Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
  • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
  • B60T11/16—Master control, e.g. master cylinders
  • B60T11/18—Connection thereof to initiating means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
  • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
  • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
  • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
  • B60T11/16—Master control, e.g. master cylinders
  • B60T11/165—Single master cylinders for pressurised systems
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
  • F15B15/08—Characterised by the construction of the motor unit
  • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
  • F15B15/1423—Component parts; Constructional details
  • F15B15/1471—Guiding means other than in the end cap

Definitions

• a brake fluid pressure control device and a method for manufacturing the same.
• the present invention relates to a vacuum hydraulic pressure control device, and more particularly to a hydraulic pressure control device provided with a cylinder hole for slidably accommodating a piston.
• this type of brake fluid pressure control device is a vehicle stabilization control device equipped with a solenoid valve that controls the flow of brake fluid, and has a master cylinder function integrated.
• the substrate of such a brake fluid pressure control device is provided with a cylinder hole for accommodating a piston that slides in response to the input of the brake pedal of the driver.
• Patent Document 1 Japanese Patent Application Laid-Open No. 2 0 2 0 — 5 2 8 3 8 5
• a guide member for guiding the sliding of the piston is provided at the opening of the cylinder hole, and the guide member may be formed integrally with the substrate or the substrate. It may be formed as a separate body, and the guide material may later be attached to the opening of the cylinder hole.
• the present invention has been made in the background of the above-mentioned problems, and an object of the present invention is to improve a defect that occurs when the guide member is press-fitted into a silicon hole.
• the brake hydraulic pressure control device is attached to a substrate having a cylinder hole, a piston slidably fitted into the silicon hole, and an opening of the cylinder hole.
• the guide ring has a flange portion extending in the radial direction of the guide ring described above on the lower surface facing the cylinder hole and the guide ring. It has bulges that are arranged at equal intervals on the outer peripheral surface of the guide ring and bulge outward in the radial direction of the guide ring, and the bulges are seen from the axial cross section of the guide ring.
• the guide ring has a tapered portion that expands in the radial direction from the lower surface to the upper surface of the guide ring.
• FIG. 1 is a diagram showing an example of a configuration of a brake fluid pressure control device according to an embodiment of the present invention.
• FIG. 2 is an enlarged view of a peripheral portion of a piston and a perspective view of a guide ring in the brake fluid pressure control device according to the embodiment of the present invention.
• FIG. 3 is a radial cross-sectional view showing a state in which a guide lithog is attached to a substrate in the brake fluid pressure control device according to the embodiment of the present invention.
• FIG. 4 is an axial sectional view showing a state in which a guide lithog is attached to a substrate in the brake fluid pressure control device according to the embodiment of the present invention.
• the brake fluid pressure control device according to the present invention will be described with reference to the drawings.
• the brake hydraulic control device according to the present invention is a vehicle other than the four-wheeled vehicle (two-wheeled vehicle, It may be mounted on a truck, bus, etc.).
• the configuration, operation, and the like described below are examples, and the brake fluid pressure control device according to the present invention is not limited to such a configuration, operation, and the like.
• the same or similar members or parts B are designated by the same reference numerals, or the reference numerals are omitted.
• the detailed structure is simplified or omitted as appropriate.
• FIG. 1 is a diagram showing an example of the configuration of the brake fluid pressure control device 1 according to the embodiment of the present invention.
• the brake hydraulic pressure control device 1 has a wheel cylinder hole 2 3 that communicates with the wheel cylinder, a valve hole 2 4 into which a valve that controls the brake hydraulic pressure is inserted, and a plunger. It has a rectangular base 2 with a motor hole 2 1 into which the motor driving the (not shown) is inserted and a cylinder hole 3 into which the pistos 5 of the master cylinder is inserted.
• the cylinder hole 3 for accommodating the piston 5 is arranged above the side surface 4 of the base 2, and extends from one side surface 4 to the other side surface 4 in the direction perpendicular to the side surface. ..
• the cylinder hole 3 is arranged below the wheel silicon hole 2 3.
• the vertical position of the cylinder hole 3 can be changed as appropriate, and the cylinder hole 3 is above the wheel cylinder hole 2 3 depending on the arrangement of the valve hole 2 4, the motor hole 2 i, and the wheel cylinder hole 2 3. It may be placed on its own, or it may be placed below the motor cylinder.
• a guide ring 8 is attached to the opening 9 on one side surface 4 of the cylinder hole 3 to guide the sliding of the piston 5.
• FIG. 2a shows a cross-sectional view of the piston 5 and the substrate 2 around the piston 5.
• the piston 5 has a substantially cylindrical shape and is connected to the top of the piston rod 6 at the bottom of the bottomed hole 5 a that opens to the right.
• the top of the piston rod 6 is formed in a ball shape, and the piston rod 6 can move in the vertical direction with the top as a fulcrum.
• the piston 5 has a bottomed hole 5 b having an opening on the left side, and is connected to one end of the spring 10 at the bottom of the bottomed hole 5 b.
• annular groove 1 1 is formed on the inner wall of the cylinder hole 3, and a sealing member 1 2 is inserted into the annular groove 1 1.
• the sealing member 1 2 prevents the brake fluid filled in the cylinder hole 3 from leaking to the outside of the substrate 2.
• three annular grooves 1 1 are provided at equal intervals in the axial direction of the cylinder hole 3, and a sealing member 1 2 is inserted into each of the annular grooves 1 1.
• the opening 9 of the cylinder hole 3 is formed as a step portion whose diameter is larger than the inner diameter of the cylinder hole 3.
• the opening 9 is provided with a guide ring 8 that is mounted coaxially with the axis of the silisoda hole and guides the piston 5.
• Figure 2b is a perspective view of the guide ring 8.
• the guide ring 8 has a ring shape, and the lower surface 8 facing the cylinder hole 3 when assembled to the substrate 2 and the upper surface facing the outside of the substrate when assembled to the substrate 2. It has 8 a and a side wall connecting the upper surface and the lower surface.
• the guide ring 8 has a bulging portion 8 c that bulges in the radial direction of the guide ring 8 on the outer peripheral surface 8 d of the side wall.
• a plurality of bulging portions 8 c are arranged at equal intervals in the circumferential direction of the guide ring 8 and are integrally formed with the side wall.
• the bulging portion 8 C is formed as a raised portion of a substantially rectangular parallelepiped, and the tapered portion 8 f (on the lower surface side of the guide ring 8 and extending in the radial direction of the guide ring 8 from the lower surface toward the upper surface). (See Figure 4) is formed.
• the guide ring 8 has a flange portion 8 e extending in the radial direction of the guide ring 8 on the lower surface 8 b.
• the flange portion 8 e forms a flat surface of the guide lithog 8 together with the lower surface 8 b, and when attached to the substrate 2, contacts the step portion of the opening 9 to position the cylinder hole 3 in the axial direction.
• the diameter at the upper end of the tapered portion 8 f of the bulging portion 8 c is larger than the diameter of the flange portion 8 e (see Fig. 4). This is a configuration necessary for temporarily fixing the guide ring 8 to the opening of the cylinder hole 3 by the bulging B 8 c, and the details will be described later.
• [. 0 3 0 Fig. 3 is a view of the state where the guide ring 8 is attached to the substrate 2 as viewed from the axial direction of the cylinder hole 3.
• the bulging portion 8 c is arranged point-symmetrically with respect to the center! 4 of the guide ring 8.
• the fixed portion 8 h arranged between the two adjacent bulging portions 8 c is also arranged pointwise with respect to the center 14 of the guide ring 8.
• four bulging portions 8 c and four fixed portions 8 h are provided.
• the guide ring 8 is temporarily fixed to the substrate 2 by being press-fitted into the opening 9 of the cylinder hole 3. Swelling part
• the diameter of the guide ring 8 including 8 c R d A --A (see Figure 4) is formed slightly larger than the diameter of the opening 9, so it bulges when the guide ring 8 is inserted into the opening 9. A part of part 8 c is plastically deformed, and the guide ring 8 is temporarily fixed to the opening 9. At the same time, the axis of the cylinder hole 3 and the axis of the guide ring 8 are adjusted so as to be coaxial. Also, since the diameter R d B — B (see Fig. 4) of the guide ring including the flange 8 e is formed to be smaller than the diameter of the opening 8 9, the guide ring 8 is inserted into the opening g 9. The flange 8 e is the inner wall of the opening. The guide ring 8 can be temporarily fixed to the substrate without interfering with.
• Fig. 4a shows the A — A cross section in Fig. 3
• Fig. 4 b shows the B — B cross section in Fig. 3.
• the bulge 8 c has the lower surface of the guide ring 8 when viewed from the axial A x cross section of the guide ring 8.
• a taper portion 8 f extending in the radial direction of the guide ring 8 is formed from 8 b toward the upper surface 8 a.
• Figure 4 b shows a cross section of the guide ring 8 including the flange 8 e.
• the flange portion 8 e has the guide ring 8 as it goes from the lower surface 8 b to the upper surface 8 a of the guide ring 8 when viewed from the axial direction A x cross section of the guide ring 8 in the same manner as the bulging portion 8 c.
• a tapered portion 8 g extending in the radial direction of is formed.
• a slight gap d cr is formed between the portion where the diameter of the flange portion 8 e is the largest and the opening portion 9, so that the guide ring 8 is opened. Problems such as surface treatment recording at the flange portion 8 e when inserting into the diameter 6 9 cannot occur.
• the brake fluid pressure control device can achieve the following effects.
• 1 Brake pressure control device 2 Base, 3 Cylinder hole, 4 Side, 5 Piston, 6 Piston rod, 7 Brake pedal, 8 Guide ring, 8 a Top surface, 8 b Bottom surface, 8 c bulge, 8 d Outer surface , 8 e flange part, 8 f taper part, 8 g taper part, 8 h fixed part, 9 opening part, 1 ⁇ spring, 1 1 annular groove, 1 2 seal member, 2 1 motor hole, 2 3 wheel cylinder hole , 24 valve holes, A x axial.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• General Engineering & Computer Science (AREA)
• Transmission Of Braking Force In Braking Systems (AREA)
• Regulating Braking Force (AREA)
• Braking Systems And Boosters (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=79021553

Family Applications (1)

Country Status (5)

Citations (5)

Family Cites Families (10)

• 2020
  • 2020-12-21 JP JP2020211841A patent/JP2022098345A/ja active Pending
• 2021
  • 2021-12-02 JP JP2022570755A patent/JP7505033B2/ja active Active
  • 2021-12-02 DE DE112021006577.7T patent/DE112021006577T5/de active Pending
  • 2021-12-02 CN CN202180085852.3A patent/CN116635282A/zh active Pending
  • 2021-12-02 US US18/257,682 patent/US11981302B2/en active Active
  • 2021-12-02 WO PCT/IB2021/061209 patent/WO2022136984A1/ja not_active Ceased

Patent Citations (5)

Also Published As

Similar Documents

Legal Events