CN210423359U

CN210423359U - Dustproof bolt

Info

Publication number: CN210423359U
Application number: CN201921395515.0U
Authority: CN
Inventors: 陈陆妹; 张伯卿
Original assignee: Zhejiang Liangtai Standard Co ltd
Current assignee: Zhejiang Liangtai Standard Co ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-04-28
Anticipated expiration: 2029-08-26

Abstract

The utility model relates to the technical field of fasteners, and discloses a dustproof bolt, which is characterized by comprising a nut and a screw rod which are fixedly connected, wherein the end surface of the nut, which is far away from the screw rod, is provided with a screw groove, the nut is rotatably connected with a rotating shaft, one side of the rotating shaft, which penetrates out of the nut, is connected with a stop block, the side wall of the stop block is provided with a positioning block, the nut is fixedly provided with a limiting block, the limiting block is provided with a limiting hole for the positioning block to penetrate out, and the positioning block is detachably connected with a fixing part for limiting the separation; when the positioning block penetrates out of the limiting hole, the stop block seals the opening of the screw groove. The utility model discloses the effect that can not the deposition and influence the bolt dismouting in the screw recess has.

Description

Dustproof bolt

Technical Field

The utility model relates to a technical field of fastener, more specifically say that it relates to a dustproof bolt.

Background

The bolt is a cylindrical threaded fastener matched with a nut, consists of a head part and a screw rod (a cylinder with external threads), and is used for fastening and connecting two parts with through holes.

At present, chinese patent with publication number CN206429509U discloses a stainless steel screw, which comprises a nut and a screw rod, wherein the nut is fixed at one end of the screw rod, and the nut is provided with a linear or cross-shaped screw slot. When the screwdriver is used, the screwdriver matched with the screwdriver groove extends into the screwdriver groove to drive the screw cap and the screw to rotate, and therefore the screw is dismounted.

However, the screw blade groove of the stainless steel screw is directly exposed to air, dust is easily accumulated in the screw blade groove, particularly the screw blade arranged on mechanical equipment, and engine oil on the equipment is mixed with the dust and is condensed into floccules which are difficult to clean when flowing into the screw blade groove, so that the screw blade groove is blocked. The screwdriver cannot extend into the screwdriver groove to screw the screw, so that the assembly and disassembly of the screw are influenced, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to the not enough of prior art existence, the utility model provides a dustproof bolt has the effect that the spiral shell inslot can not the deposition and influence the bolt dismouting.

In order to achieve the above purpose, the utility model provides a following technical scheme: a dustproof bolt comprises a nut and a screw rod which are fixedly connected, wherein a screw thread groove is formed in the end face, away from the screw rod, of the nut, a rotating shaft is connected to the nut in a rotating mode, a stop block is connected to one side, penetrating out of the nut, of the rotating shaft, a positioning block is arranged on the side wall of the stop block, a limiting block is fixed to the nut, a limiting hole for the positioning block to penetrate out of is formed in the limiting block, and a fixing piece for limiting the positioning block to be separated from the limiting hole is detachably; when the positioning block penetrates out of the limiting hole, the stop block seals the opening of the screw groove.

Through adopting above-mentioned technical scheme, when not using the spiral shell sword groove, people can rotate the dog to the one side that is close to the stopper for the locating piece is worn out spacing hole and is up to dog and stopper butt, and the dog can seal the opening in spiral shell sword groove this moment, avoids the dust to gather and blocks up it at the spiral shell sword inslot, can not influence twisting of bolt and dismouting. When the positioning block extends out of the limiting hole, the fixing piece is connected to the positioning block to limit the positioning block to move out of the limiting hole, and therefore stability of the stop block is improved.

The utility model discloses further set up to: the outer surface of the positioning block is provided with an annular fixing groove, and the fixing piece comprises an elastic ring sleeved in the fixing groove; when the elastic ring is tightly sleeved in the fixing groove, the end face of the elastic ring, far away from the fixing groove, exceeds the outer wall of the positioning block.

Through adopting above-mentioned technical scheme, after the locating piece wore out spacing hole, the fixed slot was located the stopper and keeps away from one side of dog, and people's accessible makes it take place to deform this moment by tensile elastic ring, establishes the elastic ring cover after will deforming in the fixed slot again. After the elastic ring is loosened, the elastic ring can restore to the original shape under the action of the elasticity of the elastic ring and is tightly sleeved in the fixing groove, so that the positioning block is limited to move out of the limiting hole.

The utility model discloses further set up to: the outer wall of the elastic ring is integrally formed with an installation block, and the middle of the installation block is provided with an installation hole.

By adopting the technical scheme, when the screw groove is used, people need to separate the elastic ring from the fixed groove at first, but the elastic ring is tightly sleeved in the fixed groove, so that hands cannot pull the screw groove directly. At the moment, people can stretch the thin rod with the diameter smaller than the inner diameter of the mounting hole into the mounting hole, and then the thin rod is lifted to drive the side wall, close to the mounting block, of the elastic ring to move towards one side far away from the fixing groove, so that a gap exists between the elastic ring and the positioning block, and people can pull the elastic ring by hand.

The utility model discloses further set up to: the end face of the limiting block close to the stop block is fixed with at least one clamping block, the end face of the stop block close to the limiting block is provided with clamping grooves which are equal in number and correspond to the clamping blocks in position, and the clamping blocks are in interference fit with the clamping grooves.

Through adopting above-mentioned technical scheme, when the locating piece stretched into spacing hole, with fixture block embedding draw-in groove, both interference fit played the effect of preliminary fixed dog for people can not remove at will the locating piece when the elastic ring is established to the cover.

The utility model discloses further set up to: the clamping blocks and the clamping grooves are hemispherical.

By adopting the technical scheme, the contact surface of the clamping block and the clamping groove is the cambered surface, so that the clamping block can more smoothly extend into the clamping groove.

The utility model discloses further set up to: the terminal surface integrated into one piece that the screw rod was kept away from to the nut has the solid fixed ring that is located the screwdriver groove outside, gu fixed ring keeps away from the terminal surface of nut and is less than the terminal surface that the dog is close to the nut.

Through adopting above-mentioned technical scheme, there is certain difference in height between dog and the nut, avoids the locating piece because the interval undersize with the nut and influence the staff cover and establish the elastic ring. In addition, the fixing ring also has a certain dustproof effect, and the channel for blowing dust into the screw groove from the side surface is reduced.

The utility model discloses further set up to: the end face, far away from the screw cap, of the fixing ring is fixed with a rubber ring.

Through adopting above-mentioned technical scheme, earlier when the dog rotates with the rubber circle contact and extrusion rubber circle make it produce deformation, the rubber circle after the deformation can fill the gap between dog and the rubber circle, plays further dirt-proof effect, avoids the dust to get into the spiral shell sword groove from the gap between solid fixed ring and the dog.

The utility model discloses further set up to: the terminal surface that the screw rod was kept away from to the nut is equipped with rotates the groove, the pivot is the round platform form and is located and rotates the inslot, the pivot is trapezoidal and the higher authority with the perpendicular cross-section that rotates the groove and is the minor face.

Through adopting above-mentioned technical scheme, when rotating the dog, the pivot can be followed and rotated the groove and rotate, and the pivot is round platform form and has restricted it and has rotated the groove separation to avoid people to shift out from the opening that rotates the groove when inverting the bolt pivot.

The utility model discloses further set up to: and a deflector rod is fixed on the side wall of the stop block far away from the rotating shaft.

By adopting the technical scheme, the deflector rod increases the moment when the stop block is pushed by a human hand, and has the effect of saving labor; meanwhile, the hand acts on the deflector rod instead of the stop block, so that the hand is not easy to separate from the stop block.

The utility model discloses further set up to: the nut is in the shape of a regular hexagon.

Through adopting above-mentioned technical scheme, except utilizing the screwdriver dismouting bolt with the adaptation of spiral shell sword groove, people still can rotate the nut through the spanner, and then drive the screw rod and rotate the dismouting in order to realize the bolt.

To sum up, the utility model discloses following beneficial effect has:

1. when the screwdriver slot is not used, the deflector rod is pushed by hand to drive the stop block to rotate towards one side close to the limiting block, so that the positioning block extends into the limiting hole, the elastic ring is tightly sleeved in the fixing groove to limit the separation of the positioning block and the limiting hole, and the stop block can seal the opening of the screwdriver slot at the moment, thereby avoiding the blockage of dust accumulation in the screwdriver slot and not influencing the assembly and disassembly of the bolt;

2. the clamping block and the clamping groove are in interference fit to play a role in preliminarily positioning the stop block, so that people can conveniently sleeve the elastic ring in the fixing groove; people can stretch the slender rod into the mounting hole to drive the mounting block and the elastic ring to deform, so that people can separate the elastic ring from the positioning block;

3. the fixing ring has the function of separating the stop block and the screw cap, so that a gap for placing the elastic ring by the gloves is formed between the stop block and the screw cap; the rubber ring can be deformed when the stop block rotates to the position right above the fixing ring, so that the gap between the fixing ring and the stop block is filled, and dust is prevented from entering the screw groove from the gap between the stop block and the fixing ring.

Drawings

FIG. 1 is a schematic structural view of the present embodiment in which the screw groove is closed;

FIG. 2 is a schematic view showing the structure of the present embodiment when the screw groove is opened;

fig. 3 is a schematic view of a partial explosion when the rotation shaft and the rotation groove are separated in this embodiment.

Reference numerals: 1. a nut; 2. a screw; 3. a screw slot; 4. a rotating groove; 5. a rotating shaft; 6. a stopper; 7. a deflector rod; 8. a limiting block; 9. a limiting hole; 10. positioning blocks; 11. fixing grooves; 12. an elastic ring; 13. mounting blocks; 14. mounting holes; 15. a clamping block; 16. a card slot; 17. a fixing ring; 18. a rubber ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a dustproof bolt, as shown in fig. 1 and 2, the dustproof bolt comprises a nut 1 and a screw rod 2 which are fixedly connected, the cross section of the nut 1 is a regular hexagon and is collinear with the central axis of the screw rod 2, and a thread groove 3 is formed in the end face, far away from the screw rod 2, of the nut 1. People can stretch a screwdriver matched with the screwdriver slot 3 into the screwdriver slot 3 to drive the screw cap 1 to rotate, and then the screw rod 2 is driven to rotate to realize the dismounting and mounting of the bolt.

As shown in fig. 2 and 3, a rotation groove 4 is formed in the end surface, far away from the screw rod 2, of the nut 1, a rotating shaft 5 in a circular truncated cone shape is rotatably connected in the rotation groove 4, the upper end surface of the rotating shaft 5 exceeds the upper end surface of the nut 1, and the vertical sections of the rotating shaft 5 and the rotation groove 4 are both trapezoidal and the upper side is a short side. A stop block 6 is fixed on the side wall of the rotating shaft 5, and the cross section area of the stop block 6 is larger than that of the screw groove 3 and can seal the opening of the screw groove 3. When the screw groove 3 is not used, people can rotate the stop block 6 right above the screw groove 3, so that the opening of the screw groove 3 is closed, dust is prevented from entering the screw groove 3 to block the screw groove, and the dismounting and mounting of a bolt cannot be influenced.

As shown in fig. 1 and 2, a shift lever 7 is fixed on the side wall of the stop block 6 far away from the rotating shaft 5, and the shift lever 7 increases the moment when the stop block 6 is rotated by a human hand, so that the labor-saving effect is achieved.

As shown in fig. 1 and 2, the end face of the nut 1 far away from the screw rod 2 is fixed with a limiting block 8, the middle part of the limiting block 8 is provided with a limiting hole 9, the end face of the limiting block 6 close to the limiting block 8 is fixed with a positioning block 10, and the positioning block 10 is detachably connected with a fixing piece. The surface of locating piece 10 is equipped with fixed slot 11, and fixed slot 11 is the annular and everywhere the degree of depth is the same, and the mounting is including the elastic ring 12 of cover establishing in fixed slot 11, and elastic ring 12 can be made by materials that have resilience performance such as rubber, and the thickness of elastic ring 12 is greater than the degree of depth of fixed slot 11. When the stopper 6 moves towards the stopper 8, wear out spacing hole 9 with locating piece 10 for fixed slot 11 is located stopper 8 and keeps away from one side of stopper 6, then tensile elastic ring 12 makes its cover tightly in fixed slot 11, and the surface of elastic ring 12 is located the outside of locating piece 10 this moment, plays the effect of limiting locating piece 10 and spacing hole 9 separation.

As shown in fig. 1 and 3, an installation block 13 is integrally formed on an outer wall of the elastic ring 12, and an installation hole 14 is formed in the middle of the installation block 13. When separating elastic ring 12 and locating piece 10, people can stretch into mounting hole 14 with the pin rod that the diameter is less than 14 internal diameters of mounting hole, recycle pin rod drive installation piece 13 and produce deformation to the one end of driving elastic ring 12 upwarps, and the clearance increase of elastic ring 12 and locating piece 10 has the effect that makes things convenient for people to demolish elastic ring 12 at this moment.

As shown in fig. 2, two locking blocks 15 are fixed on the end surface of the limiting block 8 close to the locking block 6, and the two locking blocks 15 are both hemispherical and located on two sides of the limiting hole 9 respectively. The end face of the stop block 6 close to the limiting block 8 is provided with two hemispherical clamping grooves 16, the two clamping grooves 16 are respectively positioned at two sides of the positioning block 10, and the clamping blocks 15 are in interference fit with the clamping grooves 16. When dog 6 and stopper 8 butt, during locating piece 10 worn out spacing hole 9, two fixture blocks 15 embedded respectively rather than the draw-in groove 16 that corresponds, fixture block 15 and draw-in groove 16 interference fit play the effect of preliminary location dog 6 for dog 6 can not remove at will when the elastic ring 12 is established to the cover.

As shown in fig. 2 and 3, a fixing ring 17 is integrally formed on an end surface of the nut 1 away from the screw 2, the fixing ring 17 is collinear with a central axis of the screw 2 and is located outside the screw slot 3, and a height of the fixing ring 17 is slightly smaller than a distance between a lower end surface of the stopper 6 and the nut 1. The end face, far away from the nut 1, of the fixing ring 17 is fixed with a rubber ring 18, and the rubber ring 18 deforms when the stop block 6 moves towards the limiting block 8 and fills a gap between the stop block 6 and the fixing ring 17, so that dust is prevented from entering the screw groove 3 and being blocked.

The working principle of the embodiment is as follows: when the screw groove 3 is not used, the poking rod 7 is pushed by hands first to drive the stop block 6 to move to one side close to the limit block 8 until the stop block 6 abuts against the limit block 8, so that the positioning block 10 penetrates out of the limit hole 9, the clamping block 15 and the clamping groove 16 in interference fit, then the elastic ring 12 is tightly sleeved in the fixing groove 11, and the positioning block 10 is limited to move out of the limit hole 9. The stop block 6 can seal the upper opening of the screw groove 3, so that the blockage caused by dust accumulation in the screw groove 3 is avoided, and the disassembly and assembly of the bolt cannot be influenced.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a dustproof bolt, includes fixed nut (1) and the screw rod (2) that link to each other, the terminal surface that screw rod (2) were kept away from in nut (1) is equipped with screw groove (3), its characterized in that: the nut (1) is rotatably connected with a rotating shaft (5), one side, penetrating out of the nut (1), of the rotating shaft (5) is connected with a stop block (6), a positioning block (10) is arranged on the side wall of the stop block (6), a limiting block (8) is fixed on the nut (1), a limiting hole (9) for the positioning block (10) to penetrate out is formed in the limiting block (8), and a fixing piece for limiting the positioning block (10) to be separated from the limiting hole (9) is detachably connected to the positioning block (10); when the positioning block (10) penetrates out of the limiting hole (9), the stop block (6) seals the opening of the screw groove (3).

2. A dust stud according to claim 1, wherein: the outer surface of the positioning block (10) is provided with an annular fixing groove (11), and the fixing piece comprises an elastic ring (12) sleeved in the fixing groove (11); when the elastic ring (12) is tightly sleeved in the fixing groove (11), the end face, far away from the fixing groove (11), of the elastic ring (12) exceeds the outer wall of the positioning block (10).

3. A dust stud according to claim 2, wherein: the outer wall of the elastic ring (12) is integrally formed with an installation block (13), and the middle of the installation block (13) is provided with an installation hole (14).

4. A dust stud according to claim 1, wherein: the end face of the limiting block (8) close to the stop block (6) is fixed with at least one clamping block (15), the end face of the stop block (6) close to the limiting block (8) is provided with clamping grooves (16) which are equal in number and correspond to the clamping blocks (15), and the clamping blocks (15) are in interference fit with the clamping grooves (16).

5. A dust stud according to claim 4, in which: the clamping blocks (15) and the clamping grooves (16) are hemispherical.

6. A dust stud according to claim 1, wherein: the end face, far away from the screw rod (2), of the nut (1) is integrally provided with a fixing ring (17) located on the outer side of the screw groove (3), and the end face, far away from the nut (1), of the fixing ring (17) is lower than the end face, close to the nut (1), of the stop block (6).

7. A dust stud according to claim 6, wherein: the end face, far away from the screw cap (1), of the fixing ring (17) is fixed with a rubber ring (18).

8. A dust stud according to claim 1, wherein: the terminal surface that screw rod (2) were kept away from in nut (1) is equipped with and rotates groove (4), pivot (5) are the round platform form and are located and rotate groove (4), the perpendicular cross-section of pivot (5) and rotation groove (4) is trapezoidal and the higher authority is the minor face.

9. A dust stud according to claim 8, wherein: and a deflector rod (7) is fixed on the side wall of the stop block (6) far away from the rotating shaft (5).

10. A dust stud according to claim 1, wherein: the nut (1) is in a regular hexagon shape.