JP2012153330A - Reservoir tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts and to improve the assembly workability of the parts for a check window provided in a reservoir tank.SOLUTION: A window opening 17a of the check window 17 includes an outside opening 17b, which opens at the outside of a reservoir body, and an inside opening 17c, which opens for the outside opening 17b and at the inside of the reservoir body and smaller than the outside opening 17b in an opening area. The opening shape of the inside opening 17c is formed in a vertically long shape; longer in the vertical direction and shorter in the horizontal direction. A closing member 18, made of a transparent member, includes: a cylindrical part 18a fitted into the outer opening 17b; a disk part 18b, which closes one end surface of the cylindrical part 18a; and engagement pieces 18c, 18d, which project from the other end surface of the cylindrical part 18a to be engaged with the inner surface of the reservoir body 8b inserted into the inside opening 17c in an integrated state. The outside opening side 17f of the periphery of the inside opening 17c becomes a reflection surface with the closing member fitted to the window opening.

Description

  The present invention relates to a reservoir tank that stores hydraulic fluid for operating a hydraulic master cylinder of a motorcycle or motorcycle, and more particularly to a reservoir tank having a confirmation window for visually confirming the amount of hydraulic fluid. .

  Conventionally, there is a reservoir tank provided with a confirmation window for visually confirming the amount of hydraulic fluid. As this confirmation window, a transparent plate, a transparent plate, There was one formed by mounting a cylindrical support frame including a reflection plate mounted on the inner surface (see, for example, Patent Document 1).

JP 2006-306194 A

  However, in the thing of the above-mentioned patent document 1, since a transparent plate and a reflecting plate were attached to a support frame, the number of parts increased and the assembly took time. In addition, since the cylindrical support frame is attached to the cylindrical opening, the assembly direction of the support frame cannot be determined during the assembly.

  Accordingly, an object of the present invention is to provide a reservoir tank capable of reducing the number of parts and improving the assemblability.

  In order to achieve the above object, the reservoir tank of the present invention is a reservoir tank provided with a confirmation window for visually recognizing the amount of hydraulic fluid stored therein, wherein the confirmation window is a window opening formed on the side wall of the reservoir body. The window opening is formed in a cylindrical outer opening that opens to the outer side of the reservoir body, and opens to the outer opening and the inner side of the reservoir body. An inner opening having a small opening area, and the opening shape of the inner opening is vertically long and short in the horizontal direction, and the blocking member is formed of a transparent member, and the outer opening A cylindrical portion that is fitted on the inside of the cylindrical portion, a disc portion that closes one end surface of the cylindrical portion, and an inner surface of the reservoir body that protrudes from the other end surface of the cylindrical portion and is inserted into the inner opening. Engage to engage Preparative provided integrally, while wearing the closure member to the window opening, the outside opening portion side of the periphery of said inner opening is characterized by comprising a reflective surface.

  In addition, the disk portion includes an index serving as a guide for visually recognizing the liquid level, the opening shape of the inner opening portion is different from the width size of the upper end portion and the width size of the lower end portion, The upper engaging piece having a width corresponding to the upper end of the inner opening and the lower engaging piece having a width corresponding to the lower end of the inner opening are provided. It is preferable that Furthermore, the window opening can be formed integrally with the reservoir body by casting or cutting.

  According to the reservoir tank of the present invention, the confirmation window can be formed simply by mounting a closing member formed of a transparent member on the window opening formed on the side wall of the reservoir body, thereby reducing the number of parts and improving the assembling property. The cost can be reduced. Further, the opening shape of the inner opening is formed so that the width dimension of the upper end part and the width dimension of the lower end part are different, and the closure member is provided with a width dimension corresponding to the upper end part and the lower end part, respectively. By providing the piece, the assembly direction of the closing member can be easily determined in an appropriate direction. Thereby, when the parameter | index used as the standard for visually recognizing a liquid level is provided in the disc part, an parameter | index can always be arrange | positioned in an appropriate position. Moreover, the window opening can be easily formed by forming the window opening integrally with the reservoir body by casting or cutting.

It is II sectional drawing of FIG. It is a side view of a hydraulic master cylinder device showing an example of the present invention. It is the III-III arrow line view of FIG. FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. It is a perspective view of the closure member which shows one example of the present invention. It is a top view of a hydraulic master cylinder device similarly.

  1 to 6 show an embodiment in which the present invention is applied to a reservoir tank integrally formed with a hydraulic master cylinder for a bar handle vehicle. A hydraulic master cylinder device 4 for a front wheel brake composed of a hydraulic master cylinder 2 and an operating lever 3 is attached to a handle bar 1 that steers the front wheels at the front of the vehicle body of the bar handle vehicle. The cylinder body 2a of the hydraulic master cylinder 2 is fastened to one end portion of the handle bar 1 using mounting bolts 5 and 5, and is disposed on the vehicle body front side of the handle bar 1. A lever holder 2b protrudes from the vehicle body front side of the cylinder body 2a. The operation lever 3 is pivotally attached to the lever holder 2b using the pivot 6 and the grip operation portion 3b is attached to the body of the grip 7. It is attached to the front side so as to be rotatable.

  The cylinder body 2a is provided with a bottomed cylinder hole 2c provided in the inside so as to open toward the operation lever 3, and a reservoir tank 8 is integrally assembled to the upper part. The reservoir tank 8 and the cylinder hole 2c Are communicated via a relief port 2d and a supply port 2e. A piston 9 is inserted into the cylinder hole 2c via a piston cup 10, 10 so as to be fluid-tight and movable, and a hydraulic chamber 11 is defined between the piston 9 and the bottom wall of the cylinder hole 2c. A union hole 12 communicates with the hydraulic chamber 11 in the bottom wall of the cylinder hole 2c. A coiled return spring 13 is contracted between the bottom wall of the cylinder hole 2 c and the piston 9.

  The reservoir tank 8 of the hydraulic master cylinder device 4 includes a reservoir body 8b that stores hydraulic fluid in the liquid storage chamber 8a, a cap 14 that is attached to the reservoir body 8b, an upper opening edge of the reservoir body 8b, and a cap 14. A diaphragm 15 interposed between the outer edge of the cap 14 and a cover body 16 attached to the upper surface of the cap 14. In addition, a confirmation window 17 for visually confirming the amount of hydraulic fluid is formed on the side wall 8c of the reservoir body 8b on the operation lever 3 connection side.

  The confirmation window 17 is formed by attaching a closing member 18 formed of a transparent member to the window opening 17a formed in the side wall 8c. The window opening 17a is integrally formed with the reservoir main body 8b by casting during casting of the reservoir main body, and has a cylindrical outer opening 17b that opens to the outside of the reservoir main body 8b, and the outer opening 17b and the reservoir main body. An inner opening 17c that opens to the inside and has a smaller opening area than the outer opening 17b is provided. The inner opening 17c has an opening shape that is vertically long and short in the horizontal direction, and has a substantially scoop shape in which the upper half expands in a fan shape. The width of the upper end 17d is greater than the width of the lower end 17e. Has also formed longer.

  The closing member 18 protrudes from a cylindrical portion 18a fitted inside the outer opening 17b, a disk portion 18b that closes one end surface of the cylindrical portion 18a, and the other end surface of the cylindrical portion 18a. An upper engagement piece 18c having a width corresponding to the upper end 17d and a lower engagement piece 18d having a width corresponding to the lower end 17e of the inner opening 17c. Engagement portions 18e and 18f that engage with the inner surface of the reservoir body 8b are formed at the distal ends of the pieces 18c and 18d, respectively. Further, the cylindrical portion 18a is provided with a sealing groove 18g for mounting the sealing material 19, and the disc portion 18b is provided with an index 18h (line) as a guideline for visually recognizing the liquid level of the working fluid. And characters).

  The closing member 18 inserts the corresponding engagement pieces 18c and 18d into the upper end 17d and the lower end 17e, respectively, according to the length in the width direction of the upper end 17d and the lower end 17e of the inner opening 17c. By engaging the engaging portions 18e and 18f with the inner surface of the reservoir body 8b, the cylindrical portion 18a is liquid-tightly and securely attached to a predetermined position of the outer opening portion 17b via the sealing material 19. The index 18h of the disk portion 18b can be arranged in an appropriate direction. Further, in a state where the closing member 18 is mounted on the window opening 17a, the hydraulic fluid can flow into the cylindrical portion 18a of the closing member 18 via the inner opening 17c of the window opening 17a. When the confirmation window 17 is viewed from the outside, the outer opening side surfaces 17f on both sides around the inner opening 17c serve as reflection surfaces for facilitating the confirmation of the liquid level of the working fluid.

  As described above, the confirmation window 17 of the present embodiment forms the window opening 17a integrally with the reservoir body 8b, and forms the closing member 18 with a transparent member, and also includes the cylindrical portion 18a and the disc portion 18b. In addition, since the engagement piece and 18c, 18d are integrally provided, and the outer opening side surface 17f is a reflection surface, the number of parts can be reduced, and the cost can be reduced. Further, the assembly direction of the closing member 18 can be easily determined in an appropriate direction, and the indicator 18h provided on the disk portion 18b can be appropriately disposed.

  The present invention is not limited to the one applied to a reservoir tank formed integrally with a hydraulic master cylinder for a bar handle vehicle as in the above-described embodiment, but a reservoir separate from the hydraulic master cylinder. The present invention can be applied to a tank, and can also be applied to a reservoir tank of a hydraulic master cylinder for a clutch. Further, the window opening can be formed integrally with the reservoir body by cutting. Furthermore, the opening shape of the inner opening portion is not limited to the above-described embodiment, and any opening shape may be used as long as it is a vertically long shape that is long in the vertical direction and short in the horizontal direction.

  DESCRIPTION OF SYMBOLS 1 ... Handlebar, 2 ... Hydraulic master cylinder, 2a ... Cylinder body, 2b ... Lever holder, 2c ... Cylinder hole, 2d ... Relief port, 2e ... Supply port, 3 ... Operation lever, 3a ... Turning base, 3b ... Grip operation unit, 4 ... hydraulic master cylinder device, 5 ... mounting bolt, 6 ... pivot, 7 ... grip, 8 ... reservoir tank, 8a ... reservoir chamber, 8b ... reservoir body, 8c ... side wall, 9 ... piston, 10 DESCRIPTION OF SYMBOLS ... Piston cup, 11 ... Hydraulic chamber, 12 ... Union hole, 13 ... Return spring, 14 ... Cap, 15 ... Diaphragm, 16 ... Cover body, 17 ... Confirmation window, 17a ... Opening for windows, 17b ... Outer opening , 17c ... inner opening, 17d ... upper end, 17e ... lower end, 17f ... side surface of outer opening, 18 ... closing member, 18a ... cylindrical part, 18b ... disc part, 18c, 18d ... Piece, 18e, 18f ... engagement portions, 18 g ... seal groove, 18h ... indicator, 19 ... sealing material

Claims (3)

In a reservoir tank provided with a confirmation window for visually recognizing the amount of hydraulic fluid stored therein, the confirmation window is formed by closing a window opening formed in a side wall of the reservoir body with a closing member. The opening includes a cylindrical outer opening that opens to the outer side of the reservoir body, an inner opening that opens to the outer opening and the inner side of the reservoir body, and has an opening area smaller than the outer opening. The opening of the opening is formed in a vertically long shape that is long in the vertical direction and short in the horizontal direction, and the blocking member is formed of a transparent member, and is a cylindrical portion that is fitted inside the outer opening through a sealing material And a disc portion that closes one end surface of the cylindrical portion, and an engaging piece that protrudes from the other end surface of the cylindrical portion and is inserted into the inner opening and engages with the inner surface of the reservoir body, The closing member is mounted on the window opening. In a state, a reservoir tank outer opening side of the periphery of said inner opening, characterized by comprising a reflective surface. The disk portion is provided with an index serving as a guide for visually recognizing the liquid level, and the opening shape of the inner opening portion is different from the width dimension of the upper end portion and the width dimension of the lower end portion. The upper engaging piece having a width corresponding to the upper end of the opening and the lower engaging piece having a width corresponding to the lower end of the inner opening are provided. The reservoir tank according to claim 1. The reservoir tank according to claim 1 or 2, wherein the window opening is formed integrally with the reservoir body by casting or cutting.

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