CN2137735Y - Positioning washer - Google Patents

Abstract

The utility model provides a spacing washer, and is characterized in that a convex spacing head (3) higher than the end surface (2) is arranged on the double faces of the spacing washer, a material deposit groove (5) lower than the end surface (2) is arranged on the double faces of the spacing washer, and a head-protecting hole (6) is communicated with the double faces of the spacing washer. The utility model is suitable to be padded between the connection face of the bolt nut (7) or nut (11) and the connected member (9) to have the function of spacing, stopping, fastening and connecting, and is convenient to dismount, overcoming the shortcoming of the existing flat washer that because of some reason, the bolt and nut rotate in the same direction, and the flat washer can not be dismounted all right when the flat washer is in the process of assembly, installation and disassembly of equipment.

Description

Positioning washer

The utility model relates to packing ring, and especially a kind of space washer that convex positioning head, buildup groove is respectively arranged on two-sided and protect a hole is applicable to pad between nuts or nut and connected piece, plays the location stopping function and is fastenedly connected, and also is convenient to its dismounting.

At present, same bolt, the matching used plain washer of nut, in use, though can increase the area of contact between nuts or nut and the connected piece, reduce its pressure,, often because of certain reason, be damaged or get rusty as spiral shell spare silking, tightening or pine when moving back spiral shell spare, bolts and nuts rotation phenomenon in the same way can appear, and bring difficulty for its equipment assembling, installation and removal, for this reason, people can only carry out loading and unloading with instrument or other method set screw nut or nuts.This situation is if occur in high-altitude, danger, dark and dark work in narrow space environment, and it is installed, and repairs or dismantlement work is difficult, certainly will influence the progress of work.This situation occurs, main cause is that existing plain washer does not have stopping function, if at the two-sided convex positioning head that is shaped on of packing ring, its pad between nuts or nut and connected piece, then can be eliminated above-mentioned rotation phenomenon in the same way.

In view of there are the problems referred to above in prior art, the purpose of this utility model is under the situation that keeps existing plain washer advantage, for eliminating above-mentioned rotational problems in the same way, a kind of two-sided convex positioning head that respectively has is provided, buildup groove and the space washer that protects a hole, replace the plain washer pad between nuts or nut and connected piece with it, under the effect of nut or the continuous fastening force of bolt, the top corresponding surface that just contacts of its positioning head, increase along with fastening force, and cut in it by roof pressure, the connection lining bits that the crown point that is positioned squeezes out enter the buildup groove, two-sided the same to protect packing ring with plain washer, fit tightly junction surface, finish the effect that is fastenedly connected connected piece with the location means of retention.

For the utility model packing ring is applicable to the superimposed connection of colony, on it is two-sided to protect a hole site consistent with positioning head position and quantity with quantity so that do not damage positioning head during superimposed use.If in protecting a hole, inject lubricant grease, can prevent that also positioning head gets rusty, prolong its working life.

What this will draw attention to be, the utility model packing ring can not fill up between nuts and connected piece simultaneously, and between nut and the connected piece, otherwise can cause work-handling to be difficult to carry out.

Below in conjunction with accompanying drawing the utility model concrete structure is described in detail.

Fig. 1 is the utility model space washer front view.

Fig. 2 is an A-A cross sectional plan view among Fig. 1.

Fig. 1 and Fig. 2 are model utility specification digest accompanying drawing.

Fig. 3 is embedded in the A-A of spacer ring body (1) in two-sided to the part section plan view for positioning head (3) among Fig. 1 as discrete item.

Fig. 4 is the profile of positioning head (3) and buildup groove (5) on the single face among Fig. 2.

Fig. 5 is Fig. 1, Fig. 2 space washer pad between nuts (7) and connected piece (9) upper connecting surface and the stop that connects between the face under nut (11) and connected piece (9) of a plain washer (10) pad is connected fastening schematic representation fastening and to be positioned.After side opening among the figure (K) was illustrated in the work in narrow space environment and is fastenedly connected with the stop of the utility model packing ring, equipment bolts and nuts in loading and unloading can not rotate in the same way.

Just know that with reference to accompanying drawing the utility model space washer is respectively to be shaped on the positioning head (3) that is higher than end face (2) on it is two-sided, be lower than the buildup groove (5) of end face (2) and communicate with its Double End (2) protect a hole (6).

The buildup groove (5) of positioning head (3) bottom, its capacity are as the criterion with the junction surface clout (8) that holds head (3) roof pressure that is positioned and extrude or are more bigger, are close to and close to protect end face (2) and junction surface.

It is consistent with the quantity of buildup groove (5) that single end face (2) is gone up positioning head (3), is 12 or 3.The quantity of protecting a hole (6) is no less than the quantity that single end face (2) is gone up positioning head (3).

Positioning head (3) is being for just or the wedged bottom cone, or for just or the wedged bottom pyramid.Pyramid positioning head (3) is single rib, triangular or four bank or ridge, wherein will have an acute angle master rib sword to embed the junction surface positioning and fastening of a spiral shell spare (7 or 11) and connected piece (9) along the sense of rotation cutting.

Positioning head (3) top (4) is to the distance of end face (2), and the tapering size of positioning head (3) all depends on material property and the intensity of himself and the hardness of matching used spiral shell spare and connected piece.Usually positioning head (3) top (4) is less than the thickness of spacer ring body (1) to the distance of end face (2), the tapering of positioning head (3) is between 18 ° to 72 °, and the intensity of positioning head (3) and hardness are greater than intensity and the hardness of spiral shell spare (7 or 11) with the junction surface of connected piece (9).

As mentioned above, for being applicable to that colony is superimposed, the utility model is located by connecting, positioning head (3) is evenly distributed on the same concentric circumferences of spacer ring body (1) end face (2) with the center of protecting a hole (6), so that during the superimposed use of spiral shell spare, positioning head (3) does not damage top (4) with to protect a hole (6) corresponding.The size of protecting a hole (6) is as the criterion to hold two positioning heads (3).

The utility model space washer is mainly fabricated metals or on-metallic article.Positioning head on it is two-sided (3) can be an one with spacer ring body (1); Also can be used as discrete item, closely embedding in the spacer ring body (1) with the form of the top positioning head of double end is one (Fig. 3).The latter is suitable for the space washer made with different materials, as rubber or plastic mattress circle body (1) space washer with metal positioning head (3).

The utility model packing ring is a kind of novel packing ring, can be made into the series product of polytype and specification, is widely used, and is convenient to produce by batch.

Claims (8)

1, a kind of space washer is characterized in that it has the convex positioning head (3) that is higher than end face (2) on two-sided, be lower than face (2) buildup groove (5) and with its two-sided communicate protect a hole (6).

2, according to the space washer of claim 1 regulation, it is characterized in that the positioning head (3) on the single end face (2), the quantity unanimity of buildup groove (5), is 1,2 or 3.

3, according to the packing ring of claim 1 regulation, it is characterized in that positioning head (3) for just or the wedged bottom cone, or for just or the wedged bottom pyramid.

4, according to the packing ring of claim 1 or 3 regulations, it is characterized in that pyramid positioning head (3) is single rib, triangular or four bank or ridge.

5,, it is characterized in that positioning head (3) can be one with spacer ring body (1) according to the packing ring of claim 1 regulation; Also can be used as discrete item, closely embedding spacer ring body (1) with the form of the top positioning head of double end is one in two-sided.

6, according to the space washer of claim 1 regulation, it is characterized in that the size of buildup groove (5) capacity, holding that junction surface clout (8) that head (3) roof pressure that is positioned extrudes is as the criterion or more bigger, be close to its junction surface and close to protect end face (2).

7, the packing ring of stipulating according to claim 1, it is characterized in that positioning head (3) protects a hole (6) with it center is evenly distributed on the same concentric circle contour on spacer ring body (1) end face (2) face, so that during the superimposed use of spiral shell spare colony, positioning head (3) does not damage top (4) with to protect a hole (6) corresponding.

8, according to the packing ring of claim 1 regulation, it is characterized in that the size of protecting a hole (6) is as the criterion to hold two positioning heads (3).

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