CN101332591A

CN101332591A - Tooth shaped structure of screwing tool

Info

Publication number: CN101332591A
Application number: CNA2007100577343A
Authority: CN
Inventors: 谢智庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-25
Filing date: 2007-06-25
Publication date: 2008-12-31
Anticipated expiration: 2027-06-25
Also published as: CN101332591B

Abstract

The invention discloses a tooth-shaped structure of a bolt fixing tool. The tooth-shaped structure comprises a drive part, a looping part is concavely arranged inside the drive part; the inner periphery of the looping part is a hollow structure and is approximately a polygonal structure, the intersectional angle between edges of the polygonal structure of the looping part are respectively provided with an escape groove, the escape groove is a recessed arc structure, an opening of the escape groove and an opening of the adjacent escape groove take on a straight edge, the straight edge is a lank line section; a top surface is respectively arranged at the center of the straight edges between two adjacent escape grooves, the top surface is in a planar straight line section structure, the top surface is arranged at the straight edge between the two adjacent escape grooves and is superposed on the straight edge; a first groove and a second groove are respectively recessed between the escape groove and the top surface, the first groove is closer to the escape groove, the second groove is closer to the top surface, the first and the second grooves are arranged in line symmetry with another first and second grooves; based on the intermediate vertical line of the distance between the two side walls of the escape groove with the arc structure, the first and the second grooves are arranged in line symmetry with another first and second grooves by the central vertical line of the distance between the two side walls of the arc structure of the escape grooves. The tooth-shaped structure of a bolt fixation tool can not cause slipping and bruting of the bolt fixing part resulting from the stress concentration of point contact.

Description

Tooth shaped structure of screwing tool

Technical field

The present invention relates to a kind of tooth shaped structure of screwing tool.

Background technology

Pull the shortcoming that screw tightening skids easily for overcoming, and the screw tightening corner of avoiding wearing and tearing, even further in order to make the cover oral area in order to pull the screw tightening that has worn and torn, each hand-held tool dealer there's no one who doesn't or isn't develops various designs in succession, as No. 093219645 " the anti-impaired sleeve of nut head " patent of the TaiWan, China patent No., it is to be provided with register hole for the nut head engaging in sleeve one end, and the sleeve other end is provided with lock the establish portion engaging drive of connecting hole for hand-held tool, and sleeve can make nut head rotate when driven by hand-held tool, its improvements are: the corner of the corresponding nut head of the register hole of this inside convergent tapering is provided with eluding groove, dodge for the corner of nut head with this eluding groove, and corresponding each the side centre of nut head of register hole is provided with that inwardly to be fastening of convergent gradient tiltedly protruding, and this sleeve is borrowed and fastened oblique convex clip and pull and drive nut head in each side central authorities of nut head and rotate.

This kind existing structure directly fastens in sleeve for avoiding the nut corner, each limit central authorities of eluding groove that contracts in the utilization and nut contact, perhaps can reach in the use avoids the nut corner to crumble, but causing on the contrary with a way of contact touches sleeve and each edge joint of nut, cause the direct wearing and tearing of sleeve, using with the passing of time, sleeve damages easily, if damaging, sleeve cause nut to skid equally, still cause the wearing and tearing of nut corner equally, therefore the existing structure design is desirable not to the utmost, can't reach best preventing and skid, wear and tear, and pull the nut effect of having worn and torn;

Again, there is the dealer to propose another existing structure, the cover oral area of this kind existing structure is to be ccontaining breach and the arc convex surface that spacer ring establishes by several to be constituted, generally speaking the ccontaining breach that overlaps oral area is ccontaining for the corner cut of screw tightening, the comparatively easily crisp corner cut of structure collapses the angle when preventing to pull screw tightening, and the function of arc convex surface mainly is the tangent plane of top-projecting spiro firmware, and reaches screw tightening contact effect.

Yet the base angle of existing its breach of spanner of this kind is slightly to be a right angle setting, obviously the design of this kind overall structure ratio easily causes stress to concentrate, therefore do not have a practicality, moreover the rectangular setting of this kind summary, it equally also can be formed on the difficulty in the manufacturing, that is no matter utilize system of milling or casting, equal easy-formations not.

Summary of the invention

Technical problem underlying to be solved by this invention is, overcomes the above-mentioned defective that prior art exists, and a kind of tooth shaped structure of screwing tool is provided, and can not cause the situation generation that causes screw tightening to skid, beat circle because of the stress of a contact is concentrated.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of tooth shaped structure of screwing tool, it is characterized in that, mainly comprise a drive division, be concaved with a cover oral area in this drive division, wherein: this cover oral area inner peripheral is the structure of hollow, and this cover oral area inner peripheral generally is polygonized structure, the limit of this cover oral area polygonized structure and limit angle of cut place are provided with respectively and keep away groove, this keeps away groove is the arcuate structure that is recessed, and this keeps away the channel opening place and the adjacent channel opening place that keeps away is made as straight flange, and this straight flange is the line segment that is straight; This two adjacent straight flange middle body of keeping away between groove is respectively equipped with end face, and this end face is a plane straightway structure, and this end face is to be located on the straight flange of keeping away between groove and to be overlapped in straight flange; This is kept away between groove and end face is all to be concaved with first groove and second groove, this first groove is the contiguous groove of keeping away, this second groove is more contiguous end face, and this first, second groove is that to organize first, second groove with end face central vertical line and another be the setting of line symmetry status; And this first, second groove is to organize first, second groove and be line and be symmetrical arranged to keep away groove arcuate structure two side spacing central vertical line and another; Be provided with the structure of keeping away groove by this cover oral area, stress concentrates on the screw tightening corner and produces the phenomenon generation of beating circle when avoiding application of force switching screw tightening, and utilizing that this cover oral area is adjacent keeps away the setting that is provided with first groove, second groove and end face between groove, round screw tightening has been beaten in switching smoothly whereby.

Aforesaid tooth shaped structure of screwing tool, wherein the inside bottom spacing of first groove is less than aperture pitch, and the inside bottom spacing of second groove is less than aperture pitch.

Aforesaid tooth shaped structure of screwing tool, wherein the first groove inside bottom spacing central vertical extension line and opening two ends spacing central vertical extension line are to be non-parallel state, and this first groove inside bottom spacing central vertical extension line and opening two ends spacing central vertical extension line also are non-parallel state.

Aforesaid tooth shaped structure of screwing tool, wherein the connection of the central authorities of the first groove madial wall two side ends interplanar distance is to be tilted towards opening by first bottom portion of groove, and the angle of inclination is to keep away the groove direction toward adjacent; It is also to be tilted towards opening by second bottom portion of groove that the central authorities of this second groove madial wall two side ends interplanar distance connect, and the angle of inclination is to tilt toward adjacent first groove direction.

Aforesaid tooth shaped structure of screwing tool, wherein the first slot opening vicinity madial wall of keeping away groove tilts than another madial wall, and the madial wall of contiguous first groove of this second slot opening also tilts than another madial wall.

Aforesaid tooth shaped structure of screwing tool, wherein drive division is located at the drive end of ratchet spanner, and described cover oral area is located at the ratchet inner peripheral of ratchet spanner.

Aforesaid tooth shaped structure of screwing tool, wherein drive division is located at the drive end of sleeve, and this cover oral area is located at sleeve drive division inner peripheral.

Aforesaid tooth shaped structure of screwing tool, wherein drive division is a drive end of being located at double offset ring spanner, and this cover oral area is located at double offset ring spanner drive division inner peripheral.

Aforesaid tooth shaped structure of screwing tool, wherein overlapping oral area is to be hexagonal structure.

Each limit central authorities of eluding groove that contracts in the existing structure utilization and nut contact, and perhaps can reach in the use and avoid the nut corner to crumble, but cause on the contrary with a way of contact sleeve and each edge joint of nut are touched, and cause the direct wearing and tearing of sleeve; The present invention utilizes cover oral area corner to be provided with and keeps away groove, and stress concentrates on the screw tightening corner and produces the phenomenon generation of beating circle when avoiding application of force switching screw tightening; And utilize that this cover oral area is adjacent keeps away the setting that is provided with first groove, second groove and end face between groove, make switching beat round screw tightening whereby, still can first end face, each contact-making surface such as second end face, end face connect to screw tightening and smoothly switching beaten round screw tightening, concentrate the situation generation that does not cause screw tightening to skid, beat circle and can not cause because of the stress of a contact.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the schematic appearance of tooth shaped structure of screwing tool of the present invention.

Fig. 2 to Fig. 5 is the use schematic diagram that the present invention is used for the normal screw tightening of switching.

Fig. 6 to Fig. 9 is that the present invention is used for the use schematic diagram that round screw tightening is beaten in switching slightly.

Figure 10 and Figure 11 are that the present invention is used for the use schematic diagram that round screw tightening is almost beaten in switching.

Figure 12 to Figure 14 is the embodiment schematic diagram that the present invention is used for the solid instrument of all kinds of spiral shells.

The number in the figure explanation:

1---drive division 11---cover oral area

111---keeping away groove 12---straight flange

121---end faces 122---, first groove

123---second grooves 124---, first end face

125---second end face 2---drive end

3---ratchet spanner 31---ratchet

4---sleeve 5---double offset ring spanner

The specific embodiment

The invention relates to a kind of tooth shaped structure of screwing tool, see also shown in Figure 1ly that this kind tooth shaped structure of screwing tool mainly comprises a drive division 1, is to be equipped with a cover oral area 11 in this drive division 1, wherein:

This cover oral area 11 is for to be arranged with in the hollow structure of drive division 1, this cover oral area 11 is generally to be the regular hexagon structure, the angle of cut place on these cover oral area 11 regular hexagon structure limits and limit is provided with respectively and keeps away groove 111, there are six to keep away groove 111 altogether, this keeps away groove 111 is the arcuate structures that are indent, this is kept away groove 111 opening parts and connects and be provided with straight flange 12 with adjacent groove 111 opening parts of keeping away, and this is adjacent, and to keep away straight flange 12 gap lengths of 111 connections of groove all equal, and this keeps away groove 111 for each ccontaining usefulness in corner, corner of screw tightening;

This is adjacent keeps away groove 111 and keeps away 111 of grooves and connect and be made as straight flange 12, adjacent straight flange 12 centre of keeping away 111 connections of groove all are provided with end face 121, this end face 121 is one to be plane straightway structure, and this end face 121 is located at and is adjacently kept away on the straight flange 12 that groove 111 connects and be overlapped in straight flange 12;

This keeps away

groove

111 and 121 structures that all are concaved with two grooves of end face, contiguous this groove of keeping away groove 111 is made as first groove 122, the groove of contiguous this end face 121 is made as second groove 123, the two bottom sides end distance of this first groove 122 is less than opening two side ends interplanar distance, and the inside bottom two side ends interplanar distance of second groove 123 makes this first groove 122 and second groove 123 be smaller than the structure of opening for the bottom also less than opening two side ends interplanar distance; And these first groove, 122 inside bottom spacing central vertical extension lines and opening two ends spacing central vertical line are to be nonparallel heeling condition, make the central authorities of these first groove, 122 madial wall two side ends interplanar distances connect to tilt towards opening, and keep away groove 111 directions towards adjacent by the bottom; And these second groove, 123 inside bottom spacing central vertical extension lines and opening two ends spacing central vertical line are to be nonparallel heeling condition, make that central authorities' connection of these second groove, 123 madial wall two side ends interplanar distances is to be tilted towards opening by the bottom, and tilt towards adjacent first groove, 122 directions; Again, the madial wall that these first groove, 122 opening vicinities are kept away groove 111 tilts than another madial wall, and these second groove, 123 opening vicinities are kept away the madial wall of groove 111 also than another madial wall inclination; Moreover the flat face that this first groove 122 and second groove are 123 is made as second end face 125, and this first groove 122 and the flat face of keeping away 111 of grooves are made as first end face 124;

First groove 122 that this is kept away groove 111 and keeps away 111 of grooves, first end face 124, second groove 123, second end face 125, the relation that is provided with mutually of end face 121 is first end face 124 in regular turn, first groove 122, second end face 125, second groove 123, end face 121, second groove 123, second end face 125, first groove 122, first end face 124, the setting repeated arrangement all same as above that this is kept away groove 111 and keeps away 111 of grooves, this first groove 122 then, second groove 123 is to organize first groove 122 with end face 121 central vertical lines and another, second groove 123 is line and is symmetrical arranged, and this first groove 122, second groove 123 is also to keep away the inboard both ends of the surface spacing central vertical line of groove 111 arcuate structures and another organizes first groove 122, second groove 123 is line and is symmetrical arranged.

Be provided with the structure of keeping away groove 111 by this cover oral area 11, stress concentrates on the screw tightening corner and produces the phenomenon generation of beating circle when avoiding application of force switching screw tightening, and utilize that this cover oral area 11 is adjacent keeps away the setting that 111 of grooves are provided with first groove 122, second groove 123 and end face 121, be able to smooth switching whereby and beaten round screw tightening.

Please refer to Fig. 2 to shown in Figure 5, as shown in Figures 2 and 3, cover oral area 11 of the present invention can be used for corner and does not beat the general complete screw tightening that circle collapses tooth, because cover oral area 11 of the present invention generally is the regular hexagon structure, and the angle of cut place on hexgonal structure limit and limit is provided with and keeps away groove 111, make these all corners of hexagonal screw tightening just can be placed in and keeps away in the groove 111, avoid when spiral shell is consolidated the switching of the instrument application of force, making the excessive corner that causes of screw tightening corner contact strength to beat the round tooth that collapses; When the size of this screw tightening just with overlap oral area 11 when identical, because it is straight flange 12 with keeping away connecting of groove 111 that the present invention keeps away groove 111, so to keep away groove 111 are six limits applyings with the face way of contact and screw tightening with keeping away straight flange 12 that groove 111 connects in order, when user's switching spiral shell is consolidated instrument, be to pull screw tightening with the face contact with six straight flanges 12 of integral body, avoid stress to concentrate on any point, cause cover oral area 11 or screw tightening damage, beat and justify or skid, switching screw tightening so smoothly; Make this screw tightening not identical with cover oral area 11 sizes, and be slightly less than running-on portion 11 approximately, as Fig. 4 and shown in Figure 5, when this screw tightening is subjected to switching, this first end face 124, second end face 125 of keeping away groove 111 diagram lefts still connects the one side to screw tightening, and this to keep away groove 111 right-hand be to connect to the screw tightening another side with end face 121, then the single corner of this screw tightening is to fasten the application of force with two contact-making surfaces, and can avoid stress to converge causing beating the circle phenomenon.

Please refer to Fig. 6 to shown in Figure 9, the present invention also can be used for the switching corner and slightly beats round screw tightening, when screw tightening size with overlap oral area 11 when identical, as Figure 6 and Figure 7, though being collapsed tooth, the corner of this screw tightening beats circle, but six limits of screw tightening still are flat level, and the present invention utilizes this to keep away groove 111 and keeps away 111 straight flanges that connect 12 of groove each limit with face way of contact applying screw tightening when the switching, to avoid skidding or the situation of the screw tightening that continues to wear and tear takes place; If it is not to overlap oral area 11 identical sizes with the present invention that this kind beaten the screw tightening size of circle slightly, and when being slightly less than running-on portion 11 approximately, as Fig. 8 and shown in Figure 9, when the switching of user's application of force, this cover oral area 11 is to be the angle of inclination with screw tightening to contact, with screw tightening wherein a corner be example (as shown in Figure 9), the flat face that utilization of the present invention keeps away second end face 125 of 122 of groove 111 diagram left second grooves 123 and first grooves connects the one side to screw tightening, the another side of this screw tightening be by keep away groove 111 diagram right-hand than long-pending end face 121 connects of large contact surface to, still be two contact-making surfaces during the stressed switching of each corner of screw tightening so, have 12 contact-making surfaces when then this screw tightening integral body is subjected to switching at least, avoid stress to concentrate on wherein, not only slightly beaten the screw tightening of circle whereby fastenedly, cause in the time of more can avoiding switching and skid, and cause screw tightening to continue the frayed situation that collapses tooth.

Please refer to Figure 10 and shown in Figure 11, Figure 10 and Figure 11 are almost beaten round screw tightening fully, this kind screw tightening is because the limit, circle is nearly all beaten at the angle, the plane that causes contacting with cover oral area 11 almost completely disappears, when the switching of user's application of force, single corner with screw tightening is an example, as shown in figure 11, the present invention utilizes this to keep away groove 111 illustrated left sides, right-hand end face 121 connects to screw tightening, then the single corner of this screw tightening still have two contact-making surfaces connect to, and this screw tightening integral body is to have 12 contact-making surfaces when being subjected to switching at least, so can avoid stress to concentrate on any point, and round screw tightening has been beaten in switching smoothly.

Please refer to shown in the embodiment schematic diagram of Figure 12, Figure 13 and Figure 14, tooth shaped structure of screwing tool of the present invention is that the solid instrument of its spiral shell can be all types of hand-held tools, ratchet spanner 3 as Figure 12, this ratchet spanner 3 is to be made as drive end 2 with all establishing screw tightening one end, this drive end 2 is provided with a drive division 1 with the socket screw tightening, this drive division 1 is to be provided with a ratchet 31, and these ratchet 31 inner peripherals are to form cover oral area 11 of the present invention, and so this ratchet spanner 3 can reach above-mentioned identical effect; Again, the solid instrument of spiral shell of the present invention also can be sleeve 4, as shown in figure 13, this sleeve 4 is made as drive end 2 with screw tightening socket one end, this drive end 2 is provided with a drive division 1 with the socket screw tightening, this drive division 1 inner peripheral forms cover oral area 11 of the present invention, and so, this sleeve 4 can reach above-mentioned identical effect; Moreover, the solid instrument of spiral shell of the present invention also can be double offset ring spanner 5, as shown in figure 14, this double offset ring spanner 5 is made as drive end 2 with screw tightening socket one end, this drive end 2 is provided with a drive division 1 with the socket screw tightening, this drive division 1 inner peripheral forms cover oral area 11 of the present invention, and so this double offset ring spanner 5 can reach above-mentioned identical effect.

Claims

1, a kind of tooth shaped structure of screwing tool is characterized in that, mainly comprises a drive division, is concaved with a cover oral area in this drive division, wherein:

This cover oral area inner peripheral is the structure of hollow, and this cover oral area inner peripheral generally is polygonized structure, the limit of this cover oral area polygonized structure and limit angle of cut place are provided with respectively and keep away groove, this keeps away groove is the arcuate structure that is recessed, this keeps away the channel opening place and the adjacent channel opening place that keeps away is made as straight flange, and this straight flange is the line segment that is straight;

This two adjacent straight flange middle body of keeping away between groove is respectively equipped with end face, and this end face is a plane straightway structure, and this end face is to be located on the straight flange of keeping away between groove and to be overlapped in straight flange;

This is kept away between groove and end face is all to be concaved with first groove and second groove, this first groove is the contiguous groove of keeping away, this second groove is more contiguous end face, and this first, second groove is that to organize first, second groove with end face central vertical line and another be the setting of line symmetry status; And this first, second groove is to organize first, second groove and be line and be symmetrical arranged to keep away groove arcuate structure two side spacing central vertical line and another.

2, tooth shaped structure of screwing tool according to claim 1, the inside bottom spacing that it is characterized in that described first groove are less than aperture pitch, and the inside bottom spacing of second groove is less than aperture pitch.

3, tooth shaped structure of screwing tool according to claim 1, it is characterized in that described first groove inside bottom spacing central vertical extension line and opening two ends spacing central vertical extension line are to be non-parallel state, and this first groove inside bottom spacing central vertical extension line and opening two ends spacing central vertical extension line also are non-parallel state.

4, tooth shaped structure of screwing tool according to claim 3 it is characterized in that central authorities' connection of the described first groove madial wall two side ends interplanar distance is to be tilted towards opening by first bottom portion of groove, and the angle of inclination is to keep away the groove direction toward adjacent; It is also to be tilted towards opening by second bottom portion of groove that the central authorities of this second groove madial wall two side ends interplanar distance connect, and the angle of inclination is to tilt toward adjacent first groove direction.

5, tooth shaped structure of screwing tool according to claim 1 it is characterized in that the madial wall that the described first slot opening vicinity is kept away groove tilts than another madial wall, and the madial wall of contiguous first groove of this second slot opening also tilts than another madial wall.

6, tooth shaped structure of screwing tool according to claim 1 it is characterized in that described drive division is located at the drive end of ratchet spanner, and described cover oral area is located at the ratchet inner peripheral of ratchet spanner.

7, tooth shaped structure of screwing tool according to claim 1 it is characterized in that described drive division is located at the drive end of sleeve, and this cover oral area is located at sleeve drive division inner peripheral.

8, tooth shaped structure of screwing tool according to claim 1 it is characterized in that described drive division is a drive end of being located at double offset ring spanner, and this cover oral area is located at double offset ring spanner drive division inner peripheral.

9, tooth shaped structure of screwing tool according to claim 1 is characterized in that described cover oral area is to be hexagonal structure.