TWI555920B - Screw structure improvement - Google Patents

Description

Screw structure improvement

The invention relates to a thread structure, in particular to a screw structure improvement capable of improving the locking strength and the leakage preventing effect.

According to a conventional screw structure, as shown in FIG. 6, the screw 30 is provided with a screw head 31 at one end and a screw tip 32 at the other end, and the screw head 31 and the screw tip 32 are A threaded section 33 is formed in a straight line, and the threaded section 33 is spaced apart from the upper and lower threads by a fixed distance L. When the screw 30 is biased to the thin plate 40 by the screw tip 32, the screw 30 The screw 40 is screwed into the thin plate 40 at one end, and the screw 30 is screwed into the threaded portion 33 to form a screw locking effect, and the fixed pitch L of the threaded portion 33 is engaged with the thin plate 40, thereby forming a combination of the screw 30 and the thin plate 40. However, it is not difficult to find out that the above-mentioned conventional structure has some shortcomings. The main reason is that the threaded section 33 of the screw 30 is only formed with a fixed spacing L. When the fixed spacing L is greater than the thickness of the thin plate 40, the threaded nail 30 There will be no clamping effect between the thin plate 40 and the gap between the screw 30 and the thin plate 40, and the downward screwing force of the screw 30 will cause the thin plate 20 to partially form a concave shape, which will cause the screw 30 to be easily self-contained. Loose and due to tightness Insufficient, the joint between the screw 30 and the thin plate 40 is prone to water leakage, and there is a lack of insufficient bonding strength and insufficient leakage prevention effect. When the fixed spacing L is smaller than the thin plate 40, the screw 30 is drilled on the thin plate 40. The hole will be slightly smaller or equal to the fixed spacing L, so that the clamping effect between the screw 30 and the thin plate 40 is insufficient, and there is no excess gap to provide the chip removing function.

In view of this, the inventors have been engaged in the manufacturing development and design experience of related products for many years, and after detailed design and careful evaluation of the above objectives, the present invention has finally become practical.

The technical problem to be solved by the present invention is to provide an improvement in the structure of the screw in view of the above-mentioned drawbacks existing in the prior art.

A screw has a head formed at one end thereof, and a tip portion is formed at the other end of the screw, the screw is formed with at least a groove at the tip portion, and the screw has a drill bit effect by the slot, and the screw is formed adjacent to the head portion. a first thread segment, and the screw is formed with a second thread segment between the first thread segment and the tip, and the second thread segment is formed with a linear thread spirally surrounding the surface of the screw, and the first thread The segment is formed with a wavy thread spirally wound around the surface of the screw, and the wavy thread is formed with a plurality of wave tops toward the head of the screw, and the wavy thread is disposed in an overlapping manner on the top of the wave of the upper and lower layers.

a screw has a head formed at one end, and a tip is formed at the other end of the screw, the screw is formed with a first thread segment between the head and the tip, and the screw is between the first thread segment and the tip Forming a second thread segment, and the second thread segment is formed with a linear thread spirally surrounding the surface of the screw, and the screw is formed with at least all grooves at the tip portion, and the slot has a screw effect for the screw, and The first thread segment is formed with a wavy thread spirally wound around the surface of the screw, and the wavy thread is formed with a plurality of wave tops toward the head of the screw, and the wavy thread is staggered at the top of the wave of the upper and lower layers. The wavy thread is formed with a plurality of short pitches and a plurality of long pitches.

A first main object of the present invention is that the first thread segment is formed with a wavy thread spirally wound around the surface of the screw, and the wavy thread is formed with a plurality of wave tops toward the head of the screw, and the first thread segment Adjacent to the head of the screw, when the screw is locked to the thin plate, pushing the lower end of the thin plate through the top of the wave of the wavy thread can restore the thin plate to a flat shape, prevent the excessive deformation of the thin plate, and thereby improve the screw and the thin plate. The tightness between the two, thereby improving the leakage prevention effect of the screw.

A second main object of the present invention is that the wavy thread is arranged in a staggered manner on the top of the wave of the upper and lower layers, so that the wavy thread is formed with a plurality of short pitches and a plurality of long pitches, and the short spacing of the wavy threads The clamping effect of the screw on the locking body is formed, and the chip removing effect is formed by the long spacing of the wavy thread.

Other objects, advantages and novel features of the invention will be apparent from the description and appended claims.

[this creation]

10‧‧‧ screws

11‧‧‧ head

12‧‧‧ tip

121‧‧‧ slotting

13‧‧‧First thread segment

131‧‧‧Wave thread

1311‧‧‧ wave top

14‧‧‧Second thread segment

141‧‧‧linear thread

20‧‧‧Sheet

L1‧‧‧ short spacing

L2‧‧‧ long spacing

[study]

30‧‧‧ screws

31‧‧‧ screw head

32‧‧‧spiral tip

33‧‧‧Threaded section

40‧‧‧Sheet

L‧‧‧Fixed spacing

Figure 1 is a side elevational view of an embodiment of the invention.

Fig. 2 is a schematic view showing the state of use of an embodiment of the present invention.

Figure 3 is a side elevational view of yet another embodiment of the present invention.

Figure 4 is a partial enlarged view of a further embodiment of the invention at a first thread segment.

Fig. 5 is a schematic view showing the state of use of still another embodiment of the present invention.

Fig. 6 is a schematic view showing the state of use of the screw structure of the prior art.

In order to enable your review committee to have a better understanding and understanding of the purpose, features and effects of the present invention, please refer to the following [Simplified Description of the Drawings] for details:

In one embodiment of the present invention, firstly, as shown in FIGS. 1 and 2, a screw structure is improved, which comprises: a screw 10 having a head 11 formed at one end thereof and being at the other end of the screw 10 A tip portion 12 is formed, the screw 10 is formed with at least a groove 121 at the tip portion 12, and the screw 10 has a drill bit effect by the slit 121, and the screw 10 is formed with a first thread segment 13 adjacent to the head portion 11. And the second threaded portion 14 is formed between the first threaded portion 13 and the tip portion 12, and the second threaded portion 14 is formed with a linear thread 141 spirally surrounding the surface of the screw 10. A threaded section 13 is formed with a wavy thread 131 spirally wound around the surface of the screw 10. The wavy thread 131 is formed with a plurality of wave tops 1311 toward the head 11 of the screw 10, and the wave thread 131 is opposite to the upper and lower layers. The top portion 1311 is disposed in an overlapping manner, and when the screw 10 is locked to the thin plate 20, the thin plate 20 is pushed upward through the wave top portion 1311 of the wavy thread 131 to prevent the excessive deformation of the thin plate 20, thereby improving the screw 10 and the thin portion. The leakage prevention effect between the plates 20.

For the actual use, please view it as shown in Figures 1 and 2. The first thread segment 13 of the present creation is adjacent to the head 11 of the screw 10, and the screw 10 is at the first thread segment 13 and the tip portion 12. A second threaded section 14 is formed therebetween. When the screw 10 is locked to the thin plate 20 (such as a metal wave plate), the downward screwing force exerts a partial depression on the thin plate 20, and the wave passing through the wavy thread 131 is obtained. The top portion 1311 pushes up the lower end of the thin plate 20, so that the thin plate 20 can be restored to a flat shape, and the excessive deformation of the thin plate 20 is prevented, thereby improving the tightness between the screw 10 and the thin plate 20. Thereby, the leakage prevention effect of the screw 10 is improved.

In another embodiment of the present invention, firstly, as shown in FIGS. 3 and 4, a screw structure is improved, which comprises: a screw 10 having a head 11 formed at one end, and another screw 10 A tip portion 12 is formed at one end, and a first threaded portion 13 is formed between the head portion 11 and the tip portion 12, and the screw thread 10 forms a second thread portion between the first thread portion 13 and the tip portion 12. 14. The second thread segment 14 is formed with a linear thread 141 spirally wound around the surface of the screw 10. The screw 10 is formed with at least a groove 121 at the tip portion 12, and the screw 10 has a drill bit by the slot 121. The first thread segment 13 is formed with a wavy thread 131 spirally surrounding the surface of the screw 10. The wavy thread 131 is formed with a plurality of wave tops 1311 toward the head 11 of the screw 10, and the wavy thread 131 is The wave tops 1311 of the upper and lower layers are arranged in a staggered manner, and the wavy threads 131 are formed with a plurality of short pitches L1 and a plurality of long pitches L2, and the short distances L1 of the wavy threads 131 form the screws 10 for the locks. Clamping effect And the long wavelike thread pitch L2 of 131 formed chip evacuation.

For the actual use, please view it as shown in Figures 3, 4, and 5. The first thread segment 13 of the present creation is adjacent to the head 11 of the screw 10, and the screw 10 is at the first thread segment 13 and the tip. A second threaded section 14 is formed between the portions 12, and when the screw 10 is locked to the thin plate 20 (such as a metal wave plate), the downward screwing force exerts a partial depression on the thin plate 20, and the undulating thread 131 is transmitted through the undulating thread 131. The top 1311 of the wave pushes up the lower end of the thin plate 20, so that the thin plate 20 can be restored to a flat shape, and the excessive deformation of the thin plate 20 can be prevented, thereby improving the tightness between the screw 10 and the thin plate 20, thereby improving the leakage prevention of the screw 10. The effect is that, since the first thread segment 13 of the screw 10 is formed with a wavy thread 131 spirally surrounding the surface of the screw 10, and the wavy thread 131 is arranged in a staggered manner on the top 1311 of the upper and lower layers, The wavy thread 131 is formed with a plurality of short pitches L1 and a plurality of long pitches L2. When the screws 10 are locked to the thin plate 20, the screws 10 can clamp the thin plate 20 through the short pitch L1 formed by the wavy threads 131. Effect, make the screw 10 It can be firmly combined with the thin plate 20 to achieve the function of preventing loosening.

In summary, the present invention has indeed achieved a breakthrough structural design, and has improved invention content, and at the same time, can achieve industrial utilization and progress, and the present invention is not found in any publication, but also novel, when In accordance with the provisions of the relevant laws and regulations of the Patent Law Patent applications, please ask the Board of Review to grant legal patent rights, and to pray.

The above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; that is, the equivalent variations and modifications made by the scope of the present invention should still belong to the present invention. Within the scope of the patent.

10‧‧‧ screws

11‧‧‧ head

12‧‧‧ tip

121‧‧‧ slotting

13‧‧‧First thread segment

131‧‧‧Wave thread

1311‧‧‧ wave top

14‧‧‧Second thread segment

141‧‧‧linear thread

Claims (5)

A screw structure improvement comprising: a screw having a head formed at one end thereof and a tip formed at the other end of the screw, the screw forming a first thread segment between the head and the tip, and The first thread segment is formed with a wavy thread spirally wound around the surface of the screw, and the wavy thread is formed with a plurality of wave tops toward the head of the screw, and the wavy thread is interlaced at the top of the wave of the upper and lower layers. The wavy thread is formed with a plurality of short pitches and a plurality of long pitches, and the short-pitch of the wavy threads forms a clamping effect of the screws, and the chipping effect is formed by the long spacing of the wavy threads. The improvement of the screw structure according to the first aspect of the patent application, wherein the first thread segment is adjacent to the head of the screw, and when the screw is locked to the thin plate, the thin plate is pushed upward through the wave top of the wave thread to prevent the thin plate Excessive sag deformation, thereby improving the leakage prevention between the screw and the sheet. The screw structure improvement according to the first aspect of the patent application, wherein the screw is formed with at least all grooves at the tip portion, and the slit has a screw effect for the screw. The screw structure improvement according to the first aspect of the invention, wherein the screw is formed with a second thread segment between the first thread segment and the tip. The screw structure improvement according to claim 4, wherein the second thread segment is formed with a linear thread spirally wound around the surface of the screw.