Low-friction iron plate tail binding screw fastener

Abstract

The utility model relates to the technical field of fasteners, and discloses a low-friction iron plate tail binding screw fastener which comprises a screw rod, a nut is fixedly connected to the top end of the screw rod, an empty groove is formed in the screw rod, a first elastic plate is fixedly connected to the bottom end of the screw rod, and a second elastic plate is fixedly connected to the bottom end of the screw rod. A first conical plate is fixedly connected to the bottom of the first elastic plate, a second conical plate is fixedly connected to the bottom of the second elastic plate, a spring is arranged between the first conical plate and the second conical plate, the two ends of the spring are fixedly connected into the first conical plate and the second conical plate respectively, and a fastening assembly is arranged on the outer wall of the screw rod. According to the utility model, through the elastic structure formed by the elastic plate, the conical plate and the spring at the bottom end of the screw rod, the elastic structure deforms and compresses the spring during installation, so that the screw rod can easily pass through the hole site of the iron plate, and after passing through the iron plate, the elastic structure and the spring are reset and clamped outside the iron plate to complete positioning, so that the effects of quickly positioning the screw rod and reducing the plate penetrating difficulty are realized.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to low-friction iron plate tail screw fasteners. Background Technology

[0002] In numerous industries such as machinery manufacturing, construction, and automobile manufacturing, screws and fasteners are key components for connecting and fixing iron plates. Their performance directly affects the stability and reliability of the overall structure. With the acceleration of industrial automation and the increasing demand for lightweight and efficient products, the limitations of traditional screws and fasteners in terms of ease of installation, positioning accuracy, and anti-loosening performance are becoming increasingly prominent. Especially in the fastening of iron plates, how to improve the efficiency of screws passing through holes in the iron plate and ensure that they do not loosen under complex working conditions after fastening has become an urgent technical problem to be solved. Developing a low-friction, easy-to-position iron plate fastener with high anti-loosening performance is of great significance for improving production efficiency and ensuring project quality.

[0003] Existing iron plate screw fasteners mainly adopt the structure of ordinary screw and nut. During the installation process, the operator needs to manually pass the screw through the hole in the iron plate. After the screw passes through the hole, it is tightened by the thread engagement of the nut and the screw. This tightening method mainly relies on the friction between the threads to prevent loosening. Its anti-loosening effect depends on the precision of the thread and the tightening torque.

[0004] However, existing iron plate screw fasteners suffer from problems such as difficulty in passing the screw through the hole in the iron plate during installation, inaccurate positioning, and easy loosening due to vibration after tightening. Due to the high coefficient of friction between ordinary screws and the wall of the iron plate hole, operators not only need to spend a lot of time and effort adjusting the position of the screw and the hole during installation, but are also prone to screw deformation or damage to the wall of the iron plate hole due to improper force, and the hole alignment may also be inaccurate, making it difficult for the screw fastener to pass through the iron plate, resulting in low installation efficiency. Especially in mass production operations, the low installation efficiency seriously restricts the production progress. Therefore, a low-friction iron plate tail screw fastener is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a low-friction iron plate tail screw fastener, which aims to improve the problem that in the prior art, screw fasteners are difficult to pass through iron plates, requiring a lot of time and effort to adjust the position of the screw and the hole, resulting in low installation efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Low friction iron plate bundle tail screw fastener, including screw rod, the screw rod top end fixedly connected with the nut, the screw rod inside is provided with the air slot, the screw rod bottom is fixedly connected with elastic plate one, the screw rod bottom is fixedly connected with elastic plate two, the elastic plate one bottom is fixedly connected with the conical plate one, the elastic plate two bottom is fixedly connected with the conical plate two, be provided with spring between the conical plate one and conical plate two, the spring both ends are fixedly connected in the conical plate one and conical plate two, the screw rod outer wall is provided with fastening assembly.

[0008] As the further description of the above technical scheme:

[0009] The fastening assembly includes a nut, and the nut is threadedly connected to the outer wall of the screw rod.

[0010] As the further description of the above technical scheme:

[0011] The outer wall of the nut is fixedly connected with two knobs, and the two knobs are symmetrically and uniformly distributed on the outer wall of the nut.

[0012] As the further description of the above technical scheme:

[0013] The nut is internally provided with front and rear symmetric screw holes one, and the nut is internally provided with front and rear symmetric pins one.

[0014] As the further description of the above technical scheme:

[0015] One end of each of the two pins one is fixedly connected with a rotating rod one, and the two pins one are threadedly connected to the inside of the two screw holes one, respectively.

[0016] As the further description of the above technical scheme:

[0017] The inside of the elastic plate one and the elastic plate two is provided with a screw hole two, and the inside of the elastic plate one and the elastic plate two is provided with a pin two.

[0018] As the further description of the above technical scheme:

[0019] One end of each of the two pins two is fixedly connected with a rotating rod two, and the two pins two are threadedly connected to the inside of the two screw holes two, respectively.

[0020] The utility model has the advantages of the following beneficial effects:

[0021] 1. The utility model discloses a screw rod bottom elastic plate, conical plate and spring constitute the elastic structure, when installing, the elastic structure deforms and compresses the spring, makes the screw rod can easily pass through the iron plate hole position, passes through the iron plate and the elastic structure and spring reset and are finished positioning in the iron plate outside, realizes the effect of quick positioning screw rod, reduces the difficulty of passing through the board, solves the problem that the screw fastener is difficult to pass through the iron plate, needs to spend a large amount of time and effort to adjust the position of screw rod and hole position, leads to the problem of low installation efficiency, thereby improve the use convenience of screw fastener.

[0022] 2. The utility model discloses a screw nut is rotated on the screw rod outer wall thread rotation and is completed preliminary fixation after, rotates the shift lever and drives the pin to move in the screw hole thread, makes the pin extend into the screw nut inside and is clamped in the screw thread groove of screw rod, simultaneously rotates another shift lever and drives the pin to move, will shift lever be fixed at the outside of elastic plate and carry out the limiting, realized the double locking of screw nut and screw rod connection to the stable limiting of elastic positioning structure, solved the problem that traditional screw fastener is easy to loosen and fall off under the action of vibration, external force, leads to the connection failure, thereby improved the stability of screw fastener. DRAWINGS

[0023] Figure 1 It is the three-dimensional schematic view of low friction iron plate bundle tail screw fastener that the utility model proposes;

[0024] Figure 2 It is the screw rod outer wall structure schematic view of low friction iron plate bundle tail screw fastener that the utility model proposes;

[0025] Figure 3 It is Figure 2 It is the enlarged schematic view of A place in the middle;

[0026] Figure 4 It is the nut structure schematic view of low friction iron plate bundle tail screw fastener that the utility model proposes;

[0027] Figure 5 It is the pin two structure schematic view of low friction iron plate bundle tail screw fastener that the utility model proposes.

[0028] Legend:

[0029] 1, screw rod;2, screw cap;3, empty slot;4, elastic plate one;5, elastic plate two;6, conical plate one;7, conical plate two;8, spring;9, screw nut;10, knob;11, screw hole one;12, pin one;13, shift lever one;14, screw hole two;15, pin two;16, shift lever two. DETAILED DESCRIPTION

[0030] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] With reference to Figures 1-3 The utility model provides an embodiment: low friction iron plate bundle tail screw fastener, including screw rod 1, screw rod 1 top fixedly connected with screw cap 2, be equipped with the empty slot 3 in screw rod 1 inside, can provide space when the structure needs adjustment or reduce friction, screw rod 1 bottom fixedly connected with elastic plate no. 4, screw rod 1 bottom fixedly connected with elastic plate no. 5, elastic plate no. 4 bottom fixedly connected with conical plate no. 6, elastic plate no. 5 bottom fixedly connected with conical plate no. 7, effectively increase the contact area of fastener, and through the change contact angle disperses the pressure on fastener, has played the role similar to "tapered bolt", after screw rod 1 passes through iron plate, through the elasticity of itself and the cooperation with spring 8, quickly restore to the original position, thereby realize the positioning effect, conical plate no. 6 and conical plate no. 7 between be equipped with spring 8, spring 8 both ends are fixedly connected in conical plate no. 6 and conical plate no. 7 inside, the compression of spring 8 will provide additional restoring force, make the connection more stable, screw rod 1 outer wall is provided with fastening assembly.

[0032] With reference to Figure 1 , Figure 4 and Figure 5, the fastening assembly comprises a nut 9 which is threadedly connected to the outer wall of the screw rod 1, and two knobs 10 which are fixedly connected to the outer wall of the nut 9 and are uniformly distributed on the outer wall of the nut 9 in a left-right symmetrical manner, so that the operation efficiency can be effectively improved. When the nut 9 is rotated to a suitable position, it can fasten the iron plate and other components, thereby completing the preliminary fixing work. The interior of the nut 9 is provided with front-rear symmetrical screw holes 11, and the interior of the nut 9 is provided with front-rear symmetrical pins 12, one end of each of the two pins 12 is fixedly connected with a rotating rod 13, and the two pins 12 are threadedly connected in the two screw holes 11 respectively. The rotating rod 13 rotates to drive the pins 12 to move along the thread track of the screw holes 11, and finally the pins 12 extend into the interior of the nut 9 and are clamped in the thread grooves of the screw rod 1, thereby enhancing the stability of the connection. The interiors of the elastic plates 4 and 5 are provided with screw holes 14 and pins 15 respectively, one end of each of the two pins 15 is fixedly connected with a rotating rod 16, and the two pins 15 are threadedly connected in the two screw holes 14 respectively. The rotating rod 16 drives the pins 15 to move along the thread track of the screw holes 14, and the rotating rod 16 is fixed outside the elastic plates 4 and 5 to limit the position, so that the fastener cannot be accidentally detached when it is loose.

[0033] Working principle: when the low-friction iron plate bundle tail screw fastener is used, the nut 2 is fixed at the top end of the screw rod 1, which facilitates the operation of the screw rod 1 by using tools. The elastic plates 4 and 5 at the bottom end of the screw rod 1, together with the conical plates 6 and 7 and the spring 8 connected thereto, constitute an elastic structure, which is helpful for positioning the screw rod 1 during installation, so that it is easier to pass through the hole position on the iron plate. During the fastening process, the screw rod 1 is passed through the iron plate and other components that need to be fastened, and then the screw rod 1 is rotated. At this time, the elastic plates 4 and 5 can be elastically deformed, and the spring 8 can also be compressed accordingly. When the conical plates 6 and 7 pass through the iron plate and other components, they are reset through their own elasticity and the elasticity of the spring 8, thereby being clamped outside the iron plate and other components to complete positioning and reduce the risk of loosening due to vibration and other factors.

[0034] After positioning, the nut 9 is rotated, and the nut 9 is threadedly rotated on the outer wall of the screw rod 1 to gradually approach the iron plate. The knobs 10 on the outer wall of the nut 9 facilitate manual rotation of the nut 9 to achieve further fixation. Subsequently, the rotating rod 13 can be rotated to drive the pins 12 to move threadedly in the screw holes 11, so that the pins 12 extend into the interior of the nut 9 and are clamped in the thread grooves of the screw rod 1, thereby enhancing the stability of the connection. At the same time, the rotating rod 16 is rotated to drive the pins 15 to move threadedly in the screw holes 14, and then the rotating rod 16 is fixed outside the elastic plates 4 and 5 to limit the position, thereby achieving the effect of effectively preventing the fastener from being detached.

[0035] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. Low friction iron panel bundle tail screw fastener, comprising a screw rod (1), characterized in that: The screw rod (1) top fixedly connected with the nut (2), the screw rod (1) inside is provided with the empty slot (3), the screw rod (1) bottom fixedly connected with the elastic plate one (4), the screw rod (1) bottom fixedly connected with the elastic plate two (5), the elastic plate one (4) bottom fixedly connected with the conical plate one (6), the elastic plate two (5) bottom fixedly connected with the conical plate two (7), the conical plate one (6) and conical plate two (7) between being provided with spring (8), the spring (8) both ends are fixedly connected in the conical plate one (6) and conical plate two (7) inside, the screw rod (1) outer wall is provided with fastening assembly.

2. The low-friction iron panel bundle screw fastener according to claim 1, characterized in that: The fastening assembly includes nut (9), the nut (9) is screwed in the outer wall of screw rod (1).

3. The low-friction sheet metal fastener of claim 2, wherein: The outer wall of the nut (9) is fixedly connected with two knobs (10), two the knob (10) is left-right symmetrical and evenly distributed in the outer wall of the nut (9).

4. The low-friction sheet metal fastener of claim 3, wherein: The inner wall of the nut (9) is provided with front and back symmetrical screw hole one (11), the inner wall of the nut (9) is provided with front and back symmetrical pin one (12).

5. The low-friction sheet metal fastener of claim 4, wherein: Two the pin one (12) one end is fixedly connected with the rotating rod one (13), two the pin one (12) is screwed in two the screw hole one (11) inside respectively.

6. The low-friction iron panel bundle screw fastener of claim 1, wherein: The inner wall of the elastic plate one (4) and the elastic plate two (5) is provided with screw hole two (14), the inner wall of the elastic plate one (4) and the elastic plate two (5) is provided with pin two (15).

7. The low-friction sheet metal fastener of claim 6, wherein: Two the pin two (15) one end is fixedly connected with the rotating rod two (16), two the pin two (15) is screwed in two the screw hole two (14) inside respectively.

Images