JPH0550137U - Nut with washer - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a nut with a washer that has good workability and has a movable washer. [Structure] A nut body 1 having a screw hole 5 in the center and a flange 4 provided on the peripheral edge of an end face 3 and a bolt guide hole 6 which is aligned with the screw hole 5 of the nut body 1 and are rotatable around the flange 4. And a cap-shaped washer 3 that covers the end face 3 and that has a folded piece 7 that engages with.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a nut with washer such as a work-saving type washer nut.

[0002]

[Prior Art]

 A conventional example is shown in FIGS. 7 and 8. That is, in FIG. 7, the nut 30 and the washer (not shown) are completely separated. Further, in FIG. 8, the nut 30 and the washer 31 are integrated.

[0003]

[Problems to be solved by the device]

 Since the washer and the nut 30 are separated from each other in the nut shown in FIG. 7, it is necessary to take out each of the nuts for use, and the workability is poor. The washer nut shown in FIG. 8 has a drawback in that the washer 31 is integrated with the nut 30 and the original function of the washer at the time of tightening is impaired.

Therefore, an object of the present invention is to provide a washer-attached nut having good workability and having a movable washer.

[0005]

[Means for Solving the Problems]

 The nut with washer of the present invention has a nut body having a flange on the peripheral edge of the end face and a bolt guide hole which is aligned with the screw hole of the nut body, and is a turnback piece which is rotatably engaged with the flange. And a cap-shaped washer that covers the end face.

[0006]

[Action]

 According to the configuration of this invention, when the bolt is passed through the bolt guide hole of the cap washer and the bolt is screwed into the screw hole, the cap washer serves as a washer rotatably interposed between the mounting surface and the nut body. To do. In this case, since the cap washer is attached to the nut body, workability is good, and the cap washer can be rotated with respect to the nut body when tightening the bolt, so that the function as a washer is not impaired.

[0007]

【Example】

 An embodiment of this invention will be described with reference to FIGS. That is, this nut with washer has a nut body 1 and a cap-shaped washer 2. The nut body 1 has a screw hole 5 in the center and a collar 4 on the peripheral edge of the end face 3. The nut body 1 of the embodiment is a work-saving type, and has a case 8 in which a bolt through hole 9 is formed in the bottom, a push-up spring 10 provided in the bottom of the case 8, and a push-up spring 10. The push-up plate 11 has a through hole 12 formed in the center, a screw piece support body 17, and a pair of screw pieces 18 supported by the screw piece support body 17 and the push-up plate 11. The screw piece support 17 has a mounting portion 14 that is overlapped with the opening edge portion 13 of the case 8 and has a hole 15 formed in the center thereof. It has a screw piece guide 16. Further, the screw piece guide 16 includes an inclined wall portion 19 that rotatably supports the inclined back surface of the screw piece 18, and a holder that rotatably holds both sides of the screw piece 18 from both sides of the inclined wall portion 19. And a holding piece 20. The end face 3 is formed on the surface of the screw piece support 17, the collar 4 is composed of the overlapping portion of the opening edge 13 of the case 8 and the peripheral edge of the screw piece support 17, and the screw hole 5 is the hole 15. And a through hole 12 and a bolt through hole 9.

In this nut body 1, when a bolt (not shown) is pushed into the screw hole 5 in the axial direction without rotating, the pair of screw pieces 18 are pushed, so that the back faces of the nut body 1 along the inclined wall portion 19 are mutually connected. The push-up plate 11 is pushed down and the push-up spring 10 is pushed down while spreading in the radial direction away from each other. When the force for pushing down the bolt is released, the screw piece 18 is pushed up along the inclined wall portion 19 by the spring force of the push-up spring 10, so that the pair of screw pieces 18 come close to each other, and the screw portion of the screw piece 18 becomes the screw groove of the bolt. Cut in. Therefore, the bolt can be tightened by rotating it in the tightening direction.

The cap-shaped washer 2 has a bolt guide hole 6 that is aligned with the screw hole 5 of the nut body 1, and has a folding piece 7 that rotatably engages with the collar 4 at its edge portion. Cover. In the embodiment, the bolt guide hole 6 is burred on the nut body 1 side to enlarge the guide portion. As shown in FIG. 2, the folded piece 7 is assembled by stacking the cap washer 2 on the end face 3 of the nut body 1 and bending the folded piece 7 into the collar 4 as shown in FIG.

According to this embodiment, when the bolt is inserted into the screw hole 5 through the bolt guide hole 6 of the cap washer 2 and the screw is tightened, the cap washer 2 is rotatable between the mounting surface and the nut body 1. It acts as an intervening washer. In this case, since the cap washer 2 is attached to the nut body 1, the workability is good, and the cap washer 2 can be rotated with respect to the nut body 1 when tightening the bolt. Does not impair functionality.

Further, in the embodiment, the work-saving type nut is used. In the nut body 1, the screw piece 18 can be seen through the hole 6 and there is a lot of catching at the time of inserting the bolt, but it is difficult to insert and retighten, but the nut body 1 is the bolt. Since it is covered with a cap-shaped washer 2 having a guide hole 6, it is possible to prevent foreign matter from entering inside and avoid troubles, and the appearance is good because the inside can be seen through the bolt guide hole, and the bolt passes through the bolt guide hole 6 Since it is inserted, it is easy to insert bolts and tightened easily, improving operability.

FIGS. 4 to 6 show another embodiment, and FIG. 4 shows an example in which an adhesive is attached to the surface of the cap-shaped washer 2, and the adhesive seal 21 is peeled off at the time of use to fix the adhesive at the mounting position. .. In this embodiment, only the nut body 1 rotates during the retightening, but safe and reliable mounting work can be performed. FIG. 5 shows an example in which a radial anti-squeeze pattern 22 is formed on the surface of the cap-shaped washer 2, and after tightening, the seat surface of the cap-shaped washer 2 bites into the mounting portion, which has the effect of preventing loosening.

FIG. 6 is an example in which an indicator 23 is formed on the surface of the cap-shaped washer 2 by engraving. Since the seat surface of the cap-shaped washer 2 is wide, it is easy to display and it is easy to accurately convey an appropriate load to the user. Moreover, since it is engraved, it can be expected to have an effect of preventing loosening because it has some irregularities.

[0014]

[Effect of the device]

 According to the nut with washer of the present invention, the nut body having the flange on the peripheral edge of the end face and the folding piece having the bolt guide hole aligned with the screw hole of the nut body and rotatably engaged with the collar are provided. Since the cap-type washer is attached to the nut body because it has a cap-type washer that is provided at the edge and covers the end face, the workability is good and the cap-type washer is attached to the nut body when tightening the bolt. Since it can be rotated, there is an effect that the function as a washer is not impaired.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view of the cap-shaped washer in a separated state.

FIG. 3 is a perspective view of a cap-shaped washer.

FIG. 4 is a perspective view of a cap type washer according to another embodiment of the present invention.

FIG. 5 is a perspective view of a cap-shaped washer of still another embodiment.

FIG. 6 is a perspective view of a cap-shaped washer of still another embodiment.

FIG. 7 is a perspective view of a nut of a conventional example.

FIG. 8 is a perspective view of still another conventional example.

[Explanation of symbols]

 1 Nut body 2 Cap type washer 3 End face 4 Collar 5 Screw hole 6 Bolt guide hole 7 Folding piece 1 ... Nut body 2 ... Cap type washer 3 ... End face 4 ... Collar 5 ... Screw hole 6 ... Bolt guide hole 7 ... Folding piece

Claims (1)

[Scope of utility model registration request] Claims: 1. A nut body having a screw hole in the center and a collar provided on the peripheral edge of the end face, and a bolt guide hole which is aligned with the screw hole of the nut body, and which is rotatably engaged with the collar. A washer-equipped nut having a cap-shaped washer that has a piece at its edge and covers the end face.