A threaded fastener suitable for installation in narrow spaces

Abstract

The present invention discloses a threaded fastener suitable for easy installation in a narrow space, comprising a bolt, a nut and a crowbar, wherein one end of the threaded rod is provided with a ratchet, and the other end of the threaded rod is provided with an external thread, and the nut comprises an upper nut and a lower nut that are fixedly connected, the upper nut being smaller than the lower nut, and an annular groove is provided along the middle of the outer wall of the lower nut, an annular clamping groove is provided, and a moving block is slidably clamped in the clamping groove, and a hook ring is provided on the side wall of the moving block facing the outside, and two clamping grooves 2 are provided on each side outer wall of the lower nut corresponding to the groove, and a square through hole is provided below the side wall of the lower nut, and a rotating plate is placed in the square through hole, the tail end of the adjusting plate 1 in the rotating plate is connected to the spring, and the other end of the spring is connected to the side wall near the outside of the square through hole; the present invention can fix the threaded fastener according to different narrow spaces, and solves the problem that the fastener is not easily separated because it is not subjected to much force in a narrow space.

Description

Technical Field

[0001] The invention relates to a threaded fastener suitable for installation in a narrow space and belongs to the technical field of fastener production. Background Art

[0002] Bolts and nuts are commonly used fasteners, and are widely used in various fields and occasions. When assembly occurs in a small space, it is often difficult to apply force to the fasteners to successfully install them because the space is insufficient and the arms and tools cannot reach in. Even after the fasteners are installed, they are easy to fall off because the force applied in the small space is not strong enough. Therefore, we propose a threaded fastener that is suitable for installation in small spaces. Summary of the Invention

[0003] In order to address the deficiencies of the prior art, the present invention provides a threaded fastener that is suitable for installation in a narrow space. According to the situation that the fastener is not easy to be tightened under force in a narrow space, the nut is further improved, and the nut is tightened with force applied by a crowbar. A ratchet is provided on the bolt and a rotating plate is provided on the nut. If the nut falls off to the ratchet, the rotating plate will abut against the ratchet under the action of a spring, making the nut less likely to fall off.

[0004] The technical solution adopted in the present invention is:

[0005] A threaded fastener suitable for installation in a narrow space, comprising a bolt, a nut and a crowbar, the bolt comprising a nut and a threaded rod, the threaded rod being provided with a ratchet at one end away from the nut, an external thread being provided on the rod body of the threaded rod away from the ratchet, the nut comprising an upper nut and a lower nut fixedly connected, the upper nut and the lower nut being regular hexagonal nuts, the upper nut being smaller than the lower nut, and the upper nut and the lower nut being coaxially arranged, an internal thread matching the external thread being provided at the center of the upper nut and the lower nut, an annular groove being provided along the middle of the outer wall of the lower nut, an annular clamping groove being provided in the groove, a moving block being slidably clamped in the clamping groove, the A hook ring is provided on the side wall of the moving block facing the outside, and two card slots 2 are provided on the outer wall of each side of the lower nut corresponding to the groove, and a square through hole is provided at the lower position of either side wall of the lower nut, and the square through hole passes through the outer wall of the lower nut to the internal thread, and a rotating plate is placed in the square through hole, and the side of the rotating plate is Y-shaped. The rotating plate includes a straight plate, an adjusting plate 1 and an adjusting plate 2, and is rotatably connected to the square through hole by a rotating shaft at the intersection of the straight plate, the adjusting plate 1 and the adjusting plate 2. The adjusting plate 1 is provided on the inner side of the adjusting plate 2, and the tail end of the adjusting plate 1 is connected to one end of the spring, and the other end of the spring is connected to the side wall close to the outside of the square through hole.

[0006] As a further preferred embodiment of the present invention, the second clamping groove penetrates from the outer wall of the lower nut into the groove at an angle of 20 degrees.

[0007] As a further preferred embodiment of the present invention, the lower end surface of the lower nut is provided with anti-slip stripes, which increase the friction between the bolt and the nut and reduce the possibility of the nut falling off.

[0008] As a further preferred embodiment of the present invention, an anti-slip washer is sleeved between the bolt and the nut to increase the tightness between the bolt and the nut.

[0009] As a further preference of the present invention, a hook is provided at the top of the crowbar, and the diameter of the crowbar body is less than or equal to the size of the second slot; the hook on the crowbar hooks the hook ring on the movable block, and the body of the crowbar is placed in the second slot, and force is applied to the second slot to tighten the nut as a whole. Every time the nut is screwed to a certain position and it is difficult to apply force, the hook drags the movable block a certain distance to the next second slot, and the body of the crowbar is placed in the second slot again to apply force. The hook hooking the hook ring ensures that in a narrow space where the arm cannot reach, the crowbar hooks the hook ring to perform preliminary installation of the nut and the bolt, and the crowbar is not easy to fall off when further force is applied for installation, and it is easy to continue to apply force to the nut.

[0010] As a further preference of the present invention, the spring is in a stretched state; the spring in the stretched state can pull the adjustment plate outward, and the straight plate is then tilted inward by the force, and the straight plate can rest against the ratchet to prevent the nut from falling off.

[0011] The beneficial effects of the present invention are that the narrow space is divided into vertical narrow spaces up and down and narrow spaces left and right, front and back. According to different usage environments, in the vertical narrow space up and down, the arm cannot be extended into and it is difficult to perform preliminary installation and force tightening of the fastener. By hooking the hook on the crowbar to the hook ring on the moving block on the nut, the crowbar can be held to extend the nut into the narrow space for preliminary installation, and then the crowbar is used to apply force to the second slot on the nut, thereby applying force to the nut, so that the nut and the bolt are tightened; in the narrow space left and right, front and back, by applying force to the smaller upper nut on the nut and tightening it, the entire nut can be driven to be tightened. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the structure of the nut in the present invention;

[0013] Figure 2 for Figure 1 A cross-sectional view along the A-A1 direction;

[0014] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0015] Figure 4Schematic diagram of the structure of the bolt in the present invention;

[0016] Figure 5 Schematic diagram of the structure of the crowbar in the present invention;

[0017] Figure 6 It is a bottom view of the nut in the present invention. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1-6 As shown: This embodiment is a threaded fastener suitable for installation in a narrow space, including a bolt 1, a nut 2 and a crowbar 3. The bolt 1 includes a nut 4 and a threaded rod 5. The end of the threaded rod 5 away from the nut 4 is provided with a ratchet 6. The rod body of the threaded rod 5 away from the ratchet 6 is provided with an external thread 7. The nut 2 includes an upper nut 8 and a lower nut 9 that are fixedly connected. The upper nut 8 and the lower nut 9 are both regular hexagonal nuts. The size of the upper nut 8 is smaller than that of the lower nut 9, and the upper nut 8 and the lower nut 9 are coaxially arranged. An internal thread 10 that matches the external thread 7 is provided at the center of the upper nut 8 and the lower nut 9. An annular groove 11 is provided along the middle of the outer wall of the lower nut 9, and an annular card groove 12 is provided in the groove 11. A moving block 13 is slidably connected in the card groove 12. A hook ring 14 is provided on the side wall of the block 13 facing the outside, and two card grooves 15 are provided on each side outer wall of the lower nut 9 corresponding to the groove 11. A square through hole 16 is provided at the lower position of either side wall of the lower nut 9. The square through hole 16 passes through the outer wall of the lower nut 9 to the internal thread, and a rotating plate is placed in the square through hole 16. The side of the rotating plate is Y-shaped, and the rotating plate includes a straight plate 18, an adjusting plate 19 and an adjusting plate 20. The straight plate 18, the adjusting plate 19 and the adjusting plate 20 are rotatably connected in the square through hole 16 by a rotating shaft 21 at the intersection of the straight plate 18, the adjusting plate 19 and the adjusting plate 20. The adjusting plate 19 is provided on the inner side of the adjusting plate 20, and the tail end of the adjusting plate 19 is connected to one end of the spring 22. The other end of the spring 22 is connected to the side wall near the outside of the square through hole 16.

[0020] In this embodiment, the second clamping groove 15 penetrates from the outer wall of the lower nut 9 into the groove 11 at an angle of 20 degrees.

[0021] In this embodiment, the lower end surface of the lower nut 9 is provided with anti-slip stripes 23 , which increase the friction between the bolt 1 and the nut 2 and reduce the possibility of the nut 2 falling off.

[0022] In this embodiment, an anti-slip washer is sleeved between the bolt 1 and the nut 2 to increase the tightness between the bolt 1 and the nut 2.

[0023] In this embodiment, a hook 24 is provided at the top of the crowbar 3, and the diameter of the crowbar 3 is less than or equal to the size of the second slot 15; the hook 24 on the crowbar 3 hooks the hook ring 14 on the moving block 13, and the stick body of the crowbar 3 is placed in the second slot 15, and force is applied to the second slot 15 to tighten the nut 2 as a whole. Every time the nut 2 is screwed to a certain position and it is difficult to apply force, the hook 24 drags the moving block 13 a certain distance to the next second slot 15, and the stick body of the crowbar 3 is placed in the second slot 15 again to apply force. The hook 24 hooks the hook ring 14 to ensure that in a narrow space where the arm cannot reach, the crowbar 3 hooks the hook ring 14 to perform a preliminary installation of the nut 2 and the bolt 1, and the crowbar 3 is not easy to fall off when further installation and force are applied, and it is easy to continue to apply force to the nut 2.

[0024] In this embodiment, the spring 22 is in a stretched state; the spring 22 in the stretched state can pull the adjustment plate 19 outward, at which time the straight plate 18 is forced to tilt inward, and the straight plate 18 can rest on the ratchet 6 to prevent the nut 2 from falling off.

[0025] The threaded fastener described in this embodiment is suitable for installation in a narrow space. When reinforcing an object in a narrow space, the arm cannot be stretched to perform the preliminary installation of the nut 2 and the bolt 1. The hook of the crowbar 3 is hooked on the hook ring 14 on the moving block 13 inside the groove 11 of the nut 2. The crowbar 3 is stretched into the narrow space to perform the preliminary installation of the nut 2 and the bolt 1. Then, the stick body of the crowbar 3 is placed in the second slot 15 where force is easily applied. By applying force to the second slot 15, the nut 2 is tightened as a whole. Every time the nut 2 is screwed to a certain position where it is difficult to apply force, the crowbar 3 is taken out from the second slot 15 and placed in the next second slot 15 where force is applied. The hook 24 is dragged to move The block 13 moves a certain distance to the next slot 2 15, and the stick body of the crowbar 3 is put into the slot 2 15 again to apply force, which ensures that the crowbar 3 is not easy to fall off when further installation and force is applied, and it is easy to continue to apply force to the nut 2 until the bolt 1 and the nut 2 are installed; when reinforcing an object in a small space in front, behind, left and right of the nut side wall, pliers or a wrench are used to clamp the upper nut 8 and rotate and tighten it. The upper nut 8 is fixedly connected to the lower nut 9, and the upper nut 8 drives the lower nut 9 to rotate together to the tightened state. The spring 22 in the tension state on the lower nut 9 can pull the adjusting plate 19 outward. At this time, the straight plate 18 is forced to tilt inward, and the straight plate 18 can rest on the ratchet 6 to prevent the nut 2 from falling off.

[0026] Narrow spaces are divided into vertical narrow spaces up and down and narrow spaces left and right, front and back. According to different usage environments, in narrow spaces up and down, the arms cannot be extended and it is difficult to perform preliminary installation and force tightening of fasteners. By hooking the hook on the crowbar to the hook ring on the moving block on the nut, the crowbar can be held to insert the nut into the narrow space for preliminary installation, and then the crowbar is used to apply force to the second slot on the nut, thereby applying force to the nut and tightening the nut and the bolt; in narrow spaces left and right, front and back, by applying force to the smaller upper nut on the nut and tightening it, the entire nut can be driven to be tightened.

[0027] The above is only a preferred embodiment of the patent of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the patent of the present invention. These improvements and modifications should also be regarded as the scope of protection of the patent of the present invention.

Claims

1. A threaded fastener suitable for installation in a narrow space, characterized by: The invention comprises a bolt (1), a nut (2) and a crowbar (3), wherein the bolt (1) comprises a nut (4) and a threaded rod (5), wherein one end of the threaded rod (5) away from the nut (4) is provided with a ratchet (6), and an external thread (7) is provided on the rod body of the threaded rod (5) away from the ratchet (6), and the nut (2) comprises an upper nut (8) and a lower nut (9) which are fixedly connected, wherein the upper nut (8) and the lower nut (9) are both regular hexagonal nuts, wherein the size of the upper nut (8) is smaller than that of the lower nut (9), and the upper nut (8) is ) is coaxially arranged with the lower nut (9), and an internal thread (10) adapted to the external thread (7) is provided at the center of the upper nut (8) and the lower nut (9), and an annular groove (11) is provided along the middle of the outer wall of the lower nut (9), and an annular clamping groove (12) is provided in the groove (11), and a moving block (13) is slidably clamped in the clamping groove (12), and a hook ring (14) is provided on the side wall of the moving block (13) facing the outside, and each side of the outer wall of the lower nut (9) corresponding to the groove (11) is provided with a hook ring (14). Two card slots (15) are provided on the wall, and a square through hole (16) is provided at the lower position of any side wall of the lower nut (9). The square through hole (16) passes through the outer wall of the lower nut (9) to the internal thread. A rotating plate is placed in the square through hole (16). The side surface of the rotating plate is Y-shaped. The rotating plate includes a straight plate (18), an adjusting plate (19) and an adjusting plate (20). The straight plate (18), the adjusting plate (19) and the adjusting plate (20) are rotated at the intersection point by a rotating shaft (21). The adjusting plate (19) is movably connected in the square through hole (16), the adjusting plate (1) is arranged on the inner side of the adjusting plate (20), the tail end of the adjusting plate (19) is connected to one end of the spring (22), and the other end of the spring (22) is connected to the side wall near the outside of the square through hole (16); the clamping groove (15) passes through the outer wall of the lower nut (9) into the groove (11) at an angle of 20 degrees; the top of the crowbar (3) is provided with a hook (24), and the diameter of the crowbar (3) is less than or equal to the size of the clamping groove (15).

2. A threaded fastener suitable for installation in a narrow space according to claim 1, characterized in that: The lower end surface of the lower nut (9) is provided with anti-slip stripes (23).

3. The threaded fastener suitable for installation in a narrow space according to claim 1, characterized in that: An anti-slip washer is sleeved between the bolt (1) and the nut (2).

4. The threaded fastener suitable for installation in a narrow space according to claim 1, characterized in that: The spring (22) is in a stretched state.

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