JPS5934016A - Screw tool - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a screw having a socket hole or a socket hole and a cross recess on the head surface.

Conventional screws of this type have a head (2) as shown in Figure 2.
) is simply formed by drilling a square socket hole (1). The socket hole (1) is formed by forging by punching with a punch having a square shaped protrusion. However, as shown in Figure 2, due to the shape of the final product formed with a punch, the screw head (2) does not become a perfect circle due to the thickness or processing limit, and stress concentrates on the square of the socket hole (1), causing the corner There is a drawback that left-sided deviation (c) occurs from this, and there is also a risk that quenching cracks may occur during carburizing and quenching, which may make tightening work difficult. Also, screws with socket holes and cross recesses (as shown in Figure 3, socket holes (11) and cross recesses (31
There is also a type with a socket hole (1) drilled in it, but since the socket hole (1) is a square hole like the one above, this has the same drawback as the above one, and also has a cross hole (31 blade grooves). 3a')
is parallel to the side of the socket hole fl+, so the socket hole (11
The disadvantage is that the protruding length of the blade groove is long, the circumferential shape is complex, and there are many places where the force is locally concentrated during machining, making it easy for cracks to form.

The present invention has been made in view of the above points, and the object of the present invention is to finish the head in a state close to a perfect circle! To provide a screw with a socket hole and a screw with a socket hole/cross recess which are strong and free from the risk of being subjected to special tightening training.

The present invention (7) will be specifically explained below using examples.

The screw (8) shown in Fig. 4 is a wood screw with a threaded portion (6) at the bottom, and a socket hole il+ with an equilateral rectangular cross section in the m-plane of the head (2). It is. The regular feeding square shape of the socket hole (1) is as shown in FIG. 7, and as shown in FIG. Feed square shape,
When the length of the diagonal le j of a square is y, the length of the diagonal that is common to the diagonal line of the square, X1 = V, and Among the diagonals, it is + above which is not common to the diagonal of the square. In other words, if the length of the vertical line from the apex of the regular octagon A to the square is h, then so that the position π is. The depth of the socket hole (1) is not more than 1.5 times the diagonal length Xl of the socket hole (1), and the side wall of the socket hole , and one hole of the socket hole (1) is an inverted circular female space (6
). A recess (11) having an arcuate cross section is provided at the upper peripheral edge of the socket hole (1) as required. Furthermore, in the example shown in Fig. 9, a socket hole ftl is drilled on the top surface of the screw head (2) of the machine screw, and in the example shown in Fig. )
In the embodiment shown in Fig. 11, a socket hole ft) is bored in the top surface of the bolt.
A socket hole (1) is bored in the top surface of the socket. Furthermore, the first
In the embodiment shown in Fig. 2, a socket hole (1) is bored on the top surface of the screw head (2) of the hexagonal bolt, and in the embodiment shown in Fig. 13, the socket hole (1) is bored in the top surface of the screw head (2) of the lead screw. socket hole i on the surface
In the embodiment shown in Fig. 14, a socket hole +1) is bored in the top surface of the screw head (2) of the round countersunk machine screw, and in the embodiment shown in Fig. 15, a socket hole A socket hole +1+ is bored in the top surface of the screw head (2) of the screw. In addition, screws (A is flat head screw, steel wheel screw, truss machine screw,
Even if it is a bind machine screw, round wood screw, round wood screw, round wood screw, etc.
It may be a round dried wood screw, a flat tatsu pin tapis, a pot tahish tapis 1, a tras tatsu pin tapis, a picid tatsu pin tapis, a round tatsu pin tapis, a samo tahhee, an I dipis, a round tahhee J tapis, a round dried tahini tapis, etc. The screw shell (A) configured as described above is attached to a pit (9) as shown in Fig. 17, which is attached to a machine such as a screwdriver (7) or an air tool (8) as shown in Fig. 16.
The acid ζ joint (10) at the tip of tools such as the driver (7) and pit (9) is tightened with the first
It has a square prism shape as shown in Figure 8. Then, the fitting portion (10) is fitted as shown in FIG. 19, and the screwdriver (7) and pit (8) are rotated to complete tightening. The torque of this one-stage tightening is the same as that of a square hole, and the torque of tightening with a high degree of culm can be obtained. Also, since the socket hole +1) K taper, the fitting part of the screwdriver (7) or hitch (9) (
10) has a bite in the socket hole fi1, making it easy to work upward. Here, if the gap between the socket hole (1) and the socket hole +11 is large and the socket hole is easily crushed, it is difficult to tighten the socket hole (1) with a large tightening force.
It is similar to the one with +) drilled, and the head is not perfectly round and is prone to cracking. Fig. 20 shows another embodiment described above, in which the socket hole (1) is formed in a double stacked shape with the equilateral rectangular shape shifted at about 45 degrees. In this case, the tightening angle was 90°.
The angle should be 5°.

Further, FIGS. 21, 22, and 23 show an embodiment of a screw cap with a socket hole and a cross recess. Drill a socket hole (1) into the head (2) of the screw shell (4) made of a wood screw with the same dimensions as described in 1. Socket hole +11 so that the diagonal gauze Km (3a) that is common to the diagonal of the square mouth is located.
This is the same guy who drilled the cross hole (3). At this time, the length of the diagonal of the square opening is set to be 09 to 0.65 of the length of the wing groove (3a) of the cross hole (3). In addition, in the embodiment shown in FIG. 25, a socket hole (+) and a cross recess (3) are drilled on the top surface r of the thread order (2) of the flat head machine screw, and the embodiment shown in FIG. In this example, a cross recess (3) is drilled into the cylindrical screw head (2) of a knurled bolt. Furthermore, in the embodiment shown in Fig. 28, a socket hole (1) and a cross recess (3) are bored on the top surface of the screw head (2) of the hexagonal pole. A socket hole (1) and a cross recess (3) are bored on the top surface of the screw head (2) of the screw. A socket hole [+1] and a cross recess (3) are drilled in the surface, and in the embodiment shown in FIG. ) is drilled.Furthermore, the root cause of the screw is the same as the above, even if it is a flat screw, a double screw, a truss screw, or a piston screw, there are flat tap J screws, pot tap pin screws, and truss screw screws. , round tapping screws, round tapping screws, round tapping screws, round tapping screws, etc. may also be used.
) can be tightened with a human screwdriver (9) K as shown in Fig. 19 which is attached to a machine such as a screwdriver (7) or air tool (8) as shown in Fig.
) and can be tightened with a regular cross screwdriver.

In addition, FIG. 32 shows the socket hole + IIK cross recess (3) shown in FIG. @20.

In addition, when molding a screw (4) from a bar material, it is carried out in the same manner as in the method. First, as shown in Fig. 33, the shaft of the bar (14) is inserted into the tie (13;
5) Kojin bunch loaded with 1 (bar stock (14) at 16j)
The head of the bar (14) is struck to form a roughly finished head 07) on the head of the bar (14) as shown in FIG. The finishing screw forming tool (B) is shown in Fig. 35 (when only socket hole f1+ is used).
a) (b) (c) As shown in K, a socket hole forming protrusion (18j) of the same shape as the socket hole T++ of the screw tool (4) is provided protrudingly on the end face of the punch (+6), and a socket hole forming protrusion (18j) is provided on the end face of the punch (+6). When the protrusion (18+ K is formed with a taper of 6° to 1° and has a socket hole (1) and a cross recess (3), the socket as shown in Fig. 36 (a) (b) (c) K is formed. It is formed by providing the protrusion (18) for hole forming with a wing piece 09) for cross blow forming, thereby forming the bar material (14).
)'s two heads θη are struck to form a socket hole +1+ or a socket hole ftl and a cross hole (3).

As stated above, the present invention is an equi-entering angle between a regular octagon and a square inscribed in the regular octagon. The length of the two diagonal gauze that is common to the diagonal of the square is x)5
=y (!: Since we have drilled an equilateral hexagonal socket hole in the head which becomes the target feeding square, KTf
It does not cause cracks due to stress concentration at the corners, unlike those that drill socket holes in the straight direction, and the tightening is strong and does not come open at times, and the head shape is different from conventional ones. There is a risk of deformation, and since the shape of the socket hole is a rectangular shape that is close to a square, there is an advantage that the socket hole will not collapse even if it is tightened with strong tightening force.

In addition, in the IK developed by the present invention, a cross hole is drilled in the same direction as the socket hole so that each blade groove is located on the diagonal line of the 1 square, so it can be tightened with a cross cross driver. Moreover, even if a cross hole is provided, it has the advantage that it is easier to construct than the conventional type, and there is no force concentration and no cracking occurs during tightening.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional example, Fig. 2 is a plan view showing the drawbacks of the conventional example shown in Fig. 1, Fig. 3 is a plan view of another conventional example, and Fig. 4 is a plan view of an embodiment of the present invention. 5 is a front sectional view of FIG. 4, FIG. 6 is an enlarged sectional view of the screw head of FIG. 5, FIG. 7 is an enlarged plan view of the same screw head, and FIG. 8 I- i Explain the shape of the socket hole in Figure 7. Explanation F! Figure A, Figure 9, Figure 10, Figure 11, Figure 1
Figures 2 and v; Figures 13, 14 and 15 are perspective views of other embodiments of the same as above, Figure 16 is a perspective view of a driver tightening the same screws as above, and Figure 17 is a perspective view of the same screws as above. A perspective view of an air tool for tightening, FIG. 18 is a cross-sectional view showing the cross-sectional shape of the fitting part at the tip of a screwdriver or hitch, FIG. 19 is a cross-section 171 of the fitting part doubled into the socket hole of the same above,
Fig. 20 //i A plan view of another embodiment same as above, Fig. 21 is a perspective view of another embodiment same as above, Fig. 22 is a front cross section I view of Fig. 21, and the space between Fig. 23 is Fig. 22 Fig. 24 is an enlarged plan view of the same as above, Fig. 25, Fig. 26, Fig. 27, Fig. 28, Fig. 29, $-30 and Fig. 31 are f of the above.
1 is a perspective view of the embodiment shown in FIG. 1, FIG. 35(a), (b), (c) to 35 (a), (b), and (c) for co-molding the same screw, and a bottom view, (1) is a socket hole, f21//J'
117 white face, (3) is a cross hole. Agent Patent Attorney Ishi 1) Chief 7 Figure 12 Figure 15 Figure 13 Figure 14 Figure 21 Figure 22 Figure 23 Figure 24 FXi Figure 25 Figure 26 Figure 27 Procedural amendment (voluntary) 1 Case Display screw 3 Relationship with the case of the person making the amendment Patent applicant 4 Attorney 5 Date of amendment order Correction specification application number Japanese Patent Application No. 57-144988 1 Name of the invention Screw device 2 Claims [1] Sei 8 It is a rectangular rectangle between a polygon and a square inscribed in a regular octagon, and the length δ of the diagonal of the square is y
Then, the long xo of the two diagonals that are common with the diagonal of the square among the diagonals of the equi-feeding angle becomes I□=y, and the remaining two diagonals of the equi-feeding angle that are not common with the diagonal of the square A socket hole attaching tool whose % mark is the diagonal of the . [2] An equi-entered polygon between a regular octagon and a square inscribed in the regular octagon, where the length of the diagonal of the square is y
Then, the length X of the two diagonals common to the diagonals of the square among the diagonals of the equal feeding angle is Zl=! / and at the same time, drill a cross hole in the same position as the socket hole so that the remaining two diagonal grooves that are not common with the diagonal of the square out of the diagonals of the equal feeding angle are located on the diagonal of the upper square. A screw with a socket hole and a cross recess. [Convex] Among the diagonals of the feeding angle, the length of the diagonal that is common to the diagonal of the square is 0.95 to 0 of the length of the wing groove of the cross recess.
．． A self-mounted socket hole/cross recessed screw tool according to claim 2, characterized in that a socket hole and a cross recess are bored in a dimensional relationship of 65 mm. 5 Detailed Description of the Invention The present invention relates to the structure of a screw having a socket hole or a socket hole and a cross recess in the head. The conventional screw tool (4)' of this type is simply formed by drilling a square socket hole (1) in the head (2)' as shown in FIG. )' is formed by forging with a pashchi that has a square shaped protrusion.However, as shown in Figure 2, the shape of the final product formed with a pashchi means that the screw head ( 2) There is a disadvantage that the socket hole (l) is not a perfect circle and stress is concentrated in the square corner of the socket hole (l), causing cracks (c) from the corners.
Moreover, there was a risk that quenching cracks would occur during carburizing and quenching, which could cause them to open during tightening work. In addition, as a screw with a socket hole or a cross recess, there is also a screw with a socket hole (1)' and a cross recess (3)', as shown in Figure 3. It is a square hole like the one above, but it has the same drawback as the one above, and it has a cross hole (3)'
Since the valley g groove (3a)' is parallel to the side of the socket hole (1), the protrusion length of the blade groove from the socket hole (1)' is long, and
The disadvantage is that the shape in the circumferential direction is complex and there are many places where stress is locally concentrated during processing, making it easy for cracks to occur. The present invention has been made in view of the above-mentioned points, and the object of the present invention is to finish the head in a state close to a perfect circle, and to make the casing strong and strong so that there is no risk of it being damaged during tightening. To provide a screw tool with a socket hole and a screw tool with a socket hole/cross recessed hole. The present invention will be specifically explained below using examples. The screws (3) shown in FIG. It is perforated. The equi-feed square shape of such a socket hole ill is a j-shape as shown in FIG. If the length of the diagonal of square O is y, then the length of the diagonal common to the diagonal of the square is xl x xl = y, and the length of the diagonal of the square O is xl = y. The length I2 of the remaining two diagonals that are not common with the diagonal of the square is [i < y A is the length of the vertical line from the vertex of the regular octagon A to the square, h is the square O to 7h (not including O). The depth of the socket hole fi+ is the diagonal length of the socket hole (1),
1.5 times or less, and the side wall of the socket hole (11 has a tapered shape of 6" to 1° so that it becomes narrower toward the bottom, and the bottom of the socket hole it) is an inverted conical space (6" ).A chamfered part (1) with an arcuate cross section is provided on the upper periphery of the socket hole (fl) according to the requirements.
r fc In the embodiment shown in Fig. O, a socket hole (l) is drilled on the top surface of the screw head (2) of the small screw P'i roughly:
In the example shown in Fig. fJ10, the screw head of Tatsupin Bupis (
2) A socket hole i11 is drilled on the top surface of the 11th
The embodiment shown in the figure has a cylindrical screw head with a knurled screw (
2) A socket hole fl) is bored in the top surface of the socket. In the embodiment shown in Fig. 12, a socket hole 11) is bored in the top surface of the hexagon head screw head (2), and in the embodiment shown in Fig. 2), and in the embodiment shown in FIG. 14, a socket hole il+ is drilled in the top surface of the screw head (2) of the countersunk machine screw. In the embodiment shown in FIG. 15, a socket hole [1] is bored in the top surface of the screw head (2) of the round screw. The screw tool (8) can be used for flat screws, flat screws, truss screws, piston screws, round wood screws, round wood screws, round wood screws, flat tarragon screws, pot screws, etc. It may be codfish sifjis, trastalahinkupis, paisido tarahishitapis, round codpink pis, Sarahishijibis, maruoratarajinjipis, maruboshi tarahishikupis, etc. The screw tool (2) configured as described above is tightened with a screwdriver (9) as shown in Fig. 17, which is attached to a machine such as a screwdriver (7) or an air tool (8) as shown in Fig. 16. However, this driver (7) and pit 9
) The fitting part (10) at the tip of the tool 4 is in the shape of a regular square prism as shown in FIG. The fitting portions (lO) are then fitted as shown in FIG. 19, and the screwdriver (7) or pit 8) is rotated to tighten. At this time, the tightening torque is as high as that of a square hole. In addition, since the socket hole (1) has a taper, the fitting part (10) of the driver (7) or pit 9) is recessed in the socket hole +11, making it easy to work on dirt floors. Here, the reason why the socket hole t1+ is made to have the dimensional relationship as shown in f#I will be explained. If I2 or H, (y-5)+5 or more (-zh or more), the gap between the thick fitting part (10) and the socket hole II) becomes too large and the socket hole is likely to collapse, so tighten with a large tightening force. I can't do it, and I can't do it.
It is the same as the one with 11 opened, the head is not a perfect circle and there are cracks. However, Figure 0 shows another embodiment described above, in which the socket hole (1) is formed in the shape of the above-mentioned equilateral hexagon C being doubled with a phase shift of 45 degrees. The one with a tightening angle of 900 is 4
The angle should be 5°. Further, FIGS. 21, 22, and 23 show an embodiment of the screw having a socket hole and a cross recess (A). On the top surface of the head (2) of the screw tool (to) made of wood screws, a socket hole (1) with the same dimensions as the above-mentioned square shape is drilled. Socket hole +11 so that the diagonal KA groove (3a) that is common to the diagonal of the mouth is located.
The same guy drilled the cross hole f31. At this time, the length of the diagonal of the square opening is set to O,Q~0.65 of the length of the wings of the cross recess (3) @(3a). In the embodiment shown in Fig. 25, a socket hole (+1) and a cross recess (3) are bored on the top surface of the screw head (2) of the small screw.
In the embodiment shown in the figure, the screw head (2) of Tarahi, 7j His
A socket hole (1) and a cross-shaped recess (3) are fully drilled on the top surface of the bolt.In the embodiment shown in FIG. +i) and cross recess (3
). Roughly speaking, in the embodiment shown in Fig. 28, a socket hole (1) and a cross recess (3) are bored on the top surface of the screw head (2) of the hexagonal bolt, and in the embodiment shown in Fig. A socket hole +I] and a cross recess (3) are drilled on the top surface of the screw head (2) of the screw, and in the example shown in Fig. 30, a socket hole + socket hole i11
In the embodiment shown in Fig. 31, a socket hole il+ is formed on the top surface of the screw head (2) of the circular screw.
and a cross hole (3) must be made. Screw J4 (A) in the awn
As with the previous one, even if it is a flat screw, a counter screw, a tow screw, or a bind screw, it is a flat screw.
It may also be hot pot codfish, torastala goshifujisu, bound codfish, whole codfish, /pupis, zaara codfish jisu, whole codfish hinkpisu, or whole dried codfish. The screw tool (8) configured as described above can be used with a screwdriver (7) or an air tool (8) as shown in Fig. 16.
It can be tightened with a bit 9) as shown in Figure 9417 attached to a machine like ), or it can be tightened with an ordinary cross screwdriver using the cross recess (3). Figure 32 shows the socket l-hole il+ shown in Figure 20.
A cross hole (3) is also provided on the top. In addition, when forming a screw tool (■) from a bar, proceed as follows: First, as shown in the first convex diagram, insert the shaft of the bar 04 into the tie (13) of the solid leg type X12, and move it. Type (15)
As shown in FIG. 34, the head of the bar (14) is struck to form a roughly finished head 07) on the head of the bar 04 attached to the bar. Fig. 35 (a) (b) when only the socket l-hole it) is used for finishing screw tool forming)
As shown in (c), there are screws (
The same star-shaped socket hole forming protrusion 08) as the socket hole (1) in A) is provided protrudingly, and the socket hole forming protrusion (I8) is formed with a taper of 6° to 1°. When having a hole f1+ and a cross recess (3), a wing piece (19) for forming a cross size is provided on the protrusion (18) for forming a socket hole, as shown in FIGS. As a result, the roughly finished head (1) of the bar (14) is JIIT'd to form the socket hole (1) or the socket hole (1).
) and a cross recess (3) are formed. As described above, the present invention is an equitransparent polygon between a regular octagon and a square inscribed in the regular octagon, and when the length of the diagonal of the square is y, the square The length 4x of the two diagonals that are common to the diagonal is I-y
At the same time, the rest of the diagonals of the rectangular equi-permeable hole that are not common with the diagonals of the square are drilled, so stress does not concentrate at the corners and cause cracks, unlike conventional socket holes with a square cross section. In addition, the tightening is strong enough to prevent it from opening, and the shape of the head is also irregularly deformed and there is a risk of slipping, and the shape of the socket hole is a rectangular hole that is close to a square shape. It has the advantage that the socket hole will not collapse even if it is tightened with a strong tightening force. However, in the combined invention of the present invention, a cross hole is drilled in the same direction as the socket hole so that each blade groove is located on the diagonal line of the above square, so it is not possible to tighten even with a cross screwdriver. Moreover, even if a cross hole is provided, the workability is better than the conventional one, stress concentration does not occur, and cracking does not occur when tightening. 4. Brief description of the drawings Fig. 1 is a perspective view of the conventional example, Fig. 2 is a plan view showing the drawbacks of the conventional example shown in Fig. 1, Fig. 5 is a plan view of another conventional example, and Fig. 4 is a perspective view of the conventional example. A perspective view of one embodiment of the present invention, FIG. 5 is a front sectional view of FIG. 4, FIG. 6 is an enlarged sectional view of the screw head of FIG.
The figure is an enlarged plan view of the same screw head as above, figure f18 is an explanatory diagram showing the shape of the socket 1-hole in figure 7, figure 9, figure 410,
Figures 11, 12, 13, 14, and 15 are perspective views of other embodiments above, and Figures 1 to 0 are of a screwdriver for tightening the screwdriver shown above. Figure 14M and Figure 17 show an air tool for tightening the same screw as above. Fig. 20 is a plan view of another embodiment same as above, Fig. 21 is a center view of another embodiment same as above), Fig. 22 is a perspective view of the embodiment The figure is a normal 1vr view of Fig. 21,! Fig. 25 is an enlarged sectional view of Fig. 22, Fig. 24 is an enlarged plan view of the same as above, Fig. 25, Fig. 26, Fig. 27, Fig. 28,
Figure 29, Figure 30, and Figure 31 are perspective views of other embodiments same as above, and Figure 32 is plan views 1 and 5 of other embodiments same as above.
Figure 3 is a cross-sectional view of the same rough-machining die as above, Figure 34 is a front view of the rough-machined bar material as above, and Figures 35 (a) (b) (
c) is a front view, a front sectional view, and a bottom view of the same thread co-forming tool as above, and FIG. 30 (a> (b) and (c) is a front view of another embodiment of the same thread co-forming tool; In the front sectional view and bottom view, (1) shows the socket 1 to the hole, (2) shows the head, and (3)
) is a cross hole. Agent Patent Attorney Choshichi Ishi

Claims (1)

[Scope of Claims] [1] A regular octagon and a square inscribed in the regular octagon, where the length of the diagonal of the square is y
Then, the length Xl of the diagonal of the two trees that is common to the diagonal of the square among the diagonals of the equal feed angle becomes A screw with a socket hole. [2] A regular octagon and a square inscribed in the regular octagon, and when the length of the helical angle line of the square is 1y, the square's diagonal of the regular octagon is The length Xl of the two diagonals that are common to the diagonal becomes X1='l, and the length X2 of the remaining two diagonals that are not common to the diagonal of the square among the diagonals of the equi-entered angle is X2≠±(y
Drill a rectangular socket hole in the head with equal sides of 4, 7, and 7 holes, and drill a cross hole in the same hole as the socket hole so that each wing groove is located on the diagonal of the above square. A screw with a socket hole and a cross recess. [3] Among the diagonals of the equilateral octagon, the length of the diagonal that is common to the diagonal of the square is the width of the wing groove of the cross recessed screw.