CN209483796U

CN209483796U - Spring Anti-removing nuts

Info

Publication number: CN209483796U
Application number: CN201920142898.4U
Authority: CN
Inventors: 付杨超; 罗楚妍; 付刘裕
Original assignee: Individual
Current assignee: State Grid Sichuan Electric Power Co Ltd
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2019-10-11
Anticipated expiration: 2029-01-28

Abstract

A kind of spring Anti-removing nuts, including being used as the nut being screwed on screw rod, the rear portion in nut precession direction is provided with an annular groove；Also there is tapered auger compressed spring, the hand of spiral of the spring and the hand of spiral of nut are identical, the big end rear portion of the spring is connected in the annular groove of nut, above equal diameter part of the circle of the small end of the spring at least 1 half, and the equal diameter part of the spring can form spiral connection relationship with screw rod.The utility model have structure it is simple, low manufacture cost, it is easy to promote and utilize, Anti-dismantling effect is good the features such as.

Description

Spring Anti-removing nuts

Technical field

The utility model relates to machanical fasteners, especially with the bolt and nut fastener of tamper function.

Background technique

Nut and screw rod are screwed on cooperation, are formed for the parts with through-hole that fasten two.Existing nut and screw rod are (also referred to as Bolt, it is formed by head and with externally threaded cylindrical body) fastening after, under external force, will cause connection loosen, to machine Tool equipment belt carrys out insecurity factor.

It loosens, has using the method for installing spring washer additional, spring washer can play anti-to a certain extent in order to prevent The only effect of nut connection loose or dislocation.

Chinese patent literature discloses " a kind of anti-disassembling nut " (ZL2018113639596), by basal body of nut and nut Composition, the inner and outer wall of basal body of nut are threaded the identical internal screw thread of rotation direction and external screw thread, basal body of nut locking respectively The end at end is outward extended with annular stop platform, and the basic outer wall of nut is machined with spanner slot；The inner wall of nut has and nut base The internal screw thread that external wall external screw thread matches, nut outer wall are multi-prismatic surface；Nut is screwed in basal body of nut outer wall, and acts against On the annular stop platform of basal body of nut；The tightness that nut is threadedly coupled with basal body of nut is less than basal body of nut and bolt thread connects The tightness connect.It there are structures it is more complex, difficulty of processing is larger the features such as.

Existing other Anti-removing nuts easily damage screw flight during tamper, and a whole set of bolt is caused to become one Secondary property product, therefore, common Anti-removing nuts cannot be widely used in traffic, communication, electric power and urban operating mechanism.

Utility model content

The spring Anti-removing nuts that the purpose of the utility model is to provide a kind of structures simply, tamper effect is good.

Purpose of the utility model is realized as follows: a kind of spring Anti-removing nuts, it is screwed on including being used as with screw rod Nut, the rear portion in nut precession direction are provided with an annular groove；Also there is tapered auger compressed spring, the spring The hand of spiral is identical as the hand of spiral of nut, and the big end rear portion of the spring is connected in the annular groove of nut, the spring Above equal diameter part of the circle of small end at least 1 half, and the equal diameter part of the spring can form spiral with screw rod and connect pass System.

In the annular groove of the nut being made of bottom surface and forward and backward facade, the height of the preceding facade as retaining position Degree is identical as nut bottom of thread height, and the height of the rear facade as block position is lower than preceding facade.

The big end rear portion of the spring is fixed on the bottom surface of the annular groove of nut.

The tamper principle of spring Anti-removing nuts:

After spring Anti-removing nuts are contacted with matched screw rod, dextrorotation process, the promotion at the promotion position and spring of nut Location contacts, and the grip zones of push the spring small end is moved along screw flight.When nut opposite direction turn, grip zones is in spiral shell Stop movement on bar, is formed and grasped, and lead to the retaining position of spring and the retaining location contacts of nut, spring is pressed in screw rod Screw thread on, screw rod, spring, nut three are integrally formed, realize tamper.

Compared with prior art, the utility model has the characteristics that and advantage:

It is low manufacture cost, easy to promote and utilize 1. structure is simple

One of annular groove need to be only opened up on existing nut, then installs a tapered auger compressed spring (also referred to as loudspeaker additional Shape spring).

2. Anti-dismantling effect is good

In precession on bolt, the equal diameter part of spring and screw flight are formed and are grasped nut after installing taper spring additional Effect forms the relationship that is threadedly engaged, and after nut, that is, nut fastening, due to spring effect, prevention is reversely rotated, and plays Anti-dismantling Effect.

This spring Anti-removing nuts integrate fastening, locking, tamper, do not damage screw flight during tamper.It can To be widely used in permanent sections bracing with connective positional, meet the need of life, production.

Detailed description of the invention

Fig. 1 is the utility model nut (i.e. nut, contain spring) and screw rod is screwed on schematic diagram.

Fig. 2 is the main view of nut shown in Fig. 1.

Fig. 3 is the A-A cross-sectional view of Fig. 2.

Fig. 4 is the main view of spring shown in Fig. 1.

Fig. 5 is the right view of Fig. 4.

Fig. 6 is that nut shown in Fig. 2 installs the main view after spring additional.

Fig. 7 is the B-B cross-sectional view of Fig. 6.

Specific embodiment

Fig. 2, Fig. 3 are shown, a kind of spring Anti-removing nuts, and including being used as the nut being screwed on screw rod 1, the nut 2 revolves An annular groove 2b is provided with into the rear portion in direction；Also have tapered auger compressed spring 3, the hand of spiral of the spring 3 with The direction screw thread 2a of nut 2 is identical, and the big end rear portion of the spring 3 is connected in the annular groove 2b of nut 2, the spring 3 it is small Above equal diameter part of at least 1 circle of end half, and the equal diameter part of the spring 3 can form spiral with screw rod 1 and connect pass It is (referring to Fig. 1, Fig. 4, Fig. 5).Spring small end 1.5 encloses above can cover on screw flight and precession.

In the annular groove 2b of nut 2 being made of bottom surface and forward and backward facade, the height of the preceding facade as retaining position 2c Degree is identical as nut bottom of thread height, and the height of the rear facade as block position 2d is lower than preceding facade.Nut rear annular The rear facade of groove is lower, to facilitate loading spring.

The big end rear portion of spring 3 is fixed on the bottom surface of annular groove 2b of nut 2.In Fig. 1, nut is rotation from right to left Into direction.

Spring Anti-removing nuts are made of nut and spring

1, referring to fig. 2, Fig. 3, nut 2 is made of irony or steel material, and appearance is six square nuts, and there is annular groove in inside 2b is divided into: screw thread position 2a, retaining position 2c, pushing four positions such as position and block position 2d.

Screw thread position --- the fastening of sections bracing with connective positional can be realized reliably with the thread binding on screw rod.

Retaining position --- the turn of nut opposite direction is prevented, tamper is played the role of.

Position --- during nut dextrorotation, push the spring moves on screw rod along the moving direction of nut for promotion.

Block position --- ensure the spring inside nut, cannot be come out out of nut easily.

2, referring to fig. 4, Fig. 5, spring 3 is made of steel material, whole in horn-like, the outside of small end by polishing plus Work is divided into: grip zones 3a(i.e. small end equal diameter part), retaining position 3b, push three positions such as position.

Grip zones --- spring inside diameter is slightly less than the bottom diameter of screw flight, and spring is only capable of dextrorotation on screw rod.

Retaining position --- the retaining location contacts with nut play the role of tamper.

Position --- the promotion location contacts with nut are pushed, motive force is transmitted to spring, is moved up using spring in screw rod It is dynamic.

The application of nut

By nut threaded end and screw flight end in contact, threadingly turn, until sections bracing with connective positional fastens.

Claims

1. a kind of spring Anti-removing nuts, including, it is used as the nut being screwed on screw rod (1), which is characterized in that the nut (2) The rear portion in precession direction is provided with an annular groove (2b)；Also there are tapered auger compressed spring (3), the spiral shell of the spring (3) Rotation direction is identical as the hand of spiral of nut (2), and the big end rear portion of the spring (3) is connected to the annular groove (2b) of nut (2) It is interior, above equal diameter part of the circle of small end at least 1 half of the spring (3), and the equal diameter part of the spring (3) can be with spiral shell Bar (1) forms spiral connection relationship.

2. a kind of spring Anti-removing nuts according to claim 1, which is characterized in that the nut (2) by bottom surface and In the annular groove (2b) of forward and backward facade composition, the height and the nut bottom of thread of the preceding facade as retaining position (2c) are high Spend identical, the height of the rear facade as block position (2d) is lower than preceding facade.

3. a kind of spring Anti-removing nuts according to claim 1 or 2, which is characterized in that after the big end of the spring (3) Portion is fixed on the bottom surface of annular groove (2b) of nut (2).