CN202732628U

CN202732628U - Check flat washer

Info

Publication number: CN202732628U
Application number: CN 201220361373
Authority: CN
Inventors: 徐静壮
Original assignee: NINGBO HUITONG MACHINE CONNECTTION PARTS CO Ltd
Current assignee: NINGBO HUITONG MACHINE CONNECTTION PARTS CO Ltd
Priority date: 2012-07-24
Filing date: 2012-07-24
Publication date: 2013-02-13
Anticipated expiration: 2022-07-24

Abstract

The utility model relates to a check flat washer and belongs to a fastener. The check flat washer is generally placed between a nut and a connected part and comprises a washer body, wherein a plurality of arc-shaped elastic sheets are distributed on the upper end face and the lower end face of the washer body circumferentially and uniformly; the arc-shaped elastic sheets and the washer body are integrated; and the radius of the arc-shaped elastic sheets is sequentially increased from inside to outside along the washer body. The check flat washer can prevent the nut from loosening when the nut is under strong vibration.

Description

The retaining plain washer

Technical field:

The utility model relates to a kind of fastening piece, specifically is a kind of retaining plain washer.

Background technique:

Plain washer uses comparatively frequent in mechanical connection, and it usually is placed on nut and is connected between the part, is used for preventing that nut from use becoming flexible.Upper and lower two end faces of conventional plain washer mostly are smooth plane, this smooth plane and nut and the frictional force that is connected between part are very little, and when nut was subject to than strong vibration, nut just was easy to occur loosening, therefore, the anti-loosing effect of above-mentioned plain washer still need improve.

The model utility content:

The technical problems to be solved in the utility model is, provides a kind of when nut is subject to than strong vibration, can prevent better that nut from loosening retaining plain washer occuring.

Technical solution of the present utility model is, provide a kind of retaining plain washer with following structure: comprise the packing ring body, wherein, the packing ring body all circumferentially be evenly equipped with a plurality of arc spring laminations on two end faces up and down, arc spring lamination and packing ring body are an integral body, and the radius of arc spring lamination radially increases from inside to outside successively along the packing ring body.

Retaining plain washer described in the utility model, wherein, the quantity of arc spring lamination is 3 or 4 or 5 or 6 or 7 or 8.

Retaining plain washer described in the utility model, wherein, the quantity of arc spring lamination is 6.

After adopting above structure, compared with prior art, the utility model retaining plain washer has the following advantages: after nut is pressed on the utility model retaining plain washer, arc spring lamination will be out of shape stressed, simultaneously, nut can be subject to the reverse elastic force from arc spring lamination, the thread pressure of nut and bolt joint is increased, and frictional force strengthens thereupon, thereby so that nut when being subject to than strong vibration, loosening difficulty has played better anti-loosing effect.

It is the preferred implementation of the utility model retaining plain washer that the quantity of arc spring lamination is 3 or 4 or 5 or 6 or 7 or 8.

It is the preferred forms of the utility model retaining plain washer that the quantity of arc spring lamination is 6.

Description of drawings:

Fig. 1 is the stereochemical structure profile schematic diagram of the utility model retaining plain washer;

Fig. 2 is the sectional structure schematic diagram on edge " A-A " among Fig. 1.

Embodiment:

Below in conjunction with the drawings and specific embodiments the utility model retaining plain washer is described in further detail:

As depicted in figs. 1 and 2, in this embodiment, the utility model retaining plain washer comprises packing ring body 1, packing ring body 1 all circumferentially be evenly equipped with 6 arc spring laminations 2 on two end faces up and down, arc spring lamination 2 is an integral body with packing ring body 1, and the radius of arc spring lamination 2 radially increases from inside to outside successively along packing ring body 1.

The working principle of the utility model retaining plain washer is: after nut is pressed on the utility model retaining plain washer, arc spring lamination 2 will be out of shape stressed, simultaneously, nut can be subject to the reverse elastic force from arc spring lamination 2, the thread pressure of nut and bolt joint is increased, and frictional force strengthens thereupon, thereby so that nut when being subject to than strong vibration, loosening difficulty has played better anti-loosing effect.

Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of the utility model claims.

Claims

1. retaining plain washer, comprise packing ring body (1), it is characterized in that: described packing ring body (1) all circumferentially be evenly equipped with a plurality of arc spring laminations (2) on two end faces up and down, arc spring lamination (2) is an integral body with packing ring body (1), and the radius of arc spring lamination (2) radially increases from inside to outside successively along packing ring body (1).

2. retaining plain washer according to claim 1, it is characterized in that: the quantity of described arc spring lamination (2) is 3 or 4 or 5 or 6 or 7 or 8.

3. retaining plain washer according to claim 2, it is characterized in that: the quantity of described arc spring lamination (2) is 6.