Self-tapping external thread integrated double-end screw
By adopting staggered double threads and protective structures in the self-tapping screws, the problem of damage to the connector caused by existing self-tapping screws is solved, achieving a more stable assembly process and a lower risk of damage.
Patent Information
- Application Number
- CN202420945604.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing self-tapping screws have only one self-tapping thread, which can easily cause the connection to break or slip wire during assembly, and the damage rate is high.
A self-tapping external thread integrated double-head screw is designed, using the first thread and the second thread interlaced, combined with elastic protective sleeves, rubber pads, magnets and other structures to disperse the extrusion pressure and enhance tool adaptability, reducing connection damage probability.
With double thread fit and protection structure, the squeeze pressure of the connector is reduced, the chance of damage is reduced, and the screw in stability and flexibility of use of screws are improved.
Smart Images
Figure CN222208545U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of screws, in particular to a self-tapping external thread integrated double-head screw. Background Art
[0002] Self-tapping screws are fasteners with a special thread design. Their biggest feature is "self-tapping". This means that when connecting, the self-tapping screw can use its own thread to directly tap out threads that match the screw in the pre-connected material, thereby achieving a fastened connection. This feature means that self-tapping screws do not need to be pre-drilled or tapped during assembly, greatly improving work efficiency.
[0003] The current self-tapping screws are generally only provided with one section of self-tapping thread. When using the self-tapping screw to tap into the connecting part, it is easy to apply excessive extrusion pressure to the connecting part, causing the connecting part to rupture and damage. In addition, if there is only one section of self-tapping thread, if the connecting part is relatively hard, then the screwing force of this section of self-tapping thread is insufficient, and it is easy to slip, causing damage to the connecting part. Utility Model Content
[0004] In order to overcome the disadvantage that the existing self-tapping screws have only one section of self-tapping thread, which easily leads to damage of the connecting piece, the technical problem of the utility model is to provide a self-tapping external thread integrated double-head screw that can disperse the extrusion force and reduce the probability of damage to the connecting piece.
[0005] Technical solution: A self-tapping external thread integrated double-head screw, including a rod body, a first thread, a second thread, a screw head and a hexagonal socket. The upper part of the rod body is a straight rod structure, the lower part of the rod body is a spike structure, the top of the rod body is connected to the screw head, and a hexagonal socket is arranged in the middle position of the top of the screw head. The screw head is rotated using an hexagonal wrench in conjunction with the hexagonal socket. The outer side of the rod body is provided with a first thread and a second thread, the second thread is shorter than the first thread, the first thread extends from the lower spike structure of the rod body to the middle of the upper straight rod structure, the second thread is located at the lower spike structure of the rod body, and the second thread is staggered with the first thread.
[0006] In addition, it is particularly preferred that an external hexagonal structure is provided on the outer side of the screw head, and the screw head is rotated using an external hexagonal wrench.
[0007] In addition, it is particularly preferred that a cross slot is provided in the middle of the screw head, the cross slot is located below the hexagonal socket, and a cross screwdriver is used to cooperate with the cross slot to rotate the screw head.
[0008] In addition, it is particularly preferred that one of the straight grooves of the cross groove extends to both ends to form an extension groove, which is convenient for using a flat-blade screwdriver to cooperate with the extension groove to rotate the screw head.
[0009] In addition, it is particularly preferred that a protective sleeve is further included. The outer side of the rod body is provided with the protective sleeve, the protective sleeve is elastic, and is sleeved on the outer side of the rod body to protect the first thread and the second thread.
[0010] In addition, it is particularly preferred that a rubber pad is also included. The bottom of the screw head is connected to the rubber pad. The rubber pad can protect the connecting piece and increase the friction between the connecting piece and the connecting piece, thereby increasing the stability of the screw fixation.
[0011] In addition, it is particularly preferred that a rubber strip is also included. The rubber strip is embedded in the side of the hexagonal slot. The rubber strip can wrap the hexagonal wrench to reduce the probability of the hexagonal wrench falling off from the hexagonal slot.
[0012] In addition, it is particularly preferred that a magnet is also included. A magnet is arranged at the bottom of the cross slot. The magnet can increase the adsorption force between the screwdriver and the screwdriver. When the magnetic force of the screwdriver becomes smaller, the screwdriver can also adsorb the screw well through the arrangement of the magnet, thereby facilitating the use of the screw.
[0013] The utility model reduces the squeezing force of the rod on the connecting piece by setting the first thread and the second thread, has a protective effect on the connecting piece, and prevents the screw from squeezing the connecting piece and causing rupture during the movement. In addition, by setting the first thread and the second thread, the double thread cooperates, making it easier to screw the screw into the connecting piece, reducing the probability of damage to the connecting piece. The setting of the screw head, the inner hexagonal groove, the cross groove and the extension groove of the external hexagonal structure can adapt to different tools to turn the screw, thereby enhancing the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0015] Figure 2 The utility model is a schematic diagram of the connection structure of the screw head, rubber pad and rubber strip.
[0016] Figure 3 It is a structural schematic diagram of the rod body, the first thread and the second thread of the utility model.
[0017] Figure 4 It is a structural schematic diagram of the screw head, hexagonal socket and cross socket of the utility model.
[0018] Among them, the above-mentioned drawings include the following figure marks: 1. rod body, 2. first thread, 3. second thread, 4. screw head, 5. hexagonal slot, 6. cross slot, 7. extension slot, 8. protective cover, 9. rubber pad, 10. rubber strip, 11. magnet. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] A self-tapping external thread integrated double-head screw, such as Figure 1-4 As shown, it includes a rod body 1, a first thread 2, a second thread 3, a screw head 4 and an inner hexagonal groove 5. The upper part of the rod body 1 is a straight rod structure, the lower part of the rod body 1 is a spike structure, the top of the rod body 1 is connected to the screw head 4, the outer side of the screw head 4 is provided with an outer hexagonal structure, the screw head 4 is rotated with an outer hexagonal wrench, the inner hexagonal groove 5 is provided at the middle position of the top of the screw head 4, the inner hexagonal wrench is used to cooperate with the inner hexagonal groove 5 to rotate the screw head 4, the outer side of the rod body 1 is provided with a first thread 2 and a second thread 3, the second thread 3 is The first thread 2 is short in length, and extends from the spike structure at the bottom of the rod body 1 to the middle of the upper straight rod structure. The second thread 3 is located at the spike structure at the bottom of the rod body 1. The second thread 3 and the first thread 2 are staggered. A cross slot 6 is provided in the middle of the screw head 4, and the cross slot 6 is located below the hexagonal slot 5. A cross screwdriver is used to cooperate with the cross slot 6 to rotate the screw head 4. One of the straight slots of the cross slot 6 extends to both ends to form an extension slot 7, which is convenient for using a flat-blade screwdriver to cooperate with the extension slot 7 to rotate the screw head 4.
[0021] like Figure 1 As shown, a protective cover 8 is also included. The outer side of the rod body 1 is covered with the protective cover 8. The protective cover 8 is elastic and is covered on the outer side of the rod body 1 to protect the first thread 2 and the second thread 3.
[0022] like Figure 2 As shown, a rubber pad 9 is also included. The bottom of the screw head 4 is connected to the rubber pad 9. The rubber pad 9 can protect the connecting piece and increase the friction between the connecting piece and the connecting piece, thereby increasing the stability of the screw fixation.
[0023] like Figure 1 and Figure 2 As shown, a rubber strip 10 is also included. The rubber strip 10 is embedded in the side of the hexagonal slot 5. The rubber strip 10 can wrap the hexagonal wrench to reduce the probability of the hexagonal wrench falling off from the hexagonal slot 5.
[0024] like Figure 1 and Figure 2As shown, a magnet 11 is also included. The magnet 11 is arranged at the bottom of the cross slot 6. The magnet 11 can increase the adsorption force between the screwdriver and the screwdriver. When the magnetic force of the screwdriver becomes smaller, the screwdriver can also adsorb the screw well through the arrangement of the magnet 11, thereby facilitating the use of the screw.
[0025] The screw head 4 with an external hexagonal structure is convenient for turning the screw with an external hexagonal wrench, while the internal hexagonal slot 5 is convenient for turning the screw with an internal hexagonal wrench. The cross slot 6 and the extension slot 7 are suitable for turning the screw with a cross screwdriver and a flat-head screwdriver. In this way, different tools can be used to turn the screw according to actual conditions, thereby enhancing the flexibility of use. By setting the first thread 2 and the second thread 3, when turning the screw, the first thread 2 can be slowly screwed into the connecting piece, so that the screw is slowly screwed into the connecting piece, and the rod body 1 will also apply an extrusion force to the connecting piece. By setting the second thread 3, the connecting piece can be rotated and extruded, thereby reducing the extrusion force of the rod body 1 on the connecting piece, which has a protective effect on the connecting piece and prevents the screw from squeezing the connecting piece and causing it to rupture during the movement. In addition, by setting the first thread 2 and the second thread 3, the double thread cooperates, making it easier for the screw to be screwed into the connecting piece.
[0026] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.
Claims
1. A self-tapping external thread integrated double-head screw, characterized in that: The invention comprises a rod body (1), a first thread (2), a second thread (3), a screw head (4) and a hexagonal socket (5); the upper part of the rod body (1) is a straight rod structure; the lower part of the rod body (1) is a spike structure; the top of the rod body (1) is connected with the screw head (4); the middle position of the top of the screw head (4) is provided with a hexagonal socket (5); the outer side of the rod body (1) is provided with a first thread (2) and a second thread (3); the second thread (3) is shorter than the first thread (2); the first thread (2) extends from the spike structure at the lower part of the rod body (1) to the middle part of the upper straight rod structure; the second thread (3) is located at the spike structure at the lower part of the rod body (1); the second thread (3) and the first thread (2) are arranged in an alternating manner.
2. A self-tapping external thread integrated double-head screw as claimed in claim 1, characterized in that: An external hexagonal structure is arranged on the outer side of the screw head (4).
3. A self-tapping external thread integrated double-head screw as claimed in claim 1, characterized in that: A cross groove (6) is arranged in the middle of the screw head (4), and the cross groove (6) is located below the hexagonal groove (5).
4. A self-tapping external thread integrated double-head screw as claimed in claim 3, characterized in that: One of the straight grooves of the cross groove (6) extends to both ends to form an extension groove (7).
5. The self-tapping external thread integrated double-head screw according to claim 1, characterized in that: It also includes a protective sleeve (8), which is sleeved on the outside of the rod body (1); the protective sleeve (8) is elastic and sleeved on the outside of the rod body (1).
6. The self-tapping external thread integrated double-head screw according to claim 1, characterized in that: It also includes a rubber pad (9), and the bottom of the screw head (4) is connected to the rubber pad (9).
7. The self-tapping external thread integrated double-head screw according to claim 1, characterized in that: It also includes a rubber strip (10), and the rubber strip (10) is embedded in the side surface of the hexagonal groove (5).
8. The self-tapping external thread integrated double-head screw according to claim 3, characterized in that: It also includes a magnet (11), and the magnet (11) is arranged at the bottom of the cross slot (6).