Combined lock screw

Abstract

The utility model provides a combined anti-loose screw, which relates to the technical field of screws and comprises a connecting main body, a threaded groove is arranged above the connecting main body, a locking frame is mounted in the threaded groove, a threaded rod is mounted above the connecting main body, and a group of anti-loose structures are mounted on the outer sides of the connecting main body and the threaded rod. The first anti-loosening pad and the second anti-loosening pad which are provided with the inclined blocks achieve first anti-loosening of the screw, the threaded rod is composed of two reverse threads, the first anti-loosening nut and the second anti-loosening nut are installed on the basis of the threads, and the first anti-loosening nut and the second anti-loosening nut are matched with the reverse threads to achieve second anti-loosening of the screw. And the reinforcing frame supported by the spring is arranged to realize the third locking of the screw, so that the problem that the locking effect is poor when the screw is matched with a gasket at present is solved, and the problem that the screw is troublesome to disassemble and assemble after being locked by virtue of a bolt at present is solved.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, and in particular to a combined anti-loosening screw. Background Technology

[0002] In the field of mechanical assembly and connection, screws are a widely used fastener. However, under many working conditions, such as vibration environments and frequent stress changes, traditional screws are prone to loosening. This can lead to connection failure of the assembly, causing equipment malfunctions, or even safety accidents. Current screws using spring washers and nylon washers for anti-loosening have the following shortcomings:

[0003] Under some extreme conditions and high-frequency vibrations, the anti-loosening effect of spring washers and nylon washers is still not ideal, causing the screw to lose its anti-loosening effect and loosen. Another way to loosen the screw is to install a locking pin on the basis of the screw's locking nut. This method increases the number of additional parts and assembly complexity, which reduces the ease of assembly and anti-loosening of the anti-loosening bolt.

[0004] In addition, since screws currently require machining as a whole when processing threads, the processing cost and operation steps of screws of different lengths have increased. Utility Model Content

[0005] This utility model discloses a combined anti-loosening screw. The operator assembles the connecting body, threaded rod and locking frame into a screw. The operator can unlock the threaded rod by pressing the locking frame down. The anti-loosening washer and anti-loosening nut are installed on the outside of the threaded rod. The screw can be prevented from loosening by flipping the reinforcing frame upward.

[0006] In a first aspect, this disclosure provides a combined anti-loosening screw, specifically comprising: a connecting body, a threaded groove formed at the upper position of the connecting body, a locking frame installed inside the threaded groove, a threaded rod installed at the upper position of the connecting body, and an anti-loosening structure installed on the outer side of the connecting body and the threaded rod, the anti-loosening structure comprising a first anti-loosening washer, a second anti-loosening washer, a positioning plate, a reinforcing frame, a first anti-loosening nut, and a second anti-loosening nut.

[0007] Furthermore, a threaded connecting block is provided at the bottom of the threaded rod, and the threaded connecting block is threadedly connected to the threaded groove of the connecting body. The connecting body and the threaded rod are set separately, and the connecting body is a smooth rod structure.

[0008] Furthermore, the connecting body has two positioning slots at the top that communicate with the threaded groove, and a vertical locking block is provided on each side of the locking frame. The locking block is installed inside the locking slot, and a support spring is installed inside the threaded groove of the connecting body.

[0009] Furthermore, the locking block of the locking frame has a set of friction grooves on its outer side, and the reinforcing frame also has a set of friction grooves on both sides. The friction grooves are arc-shaped.

[0010] Furthermore, the locking block of the locking frame has an inclined block at the upper position, and a set of locking grooves corresponding to the inclined block are opened at the bottom position of the threaded rod, and the inclined block and the locking grooves engage.

[0011] Furthermore, the outer side of the threaded rod is provided with two opposite external threads, and a first anti-loosening nut and a second anti-loosening nut are installed at the position of the external threads. The internal threads of the first anti-loosening nut and the second anti-loosening nut have opposite helical directions.

[0012] Furthermore, a first anti-loosening washer is installed on the outer side of the connecting body, and a second anti-loosening washer is installed on the outer side of the threaded rod. A set of locking wedges is provided above the first anti-loosening washer, and the locking wedges are distributed in a ring array above the first anti-loosening washer. A set of locking grooves corresponding to the locking wedges are opened at the bottom of the second anti-loosening washer, and the locking wedges and locking grooves engage.

[0013] Furthermore, a rotating groove is provided on each side of the second anti-loosening pad. The rotating groove is a cylindrical structure. A rotating block is provided on one side of the positioning plate. The rotating block is a cylindrical structure and extends into the interior of the rotating groove. A vertical sliding hole is provided on one side of the positioning plate. The bottom position of the reinforcing frame passes through the interior of the sliding hole.

[0014] Furthermore, a set of slots arranged in a ring array are opened at the upper position of the threaded rod, the upper position of the reinforcing frame extends into the interior of the slots, and two support springs and two retaining rings are installed at the bottom position of the reinforcing frame.

[0015] This utility model provides a combined anti-loosening screw, which has the following beneficial effects:

[0016] The connecting body with a bare rod structure is assembled with a threaded rod to form a new type of screw. The staff can select the corresponding length of the connecting body according to the thickness of the installation position, which saves the cost of machining threads for screws of different lengths as a whole.

[0017] Specifically, a spring-supported locking frame is set between the connecting body and the threaded rod. After the connecting body and the threaded rod are spliced ​​together, they work together with the locking frame to achieve a stable effect. Pressing the locking frame down can unlock the threaded rod, which can then be easily removed.

[0018] Based on the new type of screw, an anti-loosening structure consisting of a first anti-loosening washer, a second anti-loosening washer, a positioning plate, a reinforcing frame, a first anti-loosening nut, and a second anti-loosening nut is set up.

[0019] The first and second anti-loosening washers with inclined blocks provide the first level of anti-loosening for the screw.

[0020] The threaded rod consists of two reverse threads. A first anti-loosening nut and a second anti-loosening nut are installed on the thread. The first anti-loosening nut and the second anti-loosening nut work together with the reverse threads to achieve the second anti-loosening effect on the screw.

[0021] The reinforced frame with spring support provides a third layer of anti-loosening for the screws, solving the problem of poor anti-loosening effect of screws with washers and the problem of cumbersome disassembly and assembly after screws are locked with pins. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0023] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0024] In the attached diagram:

[0025] Figure 1 This paper shows a schematic diagram of the axial structure after the screws and anti-loosening structure of this application are assembled;

[0026] Figure 2 This application shows Figure 1 A schematic diagram of the axonal structure from an elevation viewpoint;

[0027] Figure 3 An axonometric schematic diagram of the vertical cross-sectional structure of the screw and anti-loosening structure of this application is shown;

[0028] Figure 4 An axonometric schematic diagram of the screw and anti-loosening structure of this application is shown;

[0029] Figure 5 This application shows Figure 4 A schematic diagram of the axonal structure from an elevation viewpoint;

[0030] Figure 6 This application shows an isometric view of the connection body and the partially disassembled threaded rod structure.

[0031] Figure 7 This application shows Figure 6 A schematic diagram of the axonal structure from an elevation viewpoint;

[0032] Figure 8 This application shows Figure 3 A schematic diagram of the main structure.

[0033] List of reference numerals

[0034] 1. Connecting main body;

[0035] 2. Locking bracket;

[0036] 3. Threaded rod;

[0037] 4. Anti-loosening structure; 401. First anti-loosening pad; 402. Second anti-loosening pad; 403. Positioning plate; 404. Reinforcing frame; 405. First anti-loosening nut; 406. Second anti-loosening nut. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] Example 1: Please refer to Figures 1 to 8 :

[0040] This utility model proposes a combined anti-loosening screw, including: a connecting body 1, a threaded groove is opened at the upper position of the connecting body 1, a locking frame 2 is installed inside the threaded groove, two positioning grooves communicating with the threaded groove are opened at the upper position of the connecting body 1, and a vertical locking block is provided on each side of the locking frame 2. The locking blocks are installed inside the locking grooves. The positioning grooves realize the circumferential positioning effect of the locking frame 2 and the locking blocks, so that the locking frame 2 and the locking blocks can move stably up and down in the position of the sliding groove. A support spring is installed inside the threaded groove of the connecting body 1. Referring to the attached drawings, the support spring elastically supports the locking frame 2 and the locking blocks upward.

[0041] In this embodiment of the disclosure, reference is made to Figures 1 to 8As shown, a threaded rod 3 is installed at the top of the connecting body 1, and a threaded connecting block is provided at the bottom of the threaded rod 3. The threaded connecting block and the threaded groove of the connecting body 1 are threadedly connected. The threaded rod 3, together with the threaded connecting block and the connecting body 1, are stably positioned. The connecting body 1 and the threaded rod 3 cooperate to form a new type of screw. The connecting body 1 and the threaded rod 3 are set separately. The staff selects the corresponding length of the connecting body 1 according to the thickness of the installation position. The connecting body 1 is a smooth rod structure, which saves the cost of machining threads on the whole screw of different lengths. The locking block of the locking frame 2 has an inclined block at the top, and a set of locking grooves corresponding to the inclined block is opened at the bottom of the threaded rod 3. The inclined block and the locking grooves engage. Based on the one-way limiting principle of the inclined block structure and combined with the attached figure, it is concluded that the inclined block and the locking groove of the locking frame 2 cooperate to achieve the effect of circumferential locking of the threaded rod 3. Referring to the connection structure of the connecting body 1 and the threaded rod 3, the connecting body 1 and the threaded rod 3, after being spliced, cooperate with the locking frame 2 to achieve a stable effect. Pressing the locking frame 2 down can unlock the threaded rod 3. At this time, the threaded rod 3 can be flexibly removed.

[0042] In this embodiment of the disclosure, reference is made to Figures 1 to 8 As shown, an anti-loosening structure 4 is installed on the outer side of the connecting body 1 and the threaded rod 3. The anti-loosening structure 4 is composed of a first anti-loosening pad 401, a second anti-loosening pad 402, a positioning plate 403, a reinforcing frame 404, a first anti-loosening nut 405, and a second anti-loosening nut 406. The locking block of the locking frame 2 has a set of friction grooves on its outer side, and the reinforcing frame 404 also has a set of friction grooves on both sides. The friction grooves are arc-shaped. When the operator places their finger on the friction groove and applies pressure to the friction groove, the locking frame 2 can be easily moved towards the locking point. Press down, and the reinforcing frame 404 can be easily lifted in the same way. The outer side of the threaded rod 3 has two opposite external threads. A first anti-loosening nut 405 and a second anti-loosening nut 406 are installed at the position of the external threads. After installation, the first anti-loosening nut 405 and the second anti-loosening nut 406 are locked to the outside of the threaded rod 3 by the threads. The internal threads of the first anti-loosening nut 405 and the second anti-loosening nut 406 have opposite helical directions. The first anti-loosening nut 405 and the second anti-loosening nut 406 work together with the two opposite external threads to achieve the effect of screw anti-loosening.

[0043] In this embodiment of the disclosure, reference is made to Figures 1 to 8As shown, a first anti-loosening washer 401 is installed on the outer side of the connecting body 1, and a second anti-loosening washer 402 is installed on the outer side of the threaded rod 3. A set of locking wedges is provided above the first anti-loosening washer 401, and the locking wedges are distributed in a circular array above the first anti-loosening washer 401. A set of locking grooves corresponding to the locking wedges is opened at the bottom of the second anti-loosening washer 402. The locking wedges and locking grooves engage. After installation, the first anti-loosening nut 405 and the second anti-loosening nut 406 press the first anti-loosening washer 401 and the second anti-loosening washer 402 together. According to the one-way limiting principle of the locking wedges, the first anti-loosening washer 401 and the second anti-loosening washer 402 cooperate with the first anti-loosening nut 405 and the second anti-loosening nut 406 to tighten the first anti-loosening washer 401 and the second anti-loosening washer 402. The female 406 can further achieve the effect of preventing screw loosening. A rotating groove is opened on each side of the second anti-loosening pad 402. The rotating groove is a cylindrical structure. A rotating block is provided on one side of the positioning plate 403. The rotating block is a cylindrical structure and extends into the interior of the rotating groove. With the cooperation of the rotating groove and the rotating block, the positioning plate 403 is hinged to both sides of the second anti-loosening pad 402. A vertical sliding hole is opened on one side of the positioning plate 403. The bottom position of the reinforcing frame 404 passes through the interior of the sliding hole. After installation, the reinforcing frame 404 horizontally positions the installation position of the two positioning plates 403. In addition, when the reinforcing frame 404 swings, it can drive the two positioning plates 403 to rotate in the position of the rotating groove.

[0044] In this embodiment of the disclosure, reference is made to Figures 1 to 8 As shown, a set of slots arranged in a circular array are opened at the upper position of the threaded rod 3. The upper position of the reinforcing frame 404 extends into the interior of the slots. Referring to the attached figure, it can be concluded that after the reinforcing frame 404 is flipped upward, it can simultaneously perform circumferential positioning of the threaded rod 3 and the second anti-loosening washer 402. The reinforcing frame 404 achieves the third anti-loosening effect of the screw. Two support springs and two retaining springs are installed at the bottom position of the reinforcing frame 404. The retaining springs can make the support springs pull the reinforcing frame 404 downward. The support springs are set to facilitate the operation of the reinforcing frame 404 and to facilitate the unlocking and locking of the screw.

[0045] Example 2, based on Example 1, with reference to Figures 1 to 8 The diagram shows a partial structural view of an object installed on the outer side of the main body 1.

[0046] Example 3, based on Example 1, with reference to Figures 1 to 8 As shown, the double-threaded structure of the threaded rod 3 can be replaced with a single-threaded structure, and the second anti-loosening nut 406 can be removed.

[0047] Connecting body 1, locking frame 2, threaded rod 3, anti-loosening structure 4, first anti-loosening pad 401, second anti-loosening pad 402, positioning plate 403, reinforcing frame 404, first anti-loosening nut 405, second anti-loosening nut 406;

[0048] The working principle of this embodiment:

[0049] When assembling the screw, the workers first install a locking bracket 2 and a support spring at the threaded groove position of the connecting body 1. Then, the threaded rod 3 is installed on top of the connecting body 1 in conjunction with the threaded connecting block. At this time, the inclined block above the locking bracket 2 locks the threaded rod 3, thus completing the screw assembly.

[0050] When the connecting body 1 and the threaded rod 3 are separated, the operator places their finger on the friction groove of the locking frame 2 and applies a pressing pressure to the friction groove to easily press the locking frame 2 downward, and then separates the connecting body 1 and the threaded rod 3.

[0051] When preventing screws from loosening, the worker installs the screws in the mounting holes of the object as needed. The worker then assembles the second anti-loosening washer 402, the positioning plate 403, and the reinforcing frame 404. Next, the worker installs the first anti-loosening washer 401 and the second anti-loosening washer 402 on the outside of the threaded rod 3 in sequence. The worker then uses a wrench to install the first anti-loosening nut 405 and the second anti-loosening nut 406 on the outside of the threaded rod 3. At this time, the threaded rod 3 presses the first anti-loosening washer 401 and the second anti-loosening washer 402 tightly. The worker then flips the reinforcing frame 404 upwards, so that the upper part of the reinforcing frame 404 extends into the groove of the threaded rod 3. The first anti-loosening washer 401, the second anti-loosening washer 402, the positioning plate 403, the reinforcing frame 404, the first anti-loosening nut 405, and the second anti-loosening nut 406 work together to prevent the screws from loosening.

[0052] The following points should be noted in this article:

[0053] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0054] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0055] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A combination anti-loosening screw, comprising: The connection body (1), threaded rod (3), and anti-loosening structure (4) are connected. A threaded groove is opened at the upper position of the connection body (1). The characteristic is that a locking frame (2) is installed inside the threaded groove, a threaded rod (3) is installed at the upper position of the connection body (1), and a set of anti-loosening structures (4) is installed at the outer positions of the connection body (1) and the threaded rod (3). The anti-loosening structure (4) consists of a first anti-loosening pad (401), a second anti-loosening pad (402), a positioning plate (403), a reinforcing frame (404), and a third anti-loosening pad (405). A locking nut (405) and a second locking nut (406) are used together. A first locking washer (401) is installed on the outer side of the connecting body (1), and a second locking washer (402) is installed on the outer side of the threaded rod (3). A set of locking wedges is provided above the first locking washer (401). The locking wedges are arranged in a ring array above the first locking washer (401). A set of locking grooves corresponding to the locking wedges are opened at the bottom of the second locking washer (402). The locking wedges and the locking grooves are engaged.

2. The combined anti-loosening screw according to claim 1, characterized in that, A threaded connecting block is provided at the bottom of the threaded rod (3), and the threaded connecting block is threadedly connected to the threaded groove of the connecting body (1). The connecting body (1) and the threaded rod (3) are separate components.

3. The combined anti-loosening screw according to claim 1, characterized in that, The connecting body (1) has two positioning slots connected to the threaded groove at the top position. The locking frame (2) has a vertical locking block on each side. The locking block is installed inside the locking groove. A support spring is installed inside the threaded groove of the connecting body (1).

4. The combined anti-loosening screw according to claim 1, characterized in that, The locking block of the locking frame (2) has a set of friction grooves on its outer side, and the reinforcing frame (404) also has a set of friction grooves on both sides.

5. A combined anti-loosening screw according to claim 1, characterized in that, The locking block of the locking frame (2) has an inclined block at the top position, and a set of locking grooves corresponding to the inclined block are opened at the bottom position of the threaded rod (3), and the inclined block and the locking grooves engage.

6. A combined anti-loosening screw according to claim 1, characterized in that, The outer side of the threaded rod (3) is provided with two opposite external threads. A first anti-loosening nut (405) and a second anti-loosening nut (406) are installed at the position of the external threads. The internal threads of the first anti-loosening nut (405) and the second anti-loosening nut (406) have opposite helical directions.

7. A combined anti-loosening screw according to claim 1, characterized in that, The second anti-loosening pad (402) has a rotating groove on each side, and a rotating block is provided on one side of the positioning plate (403). The rotating block extends into the interior of the rotating groove. A vertical sliding hole is provided on one side of the positioning plate (403), and the bottom position of the reinforcing frame (404) passes through the interior of the sliding hole.

8. A combined anti-loosening screw according to claim 1, characterized in that, A set of slots arranged in a ring array are opened at the upper position of the threaded rod (3), and the upper position of the reinforcing frame (404) extends into the interior of the slots. Two support springs and two retaining rings are installed at the bottom position of the reinforcing frame (404).

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