CN2168980Y - Bolt for steel plate combination - Google Patents

Abstract

The utility model relates to a screw for steel plate combination. The screw for steel plate combination is provided with a cap head. The annular surface of the cap head is an oblique corrugated shape. The lower side of the cap head is a screw bolt, and a drill bit is extended and arranged. The corrugated surface of the annular surface of the cap head is in a helical shape. A concave part is arranged on a middle hole edge of a Warcy sheet which is provided with a conical annular sheet body. When the screw for steel plate combination is locked, the screw for steel plate combination is easily sheathed together with a sleeve, an oblique phenomenon can not occur, and a steel sheet can be rapidly aligned and locked on a steel frame. The intensity of the screw for steel plate combination is augmented, the screw for steel plate combination is convenient to operate, and the screw for steel plate combination is not easy to disassemble. The screw for steel plate combination has favorable anti-theft function.

Description

Bolt for steel plate combination

The utility model relates to a kind of threaded screw.

An existing general rubber sheet gasket and the washer sheet of cooperating of steel screw that is used to lock steel plate locked, its shortcoming is because of being exposed to for a long time in the atmosphere, suffer erosions such as rainwater, dew, so oxidation corrosion very easily takes place, the oxide of these corrosions can cause taking place corrosion again after flowing on the steel plate, cause the very fast breakage of steel plate.

Shortcoming at above-mentioned screw, existing a kind of screw of imitating the band plastic cement coating cap head of hexagonal nuts head screw shape, but because of the cap head is a hexagon, so when coming fit to lock the screw of steelframe with locking sleeve, because external diameter some small clearance still of sleeve endoporus and cap head, therefore the uneven screw that causes is locked the phenomenon that the back forms the screw deflection in the time of can be because of builder's operation by human hand, the builder locks after must dismantling again again, not only cause construction speed to delay, and in a single day it is sealed to let alone the screw deflection, and then screw certainly will can't be locked fully, and rainwater infiltrates easily, as typhoon, then cause damage easily.

The purpose of this utility model be to provide a kind of when locking easily with the sleeve fit, and skewness can not take place, can align the steel plate that lock onto on the steelframe and be difficult for being disassembled to steel plate rapidly and make up and use screw.

The utility model band cap head, the anchor ring of cap head is oblique corrugated, cap head below is one section double-screw bolt, and extends a drill bit.

Screw is provided with the washer sheet, and said washer sheet is the tapered annular lamellar body, is preferably in mesopore sideband reentrant part.

The shape design in the shape of a spiral of the ripple of cap headring face, its corrugated is enlarged downwards gradually by the cap crown.

Fig. 1 is an exploded view of the present utility model.

Fig. 2 to Fig. 4 is use embodiment of the present utility model.

Fig. 5 to Fig. 7 is the comparison diagram of the utility model and existing screw.

Below in conjunction with accompanying drawing concrete scheme of the present utility model, using method and outstanding effect thereof are described further.

At first consult Fig. 1, the said screw of the utility model (1) has a bigger cap head (11), the anchor ring of this cap head (12) is oblique ripple (121) shape, it under the cap head one section double-screw bolt (13), and extend a drill bit (14), but sheathed washer sheet (2) and the ring apron (3) of butt one at the bottom of its cap head.

Wherein, to shown in Figure 4, washer sheet (2) is to be designed to therein that limit, hole (21) is the tapered annular lamellar body of reentrant part (22) as Fig. 2.And the suitable double-screw bolt (13) that can be inserted in screw of cushion rubber (3) is located, and is principle with the reentrant part (22) that does not exceed washer sheet (2).

When the utility model uses, when desiring when steelframe (6) is gone up laying steel plate (5), can utilize a sleeve (4) that has equidirectional oblique ripple equally to be enclosed within on the cap head (11) of screw, this moment, the washer sheet was inserted in the double-screw bolt (13) of screw earlier, and ring apron (3) is inserted in, then, drill bit (14) end of screw is aimed at the fixing position of steel plate desire, because at present all with electronic or pneumatic tool construction, so when builder's startup instrument makes sleeve (4) rotation, utilize the sharp sword termination of spiral dirll can bore steel plate and pierce steelframe, nationality double-screw bolt (13) locking subsequently.

Fashionable when cap head of the present utility model and jacket casing, because both are the inclined-plane corrugated design, therefore when the builder arbitrarily inserts the cap head in the sleeve, can slip into fit easily.Especially when the builder starts turning tool and makes sleeve do clockwise rotation, crest (411) between the ripple of sleeve inner (41) forms a linear pressure, the corrugated (12) that is pushed against the cap head is located, because of its point of contact very low, make sleeve cause idle running, at an easy rate locking nut with cap head place.Simultaneously, the inclined-plane ripple system of coping screw cap head is shape slightly in the shape of a spiral, and increase anchor ring gradually to the double-screw bolt direction, therefore when sleeve fit screw rotates, the concentricity of its rotation is very correct, when screw is firmly pierced steelframe and locks, the phenomenon of deflection can not take place, then the screw cap head can be impartially locked near closing to steel plate, and the space can not take place between steel plate.

In addition, because the utility model is when being used for locking steel plate, can lock very tightly, and oblique ripple be counterclockwise around form under, when any human desires is dismantled this screw with sleeve, the situation of sliding in sleeve and cap head place will take place, and basic being difficult to disassembles again, can bring into play antitheft function.And when screwing tight, because the whole all tablings of the endoporus of sleeve and cap head, also be that both are the whole phase blocking of each oblique ripple anchor ring, when operator's application of force is rotated, unless will carry on the sleeve, and make both the identical gap that occurs, otherwise the oblique ripple of cap head must not be impaired because of screwing tight, therefore the effect that blocking screws tight can be do not lost, certain, the firm effect that screws togather can be reached.

The utility model also can cooperate washer sheet (2) and ring apron (3) to lock, because the external diameter of cushion rubber only reaches in the reentrant part (22) on washer sheet mesopore limit, so the cap head (11) at screw compresses the washer sheet, make and push against behind steel plate (5), can simultaneously cushion rubber be oppressed, contact with doing closely between steel plate, then can reach the function of waterproof.Especially can directly push against on the steel plate face because of the washer sheet, make all nonelastic saying between screw and washer sheet and steel plate, when running into high wind and blow, steel plate just can not rock, the sound of also can not rattling, this is with after existing screw cooperates the washer sheet, before being located at steel plate with an annular rubber cushion pad again, behind washer sheet compressing rubber cushion, the equal pressurized of rubber cushion and outwards expanding protrudes, thus still leave the elastic space of rubber cushion between steel plate and screw, when running into high wind and blow, steel plate will ring along with wind table tennis, also damages steel plate easily.

In addition, as shown in Figure 5, the hexagon cap head of existing screw is when screwing togather, its lifting surface area is 1/3rd of each hex surface outside, and main force bearing point is at the angle at six angles end, because the internal diameter of sleeve endoporus all can be slightly larger than its external diameter, therefore be structure just like Fig. 6, though existing whole vertical surface phase blocking, and more aforementioned hexagon increases lifting surface area, because of its inclined design low outside You Nei Gao, it is outer big trapezoidal in little making stress surface, when application of force turnbarrel, its main stressed place concentrates on the bottom surface than the outside, also makes this end more impaired.On the contrary, as shown in Figure 7, this programme adopts the design of oblique ripple, its lifting surface area is that one of whole oblique ripple anchor ring front side demifacet is long-pending, and it is for oblique and by little and big moulding, adds and thinks cambered surface, therefore when fit is exerted pressure rotation, whole lifting surface area all on average bears pressure, and then incident that can unbalance stress is given birth to, and not only itself intensity increases and skewness can not take place during locking.

In sum, the utility model utilization designs oblique ripple at cap head place, make fit with sleeve be easy to, convenient, when locking, can not slide between sleeve and cap head yet, more smooth and easy when the builder is operated, very big practical effect also takes place in its design not quick detachable and that can compress steel plate in the steel plate combination again.

Claims (4)

1, screw is used in a kind of steel plate combination, has the cap head, and the anchor ring that it is characterized in that the cap head is oblique corrugated, and cap head below is one section double-screw bolt, and extends a drill bit.

2, screw is used in steel plate combination as claimed in claim 1, it is characterized in that being provided with the washer sheet, and said washer sheet is the tapered annular lamellar body.

3, screw is used in steel plate combination as claimed in claim 2, it is characterized in that establishing reentrant part on the mesopore limit of washer sheet.

4, screw use in steel plate as claimed in claim 1 combination, and the ripple that it is characterized in that cap headring face is shape in the shape of a spiral, and its corrugated is by the expansion gradually downwards of the cap crown.

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