CN2269490Y - Screw for fixing metal plate on wood plate - Google Patents

Abstract

The utility model relates to a screw for fixing a metal plate on a wood plate, comprising a screw head, a rod body extending on one end of the screw head, a tapping end formed on the front end of the rod and gradually reduced to small. The outer edge surface of the rod body is provided with a first screw thread and a second screw thread. The first screw thread is stretched along the screw head of the rod body from the tapping end in the coiled coil manner until the first screw thread is stretched to the position with a section of distance with the screw head. The screw pitch of the second screw thread is 2 times screw pitch than the first screw thread. The second screw thread is stretched below the screw head from the end of the first screw thread along the rod body towards the direction of the screw head; the other proposal is that the screw pitch of the second screw thread is the same with that of the first screw thread. The second screw thread is spaced with the first screw thread to be stretched below the screw head.

Description

Sheet metal is fastened on screw on the plank

The utility model relates to a kind of being used for sheet metal is fastened on screw on the plank, particularly relates to a kind of spiral shell screw of solid time of saving.

Because having no longer included reserving hole, present produced sheet metal comes to pierce for screw, therefore produced and be used for sheet metal is fastened on screw on the plank, its main effect is can attack earlier to wear sheet metal, be screwed into the plank at sheet metal rear subsequently again, sheet metal is locked securely on batten, lathing or any timber object; When reality is used, generally be used in and attack the screw of wearing sheet metal and can reach and attack the purpose of wearing sheet metal with fine thread (the less screw thread of pitch just), be used to attack the screw of wearing plank and can reach the solid purpose of quick spiral shell with coarse-pitch thread (the bigger screw thread of pitch just), but be used for sheet metal is fastened on screw on the plank in the past, its screw thread only has single pitch, when making this screw want to reach to attack earlier that wearing sheet metal is screwed in the plank again, can because can't the suitable metal plate or plank in the middle of wherein a kind of material, make this screw increase relatively in attacking the solid time of spiral shell of wearing sheet metal or being screwed in the plank.

In addition, in No. the 4653244th, U. S. Patent, be to disclose a kind of screw with screw thread of two groups of different conditions, these two groups of screw threads have different pitch respectively, with different directions to spiral shell head steering wheel around, the screw with this shaping structures can only be used for wallboard (wallborad) is fastened on batten or the wooden unit, can't be used for sheet metal is fastened on the plank.

The purpose of this utility model is to provide high being used for of the solid efficient of a kind of spiral shell that sheet metal is fastened on screw on the plank, can reach and save the spiral shell effect of solid time.

Of the present utility model being characterised in that: the body of rod outer edge surface of this screw forms first and second different screw thread of pitch, this first screw thread has than fine pitch, begin to stretch along the direction of shaft from shooting end to the spiral shell head in the mode of coiled coil, also has a segment distance apart from the spiral shell head, the pitch of second screw thread is the twice of first thread pitch, extend to spiral shell head below since first screw tip along the body of rod to the direction of spiral shell head, because the pitch of second screw thread is two times of pitch of first screw thread, so to attack speed when entering plank after wearing sheet metal faster attacking for the utility model, has and save the spiral shell effect of solid time.

The technical solution of the utility model is as follows:

The utility model comprises a spiral shell head, a body of rod that extends the first end of spiral shell with the screw that sheet metal is fastened on the plank, and one is formed at lever front end and the diminishing end of shooting.This body of rod outer edge surface forms first and second screw thread, first screw thread has than fine pitch, begin to stretch along the direction of shaft from shooting end to the spiral shell head in the mode of coiled coil, apart from the spiral shell head one segment distance is arranged, the pitch of second screw thread is the twice of first thread pitch, and be to be stretched over spiral shell head below since the end of first screw thread along the body of rod to the direction of spiral shell head, when shoot end attack in advance wear sheet metal and pierce the plank surface after, in plank, attack the thread groove that carves earlier by first screw thread, pitch is that second screw thread of the first thread pitch twice can be shot in the plank apace along this thread groove, saves the screw solid time of spiral shell.

Another kind of the present utility model is fastened on screw on the plank with sheet metal, comprise a spiral shell head, a body of rod that extends in the first end of spiral shell, lever front end is provided with the diminishing end of shooting, body of rod outer edge surface has first and second different screw thread of pitch, the pitch of first screw thread begins to stretch along the direction of shaft to the spiral shell head in the mode of coiled coil from shooting end, apart from the spiral shell head one segment distance is arranged, and it is characterized in that:

Described second screw thread be from shoot end beginning along the described body of rod be interval in first screw thread towards the steering wheel of spiral shell head around extending to spiral shell head below, and the pitch of second screw thread equates with the pitch of first pitch thread.

Described sheet metal is fastened on screw on the plank, it is characterized in that:

The length that described first screw thread stretches along described body of rod coiling is the 20%-33% of body of rod length.

Described being used for is fastened on screw on the plank with sheet metal, it is characterized in that:

Described first screw thread is to stretch about three weeks along body of rod coiling.

Described being used for is fastened on screw on the plank with sheet metal, it is characterized in that:

Described second screw thread stretched at least three weeks along body of rod coiling.

Describedly sheet metal be fastened on plank tighten up a screw, it is characterized in that:

The length that described first screw thread stretches along body of rod coiling is 25% of body of rod length.

Below by most preferred embodiment and accompanying drawing the utility model is used for the screw of fastening metal plate on plank and is elaborated, in the accompanying drawing:

Fig. 1 is the stereogram of the utility model preferred embodiment.

Fig. 2 is the first user mode exploded view of the utility model preferred embodiment.

Fig. 3 is the second user mode exploded view of the utility model preferred embodiment.

Fig. 4 is the stereogram of another preferred embodiment of the utility model.

Fig. 5 is the first user mode exploded view of another preferred embodiment of the utility model.

Fig. 6 is the second user mode exploded view of another preferred embodiment of the utility model.

As shown in Figure 1, the utility model preferred embodiment is used for that sheet metal is fastened on screw 1 on the plank and comprises that a spiral shell head 10, one extend the body of rod 12 of spiral shell head 10 1 ends and one and be formed at the body of rod 12 front ends and the diminishing end 14 of shooting.Spiral shell head 10 is that a hexagonal spiral shell head (also can use other any head dummys or a word hole in the middle of present embodiment, spiral shell heads such as cross bore), can reverse fastening screw trip bolt 1 for a hexagon wrench (not shown), the body of rod 12 is born on the plank of torsion with the sheet metal rear, shoot end 14 and be used for attacking the plank of wearing sheet metal and contiguous metal plate rear, the outer edge surface of the body of rod 12 forms first screw thread 16 and second screw thread 18, first screw thread 16 has a pitch X, pitch begins to stretch about three weeks along the body of rod 12 to the direction of spiral shell head 10 in the mode of coiled coil from shooting end 14, the pitch of second screw thread 18 is twices (2X) of the pitch of first screw thread 16, and this second be threaded this first screw thread 16 and similarly stretched for three weeks to the direction of spiral shell head 10 along the body of rod 12, more than until spiral shell head 10 belows, the length Y that first screw thread 16 stretches along the body of rod 12 coilings is about the 20%-33% of the body of rod 12 length Z, is the best with 25%.

As Fig. 2, shown in 3, the first user mode exploded view and the second user mode exploded view for the utility model preferred embodiment, when screw 1 with shoot the end 14 attack wear sheet metal 2 and pierce plank 3 surfaces that abut against sheet metal 2 rears after, attack earlier in plank 3 by first screw thread 16 and to carve a thread groove 30, second screw thread 18 can be shot in the plank 3 along screw thread 30, because the pitch of second screw thread 18 (2X) is two ones of pitch X of first screw thread 16, so can shoot in the plank 3 along thread groove 30 apace, reduce screw 1 with the solid time of the solid spiral shell on plank 3 of sheet metal 2 spiral shells, effectively improve the solid efficient of spiral shell of screw 1.

As shown in Figure 4, stereogram for another preferred embodiment of the utility model, cooperate Fig. 5, shown in 6, it is the first user mode exploded view and the second user mode exploded view of another preferred embodiment of the utility model, be used for sheet metal is fastened on screw 5 on the plank, structure is roughly the same with the foregoing description, comprise one and be hexagonal spiral shell head 50, one extends in the body of rod 52 that spiral shell head 50 1 ends and outer edge surface form first screw thread 56 and second screw thread 58, and one be formed at these body of rod 52 front ends and diminishing shoot the end 54, different with the foregoing description is: second screw thread 58 be from shoot end 54 beginnings along the body of rod 52 and at interval first screw thread 56 to the steering wheel of spiral shell head 50 around stretching more than three weeks up to spiral shell head 50 belows, make the pitch L of second screw thread 58 equate that with the pitch M of first screw thread 56 diameter of thread W of second screw thread 58 is slightly larger than the diameter of thread P of first screw thread 56.When screw 5 shoot the end 54 attack wear sheet metal 6 and pierce the plank surface that is adjacent to sheet metal 6 rears after, just can be as shown in Figure 5, first screw thread 56 that forms with the interval of equidistance near tail ends by the body of rod 52 is attacked earlier in plank with 58 whiles of second screw thread and is carved a thread groove 70, make second screw thread 58 in the 3rd week above (A section as shown in Figure 4) also can be along thread groove 70, shoot as shown in Figure 6 in the plank 7, can reach equally the solid effect on plank 7 of sheet metal 6 spiral shells, by the diameter W of second screw thread 58 diameter P greater than first screw thread 56, second screw thread 58 can be shot in the plank 7 along alveolus 70 apace, reduce screw 5 with the solid time of the solid spiral shell on plank 7 of sheet metal 6 spiral shells, reach and improve the solid purpose of screw 5 spiral shells.

Screw of the present utility model and existing screw relatively have following effect:

(1) improve the solid efficient of spiral shell:

The utility model is first thread pitch by the pitch of second screw thread Twice makes and shoots end and abut against the metallic plate rear attacking to wear metallic plate and pierce The plank surface after, attacked earlier in plank by first screw thread and to carve thread groove, Second screw thread just can follow thread groove and shoot more quickly in the plank, reduces Screw is consolidated the time with the spiral shell that metallic plate is screwed on the plank, and the utility model has Effect is only improved the screw thread in the past be used for metallic plate is fastened on the screw on the plank Single pitch is arranged, and improve screw in attacking when wearing metallic plate or being screwed into plank The solid efficient of spiral shell.

(2) applicability is strong:

Because the pitch of second screw thread of the present utility model is first thread pitch Twice, the direction of extension of first screw thread and second screw thread is coiled with helical form The direction of mode along shaft to the spiral shell head stretches, thus both to the spiral shell cephalic disc around Direction be identical, with No. the 4653244th, aforesaid U.S. Patent Two groups of screw threads of screw with the structure difference of different directions to spiral shell head end coiling, By the design of this creation, metallic plate can be locked securely on plank, The advantage that improves the solid efficient of spiral shell is arranged, effectively improve the spiral shell of aforesaid U.S. Patent case Nail can't be used for metal is fastened on shortcoming on the plank, and applicability is good.

In sum, the utility model is used for metallic plate is fastened on the plank Screw can reach simultaneously and improve the good purpose of the solid efficient of spiral shell and applicability.

Claims (6)

1, a kind of sheet metal is fastened on screw on the plank, comprise a spiral shell head, a body of rod that extends in the first end of spiral shell, lever front end is provided with the diminishing end of shooting, body of rod outer edge surface has first and second different screw thread of pitch, the pitch of first screw thread begins to stretch along the direction of shaft to the spiral shell head in the mode of coiled coil from shooting end, apart from the spiral shell head one segment distance is arranged, and it is characterized in that:

The pitch of described second screw thread is the twice of first thread pitch, and second screw thread is that the direction to the spiral shell head stretches since the end of first screw thread along the body of rod, and the coil direction of first and second screw thread is identical.

2, a kind of sheet metal is fastened on screw on the plank, comprise a spiral shell head, a body of rod that extends in the first end of spiral shell, lever front end is provided with the diminishing end of shooting, body of rod outer edge surface has first and second different screw thread of pitch, the pitch of first screw thread begins to stretch along the direction of shaft to the spiral shell head in the mode of coiled coil from shooting end, apart from the spiral shell head one segment distance is arranged, and it is characterized in that:

Described second screw thread be from shoot end beginning along the described body of rod be interval in first screw thread towards the steering wheel of spiral shell head around extending to spiral shell head below, and the pitch of second screw thread equates with the pitch of first pitch thread.

3, according to claim 1 and 2 sheet metal is fastened on screw on the plank, it is characterized in that:

The length that described first screw thread stretches along described body of rod coiling is the 20%-33% of body of rod length.

4, according to claim 1 and 2 being used for is fastened on screw on the plank with sheet metal, it is characterized in that:

Described first screw thread is to stretch about three weeks along body of rod coiling.

5, according to claim 1 and 2 being used for is fastened on screw on the plank with sheet metal, it is characterized in that:

Described second screw thread stretched at least three weeks along body of rod coiling.

6, according to claim 3 sheet metal is fastened on the plank screwing, it is characterized in that:

The length that described first screw thread stretches along body of rod coiling is 25% of body of rod length.

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