JP3170983U - Washer with annular packing - Google Patents

Abstract

Provided is a washer that can be easily and quickly confirmed visually by using an annular packing used as a fluid seal that proper tightening is performed. A disk-shaped washer 1 having a bolt insertion hole 1a and an annular packing 2 having the same diameter as the outer diameter of the washer 1 are provided on the outer peripheral portion of the washer 1 on the seating surface 1b side. An annular packing support portion 1 having a depth smaller than the thickness of the annular packing 2 is formed over the outer periphery from a position having the same diameter as the inner diameter through the step portion 1c. The packing support portion is configured such that the annular packing 2 supported by the packing support portion 1d is elastically deformed by the predetermined tightening load sandwiched in the axial direction on the washer 1, and the outer peripheral portion protrudes annularly from the outer peripheral portion of the washer 1. A 1d depth was formed. [Selection] Figure 4

Description

  The present invention relates to a washer having an annular packing used with a bolt or a nut in a building, a machine facility, or other various applications.

  Conventionally, tightening of screw members such as bolts and nuts is usually temporarily tightened and then tightened sequentially. And as a washer interposed between a volt | bolt or a nut, and a to-be-clamped body, a disc spring washer, a star washer, etc. other than a plain washer are used.

  By the way, in performing the above-described tightening operation of the screw member such as a bolt or nut, it is necessary to manage so that the screw member is not forgotten to be tightened or loosened. In that case, after the screw member is fastened, it is necessary for the operator to check the tightening or looseness of the screw member one by one with a hand or a wrench. Therefore, when many bolts are used, there is a problem that requires a lot of labor for management work.

  Therefore, an object of the present invention is to provide a washer having an annular packing that can be easily and quickly confirmed visually by using an annular packing that is used as a fluid seal.

  In order to solve the above-described problems, the present invention includes a disc-shaped washer having a bolt insertion hole and an annular packing having the same diameter as the outer diameter of the washer. An annular packing support portion having a depth smaller than the thickness of the annular packing is formed from the position having the same diameter as the inner diameter of the ring to the outer periphery through the step portion, and a predetermined tightening load is applied to sandwich the washer in the axial direction. Thus, the depth of the packing support portion is formed such that the annular packing supported by the packing support portion is elastically deformed and the outer peripheral portion protrudes annularly from the outer peripheral portion of the washer.

  According to the washer having the annular packing according to claim 1 of the present invention, the depth of the washer is smaller than the thickness of the annular packing from the position substantially the same diameter as the inner diameter of the annular packing to the outer periphery of the washer surface. An annular packing support portion is formed, and a predetermined tightening load that sandwiches the washer in the axial direction acts, whereby the annular packing supported by the packing support portion is elastically deformed, and the outer peripheral portion thereof is separated from the outer peripheral portion of the washer. Since the depth of the packing support portion is formed so as to protrude in an annular shape, it is possible to confirm whether proper tightening is performed by visually confirming the degree of protrusion from the outer peripheral portion of the washer of the annular packing. Therefore, it is possible to easily and quickly confirm that the proper tightening is performed by using an annular packing used as a seal for fluid such as water, air, or oil.

It is a perspective view of the decomposition | disassembly state of a washer provided with the annular packing which concerns on this invention. It is a longitudinal cross-sectional view in the same decomposition | disassembly state. It is a partially omitted vertical sectional view before tightening with a bolt. It is a partially abbreviated longitudinal sectional view after tightening with a bolt. It is a longitudinal cross-sectional view of another annular packing. It is a longitudinal section of another annular packing. It is a longitudinal cross-sectional view of another washer.

  Embodiments of a washer having an annular packing according to the present invention will be described below with reference to the drawings.

  As shown in FIGS. 1 and 2, the washer provided with an annular packing includes an annular packing comprising a disc-shaped washer 1 having a bolt insertion hole 1a in the center and an O-ring having substantially the same diameter as the outer diameter of the washer 1. 2 are provided. An annular packing support portion 1d having a depth smaller than the thickness of the annular packing 2 is formed on the outer peripheral portion of the washer 1 on the side of the seating surface 1b from the position substantially the same diameter as the inner diameter of the annular packing 2 through the step portion 1c. ing.

  As shown in FIGS. 3 and 4, when a predetermined tightening load is applied to sandwich the washer 1 in the axial direction, the annular packing 2 supported by the packing support portion 1d is compressed in the axial direction by the compression and elastic. The depth of the packing support portion 1d is formed such that the outer peripheral portion is deformed and protrudes annularly from the outer peripheral portion of the washer 1.

  The washer 1 is made of an iron-based metal material. In addition, the material of the washer 1 may be a non-ferrous metal or other materials. Further, the surface side of the washer 1 is formed into a smooth surface so as not to rotate around when a bolt or nut described later rotates. On the other hand, the material of the annular packing 2 is a rubber material or a resin material excellent in sealing performance.

  Next, the operation of the washer 1 provided with the annular packing 2 configured as described above will be described.

  In use, the bolt 3 is inserted into the bolt insertion hole 1a in a state where the annular packing 2 is supported by the packing support portion 1d of the washer 1 as shown in FIG. The bolt 3 provided with the washer 1 and the annular packing 2 is screwed into the member to be tightened 4 as shown in FIG. Then, by applying a predetermined tightening load that sandwiches the washer 1 in the axial direction, the annular packing 2 supported by the packing support portion 1d is compressed in the axial direction and elastically deformed, and its outer peripheral portion is the outer peripheral portion of the washer 1. It will protrude from the ring. The annular packing 2 is thus elastically deformed and the outer peripheral portion thereof protrudes annularly from the outer peripheral portion of the washer 1 when the bolt 3 is tightened to a predetermined tightening load. By visually observing the protrusion of the ring, it can be easily and quickly confirmed whether or not it is tightened with a predetermined tightening load.

  In the above-described embodiment, the case where the bolt 3 is fixed using the washer 1 provided with the annular packing 2 has been described. However, the washer 1 provided with the annular packing 2 is the same as a washer for a nut (not shown). In this case, the same operation and effect as those of the bolt 3 described above can be obtained.

  Moreover, as the cross-sectional shape of the annular packing 2 to be used, it is sufficient if the outer peripheral portion of the annular packing 2 is elastically deformed by tightening in the axial direction of the washer 1 so that the outer peripheral portion protrudes annularly from the outer peripheral portion of the washer 1. The sectional shape is not limited to a circular or O-shaped O-ring. For example, an annular packing 21 used for a piston seal having a sectional shape composed of two members as shown in FIG. An annular packing 22 used for a rod seal having a cross-sectional shape may be used. Furthermore, you may make it color each conspicuous color, such as red and yellow, for example to each annular packing 2,21,22 to be used. When coloring is performed in this way, the annular protrusion of the annular packing 2 can be visually confirmed more clearly.

  FIG. 7 shows another embodiment in which the washer 1 has a holding function of the annular packing 2. In that case, the step portion 1c of the washer 1 is tapered so that the diameter decreases from the tip end side to the base portion side, and the inner surface portion of the annular packing 2 is fitted into the step portion 1c, thereby the tip end portion of the step portion 1b. Thus, the annular packing 2 is engaged with and held by the washer 1. Thus, if the washer 1 is provided with the function of holding the annular packing 2, the handling becomes easy and the bolts 3 and nuts can be tightened easily.

DESCRIPTION OF SYMBOLS 1 Washer 1a Bolt insertion hole 1b Seat surface 1c Step part 1d Packing support part 2 Ring packing 21 Ring packing 22 Ring packing

Claims (1)

  Equipped with a disc-shaped washer having a bolt insertion hole and an annular packing having the same diameter as the outer diameter of the washer. An annular packing support portion having a depth smaller than the thickness of the packing is formed, and a predetermined tightening load that sandwiches the washer in the axial direction acts, so that the annular packing supported by the packing support portion is elastically deformed. A washer having an annular packing, wherein the depth of the packing support portion is formed such that the outer peripheral portion protrudes annularly from the outer peripheral portion of the washer.

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