CN201176994Y

CN201176994Y - Improved self-tapping bolt structure

Info

Publication number: CN201176994Y
Application number: CNU2008200037400U
Authority: CN
Inventors: 突河·雷
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-19
Filing date: 2008-02-19
Publication date: 2009-01-07
Anticipated expiration: 2018-02-19

Abstract

The utility model relates to an improved self-tapping bolt structure, which comprises a screw, wherein a head part is formed on one end of the screw; the bottom surface of the head part is sleeved with a leakproof gasket; a cutting end is formed on the other end of the screw; a plurality of wing parts are formed on the screw close to the head part; a bevel edge converged from the top down is formed on the side edge of each wing part and provided with a blade which faces to the locking direction of a self-tapping bolt; and the plurality of wing parts are obliquely and helically arranged on the sidewall of the cylindrical screw, and the bevel edge and the blade arranged on the side edge of each wing part take oblique and helical shapes along with the wing parts. Therefore, because the wing parts and the blades arranged on the bevel edges of the wing parts are obliquely and helically arranged on the sidewall of the cylindrical screw, the self-tapping bolt can be locked and then a circular enlarged hole is formed by cutting on a lighting sheet, and simultaneously the stress born by the wing parts and the blade during the cutting process can be reduced so as to avoid abrasion, passivation and breakage of the blades and distortion and deformation of the wing parts, consequently the improved self-tapping bolt structure is helpful for more smooth operations of hole enlargement and screw locking.

Description

Improved tap bolt structure

Technical field

The utility model relates to a kind of bolt, relates in particular to a kind of improved tap bolt structure that helps ream operation and screw lock operation to carry out more smoothly.

Background technique

As shown in Figure 1, be a kind of existing tap bolt 10, this kind tap bolt 10 is mainly used in screw lock plane skylight, plastic cement wave plate or Metallic corrugated sheet, include a screw rod 11, screw rod 11 1 ends form a head 12, head 12 bottom surfaces cover is lined with an anti-drain gasket 20, the other end of screw rod 11 forms a cutting end 13, and be formed with the alar part 14 of two symmetries near head 12 places in screw rod 11, the lateral margin formation one of this both wing portions 14 is convergent hypotenuse 15 from top to bottom, this hypotenuse 15 is provided with one day tap bolt 10 and revolves the blade 16 of lock direction, shown in Figure 1A.

By above-mentioned structure, as shown in Figures 2 and 3, when this tap bolt 10 passed through plane skylight 30 and was fixed on the skeleton 40, can on plane skylight 30, form a circular reaming 31 (as shown in Figure 3) with the revolving lock of tap bolt 10 with cutting mode by set blade 16 on both wing portions 14 lateral margins, make the peritreme and 11 of the screw rods of this circle reaming 31 have a suitable gap, can provide plane skylight 30 rising-heat contracting-colds needed extendable room by this gap, and the needed space of rocking during earthquake, and then can reach and avoid plane skylight 30 to be squeezed and break or be out of shape.

Above-mentioned existing tap bolt 10 forms a circular reaming 31 (as shown in Figure 3) though can cut on plane skylight 30 with the revolving lock of tap bolt 10 by set blade 16 on alar part 14 lateral margins; But because alar part 14 is into vertical configuration and is located on screw rod 11 sidewalls, therefore work as alar part 14 and blade 16 in revolving circular reaming 31 processes of lock cutting plane skylight 30 formation with tap bolt 10, it will bear sizable stress, so that blade 16 is easy to the passivation of wearing and tearing, even can cause the fracture of blade 16 or the torsional deformation of alar part 14, and then cause having some setbacks and relatedly causing having some setbacks of tap bolt 10 screw lock operations of ream operation.

The model utility content

Technical problem underlying to be solved in the utility model is, overcome the above-mentioned defective that prior art exists, and provide a kind of improved tap bolt to construct, it can avoid the torsional deformation of wearing and tearing passivation, fracture or the alar part of blade, and then reaches the effect that helps ream operation and screw lock operation to carry out more smoothly.

The technological scheme that its technical problem that solves the utility model adopts is:

A kind of improved tap bolt structure, include a screw rod, screw rod one end forms a head, head bottom surface cover is lined with an anti-drain gasket, the other end of screw rod forms a cutting end, screw rod is formed with several alar parts near the head place, and the alar part lateral margin forms a convergent hypotenuse from top to bottom, and this hypotenuse is provided with one day tap bolt and revolves the blade of lock direction; It is characterized in that: these several alar parts become the tilting screw shape to be located on the cylindrical screw rod sidewall, and make set hypotenuse of alar part lateral margin and blade also be the tilting screw shape thereupon.

Whereby, become the tilting screw shape to be located on the cylindrical screw rod sidewall by alar part and the set blade of hypotenuse thereof, form the circular reaming except revolving to lock and on plane skylight, cut with tap bolt equally, can reduce simultaneously the stress that alar part and blade are born in cutting process, and avoid the torsional deformation of wearing and tearing passivation, fracture or the alar part of blade, and then reach and help ream operation and screw lock operation to carry out more smoothly.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the perspective exploded view of existing tap bolt.

Figure 1A is the enlarged diagram at position shown in Figure 1.

Fig. 2 is the side view of existing tap bolt, shows by becoming vertical configuration to be located at alar part on the screw rod sidewall to revolve with tap bolt and be locked in the situation of cutting reaming on the plane skylight.

Fig. 3 is the side view of existing tap bolt, shows by alar part to revolve the situation that is locked in cutting formation one circular reaming on the plane skylight with tap bolt.

Fig. 4 is a perspective exploded view of the present utility model.

Fig. 4 A is the enlarged diagram at position shown in Figure 4.

Fig. 5 is a side view of the present utility model, shows by becoming the tilting screw shape to be located at alar part on the cylindrical screw rod sidewall to revolve with tap bolt and be locked in the situation of cutting reaming on the plane skylight.

Fig. 6 is a side view of the present utility model, shows by alar part to revolve the situation that is locked in cutting formation one circular reaming on the plane skylight with tap bolt.

The number in the figure explanation:

＜prior art 〉

10 tap bolts

11 screw rods

12 heads

13 cutting ends

14 alar parts

15 hypotenuses

16 blades

20 anti-drain gaskets

30 plane skylights

31 circular reamings

40 skeletons

＜the utility model 〉

50 tap bolts

51 screw rods

52 heads

53 cutting ends

54 alar parts

55 hypotenuses

56 blades

60 anti-drain gaskets

70 plane skylights

71 circular reamings

80 skeletons

Embodiment

As shown in Figure 4, tap bolt 50 in the present embodiment, include a screw rod 51, screw rod 51 1 ends form a head 52, and head 52 bottom surfaces cover is lined with an anti-drain gasket 60, and the other end of screw rod 51 forms a cutting end 53, and be formed with several alar parts 54 near head 52 places in screw rod 51, and making alar part 14 lateral margins form a convergent hypotenuse 55 from top to bottom, this hypotenuse 55 is provided with one day tap bolt and 50 revolves the blade 56 of lock direction, shown in Fig. 4 A.

Above-described structure and existing tap bolt are similar, and since be not the utility model be the technological means and the structure characteristics place thereof of achieving the goal and being used, so no longer further give unnecessary details at this; Technical characteristics of the present utility model is:

To shown in Figure 6, these several alar parts 54 are into the tilting screw shape to be located on cylindrical screw rod 51 sidewalls, and makes set hypotenuse 55 of alar part 54 lateral margins and blade 56 also be the tilting screw shape thereupon as Fig. 4.

By above-mentioned structure, as Fig. 5 and shown in Figure 6, when this tap bolt 50 passed through plane skylight 70 and lock is established when being fixed on the skeleton 80, can revolve lock with tap bolt 50 by the hypotenuse 55 set blades 56 of alar part 54 and on plane skylight 70 cutting form a circular reaming 71 (as shown in Figure 6); Simultaneously, forming in circular reaming 71 processes by blade 56 cutting plane skylights 70, can be by the setting of 54 one-tenth tilting screw shapes of alar part, make blade 56 lock the cutting plane skylight 70 of taking advantage of a situation with revolving of tap bolt 50, to reduce the stress that alar part 54 and blade 56 are born in cutting process, and can avoid the torsional deformation of wearing and tearing passivation, fracture or the alar part 54 of blade 56, and then reach and help carrying out more smoothly of ream operation and screw lock operation.

From the above and embodiment shown in the drawings as can be known, the utility model is the tilting screw shape by alar part 54 and hypotenuse 55 set blades 56 thereof and is located on cylindrical screw rod 51 sidewalls, it forms the circular reaming 71 except revolving to be locked in to cut on the plane skylight 70 with tap bolt 50 equally, can reduce simultaneously the stress that alar part 54 and blade 56 are born in cutting process, and avoid the torsional deformation of wearing and tearing passivation, fracture or the alar part 54 of blade 56, and then reach and help carrying out more smoothly of ream operation and screw lock operation; Therefore, the utility model is compared with existing tap bolt really has obvious improvement, and its structure is also really unprecedented, meets the important document of novel patent, so propose patent application in accordance with the law.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. an improved tap bolt is constructed, include a screw rod, screw rod one end forms a head, head bottom surface cover is lined with an anti-drain gasket, the other end of screw rod forms a cutting end, screw rod is formed with several alar parts near the head place, and the alar part lateral margin forms a convergent hypotenuse from top to bottom, and this hypotenuse is provided with one day tap bolt and revolves the blade of lock direction; It is characterized in that:

These several alar parts become the tilting screw shape to be located on the cylindrical screw rod sidewall, and make set hypotenuse of alar part lateral margin and blade also be the tilting screw shape thereupon.