Anti-loosening bolt structure

Abstract

The utility model relates to the technical field of bolts, and discloses an anti-loosening bolt structure which comprises a bolt and two workpieces, a bolt thread penetrates through the two workpieces, two sections of first threads and a single section of second threads are respectively arranged on the outer wall of the bolt, the second threads are located between the two sections of first threads, and the second threads are located between the two sections of first threads. The outer wall of the upper first thread is sleeved with a nut in a threaded mode, the bottom of the nut is connected with a soft metal gasket in a clamped mode, the outer wall of the soft metal gasket is fixedly sleeved with a gear ring, and the soft metal gasket penetrates through the thread to be connected to the outer wall of the second thread. The bolt is easy to use, the first thread and the second thread with different thread pitches are arranged on the bolt, so that the soft metal gasket and the first internal thread can fill the toothed ring groove and the second thread through the locking force of the bolt and the nut, and then the first thread and the second thread are in a mutual restriction state due to different thread pitches; therefore, the bolt and the nut are prevented from loosening.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field, concretely is a bolt structure of anti -loosening. BACKGROUND

[0002] The existing anti-loosening type bolt passes through the anti -loosening pad of setting up in the nut end head to prevent loosening, and the disadvantage of such is that the bolt and the nut exist loosening and falling risk under the environment of the rotation or the vibration of the workpiece existing simultaneously in the use process, and the anti-loosening effect is not obvious, thereby will cause the unnecessary accident or the connection invalidation problem, therefore, the technical personnel in the art provides a bolt structure of anti -loosening to solve the problem raised in above -mentioned background art. SUMMARY

[0003] The utility model discloses a bolt structure of anti -loosening to solve the problem raised in above -mentioned background art.

[0004] In order to achieve the above -mentioned purpose, the utility model provides the following technical scheme: a bolt structure of anti -loosening, including bolt and two workpieces, the bolt thread penetrates two workpieces, and the outer wall of bolt is provided with two first threads and single second thread respectively, the second thread is located between two first threads, the outer wall of first thread in upper portion is threadedly equipped with the nut, the bottom of nut is connected with the soft metal gasket, and the outer wall of soft metal gasket is fixedly equipped with the tooth ring, and the soft metal gasket is threadedly connected on the outer wall of second thread.

[0005] As a further scheme of the utility model: the bottom of bolt is fixedly connected with the nut, and the top of nut and the bottom of lower workpiece are closely attached.

[0006] As a further scheme of the utility model: the top of two workpieces is all through the screw hole of being seted up, and two screw holes are threadedly connected with the first thread below.

[0007] As a further scheme of the utility model: the inner wall of nut is provided with the second internal thread, and the second internal thread is threadedly connected with the first thread above.

[0008] As a further scheme of the utility model: the inner wall of soft metal gasket is provided with the first internal thread, and the first internal thread is threadedly connected with the second thread.

[0009] As a further scheme of the utility model: the bottom of nut is provided with the tooth ring groove, and soft metal gasket and tooth ring are clamped in tooth ring groove.

[0010] As a further embodiment of this utility model: the nut surrounds the soft metal washer, and the soft metal washer fits against the bottom of the nut and the top of the workpiece above it.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] When the nut is installed and rotated to lock the bolt, the toothed groove under the nut will be filled by the soft metal washer and toothed ring due to the locking force. At this time, the bolt and nut will become one, which can provide different pitch tensions together, thus obtaining two different pitch connections, the first thread and the second thread, on the same bolt. Since the pitch of the first thread and the second thread is different, the distance the nut moves with each rotation is also different, which will form a mutually restrictive state to prevent the bolt and nut from loosening.

[0013] This invention is simple to use. By setting two threads with different pitches, the first thread and the second thread, on the bolt, the locking force of the bolt and nut can be used to make the soft metal washer and the first internal thread fill the toothed ring groove and the second thread. Then, the first thread and the second thread form a mutually restrictive state due to their different pitches, thereby preventing the bolt and nut from loosening. Attached Figure Description

[0014] Fig. 1 This is a three-dimensional schematic diagram of the entire utility model;

[0015] Fig. 2 This is a three-dimensional exploded view of the present invention;

[0016] Fig. 3 This is a three-dimensional schematic diagram of the soft metal gasket in this utility model;

[0017] Fig. 4 This is a three-dimensional diagram showing the disassembled nut in this utility model;

[0018] Fig. 5 This is a three-dimensional schematic diagram of the nut in this utility model;

[0019] Fig. 6 This is a cross-sectional view of the present invention.

[0020] In the diagram: 1. Bolt; 2. Nut; 3. First thread; 4. Nut; 5. Workpiece; 6. Threaded hole; 7. Second thread; 8. Gear ring; 9. Soft metal washer; 10. First internal thread; 11. Second internal thread; 12. Gear ring groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Please see Figs. 1-6 In this embodiment of the utility model, an anti-loosening bolt structure includes a bolt 1 and two workpieces 5. The bolt 1 is threaded through the two workpieces 5, and the outer wall of the bolt 1 is respectively provided with two sections of first thread 3 and a single section of second thread 7. The second thread 7 is located between the two sections of first thread 3. A nut 4 is threadedly fitted on the outer wall of the upper first thread 3. A soft metal washer 9 is snapped into the bottom of the nut 4, and a toothed ring 8 is fixedly fitted on the outer wall of the soft metal washer 9. The soft metal washer 9 is threadedly connected to the outer wall of the second thread 7.

[0023] In this embodiment, the bottom end of the bolt 1 is fixedly connected to the nut 2, and the top of the nut 2 and the bottom of the workpiece 5 located below are in close contact.

[0024] In this embodiment, both workpieces 5 have through screw holes 6 at their tops, and the two screw holes 6 are threadedly connected to the first thread 3 below.

[0025] In this embodiment, the inner wall of the nut 4 is provided with a second internal thread 11, and the second internal thread 11 and the upper first thread 3 are threadedly connected. The bolt 1 can be threadedly installed with multiple workpieces 5 through the lower first thread 3. The upper first thread 3 can be threadedly fitted with the nut 4. The second thread 7 in the middle part of the bolt 1 can be threadedly fitted with a soft metal washer 9. The outer wall of the soft metal washer 9 is provided with a toothed ring 8. When the nut 4 is installed and rotated to lock with the bolt 1, the toothed ring groove 12 under the nut 4 will be filled by the soft metal washer 9 and the toothed ring 8 due to the locking force. At this time, the bolt 1 and the nut 4 will be integrated.

[0026] In this embodiment, the inner wall of the soft metal gasket 9 is provided with a first internal thread 10, and the first internal thread 10 is threadedly connected to the second thread 7.

[0027] In this embodiment, a toothed ring groove 12 is provided at the bottom of the nut 4, and the soft metal washer 9 and the toothed ring 8 are engaged in the toothed ring groove 12.

[0028] In this embodiment, the nut 4 surrounds the soft metal washer 9, and the soft metal washer 9 is in contact with the bottom of the nut 4 and the top of the workpiece 5 above it.

[0029] The working principle of this utility model is as follows: Bolt 1 can be threaded to multiple workpieces 5 through the lower first thread 3, and nut 4 can be threaded onto the upper first thread 3. Soft metal washer 9 can be threaded onto the middle part of bolt 1 through the second thread 7. A toothed ring 8 is provided on the outer wall of the soft metal washer 9. When nut 4 is installed and rotated to lock with bolt 1, the toothed ring groove 12 below nut 4 will be filled by soft metal washer 9 and toothed ring 8 due to the locking force. At this time, bolt 1 and nut 4 will become integrated, thus providing different pitch tensions. Therefore, two different pitch connections, first thread 3 and second thread 7, can be obtained on the same bolt 1. Since the pitch of first thread 3 and second thread 7 is different, the distance moved by nut 4 per revolution is also different, which will form a mutually restrictive state to prevent loosening between bolt 1 and nut 4.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bolt structure for preventing loosening, comprising a bolt (1) and two workpieces (5), characterized in that: The bolt (1) is threaded through two workpieces (5), and the outer wall of the bolt (1) is provided with two sections of first thread (3) and a single section of second thread (7). The second thread (7) is located between the two sections of first thread (3). A nut (4) is threaded on the outer wall of the upper first thread (3). A soft metal washer (9) is snapped into the bottom of the nut (4), and a toothed ring (8) is fixedly fitted on the outer wall of the soft metal washer (9). The soft metal washer (9) is threaded through and connected to the outer wall of the second thread (7).

2. The anti-loosening bolt structure according to claim 1, characterized in that: The bottom end of the bolt (1) is fixedly connected to a nut (2), and the top of the nut (2) and the bottom of the workpiece (5) below are in close contact.

3. The anti-loosening bolt structure according to claim 1, characterized in that: Both workpieces (5) have through screw holes (6) on their tops, and the two screw holes (6) are threadedly connected to the first thread (3) below.

4. The anti-loosening bolt structure according to claim 1, characterized in that: The inner wall of the nut (4) is provided with a second internal thread (11), and the second internal thread (11) and the first thread (3) above are threadedly connected.

5. The anti-loosening bolt structure according to claim 1, characterized in that: The inner wall of the soft metal gasket (9) is provided with a first internal thread (10), and the first internal thread (10) is threadedly connected to the second thread (7).

6. The anti-loosening bolt structure according to claim 1, characterized in that: The bottom of the nut (4) is provided with a toothed ring groove (12), and the soft metal washer (9) and the toothed ring (8) are engaged in the toothed ring groove (12).

7. The anti-loosening bolt structure according to claim 1, characterized in that: The nut (4) surrounds the soft metal washer (9), and the soft metal washer (9) is in contact with the bottom of the nut (4) and the top of the workpiece (5) above it.

Images