CN1078320C

CN1078320C - Anti-loosening nuts with smooth threading and direct indication of axial force

Info

Publication number: CN1078320C
Application number: CN98117996A
Authority: CN
Inventors: 林仲义
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-15
Filing date: 1998-09-15
Publication date: 2002-01-23
Anticipated expiration: 2018-09-15
Also published as: CN1247946A

Abstract

The anti-loose nut capable of being screwed in smoothly and directly indicating axial force comprises a cap body and a sleeve body, wherein the cap body is an outer oblique cone wall flat cone seat which extends from one side edge of a base and has proper axial height and proper inclination on the outer end surface, the top end of the flat cone seat is provided with an annular reverse folding wall, and the cap body is provided with the base, the flat cone seat and a shaft hole with internal threads; the sleeve body is provided with an inner taper groove with the axial height smaller than that of the flat cone seat, the inclination of the periphery of the inner taper groove is matched with that of the outer inclined taper wall, the other end of the sleeve body is provided with an opening-shaped wall-supporting groove, the flat cone seat of the cap body penetrates through the inner taper groove of the sleeve body, and a clearance is reserved between the cap body and the sleeve body, so that the joint operation of the nut and the bolt is smooth and can prevent looseness.

Description

Can smooth and easy spiral shell advance and have a directly jam nut of indication of a power

The present invention relates to a kind ofly can smooth and easy spiral shell advance and have a directly jam nut of indication of a power, relate in particular to a kind of lock non-loaded resistance when advancing to screw in bolt, with be connected workpiece when locking, automatically produce when preventing the impedance torque that gets loose and locking and can change by cap body, body allowance gap between the two, the simple and easy nut that whether reaches the required axle power of locking condition that detects is a kind of invention with industrial utilization.

Fastening clip with nut and bolt phase composition is the important binding member of assembling for object, its applied scope is very extensive, greatly to building reinforcing bar structure, and little apparatus to family, especially the combination of the combination of workpiece or board, indispensable especially critical elements.General nut is with after bolt (or screw) combines, through a long-term external force effect or the influence of other external factors, can produce loosening or obscission, for improving this situation, usually all can between nut and workpiece, add a packing ring, this method is for dismounting or the lightweight quiescent operation of still having an opportunity after assembling, it is an excellent method, right if for dynamic processing machine, then still can cause it to get loose because of the vibrations that long-term processing is produced, for workpiece, then comparatively inapplicable through promptly permanent no longer dismounting of locking or the permanent location of palpus.For this reason, the practitioner adds nylon material on the internal thread of nut, can be locked fully after making itself and bolt sealed and lock, if but this mode is applied in the working machine that can produce high temperature or be used for acidity, alkaline chemical processing, fusing point that promptly may Yin Nilong itself is lower and melted, or by acid and alkali corrosion, causes its loss of function, so, still can't effectively improve this shortcoming.

The inventor is thoughts on utilizing packing ring or all can not reaching preferable application target of popularity and anti-loosing effect at the nylon material that nut is set up locking purposes, more because nut be applied to need stress when fastening fast, convenient, safety and even effect such as reduce cost, and commonly use the nut fastener in terminal operation, can't satisfy these targets simultaneously in fact, further, at the locking sessions, wish to get and know whether nut has reached the axle power state that gets loose of preventing, the mode of commonly using needs the instrument by high duty, detect as axle power meter, not only increase operation inconvenience and increase cost; Again, commonly use and have the nut fastener that presets the torque anti-loosing effect, all in assembly process, produce molten sticking or stuck phenomenon because of high thermal friction, and operation is complicated inconvenient, can't assemble fast, and economic benefit is low, can not predict and whether lock, can not satisfy and use the requirement of going up multi-functional target.For this reason, the inventor through constantly research, develops the present invention at commonly using the product shortcoming finally.

Main purpose of the present invention is to provide a kind of and can smooth and easy spiral shell advances and have a directly jam nut of indication of a power, non-loaded resistance in the time of can making nut lock into bolt, with be connected workpiece when locking automatically generation prevent the resistance torque that gets loose, during locking, can whether reach the required axle power of locking by the simple and easy nut of learning of the variation in cap body, body allowance gap between the two.

Another main purpose of the present invention is to provide a kind of can smooth and easy spiral shell to be advanced and has the directly jam nut of indication of a power, can make nut when connecting operation, effects such as that the performance lock advances is smooth and easy, convenient, safety and cost reduction.

The objective of the invention is to realize by following technological scheme.

The present invention can smooth and easy spiral shell advances and has a directly jam nut of indication of a power, it is to be made of cap body and body, the cap body is to extend one at a side of pedestal to have suitable axial height and have the flat conic base of the outer conic wall of suitable gradient in the exterior edge face, this flat conic base is provided with on the top has suitable thickness and height, and be the reflexed wall of ring circle shape, aforementioned cap body is provided with the axis hole that runs through pedestal, flat conic base and have internal thread; Described body, it is to be provided with the inner conic hole of axial height less than aforementioned flat conic base at body, the gradient of the interior oblique cone wall of inner conic hole periphery is the gradient that cooperates outer conic wall, extend a ring circumferential surface that parallels to the axis with straight hole in the middle of forming by interior oblique cone wall top, ring circumferential surface apical margin extends a radial oblique cone wall again, make body end formation opening end against groove in addition, with the stretch through inner conic hole of body of cap body flat conic base, make the reflexed wall on flat conic base top stretch out the middle straight hole of body outward, again with the reflexed wall of aforementioned ring circle shape punch riveting and can support the oblique cone wall that supports the wall groove that ends at body outward, cap body and body are combined and the separation that can not come off, and be formed with an allowance gap between cap body and body.

Concrete structure of the present invention is provided in detail by following examples and accompanying drawing thereof.

Fig. 1 for cap body of the present invention and body not in conjunction with the time the STRUCTURE DECOMPOSITION schematic representation

Fig. 2 for cap body of the present invention and body come in conjunction with the time the structure cross-sectional schematic

Fig. 3 for cap body of the present invention and body in conjunction with but the structure section schematic representation during punch riveting not

Fig. 4 is invention cap body and body combination and the structure section schematic representation when punch riveting

Structure section when Fig. 5 reaches locking for invention combined type nut in engaging operation

Schematic representation

Fig. 6 is the structure enlarged diagram of circle part shown in Figure 5

Fig. 7 reaches the structure section of locking condition in engaging operation for combined type nut of the present invention

Schematic representation

Fig. 8 is the structure enlarged diagram of circle part shown in Figure 7

Consult illustrated in figures 1 and 2, nut of the present invention is to be made of cap body 1 and body 2, cap body 1 is to extend one at a side of pedestal 11 to have suitable axial height and have the flat conic base 12 of the outer conic wall 13 of suitable gradient in the exterior edge face, this flat conic base 12 is provided with on the top has suitable thickness and height, and is the reflexed wall 14 of ring circle shape.Aforementioned cap body 1 is provided with the axis hole 15 that runs through pedestal 11, flat conic base 12 and have internal thread 16; Described body 2 is to be provided with the inner conic hole 21 of axial height less than aforementioned flat conic base 12 at body, and the gradient of the interior oblique cone wall 22 of inner conic hole 21 peripheries is the gradients that cooperate outer conic wall 13, extend a parallel ring circumferential surface 24 at axis with straight hole 23 in the middle of forming by interior oblique cone wall 22 tops, ring circumferential surface 24 apical margins extend a radial oblique cone wall 25 again, make body 2 end formation opening end against groove 26 in addition.

Consult Fig. 3, shown in Figure 4, body 2 has inner conic hole 21, cap body 1 has flat conic base 12, with the stretch through inner conic hole 21 of body of cap body flat conic base 12, make the reflexed wall 14 outer middle straight holes 23 that stretch out body on flat conic base top, again with the reflexed wall 14 of aforementioned ring circle shape punch riveting and can support the oblique cone wall 25 that supports wall groove 26 that ends at body 2 outward, cap body 1 and body 2 are combined and can not come off separation.After cap body 1, body 2 combined, both can be that relativity is rotated and can be not stuck, and cap body 1 and 2 of bodies are formed with an allowance gap 3.

Consult Fig. 5, shown in Figure 6, when jam nut of the present invention is used for the operation of bolt knot joint, because of is connected with workpiece 4 lock before thing torque impedance still, when so cap body 1 screws in bolt 5, can advance by smooth and easy spiral shell, when treating that body 2 conflicts and workpiece 4 surfaces and body 2 can not rotate along with 1 precession of cap body, cap body 1 begins to be secured to the most suitable tightness, in cap body 1 locking process, because flat conic base 12 is limited by the interior oblique cone wall 22 of body 2 and the compressing of middle straight hole 23, can force flat conic base 12 tip portion to produce distortion, and then make the internal threads 16 in the flat conic base top axis hole 15 be compressed distortion, and with the tight interlock of thread groove of bolt 5, be difficult for getting loose up to producing torque with workpiece 4, reach anti-loosing effect, consult Fig. 7, shown in Figure 8.

Consult Fig. 5, shown in Figure 7, in the locking process, the two allowance gap 3 of cap body 1 and body 2 becomes the b distance gradually by a distance, b＜a, also being allowance gap 3 shortens gradually because of the locking operation, and the operator can utilize visual means directly to be controlled by the demonstration in allowance gap 3 and reach optimal degree of blocking and locking required axle power.

In sum, the present invention is applied to the bolt knot and engages in the operation, can not only freely advance to screw togather, can produce automatically after the locking and preset torque and the impedance that prevents that pine from moving back is arranged, in the locking operation, whether the operator can go out the required axle power of locking state with visual or light instrument such as feeler gage interpretation and reach, and is a kind of invention with suitable industrial utilization in fact, and it has novelty, creativeness and practicability.

Claims

1. An anti-loosening nut that can be screwed smoothly and has a direct indication of axial force. It is characterized in that it is composed of a cap body and a sleeve body. The cap body extends on one side of the base and has an appropriate axial force. Height and a flat cone seat with an outer inclined cone wall with an appropriate slope on the outer end surface. The flat cone seat is provided with a circular anti-folding wall with an appropriate thickness and height at the top. The aforementioned cap is provided with a penetrating base , a flat cone seat and a shaft hole with internal threads; the sleeve body is provided with an inner cone groove with an axial height smaller than the aforementioned flat cone seat on the body, and the inclination of the inner inclined cone wall around the inner cone groove is matched. The slope of the outer oblique cone wall extends from the top of the inner oblique cone wall to a circular surface parallel to the axis to form a middle straight hole, and the top edge of the circular surface extends a radial oblique cone wall to form an opening at the other end of the sleeve Put the flat cone seat of the cap body through the inner cone groove of the stretch sleeve body, so that the reverse folding wall at the top of the flat cone seat protrudes from the middle straight hole of the sleeve body, and then press the aforementioned circular reverse folding wall outward. Riveting can resist the inclined cone wall of the abutment groove of the sleeve body, so that the cap body and the sleeve body can be combined without falling off and separated, and a margin gap is formed between the cap body and the sleeve body.