CN201496380U

CN201496380U - Washer capable of resisting movable load and having locking function

Info

Publication number: CN201496380U
Application number: CN2009200621783U
Authority: CN
Inventors: 刘琰嵬
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-11
Filing date: 2009-08-11
Publication date: 2010-06-02
Anticipated expiration: 2019-08-11

Abstract

The utility model discloses a washer capable of resisting movable load and having locking function. The washer is composed of washer single bodies which have the same structures and are used in pairs, one surface of each washer single body is a helical tooth surface, the other surface opposite to the helical tooth surface is a contact surface, a plurality of big saw skewed teeth which are distributed along the radial direction are distributed on the helical tooth surface, a plurality of big saw skewed teeth are connected on heads and tails, and when the washer is used, the helical tooth surfaces of the two washer single bodies are buckled. The washer of the utility model is a wedge type locking structure, when the washer is used and when connectors and connected components are under the vibration states or under power load functions, only relative movements between the helical tooth surfaces of washer single bodies are allowed, any loosening trends of the connectors can be blocked by wedge effect of the big saw skewed teeth, thereby the washer has excellent anti-loose effect, and can adapt to movable load.

Description

A kind of can anti-dynamic load and have a packing ring of locking functions

Technical field

The utility model relates to a kind of and the matching used packing ring of link, specifically be meant a kind of can anti-dynamic load and have a packing ring of locking functions.

Background technique

Packing ring is connection fittings commonly used in the mechanical field, and normal and links such as bolt, nut are used, be placed on during use between link and the connected piece, thereby to reach the effect that prevents that link from getting loose and being fastenedly connected.Conventional gaskets generally adopts the mode of single packing ring in use, the mode that perhaps a plurality of packing rings stack, be fastenedly connected by the frictional force between packing ring and the link, reach anti-loosing effect, but because the upper and lower surface of this packing ring is plane structure, the packing ring of this plane structure in case when link and connected piece is under the vibrational state or the dynamic load effect under, when external force such as vibration force or living load during greater than the frictional force between packing ring and the link, packing ring just can get loose, and causes locking inefficacy.In addition, anti-loose technical, employing is also arranged, but these scheme anti-loosing effects are also undesirable, and have the defective of discontinuity such as technological schemes such as compression spring, double nuts.

The model utility content

The purpose of this utility model provide a kind of can anti-dynamic load and have the packing ring of locking functions, this gasket construction is simple, easy accessibility, applicable to various links.

Above-mentioned purpose of the present utility model realizes by following technical solution: a kind of can anti-dynamic load and have a packing ring of locking functions, it is characterized in that: described packing ring by two structures identical and packing ring monomer paired use form, one of them face of described packing ring monomer is a pitch face, with pitch face back to another side be surface of contact, be covered with a plurality of pit saw helical teeth that radially distribute on the described pitch face, a plurality of pit saw helical teeth join end to end, when packing ring used, the pitch face of two packing ring monomers was interlocked.

The packing ring monomer that packing ring of the present utility model is used by two complete pairings is formed, the packing ring monomer has pitch face, the pitch face of two packing ring monomers is interlocked during use, be a kind of wedging formula lockmaking structure, this packing ring in use, when link with connected piece is under the vibrational state or dynamic load effect following time, only allow relatively moving between packing ring monomer pitch face, the any loosening trend of link is all stoped by this wedging effect of pit saw helical teeth, therefore, packing ring of the present utility model has good anti-loosing effect, and can be applicable to dynamic load.

In the utility model, the pit saw helical teeth on the described packing ring monomer has inclined angle alpha, and described inclined angle alpha is greater than the lead angle β of coupled link.The inclined angle alpha of pit saw helical teeth is greater than the lead angle β of link such as bolt, nut etc. on the packing ring monomer, even it is loosening after the packing ring monomer is stressed like this, the changing of the relative positions lifting of two packing ring monomers is apart from the lifting distance of meeting greater than screw thread, and packing ring just can effectively be locked the link that is in high vibration or the dynamic load.

In the utility model, radially be provided with the sawtooth of a plurality of radial distributions on the surface of contact of described packing ring monomer.Packing ring in use, its surface of contact contacts with link or connected piece, and radial sawtooth is set on the surface of contact, can increase the frictional force of surface of contact and link or connected piece, strengthens locking, anti-loose function.

Compared with prior art, the utlity model has following remarkable result:

(1) the utility model packing ring can effectively prevent because becoming flexible of causing of vibration and dynamic load has extremely strong locking, anti-loose ability.

(2) the utility model gasket construction is simple, is easy to installation and removal.

(3) the utility model washer locking effect is not subjected to lubricated the influence, has good locking property.

(4) the utility model packing ring pretightening force height all has good locking effect.

(5) the utility model packing ring can be controlled the height of pretightening force.

(6) the utility model packing ring has the temperature characteristic identical with standard bolt/nut, produces temperature stress in preventing to expand with heat and contract with cold.

(7) the utility model packing ring is easy to use, cuts reusable.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further details.

Fig. 1 is the perspective view of the utility model packing ring, shows the state that two packing ring monomers fasten;

Fig. 2 is the plane structure schematic representation of the utility model packing ring;

Fig. 3 is the parts drawing of the utility model packing ring middle washer monomer;

Fig. 4 is the user mode figure of the utility model packing ring, and this moment, packing ring was in locking state;

Fig. 5 is another user mode figure of the utility model packing ring, and this moment, packing ring was in loosening state.

Embodiment

As Fig. 1 to shown in Figure 5 a kind of can anti-dynamic load and have a packing ring of locking functions, packing ring by two structures identical and packing ring monomer 1 paired use form, one of them face of packing ring monomer 1 is a pitch face, with pitch face back to another side be surface of contact, be covered with a plurality of pit saw helical teeth 11 that radially distribute on the pitch face, a plurality of pit saw helical teeth 11 join end to end, when packing ring uses, the pitch face of two packing ring monomers is interlocked, pit saw helical teeth 11 on the packing ring monomer 1 has inclined angle alpha, and inclined angle alpha is greater than the lead angle β of coupled link 2.

Radially be provided with the sawtooth 12 of a plurality of radial distributions on the surface of contact of packing ring monomer 1, to increase the frictional force between packing ring monomer 1 and the link 2.

As shown in Figure 4, when tightening link 2, radial sawtooth on the surface of contact of packing ring monomer 1 is tightly bitten the surface of contact of link 2, the packing ring monomer is fixed, only allow relatively moving of 11 of pit saw helical teeth corresponding on two packing ring monomers, any loosening trend of link 2 is all stoped by this wedging formula lockmaking structure of pit saw helical teeth.

As shown in Figure 5, situation about when with spanner dismounting link 2, occurring, the distance of link 2 liftings that the lifting distance between two packing ring monomers 1 causes greater than sliding because of screw thread, packing ring can effectively be locked the link that is in any vibration or the dynamic load.

Link 2 in the present embodiment can be connected elements such as bolt or nut, and the lead angle β of link then is respectively the lead angle of bolt or nut.

Claims

One kind can anti-dynamic load and have a packing ring of locking functions, it is characterized in that: described packing ring by two structures identical and packing ring monomer paired use form, one of them face of described packing ring monomer is a pitch face, with pitch face back to another side be surface of contact, be covered with a plurality of pit saw helical teeth that radially distribute on the described pitch face, a plurality of pit saw helical teeth join end to end, and when packing ring used, the pitch face of two packing ring monomers was interlocked.
2. according to claim 1 a kind of can anti-dynamic load and have the packing ring of locking functions, it is characterized in that: the pit saw helical teeth on the described packing ring monomer has inclined angle alpha, described inclined angle alpha is greater than the lead angle β of coupled link.
3. according to claim 1 a kind of can anti-dynamic load and have the packing ring of locking functions, it is characterized in that: the sawtooth that radially is provided with a plurality of radial distributions on the surface of contact of described packing ring monomer.