CN209523980U - A kind of screw component with anti-loose structure - Google Patents

Abstract

The utility model discloses a kind of screw component with anti-loose structure, including screw and matched pre-load nut, the screw rod of the screw is irregular cylindrical type, the screw rod is engaged with pre-load nut, and anti-withdrawing nut is movably equipped on the screw rod and on the outside of nut, the anti-withdrawing nut is clamped by the silk tooth on clamping structure and screw rod, and the anti-withdrawing nut inner ring is equipped with and with the matched structure of irregular cylindrical type rotate anti-withdrawing nut can not, the utility model is by being arranged anti-withdrawing nut for preventing preload screw to be displaced outwardly, realize anti-loosing effect, its clever structure, production and processing is simple, it is simple and easy using operating process, it is suitble to industrial application and popularization.

Description

A kind of screw component with anti-loose structure

Technical field

The utility model relates to technical field of fastening, specially a kind of screw component with anti-loose structure.

Background technique

Screw is the structure for keeping the one kind fastened between components common, it may be said that screw goes out for connecting components Now greatly convenient for people's lives and industrial development, and screw is according to for different and there are many kinds of classes, such as self tapping spiral shell Silk, setscrew etc..Its application range is very wide, electronic product, digital product, the accurate spiral shell that power equipment is used above Silk, engineering, building, bridge then use large-scale screw.Since equipment can shake on some engineerings, machinery field, thus Lead to loosened screw, cause fastening loosely, loosened screws in order to prevent many at present and the improved technical solution done utilize increasing Cushioning circle, the anti-silk of setting etc., but its application effect is more general, proposes a kind of screw group with anti-loose structure thus Part.

Utility model content

The purpose of this utility model is to provide a kind of screw component with anti-loose structure, to solve above-mentioned background The problem of being proposed in technology.

To achieve the above object, the utility model provides the following technical solutions: a kind of screw with anti-loose structure Component, including screw and matched pre-load nut, it is characterised in that: the screw rod of the screw is irregular cylinder Type, the screw rod are engaged with pre-load nut, and anti-withdrawing nut is movably equipped on the screw rod and on the outside of nut, described anti- Withdrawing nut is clamped by the silk tooth on clamping structure and screw rod, and the anti-withdrawing nut inner ring is equipped with and irregular cylindrical type The structure matched rotate anti-withdrawing nut can not.

Preferably, the clamping structure includes the fastener slot being equipped in anti-withdrawing nut, is movably equipped with wedge in the fastener slot The teeth of shape, and the lower end of the teeth is run through the inner ring of anti-withdrawing nut and is clamped with the screw thread on screw rod.

Preferably, the teeth are equipped with snap-gauge, and the first spring is connected between the snap-gauge and the side wall of fastener slot.

Preferably, the snap-gauge is equipped with pull rod, and the pull rod extends to outside through the first spring and fastener slot.

Preferably, the groove through entire screw rod surface is provided on the screw, and the inner ring of the anti-withdrawing nut is fixed It is connected with convex block.

Preferably, the screw rod radial surface is equipped with plane, and the inner ring of the anti-withdrawing nut is fixedly connected with and plane The limited block to match.

Preferably, it is provided with undercut in the limited block, the limiting tooth of wedge shape is connected in the undercut, and the plane is set There are multiple limiting slots to match with limiting tooth, the top of the limiting tooth is connect by second spring with undercut roof, and institute The top for stating limiting tooth is also fixed with pull rod.

Preferably, pre-load nut side border is equipped with multiple card slots, and the anti-withdrawing nut is opposite with pre-load nut Side be equipped with multiple bayonet locks with pocket matches.

Compared with prior art, the utility model has the beneficial effects that the screw of the utility model and making for pre-load nut It is identical as routine with method, cause loosening to be moved out due to vibration etc. for preventing from pre-tightening screw by the way that anti-withdrawing nut is arranged Dynamic, to influence pretightning force, anti-withdrawing nut is equipped with the teeth for the wedge shape being mutually clamped with silk tooth, to keep anti-withdrawing nut past In push away and can not move outward, and cooperation be equipped with rotate anti-withdrawing nut can not on screw rod structure, make Anti-backing screw without Method is mobile, to realize the locking effect for pre-tightening and consolidating.

Detailed description of the invention

Fig. 1 is the reeded structural schematic diagram of the utility model band；

Fig. 2 is the structural schematic diagram that the utility model has plane；

Fig. 3 is the reeded explosive view of the utility model band；

Fig. 4 is the explosive view that the utility model has plane；

Fig. 5 is the anti-back nut interior structural schematic diagram of the utility model；

Fig. 6 is structural schematic diagram of the utility model with limiting slot；

Fig. 7 is the structural schematic diagram of the teeth of the utility model；

Fig. 8 is the explosive view of the limiting slot of the utility model；

Fig. 9 is the explosive view that the utility model has bayonet lock.

In figure: 1, screw, 101, screw rod, 2, pre-load nut, 3, anti-withdrawing nut, 4, fastener slot, 5, teeth, 6, snap-gauge, 7, First spring, 8, pull rod, 9, groove, 10, convex block, 11, plane, 12, limited block, 13, undercut, 14, limiting tooth, 15, limiting slot, 16, card slot, 17, bayonet lock, 18, second spring.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-9 is please referred to,

Embodiment 1, the utility model provide a kind of technical solution: a kind of screw component with anti-loose structure, packet Screw 1 and matched pre-load nut 2 are included, screw 1 is identical with conventional fastener with the usage of pre-load nut 2 not to have area Not, the screw rod 101 of the screw 1 is irregular cylindrical type, convenient to be clamped with anti-withdrawing nut 3, the screw rod 101 and preload spiral shell Female 2 engagement pre-tightens fastening to realize, and it is (anti-to be movably equipped with anti-withdrawing nut 3 on the screw rod 101 and positioned at the outside of nut 2 3 inner ring of withdrawing nut does not have silk tooth), the anti-withdrawing nut 3 is clamped by the silk tooth on clamping structure and screw rod 101, and described anti- 3 inner ring of withdrawing nut, which is equipped with, rotate anti-withdrawing nut 3 can not with the matched structure of irregular cylindrical type, specifically, the clamping Structure includes the fastener slot 4 being equipped in anti-withdrawing nut 3, and the teeth 5 of wedge shape, and the teeth 5 are movably equipped in the fastener slot 4 Lower end through anti-withdrawing nut 3 inner ring and on screw rod 101 screw thread be clamped, teeth 5 as shown in Figure 7 be wedge shape inwardly push away It can enter with inclined-plane in fastener slot 4 when dynamic, but reversely cannot then move.

Specifically, the teeth 5 are equipped with snap-gauge 6, and first is connected between the snap-gauge 6 and the side wall of fastener slot 4 Spring 7, to guarantee the silk tooth clamping on screw rod 101 that teeth 5 can fasten, the snap-gauge 6 is equipped with pull rod 8, the pull rod 8 Outside is extended to fastener slot 4 through the first spring 7, pull rod 8 is pulled out in the utility model to be dismantled, and have It rotates, is provided on the screw 1 through the recessed of entire 101 surface of screw rod between the screw rod in order to prevent 101 and anti-withdrawing nut 3 of body Slot 9, and the inner ring of the anti-withdrawing nut 3 is fixedly connected with convex block 10.

Embodiment 2, the surface of screw rod 101 is directly reamed one layer completely and is formed not by this scheme unlike the first embodiment The cylinder of rule, i.e., as shown in Fig. 2, 101 radial surface of the screw rod is equipped with plane 11, and the inner ring of the anti-withdrawing nut 3 is solid Surely it is connected with the limited block 12 to match with plane 11.

Embodiment 3, anti-withdrawing nut 3 is displaced outwardly in order to prevent on the basis of embodiment 2, is provided in the limited block 12 Undercut 13, is connected with the limiting tooth 14 of wedge shape in the undercut 13, and the plane 11 is equipped with and multiple matches with limiting tooth 14 Limiting slot 15, effect and teeth 5 are similar with the snap effect of screw rod 101, and can only be into cannot move back to making locking effect Fruit is more stable, and the top of the limiting tooth 14 is connect by second spring 18 with 13 roof of undercut, and the limiting tooth 14 top is also fixed with pull rod 8, thus easy to disassemble.

In addition for embodiment 1-3, the 2 side border of pre-load nut is equipped with multiple card slots 16, and the anti-back The side opposite with pre-load nut 2 of nut 3, which is equipped with, can be used elastic rubber material with the matched multiple bayonet locks 17 of card slot 16, bayonet lock 17 Matter facilitates deformation to be pressed into the anti-loosing effect for further improving the utility model in card slot 16.

Working principle: it in use, screw 1 is passed through the object to be fastened, then screws on pre-load nut 2 and reaches needs Position, be then slidably installed anti-withdrawing nut 3, and anti-withdrawing nut 3 is made to be close to that pull rod 8 can be lifted when needing to dismantle, so close to nut 2 After remove anti-withdrawing nut 3.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (8)

1. a kind of screw component with anti-loose structure, including screw (1) and matched pre-load nut (2), Be characterized in that: the screw rod (101) of the screw (1) is irregular cylindrical type, and the screw rod (101) is nibbled with pre-load nut (2) It closes, and is movably equipped with anti-withdrawing nut (3) on the screw rod (101) and on the outside of nut (2), the anti-withdrawing nut (3) is logical The silk tooth crossed on clamping structure and screw rod (101) is clamped, and anti-withdrawing nut (3) inner ring is equipped with and irregular cylindrical type The structure matched rotate anti-withdrawing nut (3) can not.

2. a kind of screw component with anti-loose structure according to claim 1, it is characterised in that: the clamping knot Structure includes the fastener slot (4) being equipped in anti-withdrawing nut (3), and the teeth (5) of wedge shape, and institute are movably equipped in the fastener slot (4) The lower end for stating teeth (5) is run through the inner ring of anti-withdrawing nut (3) and is clamped with the screw thread on screw rod (101).

3. a kind of screw component with anti-loose structure according to claim 2, it is characterised in that: the teeth (5) snap-gauge (6) are equipped with, and are connected with the first spring (7) between the snap-gauge (6) and the side wall of fastener slot (4).

4. a kind of screw component with anti-loose structure according to claim 3, it is characterised in that: the snap-gauge (6) pull rod (8) are equipped with, the pull rod (8) extends to outside through the first spring (7) and fastener slot (4).

5. a kind of screw component with anti-loose structure according to claim 1, it is characterised in that: the screw (1) groove (9) through entire screw rod (101) surface is provided on, and the inner ring of the anti-withdrawing nut (3) is fixedly connected with convex block (10)。

6. a kind of screw component with anti-loose structure according to claim 1, it is characterised in that: the screw rod (101) radial surface is equipped with plane (11), and the inner ring of the anti-withdrawing nut (3) is fixedly connected with and matches with plane (11) Limited block (12).

7. a kind of screw component with anti-loose structure according to claim 6, it is characterised in that: the limited block (12) it is provided with undercut (13) in, the limiting tooth (14) of wedge shape is connected in the undercut (13), and the plane (11) is equipped with more The top of a limiting slot (15) to match with limiting tooth (14), the limiting tooth (14) passes through second spring (18) and undercut (13) roof connects, and the top of the limiting tooth (14) is also fixed with pull rod (8).

8. a kind of screw component with anti-loose structure according to claim 5 or 6, it is characterised in that: described pre- Tight nut (2) side border is equipped with multiple card slots (16), and the anti-withdrawing nut (3) side opposite with pre-load nut (2) is set Have and card slot (16) matched multiple bayonet locks (17).