Spring screw with buffer structure

Abstract

This utility model discloses a spring screw with a buffer structure, including a tightening cylinder, a screw body engaged within the tightening cylinder, and an anti-loosening cylinder slidably fitted within the tightening cylinder. The screw body passes through the anti-loosening cylinder, and an anti-loosening washer is provided at the bottom of the anti-loosening cylinder. A spring is disposed within the anti-loosening cylinder. A first ring is installed at the top of the inner wall of the tightening cylinder, and a second ring is provided at the top of the spring. A limiting mechanism is provided between the first and second rings. A protective cap is provided at the end of the screw body that passes through the anti-loosening cylinder. The anti-loosening washer includes two symmetrically distributed semicircular pieces that slidably fit at the bottom of the anti-loosening cylinder. The bottom of the semicircular pieces is conical and has multiple anti-loosening strips. This utility model, through the design of the tightening cylinder, screw body, anti-loosening cylinder, and anti-loosening washer, allows for disassembly and replacement when a single part is damaged, reducing the likelihood of the entire spring screw becoming unusable due to the damage of a single part.

Description

Technical Field

[0001] This utility model relates to the field of spring screw technology, and specifically to a spring screw with a buffer structure. Background Technology

[0002] A spring screw, also known as a non-detachable screw, generally consists of a handle, a screw, a socket, and a spring. As the name suggests, it is a screw that is loose but will not fall out. It is also called a non-detachable screw or a screw that will not fall out. It is widely used in power technology, switches, chassis and cabinets, and many other industries.

[0003] Currently, most spring screws are integrated, and damage to individual components can render the spring screw unusable. In particular, the surface where the anti-loosening bracket contacts the mounting point is prone to wear and corrosion, making quick replacement difficult. There is an urgent need to design a spring screw with a buffer structure to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a spring screw with a buffer structure to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A spring screw with a buffer structure includes a screwing cylinder, a screw body being snapped into the screwing cylinder, an anti-loosening cylinder being slidably fitted inside the screwing cylinder, the screw body passing through the anti-loosening cylinder, an anti-loosening washer being provided at the bottom of the anti-loosening cylinder, and a spring being provided inside the anti-loosening cylinder. A first ring is installed on the top of the inner wall of the screw cylinder, and a second ring is provided on the top of the spring. A limiting mechanism is provided between the first ring and the second ring. A protective cap is provided at one end of the screw body that passes through the anti-loosening cylinder. The anti-loosening washer includes two symmetrically distributed semicircular pieces. The semicircular pieces slide in fit at the bottom of the anti-loosening cylinder. The bottom of the semicircular pieces is conical and provided with multiple anti-loosening strips. Two fixing pins corresponding to the two semicircular pieces are provided on the anti-loosening cylinder.

[0006] Furthermore, one end of the screw body is provided with a tapered head, and the protective cap is provided with an internal thread, with one end of the screw body and the internal thread engaging.

[0007] Furthermore, the circumference of the screw cylinder is provided with anti-slip texture, the top of the screw cylinder is provided with a hexagonal groove, and the top of the screw body is provided with a cross groove.

[0008] Furthermore, a hexagonal block is provided on the top of the screw body, the hexagonal block engaging with the hexagonal slot, and the screw body passing through the hexagonal slot.

[0009] Furthermore, the bottom of the anti-loosening cylinder has two sliding grooves, and the top of each of the two semicircular pieces is provided with a slider. Both the sliding groove and the slider are T-shaped, and the sliding groove and the slider are in sliding engagement. The fixing pin corresponds to the slider.

[0010] Furthermore, the limiting mechanism includes a plurality of forward arc-shaped inclined blocks disposed at the bottom of the first ring and a plurality of reverse arc-shaped inclined blocks disposed at the top of the second ring, wherein the plurality of forward arc-shaped inclined blocks correspond to the plurality of reverse arc-shaped inclined blocks respectively.

[0011] In the above technical solution, the spring screw with a buffer structure provided by this utility model has the following advantages: By incorporating a screw-in sleeve, screw body, anti-loosening sleeve, and anti-loosening washer, the system allows for disassembly and replacement of individual damaged parts, reducing the likelihood of the entire spring bolt becoming unusable due to the damage of a single part. Furthermore, the included retaining pin secures the semicircular pieces, enabling separate disassembly and replacement without removing the screw body, thus minimizing the risk of wear and corrosion on the semicircular pieces that would hinder replacement. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 This is a schematic diagram of a spring screw structure according to an embodiment of the present invention, which has a buffer structure.

[0014] Figure 2 This is a schematic diagram of a semi-circular plate structure provided for an embodiment of a spring screw with a buffer structure according to the present invention.

[0015] Figure 3 This is a schematic diagram of the screw body structure provided for an embodiment of a spring screw with a buffer structure according to the present invention.

[0016] Figure 4 This is a schematic diagram of the limiting mechanism structure provided for an embodiment of a spring screw with a buffer structure according to the present invention.

[0017] 1. Tightening sleeve; 2. Screw body; 3. Anti-loosening sleeve; 4. Anti-loosening washer; 5. Spring; 6. First ring; 7. Second ring; 8. Restricting mechanism; 9. Protective cap; 10. Semicircular piece; 11. Anti-loosening strip; 12. Fixing pin; 13. Conical head; 14. Anti-slip texture; 15. Hexagonal groove; 16. Cross groove; 17. Hexagonal block; 18. Slide groove; 19. Slider; 20. Forward arc-shaped inclined block; 21. Reverse arc-shaped inclined block. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1-4 As shown in the figure, this utility model provides a spring screw with a buffer structure.

[0020] It includes a screw cylinder 1, a screw body 2 that is engaged inside the screw cylinder 1, an anti-loosening cylinder 3 that is slidably engaged inside the screw cylinder 1, the screw body 2 passing through the anti-loosening cylinder 3, an anti-loosening washer 4 at the bottom of the anti-loosening cylinder 3, and a spring 5 inside the anti-loosening cylinder 3. A first ring 6 is installed on the top of the inner wall of the screw cylinder 1, a second ring 7 is provided on the top of the spring 5, a limiting mechanism 8 is provided between the first ring 6 and the second ring 7, a protective cap 9 is provided at one end of the screw body 2 that passes through the anti-loosening cylinder 3, the anti-loosening washer 4 includes two symmetrically distributed semicircular pieces 10, the semicircular pieces 10 are slidably fitted on the bottom of the anti-loosening cylinder 3, the bottom of the semicircular pieces 10 is conical and provided with multiple anti-loosening strips 11, and two fixing pins 12 corresponding to the two semicircular pieces 10 are provided on the anti-loosening cylinder 3.

[0021] Reference Figure 2 In this embodiment, one end of the screw body 2 is provided with a tapered head 13, and the protective cap 9 is provided with an internal thread, with one end of the screw body 2 threadedly engaged with the internal thread. The protective cap 9 can be screwed onto one end of the screw body 2, protecting the exposed portion of the screw body 2, and allowing the tapered head 13 of the screw body 2 to better enter the mounting hole for installation and fixation.

[0022] Reference Figure 3In this embodiment, the rotating cylinder 1 has anti-slip texture 14 on its periphery, a hexagonal groove 15 on its top, and a cross groove 16 on its top. A hexagonal block 17 is provided on the top of the screw body 2, engaging with the hexagonal groove 15, allowing the screw body 2 to pass through the hexagonal groove 15. The hexagonal block 17 engages with the hexagonal groove 15, allowing the screw body 2 to pass through it. This engagement allows a hexagonal workpiece to be inserted into the hexagonal groove 15 to rotate the rotating cylinder 1 and the screw body 2, or the cross groove 16 to be used to rotate them. The spring 5 inside the anti-loosening cylinder 3 pushes the rotating cylinder 1, further tightening the engagement between the hexagonal block 17 and the hexagonal groove 15.

[0023] Reference Figure 3 In this embodiment, the bottom of the anti-loosening cylinder 3 has two sliding grooves 18, and the top of each of the two semicircular pieces 10 is provided with a slider 19. Both the sliding grooves 18 and the sliders 19 are T-shaped, and the sliding grooves 18 and the sliders 19 are slidably engaged. The fixing pin 12 corresponds to the slider 19. By using the slider 19, the slider 19 is aligned with the sliding groove 18, and the semicircular piece 10 is pushed to move the slider 19, so that the slider 19 slides into the sliding groove 18. Then, the fixing pin 12 is used to fix the slider 19 and the semicircular piece 10. The two semicircular pieces 10 are symmetrically spliced ​​to form the anti-loosening gasket 4.

[0024] Reference Figure 4 The limiting mechanism 8 in this embodiment includes a plurality of forward-curved inclined blocks 20 disposed at the bottom of the first ring 6 and a plurality of reverse-curved inclined blocks 21 disposed at the top of the second ring 7, with the plurality of forward-curved inclined blocks 20 corresponding to the plurality of reverse-curved inclined blocks 21 respectively. When the rotating cylinder 1 rotates clockwise to drive the first ring 6, one side of the forward-curved inclined block 20 pushes one side of the reverse-curved inclined block 21, causing the reverse-curved inclined block 21 to drive the second ring 7 to rotate for installation and tightening. When the rotating cylinder 1 rotates counterclockwise to drive the first ring 6, the inclined surface of the forward-curved inclined block 20 presses against the inclined surface of the reverse-curved inclined block 21, causing the reverse-curved inclined block 21 to push the second ring 7 to compress the spring 5.

[0025] Working principle: In use, first assemble the spring bolt, placing the locking sleeve 3 inside the tightening sleeve 1, with the spring 5 positioned between the tightening sleeve 1 and the locking sleeve 3. At this point, the first ring 6 corresponds to the second ring 7. Then, pass the screw body 2 through the top of the tightening sleeve 1, allowing one end of the screw body 2 to protrude from the bottom of the locking sleeve 3, thus securing the screw body 2 within the tightening sleeve 1. When not in use, screw on the protective cap 9 to one end of the screw body 2, securing the spring bolt assembly and protecting one end of the screw body 2. When in use, remove the protective cap 9, align the screw body 2 with the mounting hole, and rotate the tightening sleeve 1. This causes the screw body 2 to rotate and enter the mounting hole. Simultaneously, the screw body 2... 1 will drive the first ring 6, which in turn drives the second ring 7 through the limiting mechanism 8. The second ring 7 drives the anti-loosening cylinder 3 to rotate through the spring 5, so that part of the semi-circular piece 10 at the bottom of the anti-loosening cylinder 3 enters the mounting hole for anti-loosening positioning. After installation, turning one end of the cylinder 1 will squeeze and limit the fixing pin 12, so that the fixing pin 12 fixes the semi-circular piece 10. When it is necessary to disassemble and replace the semi-circular piece 10, turn the cylinder 1 in the opposite direction. At this time, the limiting mechanism 8 between the first ring 6 and the second ring 7 will not have a limiting effect. After turning out part of the screw body 2, the anti-loosening cylinder 3 can be moved, the fixing pin 12 and the semi-circular piece 10 can be removed, and after replacing them with two new semi-circular pieces 10, they can be tightened.

[0026] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A spring screw with a buffer structure, comprising a screwing cylinder (1), characterized in that, The screw body (2) is engaged with the screw cylinder (1), and the anti-loosening cylinder (3) is slidably engaged with the screw cylinder (1). The screw body (2) passes through the anti-loosening cylinder (3). An anti-loosening washer (4) is provided at the bottom of the anti-loosening cylinder (3). A spring (5) is provided inside the anti-loosening cylinder (3). The top of the inner wall of the screwing cylinder (1) is equipped with a first ring (6), the top of the spring (5) is provided with a second ring (7), a limiting mechanism (8) is provided between the first ring (6) and the second ring (7), a protective cap (9) is provided at one end of the screw body (2) that passes through the anti-loosening cylinder (3), the anti-loosening washer (4) includes two symmetrically distributed semicircular pieces (10), the semicircular pieces (10) slide in fit at the bottom of the anti-loosening cylinder (3), the bottom of the semicircular pieces (10) is conical and provided with multiple anti-loosening strips (11), and two fixing pins (12) corresponding to the two semicircular pieces (10) are provided on the anti-loosening cylinder (3).

2. The spring screw with a buffer structure according to claim 1, characterized in that, One end of the screw body (2) is provided with a tapered head (13), and the protective cap (9) is provided with an internal thread. One end of the screw body (2) is threadedly engaged with the internal thread.

3. The spring screw with a buffer structure according to claim 1, characterized in that, The screw cylinder (1) has anti-slip texture (14) on its periphery, a hexagonal groove (15) on its top, and a cross groove (16) on its top.

4. The spring screw with a buffer structure according to claim 3, characterized in that, The top of the screw body (2) is provided with a hexagonal block (17), which engages with the hexagonal slot (15), and the screw body (2) passes through the hexagonal slot (15).

5. The spring screw with a buffer structure according to claim 1, wherein, The bottom of the anti-loosening cylinder (3) has two sliding grooves (18), and the top of the two semi-circular pieces (10) is provided with sliders (19). The sliding grooves (18) and the sliders (19) are both T-shaped. The sliding grooves (18) and the sliders (19) slide together. The fixing pin (12) corresponds to the sliders (19).

6. The spring screw with a buffer structure according to claim 1, wherein, The limiting mechanism (8) includes a plurality of forward arc-shaped inclined blocks (20) disposed at the bottom of the first ring (6) and a plurality of reverse arc-shaped inclined blocks (21) disposed at the top of the second ring (7), wherein the plurality of forward arc-shaped inclined blocks (20) correspond to the plurality of reverse arc-shaped inclined blocks (21).

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