CN2804459Y

CN2804459Y - Reverse proof floating screw

Info

Publication number: CN2804459Y
Application number: CN 200420112724
Authority: CN
Inventors: 郑明贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-11
Filing date: 2004-11-11
Publication date: 2006-08-09
Anticipated expiration: 2014-11-11

Abstract

The utility model discloses a floating screw, which can preventing reverse rotation. The utility model comprises a rotating barrel, a screw, a spring and a floating barrel, wherein the screw penetrates in the rotating barrel. In addition, the screw is sheathed on the floating barrel which is sheathed in the rotating barrel and the spring is arranged on the screw which is arranged between the rotating barrel and the floating barrel. The utility model also comprises a stop ring which is arranged in the rotating barrel and a reverse toothed ring which is arranged on the screw, wherein the stop ring is sheathed on the reverse toothed ring. In addition, the reverse toothed ring and the stop ring are close and connected in a rotation direction and are not close and connected in an opposite rotation direction. Consequently, the screw can not retract in the reverse direction and in the reverse rotation mode. Then, the phenomenon that the floating screw is arbitrarily dismounted can be avoided and the occurrence of the condition that the floating screw is directly dismounted without any tool can also be avoided.

Description

The anti-floating screw that reverses

Technical field

The utility model relates to a kind of floating screw of anti-reverse, particularly relates to a kind of anti-loose floating screw with anti-reversing structure.

Background technique

General two mechanical components are made pattern in conjunction with assembling and are divided into removable and two kinds of permanent fixation formulas, and permanent fixation formula wherein is welding (welding), riveted joint (rivet) etc., and removable then is buckle, screw (screw) etc.

With the fixing structure of screw, if use, or even do not have the place of any vibrations in the occasion of hanging down vibration frequency, then directly fixing with general screw.Otherwise, if occasion at high vibration frequency, be the situation of avoiding causing screw to come off because of vibrations, suit elastic washer (washer) on screw or bolt then, as basin type packing ring, spring washer or wave washer etc., and the elastic force that can pass through elastic washer produces situation about getting loose to increase the positive pressure of screw to avoid screw in the environment of vibrations.

And this screw and packing ring are two members independently, when assembling again with gasket sleeve below screw terminal, and then be screwed in the tapped hole of parts.But there is no any combination or the structure of cooperation between general packing ring and the screw, only directly be sleeved on packing ring on the screw, and the external diameter of the center bore of this packing ring and screw is widely different, and this packing ring comes off on screw easily when assembling, therefore causes the puzzlement in the assembling.

Have again, the screw terminal of conventional screw (screw head) is the structure of a convex, which is provided with a word or criss-cross groove, when assembling, must do assembling and dismounting, therefore comparatively trouble inconvenience in the operation of assembling by hand tools such as screwdriver (screwdriver).As use occasion at switchboard, must be with screwdriver assembling or dismounting screw, circuit board or electric appliance component can be assembled on the switchboard, so in the action of assembling, must do assembling and dismounting, then trouble inconvenience for the maintenance man by hand tools.Especially in the place that must dismantle maintenance often, after screw is pulled down, cover packing ring thereon also comes off easily, in case screw separates with packing ring, for the maintenance man, can cause many inconvenience, must prepare the standby packing ring of size up to specification in advance as easy loss of packing ring, so increase preparatory work in advance.The maintenance man wears gloves usually and carries out operation again, across the thick gloves and the suit packing ring of being inconvenient to take, and the maintenance man is caused puzzlement, so " ending " of being inconvenient to keep in repair work.

For electrical equipment or the facility that must inspect maintenance often, the suit packing ring comparatively bothers inconvenience on screw, therefore develop and to have that against shock comes off and must exempt the floating screw 10 that uses screwdriver, as shown in Figure 1, in a rotating cylinder 11, place a screw 12, and this screw 12 is combined into one with rotating cylinder 11, and on this screw 12, is set with a floating drum 13, and this floating drum 13 is sleeved in this rotating cylinder 11, and device has a spring 14 between this rotating cylinder 11 and floating drum 13 again.Be able to fingerhold floating screw 10, it be plugged on the parts (not expression in graphic) of combination, and,, therefore screw 12 directly must be screwed in parts because this screw 12 is to be combined into one with rotating cylinder 11 to point this rotating cylinder 11 of direct rotation.After this screw 12 is screwed into parts, this floating drum 13 on the surface of parts, so can pass through the elastic force of spring 14 ejection floating drums 13, to increase the positive pressure of screw 12 by spring 14 ejections, so can avoid floating screw 10 to get loose, and can exempt inconvenience with the hand tools assembling screw.

If will increase the tightness that screw 12 is screwed into parts, then can lean against head end 121 rotations on screw 12 tops again by hand tools, to strengthen the conjugation of screw 12 and parts.Otherwise, if will pull down floating screw 10 time, directly with finger rotate on it rotating cylinder 11 or with hand tools rotation screw 12, floating screw 10 can be pulled down.

But in some specific assembling occasion, this floating screw 10 also can not be rotated arbitrarily to be pulled down.And the rotating cylinder 11 of known floating screw 10 is to be combined into one with screw 12, and therefore no matter directly rotate this rotating cylinder 11 with hand, or with hand tools rotation screw 12, this floating screw 10 all can be rotated and pull down, and does not have any protective action.

Though known floating screw 10 has the convenience of exempting to use the hand tools assembling, and the advantage of exempting from the suit packing ring,, must avoid not using under the situation of any instrument and directly be dismantled, and become screw manufacturing industry problem to be solved in some specific use occasion.

The model utility content

Technical problem to be solved in the utility model provides a kind of floating screw of anti-reverse, solves the technical problem that existing floating screw can not prevent reversing no any protective action.

For achieving the above object, the utility model provides a kind of floating screw of anti-reverse, comprising: a rotating cylinder, a screw, spring, floating drum, this screw are set in the rotating cylinder and are sleeved on the floating drum, this floating drum is sleeved in this rotating cylinder, and this spring is arranged on the screw between this rotating cylinder and this floating drum; Its characteristics are, also comprise: one is arranged on the stop ring in the rotating cylinder; One is arranged on the contrary ring gear on this screw; This stop ring is enclosed within on this contrary ring gear, and this contrary ring gear and this stop ring are on a sense of rotation and lean on the connection shape and be non-lean on into shape on another opposite sense of rotation.

The floating screw of above-mentioned anti-reverse, its characteristics are that this contrary ring gear is integrally formed on this screw.

The floating screw of above-mentioned anti-reverse, its characteristics are that this contrary ring gear is that independent member and assembling are fixed on this screw.

The floating screw of above-mentioned anti-reverse, its characteristics be, this stop ring also comprises a plurality of shell fragments that are formed in this stop ring, and should contrary ring gear be one to be equipped with the ring body of a plurality of draw-in grooves.

The floating screw of above-mentioned anti-reverse, its characteristics are that this shell fragment forward rotates and leans on into this draw-in groove, and this draw-in groove is withdrawed from this shell fragment counter-rotating.

The floating screw of above-mentioned anti-reverse, its characteristics are that this draw-in groove is the V-arrangement teeth groove, and this shell fragment is kink shape, and a side of described V-arrangement teeth groove contacts with the top of described shell fragment, and the another side of described V-shaped groove contacts with the parallel sided of described shell fragment.

The floating screw of above-mentioned anti-reverse, its characteristics are that the bending angle of described shell fragment is the obtuse angle.

The floating screw of above-mentioned anti-reverse, its characteristics are that described shell fragment is 3, are evenly arranged on the circumference of this stop ring.

Technique effect of the present utility model is:

The rotating cylinder internal fixation of floating screw of the present utility model has a stop ring, and screw is provided with a contrary ring gear, by rotating this rotating cylinder this stop ring is leaned on into contrary ring gear with push-jump screw forward, and this rotating cylinder stop ring in it that reverses does not lean on into contrary ring gear, and this screw can't be withdrawed from reverse counter-rotating.

The stop ring of floating screw of the present utility model also comprises a plurality of shapings shell fragment within it, and should contrary ring gear be one to be equipped with the ring body of a plurality of draw-in grooves, the shell fragment of this stop ring is leaned on when forward rotating into the draw-in groove against ring gear, rotated this rotating cylinder and point, to change this floating screw over to parts.Otherwise if this rotating cylinder of counter-rotating, then the shell fragment of this stop ring withdraws from draw-in groove, and can't push-jump screw, makes this rotating cylinder be idle running when reversing, and so can avoid avoiding being dismantled arbitrarily under the state of tool using not.

If will dismantle floating screw of the present utility model, then need tool by hand to lean against on the head end of screw and rotate, this floating screw can be pulled down.Therefore, can't be under the situation of no hand tools directly with manual teardown, and must so can avoid being disassembled arbitrarily in addition with the hand tools dismounting.

In a word, the floating screw that the utility model provides has the anti-function that reverses, and can forward change over to by finger, and with the reverse back-out of hand-operated tools, can also strengthen locking by hand tools.

Further describe specific embodiment of the utility model below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the sectional view of known floating screw;

Fig. 2 is the sectional view of the anti-floating screw that reverses of the utility model;

Fig. 3 is the perspective exploded view of the anti-floating screw that reverses of the utility model;

Fig. 4 is the sectional view of A-A direction among Fig. 2; And

Fig. 5 is the contrary ring gear of the anti-floating screw that reverses of the utility model and another combination of screw embodiment's schematic representation;

Fig. 6 is the partial view of Fig. 4.

Wherein, description of reference numerals is as follows:

10,20 floating screws

11,21 rotating cylinders

12,22 screws

121,221 head ends

13,23 floating drums

14,24 springs

25 stop rings

251 shell fragments

26 contrary ring gears

261 draw-in grooves

2510 bending angles

2610,2611 draw-in groove bi-side

Embodiment

Below embodiment further describe viewpoint of the present utility model, but be not in order to limit practical range of the present utility model.

See also Fig. 2 and Fig. 3, the anti-floating screw 20 that reverses of the utility model is to place a screw 22 in a rotating cylinder 21, and on this screw 22 suit one floating drum 23, and this floating drum 23 is sleeved in this rotating cylinder 21, and device has a spring 24 between this rotating cylinder 21 and floating drum 23 again.Its characteristics are: these rotating cylinder 21 internal fixation have a stop ring 25, this stop ring 25 is integrated with rotating cylinder 21, and this stop ring 25 inwardly are formed with a plurality of shell fragments 251.This screw 22 is provided with a contrary ring gear 26 in addition, makes this contrary ring gear 26 and screw 22 integrators, is equipped with a plurality of draw-in grooves 261 on this contrary ring gear 26, as shown in Figure 4.

Under normal condition, the shell fragment 251 of this stop ring 25 leans on the draw-in groove 261 into contrary ring gear 26, so can directly clamp rotating cylinder 21 with two fingers and rotate, and makes this stop ring 25 be able to forward push-jump screw 22.Otherwise if during this rotating cylinder 21 of reverse rotation, the shell fragment 251 of the stop ring 25 in this rotating cylinder 21 can't lean on the draw-in groove 261 into contrary ring gear 26, so promptly can't reverse rotation screw 22, and can avoid under the situation of no hand tools, dismantling arbitrarily floating screw 20.

Have again, directly change screw owing to need directly to rotate this rotating cylinder 21 over to drive screw 22, and can be convenient to hand on-line equipment floating screw 20.If the screw 22 of this floating screw 20 is locked on the parts, then need lean against on the head end 221 of screw 22 and rotate with the hand tools of screwdriver and so on, with screw 22 lockings on parts.Otherwise,, when dismounting, must floating screw 20 can be pulled down with hand tools rotation screw 22 equally if after being locked in floating screw 20 on the parts with hand tools.

In addition, when floating screw 20 changes parts (not expression in graphic) over to, this floating drum 23 is pressed against on the surface of parts by the ejection of spring 24, and change the screw of parts over to when dark more when screw 22, retraction in past more this rotating cylinder 21 of this floating drum 23, and can be pressed against the reaction force of surface of the work by floating drum 23, increasing the positive pressure of screw 22, thereby can avoid screw 22 to produce situation about getting loose.

First embodiment

Please heavily join Fig. 2, this contrary ring gear 26 is one of the forming on screw 22, the structure that makes this contrary ring gear 26 and screw 22 become one and be shaped, and exempting follow-up assembling, but and its mould-forming method powder metallurgy or ejection formation etc.

Second embodiment

See also Fig. 5, for contrary ring gear 26 of the present utility model and screw 22 another in conjunction with the embodiments, be in this contrary ring gear 26 and screw 22 different with last embodiment is to make moulding respectively, should be combined on the screw 22 against ring gear 26 suits again.And should be combined on the screw 22 in friction tight mode by contrary ring gear 26, or welding again behind fit, can reach binding all-in-one-piece purpose equally.

See also Fig. 6, be the partial view of Fig. 4, as shown in the figure, draw-in groove 261 is the V-arrangement teeth groove, and shell fragment 251 is kink shape, and its bending angle 2510 is the obtuse angle.One side 2610 of V-arrangement teeth groove contacts with the top of described shell fragment, and the another side 2611 of described V-shaped groove contacts with the parallel sided of described shell fragment.

And as shown in Figure 4, described shell fragment can be set to 3, is evenly arranged on the circumference of this stop ring.

The above is preferred embodiment of the present utility model only, is not to be used for limiting practical range of the present utility model; Claim of the present utility model should be as the criterion with the scope that claims of the present utility model were defined, and every equivalence of doing according to the utility model changes and revises, and is all contained by claim of the present utility model.

Claims

1, a kind of floating screw of anti-reverse comprises: a rotating cylinder, a screw, spring, floating drum, this screw are set in the rotating cylinder and are sleeved on the floating drum, and this floating drum is sleeved in this rotating cylinder, and this spring is arranged on the screw between this rotating cylinder and this floating drum; It is characterized in that, also comprise:

One is arranged on the stop ring in the rotating cylinder;

One is arranged on the contrary ring gear on this screw;

This stop ring is enclosed within on this contrary ring gear, and this contrary ring gear and this stop ring are on a sense of rotation and lean on the connection shape and be non-lean on into shape on another opposite sense of rotation.

2, the floating screw of anti-reverse according to claim 1 is characterized in that, this contrary ring gear is integrally formed on this screw.

3, the floating screw of anti-reverse according to claim 1 is characterized in that, this contrary ring gear is that independent member and assembling are fixed on this screw.

4, the floating screw of anti-reverse according to claim 1 is characterized in that, this stop ring also comprises a plurality of shell fragments that are formed in this stop ring, and should contrary ring gear is one to be equipped with the ring body of a plurality of draw-in grooves.

5, the floating screw of anti-reverse according to claim 4 is characterized in that, this shell fragment is connected with this draw-in groove incision.

6, according to the floating screw of claim 2,3 or 4 described anti-reverses, it is characterized in that this draw-in groove is the V-arrangement teeth groove, this shell fragment is kink shape, one side of described V-arrangement teeth groove contacts with the top of described shell fragment, and the another side of described V-shaped groove contacts with the parallel sided of described shell fragment.

7, the floating screw of anti-reverse according to claim 6 is characterized in that, the bending angle of described shell fragment is the obtuse angle.

8, the floating screw of anti-reverse according to claim 7 is characterized in that, described shell fragment is 3, is evenly arranged on the circumference of this stop ring.