A kind of anti-loosening bolt

Abstract

The utility model relates to an anti-loosening bolt, including a bolt body and a spread cone bolt, wherein the bolt body is provided with a conical inner screw hole, and a plurality of slots are evenly spaced on the outer wall of the conical inner screw hole, and the screw portion provided with the conical inner screw hole is a conical structure with the top spread outward, and the spread cone bolt cooperates with the thread of the conical inner screw hole. The utility model provides a conical inner screw hole on the screw of the conical structure, and provides slots on the conical inner screw hole. When connected with a nut, the screw at the conical inner screw hole will deform inward, so that the screw at the conical inner screw hole will press the nut outward, thereby achieving an anti-loosening effect. In addition, after the nut is installed in place, the spread cone bolt is connected to the conical inner screw hole, so that the screw at the conical inner screw hole remains in a spread-out state, thereby ensuring an anti-loosening effect.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to an anti-loosening bolt. Background Art

[0002] Equipment vibration is very common in engineering environments, but if you don't pay attention, it will often cause equipment vibration, component damage, and even major accidents. Traditional equipment installation usually uses friction to prevent loosening. Commonly used anti-loosening methods include flat washers and spring washers. This method is widely used in parts that require frequent installation. However, in actual use, bolts with spring washers still have poor anti-loosening effects. Utility Model Content

[0003] In view of the deficiencies in the background technology, the utility model provides an anti-loosening bolt.

[0004] The technical solution adopted by the utility model is: an anti-loosening bolt, including a bolt body and an expanded cone bolt, the bolt body is provided with a conical internal screw hole, a plurality of slots are evenly spaced on the outer wall of the conical internal screw hole, the screw portion provided with the conical internal screw hole is a conical structure with the top expanded outward, and the expanded cone bolt cooperates with the thread of the conical internal screw hole.

[0005] Furthermore, the expanded cone bolt has an equilateral hexagonal screw head, and a slot is provided on the screw head.

[0006] Furthermore, a countersunk hole for accommodating a screw head is provided at the end of the conical inner screw hole.

[0007] Furthermore, the number of the grooves is 4-8.

[0008] Furthermore, the bolt body includes a hexagonal screw head, a bare rod section and a tapered section, and the tapered inner screw hole is arranged in the tapered section.

[0009] Furthermore, the hexagonal screw head is connected with a spiral spring piece, and the spiral spring piece is connected with a pressure ring.

[0010] Furthermore, a plurality of convex points are evenly distributed on the surface of the pressure ring.

[0011] The beneficial effect of the utility model is that the utility model provides a conical internal screw hole on the screw of the conical structure, and provides a slot on the conical internal screw hole. When connected with the nut, the screw at the conical internal screw hole will deform inward, so that the screw at the conical internal screw hole and the nut will be pressed outward to each other, thereby achieving an anti-loosening effect. In addition, after the nut is installed in place, the expansion cone bolt is connected to the conical internal screw hole, so that the screw at the conical internal screw hole remains in an outward expansion state, thereby ensuring the anti-loosening effect.

[0012] In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages.

[0013] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a schematic diagram of the structure of the bolt body.

[0016] Figure 1-2 In: 1. Bolt body; 2. Expanded cone bolt; 3. Conical inner screw hole; 4. Slot; 7. Screw head; 8. Slotted groove; 9. Countersunk hole; 10. Hexagonal screw head; 11. Bare rod section; 12. Conical section; 13. Spiral spring; 14. Press ring; 15. Bump. DETAILED DESCRIPTION

[0017] 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 of 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.

[0018] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] The utility model provides an anti-loosening bolt.

[0020] In this embodiment, refer to Figure 1-2 The anti-loosening bolt includes a bolt body 1 and an expanded cone bolt 2. The bolt body 1 is provided with a conical internal screw hole 3. A plurality of slots 4 are evenly spaced on the outer wall of the conical internal screw hole 3. The screw portion provided with the conical internal screw hole is a conical structure with the top expanded outward, and the expanded cone bolt is threadedly matched with the conical internal screw hole.

[0021] In the above technical solution, a conical internal screw hole is provided on the screw of the conical structure, and a slot is provided on the conical internal screw hole. When connected with the nut, the screw at the conical internal screw hole will be deformed inward, so that the screw at the conical internal screw hole and the nut will be pressed outward to each other, thereby achieving an anti-loosening effect. In addition, after the nut is installed in place, the expansion cone bolt is connected to the conical internal screw hole, so that the screw at the conical internal screw hole remains in an outward expansion state, thereby ensuring the anti-loosening effect.

[0022] Specifically, the expanded cone bolt has an equilateral hexagonal screw head 7, and a slot 8 is provided on the screw head; a countersunk hole 9 for accommodating the screw head is provided at the end of the conical inner screw hole; and the number of the slots is 4-8.

[0023] In the above technical solution, by arranging a hexagonal screw head and a slotted groove on the expansion cone bolt, it is convenient to disassemble the expansion cone bolt.

[0024] Specifically, the bolt body includes a hexagonal screw head 10, a bare rod section 11 and a conical section 12, and the conical internal screw hole is arranged in the conical section; the hexagonal screw head is connected with a spiral spring piece 13, and the spiral spring piece is connected with a pressure ring 14; the surface of the pressure ring is evenly distributed with a plurality of protrusions 15.

[0025] In the above technical solution, by arranging a spiral spring sheet and a pressure ring, the pressure sheet can be pressed against the surface of the fastener during tightening to prevent the bolt from loosening, thereby further improving the anti-loosening effect. In addition, adding protrusions to the surface of the pressure ring can increase friction and improve the anti-loosening effect.

[0026] Technical personnel should note: Although the utility model has been described according to the above specific implementation methods, the utility model concept of the utility model is not limited to this utility model. Any modification using the utility model concept will be included in the scope of protection of this patent right.

Claims

1. A locking bolt, comprising a bolt body, characterized in that: It also includes an open cone bolt, wherein a conical internal screw hole is provided on the bolt body, and a plurality of slots are evenly spaced on the outer wall of the conical internal screw hole. The screw portion provided with the conical internal screw hole is a conical structure with the top open outward, and the open cone bolt cooperates with the thread of the conical internal screw hole.

2. The anti-loosening bolt according to claim 1, characterized in that: The expanded cone bolt has an equilateral hexagonal screw head, and a slot is arranged on the screw head.

3. The anti-loosening bolt according to claim 2, characterized in that: The end of the conical inner screw hole is provided with a countersunk hole for accommodating the screw head.

4. The anti-loosening bolt according to claim 1, characterized in that: The number of grooves is 4-8.

5. The anti-loosening bolt according to claim 1, characterized in that: The bolt body comprises a hexagonal screw head, a polished rod section and a tapered section, and the tapered inner screw hole is arranged in the tapered section.

6. The anti-loosening bolt according to claim 5, characterized in that: The hexagonal screw head is connected with a spiral spring piece, and the spiral spring piece is connected with a pressure ring.

7. The anti-loosening bolt according to claim 6, characterized in that: A plurality of convex points are evenly distributed on the surface of the pressure ring.

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