TWI722808B - Anti-vibration and anti-loosening screw assembly - Google Patents

Abstract

The invention relates to an anti-vibration and anti-loosening screw assembly. It comprises a screw and a nut. The screw includes a head and a screw portion disposed at a bottom of the head, and the screw portion is provided with a through hole at its axis. The nut includes a thread groove portion having an opening facing upward and being screwed and locked with the screw portion. A post is protruded from a center of the thread groove portion, and there is an eccentric relationship between through hole and the post. Therefore, in a state where the nut and the screw are locked with each other, and the post correspondingly penetrates into the through hole, the eccentric relationship between the through hole and the post produces tightening force between the nut and the screw due to mutual inhibition to achieve the effect of anti-vibration and anti-loosening after the nut part and the screw part are locked.

Description

Anti-vibration and anti-loose screw assembly

The invention relates to an anti-vibration and anti-loosening screw assembly, in particular to an innovative structural design of a screw assembly that can be tightly locked and fixed and not easily loosened.

Screws, nuts and other screw components are used to lock and join two (or more) workpieces. Therefore, although these screw components are a small component, if they do not perform their locking function, they will cause the two The workpieces cannot be firmly joined together, which leads to the inaccurate operation of equipment and mechanisms, and even collapses and damages.

Please refer to China's invention application No. TW 201812188, which is a lock washer structure. The front of the washer is mainly provided with a plurality of anti-reverse bevel teeth that are inclined from the outside to the inside. The outer end of the non-reverse bevel teeth is formed with a sharp The angle can be easily inserted into the screw to produce a better anti-reverse effect, and is matched with the back of the washer with a plurality of positioning bevel teeth arranged in the opposite direction to the anti-reverse bevel teeth, each positioning bevel tooth has an arc edge, It is used for large-area and firm embedding and positioning in the workpiece, so that it can have a good anti-reverse locking effect.

Refer again to my country's Patent No. TW I535941, which discloses a locking assembly and countersunk screws. The locking assembly includes a first plate, a second plate, and a countersunk screw. The countersunk screw includes a threaded portion and a head. The threaded portion has an axis. The head is arranged at one end of the threaded portion and has a first ring-shaped wall surface and a second ring-shaped wall surface. The second ring-shaped wall surface lies between Between the first ring-shaped wall surface and the threaded portion, a first acute angle is formed between the first ring-shaped wall surface and the shaft center, and a second acute angle is formed between the second ring-shaped wall surface and the shaft center, and the first acute angle is different from The second acute angle; thereby, the countersunk screw is stably locked in the first plate and the second plate, and does not protrude from the first plate, so as to solve the problem of poor locking force in the traditional locking assembly.

Please refer to China's CN 208900501 New Type Patent Case, which relates to the technical field of fasteners, and discloses an anti-loosening bolt. The main point of the technical solution is an anti-loosening bolt, which includes a bolt and a locking sleeve sleeved on the bolt. The bolt includes a nail head connected in sequence, a polished rod section matched with the connected workpiece, and a spiral groove and a locking sleeve are provided on the surface. The matching locking section and the clamping section with an annular groove fixed on the surface with an external locking tool are provided; the connection between the locking section and the clamping section is provided with a breaking groove for breaking the clamping section, and the breaking groove surrounds The clamping section is arranged, and the cross-sectional shape of the breaking groove in the length direction of the bolt is "レ" shape.

Please refer to my country's new patent case No. TW M562351, which is a two-piece anti-loosening screw assembly, which includes a screw and a washer. The screw includes a screw body and a screw head. The screw body has a threaded section spaced from the screw head and formed with threads on the outer surface, and a connecting section connected between the screw head and the threaded section. The screw head has a sawtooth-shaped head ring surface facing the screw body and surrounding the connecting section. The washer is ring-shaped and passes through the connecting section, and is limited between the screw head and the threaded section , And has a serrated inner ring surface facing the screw head and an outer ring surface opposite to the inner ring surface, the inner ring surface can rotatably engage the head ring surface of the screw head, the head ring The surface, the inner ring surface, and the outer ring surface are in a sawtooth shape, which can stop and prevent loosening.

Today, the inventor has developed the anti-vibration and anti-loosening screw element of the present invention due to the importance of the screw element for the precise operation of the mechanism and equipment.

The main purpose of the present invention is to provide an anti-vibration and anti-loosening screw assembly, which mainly penetrates through the corresponding eccentricity of the shaft hole of the screw member and the center cylinder of the nut member, so that the screw member and the nut member can be It does bite and does not loosen easily.

Another object of the present invention is to sense the locked state between the screw member and the nut member through the sensor installed in the perforation, so as to ensure that the screw member and the nut member can be dealt with immediately when there is a loose phenomenon between the screw member and the nut member. , To avoid endangering life and property.

The purpose and effect of the present invention are achieved by the following technologies:

An anti-vibration and anti-loosening screw assembly includes a screw part and a nut part; the screw part includes a head and a screw part arranged on the bottom surface of the head, and the shaft of the screw part is provided with a perforation; The nut includes a threaded groove portion with an opening facing upward, the threaded groove portion and the screw portion are screwed and locked correspondingly, the center of the threaded groove portion is convexly provided with a column, the through hole, the column One of the bodies is eccentrically arranged, so that there is an eccentric relationship between the perforation and the cylinder. When the nut member and the screw member are locked with each other, the cylinder and the perforation correspond to each other. Equipped with eccentric and stable combination through sleeves.

The anti-vibration and anti-loose screw assembly as described above, wherein the perforation is a circular hole, and the cylinder is a cylinder that matches the shape of the perforation.

The anti-vibration and anti-loosening screw assembly as described above, wherein the perforation penetrates through the head.

The anti-vibration and anti-loosening screw assembly as described above, wherein a sensor is installed in the perforation, and when the screw member and the nut member are locked to each other, the cylinder presses against the sensor Device.

The advantages of the present invention are:

1. The anti-vibration and anti-loosening screw assembly of the present invention is provided with a through hole in the shaft of the screw part of the screw part, and a cylindrical body is protruding from the center of the thread groove part of the nut part, and between the hole and the cylindrical body is The eccentric bushing relationship, so when the nut and the screw are screwed to each other, the cylinder can penetrate into the perforation correspondingly, and generate the force of mutual restraint in the vertical and lateral directions, so that the nut and the screw The screw parts are more closely combined, so even if vibration occurs during the operation of the mechanism or equipment, the restraining effect between the screw part and the nut part prevents the misalignment of the vibration between the two, thereby achieving the effect of anti-vibration and anti-loosening.

2. In the anti-vibration and anti-loosening screw assembly of the present invention, a sensor is further installed in the perforation of the screw member, so that the screw member and the nut member are locked to each other by using the cylinder pressure touch sensor to confirm each other When the sensor does not sense the pressing force of the cylinder, it means that there is a loosening phenomenon between the screw part and the nut part, and then sends a message to notify the personnel to pay attention to avoid life-threatening A property safety incident occurred.

In order to make the technical content, the purpose of the invention and the effects achieved by the present invention more complete and clear, the following detailed descriptions are given, and please refer to the disclosed drawings and figure numbers together:

Please refer to the first and second pictures.

The anti-vibration and anti-loosening screw assembly of the present invention includes a screw member 1 and a nut member 2; wherein:

The screw member 1 is provided with a head 11, and a rod-shaped screw part 12 is integrally extended downward on the bottom surface of the head 11 and is provided with a threaded screw part 12 on the surface, and a perforation 13 is provided at the axis of the screw part 12, the perforation 13 And further penetrate the head 11;

The nut 2 is a cap body, which has a threaded groove 21 with an opening facing upwards and threads on the peripheral wall. The threaded groove 21 and the screw 12 are screwed and locked correspondingly, and the center of the threaded groove 21 is projected with a cylinder. 22. In the state where the nut member and the screw member are locked with each other, the cylinder 22 and the perforation 13 are fitted, in particular, one of the cylinder 22 or the perforation 13 is arranged eccentrically, so that the cylinder 22 and the perforation 13 There is an eccentric relationship between them; in the preferred embodiment of the drawings disclosed in the present invention, the column 22 is arranged eccentrically.

In the embodiment of the anti-vibration and anti-loosening screw assembly disclosed in the drawings of the present invention, the perforation 13 provided at the screw portion 12 of the screw member 1 is a circular hole, and is provided in the thread groove portion of the nut member 2 The cylinder 22 inside 21 is a cylinder.

In this way, in the anti-vibration and anti-loosening screw assembly of the present invention, a through hole 13 is provided at the shaft center of the screw portion 12 of the screw member 1, and a cylindrical body 22 is protruding from the center of the thread groove portion 21 of the nut member 2. , And the cylinder 22 and the perforation 13 are in an eccentric relationship. When the nut member 2 and the screw member 1 are screwed to each other, the cylinder 22 can not only fit into the perforation 13 correspondingly, but also the cylinder 22 and the perforation 13 Different degrees of vertical and lateral forces are generated between the nut member 2 and the screw member 1 to suppress each other's vibration. Therefore, when the mechanism or equipment is operating and therefore generates vibration, it can rely on the column The eccentricity and corresponding fit and limit relationship between the body 22 and the perforation 13 suppress the misalignment vibration between the screw member 1 and the nut member 2, thereby achieving the effects of anti-vibration and anti-loosening.

Furthermore, the present invention can further install a sensor 3 in the perforation 13 of the screw member 1, and when the screw member 1 and the nut member 2 are mutually locked, the cylinder 22 of the nut member 2 can be pressed and touched. Detector 3, and confirm the locked state of screw 1 and nut 2. When the cylinder 22 is not pressed against the sensor 3, it means that there is looseness between screw 1 and nut 2. At this time, the sensor 3 can be made to send a message to notify relevant personnel to come to the site for maintenance and inspection, and to prevent the occurrence of events that endanger the safety of life and property caused by the loosening of the screw member 1 and the nut member 2.

The above-mentioned examples are only part of the embodiments of the present invention, and are not intended to limit the present invention. Any modification based on the creative spirit and characteristics of the present invention should also be included in the scope of this patent.

In summary, the embodiments of the present invention can indeed achieve the expected use effects, and the specific technical means disclosed by it have not been seen in similar products, nor have they been disclosed before the application. It is in full compliance with the patent law. Regulations and requirements, Yan submits an application for a patent for invention in accordance with the law, and asks for favors for examination and grants a patent, which is really convenient.

1: Screw parts

11: head

12: Screw part

13: Piercing

2: Nut parts

21: Thread groove

22: Cylinder

3: sensor

Figure 1: A three-dimensional exploded view of the anti-seismic and anti-loose screw assembly of the present invention

Figure 2: A cross-sectional view of the anti-vibration and anti-loosening screw assembly of the present invention, where the screw part and the nut part are combined but not tightened

Figure 3: A cross-sectional view of the anti-vibration and anti-loosening screw assembly of the present invention, where the screw part and the nut part are combined and tightened

Figure 4: A cross-sectional view of the anti-vibration and anti-loosening screw assembly of the present invention with the sensor, the screw part and the nut part assembled, but not yet tightened

Figure 5: A cross-sectional view of the anti-vibration and anti-loosening screw assembly of the present invention with the sensor, screw and nut assembly installed and tightened

1: Screw parts

11: head

12: Screw part

13: Piercing

2: Nut parts

21: Thread groove

22: Cylinder

Claims (5)

An anti-vibration and anti-loosening screw assembly includes a screw part and a nut part; the screw part includes a head and a screw part arranged on the bottom surface of the head, and is arranged along the axis of the screw part Perforation; The nut includes a threaded groove portion with an opening facing upwards, the threaded groove portion and the screw portion are screwed and locked correspondingly, the center of the threaded groove portion is convexly provided with a cylinder, the perforation, the One of the cylinders is eccentrically arranged, so that there is an eccentric relationship between the perforation and the cylinder. When the nut member and the screw member are locked with each other, the cylinder and the perforation are mutually locked. Correspondingly, eccentrically and stably puts on the sleeve. The anti-seismic and anti-loose screw assembly according to claim 1, wherein the perforation is a circular hole, and the cylinder is a cylinder that matches the shape of the perforation. The anti-vibration and anti-loosening screw assembly according to claim 1 or 2, wherein the perforation penetrates through the head. The anti-vibration and anti-loosening screw assembly according to claim 3, wherein a sensor is installed in the perforation, and when the screw member and the nut member are locked to each other, the cylinder presses against the述 Sensors. The anti-vibration and anti-loosening screw assembly of claim 1 or 2, wherein a sensor is installed in the perforation, and when the screw member and the nut member are locked to each other, the cylinder presses Touch the sensor.

Images