TWM590123U - Hydraulic control structure - Google Patents

Abstract

The creation includes: a body with a hydraulic cylinder and a liquid storage tank, the hydraulic cylinder has a first end and a second end, the second end is provided with an output port, the output port is connected to the brake oil pipe; a piston is provided in the hydraulic cylinder and extends the hydraulic cylinder A central axis moves between the first end and the second end to output the liquid in the hydraulic cylinder from the output port; there is a first channel and a second channel between the hydraulic cylinder and the reservoir, the first channel It has a first axis, and the second channel has a second axis; when viewed along one of the central axes of the piston, there is an angle between the first axis and the second axis, so that the brake oil in the brake hose is generated by high temperature Air bubbles can flow back to the first and second channels and accumulate in the reservoir, to avoid the risk of brake failure due to air bubbles in the hydraulic cylinder when the brake handle is pressed to push the piston.

Description

Hydraulic control structure

This creative department relates to the hydraulic brake structure of bicycles, in particular to a kind of oil that can help the brake oil in the hydraulic cylinder to lead into the liquid storage tank and can be discharged from the first/second channel, to avoid pressing the brake handle, because the hydraulic cylinder contains Bubbles cause brake failure.

Xizhi Taiwan Announcement No. M336909 Bicycle hydraulic brake handle structure, including: The brake body is provided with an accommodating space and a hydraulic chamber, the accommodating space and the hydraulic chamber are perpendicular to each other, the accommodating space inside An actuating oil path and a vertical lubricating oil path are opened at the end and communicate with the oil pressure chamber. The accommodating space is provided with oil inlet holes and oil inlet bolts on both sides of the brake body. The oil pressure chamber penetrates the brake body and one end is connected to the oil pipe The other end of the oil delivery hole is provided with a handle pivot seat on the outside of the oil pressure chamber. A soft pressure regulating sleeve forms a positioning surface at its open end. A fixing member is provided at the upper end of the positioning surface. The pressure regulating hole, a semi-circular ring-shaped fastener is screwed on the upper side of the accommodating space away from the oil pressure chamber, and an oil pressure device includes an actuating cylinder, an oil seal, a sealing ring, an elastic member and a push rod. The actuating cylinder The front and rear ends are provided with grooves for accommodating the oil seal and the seal ring, a lubrication groove is provided between the oil seal and the seal ring, and an elastic member such as a spring is connected to the front end, a groove is provided at the rear end of the actuating cylinder and a push rod is provided One end of the brake handle is provided with a handle pivot hole and a movable part hole. The movable part hole can be sleeved with a movable part. A fine adjustment hole is provided on the front edge of the handle pivot hole and a fine adjustment part is installed.

Moreover, the accommodating space of the brake body can be equipped with a pressure regulating sleeve, and the positioning surface of the pressure regulating sleeve Facing upwards, and placed on the accommodating space with a fixing member cover, the positioning surface and the fixing member are fixed to the brake body with bolts, the hydraulic device is put into the hydraulic chamber from the end of the elastic member, and the brake handle is made with a handle pivot hole and The handle pivot seat of the brake body is pivotally connected, so that the brake handle can be turned, the push rod of the hydraulic device is screwed into the movable part, so that the brake handle can be linked with the push rod, and the locking member is bolted to The accommodation space of the brake body is outside, and a positioning space for the brake handle is formed between the brake body and the locking member. When the bicycle is braking, pull the brake handle to move the movable member to push the push rod, keeping the normally open actuating oil circuit closed by the displacement of the actuating cylinder, so that the brake oil in the oil pipe is squeezed, and then the oil pressure is increased to reach the brake effect. When the brake handle is released, the hydraulic pressure in the tube and the rebound tension of the elastic member cause the actuating cylinder to retreat backward, so that the hydraulic pressure chamber and the actuating oil passage are in communication, the oil pressure is quickly released through the actuating oil passage.

The inside of the pressure regulating sleeve communicates with the pressure regulating hole and is the atmospheric pressure end. The accommodating space and the pressure regulating sleeve are the pressure end of the pipeline. When the brake oil in the pipe expands and contracts due to temperature, it will cause The oil pressure rises and falls. When the oil pressure rises, the brake oil flows into the accommodating space from the actuating oil passage and squeezes the adjustment sleeve so that the oil pressure outside the adjustment sleeve is greater than the atmospheric pressure inside it. When the brake oil shrinks, enough oil pressure is added from the end of the pressure regulating sleeve to achieve the effect of balancing the pressure of the pipeline.

However, because the brake oil pipe is close to the end of the brake disk, the brake oil in the brake oil pipe contains bubbles due to the high temperature of the brake, and because the bubbles are lighter than the brake oil, they will gather in the direction of the oil pressure chamber, causing the brake handle to be pulled to perform the brake action. There is a brake failure.

This, this creation provides a way to help eliminate the brake fluid in the brake hose caused by high temperature bubbles back into the hydraulic cylinder, causing the piston to push the brake fluid in the hydraulic cylinder contains bubbles, causing brake failure.

To achieve the above purpose, this work discloses a hydraulic control structure, which is assembled on the handlebar of a bicycle, and includes: a body with a hydraulic cylinder and a liquid storage tank, the hydraulic cylinder having a first end and a The second end is provided with an output port; a piston is provided in the hydraulic cylinder and extends a central axis of the hydraulic cylinder between the first end and the second end to control the hydraulic pressure The liquid in the cylinder is output from the outlet; a first channel and a second channel are provided between the hydraulic cylinder and the reservoir, the first channel has a first axis, and the second channel has a second axis ; When viewed along a central axis of the piston, there is an angle between the first axis and the second axis.

Wherein, the included angle is less than 180° angle and greater than or equal to 5° angle.

Wherein, the included angle is less than 150° and greater than or equal to 15°.

Wherein, the included angle is less than 120° and greater than or equal to 20°.

Wherein, the included angle is less than 90° angle and greater than or equal to 22° angle.

Wherein, the hydraulic cylinder is provided with a first balancing channel, and the first balancing channel is adjacent to the first channel near the first end of the hydraulic cylinder.

Wherein, the hydraulic cylinder is provided with a second balancing channel, and the second balancing channel is adjacent to the second channel near the first end of the hydraulic cylinder.

Wherein, the opening diameter of the first balancing channel on the wall of the hydraulic cylinder is larger than the opening of the first channel on the wall of the hydraulic cylinder.

Wherein, the opening diameter of the second balancing channel on the wall of the hydraulic cylinder is larger than the opening of the second channel on the wall of the hydraulic cylinder.

Wherein, the first channel has a first opening away from the hydraulic cylinder, the first opening is screwed and sealed by a first screw; the second channel has a second opening away from the hydraulic cylinder The second opening is screwed and sealed by a second screw.

Because the air bubbles are lighter than the brake oil, they will collect on the brake oil. When the brake oil in the brake oil pipe generates bubbles due to high temperature, the bubbles will return to the direction of the hydraulic cylinder.

In this way, when the original installation is installed on the right handlebar of the bicycle, when viewed along one of the central axes of the piston, there is an included angle between the first axis and the second axis, and the included angle is less than 180° and greater than Equal to 5° angle, the height of the first opening of the first channel away from the direction of the hydraulic cylinder is higher than that of the hydraulic cylinder, so that the bubbles in the hydraulic cylinder will gather in the first channel and enter the reservoir, so that the rider presses There is no danger of brake failure when the brake handles are used to brake.

When the original installation is installed on the left handlebar of the bicycle, when viewed along one of the central axes of the piston, there is an included angle between the first axis and the second axis, the included angle is less than 180°, and greater than or equal to 5° Angle, the height of the second opening of the second channel away from the direction of the hydraulic cylinder is higher than that of the hydraulic cylinder, so that the bubbles in the hydraulic cylinder will gather in the second channel and enter the reservoir, so that pressing the brake handle to exercise the brake, There will be no problem of brake failure.

In addition, in this creation, the first and second screws of the first and second channels can be unscrewed to completely release the air bubbles collected in the first and second channels and the liquid storage tank to exclude the first and second channels and Air bubbles in the reservoir. In addition, because the original hydraulic control structure can be installed on the left or right handlebar of the bicycle, so in the manufacturing, as long as a pair of molds are used, the manufacturing cost can be greatly saved.

10‧‧‧Body

11‧‧‧Hydraulic cylinder

111‧‧‧The first end

112‧‧‧The second end

113‧‧‧Output

12‧‧‧Liquid storage tank

121‧‧‧ opening

13‧‧‧ ear

131‧‧‧ matching space

132‧‧‧First hole

133‧‧‧Second hole

14‧‧‧Convex

141‧‧‧through hole

142‧‧‧First hole

143‧‧‧Second hole

15‧‧‧ First channel

151‧‧‧ First opening

152‧‧‧ First screw

153‧‧‧ opening

16‧‧‧Second channel

161‧‧‧Second opening

162‧‧‧Second screw

163‧‧‧ opening

17‧‧‧The first balanced channel

18‧‧‧The second balanced channel

20‧‧‧Hydraulic components

21‧‧‧Elastic parts

22‧‧‧piston

221‧‧‧First concave ring

222‧‧‧Second concave ring

223‧‧‧The first oil seal

224‧‧‧Second oil seal

225‧‧‧Passive rod

23‧‧‧Casing

231‧‧‧Extension

232‧‧‧Storage space

233‧‧‧The first shaft hole

234‧‧‧Second shaft hole

235‧‧‧First convex ring

236‧‧‧Second convex ring

30‧‧‧ bag

31‧‧‧Head

311‧‧‧Concave edge

40‧‧‧brake handle

41‧‧‧Pivot end

411‧‧‧ First side wall

412‧‧‧Second side wall

413‧‧‧ connection surface

414‧‧‧First punch

415‧‧‧Second Perforation

416‧‧‧Through hole

417‧‧‧accommodating space

42‧‧‧Actuator

50‧‧‧ linkage mechanism

51‧‧‧Link

511‧‧‧Projection

512‧‧‧Pressure Department

513‧‧‧ reached the top

514‧‧‧The first screw hole

515‧‧‧screw

516‧‧‧Pipe tube

517‧‧‧Circle

518‧‧‧Elastic ring

519‧‧‧Hook

52‧‧‧Positioning seat

521‧‧‧Flange

522‧‧‧Through hole

523‧‧‧Concave

53‧‧‧Pivot

531‧‧‧Concave neck

54‧‧‧brake tip

541‧‧‧Suppression section

542‧‧‧grip head

55‧‧‧positioning rod

551‧‧‧Second screw hole

552‧‧‧bolt

60‧‧‧Cover sleeve

61‧‧‧brake hole

62‧‧‧Combination holes

63‧‧‧Screw

64‧‧‧screw head

65‧‧‧ matching block

66‧‧‧screw

100a‧‧‧Left handlebar

100b‧‧‧Right handlebar

200‧‧‧brake hose

A1‧‧‧ First axis

A2‧‧‧Second axis

C‧‧‧Central axis

α‧‧‧ included angle

Fig. 1 is a perspective view of the right handlebar of the bicycle.

Figure 2 is a three-dimensional appearance of the creation.

Figure 3 is an exploded perspective view of this creation.

Fig. 4A is a cross-sectional view 1 of this creation. (Assembled on the right handlebar of the bicycle)

Fig. 4B is a sectional view 2 of this creation. (Assembled on the right handlebar of the bicycle)

Fig. 5A is a cross-sectional view of the creation viewed from the central axis of one of the pistons. (Assembled on the right handlebar of the bicycle)

FIG. 5B is a cross-sectional view of the creative ontology in the lateral direction.

Figure 6 is a three-dimensional schematic view of the left handlebar of the bicycle.

Figure 7 is a cross-sectional view of the creation viewed from the central axis of one of the pistons. (Look at the left handlebar of the bicycle)

The detailed content and technical description of this creation are now further explained with examples, but it should be understood that these examples are for illustrative purposes only and should not be construed as limitations on the implementation of the creation.

Please refer to FIG. 1 to FIG. 3 and FIGS. 4A and 4B. This creation discloses a hydraulic control structure, which is installed on the left handlebar 100a/right handlebar 100b of the bicycle, and includes a body 10, a hydraulic component 20, and a bladder 30 , A brake handle 40, a linkage mechanism 50 and a covering sleeve 60. The main body 10 has a hydraulic cylinder 11 having a first end 111 and a second end 112 opposite to the direction of the first end 111. The second end 112 is provided with an output port 113, which is connected to a brake hose 200 The brake oil pipe 200 is connected to a bicycle brake (not shown), and a piston 22 is disposed in the hydraulic cylinder 11 and moves between the first end 111 and the second end 112.

The body 10 is provided with a liquid reservoir 12 located on one side of the hydraulic cylinder 11 and adjacent to the direction of the left handlebar 100a/right handlebar 100b of the bicycle. The diameter of the liquid reservoir 12 is larger than the diameter of the hydraulic cylinder 11 , And opposite to the direction of the second end 112 of the hydraulic cylinder 11 has an opening 121, the opening The caliber of the port 121 is greater than the diameter of the liquid reservoir 12, the caliber of the first end 111 of the hydraulic cylinder 11 is greater than the aperture of the hydraulic cylinder 11, and two lugs 13 extend from both sides of the body 10 adjacent to the first end 111 There is a set of matching spaces 131 between the 13 and the two lugs 13 are provided with a first hole 132 and a second hole 133 perpendicular to the direction of the hydraulic cylinder 11, the body 10 is adjacent to the left handlebar 100a/right handlebar 100b of the bicycle A convex portion 14 is provided in the direction, and the convex portion 14 is provided with a through hole 141 perpendicular to the direction of the hydraulic cylinder 11.

Please refer to FIG. 5A and FIG. 5B again. The body 10 is provided with a first channel 15 and a second channel 16. The first channel 15 and the second channel 16 are used to connect the hydraulic cylinder 11 and the liquid reservoir 12, the first The channel 15 has a first axis A1 and the second channel 16 has a second axis A2. When the hydraulic cylinder 11 is installed on the left/right handlebar of the bicycle, when viewed from one of the central axes C of the piston 22, There is an included angle α between the first axis A1 and the second axis A2. The included angle α is less than 180° and greater than or equal to 5°. The included angle α may be less than 150° and greater than or equal to 15°. The included angle α may also be less than 120° and greater than or equal to 20°. In this embodiment, the included angle α is less than 90° and greater than or equal to 22°.

The hydraulic cylinder 11 is provided with a first balancing channel 17. The first balancing channel 17 is adjacent to the position of the first channel 15 near the first end 111 of the hydraulic cylinder 11. The first balancing channel 17 is on the wall of the hydraulic cylinder 11 The aperture of the upper opening 171 is larger than the opening 153 of the first channel 15 on the wall of the hydraulic cylinder 11. The hydraulic cylinder 11 is provided with a second balancing channel 18. The second balancing channel 18 is adjacent to the position of the second channel 16 of the hydraulic cylinder 11 near the first end 111. The second balancing channel 18 is on the wall of the hydraulic cylinder 11 The upper opening 181 has a larger aperture than the opening 163 of the second passage 16 on the wall of the hydraulic cylinder 11. The first passage 15 has a first opening 151 away from the hydraulic cylinder 11, the first opening 151 is screwed and sealed by a first screw 152, and the second passage 16 has a second opening away from the hydraulic cylinder 11 161, the second opening 161 is screwed and sealed by a second screw 162.

The hydraulic assembly 20 includes an elastic member 21 such as a spring and the piston 22 that can be axially stretched. The elastic member 21 and the piston 22 are sequentially installed into the hydraulic cylinder 11 from the first end 111 of the hydraulic cylinder 11. The outer periphery is provided with a first concave ring 221 and a second concave ring 222, the first concave ring 221 adjacent to the elastic member 21 is sheathed with an elastic first oil seal 223, away from the second concave ring 222 of the elastic member 21 The outer periphery is provided with a second oil seal 224 with elasticity. The outer end of the piston 22 away from the elastic member 21 is provided with a passive rod 225, the passive rod 225 and the piston 22 are perpendicular to each other, and the first end 111 of the hydraulic cylinder 11 is set Equipped with a round set of tubes 23, the sleeve 23 is sleeved on the outer periphery of the piston 22, and the sleeve 23 is provided with a pair of extensions 231 exposed in a sheet shape outside the first end 111. The assembly space 131 of the body 10 has a storage space 232 between the two extensions 231. The extension 231 is provided with a first shaft hole 233 and a second shaft hole 234 perpendicular to the direction of the sleeve 23, each extension The outer wall of 231 is provided with a circular first convex ring 235 and a second convex ring 236, the first shaft hole 233 and the second shaft hole 234 penetrate the first convex ring 235 and the second convex ring 236, respectively, the pair of extensions The portion 231 is assembled in the assembly space 141 of the body 10, and the first convex ring 235 and the second convex ring 236 are inserted into the first hole 142 and the second hole 143 of the ear 13 of the body 10, respectively.

The bladder 30 is installed in the liquid reservoir 12, one end of the bladder 30 has a head 31, the outer peripheral wall of the head 31 is provided with a concave edge 311 perpendicular to the direction of the liquid reservoir 12, the head 31 of the bladder 30 It is assembled in the opening 121 of the liquid storage tank 12.

The brake handle 40 has a pivoting end 41 pivotally connected to the body 10 and an actuating end 42 opposite to the pivoting end 41. The pivoting end 41 is assembled between the two extensions 231 of the sleeve 23 In the space 232, the cross section of the pivoting end 41 is shaped like a first side wall 411, a second side wall 412 facing each other, and a connecting surface 413 connecting the first and second side walls 411, 412. The two side walls 411 and 412 are provided with a first through hole 414 and a second through hole 415, the connecting surface 413 is provided with a through hole 416, and the first 1. An accommodating space 417 is provided between the second side walls 411 and 412.

The linkage mechanism 50 is driven by the brake handle 40 to push the piston 22 to move forward and backward in the hydraulic cylinder 11 and is installed in the storage space 232 of the sleeve 23 and the accommodation space 417 of the brake handle 40 and includes a linkage 51. A positioning seat 52, a pivot 53, a brake tip 54 and a positioning rod 55, the linking member 51 has two ends in different directions, one end is a wedge-shaped protruding portion 511 and the other end is split-shaped with a The pressure-receiving portion 512 and the abutting top 513, the protruding portion 511 is located between the outer wall of the body 10 and the connecting surface 413 of the brake handle 40, the abutting top 513 presses the passive rod 225 on the outside of the piston 22 When the end 42 leans against the left handlebar 100a/right handlebar 100b of the bicycle handlebar, the passive rod 225 of the piston 22 can move toward the first end 111 of the hydraulic cylinder 11 against the top 513, so that the brake oil in the hydraulic cylinder 11 To increase pressure, a first screw hole 514 is provided between the pressure receiving portion 512 and the abutting top 513, the first screw hole 514 is provided with a screw 515 for screwing, and a circular through tube 516 is provided in the middle of the link 51, the link Each side of 51 is provided with an annular ring 517. A circular elastic ring 518 is sleeved on the outer periphery of the annular ring 517, and an elastic hook 519 extends from the elastic ring 518.

The positioning seat 52 is in the shape of a rectangular block and is installed in the accommodating space 417 of the brake handle 40. The positioning seat 52 is provided with a flange 521 which cooperates with the through hole 416 of the brake handle 40, and a through hole 522 passes through the protrusion The edge 521, the through hole 522 are opposite to the through hole 416 of the connecting surface 413 of the brake handle 40, the positioning seat 52 is provided with an arc-shaped concave surface 523 away from the connecting surface 413, and both sides of the concave surface 523 are provided with arc-shaped A concave groove (not shown) is provided for the hook 519 of the elastic ring 518 to be inserted.

The pivot 53 has round rods at both ends and a concave neck 531 smaller than the outer diameter of the pivot 53 is provided in the middle. The pivot 53 is penetrated by the first shaft hole 233 of one of the extensions 231 of the sleeve 23. After penetrating into the first through hole 414 of the first side wall 411 of the brake handle 40, and passing through the ring 517 on one side of the link 43 and the through tube 516 of the link 43 and the ring 517 on the other side of the link 51, Then by the sleeve 23 another The first shaft hole 233 of an extension portion 231 passes through. The screw 515 is screwed into the first screw hole 514 of the link 51, and then the end of the screw 515 is pressed against the concave neck 531 of the pivot shaft 53 to prevent the pivot shaft 53 from moving to the left and right.

The brake tip 54 has round rods on both sides. A polygonal pressing section 541 is provided in the middle of the brake tip 54. A grip head 542 with a triangular diamond shape is provided at one end of the brake tip 54 to provide a hand grip. The brake tip 54 It is inserted through the second hole 133 of one of the lugs 13 of the body 10, so that the round rod on one side passes through the second shaft hole 234 of one of the extensions 231 of the sleeve 23, and the round rod on the other side passes through the sleeve In the second shaft hole 234 of the other extension 231 of the tube 23, the pressing section 541 of the brake tip 54 has at least one flat surface pressed against the outer wall of the linking member 51 against the top 513.

The positioning rod 55 is a round rod with a second screw hole 551 running radially through the middle. The two sides of the positioning rod 55 penetrate the second through holes 415 of the first and second side walls 411 and 412 of the brake handle 40, respectively. The second screw hole 551 is for a bolt 552 to penetrate through the through hole 416 of the connecting surface 413 of the brake handle 40 and pass through the through hole 522 of the positioning seat 52 and then screwed with the second screw hole 551 of the positioning rod 55, the bolt 552 The end of the is pressed against the pressure receiving portion 512 of the link 51, so that the adjustment bolt 552 can finely adjust the angle of the link 43.

The covering sleeve 60 is U-shaped and has opposite ends. The covering sleeve 60 and the protrusion 15 of the body 10 are wrapped around the left handlebar 100a/right handlebar 100b of the bicycle. A polygonal braking hole 61 is provided with a set of matching holes 62 at the other end. A screw 63 has a screw head 64 larger than the outer diameter of the screw 63, and a screw hole 64 is provided adjacent to the screw head 64 to match a shape of the braking hole 61. Block 65, the screw 63 passes through the brake hole 61 and passes through the through hole 151 of the body 10 and the concave edge 311 of the head 31 of the bladder 30 and then passes through the assembly hole 62. The screw 63 is internally connected with a screw 66 Screw together to fix the body 10 to the left handlebar 100a/right handlebar 100b of the bicycle.

Please refer to FIGS. 1 to 3 and FIGS. 4A, 4B, 5A, and 5B for assembly. The right handlebar 100b of the bicycle is an example. The original hydraulic cylinder 11, the reservoir 12, the brake hose 200, the first channel 15 and the second channel 16 are filled with brake oil. When the rider presses the brake handle 40 When the actuating end 42 leans against the right handlebar 100b of the bicycle, the pivot end 41 of the brake handle 40 will rotate with the pivot 53 to rotate the link 51 clockwise, and the top 513 of the link 51 will push the piston The passive rod 225 at the rear of 22 moves the piston 22 toward the first end 111 of the hydraulic cylinder 11 and causes the elastic member 21 to be compressed by the piston 22 in a contracted state, and the hook 519 of the elastic ring 518 is received by the positioning seat 52 When the first oil seal 223 on the piston 22 seals the opening 153 of the first channel 15 on the wall of the hydraulic cylinder 11 and the opening 163 of the second channel 16 on the wall of the hydraulic cylinder 11 The brake oil blocking the liquid reservoir 12 enters the hydraulic cylinder 11, and continuously pressing the brake handle 40 against the right handlebar 100b of the bicycle increases the brake oil in the hydraulic cylinder 11 and the brake oil pipe 200 to achieve the braking effect.

Conversely, when the rider's hand releases the brake handle 40, the oil pressure in the brake hose 200 and the rebound tension of the elastic member 21 will cause the piston 22 to retreat backwards, when the first oil seal 223 on the piston 22 retreats from the first passage 15 When the opening 153 on the wall of the hydraulic cylinder 11 and the opening 163 on the wall of the hydraulic cylinder 11 of the second passage 16 guide the brake oil in the reservoir 12 into the hydraulic cylinder 11, the brake handle 40 receives the piston The reset of 22 is reset by the passive lever 225, and the return force of the hook portion 519 of the elastic ring 518 provided around the outer ring 517 can improve the reset of the brake handle 40.

Since the air bubbles are lighter than the brake oil, they collect on the brake oil. When the brake oil in the brake oil pipe 200 generates air bubbles due to high temperature, the air bubbles return to the direction of the hydraulic cylinder 11.

When this creation is installed on the right handlebar 100b of the bicycle, please refer to FIGS. 5A and 5B, when viewed along the central axis C of the piston 22, the angle α between the first axis A1 and the second axis A2, In this embodiment, the included angle α is an angle of 44°, so that the height of the first passage 15 away from the first opening 151 in the direction of the hydraulic cylinder 11 is higher than that of the hydraulic cylinder 11, so the hydraulic cylinder 11 The air bubbles inside gather toward the first channel 15 and enter the liquid storage tank 12, so that the rider presses the brake handle 40 to exercise the brake, and there is no danger of brake failure.

Similarly, when the original installation is installed on the left handlebar 100a of the bicycle, please refer to FIGS. 6 and 7, when viewed along the central axis C of the piston 22, between the first axis A1 and the second axis A2 With an included angle α, the included angle α is an angle of 44°, so that the height of the second opening 161 in the direction of the second passage 16 away from the hydraulic cylinder 11 is higher than that of the hydraulic cylinder 11, so that the bubbles in the hydraulic cylinder 11 are directed toward the second passage 16 Gather and enter the liquid storage tank 12, so that the brake handle 40 is pressed to apply the brake, there will be no problem of brake failure.

It is worth mentioning that this creation can unscrew the first and second screws 152, 162 of the first and second channels 15, 16 to completely release the bubbles gathered in the first and second channels 15, 16. In order to eliminate the air bubbles in the first and second channels 15, 16, in addition, the original hydraulic control structure can be installed on the left handlebar 100a/right handlebar 100b of the bicycle. Therefore, in the manufacturing, only one mold is used, which can greatly save the manufacturing cost.

This creation has been disclosed in the above with preferred embodiments. However, those skilled in the art should understand that this embodiment is only for depicting this creation, and should not be interpreted as limiting the scope of this creation. It should be noted that all changes and replacements equivalent to this embodiment should be included in the scope of this creation. Therefore, the scope of protection of this creation shall be as defined in the scope of patent application below.

10‧‧‧Body

13‧‧‧ ear

132‧‧‧First hole

14‧‧‧Convex

143‧‧‧Second hole

151‧‧‧ First opening

161‧‧‧Second opening

40‧‧‧brake handle

41‧‧‧Pivot end

42‧‧‧Actuator

53‧‧‧Pivot

54‧‧‧brake tip

60‧‧‧Cover sleeve

64‧‧‧screw head

Claims (10)

A hydraulic control structure, assembled on the handlebar of a bicycle, including: A body, which has a hydraulic cylinder and a liquid storage tank, the hydraulic cylinder has a first end and a second end, and the second end is provided with an output port; A piston disposed in the hydraulic cylinder and extending a central axis of the hydraulic cylinder between the first end and the second end to output the liquid in the hydraulic cylinder from the output port; A first channel and a second channel are provided between the hydraulic cylinder and the reservoir, the first channel has a first axis, and the second channel has a second axis; When viewed along a central axis of the piston, there is an angle between the first axis and the second axis. The hydraulic control structure as described in item 1 of the patent application, wherein the included angle is less than 180° angle and greater than or equal to 5° angle. The hydraulic control structure as described in item 2 of the patent application scope, wherein the included angle is less than 150° and greater than or equal to 15°. The hydraulic control structure as described in item 3 of the patent application scope, wherein the included angle is less than 120° and greater than or equal to 20°. The hydraulic control structure as described in item 4 of the patent application range, wherein the included angle is less than 90° and greater than or equal to 22°. The hydraulic control structure as described in item 1 of the scope of the patent application, wherein the hydraulic cylinder is provided with a first balancing channel, the first balancing channel is adjacent to the first channel near the first end of the hydraulic cylinder. The hydraulic control structure as described in item 6 of the patent application range, wherein the hydraulic cylinder is provided with a second balancing channel, the second balancing channel being adjacent to the second channel and near the first end of the hydraulic cylinder. The hydraulic control structure as described in item 7 of the patent application range, wherein the opening diameter of the first balancing channel on the hydraulic cylinder wall is larger than the opening of the first channel on the hydraulic cylinder wall. The hydraulic control structure as described in item 8 of the patent application range, wherein the opening diameter of the second balance channel on the hydraulic cylinder wall is larger than the opening of the second channel on the hydraulic cylinder wall. The hydraulic control structure as described in item 1 of the patent application range, wherein the first channel has a first opening away from the hydraulic cylinder, the first opening is screwed and sealed by a first screw; the second channel is away The hydraulic cylinder has a second opening in the direction, and the second opening is screwed and sealed by a second screw.

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