Bolt structure with nut anti-retreating function

Abstract

The utility model relates to the technical field of bolts, one embodiment of the utility model provides a bolt structure with a nut anti-retreating function, the bolt structure comprises a screwing cap, a threaded rod is arranged at the lower end of the screwing cap, a screwing connecting assembly is arranged on the screwing cap and the threaded rod, and a resistance-increasing screwing assembly is arranged at the bottom of the threaded rod; the positioning disc is arranged at the upper end of the threaded rod, a multi-specification hexagonal screwing sleeve is arranged on the upper end face of the positioning disc, an inserting hole is formed in the top of the multi-specification hexagonal screwing sleeve, a driving frame is inserted into the inserting hole, a driving ring is arranged on the top of the driving frame, a cross frame is arranged on the inner side wall of the driving frame, and a driving hole is formed in the cross frame. According to the technical scheme, the technical problem that long-term reliable connection is difficult to guarantee due to the fact that the anti-loosening effect of some common anti-loosening measures in the related technology / the prior art is gradually weakened along with the increase of the service time or under the severe environment condition although the anti-loosening effect can be achieved to a certain extent is solved.

Description

Technical Field

[0001] The embodiments of this disclosure relate to the field of bolt technology, and more specifically, to a bolt structure with nut anti-reverse mechanism. Background Technology

[0002] In the field of mechanical connections, bolted connections are a common method of connection, widely used in the assembly of various equipment, structural components, and machinery. However, in practical use, the problems of nut loosening and unthreading have always been a challenge for engineers. On the one hand, under dynamic loads such as vibration and impact, the threaded connection between the nut and bolt is prone to loosening. During the operation of automobile engines and mechanical equipment, due to continuous vibration, the nut may gradually loosen or even fall off, leading to connection failure, affecting the normal operation of the equipment, and in severe cases, even causing safety accidents. On the other hand, existing bolt structures also have certain limitations in terms of tightening operations. Traditional bolt tightening methods typically require specific sizes of wrenches and other tools. If the tool size does not match the bolt, it cannot be effectively tightened, which brings many inconveniences in actual operation. Moreover, for some special working conditions or locations with limited space, tightening traditional bolts is more difficult and may require a lot of time and effort to complete the installation and disassembly work. In addition, existing anti-loosening structures need to be improved in terms of anti-loosening effect and structural stability. Some common anti-loosening measures, such as the use of spring washers and cotter pins, can play a role in preventing loosening to a certain extent, but their anti-loosening effect will gradually weaken with the increase of use time or under harsh environmental conditions, making it difficult to guarantee a long-term reliable connection. Utility Model Content

[0003] To overcome the above-mentioned defects, the embodiments of this disclosure provide a bolt structure with nut anti-loosening, which solves the technical problem that some common anti-loosening measures in related technologies / prior technologies can play an anti-loosening role to a certain extent, but their anti-loosening effect will gradually weaken with the increase of use time or under harsh environmental conditions, making it difficult to guarantee a long-term reliable connection.

[0004] According to one aspect, at least one embodiment of this disclosure provides a bolt structure with nut anti-loosening features, comprising:

[0005] A screw cap, wherein the lower end of the screw cap is provided with a threaded rod;

[0006] A screw-on connection assembly, wherein the screw-on connection assembly is disposed on the screw cap and the threaded rod;

[0007] A resistance-applying screw-tightening assembly is disposed at the bottom of the threaded rod;

[0008] The screw-connecting assembly includes a positioning plate, which is disposed at the upper end of the threaded rod. The upper surface of the positioning plate is provided with a multi-specification hexagonal screw-connecting sleeve. The top of the multi-specification hexagonal screw-connecting sleeve is provided with an insertion hole. A drive frame is inserted into the insertion hole. A drive ring is provided at the top of the drive frame. A cross frame is provided on the inner side wall of the drive frame. A drive hole is opened inside the cross frame.

[0009] As a further technical solution, the multi-specification hexagonal screw sleeve is composed of multiple hexagonal pieces arranged and spliced ​​in descending order of size.

[0010] As a further technical solution, the resistance-applying screwing assembly includes a threaded cap, which is screwed onto the threaded rod. The outer side wall of the screwing cap is provided with a hexagonal screwing surface, and the upper end of the screwing cap is provided with a flipping groove. A flipping resistance block is provided inside the flipping groove.

[0011] As a further technical solution, the number of the flipping grooves and the flipping resistance blocks is several, and the multiple flipping grooves and the flipping resistance blocks are evenly arranged on the upper end face of the threaded cap.

[0012] As a further technical solution, the side wall of the flipping resistance block is provided with an anti-slip pad, and a rotation shaft is inserted into the flipping resistance block, with the opposite ends of the rotation shaft embedded inside the flipping groove.

[0013] As a further technical solution, the inner wall of the flipping groove is provided with a relief cavity, which corresponds to the position of the anti-slip pad, and the anti-slip pad is a semi-circular raised structure.

[0014] As a further technical solution, the upper end face of the threaded cap is provided with an extension tube, the top of the extension tube is provided with an anti-slip contact pad, the extension tube is connected to the threaded cap, and the interior of the extension tube is provided with an internal thread that meshes with the threaded rod.

[0015] As a further technical solution, the bottom of the drive frame has an insertion slot, and the insertion slot corresponds to the structure of the insertion hole.

[0016] As a further technical solution, a smooth shaft is provided at the bottom of the threaded rod, the smooth shaft is matched with the diameter of the threaded rod, and the smooth shaft is inserted into the interior of the threaded cap.

[0017] The beneficial effects of the embodiments disclosed herein are as follows:

[0018] 1. In this disclosure, after the bolt is installed, the flip-up resistance block can be flipped from the flip-up groove to contact the surface of the object being connected. Since the side wall of the flip-up resistance block is provided with an anti-slip pad, and the anti-slip pad has a semi-circular raised structure, it can increase the friction with the surface of the object being connected, thereby effectively preventing the nut from loosening and disengaging due to vibration or other reasons.

[0019] 2. In this disclosure, the multi-specification hexagonal screw tightening sleeve is composed of multiple hexagonal pieces arranged and spliced ​​in descending order of size. It can be adapted to various wrenches or drive tools of different specifications. Operators no longer need to worry about finding the right screw tightening tool. Regardless of the size of the tool at hand, the multi-specification hexagonal screw tightening sleeve can be used to effectively tighten the bolt. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0022] Figure 2 This is an axle view of the drive frame disclosed herein;

[0023] Figure 3 This is a side view of the threaded cap disclosed herein;

[0024] Figure 4 This is an isometric view of the flip-type resistance block disclosed herein;

[0025] In the diagram: 1. Screw cap; 2. Threaded rod; 3. Screw connection assembly; 3-1. Positioning plate; 3-2. Multi-specification hexagonal screw sleeve; 3-3. Insertion hole; 3-4. Drive frame; 3-5. Drive ring; 3-6. Cross frame; 3-7. Drive hole; 4. Resistance screw assembly; 4-1. Threaded cap; 4-2. Hexagonal screw surface; 4-3. Flip groove; 4-4. Flip resistance block; 4-5. Anti-slip pad; 4-6. Rotation shaft; 4-7. Clearance cavity; 5. Extension tube; 6. Anti-slip contact pad; 7. Internal thread; 8. Smooth shaft; 9. Insertion groove. Detailed Implementation

[0026] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0027] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0028] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0029] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] like Figures 1-4 As shown, it illustrates a bolt structure with nut anti-retraction feature of this disclosure, comprising:

[0033] A screw cap 1, with a threaded rod 2 at its lower end;

[0034] Screw-connecting assembly 3 is disposed on screw cap 1 and threaded rod 2;

[0035] Resistance screwing assembly 4 is located at the bottom of threaded rod 2;

[0036] The screw-connecting assembly 3 includes a positioning plate 3-1, which is located at the upper end of the threaded rod 2. The upper surface of the positioning plate 3-1 is provided with a multi-specification hexagonal screw-connecting sleeve 3-2. The top of the multi-specification hexagonal screw-connecting sleeve 3-2 is provided with an insertion hole 3-3. A drive frame 3-4 is inserted into the insertion hole 3-3. A drive ring 3-5 is provided at the top of the drive frame 3-4. A cross frame 3-6 is provided on the inner side wall of the drive frame 3-4. A drive hole 3-7 is opened inside the cross frame 3-6.

[0037] In some examples, the multi-specification hexagonal screw sleeve 3-2 on the positioning plate 3-1 can be screwed by various wrenches of different sizes. After the cross bracket 3-6 is inserted into the insertion hole 3-3, the drive shaft can be rotated by inserting the drive ring 3-5 on the cross bracket 3-6, which can also rotate the multi-specification hexagonal screw sleeve 3-2. The drive hole 3-7 has the same effect as the drive ring 3-5.

[0038] For example, such as Figure 1 As shown, the multi-specification hexagonal screw sleeve 3-2 is composed of multiple hexagonal pieces arranged and spliced ​​in descending order of size.

[0039] In some examples, multi-size hexagonal screwdrivers can be tightened using wrenches of various sizes, thus diversifying their tightening drive.

[0040] like Figures 1-4 As shown, this embodiment proposes a resistance-applying screwing assembly 4, which includes a threaded cap 4-1, which is screwed onto a threaded rod 2. The outer side wall of the screwing cap 1 is provided with a hexagonal screwing surface 4-2, and the upper end of the screwing cap 1 is provided with a flip groove 4-3. A flip resistance block 4-4 is provided inside the flip groove 4-3.

[0041] In some examples, the hexagonal screwing surface 4-2 on the threaded cap 4-1 can be screwed with a wrench. After the flipping resistance block 4-4 in the flipping groove 4-3 flips out, it can increase the force-bearing surface of the hexagonal screwing surface 4-2, making it more secure after screwing.

[0042] For example, such as Figure 3 As shown, there are several flip grooves 4-3 and flip resistance blocks. Multiple flip grooves 4-3 and flip resistance blocks 4-4 are evenly arranged on the upper end face of the threaded cap 4-1. Anti-slip pads 4-5 are provided on the side wall of the flip resistance block 4-4. A self-rotating shaft 4-6 is inserted into the flip resistance block 4-4. The two opposite ends of the self-rotating shaft 4-6 are embedded in the interior of the flip groove 4-3.

[0043] In some examples, the anti-slip pad 4-5 is used to reduce shelf friction when the flip-up resistance block is inside the flip-up slot 4-3, and to prevent the flip-up resistance block from flipping out when the screw cap 1 is stored. The self-rotating shaft 4-6 is used to connect the flip-up resistance block so that the flip-up resistance block can be flipped.

[0044] For example, such as Figure 3 As shown, the inner wall of the flip groove 4-3 is provided with a relief cavity 4-7, which corresponds to the position of the anti-slip pad 4-5. The anti-slip pad 4-5 is a semi-circular protruding structure.

[0045] In some examples, the relief cavity 4-7 can be slightly fitted with the anti-slip pad 4-5 on the flip-up resistance block to increase resistance.

[0046] For example, such as Figure 3 As shown, the upper end face of the threaded cap 4-1 is provided with an extension tube 5, the top of the extension tube 5 is provided with an anti-slip contact pad 6, the extension tube 5 is connected to the threaded cap 4-1, and the interior of the extension tube 5 is provided with an internal thread 7, which meshes with the threaded rod 2.

[0047] In some examples, the extension tube 5 can extend the height of the threaded cap 4-1, while the anti-slip contact pad 6 increases the resistance of the threaded cap 4-1 after screwing, preventing it from falling off.

[0048] For example, such as Figure 2 As shown, the bottom of the drive frame 3-4 has an insertion slot 9, which corresponds to the structure of the insertion hole 3-3.

[0049] In some examples, the insertion slot 9 is used for the drive frame 3-4 to be inserted into the insertion hole 3-3.

[0050] For example, such as Figure 1 As shown, a smooth shaft 8 is provided at the bottom of the threaded rod 2. The smooth shaft 8 matches the diameter of the threaded rod 2 and is inserted into the inside of the threaded cap 4-1.

[0051] In some examples, the smooth shaft 8 is used for pre-insertion of the extension tube 5, assisting in screwing the extension tube 5 into the threaded rod 2.

[0052] After the bolts are installed normally, the rotating resistance block 4-4 is in the rotating groove 4-3, and the anti-slip pad 4-5 is in the relief cavity 4-7. At this time, the screwing operation of the nut is relatively smooth. Manually rotate the rotating resistance block 4-4 so that it rotates out of the rotating groove 4-3. At this time, the anti-slip pad 4-5 will contact the surface of the nut. Since the anti-slip pad 4-5 is a semi-circular convex structure, it can increase the friction with the surface of the nut. At the same time, the anti-slip contact pad 6 at the top of the extension tube 5 will also contact the surface of the connecting parts, further increasing the anti-reverse effect. The multi-specification hexagonal screw-lock sleeve 3-2 can be screwed with various wrenches of different specifications. After the cross bracket 3-6 is inserted into the insertion hole 3-3, the drive ring 3-5 on the cross bracket 3-6 can be inserted into the drive shaft for rotation, which can also make the multi-specification hexagonal screw-lock sleeve 3-2 rotate. The driving hole 3-7 and the driving ring 3-5 have the same effect.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A bolt structure with nut anti-loosening feature, characterized in that, include: A screw cap (1) is provided with a threaded rod (2) at its lower end; A screw-on connection assembly (3) is disposed on the screw cap (1) and the threaded rod (2); A resistance screwing assembly (4) is disposed at the bottom of the threaded rod (2); The screw-connecting assembly (3) includes a positioning plate (3-1), which is located at the upper end of the threaded rod (2). The upper surface of the positioning plate (3-1) is provided with a multi-specification hexagonal screw sleeve (3-2). The top of the multi-specification hexagonal screw sleeve (3-2) is provided with an insertion hole (3-3). A drive frame (3-4) is inserted into the insertion hole (3-3). The top of the drive frame (3-4) is provided with a drive ring (3-5). The inner side wall of the drive frame (3-4) is provided with a cross frame (3-6). The cross frame (3-6) has a drive hole (3-7) inside.

2. The bolt structure with nut anti-loosening feature according to claim 1, characterized in that, The multi-specification hexagonal screw sleeve (3-2) is composed of multiple hexagonal pieces arranged and spliced ​​in descending order of size.

3. A bolt structure with nut anti-loosening feature according to claim 1, characterized in that, The resistance-applying screwing assembly (4) includes a threaded cap (4-1), which is screwed onto the threaded rod (2). The outer side wall of the screwing cap (1) is provided with a hexagonal screwing surface (4-2). The upper end of the screwing cap (1) is provided with a flip groove (4-3), and the interior of the flip groove (4-3) is provided with a flip resistance block (4-4).

4. A bolt structure with nut anti-loosening feature according to claim 3, characterized in that, The number of the flip grooves (4-3) and the flip resistance blocks (4-4) is several, and the multiple flip grooves (4-3) and the flip resistance blocks (4-4) are evenly arranged on the upper end face of the threaded cap (4-1).

5. A bolt structure with nut anti-loosening feature according to claim 3, characterized in that, The side wall of the flipping resistance block is provided with anti-slip pads (4-5), and a rotation shaft (4-6) is inserted into the flipping resistance block (4-4). The two opposite ends of the rotation shaft (4-6) are embedded in the interior of the flipping groove (4-3).

6. A bolt structure with nut anti-loosening feature according to claim 5, characterized in that, The inner wall of the flip groove (4-3) is provided with a relief cavity (4-7), which corresponds to the position of the anti-slip pad (4-5). The anti-slip pad (4-5) is a semi-circular raised structure.

7. A bolt structure with nut anti-loosening feature according to claim 3, characterized in that, The upper end face of the threaded cap (4-1) is provided with an extension tube (5), and the top of the extension tube (5) is provided with an anti-slip contact pad (6). The extension tube (5) is connected to the threaded cap (4-1), and the extension tube (5) is provided with an internal thread (7), which meshes with the threaded rod (2).

8. A bolt structure with nut anti-loosening feature according to claim 1, characterized in that, The bottom of the drive frame (3-4) has an insertion slot (9), which corresponds to the structure of the insertion hole (3-3).

9. A bolt structure with nut anti-loosening feature according to claim 3, characterized in that, The bottom of the threaded rod (2) is provided with a smooth shaft (8), which matches the diameter of the threaded rod (2) and is inserted into the inside of the threaded cap (4-1).

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