TWI697435B - Anti-lock braking device - Google Patents

Abstract

An anti-lock braking device includes an oil cylinder, a first piston, a second piston, a push component and a magnetic producing component. An oil inlet, an oil outlet and an accommodation space are connected to the pressure adjustment chamber. The first piston is movably located in the pressure adjustment chamber and has a first channel connected to the oil inlet. The second piston is movably located in the pressure adjustment chamber. The outer diameter of the first piston is larger than the outer diameter of the second piston. The push component is movably located in the accommodation space and connected to the second piston. The magnetic producing component is disposed in the accommodation space and surrounds the push component. When the magnetic producing component is electrified, the magnetic producing component produces a magnetic force to move the push component, such that the second piston is in contact with and moves the first piston so as to disconnect the first channel and the pressure adjustment chamber and produce a depressurization space.

Description

Anti-lock brake mechanism for bicycle

The present invention relates to an anti-lock braking mechanism for bicycles, in particular to an anti-lock braking mechanism for bicycles with a magnetic force generator located in an oil pressure regulating cylinder.

With the increasing popularity of sports in the current society, it has driven the public to achieve sports and leisure goals by riding bicycles. Therefore, in order to attract consumers to buy high-end self-propelled bicycles suitable for mountaineering or racing, or low-end bicycles for general public leisure and entertainment, when designing bicycles, manufacturers focus on improving the riding and visual sense of the bicycle. In addition, the safety of riding a bicycle is also one of the key projects.

In terms of braking, which is most relevant to safety, the industry has developed an anti-lock braking system to be installed on bicycles to prevent wheels from locking and slipping during braking, and to improve bicycle braking safety. Generally speaking, the anti-lock braking system uses the difference in the outer diameters of the two pistons to create a pressure relief space during the movement of the adjustment chamber of the adjustment cylinder to achieve the purpose of preventing the wheels from locking up. However, in the existing anti-lock braking system, the driving component that allows the two pistons to move is usually arranged on one side of the outside of the adjusting cylinder, so that the length of the overall anti-lock braking system is too long, which affects the overall appearance of the bicycle.

The present invention is to provide an anti-lock braking mechanism for bicycles, so as to solve the problem that the length of the overall anti-lock braking system in the prior art affects the appearance of the overall bicycle.

An anti-lock braking mechanism for a bicycle disclosed in an embodiment of the present invention includes an oil pressure regulating cylinder, a first piston, a second piston, a driving member and a magnetic force generating member. The oil pressure adjusting cylinder has an oil pressure adjusting groove, an oil inlet passage, an oil outlet passage and an accommodation space. The oil inlet passage, the oil outlet passage and the accommodating space are respectively connected with the oil pressure regulating groove. The first piston is movably located in the oil pressure regulating groove. The first piston has a first oil passage, and the first oil passage communicates with the oil inlet passage. The second piston is movably located in the oil pressure regulating groove, and the outer diameter of the first piston is larger than the outer diameter of the second piston. The driving member is movably located in the accommodating space and connected to the second piston. The magnetic force generating element is arranged in the containing space and surrounds the driving element. When the magnetic force generating member is energized, the magnetic force generating member generates a magnetic thrust on the driving member, so that the driving member drives the second piston to push against the first piston, thereby blocking the communication relationship between the first oil circuit and the oil pressure regulating groove, and A pressure relief volume is generated in the oil pressure regulating tank.

According to the anti-lock braking mechanism for bicycles disclosed in the above embodiments, since the magnetic force generating member that allows the driving member to drive the second piston to move is arranged in the accommodating space of the oil pressure regulating cylinder, and is further arranged to surround the driving member, Therefore, in addition to improving the integrity of the anti-lock braking mechanism, the length of the overall anti-lock braking mechanism is also shortened, thereby increasing the appearance of the bicycle with the anti-lock braking mechanism.

The above description of the content of the present invention and the description of the following embodiments are used to demonstrate and explain the principle of the present invention and provide a further explanation of the scope of the patent application of the present invention.

Please refer to Figure 1 and Figure 2. FIG. 1 is a three-dimensional schematic diagram of an anti-lock braking mechanism of a bicycle according to a first embodiment of the present invention. Fig. 2 is an exploded schematic diagram of Fig. 1.

This embodiment discloses an anti-lock braking mechanism 1 of a bicycle. The anti-lock braking mechanism 1 of a bicycle includes a hydraulic adjusting cylinder 10, a first piston 20, a second piston 30, a driving member 50 and a magnetic force generating member 60. In this embodiment or other embodiments, the anti-lock braking mechanism 1 of the bicycle may also include an elastic member 40, a magnetic conductive plate 70, an assembly cover 80, a fixing ring 90, a magnetic member 100, and a circuit. The board 110, a fixing sleeve 120 and a waterproof cover 130.

Next, please refer to Figures 2 to 5 together. Fig. 3 is a schematic cross-sectional view taken along one of the cutting plane lines of Fig. 1. Fig. 4 is a schematic cross-sectional view taken along another cutting line of Fig. 1. Fig. 5 is a partial enlarged view of Fig. 4.

The oil pressure regulating cylinder 10 includes a body portion 11 and an oil pipe assembly portion 12. The tubing assembly 12 is installed on the main body 11. The body portion 11 has an oil pressure regulating groove 111, an oil outlet passage 112 and an accommodation space 113, and the oil pipe assembly portion 12 has an oil inlet passage 121. The oil pressure regulating groove 111 has a wide diameter section 1111 and a narrow diameter section 1112 that are connected. The width W1 of the wide diameter section 1111 is greater than the width W2 of the narrow diameter section 1112. The oil inlet passage 121 is connected to a side of the wide diameter section 1111 away from the narrow diameter section 1112, and the width W1 of the wide diameter section 1111 is greater than the width W3 of the oil inlet passage 121. The accommodating space 113 is connected to the side of the narrow-diameter section 1112 away from the wide-diameter section 1111, and the oil outlet passage 112 is connected to the junction of the wide-diameter section 1111 and the narrow-diameter section 1112 of the oil pressure regulating groove 111.

Generally speaking, the oil inlet channel 121 is, for example, connected to the bicycle's hydraulic brake handle (not shown) through a pipeline (not shown), and the oil outlet channel 112 is, for example, connected to the bicycle's oil through a pipeline (not shown). Press the brake calipers (not shown).

The first piston 20 is movably located in the oil pressure regulating groove 111, and most of the volume of the first piston 20 is located in the wide diameter section 1111 of the oil pressure regulating groove 111, and the outer diameters D1 and D2 of the opposite ends of the first piston 20 are equal . The first piston 20 has a first oil passage 21 passing through two opposite ends thereof, and the first oil passage 21 is connected to the oil inlet passage 121.

In this embodiment, a stop surface 1113 is provided between the wide diameter section 1111 and the narrow diameter section 1112, and a stop surface 122 is provided between the wide diameter section 1111 of the oil pressure regulating groove 111 and the oil inlet channel 121. The stopping surfaces 1113 and 122 are used to stop the first piston 20 to limit the movement stroke of the first piston 20.

The second piston 30 is movably located in the oil pressure regulating groove 111, and part of the volume of the second piston 30 is located in the narrow section 1112 of the oil pressure regulating groove 111, and part of the volume is located in the accommodating space 113. The first piston 20 is closer to the oil inlet passage 121 than the second piston 30 is. The outer diameter D1 of the first piston 20 adjacent to one end of the second piston 30 is greater than the outer diameter D3 of the second piston 30.

In this embodiment, the oil pipe assembly portion 12 has an inner wall surface 123 located in the oil inlet passage 121, and the inner wall surface 123 faces the first piston 20. Two opposite ends of the elastic member 40 are respectively disposed on the inner wall surface 123 and the first piston 20, and the elastic member 40 is used to provide elastic force for the first piston 20 to move toward the second piston 30.

The driving member 50 is movably located in the accommodating space 113, and the driving member 50 includes a column portion 51 and a flange portion 52. The flange portion 52 protrudes from the cylindrical portion 51 in the radial direction of the cylindrical portion 51. The cylinder portion 51 is connected to a side of the second piston 30 away from the first piston 20. In detail, the second piston 30 is fixed to the cylindrical portion 51 and can move together with the cylindrical portion 51.

The magnetic force generating member 60 is disposed in the accommodating space 113 and surrounds the driving member 50. In detail, the magnetic force generating member 60 includes a bobbin 61 and an electromagnetic coil 62. The bobbin 61 is sleeved on the cylindrical portion 51 of the driving member 50, and the bobbin 61 includes a narrow-diameter portion 611, a first wide-diameter portion 612 and a second wide-diameter portion 613. The first wide-diameter portion 612 and the second wide-diameter portion 613 are respectively connected to opposite ends of the narrow-diameter portion 611, and the width W4 of the first wide-diameter portion 612 and the second wide-diameter portion 613 are equal and larger than the narrow-diameter portion 611 The width W5. The electromagnetic coil 62 is wound around the narrow diameter portion 611, and the electromagnetic coil 62 is located between the first wide diameter portion 612 and the second wide diameter portion 613.

In this embodiment, the body portion 11 of the oil pressure regulating cylinder 10 further has an annular inner wall surface 114 and an annular positioning block 115. The annular inner wall surface 114 surrounds the accommodating space 113 and the annular positioning block 115, and the first wide diameter portion 612 is located between the annular positioning block 115 and the annular inner wall surface 114. In this way, the spool 61 is positioned by the annular positioning block 115 and the annular inner wall 114 to prevent the spool 61 from interfering with the movement of the driving member 50.

In addition, the body portion 11 of the oil pressure regulating cylinder 10 further has an inner top surface 116, and two opposite sides of the inner top surface 116 are respectively connected to the annular inner wall surface 114 and the annular positioning block 115. The first wide diameter portion 612 of the spool 61 has an annular boss 6121, and the annular boss 6121 abuts against the inner top surface 116.

In addition, the second wide-diameter portion 613 of the spool 61 also has an annular boss 6131. The magnetic conductive plate 70 is sleeved on the cylindrical portion 51 of the driving member 50, and the annular boss 6131 of the second wide diameter portion 613 abuts against the magnetic conductive plate 70.

Since the spool 61 may be deformed during the process of winding the electromagnetic coil 62 on the narrow diameter portion 611 of the spool 61, the arrangement of the two annular bosses 6121 and 6131 can ensure that the spool 61 abuts with a small contact area On the inner top surface 116 and the magnetic conductive plate 70, the assembly will not be difficult due to the deformation of the spool 61.

In addition, the second piston 30 has a second oil passage 31 passing through two opposite ends thereof, and the driving member 50 has a communicating oil passage 53 and a guide groove 54. The second oil passage 31 and the guide groove 54 are connected to two opposite ends of the communicating oil passage 53. The width W6 of the guiding groove 54 is greater than the width W7 of the communicating oil passage 53, and there is a difference surface 55 between the guiding groove 54 and the communicating oil passage 53.

The assembly cover 80 is located in the accommodating space 113 and includes a plate portion 81, a guiding column portion 82, an annular wall portion 83 and an assembly column portion 84. The guiding pillar portion 82 and the annular wall portion 83 are connected to the same side of the plate portion 81, and the annular wall portion 83 surrounds the guiding pillar portion 82. The assembly column portion 84 is connected to the other side of the plate portion 81, and the guide column portion 82 is respectively located on two opposite sides of the plate portion 81. The guiding column portion 82 is installed in the guiding groove 54, and the plate portion 81 is located on a side of the second piston 30 away from the first piston 20. The guiding column 82 and the step surface 55 are separated by a distance to form an oil storage chamber 56 therebetween. The width of the oil storage chamber 56 is equal to the width W6 of the guide groove 54 and is slightly larger than the outer diameter D3 of the second piston 30 and slightly smaller than the outer diameter D2 of the end of the first piston 20 away from the second piston 30.

In this embodiment, the side of the magnetic conductive plate 70 facing the plate portion 81 has two first positioning protrusions 71, and the annular wall portion 83 has a second positioning protrusion 831. The shape of the second positioning protrusion 831 is annular. Two opposite sides of the second positioning protrusion 831 respectively abut against the two first positioning protrusions 71, and the second positioning protrusion 831 is closer to the guiding pillar portion 82 than the two first positioning protrusions 71. In this way, the two first positioning protrusions 71 and the second positioning protrusions 831 are used to position the assembly cover 80 to avoid interference of the assembly cover 80 with the movement of the driving member 50. However, the number of the first positioning protrusions 71 is not limited to two. In other embodiments, the number of the first positioning protrusion may be only one.

In addition, the plate portion 81, the guiding column portion 82 and the annular wall portion 83 jointly form a groove 85. The magnetic member 100 is sleeved on the guiding column 82 and located in the groove 85, and the fixing ring 90 is sleeved on the guiding column 82 and fixes the magnetic member 100. The magnetic element 100 is located on a side of the driving element 50 away from the first piston 20, and the magnetic element 100 is used to apply a magnetic force to the driving element 50 to move away from the first piston 20.

The assembly column 84 has a flange 841. The assembly post 84 penetrates the circuit board 110, and the fixing sleeve 120 is disposed on the assembly post 84, so that the circuit board 110 is clamped between the fixing sleeve 120 and the flange 841. The circuit board 110 is electrically connected to the electromagnetic coil 62. The waterproof cover 130 is, for example, installed on the assembly post 84 by a screw lock, and the waterproof cover 130 closes the accommodating space 113.

In this embodiment, the magnetic conductive plate 70, the body portion 11 of the oil pressure regulating cylinder 10 and the driving member 50 are all made of magnetic conductive materials, and the magnetic conductive plate 70 has a magnetic conductive inclined surface 72. The magnetically conductive inclined surface 72 faces the flange portion 52 of the driving member 50, and the magnetically conductive inclined surface 72 and the axis P of the column portion 51 form an acute angle θ. When the electromagnetic coil 62 is energized, the electromagnetic coil 62 will generate a magnetic thrust, and this magnetic thrust will act on the flange of the drive member 50 via the body portion 11 of the oil pressure regulating cylinder 10 and the magnetic permeable slope 72 of the permeable plate 70 The second piston 30 is moved from an initial position to a closed position, and then moved from the closed position to a pressure relief position. In other words, the closed position is between the initial position and the pressure relief position.

Next, as shown in FIGS. 3, 4 and 5, when the second piston 30 is in the initial position, the first piston 20 abuts the stop surface 1113, and the first piston 20 and the second piston 30 are separated. At this time, the first oil passage 21 and the second oil passage 31 communicate with the oil outlet passage 112 through the oil pressure regulating groove 111. In this case, when the user presses the hydraulic brake handle to brake, the hydraulic brake handle will generate oil pressure, and this oil pressure will pass through the oil inlet channel 121, the first oil passage 21, and the oil pressure regulating groove 111 And the oil outlet passage 112 is transmitted to the hydraulic caliper, so that the hydraulic caliper clamps the brake disc provided on the wheel of the bicycle to brake the bicycle.

In this embodiment, since the first oil passage 21 penetrates the opposite ends of the first piston 20, and the outer diameters D1 and D2 of the opposite ends of the first piston 20 are equal, the oil pressure acts on the opposite ends of the first piston 20. The forces at the ends will be equal, so that the first piston 20 is in a force balance state without displacement.

In addition, since the outer diameter D3 of the second piston 30 is slightly smaller than the width W6 of the oil storage chamber 56, the oil pressure acting on the end of the second piston 30 adjacent to the driving member 50 will be greater than the oil pressure acting on the second piston 30 away from The force of one end of the driving member 50 makes the oil pressure acting on the opposite ends of the second piston 30 unbalanced, but the magnetic force of the magnetic member 100 acting on the driving member 50 is still sufficient to maintain the second piston 30 in the initial position. In other embodiments, if the width of the oil storage chamber is larger than the outer diameter of the second piston, a magnetic member with stronger magnetic force is required to maintain the second piston in the initial position.

When the bicycle sensor detects that the bicycle wheel is locked during braking, the circuit board 110 will cause the solenoid 62 to be energized, so that the solenoid 62 generates magnetic thrust. This magnetic thrust will act on the driving member 50 through the body 11 of the hydraulic adjusting cylinder 10 and the magnetic conductive plate 70, so that the driving member 50 overcomes the magnetic attraction force of the magnetic member 100 and drives the second piston 30 to move from the initial position to the closed position . Please refer to Figure 6 and Figure 7 together. 6 is a schematic cross-sectional view of the second piston of FIG. 4 in a closed position. Fig. 7 is a partial enlarged view of Fig. 6.

When the second piston 30 is in the closed position, the second piston 30 abuts against the first piston 20, so that the second oil passage 31 directly connects with the first oil passage 21 to block the communication between the first oil passage 21 and the oil outlet passage 112 Relationship, and a saturated volume A1 is generated in the oil pressure regulating groove 111. The saturated volume A1 is the space between the walls of the first piston 20, the second piston 30, and the body portion 11 in the oil pressure regulating groove 111.

Since the second oil passage 31, the communicating oil passage 53 and the oil storage chamber 56 are in communication with each other, the oil pressure can act on the two opposite ends of the second piston 30 to produce a partial force-pinning effect. Therefore, compared with the magnetic thrust required to push the second piston without the second oil circuit, the magnetic thrust required by the driving member 50 to drive the second piston 30 to move in this embodiment is lower, so the energized solenoid can be relatively saved. 62 electricity.

In addition, by setting the width W6 of the oil storage chamber 56 slightly larger than the outer diameter D3 of the second piston 30, the force of the oil pressure acting on the end of the second piston 30 adjacent to the driving member 50 can be greater than that of the oil pressure acting on the second piston 30. The force of the piston 30 away from one end of the driving part 50 provides assisting force for the movement of the second piston 30 toward the first piston 20, so the magnetic thrust of the solenoid 62 acting on the driving part 50 can be reduced, and the power of the energized solenoid 62 can be further saved . However, the width W6 of the oil storage chamber 56 is not limited to be larger than the outer diameter D3 of the second piston 30. In other embodiments, the width of the oil storage chamber may be equal to the outer diameter of the second piston.

In addition, since the opposite ends of the first piston 20 are in a state of force balance, the first piston 20 will not be displaced due to the movement of the second piston 30 when the second piston 30 moves from the initial position to the closed position. .

Next, please refer to Figure 8 and Figure 9. Fig. 8 is a schematic cross-sectional view of the second piston of Fig. 4 at a pressure relief position. Fig. 9 is a partial enlarged view of Fig. 7.

Next, as shown in FIGS. 8 and 9, the driving member 50 continues to push the second piston 30 so that the second piston 30 slides from the closed position to the pressure relief position, and pushes the first piston 20 to move a distance toward the oil inlet channel 121 . When the second piston 30 is in the pressure relief position, the first piston 20 will compress the elastic member 40 and abut against the stop surface 122, and a pressure relief volume A2 greater than the saturated volume A1 will be generated in the oil pressure regulating groove 111 .

Since the outer diameter D1 of the first piston 20 is greater than the outer diameter D3 of the second piston 30, when the second piston 30 moves from the closed position to the pressure relief position, the moving first piston 20 is positioned between the oil pressure regulating groove 111 The space allowed by the wide diameter section 1111 is larger than the space occupied by the second piston 30 in the wide diameter section 1111 of the oil pressure regulating groove 111. Therefore, when the second piston 30 moves to the pressure relief position, the pressure relief volume A2 formed by the wall surfaces of the first piston 20, the second piston 30 and the body portion 11 in the oil pressure regulating groove 111 will be greater than the saturated volume A1.

It can be seen that the combination of the wide-diameter section 1111 and the first piston 20 and the second piston 30 with different outer diameters can allow the second piston 30 to move from the closed position to the pressure relief position to increase the capacity of the brake fluid. Therefore, the oil pressure in the oil outlet channel 112 is reduced. Therefore, the brake calipers can be slightly relaxed to allow the wheels of the bicycle to resume rolling, so as to prevent the wheels of the bicycle from slipping, thereby improving the safety of the bicycle.

In addition, since the opposite ends of the first piston 20 are in a state of force balance, the second piston 30 only needs to overcome the oil pressure to act on the first piston 20 and the first piston 20 while the second piston 30 pushes the first piston 20 to move together. The difference between the force at one end of the two pistons 30 away from each other, the magnetic force of the magnetic member 100 and the elastic force of the elastic member 40 can reduce the magnetic thrust of the electromagnetic coil 62 acting on the driving member 50 and save the power of the energized electromagnetic coil 62.

Furthermore, by setting the outer diameter D2 of the end of the first piston 20 away from the second piston 30 to be slightly larger than the width W6 of the oil storage chamber 56, the situation that the first piston 20 and the second piston 30 move together can be reduced , The problem of the vibration of the anti-lock brake mechanism 1 of the bicycle caused by the difference in the force between the first piston 20 and the second piston 30 at one end of the distance from each other by the oil pressure.

When the detector detects that the wheel of the bicycle starts to roll, the circuit board 110 stops energizing the solenoid 62. At this time, the magnetic thrust that originally pushed the driving member 50 disappears, so the difference between the forces acting on the first piston 20 and the second piston 30 to move away from each other by the oil pressure, the elastic force exerted by the elastic member 40 on the first piston 20, and The magnetic force exerted by the magnetic member 100 on the driving member 50 will respectively drive the first piston 20, the second piston 30 and the driving member 50 to reset, so that the first piston 20 abuts the stop surface 1113 and the second piston 30 returns to the initial position. In this way, the first oil passage 21 is in communication with the oil outlet passage 112, so that the oil pressure can be transmitted to the brake calipers to continue braking. When the detector detects that the wheels of the bicycle are locked, the above steps are repeated until the bicycle is braked.

In this embodiment, the outer diameter D2 of the end of the first piston 20 away from the second piston 30 is not limited to be slightly larger than the width W6 of the oil storage chamber 56. In other embodiments, the outer diameter of the end of the first piston away from the second piston may be equal to or smaller than the width of the oil storage chamber. In this case, although the magnetic thrust required to move the first piston and the second piston together can be reduced, it will result in insufficient force for the subsequent return of the first piston. Therefore, the elastic coefficient of the elastic element needs to be increased to help the first piston. The piston returns to position.

According to the anti-lock braking mechanism for bicycles disclosed in the above embodiments, since the magnetic force generating member that allows the driving member to drive the second piston to move is arranged in the accommodating space of the oil pressure regulating cylinder, and is further arranged to surround the driving member, Therefore, in addition to improving the integrity of the anti-lock braking mechanism, the length of the overall anti-lock braking mechanism is also shortened, thereby increasing the appearance of the bicycle with the anti-lock braking mechanism.

In addition, through the combination of the first piston and the second piston with a wide diameter section and different outer diameters, the second piston can be moved from the closed position to the pressure relief position, increasing the space for accommodating the brake fluid, thus reducing The oil pressure in the oil outlet channel. Therefore, the brake calipers can be slightly relaxed to allow the wheels of the bicycle to resume rolling, so as to prevent the wheels of the bicycle from slipping, thereby improving the safety of the bicycle.

Furthermore, since the second oil passage, the communicating oil passage and the oil storage chamber are in communication with each other, the oil pressure can act on the two opposite ends of the second piston to produce a partial force-pinning effect. Therefore, compared with the magnetic thrust required to push the second piston without the second oil circuit, the magnetic thrust required by the driving member to drive the second piston to move in the above embodiment is lower, so the power of the energized solenoid can be relatively saved. .

In addition, with the arrangement that the width of the oil storage chamber is slightly larger than the outer diameter of the second piston, the force that can be applied by oil pressure to the end of the second piston adjacent to the driving member is greater than the force applied to the end of the second piston far away from the driving member Therefore, it can reduce the magnetic thrust exerted by the electromagnetic coil on the driving part and further save the power of the energized electromagnetic coil.

Moreover, since the opposite ends of the first piston are in a state of force balance, the second piston only needs to overcome the oil pressure to act on the first piston and the second piston to move away from each other when the second piston pushes the first piston to move together. The difference between the force at one end, the magnetic force of the magnetic member and the elastic force of the elastic member can reduce the magnetic thrust of the electromagnetic coil acting on the driving member and save the power of the energized electromagnetic coil. In this way, the anti-lock braking mechanism of the bicycle has a better mechanical advantage.

Although the present invention is disclosed in the foregoing preferred embodiments as above, it is not intended to limit the present invention. Anyone who is familiar with similar skills can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of patent protection for inventions shall be determined by the scope of patent applications attached to this specification.

1: Anti-lock brake mechanism of bicycle 10: Hydraulic adjusting cylinder 11: Body part 111: Oil pressure regulating groove 1111: wide section 1112: narrow section 1113: stop surface 112: oil outlet channel 113: accommodation space 114: Annular inner wall 115: Ring positioning block 116: inner top surface 12: Tubing Assembly Department 121: oil inlet channel 122: stop surface 123: inner wall surface 20: The first piston 21: The first oil circuit 30: second piston 31: Second oil circuit 40: Elastic part 50: drive parts 51: Cylinder 52: Flange 53: Connecting oil circuit 54: guide groove 55: step side 56: Oil storage chamber 60: Magnetic force generator 61: Spool 611: Narrow diameter part 612: first wide diameter part 6121: Ring boss 613: second wide diameter part 6131: Ring boss 62: Electromagnetic coil 70: Permeable plate 71: The first positioning bump 72: Magnetically permeable slope 80: Assemble the cover 831: second positioning bump 81: Board Department 82: Guiding Post 83: Ring Wall 84: Assemble the column 841: Flange 85: Groove 90: fixed ring 100: Magnetic parts 110: circuit board 120: fixed sleeve 130: Waterproof cover W1, W2, W3, W4, W5, W6, W7: width D1, D2, D3: outer diameter P: axis θ: acute angle A1: saturated volume A2: Pressure relief volume

FIG. 1 is a three-dimensional schematic diagram of an anti-lock braking mechanism of a bicycle according to a first embodiment of the present invention. Fig. 2 is an exploded schematic diagram of Fig. 1. Fig. 3 is a schematic cross-sectional view taken along one of the cutting plane lines of Fig. 1. Fig. 4 is a schematic cross-sectional view taken along another cutting line of Fig. 1. Fig. 5 is a partial enlarged view of Fig. 4. 6 is a schematic cross-sectional view of the second piston of FIG. 4 in a closed position. Fig. 7 is a partial enlarged view of Fig. 6. Fig. 8 is a schematic cross-sectional view of the second piston of Fig. 4 at a pressure relief position. Fig. 9 is a partial enlarged view of Fig. 7.

11: Body part

1111: wide section

1112: narrow section

1113: stop surface

113: accommodation space

114: Annular inner wall

115: Ring positioning block

116: inner top surface

12: Tubing Assembly Department

121: oil inlet channel

122: stop surface

123: inner wall surface

20: The first piston

21: The first oil circuit

30: second piston

31: Second oil circuit

40: Elastic part

51: Cylinder

52: Flange

53: Connecting oil circuit

54: guide groove

55: step side

56: Oil storage chamber

611: Narrow diameter part

612: first wide diameter part

6121: Ring boss

613: second wide diameter part

6131: Ring boss

62: Electromagnetic coil

70: Permeable plate

71: The first positioning bump

72: Magnetically permeable slope

81: Board Department

82: Guiding Post

83: Ring Wall

831: second positioning bump

84: Assemble the column

841: Flange

85: Groove

90: fixed ring

100: Magnetic parts

110: circuit board

120: fixed sleeve

130: Waterproof cover

W4, W5, W6: width

D1, D2, D3: outer diameter

Claims (22)

An anti-lock braking mechanism for bicycles, comprising: an oil pressure adjusting cylinder with an oil pressure adjusting groove, an oil inlet passage, an oil outlet passage and an accommodation space, the oil inlet passage, the oil outlet passage and the The accommodating spaces are respectively connected to the oil pressure regulating groove; a first piston is movably located in the oil pressure regulating groove, and the first piston has a first oil passage which is connected to the oil inlet passage; The second piston is movably located in the oil pressure regulating groove, and the outer diameter of the first piston is larger than the outer diameter of the second piston; a driving member is movably located in the accommodating space and connected to the second piston; And a magnetic force generating member disposed in the accommodating space and surrounding the driving member; wherein, when the magnetic force generating member is energized, the magnetic force generating member generates a magnetic thrust on the driving member, so that the driving member drives the driving member The second piston pushes against the first piston to block the communication relationship between the first oil passage and the oil pressure regulating groove, and a pressure relief volume is generated in the oil pressure regulating groove; wherein, the anti-lock brake of the bicycle The mechanism further includes a magnetically permeable plate, the magnetically permeable plate is sleeved on the drive member, the drive member, at least a part of the oil pressure regulating cylinder, and the magnetically permeable plate are all magnetically permeable materials, when the magnetic force generating member is energized , The magnetic thrust generated by the magnetic force generating element acts on the driving element through the hydraulic regulating cylinder and the magnetic conductive plate. The anti-lock braking mechanism for bicycles as described in item 1 of the scope of patent application, wherein the driving member includes a column portion and a flange portion, and the flange portion protrudes from the column in a radial direction of the column portion Body part, the column body part is connected to the second piston, the magnetic conductive plate is sleeved on the column body part, the magnetic conductive plate has a magnetic conductive inclined surface, the magnetic conductive inclined surface faces the flange part, the magnetic conductive inclined surface and The column The axis of the shaft has an acute angle. For example, the anti-lock braking mechanism for bicycle described in the first item of the patent application, wherein the magnetic force generating member includes an electromagnetic coil and a spool, the electromagnetic coil is wound on the spool, the spool is sleeved on the driving member, and the The magnetic conductive plate abuts one side of the spool. As described in item 3 of the scope of patent application, the anti-lock braking mechanism for bicycles, wherein the spool includes a narrow diameter portion, a first wide diameter portion and a second wide diameter portion, the first wide diameter portion and the first wide diameter portion The two wide-diameter portions are respectively connected to two opposite ends of the narrow-diameter portion, the widths of the first wide-diameter portion and the second wide-diameter portion are both greater than the width of the narrow-diameter portion, and the electromagnetic coil is wound around the narrow-diameter portion and Located between the first wide-diameter portion and the second wide-diameter portion, the second wide-diameter portion abuts the magnetic conductive plate, the oil pressure regulating cylinder further has an annular inner wall surface and an annular positioning block, and the annular inner The wall surface surrounds the accommodating space and the annular positioning block, and the first wide diameter portion is located between the annular positioning block and the annular inner wall surface. For example, the anti-lock braking mechanism for bicycle described in item 4 of the scope of patent application, wherein the hydraulic adjusting cylinder further has an inner top surface, and two opposite sides of the inner top surface are respectively connected to the annular positioning block and the annular inner wall surface Each of the first wide-diameter portion and the second wide-diameter portion has an annular boss, and the two annular bosses respectively abut the inner top surface and the magnetic conductive plate. For example, the anti-lock braking mechanism for bicycles described in item 1 of the scope of patent application further includes an assembly cover, the second piston has a second oil passage, and the driving member has a communicating oil passage and a guide groove, The second oil passage and the guiding groove are connected to two opposite sides of the communicating oil passage, the width of the guiding groove is greater than the width of the communicating oil passage, and there is a difference between the guiding groove and the communicating oil passage, The assembling cover body includes a plate portion and a guiding column portion connected to each other, the guiding column portion is installed in the guiding groove, and the guiding column portion is spaced a distance from the difference surface to form an oil storage chamber, The board part On the side of the second piston away from the first piston. As described in item 6 of the scope of patent application, the anti-lock braking mechanism for bicycles, wherein the width of the oil storage chamber is greater than or equal to the outer diameter of the second piston. For example, the anti-lock braking mechanism for bicycles described in item 6 of the scope of the patent application further includes a magnetic member disposed in the accommodating space and located on the side of the driving member away from the first piston, and the The magnetic member is used for applying magnetic force to the driving member to move away from the first piston. As described in item 8 of the scope of the patent application, the bicycle anti-lock braking mechanism, wherein the assembly cover further includes an annular wall part connected to the guide column part on the same side of the plate part, the An annular wall part surrounds the guiding column part, the plate part, the guiding column part and the annular wall part jointly form a groove, and the magnetic member is arranged in the groove. The anti-lock braking mechanism for bicycles described in item 9 of the scope of patent application further includes a fixing ring arranged in the groove, and the fixing ring fixes the magnetic member. The anti-lock braking mechanism for bicycles described in item 9 of the scope of patent application, wherein the magnetic conductive plate has two first positioning protrusions on one side facing the plate portion, the annular wall portion has a second positioning protrusion, and Two opposite sides of the second positioning protrusion respectively abut against the two first positioning protrusions, and the second positioning protrusion is closer to the guiding column than the two first positioning protrusions. For example, the anti-lock braking mechanism for bicycles described in item 6 of the scope of patent application further includes a circuit board, the assembly cover further includes an assembly column, and the guide column and the assembly column are respectively connected to the board. On two opposite sides of the assembly column, the circuit board is penetrated. For example, the anti-lock braking mechanism for bicycles described in item 12 of the scope of patent application further includes a fixing sleeve, the assembly column has a flange, and the fixing sleeve is sleeved on the assembly column, And the circuit board is clamped between the fixing sleeve and the flange. For example, the anti-lock braking mechanism for bicycles described in item 12 of the scope of patent application further includes a waterproof cover installed on the assembly column, and the waterproof cover closes the accommodating space. For example, the anti-lock braking mechanism for bicycles described in the first item of the scope of patent application further includes an elastic member disposed on the first piston, and the elastic member is used to provide the first piston facing the second piston The elastic force to move in the direction. For example, the anti-lock brake mechanism of bicycle described in the scope of patent application, wherein the oil pressure regulating cylinder includes a body part and an oil pipe assembly part, the oil pipe assembly part is installed on the body part, and the oil inlet channel is located The oil pipe assembling part, the oil pressure regulating groove, the oil outlet passage and the accommodating space are located in the body part, the oil pipe assembling part has an inner wall surface located in the oil inlet passage, and the inner wall surface faces the first piston, Two opposite ends of the elastic member are respectively arranged on the inner wall surface and the first piston. The anti-lock braking mechanism for bicycles described in item 16 of the scope of patent application, wherein the width of the oil pressure adjusting groove is greater than the width of the oil inlet passage, and a stop is provided between the oil pressure adjusting groove and the oil inlet passage The stop surface is used to stop the first piston. In the anti-lock braking mechanism for bicycles described in item 1 of the scope of patent application, the outer diameters of the opposite ends of the first piston are equal. The anti-lock braking mechanism for bicycles as described in item 1 of the scope of patent application, wherein the oil pressure regulating groove has a wide diameter section and a narrow diameter section that are connected, and the width of the wide diameter section is greater than that of the narrow diameter section. Width, the oil inlet passage communicates with a side of the wide-diameter section away from the narrow-diameter section, the accommodating space communicates with a side of the narrow-diameter section away from the wide-diameter section, and there is a side between the wide-diameter section and the narrow-diameter section A stop surface used to stop the first piston. For example, the anti-lock braking mechanism for bicycles described in the first item of the scope of patent application further includes a magnetic member arranged in the accommodating space and located on the side of the driving member away from the first piston, and the The magnetic member is used for applying magnetic force to the driving member to move away from the first piston. An anti-lock braking mechanism for bicycles, comprising: an oil pressure adjusting cylinder with an oil pressure adjusting groove, an oil inlet passage, an oil outlet passage and an accommodation space, the oil inlet passage, the oil outlet passage and the The accommodating spaces are respectively connected to the oil pressure regulating groove; a first piston is movably located in the oil pressure regulating groove, and the first piston has a first oil passage which is connected to the oil inlet passage; The second piston is movably located in the oil pressure regulating groove, and the outer diameter of the first piston is larger than the outer diameter of the second piston; a driving member is movably located in the accommodating space and connected to the second piston; And a magnetic force generating member disposed in the accommodating space and surrounding the driving member; wherein, when the magnetic force generating member is energized, the magnetic force generating member generates a magnetic thrust on the driving member, so that the driving member drives the driving member The second piston pushes against the first piston to block the communication relationship between the first oil passage and the oil pressure regulating groove, and a pressure relief volume is generated in the oil pressure regulating groove; wherein, the anti-lock brake of the bicycle The mechanism further includes an assembly cover, the second piston has a second oil passage, the driving member has a communicating oil passage and a guiding groove, the second oil passage and the guiding groove are connected to opposite sides of the communicating oil passage On both sides, the width of the guiding groove is greater than the width of the communicating oil passage, there is a difference between the guiding groove and the communicating oil passage, and the assembly cover includes a phase Connected a plate portion and a guiding column portion, the guiding column portion is installed in the guiding groove, the guiding column portion is separated from the section of the difference surface to form an oil storage chamber, the plate portion is located in the The second piston is away from one side of the first piston. An anti-lock braking mechanism for bicycles, comprising: an oil pressure adjusting cylinder with an oil pressure adjusting groove, an oil inlet passage, an oil outlet passage and an accommodation space, the oil inlet passage, the oil outlet passage and the The accommodating spaces are respectively connected to the oil pressure regulating groove; a first piston is movably located in the oil pressure regulating groove, and the first piston has a first oil passage which is connected to the oil inlet passage; The second piston is movably located in the oil pressure regulating groove, and the outer diameter of the first piston is larger than the outer diameter of the second piston; a driving member is movably located in the accommodating space and connected to the second piston; And a magnetic force generating member disposed in the accommodating space and surrounding the driving member; wherein, when the magnetic force generating member is energized, the magnetic force generating member generates a magnetic thrust on the driving member, so that the driving member drives the driving member The second piston pushes against the first piston to block the communication relationship between the first oil passage and the oil pressure regulating groove, and a pressure relief volume is generated in the oil pressure regulating groove; wherein, the anti-lock brake of the bicycle The mechanism further includes a magnetic member disposed in the accommodating space and located on a side of the driving member away from the first piston, and the magnetic member is used to apply the driving member in a direction away from the first piston The magnetic force of movement.

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