CN213684882U

CN213684882U - High leakproofness's brill tail screw

Info

Publication number: CN213684882U
Application number: CN202022766943.9U
Authority: CN
Inventors: 赵显永
Original assignee: Jiashan Jiarui Precision Hardware Technology Co ltd
Current assignee: Jiashan Jiarui Precision Hardware Technology Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-07-13
Anticipated expiration: 2030-11-25

Abstract

A drill screw with high sealing performance comprises a screw head, a screw rod, threads, a drill bit and a sealing ring. The screwhead includes the nut, the flange, the drill bit is including boring the body, cutting part to and chip groove, the sealing washer includes body, fixed part, and recess. The body sleeve is established on the lateral surface of the body of rod, makes after the locking form sealedly between brill tail screw and the locking plane, prevents that water and dust from getting into. The fixing part comprises a fitting section and an inclined plane end. The laminating section surface be equipped with anti-skidding line and with the lateral wall laminating of the body of rod prevents the sealing washer cover is established the back and is slided. An obtuse angle is formed between the plane where the inclined plane end is located and the plane where the attaching section is located, so that the inclined plane end has a guiding function. The groove is of an annular groove structure and is arranged on the body, and after the groove is locked, the inner portion of the groove is in a vacuum state, so that the sealing ring is adsorbed on the screw head, and the sealing performance is further improved.

Description

High leakproofness's brill tail screw

Technical Field

The utility model relates to a screw technical field, in particular to brill tail screw of high leakproofness.

Background

Screws are tools that utilize the physics and mathematical principles of the object's beveled circular rotation and friction to tighten an object's work in a progressive manner. The self-drilling screw is a screw with a drill bit at the front end of the screw, and construction is carried out through a special electric tool, so that drilling, tapping, fixing and locking can be completed at one time. The penetration capacity of the self-drilling screw is generally not more than 6mm, and the maximum penetration capacity of the self-drilling screw is not more than 12mm, so that the self-drilling screw is mainly used for connecting and fixing some thin plate pieces, such as the connection of a color steel plate and a color steel plate, the connection of the color steel plate and purlins and wall beams, and the like. However, the self-drilling screw is often exposed outdoors, and thus the sealing property of the self-drilling screw is very important.

The existing self-drilling screw is directly arranged on a locking plane when being locked, the sealing performance of the screw is poor, and dust and rainwater in the environment can easily enter the self-drilling screw, so that the connection strength of the screw is reduced, and the service life is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a self drilling screw of high leakproofness to solve above-mentioned technical problem.

The utility model provides a high leakproofness's drill tail screw, its includes a screwhead, one with the body of rod that the screwhead is connected, one with the drill bit that the body of rod is connected, and a cover is established sealing washer on the body of rod. One end of the rod body is connected with the screw head, and the other end of the rod body is connected with the drill bit. The drill bit comprises a drill body connected with the rod body, two cutting parts arranged on the drill body and two chip grooves arranged on the drill body. The drill body is connected with one end of the rod body, which is far away from the screw head, and the two cutting parts are respectively and oppositely arranged on the edges of the two sides of the drill body. The two chip grooves are respectively arranged on two sides of the drill body and located between the two cutting parts, and one ends of the chip grooves extend out of the drill body and extend into the threads. The sealing ring comprises a body sleeved on the rod body, at least three fixing parts arranged on the body at intervals, and a groove arranged on the body. The body one end with the laminating of screwhead, each the fixed part includes one sets up the laminating section of body inner circle, and one sets up the inclined plane end of the one end of laminating section. The surface of the attaching section is provided with anti-skid grains and is attached to the rod body, the inclined plane end is located between the attaching section and the screw head, an obtuse angle is formed between the plane where the inclined plane end is located and the plane where the attaching section is located, and the opening direction of the groove faces towards the screw head.

Furthermore, the high-tightness self-drilling screw further comprises a thread spirally arranged on the outer side surface of the rod body along the axial direction of the rod body.

Further, the screw head includes a nut, and a flange disposed on an end of the nut.

Further, the diameter of the flange is larger than the diameter of the nut.

Further, the central angle of the groove is 180 degrees.

Further, the central axis of the drill body and the central axis of the rod body coincide with each other.

Further, the distances between the adjacent fixing portions are equal.

Further, the seal ring is made of a rubber material and is integrally molded.

Further, the screw head, the rod body, the thread, and the drill bit are integrally formed.

Further, the angle between the plane of the bevel end and the plane of the attaching section is 135 degrees to 145 degrees.

Compared with the prior art, the utility model provides a high leakproofness's brill tail screw is through the design the structure of sealing washer, specifically, the sealing washer includes that a cover is established body on the body of rod, at least three setting is in fixed part on the body to and a setting is in the body upper groove. The body is of an annular structure and is sleeved on the outer side face of the rod body, so that sealing is formed between the self-drilling screw and the locking plane after locking, and water and dust are prevented from entering. The fixing part comprises a fitting section arranged on the inner ring of the body and an inclined plane end arranged at one end of the fitting section. The surface of the joint section is provided with anti-slip lines, so that the joint end and the rod body are prevented from slipping. An obtuse angle is formed between the plane where the inclined plane end is located and the plane where the attaching section is located, so that the inclined plane end has a guiding function, and the sealing ring is easier to sleeve. The groove is arranged on the body in an annular groove structure. The opening direction of the groove faces the flange. After locking, the sealing washer receives the marginal zonulae occludens of extrusion and drilling, just the air in the recess is extruded away, makes inside being hollow state of recess adsorbs on the screw head to further improve the leakproofness, prevent that water, dust etc. from getting into in the brill tail screw, improving joint strength and connection life.

Drawings

Fig. 1 is the utility model provides a structural schematic diagram of a self drilling screw of high leakproofness.

Fig. 2 is a schematic cross-sectional view of the drill screw of fig. 1.

Fig. 3 is a schematic structural view of a seal ring of the high-sealability self-drilling screw of fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 to fig. 3, it is a schematic structural diagram of the self drilling screw with high sealing performance provided by the present invention. The high-tightness self-drilling screw comprises a screw head 10, a rod body 20 connected with the screw head, a thread 30 arranged on the rod body 20, a drill bit 40 connected with the rod body 20, and a sealing ring 50 sleeved on the rod body 20. The screw head 10, the shaft 20, the thread 30, and the drill bit 40 may be integrally formed. It is contemplated that the water pump with high sealing performance may further include other functional modules, such as screw head clamping devices, etc., which are well known to those skilled in the art and will not be described herein.

The screw head 10 comprises a screw cap 11 and a flange 12 arranged on the screw cap 11. Nut 11 is the hexagon shape, nut 11 is used for being connected with outside electric drill sleeve (not shown), drives through outside electric drill sleeve the brill tail screw is rotatory. The flange 12 is arranged at the bottom end of the screw cap 11, the flange 12 is of a disc structure, and the diameter of the flange 12 is larger than that of the screw cap 11. The flange 12 top with the nut 11 is connected, flange 12 bottom with the body of rod 20 is connected, thereby passes through flange 12 connects the nut 11 with the body of rod 20 strengthens simultaneously the nut 11 with the joint strength of the body of rod 20, and prevents the nut 11 directly with sealing washer 50 contact, can effectively prevent the nut 11 with the wearing and tearing of sealing washer 50 increase life.

One end of the rod body 20 is connected with the flange 12, and the other end is connected with the drill bit 30. The rod body 20 is of a cylindrical structure. The shank 20 serves to connect the screw head 10 and the drill 30 and is provided with the thread 30 on the outer side thereof.

The thread 30 is spirally provided on the shaft 20 in the axial direction of the shaft 20. The thread 30 is used for tapping during rotary drilling and for fastening the coupling after drilling. Which is per se prior art and will not be described in further detail herein.

The drill 40 includes a drill body 41 connected to the shaft 20, two cutting portions 41 respectively provided on the drill body 41, and two flutes 43 provided on the drill body 41. The drill body 41 is connected with one end of the rod body 20 far away from the screw head 10, and the central axis of the drill body 41 and the central axis of the rod body 10 are coincident with each other. The drill body 41 is used for providing the cutting portion 41 and the chip groove 43. The two cutting portions 41 are respectively oppositely arranged on the edges of two sides of the drill body 41, so that the two cutting portions 41 are firstly contacted with a locking plane (not shown). The cutting portion 41 is used for cutting and enlarging a drill hole when the self-drilling screw rotates for drilling. The two chip discharge grooves 43 are respectively arranged on two sides of the drill body 41 and between the two cutting parts 41, and the chip discharge grooves 43 are used for discharging crushed aggregates generated in the drilling process, so that the resistance in the drilling process is reduced, and the drilling efficiency is improved. The one end of chip groove 43 extends and bores body 41 and stretches into in the body of rod 20, make chip groove 43 highly be greater than bore the height of body 41 to the discharge of crushed aggregates is convenient for, improves the efficiency of chip removal.

The sealing ring 50 is made of rubber materials and is integrally formed, the sealing ring 50 comprises a body 51 sleeved on the rod body 20, at least three fixing portions 52 arranged on the body 51 and a groove 53 arranged on the body 51. The body 51 is the loop configuration and overlaps and establish on the lateral surface of the body of rod 20, the body 51 is located the screwhead 10 with between the screw thread 30, body 51 one end with the laminating of flange 12, the other end of body 51 with the laminating of locking plane makes after the locking form sealedly between brill tail screw and the locking plane, prevents that water and dust from getting into. The number of the fixing portions 52 is at least three, and in the present embodiment, the number of the fixing portions 52 is six. The fixing portions 52 are spaced apart from each other on the inner ring of the body 51, and the distances between adjacent fixing portions 52 are equal. Each of the fixing portions 52 includes an attaching section 521 provided at an inner circumference of the body 51, and a slant end 522 provided at an end of the attaching section 521. The laminating section 521 is arranged on the inner ring of the body 51 and is laminated with the outer side wall of the rod body 20, and anti-slip lines are arranged on the surface of the laminating section 521, so that the sealing ring 50 is prevented from slipping after being sleeved. The inclined end 522 is located between the attaching end 521 and the screw head 10, and an obtuse angle is formed between a plane where the inclined end 522 is located and a plane where the attaching section 521 is located, and the obtuse angle is 135 degrees to 145 degrees, so that the inclined end 522 has a guiding function, when the sealing ring 50 is sleeved, the thread 30 is firstly in contact with the inclined end 522, and the sealing ring 50 is easier to be sleeved. The groove 53 is of an annular groove structure and is arranged on the body 51. The central angle of the groove 53 is 180 degrees and the opening direction of the groove 53 faces the flange 12, after the self-drilling screw is locked, the screw head 10 extrudes the sealing ring 50, so that the air in the groove 53 is extruded, the inside of the groove 53 is in a vacuum state, the sealing ring 50 is adsorbed on the screw head 10, the sealing ring 50 is prevented from loosening, and the sealing performance is further improved.

When in use, the groove 53 of the sealing ring 50 is first directed towards the screw head 10 and the sealing ring 50 is fitted over the screw 20, and then the screw cap 11 is connected to the outer power sleeve. The drill tail screw is driven to rotate and drill through the external electric sleeve, the cutting portion 42 firstly contacts with the locking plane and performs drilling and cutting, and waste materials generated by cutting are discharged through the chip groove 43. After locking, the sealing ring 50 is tightly connected with the edge of a drilled hole by extrusion, and the air in the groove 53 is extruded out, so that the groove 53 is hollow and is adsorbed on the screw head 10, thereby forming sealing to prevent water, dust and the like from entering the self-drilling screw, improving the connection strength and prolonging the connection service life.

Compared with the prior art, the utility model provides a high leakproofness's drill tail screw is through the design sealing washer 50's structure, specifically, sealing washer 50 includes that a cover is established body 51 on the body of rod 20, at least three setting is in fixed part 52 on the body 51, and one sets up body 51 upper groove 53. The body 51 is of an annular structure and is sleeved on the outer side surface of the rod body 20, so that sealing is formed between the self-drilling screw and the locking plane after locking, and water and dust are prevented from entering. The fixing portion 52 includes an attaching section 521 provided at an inner circumference of the body 51, and a slant end 522 provided at an end of the attaching section 521. The surface of the attaching section 521 is provided with anti-slip lines, so as to prevent the attaching end 521 and the stick body 20 from slipping. An obtuse angle is formed between the plane of the inclined end 522 and the plane of the attaching section 521, so that the inclined end 522 has a guiding function, and the sealing ring 50 is easier to sleeve. The groove 53 is arranged on the body 51 in an annular groove structure. The opening of the recess 53 is directed towards the flange 12. After locking, sealing washer 50 receives the extrusion and drills the edge zonulae occludens, just the air in the recess 53 is extruded away, makes recess 53 is inside to be hollow state and adsorbs on screwhead 10 to further improve the leakproofness, prevent in water, dust etc. get into the tail screw of boring, improve joint strength and connection life.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. The utility model provides a drill tail screw of high leakproofness which characterized in that: the high-tightness self-drilling screw comprises a screw head, a rod body connected with the screw head, a drill bit connected with the rod body, and a sealing ring sleeved on the rod body, wherein one end of the rod body is connected with the screw head, the other end of the rod body is connected with the drill bit, the drill bit comprises a drill body connected with the rod body, two cutting parts arranged on the drill body and two chip-removing grooves arranged on the drill body, the drill body is connected with one end, far away from the screw head, of the rod body, the two cutting parts are respectively and oppositely arranged on the edges of two sides of the drill body, the two chip-removing grooves are respectively arranged on two sides of the drill body and are positioned between the two cutting parts, one end of each chip-removing groove extends out of the drill body and extends into the rod body, and the sealing ring comprises a body sleeved on the rod body, at least three interval sets up fixed part on the body, and one sets up recess on the body, body one end with the screwhead laminating, each the fixed part includes that one sets up the laminating section of body inner circle, and one sets up the inclined plane end of the one end of laminating section, laminating section surface be equipped with anti-skidding line and with the body of rod laminating, the inclined plane end is located the laminating section with between the screwhead, inclined plane end place plane with an obtuse angle has between the laminating section place plane, the opening direction orientation of recess the screwhead.

2. The drill screw with high sealing performance as claimed in claim 1, wherein: the high-tightness self-drilling screw further comprises a thread spirally arranged on the outer side surface of the rod body along the axial direction of the rod body.

3. The drill screw with high sealing performance as claimed in claim 1, wherein: the screw head includes a nut and a flange disposed on an end of the nut.

4. The drill screw with high sealing performance as claimed in claim 3, wherein: the flange has a diameter greater than the diameter of the nut.

5. The drill screw with high sealing performance as claimed in claim 1, wherein: the central angle of the groove is 180 degrees.

6. The drill screw with high sealing performance as claimed in claim 1, wherein: the central axis of the drill body and the central axis of the rod body are coincident with each other.

7. The drill screw with high sealing performance as claimed in claim 1, wherein: the distances between the adjacent fixing parts are equal.

8. The drill screw with high sealing performance as claimed in claim 1, wherein: the sealing ring is made of rubber materials and is integrally formed.

9. The drill screw with high sealing performance as claimed in claim 2, wherein: the screw head, the rod body, the threads, and the drill bit are integrally formed.

10. The drill screw with high sealing performance as claimed in claim 1, wherein: the angle between the plane of the bevel end and the plane of the attaching section is 135-145 degrees.