JPH0433507Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cap with an indicator needle that is fitted onto the shaft end of a rotating shaft of a valve or the like.

[Prior Art] When it is necessary to display the status of a valve at the end of a rectangular shaft of a rotating shaft of a valve or a valve opening/closing device, an arrow or the like has conventionally been attached to the end face of the rectangular shaft.

[Problems to be solved by the invention] Since the square shaft is made of metal, it is not always easy to engrave an arrow on it, and since the area of the end face is small, there is a problem that the engraved arrow cannot be clearly seen.

The present invention was made to solve the above problem, and its purpose is to not only be able to easily attach it to the end of the square shaft of a valve, etc., but also to have an indicator needle attached to indicate the opening and closing of the valve. The aim is to provide a cap that is

[Means for Solving the Problems] In order to achieve the above object, the features of the present invention are as shown in FIG.
A synthetic resin cap 20 to be fitted is attached to the shaft end 12.
The valve is formed to rotate integrally with the valve, and an indicator needle 30 that displays the status of the valve in a large size is fixed to the cap. The cap 20 has an inner cylindrical part 21 that fits onto the shaft end 12 and an outer cylindrical part 22 that covers the bearing part 10.
The inner cylindrical part 21 has a split sleeve shape and is provided with an inner circumferential protrusion 26 that fits into the annular groove 15 of the round shaft part 13 at the end of the shaft.
3 is provided with a prismatic portion 25 that continues to the inner cylindrical portion 22. The square column part 25 has a square hole 24 that fits into the square shaft part 14 of the shaft end part 12. The diagonal periphery of the square hole 24 of the upper surface portion 23 protrudes in the radial direction to form an indicator attachment portion 27. Mounting hole 28 in indicator needle mounting part 27
, and a radial insertion hole 29 is made in the circumferential surface of the outer cylindrical portion 22 directly below the indicator needle attachment portion 27.

The indicator needle 30 is a synthetic resin molded product with a U-shaped cross section, and has a mounting protrusion 31 that fits into the mounting hole 28 on the inner upper surface of the indicator needle, and an insertion protrusion 32 that fits into the insertion hole 29 on the lower part.
are provided respectively.

[Function] When the inner cylindrical part 21 of the cap is pushed into the shaft end 12, the inner cylindrical part 21 expands with the slit and the inner periphery protrusion 2
6 fits into the annular groove 15 of the round shaft portion 13, the cap 20 is easily fixed to the shaft end portion 12. Next, when the indicator needle 30 that indicates the opening/closing of the valve is fitted into each indicator needle mounting portion 27 from the outside in the radial direction, the U-shaped cross section elastically opens and the mounting protrusion 31
Since the insertion protrusion 32 fits into the attachment hole 28 and the insertion hole 29, the indicator needle 30 is fixed to the cap 20.

[Example] The cap of the present invention will be specifically explained based on an example shown in the drawings. As shown in FIGS. 1 to 4, the bearing part 10 of the valve opening/closing device protrudes in a cylindrical shape, and the shaft end 12 of the rotating shaft extends from the center of the bearing part.
protrudes outward. The shaft end portion 12 consists of a round shaft portion 13 and a square shaft portion 14 following the round shaft portion 13, and the round shaft portion 13 is provided with an annular groove 15. The cap 20 is a highly elastic soft synthetic resin molded product, and includes an inner cylindrical portion 21,
An outer cylindrical portion 22 and an upper surface portion 23 that connects both cylindrical portions.
Consisting of The outer cylindrical part 22 covers the bearing part 10, and the inner cylindrical part 21 fits into the shaft end of the rotating shaft 11. A prismatic portion 25 having a square hole 24 that fits into the square shaft portion 14 is formed on the upper surface portion 23 . A square hole 24 is provided in the square column part 25.
A side surface 19 is provided which is perpendicular to the diagonal line. An indicator needle attachment part 27 is provided by protruding the peripheral edge of the diagonal extension of the square hole 24 of the upper surface part 23, and the indicator needle attachment part 2 is provided with an indicator needle attachment part 27.
An axial mounting hole 28 is provided on the upper surface of the 7. A radial insertion hole 29 is provided in the circumferential surface of the outer cylindrical portion 22 directly below the indicator attachment portion 27.

When fitting the square hole of the cap 20 into the shaft end 12, the inner cylindrical portion 21 is fitted with the inner circumferential protrusion 26 by the slit.
expands elastically until it fits into the annular groove 15 of the round shaft portion 13.

The indicator needle 30 is also a highly elastic soft synthetic resin molded product, and when viewed from above, it has a triangular or trapezoidal shape that indicates the direction, and the base of the triangle or trapezoid is located at the side surface 1.
9, the cross section is formed in a U-shape with the indicator needle mounting portion 27 sandwiched therebetween. The indicator needle 30 has a mounting protrusion 31 on the inner upper surface of the U-shaped cross section, and an insertion protrusion 3 on the lower part.
2 are provided respectively. The mounting protrusion 31 is formed with a gentle slope on the entrance side and a vertical surface on the back side, and when the indicator needle 30 is inserted into the indicator needle attachment part 27, the U-shaped cross section opens elastically, but the attachment protrusion 31 automatically closes the mounting hole 28.
Since the insertion protrusion 32 is inserted into the insertion hole 29 on the circumferential surface of the outer cylindrical portion 22, the indicator needle 30 attached to the cap 20 is stable and will not fall off.

When the indicator needle 30 is fitted into the indicator needle attachment part 27 corresponding to the indication from the outside in the radial direction, the attachment protrusion 31 is fitted into the attachment hole 28 and the insertion protrusion 32 is fitted into the attachment hole 29 at the same time, so the indicator needle 30 is fixed to the cap 20. do.

In this manner, the cap 20 not only prevents dust from entering the bearing portion 10, but also the indicator needle 30 attached to the cap 20 is large, so that the open/closed state of the valve can be immediately determined even from a remote location.

When removing the indicator needle 30 from the cap 20, lift the radially inner end of the indicator needle 30 and remove it from the mounting protrusion 3.
1 from the mounting hole 28 and then just push it out from the indicator needle mounting portion 27 in the outer radial direction.

[Effects of the invention] As mentioned above, the cap of the present invention can be attached by simply pushing it into the protruding shaft end of a valve, etc., and a large indicator needle can be easily fixed to the cap. Compared to engraved displays, it is easier to set the display, and since the display is large, the valve status can be seen directly even from a distance, which is an excellent effect. Furthermore, after installation, the user can add an indicator needle as appropriate in accordance with the direction of the flow path.

[Brief explanation of the drawing]

1 and 2 are a cross-sectional view and a plan view of a cap and shaft end of an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a main part of a valve opening/closing device to which the cap of FIG. 1 is attached.
3 and 4 are side and bottom views of the cap of FIG. 1; FIG. In the figure, 10 is a bearing part, 11 is a rotating shaft, 12 is a square shaft end, 13 is a round shaft part, 14 is a square shaft part, 15 is an annular groove, 19 is a side surface, 20 is a cap, and 21 is an inner cylinder. 22 is an outer cylindrical portion, 23 is an upper surface portion, 24 is a square hole, 25 is a prismatic portion, 26 is an inner peripheral protrusion, 27 is an indicator needle mounting portion, 28 is a mounting hole, 29 is an insertion hole, 30 is an indicator needle , 31 indicates a mounting protrusion, and 32 indicates an insertion protrusion, respectively.

Claims (1)

[Claims for Utility Model Registration] 1. A cap made of synthetic resin that is externally fitted onto the shaft end of a rotating shaft protruding from a cylindrical bearing part of a valve, etc. so as to rotate integrally with the shaft end, the shaft end being The base is formed into a round shaft part and the tip is formed into a square shaft part, and the cap consists of an outer cylindrical part that covers the bearing part and an inner cylindrical part that fits into the round shaft part, and the inner cylindrical part has an axial slit. An inner peripheral protrusion that fits into the annular groove of the round shaft part is provided, a prismatic part continuing to the inner cylindrical part is provided on the upper surface part connecting the outer cylindrical part and the inner cylindrical part, and a prismatic part of the square shaft part is provided in the prismatic part. A square hole into which the needle fits is provided, at least two peripheral edges located on a diagonal extension of the square hole of the upper surface part protrude in the radial direction to provide an indicator attachment part, and a mounting hole is drilled in the indicator needle attachment part. , providing a radial insertion hole in the outer cylindrical portion directly below the indicator needle attachment portion;
An indicator needle made of synthetic resin and having a U-shaped cross section is provided in the indicator needle mounting portion to be fitted in the radial direction from the outside, and an inner upper surface of the indicator needle has a mounting protrusion that fits into the mounting hole, and a lower part thereof has an insertion protrusion that fits into the insertion hole. 1. A cap with an indicator needle for a valve or the like, characterized in that the indicator needle is attached to an indicator needle attaching portion of the cap by inserting the cap into the shaft end and attaching the indicator needle to the indicator needle attaching portion of the cap. 2. The valve, etc. according to claim 1 of the utility model registration claim, characterized in that the prismatic portion is provided with a side surface perpendicular to the diagonal of the square hole, and the upper surface of the indicator needle is triangular and one side of the pointer is aligned with the side surface. Cap with indicator needle. 3 Claims 1 or 2 for utility model registration characterized by the provision of three pointer attachment parts
Cap with indicator needle as described in section.