Locking screw with self-locking structure

Abstract

The utility model discloses a locking screw with a self-locking structure, which comprises a T-shaped screw rod, and the screw rod comprises a rod body with threads, a thread groove which is arranged at the bottom of the rod body and is recessed inwards, and an insertion rod which is vertically arranged in the corresponding thread groove of the rod body; the self-locking mechanism comprises a sleeve body which is in threaded fit with the corresponding threaded groove of the rod body, a connecting rod is arranged in the sleeve body in a telescopic sliding mode, a plurality of locking pieces are rotatably arranged on the side, away from the threaded rod, of the connecting rod, and a plurality of penetrating openings corresponding to the locking pieces are formed in the side wall of the sleeve body; when the inserting rod is inserted into the sleeve body and pushes the connecting rod to move towards the side away from the rod body, the locking pieces are driven to rotate and penetrate through the penetrating openings. The self-locking screw has a self-locking function after being mounted and is stably positioned at a mounting position, so that actual use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fixing components, in particular to a locking screw with a self-locking structure. Background Art

[0002] A screw is a metal cylindrical part with spiral patterns, used to connect, fix or adjust parts of machines and equipment. When in use, a threaded mounting groove is usually set at the installation location, and then the screw is passed through the relevant part and driven into the threaded mounting groove to fix the relevant part at the installation location. However, since the screw installation locations are different, the screws are affected by vibration or other external forces during use, which weakens the fixing effect of the screws at the installation location, and then they become loose or even fall off from the installation location, resulting in connection failure, which limits their use. Utility Model Content

[0003] The purpose of the utility model is to provide a locking screw with a self-locking structure to solve the above-mentioned shortcomings. The screw has a self-locking function after installation and can be firmly positioned at the installation location.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solution: a locking screw with a self-locking structure, comprising:

[0005] The screw rod is T-shaped, and comprises a rod body with threads, a thread groove which is formed at the bottom of the rod body and is recessed inward, and an insert rod which is vertically arranged in the corresponding thread groove of the rod body;

[0006] The self-locking mechanism includes a sleeve body threadedly matched with the corresponding thread groove of the rod body, a connecting rod is telescopically and slidably arranged inside the sleeve body, a plurality of locking plates are rotatably arranged on the side of the connecting rod away from the screw rod, and a plurality of through-holes corresponding to the locking plates are opened on the side wall of the sleeve body. When the insertion rod is inserted into the sleeve body and pushes the connecting rod to move to the side away from the rod body, each of the locking plates is driven to rotate and pass through the through-holes.

[0007] Furthermore, the lateral end of the rod body away from the thread groove has a tool interface.

[0008] Furthermore, the self-locking mechanism also includes a cavity opened inside the sleeve and distributed up and down, and an adjustment cavity located between the upper and lower cavities and connected to each other is opened in the self-locking mechanism. The top and bottom ends of the connecting rod are respectively located in the two cavities, and the connecting rod is provided with a limit plate located in the adjustment cavity, and the limit plate is provided with a spring, and the other side of the spring is in contact with the inner wall of the cavity corresponding to the adjustment cavity.

[0009] Furthermore, the self-locking mechanism also includes a guide plate arranged on the bottom wall of the sleeve, and the top surface of the guide plate is arc-shaped. When the connecting rod moves to the side away from the rod body, the locking plate contacts the top surface of the guide plate, rotates with the change of the arc, and passes through the through hole.

[0010] Furthermore, a ratchet is provided in the corresponding cavity on the upper side inside the sleeve, and a pawl that cooperates with the ratchet is rotatably provided on the inner wall of the sleeve. A rectangular lock hole is opened at the center of the ratchet, and the insertion rod is rectangular in shape and fits the lock hole. When the rod body is rotated and installed on the sleeve, the insertion rod rotates and passes through the lock hole.

[0011] Furthermore, the insertion rod is a magnet rod, and the insertion rod can be magnetically matched with the connecting rod.

[0012] Furthermore, the surface of the locking plate has anti-slip textures.

[0013] The beneficial effects of the utility model are embodied in:

[0014] In the utility model, the staff first puts the self-locking mechanism into the installation groove at the installation location, and then rotates the screw into the installation groove. The screw gradually moves toward the side close to the self-locking mechanism. During the movement, the insertion rod will contact and push the connecting rod, and move the connecting rod to the side away from the screw 1. The movement of the connecting rod makes each locking piece contact the inner wall of the sleeve body and rotates with the connection with the connecting rod as the center. When rotating, the locking piece passes through the through opening and moves outside the sleeve body, thereby contacting the inner wall of the installation groove. When the rod body rotates in the installation groove, it will also be threaded with the sleeve body, so that the screw can be fixed in the installation groove very firmly, which is convenient for practical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional view of the utility model;

[0016] Figure 2 It is a structural sectional view of the utility model;

[0017] Figure 3 It is a cross-sectional view of the self-locking mechanism in the utility model.

[0018] In the figure:

[0019] 1. Screw; 11. Rod body; 12. Threaded groove; 13. Insert rod; 2. Self-locking mechanism; 21. Sleeve body; 22. Cavity; 23. Adjustment cavity; 24. Connecting rod; 25. Limiting plate; 26. Spring; 27. Locking plate; 28. Through-hole; 29. ​​Guide plate; 3. Ratchet. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 The utility model discloses a locking screw with a self-locking structure, including a screw rod 1. The screw rod 1 is T-shaped in shape. The screw rod 1 includes a rod body 11 with a thread, a thread groove 12 which is opened at the bottom of the rod body 11 and is recessed inward, and an insert rod 13 vertically installed in the corresponding thread groove 12 of the rod body 11. A self-locking mechanism 2 is provided at the bottom of the screw rod 1.

[0022] In one embodiment, the self-locking mechanism 2 includes a sleeve 21 threadedly matched with the corresponding thread groove 12 of the rod body 11, a connecting rod 24 is telescopically and slidably provided inside the sleeve 21, a plurality of locking plates 27 are rotatably provided on the side of the connecting rod 24 away from the screw rod 1, and a plurality of through-holes 28 corresponding to the locking plates 27 are opened on the side wall of the sleeve 21. When the insertion rod 13 is inserted into the sleeve 21 and pushes the connecting rod 24 to move to the side away from the rod body 11, each locking plate 27 is driven to rotate and pass through the through-holes 28.

[0023] In the specific implementation, the staff first puts the self-locking mechanism 2 into the installation groove at the installation location (the installation groove has an internal thread that matches the rod body 11), and then rotates the screw 1 into the installation groove. The screw 1 gradually moves toward the side close to the self-locking mechanism 2. During the movement, the insertion rod 13 will contact and push the connecting rod 24, and move the connecting rod 24 to the side away from the screw 1. The movement of the connecting rod 24 causes each locking piece 27 to rotate around the connection with the connecting rod 24. When rotating, the locking piece 27 passes through the through-opening 28 and moves to the outside of the sleeve 21, thereby contacting the inner wall of the installation groove. When the rod body 11 rotates in the installation groove, it will also be threadedly matched with the sleeve 21, so that the screw 1 can be fixed very firmly in the installation groove, which is convenient for actual use.

[0024] In one embodiment, a lateral end of the rod body 11 away from the thread groove 12 has a tool interface, and the tool interface is used to cooperate with a tool such as a screwdriver.

[0025] In one embodiment, the self-locking mechanism 2 also includes a cavity 22 opened inside the sleeve 21 and distributed up and down. An adjustment cavity 23 located between the upper and lower cavities 22 and connected to each other is opened in the self-locking mechanism 2. The top and bottom ends of the connecting rod 24 are respectively located in the two cavities 22. The connecting rod 24 is provided with a limit plate 25 located in the adjustment cavity 23. The limit plate 25 is provided with a spring 26. The other side of the spring 26 contacts the inner wall of the cavity 22 corresponding to the adjustment cavity 23.

[0026] In a specific implementation, when the insertion rod 13 approaches and pushes the connecting rod 24 to move, the limiting plate 25 will move synchronously to squeeze the spring 26, thereby causing the locking plate 27 to rotate, and the subsequent insertion rod 13 continues to limit the connecting rod 24, so that the locking plate 27 can be stably connected to the installation groove. Conversely, when the limiting of the connecting rod 24 by the insertion rod 13 is released, the spring 26 in a compressed state will expand, thereby pushing the connecting rod 24 in the reverse direction. At this time, the locking plate 27 will also rotate in the reverse direction, pass through the through opening 28 and retract into the sleeve 21. This design can make the screw very convenient to disassemble when it needs to be removed.

[0027] It can be understood that when the self-locking mechanism 2 is firmly connected to the mounting groove, the screw 1 can be separated from the self-locking mechanism 2 by rotating it in the opposite direction. At this time, the self-locking mechanism 2 is released from the limit, so that the self-locking mechanism 2 can be released from the mounting groove in the above manner.

[0028] In one embodiment, the self-locking mechanism 2 further includes a guide piece 29 mounted on the inner bottom wall of the sleeve body 21 , and the top surface of the guide piece 29 is in an arc shape.

[0029] With this design, when the connecting rod 24 moves toward the side away from the rod body 11, the locking piece 27 will contact the top surface of the guide piece 29, rotate with the change of the arc and pass through the through-hole 28. Conversely, when the connecting rod 24 moves toward the side close to the rod body 11, the locking piece 27 will also follow the arc surface of the guide piece 29 and be naturally retracted into the sleeve body 21, thereby ensuring that the locking piece 27 will not be stuck during adjustment.

[0030] In one embodiment, a ratchet 3 is installed in the corresponding cavity 22 on the upper side of the sleeve 21, and a pawl (not shown in the figure) that cooperates with the ratchet 3 is rotatably installed on the inner wall of the sleeve 21. A rectangular lock hole is opened at the center of the ratchet 3. When the rod body 11 is rotated and installed on the sleeve 21, the inserted rod 13 rotates and passes through the lock hole.

[0031] When the rod 11 is in the locking position, the rod 13 is locked in the locking position, and the locking nut 12 is engaged with the engagement ring 14. When the rod 11 is in the locking position, the engagement ring 14 is engaged with the engagement ring 14.

[0032] It is understandable that in order to ensure that the relevant components are installed in a fixed place for a long time, the screws that cannot be removed after installation are a well-known technology in the field, and the self-locking mechanism 2 and the screw 1 in this scheme are also screws that cannot be removed after installation, which are used to fix the relevant components in the corresponding installation place very firmly and reliably.

[0033] In one embodiment, the insertion rod 13 is a magnet rod, and the insertion rod 13 can be magnetically matched with the connecting rod 24.

[0034] With this design, when the fixing state between the self-locking mechanism 2 and the mounting groove is released, the screw rod 1 can be moved close to the self-locking mechanism 2, and the insertion rod 13 can be moved close to the connecting rod 24, so that the self-locking mechanism 2 can be sucked out of the mounting groove by magnetic attraction, so that the screw can be easily disassembled when it needs to be removed.

[0035] In one embodiment, the surface of the locking piece 27 has anti-slip textures. This design can make the locking piece 27 more stable when in contact with the inner wall of the installation groove.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0038] In addition, "plurality" means two or more.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A locking screw with a self-locking structure, characterized in that: include, A screw rod (1) having a T-shaped appearance, the screw rod (1) comprising a rod body (11) having a thread, a thread groove (12) provided at the bottom of the rod body (11) and recessed inwardly, and an insertion rod (13) vertically arranged in the corresponding thread groove (12) of the rod body (11); The self-locking mechanism (2) comprises a sleeve (21) threadedly matched with a thread groove (12) corresponding to a rod body (11); a connecting rod (24) is telescopically and slidably arranged inside the sleeve (21); a plurality of locking plates (27) are rotatably arranged on a side of the connecting rod (24) away from the screw rod (1); a plurality of through openings (28) corresponding to the locking plates (27) are opened on the side wall of the sleeve (21); when the insertion rod (13) is inserted into the sleeve (21) and pushes the connecting rod (24) to move to a side away from the rod body (11), each of the locking plates (27) is driven to rotate and pass through the through openings (28).

2. The locking screw with a self-locking structure according to claim 1, characterized in that: The lateral end of the rod body (11) away from the thread groove (12) has a tool interface.

3. The locking screw with a self-locking structure according to claim 1, characterized in that: The self-locking mechanism (2) further comprises a cavity (22) which is opened inside the sleeve (21) and is distributed up and down. An adjusting cavity (23) which is located between the upper and lower cavities (22) and is connected to each other is opened inside the self-locking mechanism (2). The top and bottom ends of the connecting rod (24) are respectively located in the two cavities (22). A limiting plate (25) located in the adjusting cavity (23) is arranged on the connecting rod (24). A spring (26) is arranged on the limiting plate (25). The other side of the spring (26) contacts the inner wall of the cavity (22) at the corresponding adjusting cavity (23).

4. The locking screw with a self-locking structure according to claim 1, characterized in that: The self-locking mechanism (2) further comprises a guide piece (29) arranged on the inner bottom wall of the sleeve (21), the top surface of the guide piece (29) being in the shape of an arc, and when the connecting rod (24) moves to a side away from the rod body (11), the locking piece (27) contacts the top surface of the guide piece (29), rotates with the change of the arc, and passes through the through-hole (28).

5. The locking screw with a self-locking structure according to claim 3, characterized in that: A ratchet (3) is arranged in the corresponding cavity (22) on the upper side of the sleeve (21); a ratchet pawl cooperating with the ratchet (3) is rotatably arranged on the inner wall of the sleeve (21); a rectangular lock hole is opened at the center of the ratchet (3); the insertion rod (13) is rectangular in shape and fits the lock hole; when the rod (11) is rotated and installed on the sleeve (21), the insertion rod (13) rotates and passes through the lock hole.

6. The locking screw with a self-locking structure according to claim 1, characterized in that: The insertion rod (13) is a magnet rod, and the insertion rod (13) can be magnetically matched with the connecting rod (24).

7. The locking screw with a self-locking structure according to claim 1, characterized in that: The surface of the locking piece (27) has anti-slip textures.

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