Braking device

Abstract

The present invention provides a braking device that can improve the water resistance of mounted components mounted on the main surface of the housing. [Solution] The braking device 30 comprises a housing 60 having a passage for brake fluid to flow through, mounted components 51, 52, and 54 mounted on the main surface 61 of the housing 60, and a sealing part 90 made of resin material that is fixed to the housing 60 and seals the mounted components 51, 52, and 54.

Description

Technical Field

[0001] The present invention relates to a braking device.

Background Art

[0002] Patent Document 1 describes a braking device that adjusts the braking force generated on a wheel by adjusting the hydraulic pressure of brake fluid. The braking device includes a base body provided with a fluid passage for brake fluid, a mounting component mounted on the upper surface of the base body, and a housing surrounding the mounting component. The mounting component includes a coil that drives a valve for adjusting the hydraulic pressure of brake fluid and a circuit board that controls energization to the coil.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The braking device as described above enhances the water resistance of the mounting components inside the housing by adhering the housing to the base body. However, there is still room for improvement in terms of enhancing water resistance in the braking device as described above.

Means for Solving the Problems

[0005] The braking device for solving the above problems is a braking device that applies a braking force to a wheel of a vehicle by adjusting the hydraulic pressure of brake fluid, and includes a housing having a flow path through which brake fluid flows, a mounting component mounted on the main surface of the housing, and a sealing portion made of a resin material, fixed to the housing, and sealing the mounting component.

Effects of the Invention

[0006] The braking device can improve the water resistance of mounted components that are mounted on the main surface of the housing. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a schematic diagram of a vehicle equipped with a braking device according to the first embodiment. [Figure 2] Figure 2 is a plan view of the braking device shown in Figure 1. [Figure 3] Figure 3 is an exploded perspective view of the braking system shown in Figure 1. [Figure 4] Figure 4 is a cross-sectional view taken along the line 4-4 in Figure 2. [Figure 5] Figure 5 is a cross-sectional view taken along the line 5-5 in Figure 2. [Figure 6] Figure 6 is a plan view of the braking device according to the second embodiment. [Figure 7] Figure 7 is an exploded perspective view of the braking system shown in Figure 6. [Figure 8] Figure 8 is a cross-sectional view taken along the line 8-8 in Figure 6. [Figure 9] Figure 9 is a plan view of the braking device according to the third embodiment. [Figure 10] Figure 10 is a perspective view of the braking device shown in Figure 9. [Figure 11] Figure 11 is a cross-sectional view taken along the line 11-11 in Figure 9. [Modes for carrying out the invention]

[0008] (First Embodiment) A first embodiment of a vehicle equipped with a braking system will be described. <Configuration of the first embodiment> As shown in Figure 1, the vehicle 10 comprises a plurality of wheels 11, a braking operating member 12, a master cylinder 13, a plurality of braking mechanisms 20, and a plurality of braking devices 30. In the first embodiment, the vehicle 10 is a two-wheeled vehicle having two wheels 11. In other embodiments, the vehicle 10 may be a four-wheeled vehicle having four wheels 11.

[0009] Figure 1 illustrates one of the multiple wheels 11. The braking operating member 12 is a member operated by the driver to adjust the deceleration of the vehicle 10. The braking operating member 12 is, for example, a brake pedal or a brake lever. The master cylinder 13 is connected to the braking operating member 12. The master cylinder 13 generates hydraulic pressure corresponding to the amount of operation of the braking operating member 12.

[0010] <Brake mechanism> Multiple braking mechanisms 20 are provided individually for each of the multiple wheels 11. In other words, there are as many braking mechanisms 20 as there are wheels 11. Figure 1 illustrates one of the multiple braking mechanisms 20.

[0011] The braking mechanism 20 includes a rotating body 21, a friction material 22, and a wheel cylinder 23. The rotating body 21 rotates together with the corresponding wheel 11. Therefore, by pressing the friction material 22 against the rotating body 21, a braking force is applied to the wheel 11 that rotates together with the rotating body 21. When the wheel pressure, which is the hydraulic pressure inside the wheel cylinder 23, increases, the force pressing the friction material 22 against the rotating body 21 increases. On the other hand, when the wheel pressure decreases, the force pressing the friction material 22 against the rotating body 21 decreases. Therefore, the braking mechanism 20 can apply a greater braking force to the corresponding wheel 11 as the wheel pressure increases. The wheel cylinder 23 is connected to the master cylinder 13 via the main passage 100.

[0012] <Brake device> The schematic configuration of the braking device 30 will be described with reference to Figure 1. As shown in Figure 1, the braking device 30 is connected to both the master cylinder 13 and the wheel cylinder 23. The braking device 30 includes a connecting passage 41, a pressure reducing passage 42, a return passage 43, a holding valve 51, a pressure reducing valve 52, a reservoir 53, and an electric pump 54.

[0013] The connection flow path 41 is a part of the main flow path 100. A holding valve 51, which is a normally open solenoid valve, is provided in the connection flow path 41. The holding valve 51 is closed when regulating the supply of the brake fluid to the wheel cylinder 23. The pressure reducing flow path 42 connects a portion of the connection flow path 41 on the wheel cylinder 23 side with respect to the holding valve 51 and a reservoir 53 that stores the brake fluid. A pressure reducing valve 52, which is a normally closed solenoid valve, is provided in the pressure reducing flow path 42. When the pressure reducing valve 52 opens, the brake fluid in the wheel cylinder 23 flows into the reservoir 53 through the pressure reducing flow path 42. That is, the pressure reducing valve 52 opens when allowing the outflow of the brake fluid from the wheel cylinder 23 to the reservoir 53. The reflux flow path 43 connects a portion between the pressure reducing valve 52 and the reservoir 53 in the pressure reducing flow path 42 and a portion between the master cylinder 13 and the holding valve 51 in the connection flow path 41. An electric pump 54 powered by an electric motor is provided in the reflux flow path 43. The electric pump 54 pumps up the brake fluid in the reservoir 53 and discharges the brake fluid to a portion between the master cylinder 13 and the holding valve 51 in the connection flow path 41.

[0014] Thus, the braking device 30 adjusts the wheel pressure by switching the holding valve 51 and the pressure reducing valve 52 or driving the electric pump 54 under the situation where the braking operation member 12 is operated.

[0015] Subsequently, referring to FIGS. 2 to 5, the specific configuration of the braking device 30 will be described. As shown in FIGS. 2 to 5, the braking device 30 includes a housing 60, a coupling portion 70, an adhesive layer 80, and a sealing portion 90.

[0016] The housing 60 is made of a metal material such as aluminum. In the first embodiment, the housing 60 is in the shape of a rectangular parallelepiped. In other embodiments, the housing 60 may be in the shape of a cylinder or other shape. The housing 60 has a main surface 61, a plurality of receiving recesses 62 to 64, an annular groove 65, and a plurality of engagement grooves 66. Furthermore, the housing 60 has the aforementioned connecting channel 41, a depressurization channel 42, a recirculation channel 43, and a reservoir 53 inside the housing 60.

[0017] The main surface 61 is planar. Multiple housing recesses 62-64 open into the main surface 61 of the housing 60. The multiple housing recesses 62-64 include a first housing recess 62 connected to a connecting channel 41, a second housing recess 63 connected to a pressure reducing channel 42, and a third housing recess 64 connected to a return channel 43. The first housing recess 62 houses a retaining valve 51. The second housing recess 63 houses a pressure reducing valve 52. The third housing recess 64 houses an electric pump 54. In the first embodiment, at least a portion of the retaining valve 51, the pressure reducing valve 52, and the electric pump 54 are exposed from the multiple housing recesses 62-64, respectively. In other words, at least a portion of the retaining valve 51, the pressure reducing valve 52, and the electric pump 54 protrude from the main surface 61 of the housing 60.

[0018] Thus, the main surface 61 of the housing 60 is equipped with a retaining valve 51, a pressure reducing valve 52, and an electric pump 54. In this respect, the retaining valve 51, the pressure reducing valve 52, and the electric pump 54 are considered "mounted components." In other words, the mounted components are parts for adjusting the wheel pressure.

[0019] The annular groove 65 opens into the main surface 61 of the housing 60. When the main surface 61 of the housing 60 is viewed from the front, the annular groove 65 forms an annular shape and surrounds the plurality of receiving recesses 62-64. In other words, on the main surface 61 of the housing 60, the plurality of receiving recesses 62-64 are located inside the annular groove 65. The plurality of engagement grooves 66 open into the main surface 61 of the housing 60. When the main surface 61 of the housing 60 is viewed from the front, the plurality of engagement grooves 66 are located outside the annular groove 65. Also, the plurality of engagement grooves 66 are positioned along the annular groove 65. The plurality of engagement grooves 66 are positioned at intervals with respect to the circumferential direction of the annular groove 65. In the first embodiment, the depth of the plurality of engagement grooves 66 is equal to the depth of the annular groove 65. In other embodiments, the depth of the plurality of engagement grooves 66 may differ from the depth of the annular groove 65.

[0020] The joint portion 70 is made of a resin material. For example, the joint portion 70 is a molded resin product. The joint portion 70 has an upper wall 71, an inner wall 72, an outer wall 73, and a plurality of engaging walls 74.

[0021] The upper wall 71 is annular in shape. The cross-sectional shape perpendicular to the circumferential direction of the upper wall 71 is rectangular. The inner wall 72 extends from the upper wall 71 in the thickness direction of the upper wall 71. The inner wall 72 is provided along the inner end of the upper wall 71 in the circumferential direction. The tip of the inner wall 72 is planar. The inner wall 72 is sized to be insertable into the annular groove 65 of the housing 60. In this respect, the width of the inner wall 72 is narrower than the width of the annular groove 65 of the housing 60. The outer wall 73 extends from the upper wall 71 in the thickness direction of the upper wall 71. The outer wall 73 is provided along the outer end of the upper wall 71 in the circumferential direction. The direction in which the outer wall 73 protrudes from the upper wall 71 is the same as the direction in which the inner wall 72 protrudes from the upper wall 71. The length of the outer wall 73 in the protruding direction relative to the upper wall 71 is shorter than the length of the inner wall 72 in the protruding direction relative to the upper wall 71.

[0022] Multiple engagement walls 74 extend further from the outer wall 73 in the thickness direction of the upper wall 71. The multiple engagement walls 74 are provided spaced apart in the circumferential direction of the outer wall 73. The tips of the multiple engagement walls 74 are planar. Each of the multiple engagement walls 74 is sized to be inserted into one of the multiple engagement grooves 66 of the housing 60. In this respect, the width of the engagement walls 74 is narrower than the width of the engagement grooves 66 of the housing 60.

[0023] As shown in Figures 2, 4, and 5, the coupling portion 70 engages with the housing 60. More specifically, as shown in Figures 4 and 5, the inner wall 72 of the coupling portion 70 is inserted into the annular groove 65 of the housing 60. At this time, a gap GP exists between the tip surface of the inner wall 72 of the coupling portion 70 and the bottom surface of the annular groove 65 of the housing 60. Also, as shown in Figure 5, the multiple engagement walls 74 of the coupling portion 70 are each inserted into the multiple engagement grooves 66 of the housing 60. At this time, the tip surfaces of the multiple engagement walls 74 of the coupling portion 70 are in contact with the bottom surfaces of the multiple engagement grooves 66 of the housing 60.

[0024] As shown in Figures 4 and 5, the adhesive layer 80 is located between the annular groove 65 of the housing 60 and the inner wall 72 of the joint 70. In other words, the adhesive layer 80 adheres the housing 60 and the joint 70. More specifically, the adhesive layer 80 adheres the bottom surface of the annular groove 65 of the housing 60 to the front surface of the inner wall 72 of the joint 70. Furthermore, the adhesive layer 80 adheres the side surface of the annular groove 65 of the housing 60 to the side surface of the inner wall 72 of the joint 70. In this respect, the joint 70 can be said to be fixed to the main surface 61 of the housing 60 by the adhesive layer 80. The inner wall 72 of the joint 70 that is adhered to the housing 60 can also be called the "joint wall". The adhesive layer 80 is formed by the curing of the adhesive. In the first embodiment, since the housing 60 is made of a metal material and the joint 70 is made of a resin material, it is preferable that the adhesive has excellent adhesion between metal and resin. As an example, the adhesive can be a silicone-based adhesive.

[0025] The sealing portion 90 is a resin mold made of thermoplastic resin. For example, the sealing portion 90 may be made of epoxy resin. As shown in Figure 2, the sealing portion 90 covers a part of the main surface 61 of the housing 60, the coupling portion 70, the retaining valve 51, the pressure reducing valve 52, and the electric pump 54. In this case, the sealing portion 90 is fixed to a part of the main surface 61 of the housing 60, the coupling portion 70, the retaining valve 51, the pressure reducing valve 52, and the electric pump 54. On the other hand, the terminals 51a of the retaining valve 51, 52a of the pressure reducing valve 52, and 54a of the electric pump 54 are exposed from the sealing portion 90. In other embodiments, the sealing portion 90 may cover the entire main surface 61 of the housing 60.

[0026] <Manufacturing method for braking devices> A brief explanation of the manufacturing method for the braking device 30 will be provided. The manufacturing method for the braking device 30 comprises a mounting step, an adhesive step, and a sealing step.

[0027] The mounting process involves mounting the retaining valve 51, the pressure reducing valve 52, and the electric pump 54 into the housing 60. In the mounting process, it is preferable that the retaining valve 51, the pressure reducing valve 52, and the electric pump 54 are fixed to the housing 60 with fastening members such as screws.

[0028] The bonding process is a process of bonding the joint 70 to the housing 60 using an adhesive. The bonding process may be a post-process or a pre-process of the mounting process. For example, in the bonding process, first, the adhesive is applied to the annular groove 65 of the housing 60. Subsequently, the inner wall 72 of the joint 70 is inserted into the annular groove 65 of the housing 60, and the multiple engagement walls 74 of the joint 70 are each inserted into the multiple engagement grooves 66 of the housing 60. At this time, the tip surfaces of the multiple engagement walls 74 of the joint 70 come into contact with the multiple engagement grooves 66 of the housing 60 before the tip surface of the inner wall 72 of the joint 70 comes into contact with the bottom surface of the annular groove 65 of the housing 60. Therefore, the inner wall 72 of the joint 70 does not come into contact with the bottom surface of the annular groove 65 of the housing 60. As a result, the tip surface of the inner wall 72 of the joint 70 is securely bonded to the bottom surface of the annular groove 65 of the housing 60. Furthermore, the side surface of the inner wall 72 of the joint 70 is bonded to the side surface of the annular groove 65 of the housing 60. In other words, the joint 70 is fixed to the main surface 61 of the housing 60.

[0029] The sealing process is a post-process after the mounting and bonding processes. The sealing process involves sealing the retaining valve 51, the pressure reducing valve 52, and the electric pump 54 together with the coupling portion 70 of the intermediate product of the braking device 30 that has undergone the mounting and bonding processes. The sealing process involves pouring molten resin into a mold in which the intermediate molded product is placed, and then curing the resin. By performing the sealing process, the sealing portion 90 is formed. The sealing process may employ either a transfer method or a compression method. Furthermore, in the sealing process, since the molten resin flows on the main surface 61 of the housing 60, the molten resin also reaches the space between the main surface 61 of the housing 60 and the upper wall 71 of the coupling portion 70. In other words, the sealing portion 90 is formed not only on the surfaces of the retaining valve 51, the pressure reducing valve 52, the electric pump 54, and the coupling portion 70, but also between the housing 60 and the coupling portion 70.

[0030] <Operation and Effects of the First Embodiment> (1-1) As shown in Figure 2, the braking device 30 is fixed to the main surface 61 of the housing 60 and includes a sealing portion 90 that seals the retaining valve 51, the pressure reducing valve 52, and the electric pump 54. Therefore, the braking device 30 can enhance the water resistance of the retaining valve 51, the pressure reducing valve 52, and the electric pump 54 mounted on the main surface 61 of the housing 60. Furthermore, the braking device 30 seals the retaining valve 51, the pressure reducing valve 52, and the electric pump 54 by the sealing portion 90 and the coupling portion 70 without using parts such as cases, covers, gaskets, and screws that were required in conventional braking devices. Therefore, it is possible to reduce the number of parts compared to conventional braking devices, which can contribute to simplifying the manufacturing process and reducing costs.

[0031] (1-2) In the braking device 30, it can be difficult to increase the bonding strength between the metal housing 60 and the resin sealing portion 90. In this regard, in the first embodiment, the braking device 30 has a resin connecting portion 70 between the main surface 61 of the housing 60 and the sealing portion 90. The connecting portion 70 is bonded to the housing 60 by an adhesive layer 80 with high adhesion between metal and resin, while also being firmly bonded to the sealing portion 90, which is made of resin. Therefore, the braking device 30 can increase the bonding strength between the housing 60 and the sealing portion 90 by having a connecting portion 70 with high bonding strength to both the housing 60 and the sealing portion 90.

[0032] (1-3) As shown in Figure 2, in the braking device 30, the coupling portion 70 surrounds the retaining valve 51, the pressure reducing valve 52, and the electric pump 54. Therefore, the braking device 30 can prevent liquids and the like from entering the inside of the coupling portion 70 through the interface between the housing 60 and the sealing portion 90.

[0033] (1-4) For example, when bonding the joint 70 to the main surface 61 of the housing 60 in close contact, uneven bonding may occur due to the unevenness of the bonding surface of the housing 60 to the joint 70 and the unevenness of the bonding surface of the joint 70 to the housing 60. In this regard, in the first embodiment, the braking device 30 secures a gap GP for placing adhesive between the bonding surface of the housing 60 to the joint 70 and the bonding surface of the joint 70 to the housing 60. Specifically, the braking device 30 can secure a gap GP for forming an adhesive layer 80 between the tip surface of the inner wall 72 of the joint 70 and the bottom surface of the annular groove 65 of the housing 60 by bringing the tip surface of the engaging wall 74 of the joint 70 into contact with the bottom surface of the engaging groove 66 of the housing 60. As a result, the adhesive strength between the housing 60 and the joint 70 is increased.

[0034] Furthermore, the bottom surface of the annular groove 65 of the housing 60 and the front surface of the inner wall 72 of the joint 70 are in close contact with each other via the adhesive layer 80 over the circumferential direction of the joint 70. Also, the upper wall 71 of the joint 70 and the sealing portion 90 are in close contact with each other over the circumferential direction of the joint 70. In this way, the braking device 30 can prevent liquids and the like from entering the inside of the joint 70 through the interface between the housing 60 and the adhesive layer 80, the interface between the adhesive layer 80 and the joint 70, and the interface between the joint 70 and the sealing portion 90.

[0035] (1-5) In the bonding process, the adhesive is applied to the inside of the annular groove 65 of the housing 60. Therefore, the manufacturing method of the braking device 30 allows for a clearer area to be applied to the adhesive and suppresses variations in the amount of adhesive applied, compared to the case where the adhesive is applied to the main surface 61 of the housing 60.

[0036] (1-6) As shown in Figures 4 and 5, the sealing portion 90 is also formed between the housing 60 and the upper wall 71 of the coupling portion 70. Similarly, the sealing portion 90 is also formed between the housing 60 and the outer wall 73 of the coupling portion 70. As a result, the contact area between the sealing portion 90 and the coupling portion 70 is increased. Consequently, the braking device 30 can increase the fixing strength between the coupling portion 70 and the sealing portion 90.

[0037] (Second Embodiment) The braking device 30X according to the second embodiment will now be described. In the braking device 30X according to the second embodiment, components equivalent to those in the braking device 30 according to the first embodiment are denoted by the same reference numerals and their descriptions are omitted.

[0038] As shown in Figures 6 to 8, the braking device 30X includes a retaining valve 51, a pressure reducing valve 52, and a pressure sensor 55. The braking device 30X also includes a housing 110, two coupling parts 140, an adhesive layer 150, and a sealing part 160. The pressure sensor 55 is, for example, a sensor that detects the hydraulic pressure of the brake fluid flowing through the recirculation channel 43.

[0039] The housing 110 is made of a metal material such as aluminum. In the second embodiment, the housing 110 is columnar in shape. Hereafter, the height direction of the housing 110 will be defined as the height direction of the braking device 30X, and the direction perpendicular to the height direction will be defined as the width direction. The housing 110 comprises a mounting section 120 and a main body section 130. The housing 110 also comprises a connecting channel 41, a depressurization channel 42, a recirculation channel 43, and a reservoir 53 inside the housing 110.

[0040] The mounting section 120 is plate-shaped. The cross-sectional shape of the mounting section 120 perpendicular to the height direction is constant with respect to the height direction. When the mounting section 120 is viewed from the height direction, the outer shape of the mounting section 120 is D-shaped, formed by connecting the arc and chord of a circle of a certain diameter. The direction in which the chord extends in the outer shape of the mounting section 120 is the width direction. The mounting section 120 has a main surface 121, a first side surface 122, and a bottom surface 123. The main surface 121 is planar. A retaining valve 51, a pressure reducing valve 52, and a pressure sensor 55 are mounted on the main surface 121 of the housing 110. In this respect, the retaining valve 51, the pressure reducing valve 52, and the pressure sensor 55 correspond to "mounted components". The first side surface 122 is connected to the main surface 121. The first side surface 122 extends from the outer edge of the main surface 121 in a direction perpendicular to the main surface 121. The lower surface 123 is connected to the first side surface 122. The lower surface 123 is a surface parallel to the main surface 121.

[0041] The main body portion 130 protrudes from the lower surface 123 of the mounting portion 120 along the height direction. The main body portion 130 is columnar in shape. The cross-sectional shape of the main body portion 130 perpendicular to the height direction is constant with respect to the height direction. When the main body portion 130 is viewed from the height direction, the outer shape of the main body portion 130 is D-shaped, formed by connecting the arc and chord of a circle of a certain diameter. The outer shape of the main body portion 130 is slightly smaller than the outer shape of the mounting portion 120. In other words, the diameter of the circle that constitutes the outer shape of the main body portion 130 is smaller than the diameter of the circle that constitutes the outer shape of the mounting portion 120. In this respect, the mounting portion 120 can be called the large-diameter portion, and the main body portion 130 can be called the small-diameter portion. In other embodiments, the outer shapes of the mounting portion 120 and the main body portion 130 may be circular or polygonal.

[0042] The main body 130 has a second side surface 131, an annular groove 132, and two engagement grooves 133. The second side surface 131 extends from the lower surface 123 of the mounting portion 120 in a direction perpendicular to the lower surface 123. The annular groove 132 is annular in shape. The annular groove 132 is provided on the second side surface 131, extending in the circumferential direction of the second side surface 131. The two engagement grooves 133 are rectangular in shape. The two engagement grooves 133 are provided on both sides of the second side surface 131 in the width direction. The two engagement grooves 133 are provided on the second side surface 131 so as to be adjacent to the annular groove 132. In the height direction, the annular groove 132 is located between the two engagement grooves 133 and the mounting portion 120. In other words, the distance from the lower surface 123 of the mounting portion 120 to the two engagement grooves 133 is longer than the distance from the lower surface 123 of the mounting portion 120 to the annular groove 132. Regarding the arrangement of the annular groove 132 and the engagement grooves 133 in the height direction, the engagement grooves 133 may be provided between the mounting portion 120 and the annular groove 132.

[0043] The two connecting parts 140 are made of resin material. The two connecting parts 140 have a symmetrical shape with respect to the width direction. The two connecting parts 140 have a side wall 141, an upper wall 142, and an engaging wall 143. The side wall 141, upper wall 142, and engaging wall 143 are all plate-shaped. The thickness direction of the side wall 141 is perpendicular to the height direction, and the thickness direction of the upper wall 142 and engaging wall 143 is the height direction. The side wall 141 and upper wall 142 extend in a U-shape when viewed from the height direction. The cross-sectional shape of the side wall 141 and upper wall 142 perpendicular to the longitudinal direction is rectangular. The upper wall 142 is provided along the longitudinal direction of the side wall 141. The upper wall 142 has a shape corresponding to the annular groove 132 of the housing 110. Hereafter, the end faces of the side wall 141 and the upper wall 142 in the longitudinal direction will be referred to as "opposing surfaces 144". The opposing surfaces 144 are planes perpendicular to the width direction. The engaging wall 143 is provided in the central part of the side wall 141 in the longitudinal direction. The engaging wall 143 faces the upper wall 142 in the height direction. The engaging wall 143 has a shape corresponding to the engaging groove 133 of the housing 110.

[0044] The two connecting parts 140 engage with the housing 110. More specifically, the upper walls 142 of the two connecting parts 140 are inserted into the annular grooves 132 of the housing 110. At this time, a gap GP exists between the upper walls 142 of the two connecting parts 140 and the bottom surface of the annular grooves 132 of the housing 110. In addition, the engaging walls 143 of the two connecting parts 140 are inserted into the two engaging grooves 133 of the housing 110, respectively. At this time, the engaging walls 143 of the two connecting parts 140 are in contact with the bottom surfaces of the two engaging grooves 133 of the housing 110, respectively. Furthermore, the two opposing surfaces 144 of one connecting part 140 are in contact with the two opposing surfaces 144 of the other connecting part 140. Preferably, the two opposing surfaces 144 are joined together by an adhesive or the like. Thus, in the situation where the two connecting parts 140 are joined to the housing 110, the two connecting parts 140 form an annular shape.

[0045] The adhesive layer 150 exists between the annular groove 132 of the housing 110 and the upper walls 142 of the two joints 140. In other words, the adhesive layer 150 adheres the housing 110 to the two joints 140. More specifically, the adhesive layer 150 adheres the bottom surface of the annular groove 132 of the housing 110 to the upper walls 142 of the two joints 140. In this respect, the two joints 140 can be said to be fixed to the main body 130 of the housing 110 by the adhesive layer 150. The upper walls 142 of the two joints 140 that are adhered to the housing 110 can also be called "joint walls". The adhesive layer 150 is formed by the curing of the adhesive.

[0046] The sealing portion 160 is a resin mold made of thermoplastic resin. The sealing portion 160 covers the mounting portion 120 and main body portion 130 of the housing 110, the two connecting portions 140, the retaining valve 51, the pressure reducing valve 52, and the pressure sensor 55. However, the sealing portion 160 does not cover the entire main body portion 130 of the housing 110, but only a part of it. In this case, the sealing portion 160 is fixed to the mounting portion 120 and main body portion 130 of the housing 110, the connecting portions 140, the retaining valve 51, the pressure reducing valve 52, and the pressure sensor 55. The terminals 51a of the retaining valve 51, 52a of the pressure reducing valve 52, and 55a of the pressure sensor 55 are exposed from the sealing portion 160.

[0047] The manufacturing method for the braking device 30X is the same as in the first embodiment, and includes a mounting step, an adhesive step, and a sealing step. Therefore, a detailed explanation is omitted. <Operation and Effects of the Second Embodiment> The second embodiment differs in that the joint 140 is bonded to the second side surface 131 of the housing 110, but it can obtain the same effects and benefits (1-2) to (1-5) as the first embodiment. Furthermore, the second embodiment can obtain the following effects and benefits.

[0048] (2-1) The braking device 30X is fixed to the main surface 121, first side surface 122, bottom surface 123 and second side surface 131 of the housing 110 and includes a sealing portion 160 that seals the retaining valve 51, the pressure reducing valve 52 and the pressure sensor 55. Therefore, the braking device 30X can improve the water resistance of the retaining valve 51, the pressure reducing valve 52 and the pressure sensor 55 which are mounted on the main surface 121 of the housing 110.

[0049] (2-2) In the case of the housing 110, if the portion that is fixed to the sealing portion 160 is limited to the main surface 121, the area of ​​the main surface 121 of the housing 110 tends to increase in order to secure the area of ​​the sealing portion 160 that is fixed to the housing 110. Also, in the case of the housing 110, if an annular groove 132 is provided on the main surface 121, the area of ​​the main surface 121 of the housing 110 tends to increase. In this respect, in the second embodiment, the sealing portion 160 is fixed not only to the main surface 121 of the housing 110 but also to the side surface of the housing 110. Therefore, the area of ​​the sealing portion 160 that is fixed to the housing 110 is secured without increasing the area of ​​the main surface 121 of the housing 110. Also, in the case of the housing 110, since the annular groove 132 is provided on the second side surface 131, there is no need to enlarge the main surface 121 of the housing 110. In this respect, the braking device 30X can be made to avoid increasing its size.

[0050] (2-3) In the housing 110, the annular groove 132 is provided in the main body portion 130, which is slightly smaller in outer diameter than the mounting portion 120. Therefore, even when the connecting portion 140 is bonded to the housing 110, the amount of protrusion of the connecting portion 140 from the housing 110 in a direction perpendicular to the height direction can be suppressed. As a result, the size of the braking device 30X can be kept down. In addition, the reduced size of the housing 110 makes it possible to reduce the weight of the braking device 30X.

[0051] (2-4) As shown in Figure 8, the sealing portion 160 is also formed between the second side surface 131 of the housing 110 and the side walls 141 of the two connecting portions 140. Therefore, the contact area between the sealing portion 160 and the two connecting portions 140 is increased, which allows the braking device 30X to increase the fixing strength of the sealing portion 160.

[0052] (2-5) In the width direction, the two connecting parts 140 engage with the housing 110 by sandwiching it between them. Therefore, even if an annular groove 132 is provided on the side surface of the housing 110, it is possible to position the upper walls 142 of the two connecting parts 140 inside the annular groove 132 along the circumferential direction of the annular groove 132.

[0053] (Third embodiment) The braking device 30Y according to the third embodiment will now be described. In the braking device 30Y according to the third embodiment, components equivalent to those in the braking devices 30 and 30X according to the first and second embodiments will be denoted by the same reference numerals and their descriptions will be omitted.

[0054] As shown in Figures 9 to 11, the braking device 30Y includes a retaining valve 51, a pressure reducing valve 52, and a pressure sensor 55. The braking device 30Y also includes a housing 210, a coupling portion 240, an adhesive layer 250, and a sealing portion 260.

[0055] The housing 210 is made of a metal material such as aluminum. In the third embodiment, the housing 210 is columnar in shape. Hereafter, the height direction of the housing 210 will be defined as the height direction of the braking device 30Y, and the direction perpendicular to the height direction will be defined as the width direction. The housing 210 comprises a mounting section 220 and a main body section 230. The housing 210 also comprises a connecting passage 41, a depressurization passage 42, a recirculation passage 43, and a reservoir 53 inside the housing 210.

[0056] The mounting section 220 is plate-shaped. The cross-sectional shape of the mounting section 220 perpendicular to the height direction is constant with respect to the height direction. When the mounting section 220 is viewed from the height direction, the outer shape of the mounting section 220 is D-shaped, formed by connecting the arc and chord of a circle of a certain diameter. The direction in which the chord extends in the outer shape of the mounting section 220 is the width direction. The mounting section 220 has a main surface 221, a first side surface 222, and a bottom surface 223. The main surface 221 is planar. A retaining valve 51, a pressure reducing valve 52, and a pressure sensor 55 are mounted on the main surface 221 of the housing 210. In this respect, the retaining valve 51, the pressure reducing valve 52, and the pressure sensor 55 correspond to "mounted components". The first side surface 222 is connected to the main surface 221. The first side surface 222 extends from the outer edge of the main surface 221 in a direction perpendicular to the main surface 221. The lower surface 223 is connected to the first side surface 222. The lower surface 223 is a surface parallel to the main surface 221.

[0057] The main body portion 230 protrudes from the lower surface 223 of the mounting portion 220 along the height direction. The main body portion 230 is columnar in shape. The cross-sectional shape of the main body portion 230 perpendicular to the height direction is constant with respect to the height direction. When the main body portion 230 is viewed from the height direction, the outer shape of the main body portion 230 is D-shaped, formed by connecting the arc and chord of a circle of a certain diameter. The outer shape of the main body portion 230 is slightly smaller than the outer shape of the mounting portion 220. In other embodiments, the outer shapes of the mounting portion 220 and the main body portion 230 may be circular or polygonal. The main body portion 230 has a second side surface 231. The second side surface 231 extends from the lower surface 223 of the mounting portion 220 in a direction perpendicular to the lower surface 223.

[0058] The joint 240 is made of a resin material. The joint 240 has an upper wall 241 and a side wall 242. The upper wall 241 and the side wall 242 form an annular shape when viewed from the height direction. The cross-sectional shape of the upper wall 241 and the side wall 242 perpendicular to the circumferential direction is rectangular. The side wall 242 extends from the upper wall 241 along the height direction. The side wall 242 is provided along the circumferential direction of the upper wall 241. In any cross-sectional view perpendicular to the height direction, the inner diameter of the side wall 242 is larger than the inner diameter of the upper wall 241.

[0059] The coupling portion 240 engages with the housing 210. More specifically, the main body portion 230 of the housing 210 is inserted into the coupling portion 240. At this time, the lower surface 223 of the housing 210 faces the upper wall 241 of the coupling portion 240 in the height direction. When viewed from the height direction, the outer shape of the upper wall 241 of the coupling portion 240 is larger than the outer shape of the mounting portion 220 of the housing 210. The fitting relationship between the main body portion 230 of the housing 210 and the upper wall 241 of the coupling portion 240 may be an interference fit, a clearance fit, or an intermediate fit. When an interference fit is adopted, the adhesive layer 250 described below can be omitted.

[0060] The adhesive layer 250 is located between the lower surface 223 of the housing 210 and the upper wall 241 of the joint 240. In other words, the adhesive layer 250 adheres the housing 210 and the joint 240. In this respect, the joint 240 can be said to be fixed to the lower surface 223 of the mounting portion 220 of the housing 210 by the adhesive layer 250. The upper wall 241 of the joint 240 that is adhered to the housing 210 can also be called a "joint wall". The adhesive layer 250 is formed by the curing of the adhesive. Note that the adhesive layer 250 may also be located between the second side surface 231 of the housing 210 and the joint 240.

[0061] The sealing portion 260 is a resin mold made of thermoplastic resin. The sealing portion 260 covers the mounting portion 220 and main body portion 230, the coupling portion 240, the retaining valve 51, the pressure reducing valve 52, and the pressure sensor 55 of the housing 210. However, the sealing portion 260 does not cover the entire main body portion 230 of the housing 210, but only a part of it. In this case, the sealing portion 260 is fixed to the mounting portion 220 and main body portion 230, the coupling portion 240, the retaining valve 51, the pressure reducing valve 52, and the pressure sensor 55 of the housing 210. The terminals 51a of the retaining valve 51, 52a of the pressure reducing valve 52, and 55a of the pressure sensor 55 are exposed from the sealing portion 260.

[0062] The manufacturing method for the braking device 30Y is the same as in the first embodiment, and includes a mounting step, an adhesive step, and a sealing step. Therefore, a detailed explanation is omitted. <Operation and Effects of the Third Embodiment> The third embodiment differs in that the joint 240 is bonded to the lower surface 223 of the housing 210, but it can obtain the same effects and advantages as the first embodiment (1-2), (1-3) and the second embodiment (2-1), (2-2), (2-4). Furthermore, the third embodiment can obtain the following effects and advantages.

[0063] (3-1) The coupling portion 240 is bonded to the lower surface 223 of the mounting portion 220 of the housing 210 while the main body portion 230 of the housing 210 is inserted into it. This makes it possible to bond the coupling portion 240 to the housing 210 while suppressing the complexity of the structure between the housing 210 and the coupling portion 240. Thus, the braking device 30Y can suppress the complexity of the structure between the housing 210 and the coupling portion 240.

[0064] <Example of changes> The above-described embodiments can be implemented with the following modifications. The embodiments and the following modifications can be combined with each other to the extent that they do not conflict with the technical standards.

[0065] In the first embodiment, the mounted component may be various sensors that detect the hydraulic pressure and temperature of the brake fluid, or it may be other components. The mounted component may be any component that is mounted on the main surface 61 of the housing 60. The same applies to other embodiments.

[0066] In the first embodiment, the annular groove 65 in the housing 60 may be divided into a plurality of grooves in the circumferential direction of the annular groove 65. In this case, the inner wall 72 of the joint 70 has a shape corresponding to the plurality of grooves that divide the housing 60. The same applies to the second embodiment.

[0067] In the first embodiment, the housing 60 may have at least one engagement groove 66. If the housing 60 has one engagement groove 66, the engagement groove 66 is annular in shape and surrounds the annular groove 65 in the circumferential direction.

[0068] In the housing 60 of the first embodiment, the multiple engagement grooves 66 may be located inside the annular groove 65. In this case, in the coupling portion 70, the multiple engagement walls 74 are arranged inside the inner wall 72.

[0069] In the first embodiment, the manner in which the housing 60 and the joint 70 are bonded via the adhesive layer 80 can be modified as appropriate. For example, the leading edge of the inner wall 72 of the joint 70 may be in contact with the bottom surface of the annular groove 65 of the housing 60. Even in this case, the joint 70 is fixed to the housing 60 because the adhesive layer 80 is interposed between the side surface of the annular groove 65 of the housing 60 and the side surface of the inner wall 72 of the joint 70. The same applies to the second embodiment.

[0070] In the first embodiment, the connecting portion 70 may be attached to the housing 60 by a method other than adhesive, as long as it is fixed to the main surface 61. For example, the connecting portion 70 may be fixed to the housing 60 by fastening members such as screws. The same applies to other embodiments.

[0071] In the first embodiment, the joint 70 may be made of a material different from the resin material. The same applies to other embodiments. In the first embodiment, the braking device 30 does not need to include the coupling portion 70. In this case, the sealing portion 90 is fixed to the housing 60 without the coupling portion 70. The same applies to other embodiments.

[0072] In the housing 110 according to the second embodiment, the external shape of the main body portion 130 may be the same as the external shape of the mounting portion 120. In the second embodiment, the two connecting parts 140 may be connected to each other by a so-called snap fit.

[0073] As used herein, the expression "at least one" means "one or more" of the desired options. For example, as used herein, if there are two options, the expression "at least one" means "only one option" or "both of the two options." As another example, as used herein, the expression "at least one" means "only one option" or "any combination of two or more options" if there are three or more options. [Explanation of symbols]

[0074] 10... Vehicles 11...Wheel 30,30X,30Y…braking device 51…Retaining valve (mounted component) 52… Pressure reducing valve (mounted component) 54…Electric pump (mounted component) 55…Pressure sensor (mounted component) 60,110,210… Housing 61,121,221… Main surface 65,132... Ring groove 66,133…Engagement grooves 70,140,240...Joining part 72...Inner wall 74…Engagement wall 80,150,250…adhesive layer 90, 160, 260… Sealing part

Claims

1. A braking device that applies braking force to the wheels of a vehicle by adjusting the hydraulic pressure of the brake fluid, A housing having a passage through which brake fluid flows, Mounted components are mounted on the main surface of the housing, It comprises a sealing portion made of a resin material, which is fixed to the housing and seals the mounted components. Braking device.

2. The sealing portion is fixed to the main surface of the housing. The braking device according to claim 1.

3. It further comprises a coupling portion made of resin material, which is fixed to the housing and sealed in the sealing portion, The housing is made of a metal material. A braking device according to claim 1 or claim 2.

4. The aforementioned coupling portion forms an annular shape surrounding the mounted component. The braking device according to claim 3.

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