TWM503487U - Quick fastening and locking screw - Google Patents

Description

Quick-locking screw

The present invention relates to a screw, and more particularly to a screw that can be quickly locked.

Referring to FIG. 1 and FIG. 2, the conventional screw 1 includes a screw head 11, a rod body 12 extending outwardly from one end of the screw head 11, and at least one threaded portion 13 disposed on the rod body 12; A tapered surface 121 is formed on the rod body 12 and opposite to the end of the screw head 11; further, the threaded portion 13 is looped from the tapered surface 121 to the rod body 12, and each thread segment 13 has a plurality of thread segments 13 The screw 131 on the rod is equidistantly arranged; when the lock is applied, the tapered surface 121 is used to abut against an object 2 to drill the object 2 by using the screw 131 while drilling The cutting process gradually drives the rod 12 into the object 2 to complete the locking action.

However, after the actual use, it is found that the conventional screw 1 has the following defects, which are described in detail as follows: 1. At the beginning of the locking, the thread is cut by the screw 131 on the tapered surface 121, and the object is rotated. When the time is entered, only the tip surface is used to open the object, which will cause a resistance when the rod body 12 enters, and the fibers of the object 2 are also easily entangled on the rod body 12, except that the locking speed is lowered. At the same time, the user must also apply a larger twist lock torque to maintain the screwing motion of the screw. It must be improved.

2. In the locking device, since the rod body 12 can be screwed in because the tapered surface 12 opens the object 2, the rod body 12 will be closely received by the fiber recovery force of the object 2 during the locking. The clamping of the rod body 12 causes an increase in the frictional force and the locking resistance of the rod body 12 and the object member 2, so that the screw 1 is locked in the object 2 process at the beginning of the lock or in the lock. Lieutenant General will have a great resistance to lock and it needs to be improved.

Therefore, the purpose of the present invention is to provide a screw that can be quickly locked, which can achieve rapid drilling and cutting, and reduce the friction between the object and the object during the locking process, thereby reducing the locking resistance and facilitating the locking. The process is more labor-saving and quick.

Therefore, the screw that can be quickly locked by the present invention comprises a screw head, a rod body extending from one end of the screw head and extending axially along a rod core, and a thread segment and a fine thread respectively ringed on the rod body; Wherein the thread segment and the fine thread extend from the tapered surface of the rod to the rod body, and the fine thread is disposed closer to the end of the tapered surface than the thread, and the fine thread and the thread The inclination angle of the shaft of the rod body is smaller than the inclination angle of the screw shaft and the shaft of the rod; therefore, at the beginning of the locking, the fine thread on the tapered surface can be drilled and stirred on an object In addition to the swarf, the threaded segment can quickly drive the function of locking the rod into the object. At the same time, during the locking process, the fine thread on the rod can ream the perforation on the object. The diameter of the perforation on the object is larger than the diameter of the rod body, and the friction between the rod body and the object member is further reduced, so that the locking resistance of the screw can be effectively reduced regardless of the initial setting and the locking, thereby causing the lock The process is more labor-saving and quick.

[study]

1‧‧‧ screws

11‧‧‧ screw head

12‧‧‧ rod body

13‧‧‧Threaded section

121‧‧‧spirit

131‧‧‧ thread

[This new type]

3‧‧‧ screws

31‧‧‧ screw head

32‧‧‧ rod body

33‧‧‧Threaded section

34‧‧‧ fine thread

35‧‧‧The chip removal department

36‧‧‧Bumps

321‧‧‧spirit

331‧‧‧ threaded teeth

32α‧‧‧ shaft shaft

331 α, 34 α‧‧‧ tilt angle

351‧‧‧ slotting

Figure 1 is a conventional plan view.

Figure 2 is a cross-sectional view of a conventional lock state.

Figure 3 is a perspective view of a first preferred embodiment of the present invention.

Figure 4 is a bottom plan view of the first preferred embodiment of the present invention.

Figure 5 is a schematic view showing the locked state of the first preferred embodiment of the present invention.

Figure 6 is a perspective view of a second preferred embodiment of the present invention.

Figure 7 is a perspective view of a third preferred embodiment of the present invention.

Figure 8 is a schematic view showing the locked state of the third preferred embodiment of the present invention.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

Before the present invention is described in detail, it is noted that in the following description, like elements are denoted by the same reference numerals.

Referring to FIG. 3 and FIG. 4, in the first preferred embodiment of the present invention, the quick-locking screw 3 includes a screw head 31, and a rod body extending outward from one end of the screw head 31 and following a rod mandrel 32α. 32, and a threaded portion 33 and a fine thread 34 respectively ringed on the rod body 32; wherein the threaded portion 33 is looped from the tapered surface 321 to the rod body 32, and the threaded portion 33 has a plurality of The thread 331 is equidistantly disposed, and each of the threads 331 has an inclination angle 331 α with the rod spindle 32 α; in addition, the fine thread 34 The tapered surface 321 is looped toward the screw head 31, and the thin thread 34 is disposed closer to the end of the tapered surface 321 than the thread 331, and the fine thread 34 and the rod spindle 32 α The inclination angle 34 α is smaller than the inclination angle 331 α of the screw 331 and the rod spindle 32 α. In the embodiment, the fine thread 34 is provided with three, and can be annularly covered on the rod 32, or The ring is disposed on a portion of the rod 32. In the embodiment, the thin thread 34 is illustrated as being looped on a portion of the rod 32. Further, the rod portion 32 is interposed between the thread portion 33 and A flange portion 36 may be disposed between the screw heads 31 in time to remove the burrs of the peripheral edge of the borehole.

Referring to FIG. 3 and FIG. 5, at the beginning of the locking of the embodiment, the tapered surface 321 is used to resist the object 4, and a twisting force is applied to the screw head 31, so that the tapered surface 321 is During the process of propelling the object 4 out of a hole 41, the fine thread 34 will simultaneously scrape and slash the fiber around the object 4 of the hole 41, and at the same time, the hole diameter of the hole 41 can be enlarged to The resistance of the tapered surface 321 and the thread 331 is reduced, and the screw 331 is also disposed on the tapered surface 321 , so that the screw 331 can be continuously driven during the drilling process. The rod 32 is screwed into the object 4; further, when the rod 32 is screwed into the object 4, the fine thread 34 also has a cutting object 4 during the contact of the object 4 with the rod 32. The object 4 wound on the rod body 32 is outside the fiber, and the hole diameter of the hole 41 can be enlarged during the cutting process, so that the hole diameter of the hole 41 is larger than the diameter of the rod body 32, so the rod body 32 is locked. During the process, it is not squeezed by the periphery of the borehole 41, so that the friction between the rod body 32 and the borehole 41 is effectively reduced. Therefore, regardless of the lock, the lock is set. The screw 3 can effectively reduce the resistance of the lock is provided, to promote a more effort lock reset process quickly.

Referring to FIG. 6, in the second preferred embodiment of the present invention, the quick-locking screw 3 still includes a screw head 31, a rod body 32, a threaded portion 33 and a fine thread 34, and the aforementioned components, connection relationship and desired The functions are the same as those of the first embodiment, and will not be described in detail. In particular, in the embodiment, the thread segments 33 are provided with two, and the thread 331 of the thread segment 33 and the thread 331 of the other thread segment 33 are provided. In a staggered arrangement, when the screw 3 rotates once, the lock point a is locked to the lock point b as shown in the figure, that is, the screw 331 in the screwed object (not shown) has two, so When only one screw 331 is screwed into the object as compared with the conventional screw 1, the screwing speed of the present invention is better.

Referring to FIG. 7, in the third preferred embodiment of the present invention, the quick-locking screw 3 still includes a screw head 31, a rod body 32, a threaded portion 33 and a fine thread 34, and the aforementioned components, the connection relationship and the desired The function is the same as that of the first embodiment, and is not described in detail. In particular, in this embodiment, at least one chip portion 35 is disposed on the screw 331 adjacent to the tapered surface 321 , and each of the chip removing portions 35 has at least The two interconnected slots 351 are formed so that the partial thread 331 is in a zigzag shape. In the embodiment, the first six corners of the screw head 31 are calculated by the point where the tapered surface 321 is in contact with the rod body 32. Each of the screws 331 is provided with the chip removing portion 35, and each of the screws 331 is provided with two chip removing portions 35 as an example; with reference to FIG. 8, the design of the chip removing portion 35 can be used for drilling and locking When the slots 351 and the bore 41 are formed, a chip discharge space 42 is generated, and the chip evacuation space 42 can provide the chips during the locking process to quickly carry out the chip removal, so that the setting speed is better and the outer lock is simultaneously closed. The chip evacuation space 42 is also accommodating the chip, which will help the screw 3 to prevent the screw from retreating.

In summary of the foregoing, the present invention can quickly lock a screw by means of the screw The segment and the fine thread are both extended from the tapered surface of the rod, and the fine thread is disposed closer to the end of the tapered surface than the screw, and the fine thread and the shaft of the rod are The inclination angle is smaller than the inclination angle of the screw shaft and the shaft of the rod; at the beginning of the locking, the fine thread can be drilled first and the chip is shredded, so that the thread segment can quickly drive the rod body to lock outside the object, and at the same time The locking thread on the rod body can reduce the friction between the rod body and the object during the subsequent locking process, so as to reduce the locking resistance of the screw, and the locking process is more labor-saving and rapid.

However, the above description is only for the purpose of illustrating the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the new specification. All should remain within the scope of this new patent.

3‧‧‧ screws

31‧‧‧ screw head

32‧‧‧ rod body

33‧‧‧Threaded section

34‧‧‧ fine thread

36‧‧‧Bumps

321‧‧‧spirit

331‧‧‧ threaded teeth

32 α‧‧‧ shaft shaft

331 α, 34 α‧‧‧ tilt angle

Claims (3)

A quick-locking screw, comprising a screw head, a rod body extending from one end of the screw head and extending axially along a rod core, and at least one threaded portion disposed on the rod body; wherein the rod a tapered surface is formed on the body and opposite to the end of the screw head; and the threaded portion is looped from the tapered surface to the rod body, and the threaded portion has a plurality of equidistantly disposed threaded teeth, and the threaded portion Each thread has an inclined angle with the rod mandrel; and the rod body is further provided with a fine thread having an outer diameter smaller than an outer diameter of the thread, and the fine thread is thinned by the tapered surface The threaded end is annularly disposed, and the fine thread is disposed closer to the end of the tapered surface than the thread, and the angle of inclination of the thin thread with the shaft of the rod is smaller than the inclination angle of the thread with the shaft of the rod. The quick-locking screw according to the first aspect of the patent application, wherein the screw is provided with two thread segments, and the thread of the thread segment is staggered with the thread of the other thread segment. The quick-locking screw according to the first or second aspect of the patent application, wherein at least one chip portion is disposed on the screw adjacent to the tapered surface, and each of the chip removing portions has at least two interconnected portions. The grooving consists of.