Anti-falling fastener

Abstract

The utility model discloses an anti-falling fastener, which belongs to the technical field of fasteners and comprises a bolt, a nut screwed on the bolt, a clamping groove arranged on the side surface of the bolt, a lower limiting shell and an upper limiting shell, the lower limiting shell and the upper limiting shell are movably mounted on the side surface of the bolt, and the inner walls of the lower limiting shell and the upper limiting shell are fixedly connected with clamping blocks. An inserting block is fixedly connected to the top end of the lower limiting shell, an inserting groove is formed in the bottom end of the upper limiting shell, the top end of the lower limiting shell is attached to the bottom end of the upper limiting shell, the inserting block is inserted into the inserting groove, the inner wall of the lower limiting shell and the inner wall of the upper limiting shell are attached to the side surface of the bolt, and the clamping block is clamped into the clamping groove; through cooperative use of the devices, the lower limiting shell and the upper limiting shell can be spliced together and can be stably clamped to a bolt through the clamping blocks, so that a nut is propped against and limited, and the situation that the nut is loosened is reduced.

Description

Technical Field

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

[0002] Fasteners are a type of mechanical parts used for fastening connections and are extremely widely used. Fasteners are used in a wide range of industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, molds, hydraulics and other industries. Various fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, meters and supplies. They are the most widely used mechanical basic parts.

[0003] In the prior art, there are many types of fasteners, but the most common ones in life are bolts and nuts. After long-term use, the nuts of bolts and nuts may become loose. Once the nuts become loose, the objects originally fixed are likely to become loose as well, causing some dangerous situations.

[0004] Therefore, the present invention provides an anti-falling fastener to solve the above problems. Utility Model Content

[0005] (1) Technical problems solved

[0006] The utility model provides an anti-falling fastener, aiming to solve the problems raised in the background technology.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-falling fastener, which includes a bolt, a nut threaded on the bolt, a slot provided on the side surface of the bolt, and a lower limit shell and an upper limit shell movably installed on the side surface of the bolt, the inner walls of the lower limit shell and the upper limit shell are fixedly connected with a block, the top of the lower limit shell is fixedly connected with an insert block, the bottom end of the upper limit shell is provided with a slot, the top end of the lower limit shell is fitted with the bottom end of the upper limit shell, the insert block is inserted into the inside of the slot, the inner walls of the lower limit shell and the upper limit shell are fitted with the side surface of the bolt, and the block is clamped into the inside of the slot.

[0009] As a preferred technical solution of the present application, a first mounting groove is provided inside the upper limit shell, the first mounting groove is connected to the slot, a fixed block is slidably connected inside the first mounting groove, a socket adapted to the fixed block is provided on the plug block, a first spring is fixedly connected to one side of the fixed block, and an end of the first spring away from the fixed block is fixedly connected to an inner wall of one side of the first mounting groove.

[0010] As a preferred technical solution of the present application, a second mounting groove is provided on the upper limit shell, and a slider is slidably connected inside the second mounting groove. A first slide groove is provided inside the upper limit shell, and the first slide groove is connected to the second mounting groove, and the first slide groove is connected to the first mounting groove. A connecting block and a push block are slidably connected inside the first slide groove, and the bottom of the connecting block is fixedly connected to the top of the fixed block, and the push block is fixedly connected to the bottom of the slider, and one side of the push block is movably attached to one side of the connecting block.

[0011] As a preferred technical solution of the present application, a second slide groove is provided inside the upper limit shell, the second slide groove is connected to the second mounting groove, a pressure block is slidably connected inside the second slide groove, the top of the pressure block is fixedly connected to the bottom of the slider, a second spring is fixedly connected to one side of the slider, and the end of the second spring away from the slider is fixedly connected to the inner wall of one side of the second slide groove.

[0012] As a preferred technical solution of the present application, a sliding rod is provided inside the second mounting groove, the sliding rod passes through the slider, and both ends of the sliding rod are fixedly connected to the inner walls on both sides of the second mounting groove.

[0013] As a preferred technical solution of the present application, a gasket is provided on the side surface of the bolt, one side of the gasket fits with one side of the nut, and the other side of the gasket fits with one side of the lower limit shell and the upper limit shell respectively.

[0014] (3) Beneficial effects

[0015] The utility model has a simple structure and is easy to use. Through the arrangement of the lower limit shell, the upper limit shell, the clamping block and the inserting block, the lower limit shell and the upper limit shell can be spliced ​​together, and the clamping block can be stably clamped on the bolt, thereby supporting the nut and limiting the nut, thereby reducing the occurrence of nut loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of an anti-falling fastener;

[0017] Figure 2 This is a schematic diagram of the installation of the lower limit shell in the anti-fall-off fastener;

[0018] Figure 3 Cross-section of the upper limit shell in the anti-fall fastener Figure 1 ;

[0019] Figure 4 Cross-section of the upper limit shell in the anti-fall fastener Figure 2 ;

[0020] Figure 5 for Figure 2 A in the enlarged view.

[0021] In the picture:

[0022] 1. Bolt; 2. Nut; 3. Gasket; 4. Lower limit shell; 5. Upper limit shell; 6. Block; 7. Slot; 8. Insert block; 9. Slot; 10. First mounting slot; 11. Fixed block; 12. First spring; 13. Connecting block; 14. First slide slot; 15. Push block; 16. Second mounting slot; 17. Slide rod; 18. Slider; 19. Press block; 20. Second spring; 21. Second slide slot. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The utility model provides an anti-falling fastener, such as Figure 1 、 Figure 2 and Figure 3 As shown, the fastener includes a bolt 1, a nut 2 screwed on the bolt 1, a slot 7 opened on the side surface of the bolt 1, and a lower limit shell 4 and an upper limit shell 5 movably installed on the side surface of the bolt 1, the inner walls of the lower limit shell 4 and the upper limit shell 5 are fixedly connected with a block 6, the top of the lower limit shell 4 is fixedly connected with an insert block 8, the bottom end of the upper limit shell 5 is provided with a slot 9, the top of the lower limit shell 4 is fitted with the bottom end of the upper limit shell 5, the insert block 8 is inserted into the inside of the slot 9, the inner walls of the lower limit shell 4 and the upper limit shell 5 are fitted with the side surface of the bolt 1, and the block 6 is clamped into the inside of the slot 7.

[0025] When using this fastener, you first need to let the bolt 1 pass through the fixing hole. After tightening with the nut 2, you need to take the lower limit shell 4 and the upper limit shell 5 and install them on the bolt 1. The inner walls of the lower limit shell 4 and the upper limit shell 5 are fixed with a clamping block 6. During installation, you need to align the clamping block 6 with the clamping slot 7, and then you can buckle the lower limit shell 4 and the upper limit shell 5 on the bolt 1. At this time, the insert block 8 on the lower limit shell 4 will also be inserted into the slot 9 on the upper limit shell 5, so that the lower limit shell 4 and the upper limit shell 5 are put together to form a complete cylinder. This cylinder can be stably clamped on the bolt 1 through the clamping block 6, thereby resisting the nut 2, limiting the nut 2, and reducing the occurrence of loosening of the nut 2.

[0026] Furthermore, in order to improve the stability when the lower limit shell 4 and the upper limit shell 5 are spliced ​​together, as shown in FIG. Figure 1 、 Figure 2 and Figure 3As shown, a first mounting groove 10 is provided inside the upper limit shell 5, and the first mounting groove 10 is connected to the slot 9. A fixed block 11 is slidably connected inside the first mounting groove 10, and a socket adapted to the fixed block 11 is provided on the plug block 8. A first spring 12 is fixedly connected to one side of the fixed block 11, and the end of the first spring 12 away from the fixed block 11 is fixedly connected to the inner wall of one side of the first mounting groove 10.

[0027] When the lower limit shell 4 and the upper limit shell 5 are spliced ​​together, the plug block 8 on the lower limit shell 4 will be inserted into the slot 9 on the upper limit shell 5. During this process, the top of the plug block 8 will contact the arc surface of the fixed block 11 and squeeze the fixed block 11, so that the fixed block 11 shrinks in the first mounting groove 10 and compresses the first spring 12. When the plug block 8 is fully inserted into the slot 9, the socket on the plug block 8 is also aligned with the first mounting groove 10. At this time, the fixed block 11 and the first spring 12 also lose the squeezing force. The first spring 12 can instantly release the pressure to push the fixed block 11 to move, so that the fixed block 11 can be inserted into the socket on the plug block 8, so that the lower limit shell 4 and the upper limit shell 5 can be stably spliced ​​together.

[0028] Furthermore, in order to enable the lower limit shell 4 and the upper limit shell 5 to be removed from the bolt 1, as shown in FIG. Figure 1 、 Figure 2 and Figure 3 As shown, a second mounting groove 16 is provided on the upper limit shell 5, and a slider 18 is slidably connected inside the second mounting groove 16. A first slide groove 14 is provided inside the upper limit shell 5, and the first slide groove 14 is connected to the second mounting groove 16. The first slide groove 14 is connected to the first mounting groove 10, and a connecting block 13 and a push block 15 are slidably connected inside the first slide groove 14. The bottom of the connecting block 13 is fixedly connected to the top of the fixed block 11, and the push block 15 is fixedly connected to the bottom of the slider 18, and one side of the push block 15 is movably attached to one side of the connecting block 13.

[0029] When the slider 18 is slid, the slider 18 can drive the push block 15 to move inside the first slide groove 14, and the push block 15 contacts the connecting block 13. When the push block 15 moves, it can push the connecting block 13 to move. The connecting block 13 is fixed together with the fixed block 11. Therefore, the sliding slider 18 can indirectly move the fixed block 11 out of the socket on the plug block 8, thereby releasing the stable splicing state of the lower limit shell 4 and the upper limit shell 5. At this time, the lower limit shell 4 and the upper limit shell 5 can be directly removed from the bolt 1.

[0030] In order to improve the stability of the slider 18 when it moves, Figure 2 、 Figure 4 Figure 5As shown, a second slide groove 21 is opened inside the upper limit shell 5, and the second slide groove 21 is connected to the second mounting groove 16. A pressure block 19 is slidably connected inside the second slide groove 21. The top of the pressure block 19 is fixedly connected to the bottom of the slider 18. A second spring 20 is fixedly connected to one side of the slider 18. The end of the second spring 20 away from the slider 18 is fixedly connected to the inner wall of one side of the second slide groove 21.

[0031] A slide bar 17 is provided inside the second installation groove 16 . The slide bar 17 passes through the slider 18 . Both ends of the slide bar 17 are fixedly connected to the inner walls of the second installation groove 16 .

[0032] When removing the lower limit shell 4 and the upper limit shell 5 from the bolt 1, it is necessary to slide the slider 18 in the second mounting groove 16. When the slider 18 slides, it can drive the pressure block 19 to slide inside the second slide groove 21 and compress the second spring 20. When the staff releases the slider 18, the second spring 20 can release the pressure and drive the slider 18 to reset through the pressure block 19, reducing the possibility of the slider 18 interfering with the splicing of the lower limit shell 4 and the upper limit shell 5. In addition, the setting of the slide rod 17 provides a good limiting effect for the slider 18. The slider 18 can slide on the slide rod 17, which improves the stability of the slider 18 when moving.

[0033] Furthermore, in order to improve the service life of the lower limit shell 4 and the upper limit shell 5, as Figure 1 and Figure 2 As shown, a gasket 3 is sleeved on the side surface of the bolt 1, one side of the gasket 3 fits with one side of the nut 2, and the other side of the gasket 3 fits with one side of the lower limit shell 4 and the upper limit shell 5 respectively.

[0034] Since the distance between the nut 2 and the slot 7 is not fixed after the fastener is screwed onto the bolt 1 during actual use, there may be a certain gap between the nut 2 and the lower limit shell 4 and the upper limit shell 5. Therefore, a gasket 3 can be used to fill this gap. On the one hand, the setting of the gasket 3 can enable the lower limit shell 4 and the upper limit shell 5 to press against the nut 2 to limit the nut 2. On the other hand, it can play a buffering role between the nut 2 and the lower limit shell 4 and the upper limit shell 5 to reduce the possibility of damage caused by direct hard contact, thereby improving the service life of the lower limit shell 4 and the upper limit shell 5.

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Anti-falling fastener, characterized by: The fastener comprises a bolt (1), a nut (2) screwed on the bolt (1), a slot (7) provided on the side surface of the bolt (1), and a lower limit shell (4) and an upper limit shell (5) movably installed on the side surface of the bolt (1); the inner walls of the lower limit shell (4) and the upper limit shell (5) are fixedly connected with a block (6); the top end of the lower limit shell (4) is fixedly connected with an insert block (8); the bottom end of the upper limit shell (5) is provided with a slot (9); the top end of the lower limit shell (4) is fitted with the bottom end of the upper limit shell (5); the insert block (8) is inserted into the inside of the slot (9); the inner walls of the lower limit shell (4) and the upper limit shell (5) are fitted with the side surface of the bolt (1), and the block (6) is clamped into the inside of the slot (7).

2. The anti-fall-off fastener according to claim 1, characterized in that: A first mounting groove (10) is provided inside the upper limit shell (5), the first mounting groove (10) is connected to the slot (9), a fixed block (11) is slidably connected inside the first mounting groove (10), a socket adapted to the fixed block (11) is provided on the plug block (8), a first spring (12) is fixedly connected to one side of the fixed block (11), and an end of the first spring (12) away from the fixed block (11) is fixedly connected to an inner wall of one side of the first mounting groove (10).

3. The anti-fall-off fastener according to claim 2, characterized in that: The upper limit housing (5) is provided with a second mounting groove (16), the interior of the second mounting groove (16) is slidably connected to a slider (18), the interior of the upper limit housing (5) is provided with a first slide groove (14), the first slide groove (14) is communicated with the second mounting groove (16), the first slide groove (14) is communicated with the first mounting groove (10), the interior of the first slide groove (14) is slidably connected to a connecting block (13) and a push block (15), the bottom of the connecting block (13) is fixedly connected to the top of the fixed block (11), the push block (15) is fixedly connected to the bottom of the slider (18), and one side of the push block (15) is movably attached to one side of the connecting block (13).

4. The anti-fall-off fastener according to claim 3, characterized in that: A second slide groove (21) is provided inside the upper limit shell (5), and the second slide groove (21) is connected to the second mounting groove (16). A pressure block (19) is slidably connected inside the second slide groove (21), and the top of the pressure block (19) is fixedly connected to the bottom of the slider (18). A second spring (20) is fixedly connected to one side of the slider (18), and the end of the second spring (20) away from the slider (18) is fixedly connected to the inner wall of one side of the second slide groove (21).

5. The anti-fall-off fastener according to claim 3, characterized in that: A slide bar (17) is provided inside the second installation groove (16), the slide bar (17) passes through the slider (18), and both ends of the slide bar (17) are fixedly connected to the inner walls on both sides of the second installation groove (16).

6. The anti-falling fastener according to claim 1, characterized in that: A gasket (3) is sleeved on the side surface of the bolt (1), one side of the gasket (3) is fitted with one side of the nut (2), and the other side of the gasket (3) is fitted with one side of the lower limit shell (4) and the upper limit shell (5).

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