CN112441181A - Hydraulic pressure control unit, brake system, and saddle type vehicle - Google Patents

Abstract

The present invention relates to development of a hydraulic pressure control unit that can be downsized. The invention relates to a hydraulic pressure control unit (1) for a brake system with which a saddle-type vehicle is equipped, comprising: a base body (10) in which a flow channel for brake fluid is formed; a circuit board for operating a hydraulic pressure servo valve for opening and closing the flow passage; a housing (40) in which a circuit board is disposed; and a connecting section (80) for connecting the base body (10) to the housing (40), wherein the connecting section (80) comprises: a concave section (81) formed on the base body (10); and a pin (82) which is supported by the housing (40) and whose end (83) is pressed into the concave section (81).

Description

Hydraulic pressure control unit, brake system, and saddle type vehicle

Technical Field

The present invention relates to a hydraulic pressure control unit for a brake system, a saddle-type vehicle equipped with the brake system, a brake system having the hydraulic pressure control unit, and a saddle-type vehicle having the brake system.

Background

There is conventionally a vehicle provided with a brake system that controls the braking force of wheels through control of the hydraulic pressure of brake fluid. Such a brake system is provided with a hydraulic pressure control unit. Further, the hydraulic pressure control unit is provided with: a base body in which a flow channel for brake fluid is formed; a circuit board for operating a hydraulic pressure servo valve for opening and closing a flow passage for brake fluid; and a housing in which the circuit board is disposed. In addition, the housing is connected to the base body by a bolt as a screw connection member (refer to patent document 1).

Disclosure of Invention

Object of the invention

Here, the saddle type vehicle is a vehicle type having a lower degree of freedom of member arrangement and a lower degree of freedom equipped with a hydraulic pressure control unit than a vehicle such as a motorcycle. Therefore, there is an increasing demand for a smaller hydraulic pressure control unit equipped for a saddle type vehicle. Each bolt is provided with a part forming an external thread, in which the external thread is formed, and a head for attachment of a tool. If a width in a direction perpendicular to an axial direction of the bolt is defined as a horizontal width, the horizontal width of the head portion is larger than that of a portion where the external thread is formed. Therefore, the following problems are posed, namely: it is difficult to downsize the hydraulic pressure control unit according to the related art because it is necessary to secure an arrangement space of a large head of a bolt for connecting the housing with the base.

In view of the above problems, it is an object of the present invention to develop a hydraulic pressure control unit that can be reduced in size compared to hydraulic pressure control units according to the prior art. The invention is also based on the object of developing a brake system provided with such a hydraulic pressure control unit. The invention is also based on the object of developing a saddle-type vehicle provided with such a brake system.

Measures for solving said task

The hydraulic pressure control unit according to the present invention is used for a brake system with which a saddle type vehicle is equipped. The hydraulic pressure control unit includes: a base body in which a flow channel for brake fluid is formed; a circuit board for operating a hydraulic pressure servo valve for opening and closing the flow passage; a housing in which a circuit board is disposed; and a connecting section for connecting the base body with the housing, wherein the connecting section includes a concave section formed on the base body and includes a pin supported by the housing and an end of the pin is pressed into the concave section.

Furthermore, the brake system according to the invention is provided with a hydraulic pressure control unit according to the invention.

Furthermore, a saddle-type vehicle according to the invention is provided with a brake system according to the invention.

THE ADVANTAGES OF THE PRESENT INVENTION

With the hydraulic pressure control unit according to the present invention, the base body and the housing can be connected to each other without using bolts, so that it is not necessary to secure an arrangement space for the bolt head. Therefore, the hydraulic pressure control unit according to the present invention can be downsized compared to the hydraulic pressure control unit according to the related art.

Drawings

In which is shown:

FIG. 1 shows a schematic view of a bicycle equipped with a brake system according to an embodiment of the present invention;

FIG. 2 shows a schematic diagram of a braking system according to an embodiment of the invention;

fig. 3 shows a side view of the inner space of the hydraulic pressure control unit according to an embodiment of the invention;

fig. 4 shows a top view of the inner space of the hydraulic pressure control unit according to an embodiment of the invention;

fig. 5 shows a side view of the inner space of the hydraulic pressure control unit according to an embodiment of the invention;

fig. 6 shows a side view of the inner space of the hydraulic pressure control unit according to an embodiment of the present invention;

fig. 7 shows a view explaining a state of the hydraulic pressure control unit according to the embodiment of the present invention before connecting the coil unit and the main body of the housing with the base;

fig. 8 shows a view explaining a process of supporting a coil unit by being seated in a hydraulic pressure control unit according to an embodiment of the present invention.

Detailed Description

The hydraulic pressure control unit, the brake system, and the saddle type vehicle according to the present invention are explained below with the aid of the drawings.

The following will explain the case where the present invention is applied to bicycles such as two-wheeled vehicles and three-wheeled vehicles. However, the present invention can also be used in other saddle type vehicles than bicycles. Other saddle type vehicles than bicycles are, for example, motorized bicycles, motorized tricycles, and strollers, which are driven by at least one of a combustion motor and an electric motor. The concept "bicycle" refers to every vehicle that can be driven on the road by a force applied to the pedals. That is, the bicycle includes a general bicycle, an electrically-assisted bicycle (electric power assisted vehicle), an electric bicycle, and the like. In particular, the term "motorcycle" or "motor tricycle" refers to a motorcycle including a small motor motorcycle, a small electric motorcycle, and the like.

The structures, operation modes, and the like explained below merely represent examples. The hydraulic pressure control unit, the brake system, and the saddle type vehicle according to the present invention are not limited to these structures, operation manners, and the like. The case where the hydraulic pressure control unit according to the present invention is of the pumpless type is explained as follows. However, the hydraulic pressure control unit according to the invention can be provided with a pump for delivering a brake fluid flow. Further, it is explained below that the brake system according to the present invention implements the anti-lock control only for the braking force generated on the front wheels. However, as an alternative, the brake system according to the present invention can implement anti-lock control only for the braking force generated on the rear wheels. Alternatively, anti-lock control can be implemented not only for the braking force generated at the front wheels but also for the braking force generated at the rear wheels.

In addition, in the respective drawings, the same or similar members or sections are denoted by the same reference numerals or their designations are omitted. In addition, the detailed structure is simplified or omitted accordingly. Moreover, the double explanation is simplified or omitted accordingly.

Equipping bicycles with braking systems

Next, a case where the bicycle is equipped with the brake system according to the embodiment will be explained. FIG. 1 is a schematic view of a bicycle equipped with a brake system according to one embodiment of the present invention. Fig. 1 shows a case where the bicycle 200 is a two-wheeled vehicle. However, the bicycle 200 can also be a tricycle or other type of bicycle.

The bicycle 200 represents an example for a saddle type vehicle provided with a frame 210, a pivoting section 230, a saddle 218, pedals 219, a rear wheel 220 and a rear wheel braking section 260.

For example, the frame 210 includes a control tube 211 axially supporting a steering column 231 of the pivot section 230, an upper tube 212 and a lower tube 213 coupled to the control tube 211, a seat tube 214 coupled to the upper tube 212 and the lower tube 213 and supporting a saddle 218, and a diagonal brace 215 coupled to upper and lower ends of the seat tube 214 and supporting a rear wheel 220 and a rear wheel braking section 260.

The pivoting section 230 includes a steering column 231, a handlebar stem 232 supported by the steering column 231, a steering rod 233 supported by the handlebar stem 232, a brake operating section 240 fitted on the steering rod 233, a front fork 216 coupled to the steering column 231, a front wheel 217 rotatably supported by the front fork 216, and a front wheel braking section 250. The front fork 216 is disposed on both sides of the front wheel 217. The front fork 216 is connected at one end to the steering column 231 and at the other end to the rotation center of the front wheel 217.

The brake actuation section 240 includes a mechanism that functions as an actuation section for front wheel brake section 250 and a mechanism that functions as an actuation section for rear wheel brake section 260. For example, a mechanism serving as a manipulation section of the front wheel braking section 250 is disposed on the right end portion of the steering rod 233, and a mechanism serving as a manipulation section of the rear wheel braking section 260 is disposed on the left end portion of the steering rod 233.

The hydraulic pressure control unit 1 is coupled to the front fork 216 of the pivoting section 230. The hydraulic pressure control unit 1 is a unit that controls the hydraulic pressure of the brake fluid in the front wheel braking section 250. Further, the rear wheel braking section 260 can be configured as a type that generates braking force by an increase in hydraulic pressure of brake fluid or as a type that mechanically generates braking force (for example, a type that generates braking force by generating tension in a wire).

For example, a current supply unit 270 serving as a power source of the hydraulic pressure control unit 1 is mounted on the down tube 213 of the vehicle frame 210. The current supply unit 270 can be a battery or a generator. The generator includes, for example, an object that generates electric current by running operation of the bicycle 200, such as a hub dynamo (nabendonao) that generates electric current by rotation of the front wheel 217 or the rear wheel 220 and an electric motor that generates regenerative electric current of a driving source of the front wheel 217 or the rear wheel 220, and an object that generates electric current by sunlight.

That is, the bicycle 200 is equipped with the brake system 100 including at least the brake operating section 240, the front wheel braking section 250, the hydraulic pressure control unit 1, and the current supply unit 270. The brake system 100 can perform anti-lock control by: the hydraulic pressure of the brake fluid of the front wheel braking section 250 is controlled by the hydraulic pressure control unit 1.

Structure of brake system

Next, the structure of the brake system according to the present embodiment will be explained. FIG. 2 is a schematic view of a braking system according to an embodiment of the present invention. The hydraulic pressure control unit 1 is provided with a base body 10. A master cylinder joint 11, a wheel cylinder joint 12, and a flow passage 13 connecting the master cylinder joint 11 and the wheel cylinder joint 12 are formed in the base body 10.

The flow channel 13 is used for brake fluid. The flow path 13 includes a first flow path 14, a second flow path 15, a third flow path 16, and a fourth flow path 17. The master cylinder joint 11 and the wheel cylinder joint 12 are connected to each other through a first flow passage 14 and a second flow passage 15. Further, an inlet-side end of the third flow path 16 is connected to a path of the second flow path 15.

The brake actuation section 240 is connected to the master cylinder connection 11 via a hydraulic line 101. The brake operating section 240 includes a brake lever 241, a master cylinder 242, and a storage container 243. The master cylinder 242 is provided with a piston section (not shown) that moves according to manipulation of the brake lever 241 by a user and is connected to an inlet side of the first flow passage 14 through the hydraulic line 101 and the master cylinder joint 11. The hydraulic pressure of the brake fluid in the first flow channel 14 is increased or decreased by the movement of the piston section. Further, the brake fluid for the master cylinder 242 is stored in the storage tank 243.

The front wheel brake section 250 is connected to the wheel cylinder connection 12 via the hydraulic line 102. The front wheel braking section 250 includes a wheel cylinder 251 and a rotor 252. The wheel cylinder 251 is fitted on the lower end of the front fork 216. The wheel cylinder 251 is provided with a piston section (not shown) that moves in accordance with the hydraulic pressure in the hydraulic line 102 and is connected to the outlet side of the second flow passage 15 via the hydraulic line 102 and the wheel cylinder joint 12. The rotor 252 is supported by the front wheel 217 and rotates together with the front wheel 217. By the movement of the piston section, brake linings (not shown) are pressed against the rotor 252, whereby the front wheel 217 is braked.

Further, the hydraulic pressure control unit 1 is provided with a hydraulic pressure servo valve 20 that opens and closes the flow passage 13. In the present embodiment, the hydraulic pressure control unit 1 is provided with an inlet valve 21 and an outlet valve 22 as a hydraulic pressure servo valve 20. The inlet valve 21 is provided between an outlet side of the first flow passage 14 and an inlet side of the second flow passage 15 for opening and closing a flow of the brake fluid between the first flow passage 14 and the second flow passage 15. The outlet valve 22 is provided between an outlet side of the third flow passage 16 and an inlet side of the fourth flow passage 17 for opening and closing a flow of the brake fluid between the third flow passage 16 and the fourth flow passage 17. The hydraulic pressure of the brake fluid is controlled by opening and closing the inlet valve 21 and the outlet valve 22.

Furthermore, the hydraulic pressure control unit 1 is provided with a coil 61 for driving the inlet valve 21 and a coil 63 for driving the outlet valve 22. If, for example, the coil 61 is in the non-energized state, the inlet valve 21 releases the brake fluid flow in both directions. If the coil 61 is switched on, the inlet valve 21 is closed in order to interrupt the brake fluid flow. That is, in the present embodiment, the inlet valve 21 functions as a solenoid valve that is opened without current. Furthermore, the outlet valve 22 interrupts the brake fluid flow if, for example, the coil 63 is in a non-energized state. If the coil 63 is energized, the outlet valve 22 is opened to allow brake fluid flow in both directions. That is, in the present embodiment, the outlet valve 22 functions as a solenoid valve that is closed without current.

Furthermore, the hydraulic pressure control unit 1 is provided with a hydraulic accumulator (Akkumulator) 23. The hydraulic accumulator 23 is connected to the outlet side of the fourth flow channel 17 and stores the brake fluid passing through the outlet valve 22.

Further, the hydraulic pressure control unit 1 is provided with a hydraulic pressure sensor 103 for detecting the hydraulic pressure of the brake fluid in the wheel cylinder 251. The hydraulic pressure sensor 103 is provided in the second flow passage 15 or the third flow passage 16.

Furthermore, the hydraulic pressure control unit 1 is provided with a control section 30. The control section 30 is supplied with signals from various sensors, such as, for example, a hydraulic pressure sensor 103 and a wheel speed sensor (not shown) for detecting the speed of the front wheels 217. Furthermore, each of the control sections 30 can be arranged in a group or distributed. The control section 30 can for example comprise a microcontroller and a microprocessor unit. Furthermore, it can comprise objects that can be updated, like for example firmware. Alternatively, it can include a program module or the like implemented by a command of a CPU or the like.

The control section 30 controls the current to the coils 61 and 63. In detail, the control section 30 controls the current flowing to the coil 61 for controlling the driving (opening/closing function) of the inlet door 21. Further, the control section 30 controls the current flowing to the coil 63 for controlling the driving of the outlet valve 22 (opening/closing function). That is, the control section 30 controls the opening/closing functions of the inlet valve 21 and the outlet valve 22 for controlling the hydraulic pressure of the brake fluid in the wheel cylinder 251, i.e., the braking force of the front wheels 217.

In addition, in the present embodiment, of the structures of the control section 30, at least a structure for controlling the current flowing to the coil 61 and the coil 63 is constituted by the circuit board 31 mentioned later. That is, the circuit board 31 controls the current flowing to the coils 61 and 63 for controlling the driving of the inlet valve 21 and the outlet valve 22.

If the front wheel 217 is braked, for example, by actuation of the brake lever 241 by a user, the control section 30 starts the anti-lock control when it is determined from the signals of the wheel speed sensors (not shown) that a locking of the front wheel 217 has occurred or that there is a possibility of locking.

If the antilock control is started, the control section 30 suppresses the pressure formation in the brake fluid in the wheel cylinder 251 by: the control section places the coil 61 in the turned-on state and closes the inlet valve 21 for interrupting the flow of brake fluid from the master cylinder 242 to the wheel cylinder 251. On the other hand, the control section 30 performs pressure reduction in the brake fluid in the wheel cylinder 251 by: this control section places the coil 63 in the turned-on state and opens the outlet valve 22 for allowing the brake fluid to flow from the wheel cylinder 251 to the hydraulic accumulator 23. Thereby eliminating or avoiding locking of the front wheels 217. If the control section 30 determines from the signal of the hydraulic pressure sensor 103 that the pressure of the brake fluid in the wheel cylinder 251 has decreased to a predetermined value, it performs pressure buildup in the brake fluid in the wheel cylinder 251 by: it places the coil 63 in a de-energized state for closing the outlet valve 22 and it places the coil 61 in a short time de-energized state for opening the inlet valve 21. The control section 30 can perform the pressure formation and the pressure reduction only once or repeatedly for the wheel cylinders 251.

If the anti-lock control is finished and the brake lever 241 is reset, the inner side of the master cylinder 242 reaches the atmospheric pressure and the brake fluid in the wheel cylinder 251 is returned to the pilot. Further, if the anti-lock control is finished and the brake lever 241 is reset, the outlet valve 22 is opened. If the pressure of the brake fluid in the flow channel 13 is lower than the pressure of the brake fluid stored in the hydraulic accumulator 23, the brake fluid stored in the hydraulic accumulator 23 is discharged from the hydraulic accumulator 23 without raising the pressure (i.e., without pumping action). The brake fluid flows into the flow passage 13 and eventually flows back into the master cylinder 242.

Structure of hydraulic pressure control unit

The structure of the hydraulic pressure control unit of the brake system according to the present embodiment is explained below. As mentioned below, the hydraulic pressure control unit 1 has a base body 10 and a housing 40 connected to the base body 10. The structure of the hydraulic pressure control unit 1 is explained below with the aid of the hydraulic pressure control unit 1 in a state in which the housing 40 is arranged above the base body 10.

Fig. 3 is a side view of an inner space of a hydraulic pressure control unit according to an embodiment of the present invention. In detail, fig. 3 is a view of the hydraulic pressure control unit 1, as viewed from the direction of arrow a in fig. 4, wherein the front side of the housing 40 in the direction of arrow a is omitted for viewing the hydraulic pressure control unit 1. That is, fig. 3 is a side view of the internal space of the hydraulic pressure control unit 1 in a state where the housing 40 is disposed above the base body 10. Furthermore, a pair of connecting sections 80 is shown in fig. 4. In fig. 3, illustration of the connecting section 80 on the right side of the pattern of fig. 4 is omitted.

Furthermore, a part of one of the plurality of cover fixing sections 50 and a part of the circuit board 31 are shown in cross section in fig. 3.

Fig. 4 is a plan view of an inner space of the hydraulic pressure control unit according to the embodiment of the present invention. In detail, fig. 4 is a plan view of the hydraulic pressure control unit 1 in a state where the cover 48 of the housing 40 and the circuit board 31 are removed.

Fig. 5 is a side view of an inner space of the hydraulic pressure control unit according to the embodiment of the present invention. In detail, fig. 5 is a view of the hydraulic pressure control unit 1 as viewed from the direction of arrow B in fig. 4, wherein the front side of the housing 40 in the direction of arrow B is omitted for viewing the hydraulic pressure control unit 1. That is, fig. 5 is a side view of the internal space of the hydraulic pressure control unit 1 in a state where the housing 40 is arranged above the base body 10. In fig. 5, illustration of the cover fixing section 50 and the connecting section 80 on the front side of the coil unit 60 in the direction of arrow B in fig. 4 is omitted.

Fig. 6 is a side view of an inner space of the hydraulic pressure control unit according to the embodiment of the present invention. In detail, fig. 6 is a view of the connection section 80 of the hydraulic pressure control unit 1 in the direction of arrow C in fig. 4. That is, fig. 6 is a side view of the internal space of the hydraulic pressure control unit 1 in a state where the housing 40 is arranged above the base body 10.

The structure of the hydraulic pressure control unit 1 according to the present embodiment is explained below with reference to fig. 3 to 6. The hydraulic pressure control unit 1 has a base body 10, a housing 40, a coil unit 60, and a circuit board 31.

The base body 10 is, for example, a substantially square component made of an aluminum alloy. The housing 40 is connected to the upper side 18 of the base body 10. In the present embodiment, the housing 40 is connected to the upper surface 18 of the base 10 by adhesion. The base body 10 and the case 40 are joined to each other by adhesion, whereby the airtightness between the base body 10 and the case 40 can be improved. In addition, each surface of the substrate 10 can be flat. Alternatively, each surface can comprise curved portions or steps.

The housing 40 is configured in a box shape, for example, substantially square. In the present embodiment, the case 40 is made of synthetic resin. That is, the housing 40 is a resin molded product. A coil unit 60 and a circuit board 31 are disposed in the housing 40. Further, the housing 40 according to the present embodiment is provided with a main body 41 and a cover 48. The lower surface section 42 of the body 41 is connected to the upper surface 18 of the housing 40 by means of an adhesive. Further, on the main body 41, an opening 43a is formed in a region opposed to the circuit board 31. In the present embodiment, the opening 43a is formed on the upper surface section 43 of the main body 41. The cover 48 is a member that covers the opening 43a of the main body 41. In the present embodiment, the cover 48 is connected to the body 41 by adhesion. In detail, the lower surface section of the cover 48 is bonded to the circumferential edge of the opening 43a of the upper surface section 43 of the body 41. The cover 48 and the body 41 are joined to each other by adhesion, whereby the airtightness between the cover 48 and the body 41 can be improved.

The coil unit 60 is provided with a coil for driving the hydraulic pressure servo valve 20. That is, the coil unit 60 is provided with a coil 61 and a coil 63. Further, the coil unit 60 is provided with a coil case 65 that supports the coils 61 and 63. In the present embodiment, the coil case 65 is provided with an upper surface section 66 disposed above the coils 61 and 63, a lower surface section 67 disposed below the coils 61 and 63, and a side surface section 68 connecting the upper surface section 66 and the lower surface section 67. Further, in the present embodiment, a recess 66c is formed in one of the corner portions of the upper surface section 66 of the coil case 65, which is in the vicinity of the support portion 90 mentioned later. The side sections 68 of the coil housing 65 connect the lower region of the upper surface section 66, in which the recess 66c is not formed, to the lower surface section 67.

The coil unit 60 is connected to the upper side 18 of the base body 10. In the present embodiment, the coil unit 60 is connected to the upper surface 18 of the base 10 by adhesion. Specifically, an opening 42a is formed at a position of the lower surface section 42 of the main body 41 of the case 40 opposed to the coil unit 60. Furthermore, the coil unit 60 is guided through an opening 42a in the lower surface section 42 of the body 41. Furthermore, the lower surface section 67 of the coil housing 65 is connected to the upper surface 18 of the base body 10 by means of an adhesive.

The circuit board 31 is disposed above the coil unit 60. The circuit board 31 is electrically connected to the connection terminals 62 of the coil 61 and the connection terminals 64 of the coil 63. Thereby, the circuit board 31 can control the current flowing to the coil 61 and the coil 63.

Here, as shown in fig. 3 to 5, the hydraulic pressure control unit 1 according to the present embodiment is provided with at least one arm 70 made of synthetic resin. In the present embodiment, an example having two support arms 70 is shown. One of the arms 70 is supported at one end by a first side section 44a which corresponds to one of the side sections of the main body 41 of the housing 40. The other of the arms 70 is supported at one end by a second side section 44b which is a side section opposed to the first side section 44a of the main body 41. These arms 70 are in contact with the upper face 66a of the upper face section 66 of the coil housing 65. In other words, these arms 70 are in contact with the surface opposite to the adhesion surface between the coil unit 60 and the base body 10. Further, each of the arms 70 according to the present embodiment is provided with a projection 71 projecting downward in the vicinity of the end portion on the side opposite to the side supported by the housing 40. The projection 71 is in contact with the upper face 66a of the upper face section 66 of the coil housing 65. That is, in the present embodiment, the projection 71 serves as a contact portion with the coil unit 60 of the arm 70.

In detail, the arm 70 is configured such that immediately after the hydraulic pressure control unit 1 is assembled, that is, in a state in which the adhesive connecting the base body 10 and the coil unit 60 has not yet cured, the projection 71 is pressed upward by the upper face 66a of the upper face section 66 of the coil housing 65, whereby the arm 70 is elastically deformed. Therefore, in a state where the adhesive for bonding the base body 10 and the coil unit 60 is not cured, the coil unit 60 can be pressed toward the base body 10 by the reaction force of the arm 70. Therefore, with the hydraulic pressure control unit 1 according to the present embodiment, the coil unit 60 can be fixed on the base body 10 by adhesion. Therefore, with the hydraulic pressure control unit 1 according to the present embodiment, it is possible to fix the coil unit 60 to the base body 10 by adhesion without using bolts as the screw connection members, that is, without bolts. Since the coil unit 60 can be fixed to the base body 10 without bolts, it is not necessary for the hydraulic pressure control unit 1 according to the present embodiment to secure an arrangement space for bolts on the coil unit 60. Therefore, the coil unit 60 can be downsized, whereby the hydraulic pressure control unit 1 can be downsized.

Further, one end of the arm 70 is supported by the housing 40. The reaction force of the arm 70 at the location of the connection between the housing 40 and the base body 10 therefore also acts as a force for pulling the housing 40 away from the base body 10. Therefore, there is a risk of inserting the arm 70: the bonding portion between the case 40 and the base 10 is released and the airtightness between the case 40 and the base 10 is reduced. However, the arm 70 according to the present embodiment is formed of synthetic resin. Therefore, the pressing force of the coil unit 60 by the arm 70 is reduced with the passage of time due to the creep phenomenon. Furthermore, the evolution of the creep phenomenon is also affected by the ambient temperature, and therefore, if the temperature in the case 40 increases due to the heat generation of the circuit board 31, the coil 61, and the coil 63, the creep phenomenon is accelerated, in which the pressing force to the coil unit 60 by the arm 70 is gradually reduced. Therefore, with the hydraulic pressure control unit 1 according to the present embodiment, after a certain time, the pressing force generated by the arm 70 against the coil unit 60 is reduced to a magnitude that does not cause separation at the bonding site between the housing 40 and the base body 10. Therefore, with the hydraulic pressure control unit 1 according to the present embodiment, separation of the bonded portion between the case 40 and the base 10 and a decrease in airtightness between the case 40 and the base 10 can be prevented.

Furthermore, the support locations of the arms 70 on the housing 40 are not limited to the first side section 44a and the second side section 44b of the main body 41. For example, one end of the arm 70 can be supported in a third side section 44c and a fourth side section 44d, the third side section 44c and the fourth side section 44d being side sections connecting the first side section 44a and the second side section 44b of the main body 41. Alternatively, for example, one end of the arm 70 can be supported by the lower surface section 42 of the body 41.

Further, in the present embodiment, as shown in fig. 5, the arm 70 is disposed between the coil unit 60 and the circuit board 31. Furthermore, the upper side 72 of the arm 70 is inclined with respect to the lower side 32 of the circuit board 31. In other words, the face of the arm 70 that opposes the circuit board 31 is inclined with respect to the face of the circuit board 31 that opposes the arm 70, in the viewing direction perpendicular to the orientation direction of the coil unit 60, the arm 70, and the circuit board 31. This shape of the arm 70 allows a larger space between the arm 70 and the circuit board 31 than if the upper face 72 of the arm 70 and the lower face 32 of the circuit board 31 extended parallel to each other, so that the area for realizing electronic components and the like on the circuit board 31 can be enlarged. In this embodiment, the upper surface 72 of the arm 70 has an inclined surface that is linear in side view. Alternatively, however, it is also possible to have an inclined surface which is curved in side view or stepped in side view. If the upper side 72 of the arm 70 is inclined with respect to the lower side 32 of the circuit board 31, the area for realizing electronic components and the like on the circuit board 31 can be enlarged.

Furthermore, as shown in fig. 5, the axis 74 of the arm 70 is inclined with respect to the lower face 32 of the circuit board 31. In addition, the axis 74 of the arm 70 is inclined relative to the upper face 66a of the upper face section 66 of the coil housing 65. In other words, the axis 74 of the arm 70 is inclined with respect to the face of the circuit board 31 that is opposed to the coil unit 60 and the face of the coil unit 60 that is opposed to the circuit board 31 in the viewing direction perpendicular to the orientation direction of the coil unit 60, the arm 70, and the circuit board 31. In addition, the axis 74 of the arm 70 is a virtual line connecting one end of the arm 70 with the other end from a point spaced apart from the upper surface 72 and the lower surface 73 at the same interval.

As shown in fig. 5, by means of this arrangement of the axes 74 of the arms 70, it is possible, for example, to tilt the upper side 72 of the arms 70 relative to the lower side 32 of the circuit board 31. Due to the inclination of the upper surface 72 of the arm 70 relative to the lower surface 32 of the circuit board 31, the space between the arm 70 and the circuit board 31 is increased compared to a case where the upper surface 72 of the arm 70 and the lower surface 32 of the circuit board 31 extend parallel to each other, so that the area for realizing electronic components and the like on the circuit board 31 can be enlarged. Furthermore, by means of this arrangement of the axes 74 of the limbs 70, the lower face 73 of the limbs 70 can be inclined, for example, relative to the upper face 66a of the upper face section 66 of the coil housing 65. Due to the inclination of the lower surface 73 of the arm 70 relative to the upper surface 66a of the upper surface section 66 of the coil housing 65, the spatial distance between the arm 70 and the coil unit 60 is increased compared to a case in which the lower surface 73 of the arm 70 and the upper surface 66a of the upper surface section 66 of the coil housing 65 extend parallel to each other, so that the support area for the object in the housing 40 can be enlarged.

In addition, the arm 70 and the main body 41 of the housing 40 are integrally molded from synthetic resin. Therefore, in the hydraulic pressure control unit 1 according to the present embodiment, the step of attaching the arm 70 to the main body 41 can be omitted, and the number of assembling steps can be reduced.

Further, since the plurality of support arms 70 are provided, the coil unit 60 can be more firmly pressed than the case where the coil unit 60 is pressed by one single support arm 70. Therefore, by providing the plurality of support arms 70, the reliability of the attachment between the base 10 and the coil unit 60 is improved.

Further, in the present embodiment, as shown in fig. 4, the two arms 70 contact the coil unit 60 at point-symmetrical positions with respect to the center point 69 of the coil unit 60. In other words, in the present embodiment, at least two of the support arms 70 are in contact with the coil unit 60 at positions point-symmetrical with respect to the center point 69 of the coil unit 60 along the observation direction parallel to the orientation direction of the coil unit 60 and the support arms 70. Therefore, a local difference in the load applied to the coil unit 60 by the support arm 70 is reduced and the reliability of the adhesion between the base body 10 and the coil unit 60 is improved.

As shown in fig. 3 and 4, the hydraulic pressure control unit 1 according to the present embodiment is provided with at least one cover fixing section 50 that fixes the cover 48 to the main body 41 of the housing 40. In the present embodiment, an example having two cover fixing sections 50 is shown. The cover fixing section 50 is disposed within a space surrounded by the body 41 and the cover 48. Furthermore, each cover fixing section 50 is provided with a fitted section 51 and a fitted section 55 which is in fit with the fitted section 51. The engaged section 51 is supported by one of the components, that is, by the body 41 or the cover 48. The engaging section 55 is supported by the other of the members, that is, by the body 41 or the cover 48. The present embodiment shows an example in which the fitted section 51 is supported by the main body 41 and the fitted section 55 is supported by the cover 48. Further, in the present embodiment, of the two structural elements that are fitted to each other when the cover 48 is fixed to the main body 41, the structural element with higher rigidity is referred to as a fitted section 51, and the structural element with lower rigidity is referred to as a fitted section 55.

In the hydraulic pressure control unit according to the related art, the structure for fixing the cover to the body is protruded outward from the outer circumferences of the body and the cover, and thus it is difficult to downsize the hydraulic pressure control unit. On the other hand, the cover fixing section 50 is provided within a space surrounded by the body 41 and the cover 48.

Therefore, the cover fixing section 50 does not protrude outward from the outer circumferences of the body 41 and the cover 48. Therefore, the hydraulic pressure control unit 1 can be downsized compared to the hydraulic pressure control unit according to the related art by fixing the cover 48 to the main body 41 using the cover fixing section 50. Furthermore, since the cover fixing section 50 can no longer be seen from the outside after the assembly of the hydraulic pressure control unit 1 is finished, the design of the hydraulic pressure control unit 1 can be improved. In addition, according to the hydraulic pressure control unit 1 of the present embodiment, since the cover 48 can be fixed to the main body 41 without bolts, the number of man-hours for assembly can be reduced as compared with the case where the cover 48 is fixed to the main body 41 with bolts.

Further, as specific structures of the fitted section 51 and the fitted section 55 of the cover fixing section 50, various structures used in a conventional snap-fit connection structure can be selected. In the present embodiment, the fitted segment 51 and the fitted segment 55 have the following configurations.

The fitted segment 51 has a tubular shape, for example, a substantially cylindrical shape. The fitting segment 55 has a columnar shape, for example, a substantially columnar shape. The fitting section 55 extends to the back of the fitted section 51 and is fitted into the fitted section 51 from the back. In detail, a convex section 52 protruding inward is provided on the inner peripheral side of the fitted section 51. On the other hand, for example, a convex section 56 protruding toward the outer surface of the fitted section 55 is provided at the tip end of the fitted section 55. The fitting section 55 fits into the fitted section 51 from the inside in such a way that the convex section 56 hooks into the convex section 52 of the fitted section 51.

In addition, in the present embodiment, a hole 33 is formed in the circuit board 31. The cover fixing section 50 penetrates the hole 33 of the circuit board 31. In a case where the cover fixing section 50 does not penetrate the hole 33 of the circuit board 31, the cover fixing section 50 is arranged on the outer peripheral side of the circuit board 31. Therefore, the hydraulic pressure control unit 1 can be downsized by passing the cover fixing section 50 through the hole 33 of the circuit board 31, compared with the case where the cover fixing section 50 is disposed on the outer peripheral side of the circuit board 31.

Here, in the present embodiment, the hole 33 of the circuit board 31 serves as a position reference hole of the circuit board 31. The position reference hole is a hole that serves as a reference position when electronic components are implemented on the circuit board 31 and is always formed in the circuit board 31. By guiding the cover fixing section 50 through the position reference hole, it is not necessary to form a special hole for guiding the cover fixing section 50 through the circuit board 31. Therefore, by guiding the cover fixing section 50 through the position reference hole, the circuit board 31 can be reduced in size as compared with a case where a dedicated hole for guiding the cover fixing section 50 therethrough is formed in the circuit board 31. Therefore, the hydraulic pressure control unit 1 can be downsized.

In the present embodiment, the fitting section 55 of the cover fixing section 50 penetrates the hole 33 of the circuit board 31. The engaging section 55 can be smaller than the engaging section 51. Therefore, in the structure in which the fitted section 55 penetrates the hole 33 of the circuit board 31, the hole 33 can be configured to be smaller than the structure in which the fitted section 51 penetrates the hole 33 of the circuit board 31. Thereby, the circuit board 31 can be downsized, and the hydraulic pressure control unit 1 can be downsized.

In addition, in the present embodiment, the fitted segment 51 and the fitted segment 55 are configured to be elastically deformable. Specifically, a groove 53 extending from the leading end to the base end supported by the main body 41 is formed in the fitted section 51. Thereby, the fitted section 51 is divided into two columnar portions. With this structure, in the case where the fitted section 55 is inserted into the fitted section 51, the fitted section 51 can be elastically deformed such that the front end of the fitted section 51 protrudes outward. Further, the fitted section 51 can be divided into three or more columnar sections. In addition, a groove 57 is formed in the fitting section 55 so as to extend from the front end to the base end supported by the cap 48. Thereby, the fitted section 55 is divided into two columnar portions. With this structure, when the fitted section 55 is inserted into the fitted section 51, the fitted section 55 can be elastically deformed such that the front end of the fitted section 55 is narrowed inward. Further, the fitted section 55 can be divided into three or more columnar sections.

When the hydraulic pressure control unit 1 is assembled, the position of the fitted section 55 relative to the fitted section 51 may deviate from a predetermined position due to an assembly error or the like of each component of the hydraulic pressure control unit 1. Even in this case, if the fitted section 51 and the fitted section 55 are configured as an elastically deformable structure, it is possible to fit the fitted section into the fitted section 51 while compensating for assembly errors by the fitted section 51 and the fitted section 55. Therefore, assembly of the hydraulic pressure control unit 1 is facilitated by the way in which the fitted section 51 and the fitted section 55 are configured as an elastically deformable structure. Furthermore, if the fitted section 51 or the fitted section 55 is configured to be elastically deformable, the fitted section can be fitted into the fitted section 51 while compensating for assembly errors by the fitted section 51 and the fitted section 55, thereby facilitating assembly of the hydraulic pressure control unit 1. However, if both the fitted section 51 and the fitted section 55 are configured to be elastically deformable, assembly of the hydraulic pressure control unit 1 becomes easier since larger assembly errors can be compensated for here than in the case where the fitted section 51 or the fitted section 55 is configured to be elastically deformable.

In the present embodiment, the fitted section 51 of the cover fixing section 50 and the main body 41 of the housing 40 are integrally molded from a synthetic resin. Therefore, with the hydraulic pressure control unit 1 according to the present embodiment, the process for assembling the fitted segment 51 to the main body 41 can be omitted, and the man-hours for assembly can be reduced. Further, in the structure in which the fitted section 51 is supported by the cover 48, the man-hours for assembling the hydraulic pressure control unit 1 can be reduced by integrally molding the fitted section 51 and the cover 48 with synthetic resin. In the present embodiment, the section 55 of the cover fixing section 50 and the cover 48 of the housing 40 are integrally molded from a synthetic resin. Therefore, in the hydraulic pressure control unit 1 according to the present embodiment, the step of attaching the fitted segment 55 to the cover 48 can be omitted, and the number of assembling steps can be reduced. Further, in the structure in which the fitted section 55 is supported by the main body 41, the man-hours for assembling the hydraulic pressure control unit 1 can be reduced by molding the fitted section 55 and the main body 41 integrally from a synthetic resin.

Further, in the present embodiment, the hydraulic pressure control unit 1 is provided with a plurality of cover fixing sections 50. Thus, in the present embodiment, the cover 48 is fixed at two or more locations with respect to the main body 41. Therefore, if the cover 48 is fixed to the main body 41 by the cover fixing section 50, the cover 48 can be positioned with respect to the main body 41. Therefore, the provision of the plurality of cover fixing sections 50 enables easy assembly of the hydraulic pressure control unit 1.

In addition, the hydraulic pressure control unit 1 according to the present embodiment is provided with a plurality of cover fixing sections 50 and is configured such that the cover 48 cannot be fixed to the main body 41 in an incorrect direction. With this structure of the hydraulic pressure control unit 1, erroneous assembly of the cover 48 can be prevented, which makes assembly of the hydraulic pressure control unit 1 easy. Specifically, a virtual axis parallel to the direction of passage of the opening 43a of the main body 41 of the housing 40 is referred to as a virtual axis 58. If the cover 48 is rotated by 180 ° from the normal assembly position with the imaginary axis 58 as the center of rotation in the definition of the virtual axis 58, the fitted section 55 of at least one of the cover fixing sections 50 is not fitted into the fitted section 51 of the cover fixing section 50. Such a structure can be realized, for example, by: at least two of the cover fixing sections 50 are arranged at positions that are not point-symmetrical with the virtual axis 58 as a center. Further, such a structure can be achieved by changing the sizes of the fitted section 51 and the fitted section 55 of the at least two cover fixing sections 50.

As shown in fig. 4 and 6, the hydraulic pressure control unit 1 according to the present embodiment is provided with at least one connecting section 80 that connects the base body 10 with the housing 40. In the present exemplary embodiment, an example with two connecting sections 80 is shown. In addition, as mentioned above, the housing 40 according to the present embodiment is provided with the main body 41 and the cover 48. Therefore, in the present embodiment, the connecting section 80 connects the base body 10 and the main body 41 of the housing 40. The connecting section 80 is provided with a concave section 81 formed in the base body 10. With the hydraulic pressure control unit 1 according to the present embodiment, the main body 41 of the housing 40 is connected to the upper face 18 of the base body 10. Therefore, in the present embodiment, the concave section 81 is formed in a shape deepened downward in the upper surface 18 of the base 10. In addition, the connecting section 80 is supported by the body 41 of the housing 40 and is provided with a pin 82, the lower end 83 of which is pressed into the concave section 81. That is, the lower ends 83 of the pins 82 supported by the main body 41 of the housing 40 are pressed into the concave sections 81 of the base body 10, thereby connecting the base body 10 with the main body 41 of the housing 40.

For hydraulic pressure control units according to the prior art, a connection by means of a screw, which is a threaded connection element, is known as the connection between the base body and the housing. Each bolt is provided with a part forming an external thread, in which the external thread is formed, and a head, to which a tool is to be connected. If the width in the direction perpendicular to the axial direction of the bolt is defined as the horizontal width, the horizontal width of the head portion is larger than the horizontal width of the portion where the external thread is formed. Therefore, the hydraulic pressure control unit according to the related art is difficult to be reduced because it is necessary to secure an arrangement space of the large head of the bolt connecting the housing with the base body. In contrast, with the hydraulic pressure control unit 1 according to the present embodiment, the base body 10 and the main body 41 of the housing 40 can be connected to each other without using bolts (without bolts), so that it is not necessary to secure an arrangement space for the bolt heads. Therefore, the hydraulic pressure control unit 1 according to the present embodiment can be downsized compared to the hydraulic pressure control unit according to the related art.

Further, with the hydraulic pressure control unit 1 according to the present embodiment, as mentioned above, the base body 10 and the main body 41 of the housing 40 are bonded to each other. Therefore, with the hydraulic pressure control unit 1 according to the present embodiment, when a force for separating the main body 41 of the housing 40 from the base body 10 acts, this force may be affected not only by the connecting section 80 but also by the adhesive force of the adhesive that bonds the main body 41 of the housing 40 and the base body 10. Therefore, in the structure in which the base body 10 is bonded to the main body 41 of the housing 40, the pins 82 of the connection section 80 can be configured to be thinner than in the structure in which the base body 10 is not bonded to the main body 41 of the housing 40. Therefore, the hydraulic pressure control unit 1 can be downsized.

Furthermore, in the present embodiment, the hydraulic pressure control unit 1 is provided with a plurality of connection sections 80. Thus, in the present embodiment, the main body 41 of the housing 40 is fixed at two or more locations with respect to the base 10. Therefore, when the main body 41 of the housing 40 is connected to the base body 10 by the connecting section 80, the main body 41 of the housing 40 can be positioned with respect to the base body 10. Therefore, the provision of the plurality of connection sections 80 makes the assembly of the hydraulic pressure control unit 1 easy.

In addition, the material of the pin 82 is not particularly limited. The pin 82 can be made of synthetic resin or metal. In the case where the pin 82 is made of synthetic resin, the man-hours for assembling the hydraulic pressure control unit 1 can be reduced by molding the pin 82 integrally with the housing 40. In contrast, the pin 82 made of metal does not cause a creep phenomenon. Therefore, in the case where the pin 82 is composed of metal, it is possible to prevent the connecting force of the main body 41 of the housing 40 and the base body 10 at the connecting section 80 from being reduced with the passage of time.

In addition, the structure of the body 41 of the housing 40 supporting the pin 82 is not particularly limited. After the assembly of the hydraulic pressure control unit 1 is finished, it is sufficient that the pin 82 is not released from the main body 41. For example, a structure in which the pin 82 is hooked in a step on the main body 41 is also possible. In the structure in which the pin 82 is clamped between the step on the main body 41 and the base body 10, the pin 82 can be prevented from being released from the main body 41 after the assembly of the hydraulic pressure control unit 1 is finished. In the present embodiment, the pin 82 is injection molded to the body 41 of the housing 40. Specifically, the pin 82 is injection-molded from a synthetic resin on the holding section 45 of the main body 41. That is, the retaining section 45 is the section onto which the pin 82 is injection molded. By injection molding the pin 82 onto the body 41 of the housing 40, the pin 82 can be supported by the body 41 when the body 41 is formed. Therefore, by injection-molding the pin 82 onto the main body 41 of the housing 40, the man-hours for assembling the hydraulic pressure control unit 1 can be reduced.

In addition, in the present embodiment, the pin 82 is provided with at least one protruding section 85 at a portion of the pin 82 that is injection molded on the main body 41 of the housing 40. The protruding section 85 protrudes in a direction that does not extend parallel to the direction in which the pin 82 is pressed into the concave section 81. As shown in fig. 6 and the like, in the present embodiment, the pin 82 is pressed downward and pressed into the concave section 81. Therefore, in the present embodiment, the protruding section 85 protrudes in the lateral direction. The pin 82 is provided with a protruding section 85, whereby the pin 82 can be prevented from coming loose from the holding section 45, thereby improving the reliability of the connection between the base body 10 and the main body 41 of the housing 40.

Furthermore, in the present exemplary embodiment, the end of the pin 82 on the side opposite to the end pressed into the concave section 81, i.e. the upper end 84 of the pin 82, protrudes out of the retaining section 45 of the body 41 of the housing 40, onto which the pin 82 is injection molded. Thereby, the pin 82 can be pressed directly into the concave section 81, which makes assembly of the hydraulic pressure control unit 1 easy.

Further, in the present embodiment, the pin 82 is configured in a plate shape. The pin 82 is configured in a plate shape, whereby the pin 82 can be elastically deformed. The pin 82 can therefore be pressed into the concave section 81 while compensating for assembly errors of the respective components of the hydraulic pressure control unit 1. Therefore, the assembly of the hydraulic pressure control unit 1 is facilitated by configuring the pin 82 in a plate-like manner.

Furthermore, in the present exemplary embodiment, a through-hole 86 is formed at the end of the plate-shaped pin 82 that is pressed into the concave section 81, i.e., at the lower end 83 of the plate-shaped pin 82. Therefore, when the lower end 83 of the pin 82 is pressed into the concave section 81, the lower end 83 of the pin 82 can be elastically deformed in the concave section 81. Therefore, by forming the through hole 86 on the lower end 83 of the plate-shaped pin 82, it is possible to facilitate pressing the lower end 83 of the pin 82 into the concave section 81, thereby facilitating assembly of the hydraulic pressure control unit 1.

As shown in fig. 3 to 5, the hydraulic pressure control unit 1 according to the present embodiment is provided with at least one support portion 90 supported by the housing 40. In the present embodiment, an example having two support portions 90 is shown. In addition, as mentioned above, the housing 40 according to the present embodiment is provided with the main body 41 and the cover 48. In the present embodiment, the support portion 90 is supported by the main body 41 of the housing 40.

The support 90 is at least partially disposed below a portion of the coil housing 65 of the coil unit 60. In addition, an example is shown in the present embodiment, in which the entire support portion 90 is disposed below the upper surface section 43 of the coil case 65. Here, the support portion 90 serves to support a portion of the coil housing of the coil unit 60 before the coil unit 60 and the main body 41 of the housing 40 are coupled with the base body 10. Therefore, when the support portion 90 can support the coil unit 60, at least a part of the support portion 90 can be arranged below a portion of the coil housing 65 different from the upper face section 43. For example, steps can be provided on the side sections 68 of the coil housing 65 for arranging at least a part of the support 90 below the steps on the side sections 68 of the coil housing 65. In this case, the support portion 90 can support the steps on the side sections 68 of the coil housing 65 and the support portion 90 can support the coil unit 60 in a state before the coil unit 60 and the main body 41 of the housing 40 are connected with the base body 10. In addition, when a part of the support portion 90 is disposed below a part of the coil housing 65 of the coil unit 60, the remaining part of the support portion 90 can also be disposed on the upper portion of the coil housing 65. For example, the support 90 can be held in a position higher than the coil case 65 by the main body 41 of the case 40. When a portion of the support portion 90 is disposed below a portion of the coil housing 65 of the coil unit 60, the support portion 90 can support the coil unit 60 before connecting the coil unit 60 and the main body 41 of the housing 40 with the base body 10.

Fig. 7 is a view explaining a state of the hydraulic pressure control unit according to the embodiment of the present invention before connecting the coil unit and the main body of the housing with the base body.

As shown in fig. 7, in a state before the coil unit 60 and the main body 41 of the case 40 are connected with the base 10, the support portion 90 supports the lower face 66b of the upper face section 43 of the coil case 65 from below by a support section 91 that forms at least a part of a section disposed below the upper face section 43 of the coil case 65. In addition, in the present embodiment, as mentioned above, the entire support portion 90 is disposed below the upper surface section 43 of the coil case 65. Thus, the lower end 92 of the support 90 is supported by the main body 41 of the housing 40, and the upper end 93 serves as the support section 91.

The hydraulic pressure control unit according to the prior art is configured such that the housing is assembled on the base body after the coil unit is assembled on the base body. Here, in order to reduce the hydraulic pressure control unit, it is necessary to reduce the gap between the coil unit and the housing. However, if the coil unit is mounted on the base body with a deviation from a predetermined position, a small gap between the coil unit and the housing makes the assembly of the hydraulic pressure control unit according to the related art difficult because the upper portion of the coil unit and the lower portion of the housing interfere with each other. There is also a fear that the mutual interference of the upper portion of the coil unit and the lower portion of the housing may cause the terminal of the coil to be bent.

In contrast, with the hydraulic pressure control unit 1 according to the present embodiment, not only the coil unit 60 but also the main body 41 of the housing 40 can be co-located with respect to the base body 10 by supporting the coil unit 60 by the support portion 90. Therefore, if the gap between the coil unit 60 and the main body 41 of the housing 40 is narrowed, the hydraulic pressure control unit 1 according to the present embodiment can also prevent the mutual interference of the upper portion of the coil unit 60 and the lower portion of the main body 41 of the housing 40. Therefore, the hydraulic pressure control unit 1 according to the present embodiment can be downsized compared to the hydraulic pressure control unit according to the related art. With the hydraulic pressure control unit 1 according to the present embodiment, it is possible to prevent the mutual interference of the upper portion of the coil unit 60 and the lower portion of the main body 41 of the housing 40, and thus it is also possible to prevent the bending of the connection terminals 62 of the coil 61 and the connection terminals 64 of the coil 63.

Here, as shown in fig. 3, in a state where the coil unit 60 and the main body 41 of the case 40 are connected to the base 10, the length La and the length Lb are defined as follows. The length La is a length from the connection point between the main body 41 of the housing 40 and the upper face 18 of the base body 10 in the vertical direction up to the portion supported on the coil housing 65 by the support section 91 of the support portion 90. As mentioned above, in the present embodiment, the lower surface 66b of the upper surface section 66 of the coil case 65 is supported by the support section 91 of the support 90. Therefore, in the present embodiment, the length La corresponds to a length from the connection portion between the main body 41 of the case 40 and the upper surface 18 of the base 10 to the lower surface 66b of the upper surface section 66 of the coil case 65 in the vertical direction. Furthermore, the length Lb corresponds to the length along the vertical direction from the connection point between the main body 41 of the housing 40 and the upper face 18 of the base body 10 up to the support section 91 of the support portion 90. In this definition of the length La and the length Lb, the length La is longer than the length Lb.

Since the length La is configured to be longer than the length Lb, a gap is formed between the portion of the coil case 65 supported by the support section 91 of the support 90 and the support section 91 of the support 90 when the coil unit 60 and the main body 41 of the case 40 are connected with the base 10. Therefore, in a state where the coil unit 60 and the main body 41 of the case 40 are connected with the base body 10, the coil unit 60 is not pressed upward by the support portion 90, thereby improving reliability of adhesion between the coil unit 60 and the base body 10.

In addition, in the present embodiment, as mentioned above, the support portion 90 is disposed below the upper surface section 66 of the coil case 65, with the lower end 92 supported by the main body 41 of the case 40, and the upper end 93 serving as the support section 91. If a part of the support 90 is arranged above the upper surface section 66 of the coil housing 65, a part of the support 90 is arranged in the laterally formed gap between the upper surface section 66 of the coil housing 65 and the main body 41 of the housing 40. On the other hand, since the entire support portion 90 is disposed below the upper surface section 66 of the coil housing 65, it is not necessary to dispose a part of the support portion 90 in the gap formed laterally between the upper surface section 66 of the coil housing 65 and the main body 41 of the housing 40. Therefore, by arranging the entire support portion 90 below the upper surface section 66 of the coil housing 65, the gap formed laterally between the upper surface section 66 of the coil housing 65 and the main body 41 of the housing 40 can be reduced, and the hydraulic pressure control unit 1 can be reduced.

Further, the hydraulic pressure control unit 1 according to the present embodiment is provided with a plurality of support portions 90. In the case where the coil unit 60 is supported by one single support portion 90, an area in the vicinity of a position where the center of gravity of the coil unit 60 is located in plan view is supported by the support portion 90. However, if an attempt is made to reduce the hydraulic pressure control unit 1, it may be difficult to secure a positional space for support by the support portion 90 in a region in the vicinity of a position where the center of gravity of the coil unit 60 is located in a plan view. If the coil unit 60 is supported by a plurality of support portions 90 with respect to this, the coil unit 60 can be supported by: the support portion 90 is placed on an unoccupied position space without supporting a region in the vicinity of the position of the center of gravity of the coil unit 60 in plan view. Therefore, by providing the plurality of support portions 90, the hydraulic pressure control unit 1 can be downsized.

In the present embodiment, the main body 41 and the support portion 90 of the housing 40 are integrally molded from a synthetic resin. Therefore, with the hydraulic pressure control unit 1 according to the present embodiment, the process for attaching the support portion 90 to the main body 41 can be omitted, and the man-hours for assembly can be reduced.

Further, in the present embodiment, as described above, the support arm 70 is provided. Therefore, as shown in fig. 7, in the state before the coil unit 60 and the main body 41 of the case 40 are connected to the base 10, the coil case 65 is held in a clamped state by the support arm 70 and the support portion 90. Therefore, by providing the support arm 70, the coil unit 60 can be stably held in the main body 41 of the housing 40, which makes assembly of the hydraulic pressure control unit 1 easy. In addition, even in the case where the arm 70 is made of metal, such an effect can be obtained. In the case where the arm 70 is made of synthetic resin, it is preferable that the body 41, the support portion 90, and the arm 70 of the housing 40 be integrally molded of synthetic resin. The process for assembling the support portion 90 and the arm 70 to the main body 41 of the housing 40 can be omitted, so that the man-hours for assembly can be reduced.

Fig. 8 is a view explaining a process of supporting a coil unit by a support part in a hydraulic pressure control unit according to an embodiment of the present invention.

In the present embodiment, as shown in fig. 8, in a plan view of the internal space of the hydraulic pressure control unit 1, each support portion 90 is configured in an elastically deformable structure up to a position outside the coil unit 60. As shown in fig. 4, a recess 66c is formed in an upper surface section 66 of the coil case 65 of the coil unit 60. As shown in fig. 8, in a plan view of the internal space of the hydraulic pressure control unit 1, the position of each support portion 90 up to the outside of each recess 60c is configured to be elastically deformable. With such a structure of the support portion 90, the degree of freedom in design of the hydraulic pressure control unit 1 is improved.

Specifically, if the support portion 90 is not elastically deformed all the way to a position outside the coil unit 60 in a plan view of the internal space of the hydraulic pressure control unit 1, the coil unit 60 is lowered from above the support portion 90 and supported by the support portion 90. In this case, it should be noted that when the coil unit 60 is lowered toward the support portion 90, the positions of the members disposed in the main body 41 of the housing 40 do not interfere.

In contrast, as shown in fig. 8, if the support portion 90 is elastically deformable up to a position outside the coil unit 60 in a plan view of the internal space of the hydraulic pressure control unit 1, the coil unit 60 can be lifted from below the support portion 90 and supported by the support portion 90. In detail, the coil unit 60 is lifted by: the coil unit 60 is guided from below through an opening 42a formed in the lower surface section 42 of the main body 41 of the housing 40. If the coil unit 60 is lifted, the support portion 90 comes into contact with the edge of the recess 66c on the upper surface section 66 of the coil housing 65. Subsequently, the support portion 90 is elastically deformed outward as the coil unit 60 is lifted. If the coil unit 60 is lifted further and the upper surface section 66 of the coil housing 65 reaches above the support section 91 of the support 90, the support 90 returns to its original shape, wherein the support section 91 of the support 90 is positioned below the lower surface section 42 of the main body 41. Thereby, the coil unit 60 can be supported by the support portion 90. If the support portion 90 is elastically deformable all the way to a position outside the coil unit 60 in a plan view of the internal space of the hydraulic pressure control unit 1, the coil unit 60 can be supported by the support portion 90 not only from above the support portion 90 but also from below the support portion 90 in this way, thereby improving the degree of freedom in design of the hydraulic pressure control unit 1.

In addition, each of the support portions 90 which can be elastically deformed up to a position outside the coil unit 60 in a plan view of the internal space of the hydraulic pressure control unit 1 is preferably shaped as shown in fig. 5 if the support portion 90 is disposed below the upper surface section 66 of the coil housing 65 with the lower end 92 supported by the main body 41 of the housing 40 and the upper end 93 serving as the support section 91. Specifically, it is preferable that the horizontal width of the support portion 90 is reduced upward from the lower end 92 to the middle region 94 and is enlarged upward from the middle region 94, and the horizontal width of the upper end 93 is greater than the horizontal width of the middle region 94. With the support portion 90 having such a structure, the horizontal width is smaller upward from the lower end 92 up to the middle region 94, which facilitates elastic deformation and support of the coil unit 60 from below the support portion 90 through the support portion 90. In addition, with the support portion 90 having such a structure, the horizontal width is larger upward from the middle region 94 and the horizontal width of the upper end 93 is larger than the horizontal width of the middle region 94, so that the area size of the coil case 65 supported by the support portion 90 can be enlarged. Therefore, with the support portion 90 having such a structure, the stability of supporting the coil unit 60 by the support portion 90 can be improved. Therefore, the use of the support portion 90 having such a structure makes the assembly of the hydraulic pressure control unit 1 easy.

In addition, as mentioned above, the hydraulic pressure control unit 1 according to the present embodiment is provided with the hydraulic accumulator 23 that stores brake fluid when pressure reduction is performed during the anti-lock control, wherein the brake fluid in the hydraulic accumulator 23 is discharged from the hydraulic accumulator 23 to the outside without being pumped. The pumpless hydraulic pressure control unit should be downsized. Therefore, it is preferable to configure the hydraulic pressure control unit 1 according to the present embodiment as a pumpless hydraulic pressure control unit.

Advantages of the hydraulic pressure control unit

The advantages of the hydraulic pressure control unit according to the present embodiment are explained below.

The hydraulic pressure control unit 1 according to the present embodiment is used for a brake system 100 with which a saddle type vehicle such as a bicycle 200 is equipped with the brake system 100. The hydraulic pressure control unit 1 is provided with a base body 10, a circuit board 31, a housing 40 and a connecting section 80. A flow channel 13 for brake fluid is formed in the base body 10. The circuit board 31 controls the driving of the hydraulic pressure servo valve 20 that opens and closes the flow passage 13. The circuit board 31 is disposed in the housing 40. The connecting section 80 serves to connect the base body 10 to the housing 40. Each connecting section 80 is provided with the concave section 81 formed on the base body 10 and a pin 82 which is supported by the housing 40 and the lower end 83 of the pin 82 is pressed into the concave section 81.

With the hydraulic pressure control unit 1 having such a structure, since the base body 10 and the housing 40 can be connected to each other without using bolts, it is not necessary to secure an arrangement space for the bolt heads. Therefore, the hydraulic pressure control unit 1 according to the present embodiment can be downsized compared to the hydraulic pressure control unit according to the related art.

The embodiments are explained in this connection. However, the present invention is not limited to this explanation of the embodiment. For example, as an alternative, the explanation of the embodiments can be implemented only partially.

List of reference numerals

1 Hydraulic pressure control Unit

10 base body

11 Master cylinder Joint

12 wheel cylinder joint

13 flow channel

14 first flow path

15 second flow path

16 third flow path

17 fourth flow channel

18 upper side

20 hydraulic pressure servo valve

21 inlet valve

22 outlet valve

23 Hydraulic accumulator

30 control section

31 circuit board

32 lower surface

33 holes

40 casing

41 main body

42 lower surface section

42a opening

43 upper surface section

43a opening

44a first side section

44b second side section

44c third side section

44d fourth side section

45 holding section

48 cover

50 cover securing section

51 of the segment to be fitted

52 convex section

53 groove

55 chimeric segments

56 convex section

57 groove

58 virtual axis

60 coil unit

61 coil

62 binding post

63 coil

64 terminal

65 coil shell

66 upper surface section

66a upper surface

66b lower surface

66c recess

67 lower surface section

68 side section

69 center point

70 support arm

71 projection

72 upper side

73 lower surface

74 axis

80 connecting section

81 concave section

82 pin

83 lower end

84 upper end

85 projecting section

86 straight through hole

90 support part

91 supporting section

92 lower end

93 upper end of 93

94 middle region

100 braking system

101 hydraulic line

102 hydraulic line

103 hydraulic pressure sensor

200 bicycle

210 frame

211 control tube

212 upper pipe

213 lower tube

214 seat tube

215 diagonal brace

216 front fork

217 front wheel

218 saddle

219 Pedal

220 rear wheel

230 pivot section

231 steering column

232 handle bar

233 steering rod

240 brake actuation section

241 brake lever

242 master cylinder

243 storage container

250 front wheel brake section

251 wheel cylinder

252 rotor

260 rear wheel braking section

270 current supply unit.

Claims (13)

1. Hydraulic pressure control unit (1) for a brake system (100), a saddle type vehicle (200) being equipped with said brake system (100), said hydraulic pressure control unit (1) comprising:

a base body (10) in which a flow channel (13) for brake fluid is formed;

a circuit board (31) for operating the hydraulic pressure servo valve (20) for opening and closing the flow passage (13);

a housing (40) in which the circuit board (31) is disposed; and

a connecting section (80) for connecting the base body (10) to the housing (40),

wherein the connecting section (80) comprises:

a concave section (81) formed on the base body (10); and

a pin (82) supported by the housing (40) and having an end (83) pressed into the concave section (81).

2. The hydraulic pressure control unit (1) according to claim 1, wherein the base body (10) is bonded to the housing (40).

3. The hydraulic pressure control unit (1) according to claim 1 or 2, provided with a plurality of connection sections (80).

4. The hydraulic pressure control unit (1) according to any one of claims 1-3, wherein the pin (82) is composed of metal.

5. The hydraulic pressure control unit (1) according to claim 4, wherein the housing (40) is a resin molded product, and wherein the pin (82) is injection molded on the housing (40).

6. The hydraulic pressure control unit (1) according to claim 5, wherein the pin (82) is provided with a protruding section (85) on a portion of the pin (82) that is injection molded in the housing (40), the protruding section (85) protruding in a direction that is non-parallel to a direction to press the pin (82) into the concave section (81).

7. The hydraulic pressure control unit (1) according to claim 5 or 6, wherein an end (84) of the pin (82) on a side facing away from an end (83) pressed into the concave section (81) protrudes from a section (45) of the housing (40), the pin (82) being injection molded onto the section (45).

8. The hydraulic pressure control unit (1) according to any one of claims 1 to 3, wherein the housing (40) is a resin-molded product, and wherein the housing (40) and the pin (82) are integrally molded.

9. The hydraulic pressure control unit (1) according to any one of claims 1-8, wherein the pin (82) is configured as a plate.

10. The hydraulic pressure control unit (1) according to claim 9, wherein a through hole (86) is configured on an end (83) of the pin (82) pressed into the concave section (81).

11. The hydraulic pressure control unit (1) according to any one of claims 1 to 10, provided with a hydraulic accumulator (23) that stores brake fluid when the pressure is reduced during anti-lock braking control, wherein the brake fluid in the hydraulic accumulator (23) is discharged from the hydraulic accumulator (23) to the outside without pumping.

12. Brake system (100) provided with a hydraulic pressure control unit (1) according to any one of claims 1 to 11.

13. Saddle-type vehicle (200) provided with a braking system (100) according to claim 12.

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