TWI496997B - Fastner for corrugated screw - Google Patents

Description

Fast-locking lock firmware

The present invention relates to a lock design, and more particularly to a lock with a fast twist lock.

Referring to FIG. 1 and FIG. 2, a flat head screw 1 includes a rod body 11, a screw thread 12 disposed on a surface of the rod body 11, a screw head 13 connected to one end of the rod body 11, and a thread a locking portion 14 on the rod body 11 opposite to the other end of the screw head 13; wherein the screw head 13 has a top surface 131, a top surface 131 and the rod body 11 are connected and oriented by the top surface 131 The rod body 11 has a connecting surface 132 which is gradually extended and a cutting edge 133 which is formed on the connecting surface 132 by a plurality of equal angles, and each of the aforementioned cutting edges 133 has a two-phase separation from the top surface. The shank 11 is curved and curved in an arc-shaped cutting edge surface 134; when the object 2 is locked, the burr generated after the screw 12 is cut will rotate in the direction in which the screw 12 is screwed in, and The guiding edges of the curved cutting edges 133 and the cutting edge surfaces 134 are rotated, and the burrs are pressed into the object 2, and the cutting edges 133 and the cutting edges 134 are simultaneously pressed. It is also possible to flatten the expansion convex portion of the object 2 which is pressed by the screw 12 to make the surface of the object 2 more flat, so as to effectively avoid burrs and swelling. Defects such as bulging bulges and cracked materials are produced.

However, it has been found that, after actual use, it is known that the design of the recesses can only be accommodated by the chips, and the cutting edges 133 are designed to be the same as the screwing direction of the thread 12 so that the cutting edges 133 It is possible to achieve the burr of the compression knob and the expansion of the object 2 during the screwing process; however, the actual use test Later, it was found that there is still room for improvement in the structural design pattern, so the design of this case was produced.

Therefore, the object of the present invention is to provide a quick-locking lock fastener, which can quickly lock the lock compound into the lock to increase the flatness after the lock, and at the same time, can greatly increase the lock after the lock The tightening force and other effects after the combination.

Therefore, the present invention has a quick-locking lock fastener, which is mainly provided with a plurality of auxiliary blocks on the bottom surface of the screw head, and a accommodating area is formed between any two adjacent auxiliary blocks, and each of the auxiliary blocks is formed. Forming a wall surface by a side of the accommodating area and extending upward from the bottom surface of the screw head, and a top surface formed by the wall surface facing the other adjacent side of the accommodating area And a cutting edge formed on the wall and the top wall, wherein the top wall is tapered by the top surface of the screw toward the rod of the fastener, so that the top wall Forming an auxiliary wall extending from the cutting edge to the other side of the adjacent accommodating area, and indirectly expanding the accommodating space of the accommodating area; so when the lock is engaged, the lock uses the auxiliary block The auxiliary matching cutting enables quick cutting into the lock compound when the lock is engaged, and the chips generated by the cutting are accommodated in the accommodating area, and are effectively pressed by the auxiliary wall to avoid excessive swarf of the swarf Externally, effectively maintaining the flatness of the lock compound after the lock, and avoiding Because the chips can not be completely accommodated crack circumstances other materials arising Further, after the locking engagement into the lock, the lock is produced with the compound tightly each engaging the locking effect, greatly enhance the tightening force after the fitting.

The above and other technical contents, features, and advantages of the present invention will become apparent from the Detailed Description of the <RTIgt;

Referring to FIG. 3 to FIG. 5, a preferred embodiment of the present invention includes a rod body 31, a screw head 32 disposed at one end of the rod body 31, and a rod body 31 disposed on the rod body 31 opposite to the end of the screw head 31. The locking portion 33, and the plurality of helical rings 34 are disposed on the rod body 31; wherein the locking portion 34 can be a drill tail and a pointed tail in the embodiment, and the following description It is made up of a pointed tail structure.

Continuing the above, the screw head 32 has a top surface 321 , a bottom surface 322 extending downward from the top surface 321 , a plurality of auxiliary blocks 323 disposed on the bottom surface 322 , and between the two adjacent auxiliary blocks 323 . An accommodating area 324 is formed; wherein each auxiliary block 323 has a side of the accommodating area 324 and extends upward from the bottom surface 322 to form a wall surface 3231, one wall 3231 facing another adjacent The top side wall 3232 of the accommodating area 324 is connected to the top wall 3232, and a cutting edge 3233 formed by the top wall 3232 and the wall surface 3231. The top wall 3232 is formed by the top surface 321 A direction of the rod body 31 is tapered, so that the top wall 3232 is formed with an auxiliary wall 3234 extending from the cutting edge 3233 to the other side of the adjacent receiving area 324, and the auxiliary wall 3234 The top wall 3232 is disposed at an inclined position, and the top wall 3232 is represented by a curved surface design in the embodiment; and the receiving area 324 is in view of the structure of the auxiliary block 323. The design factor is such that the accommodation space of the accommodating area 324 is expanded.

Referring to FIG. 3 and FIG. 4, when the lock is engaged, a lock is applied before the screw head 32. The torque is interlocked into the lock compound 4 by interlocking the lock portion 33, and the screw 34 is driven to sharply cut the lock compound 4, so that the lock member 3 can be quickly locked into the lock compound 4 And when the screw head 32 enters, the cutting edge 3233 of the auxiliary block 323 can be used to assist the cutting, that is, the wood fiber of the lock compound 4 which is broken during the cutting process is cut by the cutting edge 3233, to be sure Being cut off, effectively avoiding the lack of resistance of the wood fiber winding, and at the same time, the chip generated during the locking can be designed to be tapered by the top wall 3232 toward the rod body 31, so that the chip can follow the top The wall 3232 and the auxiliary wall 3234 are discharged outwardly, so that the torque of the locking member 3 is greatly reduced, and at the same time, the enlarged arrangement of the accommodating space of the accommodating area 324 can not only allow the swarf to be accommodated. At the same time, the locking member 3 is locked to the lock compound 4, and is more capable of forming a tight locking effect with the lock compound 4, so as to avoid the fact that the chip cannot completely accommodate the cracked material generated, and the auxiliary device is further assisted. The wall 3234 and the top sill wall 3232 are in an inclined arrangement to make the convex The chip is pressed by the auxiliary wall 3234 when it is locked, and is then pressed into the lock compound 4 when it is locked, so as to prevent the chip from protruding excessively and effectively maintaining the lock. The flatness of the lock compound 4, after the lock 3 is locked, can produce a close snap-fit effect with the lock compound 4, and greatly improve the fastening force after the lock.

In summary, the present invention has a quick-locking lock, which is provided with a plurality of auxiliary blocks on the bottom surface of the screw head, and an accommodating area is formed between the two auxiliary blocks, so when locked, not only by the The auxiliary fitting of the auxiliary block is used to generate the rapid cutting, and the accommodating area is also supplemented by the chipping capacity after cutting. Placed inside, thereby forming a tight fit with the lock compound, and the lock does not have any chips protruding outside the lock compound after the lock is locked, so as to increase the flatness after the lock, so that the lock is more The utility model can effectively improve the fastening force after the locking, so that the object of the invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the description of the invention. All should remain within the scope of the invention patent.

3‧‧‧Locks with fast twist lock

31‧‧‧ rod body

32‧‧‧ screw head

33‧‧‧Locking Department

34‧‧‧ thread

321‧‧‧ top surface

322‧‧‧ bottom

323‧‧‧Auxiliary block

324‧‧‧Receiving area

3231‧‧‧ wall

3232‧‧‧Top wall

3233‧‧‧ cutting edge

3234‧‧‧Auxiliary wall

1 is a schematic view of a conventional flat head screw; FIG. 2 is a schematic cross-sectional view of the first preferred embodiment of the present invention; FIG. 4 is a schematic enlarged view of the screw head of the preferred embodiment; A schematic view of a partial component of the preferred embodiment.

3‧‧‧Locks with fast twist lock

31‧‧‧ rod body

32‧‧‧ screw head

33‧‧‧Locking Department

34‧‧‧ thread

321‧‧‧ top surface

322‧‧‧ bottom

323‧‧‧Auxiliary block

324‧‧‧Receiving area

3231‧‧‧ wall

3232‧‧‧Top wall

3233‧‧‧ cutting edge

3234‧‧‧Auxiliary wall

4‧‧‧Lock compound

Claims (3)

A lock with a quick twist lock, comprising a rod body, a screw head disposed at one end of the rod body, a locking portion disposed on the rod body opposite to the other end of the screw head, and a plurality of spiral rings a thread disposed on the rod body; wherein the screw head has a top surface and a bottom surface extending downward from the top surface, wherein the bottom surface is provided with a plurality of auxiliary blocks, and any two adjacent ones Forming an accommodating area between the auxiliary blocks; wherein each of the auxiliary blocks has a side of the accommodating area and extends upward from the bottom surface to form a wall surface, and the wall surface faces the other adjacent one a top wall formed by the other side of the accommodating area, and a cutting edge formed by the top sill wall and the wall surface, wherein the top sill wall is gradually formed by the top surface toward the rod body The contraction is such that an auxiliary wall extending from the cutting edge to the other side of the adjacent receiving area is formed on the top wall. The fast-locking lock according to the first aspect of the patent application, wherein the top wall has a curved surface design. The fast-locking lock according to the first aspect of the patent application, wherein the auxiliary wall and the top wall are in an inclined arrangement.