TW412464B - Driver head structure of a cross type screw driver - Google Patents

Abstract

The objective of this invention to provide a convenient and innovative driver head structure of a cross type screw driver. The driver head structure of the cross type screw driver includes four blades 2 radially protruding from a front end of the driver stem 1. The four blades 2 comprises a surface orthogonal to the axis line L of the driver head of the driver stem 1 as boundary, the front end side having the first blade 2a which the distance to the axis line L of the driver head reduces while approaching the front end side, and the base side having the second blade 2b which the distant to the axis line L of the driver head reduces while approaching the front end and the front end surface 2b being formed as part of the outer side of the said orthogonal surface is exposed.

Description

Patent application No. 8812231 Patent correction in March W of the year 2006 Correction of the Chinese manual page Correction of the Republic of China in March 1990 A / V. Description of the invention (2

[In order to understand the following, the cutting head of the reeling knife 1 is more forward, and the base becomes smaller, and the surface 2 b 'and 4 blades and 2 pairs of blade heads determine the problem, refer to the present invention has a head structure shaft core wire On the side and the end side, the method of the knife of the cross which is the second and the above is attached. The cross shown in the figure is protruded, and its special L orthogonal cutter head shaft system forms an intersecting face edge 2 b. The gist of the present invention. The structure of the screw head of the type screwdriver is the cross-shaped screw sign of the four blade edges 2 that are radiating on the blade rod. The four blade edges 2 are formed by the surface F of the blade rod as the boundary and constitute the front side. The first blade 2 a having a smaller distance from the core wire L is formed so that a portion outside the distance F between the front end side and the core wire L of the cutter head shaft is exposed to the front end. The structure of the blade of the knife, the four blades are based on the first face F orthogonal to the core axis L of the head as the realm, printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, forming the front side, and the front side is formed toward the front side. The first blade 2 a ′ where the distance between the head axis L is smaller, and the base end side is formed so that the distance between the front end side and the tool head axis L becomes smaller, and the aforementioned orthogonal first surface? !! A part of the outer edge of the second edge 2 b is formed so as to expose the front end surface 2 b /, and a base constituting the second edge 2 b is connected to the base end side of the second edge 2 b. The end f is defined by the second surface F 2 orthogonal to the cutter head shaft core line L of the cutter head rod 1, and the distance from the front end side to the cutter head shaft core line L becomes smaller, and the aforementioned orthogonality is continuously connected. A part of the second surface F 2 outside is formed with a cross-shaped screwdriver head structure characterized by the third edge 2 c exposing the front end surface 2 c ′. Moreover, the structure of the bit of a cross-type screwdriver is a cross-shaped IJ 1 having four blades 2 protruding radially from the front end of the bit head 1 — "! ----- Order ------ I--line-'Please read the notes on the back before filling out this page} This paper size is applicable to the national standard (CNS) A4 specification (2) 0 X 297 mm '> _- 5- 412464 8 7 137 V. Description of the invention 6) [Technical field to which the hairpin belongs] The invention of wood relates to the structure of the blade of a Phillips screwdriver. [Problems to be Solved by the Conventional Technology and Invention] The four blades formed by the tip of the common (well-known) Phillips screwdriver 'Prison Knife Head' that has been proposed in the past are designed to conform to specifications (for example, ' JIS standards No. 1, No. 2, No. 3, etc.) The inserts of the small screws or screws formed by the screws are consistent, so they can only turn well with a screwdriver. Disadvantages of embedding small boiling screws or screws. For example, when a small knife is inserted into a groove and a blade with a large blade with a different size is inserted into the lilj, it will not be able to obtain sufficient torque to turn it. The small screw or screw will not turn well. In addition, the prisoner's blade is not completely inserted into the blade's embedded groove, and sometimes the force-head's embedded groove will collapse. On the contrary, when the large blade's embedded groove causes a blade with a small size and a small blade to be inserted, The blade inserting groove cannot bite well, the small screws and screws cannot be set to rotate, and 'sometimes you will insert the blade :: 1 in the blade inserting into the groove of the blade, and the blade inserts into the groove and collapses. Therefore, in the past, the operator must prepare the most commonly used screwdrivers and bismuth operations-and confirm whether the size of the blade of the screwdriver fits into the groove of the blade, and use a screwdriver separately. The present invention is to provide a structure of a bit of a Phillips screwdriver to solve the above problems. The size of this paper is suitable for China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)

Equipment -------- Order · ------ I Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy -4- A7 B7 412464 V. Description of Invention 6) [Methods for solving problems] The following, The essentials of the wood invention will be described with reference to the drawings. Regarding the structure of the Phillips screwdriver bit of the present hairpin, the front end portion B of the lance bar 1 has a cruciform screwdriver structure with four blades 2 protruding radially, which is characterized by the four The blade edge 2 is based on the orthogonality of the blade core axis L of the power head rod 1 and F as the boundary, and the front end side becomes the first edge 2 a where the distance between the front end side and the core axis L of the blade is reduced. In addition, the base end side is formed so that the distance between the front end side and the core axis L of the cutter head becomes smaller, 1 a part of the above-mentioned stop and the part outside F is formed to expose the front end and the second edge 2 bz 2 b. In addition, the front end of the scoring blade head rod i has a blade structure of a ten-ning screwdriver that is protruded in a radial shape with four blades 2. The four blade blades 2 are aligned with the core axis L of the blade head shaft 1. The orthogonal plane F is taken as the realm, and the front end side is formed. As the distance between the front end side and the core axis L of the cutter head becomes smaller, the blade 2 a, and 1L, the base end side, is formed more and more. The distance between the front end side and the cutter head_core L becomes smaller, and a part of the outer side of the aforementioned orthogonal surface F is formed to expose the front end and the second edge 2 b of 2 b >, more jj., About On the side of the second end of the second blade 2 b, a base end constituting the second blade 2 b is connected in succession, and the second surface F 2 where the center line L of the cutter head shaft 1 of the guillotine head bar 1 intersects is taken as the realm. As the distance between the front end side and the cutter wheel core line L becomes smaller, a portion other than the aforementioned orthogonal second surface F 2 is formed to form a third edge exposing the front end surface 2 c / 2 c is a bit structure of a Phillips screwdriver. Moreover, it is about the structure of the cross head screw head, and it is a cross type with 4 blades 2 that are protruded radially at the front end of the head rod] The paper type meets the Chinese National Standard (CNS) A4觇 Grid (210 X 297 mm) ------- ^ ----- install -------- order --------- #-(Please read the note on the back first Please fill in this page again) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -5-412464 Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs of the Ministry of Economic Cooperation Du printed A7 B7 V. Invention Description 6) The structure of the screwdriver head is characterized by The outer edge trajectory 1 # of the 4 blades 2 is an oblique limb line, and the system is set so that the distance between the leading end and the blade head 1 of the blade head _ 丨! 丨 丨 丨 the distance of the core line L becomes smaller. X |, X 2, X 3 and the opposite head] The straight line Y orthogonal to the cutter head axis L, Y2, Y :, will be interactively constructed by the cross-shaped screwdriver with the outer edge locus. And 卩 丨. | It is like I 丨 I ask for the blade structure of the Phillips screwdriver of item 3 of the Fangang ', the three inclined straight lines X ,, χ2, X: 3, and the blade are delayed _core wire Three orthogonal lines of L ¥ ,, Y2, Y3 are alternately connected with the outer edge trajectory "[Function and effect of the invention] & In the present invention, the first blade 2 is not affected by the bore size a and the second blade 2 b ′ or the second blade 2 a, the second blade 2 b and the second blade 2 c, so as long as the insertion depth of the bit into the groove such as a small screw or screw is variable, the K ground The 4 blades 2 fit the cutting head insertion groove, so that small screws or screws can be smoothly rotated without breaking the cutting head insertion groove ^ Therefore, according to the present invention, it can be rotated smoothly with .. More than 1¾ 1¾ small screws or screws, it has become an unprecedented creation of a cross-shaped screwdriver blade with excellent performance. [K Example of Invention] I® 丨 is a person who shows the example of wooden invention, which will be described in detail below. In this W example, the 7J head @ 1 'is prepared to cut the front end into a tapered shape according to the past. Then, the tapered part of the blade head 枰 1 is made to rotate each paper size to apply the Chinese national standard (CNS). ) A4 specification (210 X 297 public) -6- --1—— — — — — — — I! -------- ^ --------- ^ (Please read the back first Please pay attention to this page and fill in this page again) Λ7 B7 412464 V. Description of the invention &) 90 ° milling is cutting to form 4 blades 2, and then the 4 blades 2 are cut with a milling cutter to form The plane F of the cutter head wheel core line L orthogonal to the cutter head rod 1 is taken as the realm, and the front end side becomes the first edge where the distance between the front end side and the cutter head core line L becomes smaller, and the base end side becomes the front end. The distance between the side and the core axis L of the cutter head becomes smaller, and a part of the outer part of the orthogonal ffij F is formed by the second force that exposes the front end ... Finally, the front end surface of the cutter head is applied slightly. Bend 丨 丨 丨 .1 and modify the cutting process. In detail, the 4 JV blade 2 formed at the front end of the cutter head rod 1 in this embodiment is the first surface orthogonal to the cutter head shaft core line L by the cutter head rod 1 as shown in FIG. 1. F! Is the realm and constitutes the front end side | becomes the first edge 2 a which becomes smaller toward the front end side and the core line L of the cutter head, and sees that the base end side is formed by the front end side and the cutter head The distance between the shaft core lines L becomes smaller, and a part outside the aforementioned orthogonal first surface F 1 is formed to expose the second edge 2 b of the front end surface 2 b < moreover, at the second edge 2 The base end side of b is further provided with a second surface F 2 orthogonal to the base line L of the blade head shaft 1 forming the second blade 2 b against the tool head shaft 1 as a boundary. The distance between the cutter head and the core line L becomes smaller, and a part of the outside of the aforementioned orthogonal second and F 2 is formed to expose 2 c / the third edge 2 c of the front end surface. Therefore, the trajectory of the outer edge of the four blades 2 of the present embodiment is not an inclined straight line, but is set to three inclined straight lines X i which becomes smaller as the distance between the tip cutter head 1 and the cutter core axis L decreases. , X 2, X 3, and 3 straight lines Y!, Y 2, Y orthogonal to the cutter head rod 1 pair cutter head_core L are alternately connected to the outer edge locus.丨 The above 11 projects are manufactured with respect to the cutter head rod 1 of this embodiment, which is the paper size applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ------------ --------- Order '---------' ^ * (Please read the precautions on the back before filling out this page) Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economic Affairs 412464 A7 B7

Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, the Consumer Cooperative Cooperative K. V. Invention Description) The shape of the front end is set as shown in the first figure. , It is set to a size that fits into the three kinds of small screws or screws that are frequently used. That is, 'the first blade 2 a is set to the size of the general name of the I s specification', the second blade 2 b is the size of the JIS standard to be the general size 2 and the third blade 2 c is the JIS standard to the third size Of the size. Ke 赉, 笫 1 shows the head part of the 3M flat head screw 5 a, 5b, 5 c. When the flat head screw 5 a of the above size 1 is used, the 2nd blade 2 a will The flat head small screw 5 a is inserted into the groove to fit in the groove, and the flat head small screw 5 b of the above 2 rule Λ) · will be inserted deeper than the above, at least the first: blade 2 b And the flat head small screw 5 b is a full-fitting insert, and jj., When the flat head small screw 5 c of the size 3 above, the bit head 1 will be deeper than the aforementioned insert, at least the third blade 2 c is fitted with the inserting groove of the flat head small screw 5 c. Therefore, according to the cutter head shank 1 of this embodiment, in any of the three types of flat head screws, the blade will surely engage the cutter head into the groove. The inventor made the first blade 2 a of the wooden embodiment, The second blade 2 b and the mulberry 3 force / Z blades were inserted into the groove by the combined cutting edge of the blade. As a result of measuring the torque intensity, the second force 2 a became 40 kgf. Cm at the second force 2 a. The blade 2b becomes 130 kgf * cm, and the third blade 2c becomes 210 kgf · cni. It is confirmed by experiments that the torque strength specified by the J is fully exceeded (No. 1 is 30 kgf * cm, No. 2 is 10 ϋ li gf. Cm, and No. 3 is 190 kgf * cm). Since this embodiment is structured as described above, most of the 3 paper sizes can be applied to the National Standard (CNS) A ·· specifications (2.10 X 297 mm) -8- — — — — — — Γ— I VI-* 1111 — —— · IIIIKIII; (Please read the precautions on the back before filling out this page} Λ7 412464 B7 V. Description of the invention 6) The small screw or screw 3 of the size rotates smoothly. a functional. And ugly, the blade 2 of 4 R can be prepared separately from the ground. The blade 2 conforms to the size of the force head that fits into the groove of 3 tiny screws or screws. For example, it is not limited to a specific ruler, j ', and can be appropriately It is convenient to set the size of small screws or screws ^ that are commonly used. Ke Zhe, the structure of the cutting tool of the wooden embodiment, of course, can use a common Phillips screwdriver with a handle at the base end of the force rod 1, or a hexagonal rod that can be attached and detached at the front end of a ® movable rotary tool, for example. Various types of cross-blade screwdrivers are suitable for blades and the like. [Brief Description of the Figures] [Figure 1] This is a diagram illustrating the embodiment. [Fig. 2] A plan view illustrating this embodiment. 〔Comparison table of main components〕 F surface F 1 first R! J F 2 second surface 杆 blade rod 2 blade

2 a First —fJ (Please read the notes on the back before filling this page)

----- III Order * ------- I Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy This paper is applicable to the national standard (CNS) A4 specification (210 X 297); -9- 418464 Λ7 W_V. Description of the invention 0) 2 b first blade 2 b ^ front end and 2 c third fJ 2c 'front end -------- *-Γ --- installation ------ --Order -------- * Miao (please read the note on the back? Matters before filling out this page) Printed on the paper by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, this paper applies the China National Standard (CNS) A ·彳 Specifications (210 X 297 mm) -10- Patent No. 8812231 Patent Application March March V Correction Chinese Manual Correction Page March 1990 Correction A / V. Description of Invention (2

[In order to understand the following, the cutting head of the reeling knife 1 is more forward, and the base becomes smaller, and the surface 2 b 'and 4 blades and 2 pairs of blade heads determine the problem, refer to the present invention has a head structure shaft core wire On the side and the end side, the method of the knife of the cross which is the second and the above is attached. The cross shown in the figure is protruded, and its special L orthogonal cutter head shaft system forms an intersecting face edge 2 b. The gist of the present invention. The structure of the screw head of the type screwdriver is the cross-shaped screw sign of the four blade edges 2 that are radiating on the blade rod. The four blade edges 2 are formed by the surface F of the blade rod as the boundary and constitute the front side. The first blade 2 a having a smaller distance from the core wire L is formed so that a portion outside the distance F between the front end side and the core wire L of the cutter head shaft is exposed to the front end. The structure of the blade of the knife, the four blades are based on the first face F orthogonal to the core axis L of the head as the realm, printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, forming the front side, and the front side is formed toward the front side. The first blade 2 a ′ where the distance between the head axis L is smaller, and the base end side is formed so that the distance between the front end side and the tool head axis L becomes smaller, and the aforementioned orthogonal first surface? !! A part of the outer edge of the second edge 2 b is formed so as to expose the front end surface 2 b /, and a base constituting the second edge 2 b is connected to the base end side of the second edge 2 b. The end f is defined by the second surface F 2 orthogonal to the cutter head shaft core line L of the cutter head rod 1, and the distance from the front end side to the cutter head shaft core line L becomes smaller, and the aforementioned orthogonality is continuously connected. A part of the second surface F 2 outside is formed with a cross-shaped screwdriver head structure characterized by the third edge 2 c exposing the front end surface 2 c ′. Moreover, the structure of the bit of a cross-type screwdriver is a cross-shaped IJ 1 having four blades 2 protruding radially from the front end of the bit head 1 — "! ----- Order ------ I--line-'Please read the notes on the back before filling out this page} This paper size is applicable to the national standard (CNS) A4 specification (2) 0 X 297 mm '> _- 5- Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs ^ 4

AT __B7___ V. Description of the invention (5) The shape of the front end is set as shown in the first figure, and is set at 4 blades 2-there are three sections in the shape of the segment, and the size of each blade 2 is set to and Generally, three types of small screws or screws with a high frequency are used. That is, the first blade 2a is set to the size of the general name of the JIS standard, the second blade 2b is set to the size of the general name of the JIS standard, and the third blade 2c is set to the size of the general ISO 3 standard. Moreover, the first figure shows a part of the head of three kinds of flat-head screws 5 a, 5 b, and 5 c. When the flat-head screw 5 a of the above size 1 is used, the first blade 2 a will The blade of the flat head screw 5 a is fitted into the groove, and when the flat head screw 5 b of the above size 2 is inserted, the blade head is inserted deeper than the foregoing, and at least the second blade 2 b and the flat head are inserted. The insert of the small head 5 b of the small screw 5 b fits, and when the flat head small screw 5 c of the above size 3 is made, the tool head rod 1 is deeper than the aforementioned insert, at least the third blade 2 c and the flat head are smaller. The blade of screw 5c fits into the groove. Therefore, according to the bit head 1 of the present embodiment, the blade will surely engage the bit in the groove in any of the three types of flat head small screws. The present inventors caused each of the first edge 2a, the second edge 2b, and the third edge 2c of the present embodiment to fit into the corresponding bit insertion groove of the edge, and measured the torque strength. 2 a becomes 40 kgf · cm, the second edge 2b becomes 130kgi · cm, and the third edge 2c becomes 2 1 Okg f. Cm. It is confirmed by experiments that the torque strength fully exceeds the torque strength specified by the JIS standard ( No. 1 is 30kgi * cm, No. 2 is 100 daggers. "(: 111, No. 3 is 1901 ^ 2 £. (: 〇1). Since this embodiment is structured as described above, a large number of 3 II —.1111 — — — — — — — I-&111; 111111 {Please read the precautions on the back before filling out this page) This paper size applies the national standard (CNS) A4 (210 X 297 mm) ) -8-

Claims (1)

412464 Λ8 B8 C8 D8 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs VI. Applying for Lili Fanyuan 1. 1. ··· The structure of the blade of the screwdriver with a flower head is projected into 4) Radial 7) V-shaped Phillips screwdriver 7J Ji structure 'its special feature is' The 4 blades are constructed with the plane orthogonal to the core line of the blade sleeve sleeve as the boundary, the front side The distance between the front end side and the blade _ _ core wire will be reduced by m-blade, and the base end side, the distance between the end side that is _ Chengyu and the blade head core line will be smaller and the aforementioned orthogonal A part of the outer part is formed with a second edge that exposes the front face. 2 · '· 嵇 嵇 The structure of the Phillips-head screwdriver head is described by the traverse-shaped head of the Phillips-head screwdriver with four blades that are protruded in a radial shape at the front end of the shank. The blade is based on the first quotient of the blade head core of the blade head @ K 交 as the realm, and is constituted at the front end side, so that the distance between the front end side and the core axis of the blade head becomes smaller, and 11 The base end side is formed by the distance between the front end side and the core line of the blade, and the part outside the orthogonal 正交 -stomach is formed with a second edge that exposes the front end surface, and, & amp The base end side of the second blade is further provided with a base end constituting the second blade, and the second surface orthogonal to the core axis of the cutter head shaft of the M _ rod is taken as the boundary, and the more taken to the front end side; the; The distance of the core axis of the cutter head becomes smaller, g. The aforementioned orthogonal second and outer part is formed to expose the third edge of the front end III. 3. —The blade structure of the Phillips screw W is a blade structure of a Phillips screwdriver with four blades that are protruded in a radial shape at the front end of the blade rod. It is characterized by the four blades. The trajectory of the outer edge of is not an inclined straight line, but is set to be a straight line where the distance between the tip and the blade head and the blade_core line becomes smaller and the straight line orthogonal to the cutter head shaft core line is alternately Linked outer edge loquat. ----- Bu .------ Order ------ Paper (please read the precautions on the back before filling in this I) This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 (Mm) -11-412464 g D8 6. Apply for a profit scope 4. The cross of a cross-shaped screwdriver as described in Zhong Li Patent _ Item 3 * < · Line T / b head knife P 0 and the ' The track rail straight edge Jr Xiao Xi's set up the 迚 3 land system S, in the middle of it -LJ 'made the structure of the three heads I —rj I 1 ------!-L.—1.- I »= _ i ml-I 11 III-· -i 1 __ (Please read the precautions on the back before filling out this page) Printed on paper printed by employees’ cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, the Chinese National Standard (CNS) A4 specifications (210X297 mm) -12-