CN201669641U

CN201669641U - Center-positioning anti-slip screwdriver and line type screw

Info

Publication number: CN201669641U
Application number: CN2010201948085U
Authority: CN
Inventors: 瞿志海
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-10
Filing date: 2010-05-10
Publication date: 2010-12-15
Anticipated expiration: 2020-05-10

Abstract

The utility model relates to a center-positioning non-slip screwdriver and a line type screw, belonging to hardware. The center-positioning non-slip screwdriver is characterized in that a bulge (21) or a groove (22) are arranged on the axis of the end surface of a tool bit and are matched with a concave pit (41) or a lug boss (42) at the center of an upper notch (4) of the screw in a sliding way. The line type screw is characterized in that the notch (4) is arranged at the head of the screw, and the concave pit (41) or the lug boss (42) are arranged on the axis of the bottom of the notch (4). When the screw is tightened, the screwdriver can conveniently position, reliably rotate, does not slip, and has simple structure, good generality and long service life. The screwdriver not only has the reliable torque force of a line type screwdriver, but also has the positioning function of a Philip screwdriver. The slot type screw has convenient processing, accurate centering positioning, reliable connection and good non-slip effect.

Description

Anti-skidding screwdriver of a kind of centralized positioning and in-line screw

Technical field

The utility model relates to a kind of screwdriver, also relates to a kind of screw, relates in particular to anti-skidding screwdriver of a kind of centralized positioning and in-line screw, belongs to hardware ﹠ tools.

Background technology

At present, tradition screwdriver commonly used has two kinds: the one, and Flathead screwdriver.The advantage of this screwdriver is: active force is just horizontal, and afterburning convenient, strength is big; Shortcoming is: because screwdriver does not have fixing position in the fluting of screw, the center is often departed from the position of screwdriver and screw, skids easily, even breaks away from; The 2nd, Philips screwdriver.Its advantage is that the location is convenient; Shortcoming is: because of including the strength of both direction, strength that pressure presses down and torsion Power of Spin, firmly inconvenience.Skid easily or damaged screws or screwdriver.

Chinese patent publication number: CN952454572, open day: on December 18th, 1996, utility model title " the anti-skidding screwdriver of bayonet socket ", proposed to be shaped on boss at cutter head end face left and right edges place, the middle technical scheme that constitutes bayonet socket, during use, boss is stuck in screw notch two ends, thereby plays anti-skidding effect, improved operating efficiency, and easy damaged staff's finger not, in addition, the boss of cutter head two edges can be used on this head dazzling, nail in order to wood screw, can play anti-skidding effect, safety equally when tightening wood screw, convenient, fast, has stronger practicality.But because the boss on cutter head both sides needs to be provided with respectively according to the specification of screw, the specifications and models of screwdriver are increased, also cause the versatility of screwdriver to reduce.Chinese patent publication number: CN032649061, open day: on August 11st, 2004, utility model title " screwdriver head of architecture advances " proposed the technical scheme that blade one section is made the type anti-slip particles that rises at the screwdriver head front end.This anti-slip particles is laid in the blade that rises of screwdriver head with irregular mode, so as to can effectively promoting its frictional force and anti-slip effect in the use, and can prevent obscission.But anti-slip particles setting can make screwdriver head be difficult to go deep into the notch of screw, and the anti-slip particles size is less, and very easily wearing and tearing in the work cause screwdriver head on-slip to be lost efficacy, and service life is lower.Chinese patent publication number: CN20103696Y, open day: on January 30th, 2008, utility model title " anti-stripped thread screw and the novel screwdriver that cooperates with it ", having proposed described screw ailhead surface has part outstanding or depression, and there is the technical scheme of the outstanding and depression that is complementary with screw on described driver bit surface.Thereby the increase torsional moment makes screwdriver increase the twisting resistance of anti-stripped thread screw, and the contact surface that increases screw and novel screwdriver simultaneously makes screw stressed more even.But the setting of outstanding or sunk part still has some defectives, the one, because the area of ailhead and driver bit end face is less, its size outstanding or sunk part is all less, the effect that torsional moment increases is not too obvious, the 2nd, can bring many inconvenience to the use of screw and screwdriver, for screw, screw tends to ailhead is carried out hammering in use, this will be directly its surperficial ledge distortion or damage, and then influence the use of screwdriver; For screwdriver, outstanding or the sunk part of relative set is not easy to the centering location of screwdriver and screw, the specificity of screwdriver is strong, being unsuitable for plain screw uses, also cause the contact area of this screwdriver and plain screw to reduce greatly, very easily damage plain screw or when screwing, skid poor reliability, the versatility of screwdriver reduces, and can't satisfy the needs that screw of plain screw simultaneously.

Summary of the invention

First purpose of the present utility model be overcome existing screwdriver centering and skidproof effect not ideal enough, versatility and dependability are poor, fragile, defective and deficiency that service life is short, provide a kind of centering convenient, good antiskid effect, versatility and dependability are higher, not fragile, the anti-skidding screwdriver of the centralized positioning of long service life.

Second purpose of the present utility model is to overcome existing in-line screw, centering and anti-skidding skidproof effect are not ideal enough, versatility and dependability are poor, fragile, defective and deficiency that service life is short provide a kind of centering convenient, good antiskid effect, versatility and dependability are higher, and be not fragile, the in-line screw of long service life.

For realizing above-mentioned first purpose, technical solution of the present utility model is: the anti-skidding screwdriver of a kind of centralized positioning, comprise knife bar and cutter head, the axle center of described cutter head end face is provided with projection or groove, and the pit at notch center or boss are slidingly matched on described projection or groove and the screw.

When described screw was the in-line screw, described projection was arranged in the chisel edge mouth end face of cutter head in the heart, and perhaps described groove is opened in the chisel edge mouth of cutter head in the heart;

When described screw was the universal screw of a word cross, described projection was arranged in the chisel edge mouth end face of cutter head in the heart, and the declivous cutting edge on the cutter head is connected with the end of projection.

When described screw was the in-line screw, described projection was cylindricality or wedge shape, and perhaps described groove is V-shaped groove or straight trough.

For realizing above-mentioned second purpose, technical solution of the present utility model is: a kind of in-line screw, be provided with notch at the head of screw, and the bottom land axle center of described notch is provided with pit.

Described pit is cylindrical hole or V-shaped groove.

For realizing above-mentioned second purpose, another technical solution of the present utility model is: a kind of in-line screw, be provided with notch at the head of screw, and the groove on the bottom land axle center of described notch on the corresponding driver bit is provided with boss.

Described boss is wedge shape or four prism type piece, and the dual-side of wedge shape or four prism type piece and the cell wall of notch fuse.

Screw described in the utility model also comprises common described screw, and the end of screw thread is cone or cylinder on the promptly described screw.

Compared with prior art, the beneficial effects of the utility model are: 1. anti-skidding screwdriver of centralized positioning and in-line screw cooperatively interact, when tightening screw, can conveniently locate, can rotate reliably again, non-slip, and it is simple in structure, versatility is good, and long service life particularly is provided with projection or groove as positioner on the basis of Flathead screwdriver, make screwdriver both have the reliable torsion of Flathead screwdriver, have the positioning function of Philips screwdriver again.2. the in-line screw is easy to process, the centering accurate positioning, head of screw is hit boss and the pit hammer in the Shi Buhui damage notch, and it is firm to connect, good antiskid effect.

Description of drawings

Fig. 1 is the structural representation of the existing universal screw 31 of a word cross;

Fig. 2 is first kind of structural representation of the utility model screwdriver;

Fig. 3 is first kind of structural representation of the utility model yi word pattern screw 3;

Fig. 4 is second kind of structural representation of the utility model screwdriver;

Fig. 5 is second kind of structural representation of the utility model yi word pattern screw 3;

Fig. 6 is the third structural representation of the utility model screwdriver.

Among the figure: knife bar 1, cutter head 2, projection 21, groove 22, chisel edge mouth 23, declivous cutting edge 24, yi word pattern screw 3, cross screw 31, notch 4, pit 41, boss 42.

The specific embodiment

Below in conjunction with the description of drawings and the specific embodiment the utility model is described in further detail:

Referring to Fig. 1 to Fig. 6, the anti-skidding screwdriver of a kind of centralized positioning of the present utility model, comprise knife bar 1 and cutter head 2, pit 41 or boss 42 that the axle center of described cutter head 2 end faces is provided with notch 4 centers on projection 21 or groove 22, described protruding 21 or groove 22 and the screw are slidingly matched.

Among Fig. 1, screw still adopts traditional universal screw 31 of a word cross.When described screw was the universal screw 31 of a word cross, corresponding screwdriver structure can be as shown in Figure 2, and described protruding 21 are arranged in chisel edge mouth 23 end faces of cutter head 2 in the heart, and the declivous cutting edge on the cutter head 2 24 is connected with protruding 21 end.Be equivalent to increase a paxilla that can be slidingly matched with the universal screw 31 center pits 41 of a word cross at the center, end of cutter head 2.Because the space of pit 41 is bigger on the universal screw of a word cross 31 centers, make that the volume at protruding 21 positions can make bigger on the utility model screwdriver, make the cutter head 2 and notch 4 contact-making surfaces of screw increase greatly, improve the engagement effect between universal screw 31 notches of a cutter head 2 and a word cross, strengthened the anti-skidding and anti-wear property when screwdriver uses.

Fig. 3, among Fig. 5, screw adopts in-line screw 3, and has manufactured a boss 42 or pit 41 at the center of notch 4.At this moment, corresponding screwdriver structure can be as Fig. 4 and shown in Figure 6, and described groove 22 is opened in the chisel edge mouth 23 of cutter head 2 in the heart, and perhaps described protruding 21 are arranged in the end face of cutter head 2 chisel edge mouths 23 in the heart.

Among Fig. 4, the above groove 22 of cutter head 2 is a V-shaped groove, also can be straight trough.

Among Fig. 2, Fig. 6, the above projection 21 of cutter head 2 is a wedge shape, also can be other shape, and as cylindricality, tapered etc., screw grooves shape correspondingly also will be complementary with it.

Referring to Fig. 3, a kind of in-line screw is provided with notch 4 at the head of screw, and the groove 22 on the bottom land axle center of described notch 4 on the corresponding driver bit 2 is provided with boss 42.Described boss 42 is a wedge shape, also can be the four prism type piece, and the cell wall of the dual-side of wedge shape or four prism type piece and notch 4 fuses, and promptly forms boss 42 in the cell body of notch 4.This in-line screw 3 can with Fig. 4 in have a groove 22 at chisel edge mouth 23 centers of cutter head 2 screwdriver be used, it is accurate both can to have guaranteed that cutter head 2 was located in screw notch 4, can guarantee that also boss 42 is meshed with groove 22, prevent to slide mutually between the notch 4 on cutter head 2 and the in-line screw 3.

Referring to Fig. 5, a kind of in-line screw is provided with notch 4 at the head of screw, and the bottom land axle center of described notch 4 is provided with pit 41.Described pit 41 is cylindrical hole or V-shaped groove.This in-line screw 3 can with Fig. 6 in be shaped on projection 21 at chisel edge mouth 23 centers of cutter head 2 screwdriver be used.It is accurate to guarantee simultaneously that cutter head 2 is located in screw notch 4, can guarantee that also boss 42 is meshed with groove 22, prevents to slide mutually between the notch 4 on cutter head 2 and the in-line screw 3.

For in-line screw 3 structures of having manufactured a pit 41 among Fig. 5 at the center of notch 4, still can cooperate to screw operation with common Flathead screwdriver.

The utility model can be applicable to the screwdriver and the yi word pattern screw of any kind of; no matter screwdriver is a replaceable driver bit or incorporate; no matter also the form of its handle how; specification size regardless of the yi word pattern screw; no matter also be yi word pattern screw or yi word pattern screw; as long as meet feature as herein described, all at the row of the claim protection of utility model.

Claims

1. anti-skidding screwdriver of centralized positioning, comprise knife bar (1) and cutter head (2), it is characterized in that: the axle center of described cutter head (2) end face is provided with projection (21) or groove (22), and the pit (41) or the boss (42) at notch (4) center are slidingly matched on described projection (21) or groove (22) and the screw.

2. the anti-skidding screwdriver of a kind of centralized positioning according to claim 1 is characterized in that:

When described screw was in-line screw (3), described projection (21) was arranged in chisel edge mouth (23) end face of cutter head (2) in the heart, and perhaps described groove (22) is opened in the chisel edge mouth (23) of cutter head (2) in the heart;

When described screw was the universal screw of a word cross (31), described projection (21) was arranged in chisel edge mouth (23) end face of cutter head (2) in the heart, and the declivous cutting edge (24) on the cutter head (2) is connected with the end of projection (21).

3. the anti-skidding screwdriver of a kind of centralized positioning according to claim 2 is characterized in that: when described screw was in-line screw (3), described projection (21) was cylindricality or wedge shape, and perhaps described groove (22) is V-shaped groove or straight trough.

4. in-line screw is provided with notch (4) at the head of screw, and it is characterized in that: the bottom land axle center of described notch (4) is provided with pit (41).

5. a kind of in-line screw according to claim 4 is characterized in that: described pit (41) is cylindrical hole or V-shaped groove.

6. in-line screw is provided with notch (4) at the head of screw, and it is characterized in that: the groove (22) on the bottom land axle center of described notch (4) on the corresponding driver bit (2) is provided with boss (42).

7. a kind of in-line screw according to claim 6 is characterized in that: described boss (42) is wedge shape or four prism type piece, and the cell wall of the dual-side of wedge shape or four prism type piece and notch (4) fuses.