A screw with high bending resistance

Abstract

The utility model discloses a screw with high bending resistance, and particularly relates to the technical field of screws, which comprises a screw rod and a screw head mounted on the top of the screw rod, a plurality of reinforcing members for enhancing the bending resistance are arranged on the bottom of the screw rod, and the reinforcing members are arranged in a ring array, each reinforcing member comprises an assembly groove formed in the bottom of the screw rod. The utility model forms multiple support points at the bottom of the screw rod by screwing the shaping rods into the assembly grooves, increases the moment of inertia of the cross section, thereby improving the bending strength of the screw rod, the ring array of the shaping rods disperses the concentrated load to multiple points, reduces the local stress concentration of the screw rod, balances the tensile stress and the compressive stress generated by the bending moment, avoids the structural imbalance caused by one-way stress, thereby improving the overall strength and the bending resistance, and the multiple shaping rods are arranged inside the bottom end of the screw rod, so that the external structure of the screw rod is continuous and complete, thereby ensuring the use performance of the screw rod.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, and more specifically to a screw with strong resistance to bending. Background Technology

[0002] In the field of mechanical connections, screws are widely used as basic fasteners in the assembly of various equipment, structures, and products. Screws typically consist of a metal shank, threads, and a head, and are tightened by rotating them into pre-machined threaded holes or by using them with a nut.

[0003] As shown in the prior art of publication CN214888246U, although the prior art strengthens the cooperation between the column and the first fixing rod and the second fixing rod, making the present invention more resistant to bending stress and achieving a more beneficial effect of bending resistance; the first fixing groove is provided at one end of the first fixing rod, increasing the connection structure between the first fixing rod and the second fixing rod, and strengthening the structural stability of the present invention; the setting of the third fixing rod and the fourth fixing rod further helps to share the bending stress on the screw; the third fixing groove is provided at one end of the third fixing rod, increasing the connection structure between the third fixing rod and the fourth fixing rod, and strengthening the structural stability of the present invention; the first fixing rod, the second fixing rod, the third fixing rod and the fourth fixing rod are set at 90°, so that the four fixing rods share the bending stress on the screw to the maximum extent; the threaded connection of the first fixing groove and the second fixing rod, the third fixing groove and the fourth fixing rod further increases the connection stability between the above two connection structures, achieving the beneficial effect of a firm connection. However, in this prior art, both the first and second fixing rods are located outside the screw, which results in a discontinuous and incomplete overall structure of the screw's exterior, thus affecting the screw's assembly performance and usability. Utility Model Content

[0004] To overcome the aforementioned deficiencies of the prior art, this utility model provides a screw with strong bending resistance. By screwing the shaping rod into the assembly groove, multiple support points are formed at the bottom of the screw, increasing the moment of inertia of the cross section and thus improving the bending strength of the screw. At the same time, the ring-shaped array of shaping rods distributes the concentrated load to multiple points, reducing local stress concentration in the screw and balancing the tensile and compressive stresses generated by the bending moment. This avoids structural imbalance caused by unidirectional force, thereby improving the overall strength and bending performance. Furthermore, since multiple shaping rods are all located inside the bottom end of the screw, the external structure of the screw is continuous and complete, thus ensuring the performance of the screw and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a screw with strong bending resistance, comprising a screw rod and a screw head installed on the top of the screw rod, wherein the bottom of the screw rod is provided with multiple sets of reinforcing members for enhancing bending resistance, and the multiple sets of reinforcing members are distributed in a ring array;

[0006] Each set of reinforcing components includes an assembly groove at the bottom of the screw, and a detachable shaping rod is provided inside the assembly groove. The bottom of the shaping rod has an operating hole.

[0007] In a preferred embodiment, the shaping rod has an external thread on its exterior and an internal thread on one side of the assembly groove corresponding to the external thread. The shaping rod is threadedly connected to the assembly groove. The threaded connection between the shaping rod and the assembly groove can be achieved through the external thread on the shaping rod and the internal thread on the assembly groove, which facilitates the installation of the shaping rod into the assembly groove and also allows the shaping rod to be removed using the operating hole.

[0008] In a preferred embodiment, the operating hole is provided with a filler plug to prevent impurities from adhering. The filler plug seals and closes the operating hole, thereby preventing external impurities from adhering to the inside of the operating hole and improving the engagement stability between the tool and the operating hole.

[0009] In a preferred embodiment, the top of the screw head is provided with a sealing cylinder, and the bottom of the sealing cylinder is sleeved on the outside of the screw head. By sleeved on the outside of the screw head, the sealing cylinder can shield and protect the screw head, thereby preventing dust from adhering and effectively preventing damage to the screw head from collisions and impacts.

[0010] In a preferred embodiment, a support ring is provided at the bottom of the screw head. The support ring is sleeved on the outside of the top of the screw, and the inner wall of the support ring is fixed together with the outside of the top of the screw. By assembling the support ring to the outside of the screw, the contact area between the screw and the equipment can be effectively expanded, thereby dispersing the concentrated load on the screw to a larger area. This can avoid stress concentration and damage to the screw, and ensure the performance and bending strength of the screw.

[0011] In a preferred embodiment, the bottom end of the support ring is provided with a rubber ring, and the rubber ring is sleeved on the outside of the screw. The top end of the rubber ring is fixed together with the bottom of the support ring. By fixing the rubber ring to the bottom of the support ring, the support ring can enhance the friction between itself and the equipment, thereby preventing the screw from becoming loose. At the same time, it can also avoid vibration fatigue caused by loosening, reduce the risk of bending, and improve the performance and bending strength of the screw.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. By screwing the shaping rods into the assembly slot, multiple support points are formed at the bottom of the screw, increasing the moment of inertia of the cross section and thus improving the bending strength of the screw. At the same time, the ring-shaped array of shaping rods distributes the concentrated load to multiple points, reducing local stress concentration in the screw, balancing the tensile and compressive stresses generated by the bending moment, and avoiding structural imbalance caused by unidirectional force, thereby improving the overall strength and bending performance. Furthermore, since multiple shaping rods are located inside the bottom end of the screw, the external structure of the screw is continuous and complete, thus ensuring the performance of the screw.

[0014] 2. By connecting the support ring to the screw, the support ring can increase the contact area between the screw and the equipment, thereby distributing the concentrated load on the screw to a larger area. This can avoid stress concentration and damage to the screw, and ensure the performance and bending strength of the screw.

[0015] 3. By installing the rubber ring to the bottom of the support ring, the friction between the support ring and the equipment can be enhanced, thereby ensuring the stability of the screw, preventing the screw from rotating, avoiding vibration fatigue caused by loosening, reducing the risk of bending, and improving the performance and bending strength of the screw. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a bottom view of the screw of this utility model;

[0018] Figure 3 This is an exploded view of the shaping rod of this utility model;

[0019] Figure 4 This is an exploded view of the filling plug of this utility model;

[0020] Figure 5 This is a cross-sectional view of the screw of this utility model.

[0021] The attached figures are labeled as follows: 1. Screw; 2. Screw head; 3. Assembly groove; 4. Shaping rod; 5. Operating hole; 6. External thread; 7. Internal thread; 8. Filler plug; 9. Encapsulation tube; 10. Support ring; 11. Rubber ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Refer to the instruction manual appendix Figure 1-5 This utility model provides a screw with strong bending resistance, including a screw rod 1 and a screw head 2 installed on the top of the screw rod 1. The bottom of the screw rod 1 is provided with multiple sets of reinforcing members to enhance bending resistance, and the multiple sets of reinforcing members are distributed in a ring array. Each set of reinforcing members includes an assembly groove 3 opened at the bottom of the screw rod 1. The assembly groove 3 is provided with a detachable shaping rod 4, and the bottom of the shaping rod 4 is provided with an operating hole 5.

[0024] When using the aforementioned screw 1 fastening device, the operator must first install the positioning rod into the assembly groove 3. Since the external thread 6 is machined on the outside of the shaping rod 4, and the internal thread 7 is machined on one side of the assembly groove 3 corresponding to the external thread 6, the shaping rod 4 is threadedly connected to the assembly groove 3. This allows the operator to connect with the operating hole 5 on the shaping rod 4 using a tool, and then rotate and screw the shaping rod 4 into the assembly groove 3 using the tool. This creates multiple support points at the bottom of the screw 1, increasing the moment of inertia of the cross section and thus improving the bending strength of the screw 1. At the same time, the ring-shaped array of shaping rods 4 distributes the concentrated load to multiple points, reducing local stress concentration in the screw 1, balancing the tensile and compressive stresses generated by the bending moment, and avoiding structural imbalance caused by unidirectional force. This improves the overall strength and bending performance. Furthermore, since multiple shaping rods 4 are located inside the bottom end of the screw 1, the external structure of the screw 1 is continuous and complete, thus ensuring the performance of the screw 1.

[0025] Among them, such as Figure 2-4 As shown, in order to ensure the convenience of subsequent disassembly of the shaping rod 4, it is necessary to ensure the integrity of the operating hole 5. Therefore, a filler plug 8 is provided inside the operating hole 5 to prevent impurities from adhering. The operating hole 5 is sealed by the filler plug 8 to prevent external impurities from adhering to the inside of the operating hole 5, thereby ensuring the precise engagement of the tool with the operating hole 5 and improving the stability of the tool turning the shaping rod 4 through the operating hole 5.

[0026] At the same time, such as Figure 1-3 As shown, in order to ensure the convenience of subsequent disassembly of screw 1, it is also necessary to protect screw head 2. Therefore, a sealing cylinder 9 is provided at the top of screw head 2, and the bottom end of the sealing cylinder 9 is sleeved on the outside of screw head 2. By sleeved on the outside of screw head 2, the sealing cylinder 9 can be used to shield screw head 2, preventing impurities from adhering to the inside of screw head 2, and also preventing impact from damaging screw head 2, thereby ensuring the integrity of screw head 2, and making it convenient to screw head 2 to unscrew and remove screw 1 in subsequent operations.

[0027] To improve the bending resistance of screw 1, it is necessary to increase the bearing area of ​​screw 1 and reduce the bending moment it bears. Therefore, a support ring 10 is provided at the bottom end of the screw head 2. The support ring 10 is sleeved on the outside of the top end of screw 1, and the inner wall of the support ring 10 is fixed to the outside of the top end of screw 1. Through the connection between the support ring 10 and screw 1, the support ring 10 can increase the contact area between screw 1 and equipment, thereby dispersing the concentrated load on screw 1 to a larger area. This can avoid stress concentration and damage to screw 1, ensuring the performance and bending strength of screw 1. In addition, a rubber ring 11 is provided at the bottom end of the support ring 10, and the rubber ring 11 is sleeved on the outside of screw 1. The top end of the rubber ring 11 is fixed to the bottom of the support ring 10. This can enhance the friction between screw 1 and equipment, thereby avoiding vibration fatigue caused by loosening, reducing the risk of bending, and improving the performance and bending strength of screw 1.

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screw with strong bending resistance, comprising a screw rod (1) and a screw head (2) mounted on the top of the screw rod (1), characterized in that: The bottom of the screw (1) is provided with multiple sets of reinforcing members to enhance bending resistance, and the multiple sets of reinforcing members are distributed in a ring array. Each set of reinforcing members includes an assembly groove (3) at the bottom of the screw (1), and a detachable shaping rod (4) is provided inside the assembly groove (3), with an operating hole (5) at the bottom of the shaping rod (4).

2. The screw with strong bending resistance according to claim 1, characterized in that: The shaping rod (4) has an external thread (6) machined on the outside, and the assembly groove (3) has an internal thread (7) machined on one side corresponding to the external thread (6), and the shaping rod (4) is threadedly connected to the assembly groove (3).

3. A screw with strong bending resistance according to claim 1, characterized in that: The operating hole (5) is provided with a filler plug (8) to prevent impurities from adhering.

4. A screw with strong bending resistance according to claim 1, characterized in that: The top of the screw head (2) is provided with a sealing cylinder (9), and the bottom of the sealing cylinder (9) is sleeved on the outside of the screw head (2).

5. A screw with strong bending resistance according to claim 1, characterized in that: The bottom end of the screw head (2) is provided with a support ring (10), which is sleeved on the outside of the top end of the screw (1), and the inner wall of the support ring (10) is fixed together with the outside of the top end of the screw (1).

6. A screw with strong bending resistance according to claim 5, characterized in that: The bottom end of the support ring (10) is provided with a rubber ring (11), and the rubber ring (11) is sleeved on the outside of the screw (1). The top end of the rubber ring (11) is fixed together with the bottom of the support ring (10).

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