CN213270632U

CN213270632U - Self-tapping screw

Info

Publication number: CN213270632U
Application number: CN202021958348.9U
Authority: CN
Inventors: 刘金华
Original assignee: Dongguan Yubiao Hardware Product Co ltd
Current assignee: Dongguan Yubiao Hardware Product Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-05-25
Anticipated expiration: 2030-09-09

Abstract

The utility model discloses a self tapping screw belongs to screw technical field. A self-tapping screw comprises a screw head, wherein a first thread is arranged on the outer surface of the screw head, a screw rod is fixedly connected to one end of the screw head, a second thread is arranged on one side of the screw rod, a third thread is arranged on the other side of the screw rod, one end of the screw rod is fixedly connected with a screw tail, a circular clamping groove is formed in the outer surface of the screw tail, a semi-ring is clamped inside the circular clamping groove, a handle is fixedly connected to one end of the semi-ring, and a spring is arranged on one side of the handle; the utility model discloses, the user of service supports the screw through the handle, makes the spiral shell head aim at the position that needs to be fixed, inserts the inside of spiral shell tail with the instrument and rotates to make the spiral shell head rotate, along with the spiral shell head rotates the embedding, first screw thread deepens gradually and offers a thread groove inside fixed object, along with the spiral shell head embedding, the second screw thread follows the entering and enlarges the screw thread sky and make the screw rod can imbed.

Description

Self-tapping screw

Technical Field

The utility model relates to a screw technical field especially relates to a self tapping screw.

Background

The self-tapping screw is a pointed, coarse-tooth and hard wood screw, also is made of aluminum alloy and plastic, is called a tap for tapping a metal hole, is used for nonmetal or soft metal, and does not need to be provided with a bottom hole or tapped; the self-tapping screw is pointed, so that self-tapping can be realized; ordinary screw all is the crew cut, and thickness is unanimous, and self tapping screw is that: the hole drilled is a hole without tapping, the used screw is different from the general screw, the head is sharp, the pitch is larger, the method is similar to a chipless screw tap, and the screw can be directly screwed in without tapping, and the metal and the plastic usually use the method, and the method can tap, drill, extrude and press corresponding threads on a solidified material by the threads of the solidified material, so that the solidified material is tightly matched with the threads.

The existing self-tapping screw is generally composed of a screw head, a screw rod and a screw tail, and is convenient and quick to use, most self-tapping screws need to be supported by hands when being fixed, the safety performance is not strong, the screw is easily fixed and inclined when the screws are fixed, unnecessary loss is caused, and therefore the self-tapping screw with strong safety is required to be easily installed and fixed, and convenience is brought to users.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the safety performance is not strong and providing a self-tapping screw which needs the user to support the screw by hand in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a self-tapping screw, includes the spiral shell head, the surface of spiral shell head is provided with first screw thread, the one end fixedly connected with screw rod of spiral shell head, one side of screw rod is provided with the second screw thread, the opposite side of screw rod is provided with the third screw thread, the one end fixed connection spiral shell tail of screw rod, circular draw-in groove has been seted up to the surface of spiral shell tail, circular draw-in groove's inside joint has the semi-ring, the one end fixedly connected with handle of semi-ring, one side of handle is provided with the spring.

Preferably, one end of the screw head is provided with an auxiliary tooth, the outer surface of the screw rod is sleeved with a gasket, and the diameter of the gasket is larger than that of the screw tail.

Preferably, a hexagonal clamping groove is formed in the screw tail, and a cross clamping groove is formed in the bottom of the hexagonal clamping groove.

Preferably, the number of the half rings is two, one end of each of the two half rings is fixedly connected with a handle, and the inner diameter of each of the half rings is slightly larger than that of the circular clamping groove.

Preferably, the number of the auxiliary teeth is four, and the four auxiliary teeth are arranged at one end of the screw head in a rectangular array.

Preferably, the thickness of the gasket is 0.3 cm.

Compared with the prior art, the utility model provides a self tapping screw possesses following beneficial effect:

1. the utility model discloses, through the cooperation setting between spiral shell head, first screw thread, screw rod, second screw thread, third screw thread, spiral shell tail, circular draw-in groove semi-ring, handle and the spring, can make the device when using, the user supports the screw through the handle, makes the spiral shell head aim at the position that needs to fix, inserts the instrument into the inside of spiral shell tail and rotates, thereby makes the spiral shell head rotate, along with the spiral shell head rotates the embedding, first screw thread deepens gradually and offers a thread groove in fixed object inside, along with the spiral shell head embedding, the second screw thread follows and gets into and enlarges the screw thread empty and makes the screw rod imbed, finally enlarge the thread groove and fix the chucking by the third screw thread, make the screw difficult to drop, after finishing the screw fixation, make the semi-ring strut through pressing the handle, and take off can, in the process of installation, user's hand is remote to support the screw, prevent to cause the injury to the hand because of fixing tool slips out in following the spiral shell tail, improved the security in the installation, facilitate for the staff.

2. The utility model discloses, through the semi-ring, cooperation setting between handle and the supplementary tooth, the user is when fixed, support the steady fixed position of hugging closely of supplementary tooth through the handle, prevent that the screw from taking place the slope in the embedding, and can make the fixed object of the more light embedding of spiral shell head through supplementary tooth, setting through hexagon draw-in groove and cross draw-in groove, make the staff can fix the screw with different instruments, can have multiple choice under the not enough condition of instrument, facilitate for staff's installation screw, setting through the gasket, make the screw when fixing, be difficult for causing the damage to fixed object, protect fixed object.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic structural view of the half ring of the present invention;

fig. 4 is an enlarged schematic structural view of a point a in fig. 1 according to the present invention.

In the figure: 1. a screw head; 2. a first thread; 3. a screw; 4. a second thread; 5. a third thread; 6. A snail tail; 7. a circular slot; 8. a half ring; 9. a grip; 10. a spring; 11. auxiliary teeth; 12. a gasket; 13. a hexagonal clamping groove; 14. a cross clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-4, a self-tapping screw comprises a screw head 1, wherein one end of the screw head 1 is provided with auxiliary teeth 11, the number of the auxiliary teeth 11 is four, the four auxiliary teeth 11 are arranged at one end of the screw head 1 in a rectangular array, the outer surface of the screw head 1 is provided with a first thread 2, one end of the screw head 1 is fixedly connected with a screw rod 3, one side of the screw rod 3 is provided with a second thread 4, the other side of the screw rod 3 is provided with a third thread 5, the outer surface of the screw rod 3 is sleeved with a gasket 12, the thickness of the gasket 12 is 0.3 cm, the screw is not easy to damage a fixed object and protects the fixed object when being fixed through the arrangement of the gasket 12, one end of the screw rod 3 is fixedly connected with a screw tail 6, the diameter of the gasket 12 is larger than that of the screw tail 6, a hexagonal clamping groove 13 is arranged inside the screw tail 6, and a cross clamping groove, through the arrangement of the hexagonal clamping grooves 13 and the cross-shaped clamping grooves 14, workers can fix screws by different tools, various options can be provided under the condition that the tools are insufficient, the installation of the screws is facilitated for the workers, the circular clamping grooves 7 are formed in the outer surfaces of the screw tails 6, the semi-rings 8 are clamped in the circular clamping grooves 7, the handles 9 are fixedly connected to one ends of the semi-rings 8, the number of the semi-rings 8 is two, the handles 9 are fixedly connected to one ends of the two semi-rings 8, the inner diameter of each semi-ring 8 is slightly larger than the inner diameter of the circular clamping groove 7, through the matching arrangement among the semi-rings 8, the handles 9 and the auxiliary teeth 11, when the workers fix the screws, the auxiliary teeth 11 are stably and tightly attached to fixing parts through the handles 9, the screws are prevented from inclining during embedding, the screw heads 1 can be more easily embedded into fixing objects through the auxiliary teeth, through the matching arrangement of the screw head 1, the first thread 2, the screw rod 3, the second thread 4, the third thread 5, the screw tail 6, the circular clamping groove 7, the semi-ring 8, the handle 9 and the spring 10, when the device is used, a user holds the screw through the handle 9 to enable the screw head 1 to be aligned to a part needing to be fixed, inserts a tool into the interior of the screw tail 6 and rotates, so that the screw head 1 rotates, the first thread 2 gradually penetrates deep and is provided with a thread groove in the fixed object along with the rotation embedding of the screw head 1, the second thread 4 follows the entering and expands the thread space to enable the screw rod 3 to be embedded along with the embedding of the screw head 1, finally, the thread groove is expanded and is clamped and fixed by the third thread 5, so that the screw is not easy to fall off, after the screw is fixed, the semi-ring 8 is expanded by pressing the handle 9, and the semi-ring 8 is taken down, the remote screw of supporting of user's hand prevents to cause the injury to the hand because of fixing tool follows roll-off in the spiral shell tail 6, has improved the security in the installation, facilitates for the staff.

In the utility model, through the matching arrangement among the screw head 1, the first thread 2, the screw rod 3, the second thread 4, the third thread 5, the screw tail 6, the circular clamping groove 7, the semi-ring 8, the handle 9 and the spring 10, when the device is used, a user supports the screw through the handle 9 to ensure that the screw head 1 is aligned with the part needing to be fixed, a tool is inserted into the screw tail 6 and rotates, so that the screw head 1 rotates, the first thread 2 gradually goes deep and is provided with a thread groove in the fixed object, along with the embedding of the screw head 1, the second thread 4 follows and expands the thread space to ensure that the screw rod 3 can be embedded, finally, the thread groove is expanded and the clamping is fixed by the third thread 5, so that the screw is not easy to fall off, after the screw is fixed, the semi-ring 8 is expanded by pressing the handle 9, and the semi-ring 8 can be taken down, in the installation process, the utility model discloses, through the cooperation setting between semi-ring 8, handle 9 and auxiliary tooth 11, the user supports the stable fixed position that hugs closely of auxiliary tooth 11 through handle 9 when fixing, prevents that the screw from inclining when embedding, and can make spiral shell head 1 more easily embed the fixed object through auxiliary tooth 11, through the setting of hexagon draw-in groove 13 and cross draw-in groove 14, makes the staff can fix the screw with different tools, can have multiple choices under the condition that the tool is not enough, provides convenience for the staff to install the screw, through the setting of gasket 12, makes the screw when fixing, is difficult for causing the damage to the fixed object, and protecting the fixed object.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a self-tapping screw, includes spiral shell head (1), its characterized in that, the surface of spiral shell head (1) is provided with first screw thread (2), the one end fixedly connected with screw rod (3) of spiral shell head (1), one side of screw rod (3) is provided with second screw thread (4), the opposite side of screw rod (3) is provided with third screw thread (5), the one end fixed connection spiral shell tail (6) of screw rod (3), circular draw-in groove (7) have been seted up to the surface of spiral shell tail (6), the inside joint of circular draw-in groove (7) has semi-ring (8), the one end fixedly connected with handle (9) of semi-ring (8), one side of handle (9) is provided with spring (10).

2. A self-tapping screw as defined in claim 1, wherein an auxiliary tooth (11) is provided at one end of said screw head (1), a washer (12) is fitted over the outer surface of said screw (3), and the diameter of said washer (12) is greater than the diameter of said screw tail (6).

3. A self-tapping screw as claimed in claim 1, wherein a hexagonal locking groove (13) is formed in the interior of the screw shank (6), and a cross locking groove (14) is formed in the bottom of the hexagonal locking groove (13).

4. A self-tapping screw as defined in claim 1, wherein said half rings (8) are two in number, a handle (9) is fixedly connected to one end of each of said two half rings (8), and the inner diameter of said half rings (8) is slightly larger than the inner diameter of said circular slot (7).

5. A self-tapping screw as defined in claim 2, wherein said auxiliary teeth (11) are four in number, and four of said auxiliary teeth (11) are provided in a rectangular array at one end of said screw head (1).

6. A self-tapping screw according to claim 2, wherein said washer (12) has a thickness of 0.3 cm.