to 4, wherein the oil-passing bolt is provided with a positioning groove at a position outside the sleeve of the shaft corresponding to the oil pipe joint, and the limiting member is a Buckle the retaining ring of the positioning groove. The bicycle brake caliper according to any one of claims 1 to 4, wherein the oil-passing bolt is respectively provided with a receiving groove at a section of the rotating shaft with respect to the two sides of the first oil inlet hole. Each of the accommodating grooves is provided with a leakage ring for contacting the sleeve of the oil pipe joint. The bicycle brake caliper according to any one of claims 1 to 4, wherein the oil-passing bolt is provided with a positioning groove at a position outside the sleeve of the shaft corresponding to the oil pipe joint, and the limiting member is a a buckle that is inserted into the positioning groove; the oil-passing bolt is respectively provided with a receiving groove at a section of the rotating shaft opposite to the first oil inlet hole, Each of the accommodating grooves is provided with a leakage ring for contacting the sleeve of the oil pipe joint. The bicycle brake caliper according to any one of claims 1 to 4, wherein the caliper body is provided with at least two fitting portions for engaging with the bicycle frame; each of the fitting portions is formed by a relatively protruding caliper body The lug is provided with a perforation at the lug. The bicycle brake caliper according to any one of claims 1 to 4, wherein the oil-passing bolt is provided at a rear end of the rotating shaft with an instrument engagement portion for engaging the instrument. The bicycle brake caliper according to claim 9, wherein the instrument engagement portion is formed by a regular polygonal groove that is opposite to the end surface of the concave shaft.