Fastener structure with anti-loosening function

Abstract

The invention discloses a fastener structure with an anti-loosening function, and relates to the technical field of fastener structures. The fastener structure with the anti-loosening function comprises a fastening plate, two sets of fastening frames are fixedly installed on the fastening plate and distributed left and right, screw rods are installed in the fastening frames in a threaded mode, screw rod heads are fixedly installed at one ends of the screw rods, and first nuts are installed on the screw rods in a threaded mode; a second nut is installed on the screw rod in a threaded mode, a fastening mechanism is arranged on the fastening frame, the fastening mechanism comprises a first fastening box fixedly installed at the bottom of the fastening frame, a fastening block is moved into a fastening groove, and a first spring and a second spring are arranged to drive the fastening block to reset so as to apply pressure to the first nut; and therefore, the device can better prevent the first nut from rotating, so that the device is prevented from loosening, and the anti-loosening effect of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fastener structures, and particularly relates to a fastener structure with a loosening prevention function. Background Art

[0002] Fasteners are a type of mechanical parts used for fastening connections and are extremely widely applied. On various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, meters, and supplies, etc., various fasteners can be seen. Its characteristics are that there are a large number of variety specifications, different performance uses, and a very high degree of standardization, serialization, and generalization. The commonly used fastener structure at present is usually a structure using a nut and a bolt. The object to be fastened is fastened by installing the bolt on the object to be fastened and then installing the nut on the bolt. However, when the above structure is used, the nut may rotate under external interference, which may cause the fastener structure to become loose. Therefore, it is necessary to perform a loosening prevention treatment on it.

[0003] The commonly used fastener loosening prevention structures at present often set a spring pressing piece or a second bolt on the bolt to increase the friction force of the bolt, thereby preventing it from loosening. However, the above device may still become loose in extreme cases by increasing the friction force of the device, and it cannot well prevent the fastener from becoming loose.

[0004] Therefore, a fastener structure with a loosening prevention function is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a fastener structure with a loosening prevention function, which can solve the problem that some current devices cannot well prevent the device from becoming loose by increasing the friction force.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A fastener structure with a loosening prevention function includes a fastening plate. Two fastening frames are fixedly installed on the fastening plate and are distributed left and right. A screw rod is threadedly installed inside the fastening frame. One end of the screw rod is fixedly installed with a screw rod head. A first nut is threadedly installed on the screw rod. A second nut is threadedly installed on the screw rod. A fastening mechanism is provided on the fastening frame. The fastening mechanism includes a first fastening box fixedly installed at the bottom of the fastening frame.

[0007] Preferably, the fastening mechanism further includes a first spring, a second fastening box, a second spring, a connecting plate and a fastening block. Two first fastening boxes are fixedly installed at the bottom of the fastening frame and are distributed left and right. A chute is opened at the inner top of the first fastening box. A slider is slidably installed inside the chute. A second fastening box is fixedly installed at the bottom of the slider. A first spring is fixedly installed inside the first fastening box. One end of the first spring is fixedly connected to the second fastening box. A connecting plate is slidably installed inside the second fastening box. A second spring is fixedly installed inside the second fastening box. One end of the second spring is fixedly connected to the connecting plate. A fastening block is fixedly installed at the bottom of the connecting plate.

[0008] Preferably, a fastening groove is opened at the bottom of the first nut, and the fastening block fits with the fastening groove.

[0009] Preferably, six mounting holes are opened inside the second nut and are distributed in a ring shape. A mounting plate is fixedly installed inside the mounting hole. A connecting rod is slidably installed on the mounting plate. A third spring is sleeved on the connecting rod. One end of the connecting rod is fixedly installed with a fastening rod, and one end of the fastening rod extends to the outside of the second nut.

[0010] Preferably, one end of the connecting rod passes through the mounting plate and extends to the outside of the second nut and is fixedly installed with a connecting ring. Two pulling rings are fixedly installed at the bottom of the connecting ring and are distributed left and right.

[0011] Preferably, six fastening holes are opened at the bottom of the first nut and are distributed in a ring shape, and the sizes of the fastening holes match the fastening rods.

[0012] Preferably, a spring pressing piece is threadedly installed on the screw rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are: (1). In the fastening member structure with an anti-loosening function, through the combined use of the first fastening box, the first spring, the second fastening box, the second spring, the connecting plate and the fastening block, the device can move the fastening block into the fastening groove, and through the settings of the first spring and the second spring, drive the fastening block to better limit the first nut, and can better prevent the first nut from rotating so that the device loosens, improving the anti-loosening effect of the device.

[0014] (2). In the fastening member structure with an anti-loosening function, through the settings of the fastening rod, the connecting ring, the pulling ring, the mounting hole, the third spring, the mounting plate and the connecting rod, the device can move the fastening rod into the fastening hole so that the fastening rod can limit the first nut to a certain extent, thereby preventing the first nut from rotating and causing the device to loosen. At the same time, through the setting of the second nut, the friction force of the first nut can be increased, and thus the device can be better prevented from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 is the front view of the present invention; Figure 2 is the sectional view of the present invention; Figure 3 is the structural diagram of the first nut of the present invention; Figure 4 is the structural diagram of the second nut of the present invention; Figure 5 is the enlarged view of part A of the present invention; Figure 6 is the enlarged view of part B of the present invention.

[0016] Reference numerals: 1, fastening plate; 2, screw rod; 3, screw head; 4, fastening frame; 5, first nut; 6, second nut; 7, fastening mechanism; 701, first fastening box; 702, first spring; 703, second fastening box; 704, second spring; 705, connecting plate; 706, fastening block; 8, fastening rod; 9, connecting ring; 10, pull ring; 11, spring pressing piece; 12, mounting hole; 13, third spring; 14, mounting plate; 15, connecting rod; 16, fastening groove; 17, fastening hole. Specific embodiments

[0017] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0018] Please refer to Figures 1-6 , the present invention provides a technical solution: a fastener structure with a loosening prevention function, including a fastening plate 1, two fastening frames 4 are fixedly installed on the fastening plate 1 and are distributed left and right. A screw rod 2 is threadedly installed inside the fastening frame 4. One end of the screw rod 2 is fixedly installed with a screw head 3. A first nut 5 is threadedly installed on the screw rod 2. A second nut 6 is threadedly installed on the screw rod 2. A fastening mechanism 7 is provided on the fastening frame 4. The fastening mechanism 7 includes a first fastening box 701 fixedly installed at the bottom of the fastening frame 4.

[0019] The fastening mechanism 7 further includes a first spring 702, a second fastening box 703, a second spring 704, a connecting plate 705 and a fastening block 706. Two first fastening boxes 701 are fixedly installed at the bottom of the fastening frame 4 and are distributed left and right. A chute is provided at the inner top of the first fastening box 701. A slider is slidably installed inside the chute. The second fastening box 703 is fixedly installed at the bottom of the slider. The first spring 702 is fixedly installed inside the first fastening box 701. One end of the first spring 702 is fixedly connected to the second fastening box 703. The connecting plate 705 is slidably installed inside the second fastening box 703. The second spring 704 is fixedly installed inside the second fastening box 703. One end of the second spring 704 is fixedly connected to the connecting plate 705. The fastening block 706 is fixedly installed at the bottom of the connecting plate 705. During use, the sliding arrangement of the first fastening box 701 and the second fastening box 703 enables the fastening block 706 to perform a certain lateral movement. Through the sliding arrangement of the second fastening box 703 and the connecting plate 705, the fastening block 706 can perform a certain longitudinal movement, enabling the fastening block 706 to move better, so that it can better limit the first nut 5 of different sizes, thereby better limiting the first nut 5 and further preventing the device from loosening. When the fastening block 706 limits the first nut 5, through the arrangement of the first spring 702 and the second spring 704, the first spring 702 and the second spring 704 can drive the fastening block 706 to reset, so that the fastening block 706 can better press on the first nut 5, and further better prevent the device from loosening.

[0020] A fastening groove 16 is provided at the bottom of the first nut 5. The fastening block 706 is fitted with the fastening groove 16. Through the arrangement of the fastening groove 16, after the fastening block 706 enters the inside of the fastening groove 16, the fastening groove 16 can better limit the first nut 5, preventing the first nut 5 from rotating and further causing the device to loosen.

[0021] Six mounting holes 12 are provided inside the second nut 6 and are distributed in a ring shape. A mounting plate 14 is fixedly installed inside the mounting hole 12. A connecting rod 15 is slidably installed on the mounting plate 14. A third spring 13 is sleeved on the connecting rod 15. One end of the connecting rod 15 is fixedly installed with a fastening rod 8. One end of the fastening rod 8 extends to the outside of the second nut 6. Through the arrangement of the third spring 13, the third spring can drive the fastening rod 8 to pop out, so that when an operator needs to limit the first nut through the second nut 6, the second nut 6 can be installed on the screw rod 2 and the third spring 13 can drive the fastening rod 8 to pop out, thereby enabling better and more convenient limitation of the first nut 5.

[0022] One end of the connecting rod 15 passes through the mounting plate 14 and extends to the outside of the second nut 6, and a connecting ring 9 is fixedly installed. Two groups of pull rings 10 are fixedly installed at the bottom of the connecting ring 9 and are distributed left and right. The setting of the pull rings 10 enables the operator to drive the connecting ring 9 to move by pulling the pull rings 10 when removing the second nut 6, and then drive the fastening rod 8 out of the fastening hole 17, so that the operator can more conveniently remove the second nut.

[0023] Six groups of fastening holes 17 are formed at the bottom of the first nut 5 and are distributed in a circular shape. The size of the fastening holes 17 is consistent with that of the fastening rod 8. The setting of the fastening holes 17 enables the fastening rod 8 to enter the inside of the fastening holes 17 to limit the first nut 5 to a certain extent, thereby preventing it from rotating.

[0024] A spring pressure plate 11 is threadedly installed on the screw rod 2. The setting of the spring pressure plate 11 enables the spring pressure plate 11 to be squeezed to a certain extent when the first nut 5 is installed on the screw rod 2, and then the spring pressure plate 11 will press the first nut 5 in the reverse direction to a certain extent, thereby increasing the friction force between it and the screw rod 2 and preventing it from rotating on the screw rod 2.

[0025] Working principle: When in use, the fastening frame 4 is installed on the fastening plate 1, the screw rod 2 is threadedly installed inside the fastening frame 4, and the fastening plate 1 is fastened by threadedly installing the first nut 5 on the screw rod 2. Since a spring pressing piece 11 is provided on the top of the first nut 5, when the first nut 5 fastens the fastening plate 1, the spring pressing piece 11 can be squeezed to a certain extent, and the first nut 5 is pressed in the reverse direction by the elasticity of the spring pressing piece 11, so as to increase the friction force of the first nut 5 and prevent it from loosening. By threadedly installing the second nut 6 on the screw rod 2, the second nut 6 can further prevent the first nut 5 from loosening. By placing the fastening rod 8 provided on the second nut 6 into the fastening hole 17 opened on the first nut 5, the first nut 5 can be better prevented from loosening. Due to the setting of the third spring 13, the third spring can drive the fastening rod 8 to pop out. When the operator needs to limit the first nut by the second nut 6, the second nut 6 can be installed on the screw rod 2, and the third spring 13 drives the fastening rod 8 to pop out, so that the first nut 5 can be better and more conveniently limited. Due to the setting of the pull ring 10, when the operator needs to remove the second nut 6, the pull ring 10 can be pulled to drive the connecting ring 9 to move, and then drive the fastening rod 8 to disengage from the inside of the fastening hole 17, so that the operator can more conveniently remove the second nut. Due to the sliding setting of the first fastening box 701 and the second fastening box 703, the fastening block 706 can move horizontally to a certain extent. Due to the sliding setting of the second fastening box 703 and the connecting plate 705, the fastening block 706 can move vertically to a certain extent, so that the fastening block 706 can move better and can better limit the first nuts 5 of different sizes, thus better limiting the first nuts 5 and preventing the device from loosening. When the fastening block 706 limits the first nut 5, due to the setting of the first spring 702 and the second spring 704, the first spring 702 and the second spring 704 can drive the fastening block 706 to reset, so that the fastening block 706 can better press the first nut 5 and further prevent the device from loosening. Through the setting of the fastening groove 16, the first nut 5 is better limited to prevent the first nut 5 from rotating and causing the device to loosen.

[0026] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the technical field, various changes can be made without departing from the purpose of the present invention.

Claims

1. A fastener structure with a function of preventing loosening, characterized in that, Comprising: A fastening plate (1), on which two sets of fastening frames (4) are fixedly installed and distributed left and right. A screw rod (2) is threadedly installed inside the fastening frame (4). One end of the screw rod (2) is fixedly installed with a screw head (3). A first nut (5) is threadedly installed on the screw rod (2), and a second nut (6) is threadedly installed on the screw rod (2). A fastening mechanism (7) is arranged on the fastening frame (4), and the fastening mechanism (7) includes a first fastening box (701) fixedly installed at the bottom of the fastening frame (4).

2. The structure of a fastener with a loosening prevention function according to claim 1, wherein: The fastening mechanism (7) further includes a first spring (702), a second fastening box (703), a second spring (704), a connecting plate (705) and a fastening block (706). Two sets of first fastening boxes (701) are fixedly installed at the bottom of the fastening frame (4) and distributed left and right. A chute is opened at the inner top of the first fastening box (701). A slider is slidably installed inside the chute. The bottom of the slider is fixedly installed with a second fastening box (703). A first spring (702) is fixedly installed inside the first fastening box (701). One end of the first spring (702) is fixedly connected to the second fastening box (703). A connecting plate (705) is slidably installed inside the second fastening box (703). A second spring (704) is fixedly installed inside the second fastening box (703). One end of the second spring (704) is fixedly connected to the connecting plate (705). The bottom of the connecting plate (705) is fixedly installed with a fastening block (706).

3. The structure of a fastener with a loosening prevention function according to claim 2, wherein: A fastening groove (16) is opened at the bottom of the first nut (5), and the fastening block (706) is fitted with the fastening groove (16).

4. A fastener structure with a loosening prevention function according to claim 1, characterized in that: Six mounting holes (12) are opened inside the second nut (6) and distributed in a ring shape. A mounting plate (14) is fixedly installed inside the mounting hole (12). A connecting rod (15) is slidably installed on the mounting plate (14). A third spring (13) is sleeved on the connecting rod (15). One end of the connecting rod (15) is fixedly installed with a fastening rod (8), and one end of the fastening rod (8) extends to the outside of the second nut (6).

5. A fastener structure with a loosening prevention function according to claim 4, characterized in that: One end of the connecting rod (15) passes through the mounting plate (14) and extends to the outside of the second nut (6) and is fixedly installed with a connecting ring (9). Two sets of pull rings (10) are fixedly installed at the bottom of the connecting ring (9) and distributed left and right.

6. A fastener structure with a loosening prevention function according to claim 1, characterized in that: Six fastening holes (17) are opened at the bottom of the first nut (5) and distributed in a ring shape, and the size of the fastening hole (17) is consistent with that of the fastening rod (8).

7. A fastening member structure with a loosening prevention function according to claim 1, characterized in that: A spring pressing piece (11) is threadedly installed on the screw rod (2).

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