TWM637371U - Improvements of screw head - Google Patents

Abstract

An improvement of the screw head, especially the improvement of the practicability and progress of the previous patent TWM436104, so that the screw head can more effectively generate chips, contain chips and internal pressure residues and effectively To avoid the phenomenon of curling up around the head when the screw head is flattened on the surface of the work object; the improvement of the screw head is that the conical neck of the screw head is provided with at least one strip that is inwardly recessed into the conical neck of the screw head. The groove has at least one blade extending sideways on both sides of the groove. The blade is integrally formed and protrudes outward on the surface of the screw head conical neck, and the blades on both sides of the groove and the screw head There is a vertical or non-perpendicular angle between the axis lines, and by setting at least one groove and several sections of intermittent helical blades or several intervals of non-helical blades, it is possible to achieve a sharper and easier cutting of wood fibers. The ability and the ample chip space in the groove do make the sinking of the screw head more labor-saving, and the surface of the work object is flat and not piled up.

Description

Improvements to screw heads

An improvement of a screw head, especially at least one strip-shaped groove that is inwardly recessed into the conical neck of the screw head is integrally formed on the conical neck of the screw head, and at least one sideward edge is provided on both sides of the groove The extended blade is integrally formed and protrudes outward on the surface of the conical neck of the screw head, and there is a vertical or non-perpendicular angle between the blades on both sides of the groove and the axis line of the screw head.

The technology of setting at least one helical rib that rotates more than 360 degrees on the neck of the screw head and the helical rib to form a screw blade is the technical feature of the patent approval TWM436104 created by the author of this case in the early technology. It can achieve the expected generation or exposure of the wood fiber burr debris in the screw hole when the screw head sinks into the work object, so as to obtain a smooth and clean effect around the screw hole of the work object.

However, there are the following shortcomings to be improved in actual use benefits:

(1) The known early technological creation TWM436104 screw head neck has at least one spiral convex rib that rotates more than 360 degrees. Cutting is easy to produce incomplete cutting, so it affects the cutting effect of the spiral blade.

(2) Due to the known early technological creation TWM436104 screw head neck lacks cutting debris and uncut debris accommodation space, the cutting effect of the screwdriver blade will not be fast enough, and Crowded debris also causes greater resistance for the screw head to sink into the work object.

(3) Due to the limited cutting effect of the known early technology creation TWM436104 helical blade and the lack of cutting debris and uncut debris accommodation space, the ideal lightness and labor saving cannot be achieved when the screw head sinks into the work object.

(4) Since the neck of the screw head lacks space for cutting debris and uncut debris, excessive debris extrusion is likely to cause the surface of the working object around the screw head to flatten the surface of the working object when the screw head is flattened. The phenomenon of gathering.

Therefore, it is indeed necessary to improve the early technical creation of the creator of this case, so as to effectively improve the actual practical progress and industrial utilization of the patented technical creation.

The purpose of the creation of "Screw Head Improvement" in this case is to:

(1) Effectively improve the early technical creation TWM436104, when the screw head sinks into the work object, the cutting of wood fibers by the continuous at least 360-degree spiral blade is prone to incomplete cutting.

(2) Effectively improve the early technical creation TWM436104. Due to the lack of space for the debris after cutting and the debris that has not been cut thoroughly in the neck of the screw head, the screw head has a large resistance to sinking into the work object.

(3) Effectively improve the shortcoming that the early technical creation TWM436104 cannot achieve the ideal lightness and labor saving when the screw head sinks into the work object.

(4) Effectively improve the early technical creation TWM436104. Because the neck of the screw head lacks the space for the debris after cutting and the debris that has not been cut thoroughly, resulting in excessive debris extrusion, it is easy to produce the screw head when the screw head is flattened on the surface of the work. The surface of the surrounding work object is gathered up.

The creation of this case is characterized by:

The tapered neck 2 of the screw head 1 is provided with integrally formed at least one inwardly recessed screw head cone The strip-shaped groove 3 of the neck 2 has at least one blade 4 extending sideways on both sides of the groove 3, and the blade 4 is integrally formed and protrudes outward on the surface of the screw head conical neck;

The blades 4 on both sides of the groove 3 have an inclination angle E, and there is a non-perpendicular angle between the inclination angle E and the axis line of the screw head;

There is a vertical angle between the blade 4 on both sides of the groove 3 and the axis of the screw head 1;

The angle F between the two sides of the bottom edge of the blade 4 body is between 30 degrees and 45 degrees;

The concave position of the upper end of the groove 3 is continuous with the lower edge of the screw head 1, that is, the concave starting position of the groove 3 is equal to the top edge position of the tapered neck 2;

The position where the upper end of the groove 3 starts to be indented has a set distance from the lower edge of the screw head 1 , that is, the indented starting position of the groove 3 is lower than the top edge of the tapered neck 2 .

With the arrangement of at least one groove and several segments of consecutive spirally arranged blades or several segments of intermittent non-helical blades, it is possible to achieve a sharper ability to easily cut wood fibers and ample chip space in the groove, indeed It makes the sinking of the screw head more labor-saving, and the surface of the work object is flat and not piled up.

1: screw head

11: gear ring

2: tapered neck

3: Groove

4: blade

E: tilt angle

F: Angle

Fig. 1: the three-dimensional view of this case creation embodiment (1).

Fig. 2: the front view of this case creation embodiment (1).

Figure 3: Right side view of Figure 2.

Figure 4: Section A-A of Figure 2.

Fig. 5: the front view of this case creation embodiment (two).

Figure 6: Right side view of Figure 5.

Figure 7: B-B sectional view of Figure 5.

Figure 8: Schematic diagram of the creation embodiment (3) of this case.

Figure 9: Schematic diagram of the creation embodiment (four) of this case.

Figure 10: Schematic diagram of the creation embodiment (5) of this case.

Figure 11: Schematic diagram of the creation embodiment (six) of this case.

Figure 12: Schematic diagram of the creation embodiment (seven) of this case.

Figure 13: Right side view of Figure 12.

Figure 14: C-C sectional view of Figure 12.

Figure 15: Schematic diagram of the creation embodiment (eight) of this case.

Fig. 16: the front view of this case creation embodiment (eight).

Figure 17: Right side view of Figure 16.

Figure 18: D-D sectional view of Figure 16.

Please refer to Fig. 1, Fig. 5, Fig. 8 to Fig. 12 and Fig. 15 shown in the creation embodiment (one) to embodiment (eight) shown in this case, these different embodiments have all possessed on technical structure creation: screw head The setting of the tapered neck 2 of 1 and at least one groove 3 and several sections of blades 4 arranged in a continuous spiral or several sections of blades 4 arranged in a continuous non-helical manner can achieve a sharper ability to easily cut wood fibers and a concave groove. The plentiful chip space of the groove does make the sinking of the screw head more labor-saving, and the surface of the work object is flat and not raised, which is indeed the application of the same technology creation.

Please refer to the embodiment (one) shown in Fig. 1 to Fig. 4, in this embodiment, the tapered neck 2 of the screw head 1 is provided with an integrally formed at least one strip that is inwardly recessed into the tapered neck of the screw head 2. Groove 3, the position where the upper end of the groove 3 starts to be concave is continuous with the lower edge of the screw head 1, that is, the concave starting position of the groove 3 is equal to the top edge position of the tapered neck 2, in the groove The two sides of 3 have at least one blade 4 extending sideways, and the blade 4 is integrally formed and protrudes outward on the surface of the screw head conical neck 2, and the blades 4 on both sides of the groove 3 have an inclination angle E There is a non-perpendicular angle between the inclination angle E and the axis of the screw head 1, and the angle F between the two sides of the bottom edge of the blade 4 body is between 30 degrees and 45 degrees.

Please refer to the embodiment (two) shown in Fig. 5 to Fig. 7, in this embodiment, between the bottom edge of the screw head 1 and the top edge of the tapered neck 2, a circle of teeth formed by a plurality of teeth is provided. The ring 11 is provided with at least one strip-shaped groove 3 inwardly recessed into the tapered neck 2 of the screw head on the tapered neck 2, and has at least one blade extending sideways on both sides of the groove 3 4. The blade 4 is integrally formed and protrudes outward on the surface of the conical neck 2 of the screw head. The blades 4 on both sides of the groove 3 have an inclination angle E, and there is a distance between the inclination angle E and the axis line of the screw head 1. A non-perpendicular angle, and the angle F between the two sides of the bottom edge of the blade 4 body is between 30 degrees and 45 degrees.

Please refer to the embodiment (three) to the embodiment (six) shown in Fig. 8 to Fig. 11. In these embodiments, it is mainly disclosed that the groove 3 provided by the integral molding of the screw head 1 with the tapered neck 2 can be one Above, that is, the screw head 1 tapered neck 2 of the embodiment (three) shown in FIG. 8 can be provided with two grooves 3 integrally formed. The groove 3 that the neck 2 is integrally formed can be three, and the groove 3 that the screw head 1 tapered neck 2 of the embodiment (five) shown in Figure 10 is integrally formed can be four, as shown in Figure 11 The screw head 1 of embodiment (six) has five grooves 3 formed integrally with the tapered neck 2.

Please refer to the embodiment (seven) shown in Fig. 12 to Fig. 14, in this embodiment, the tapered neck 2 of the screw head 1 is provided with an integrally formed at least one strip-shaped recess recessed into the tapered neck 2 of the screw head. The groove 3 has at least one blade 4 extending sideways on both sides of the groove 3, and the blade 4 is integrated The shape protrudes outward on the surface of the screw head conical neck 2, and the blades 4 on both sides of the groove 3 are horizontally set without an inclination angle, that is, the distance between the horizontal setting of the blade 4 and the axis line of the screw head 1 There is a vertical angle, and the angle F between the two sides of the bottom edge of the blade 4 body is between 30 degrees and 45 degrees.

Please refer to the embodiment (eight) shown in Fig. 15 to Fig. 18, in this embodiment, the tapered neck 2 of the screw head 1 is provided with an integrally formed at least one strip that is inwardly recessed into the tapered neck of the screw head 2 Groove 3, the position where the upper end of the groove 3 starts to be concave has a set distance from the lower edge of the screw head 1, that is, the concave starting position of the groove 3 is lower than the top edge position of the tapered neck 2, in the concave The two sides of the groove 3 have at least one blade 4 extending sideways, and the blade 4 is integrally formed and protrudes outward on the surface of the screw head conical neck 2, and the blades 4 on both sides of the groove 3 have an inclination angle E, there is a non-perpendicular angle between the inclination angle E and the axis of the screw head 1, and the angle F between the two sides of the bottom edge of the blade 4 body is between 30 degrees and 45 degrees.

1: screw head

2: tapered neck

3: Groove

4: blade

Claims (6)

An improvement of the screw head, the conical neck of the screw head is provided with at least one strip-shaped groove inwardly recessed into the conical neck of the screw head, and at least one of the grooves extends sideways on both sides of the groove. The blade is integrally formed and protrudes outward on the surface of the conical neck of the screw head. According to the improvement of the screw head described in item 1 of the scope of the patent application, the blades on both sides of the groove have an inclination angle, and there is a non-perpendicular angle between the inclination angle and the axis line of the screw head. According to the improvement of the screw head described in item 1 of the scope of the patent application, the blades on both sides of the groove are set horizontally without inclination angle, that is, there is a vertical angle between the horizontal setting of the blade and the axis line of the screw head. According to the improvement of the screw head described in item 1 of the scope of the patent application, the angle between the two sides of the bottom edge of the blade body is between 30 degrees and 45 degrees. According to the improvement of the screw head described in item 1 of the patent scope of the application, the position where the upper end of the groove starts to be concave continues to the lower edge of the screw head, that is, the starting position of the groove is equal to the top of the tapered neck edge position. According to the improvement of the screw head described in item 1 of the scope of the patent application, the position where the upper end of the groove starts to be concave has a set distance from the lower edge of the screw head, that is, the starting position of the groove is lower than that of the tapered neck. Top edge position.

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