Sectional type self-adaptive screw

Abstract

The utility model relates to the technical field of fasteners, and discloses a sectional type self-adaptive screw which comprises a screw rod and a head portion, a through groove is formed in the bottom of the head portion, the through groove is communicated with a positioning cavity formed in the inner wall of the head portion, and a locking assembly is installed between a connecting column and the head portion. The locking assembly is arranged, in the later unlocking operation process, an operator can press the unlocking block, and the unlocking block and the synchronous plate drive the clamping block to move, so that the clamping block is separated from the inner wall of the positioning cavity, unlocking operation is completed, the head can be replaced conveniently in the later period, it is guaranteed that the head can adapt to a corresponding tool, and the working efficiency is improved. And after unlocking is completed, an operator needs to rotate the head at the moment, finally, the extrusion cover corresponds to the notch in the head, and then the disassembling operation can be completed, the situation that the screw and the head are separated due to the fact that the unlocking block is touched by mistake can be reduced, the purpose of preventing mistaken touch is achieved, and the practicability is high. And the operation is safer.

Description

Technical Field

[0001] The utility model belongs to the technical field of fasteners, and in particular relates to a segmented adaptive screw. Background Art

[0002] Screws are extremely common connecting elements in mechanical assembly, construction engineering, and many other industrial fields. Traditional one-piece screw structures, such as screw thread specifications, screw diameter, and material properties, cannot be changed after manufacturing.

[0003] Nowadays, various holes and slots are set on the screw heads. When tightening or loosening the screws, corresponding tools need to be inserted into these holes and slots. In this way, when facing different types of screws, users have to carry multiple tools of different sizes, which makes the operation process extremely cumbersome and brings great obstacles to its promotion and application.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the technical problem that various holes and slots are provided on screw heads nowadays, when tightening or loosening the screws, corresponding tools need to be inserted into these holes and slots. In this way, when facing different types of screws, users have to carry multiple tools of different sizes, which makes the operation process extremely cumbersome and brings great obstacles to its promotion and application. The basic concept of the technical solution adopted by the utility model is:

[0006] A segmented adaptive screw comprises a screw rod and a head.

[0007] A through slot is provided at the bottom of the head, the through slot is communicated with a positioning cavity provided on the inner wall of the head, and three notches are evenly provided on the outer edge of the through slot. A connecting post is installed on the screw, and the connecting post is inserted into the interior of the head along the through slot, and a locking assembly is installed between the connecting post and the head;

[0008] The locking assembly includes three pairs of extrusion covers, which are evenly installed on the side walls of the connecting column and placed in the positioning cavity. An extrusion rod is slidably arranged inside the extrusion cover, and an extrusion spring is installed between the extrusion rod and the extrusion cover. A card block is installed on the top of the extrusion rod, and the card block is movably connected to the top of the positioning cavity, and the connecting position corresponds to the notch position in an alternating manner. A synchronization plate is installed on the side wall of the extrusion rod, and an unlocking block is installed on the synchronization plate. The unlocking block movably passes through the head.

[0009] As a preferred embodiment of the present invention, a blocking plate is installed on the connecting column, the blocking plate is in contact with the bottom of the head, the diameter of the blocking plate is larger than the diameter of the through slot, the bottom of the screw is chamfered, and the cross-section of the head is hexagonal.

[0010] As a preferred embodiment of the present invention, three fixing plates are evenly installed on the side walls of the connecting column located inside the positioning cavity, each pair of the fixing plates is interconnected with the corresponding bottom of the extrusion cover, and the side walls of the fixing plates are installed with clips, and the length of the clips is adapted to the height of the positioning cavity.

[0011] As a preferred embodiment of the present invention, three blocking blocks are evenly installed inside the positioning cavity, each blocking block is arranged between two adjacent notches, and an extrusion cover is provided in the gap between each adjacent blocking block.

[0012] As a preferred embodiment of the present invention, a baffle is slidingly arranged inside the extrusion hood, the top of the baffle is connected to the extrusion rod, and an extrusion spring is installed between the bottom of the baffle and the extrusion hood, and the compression direction of the extrusion spring and the moving direction of the extrusion rod are on the same straight line.

[0013] As a preferred embodiment of the present invention, a countersunk groove is provided on the top of the connecting column, the unlocking block and the synchronization plate are slidably arranged in the countersunk groove, and a limiting rod is installed at the bottom of the unlocking block, and the limiting rod is slidably connected to the limiting groove provided on the countersunk groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model is provided with a locking assembly, wherein during the later unlocking operation, the operator can press the unlocking block, and the unlocking block and the synchronization plate drive the card block to move, thereby separating the card block from the inner wall of the positioning cavity, completing the unlocking operation, facilitating the later replacement of the head, ensuring that the replaced head can adapt to the corresponding tool, making the later disassembly easier, and after the unlocking is completed, the operator also needs to rotate the head, finally making the extrusion cover and the notch on the head correspond to each other, and then the disassembly operation can be completed. This method can reduce the situation where the screw and the head are separated due to accidental touching of the unlocking block, thereby achieving the purpose of preventing accidental touching and making the operation safer.

[0016] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the attached figure:

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the front structure of the utility model;

[0020] Figure 3 This is a partial cross-sectional view of the utility model Figure 1 ;

[0021] Figure 4 This is a partial cross-sectional view of the utility model Figure 2 ;

[0022] Figure 5 This is a structural diagram of the present invention after the head position is translated;

[0023] Figure 6 This is a cross-sectional view of the head portion of the present invention.

[0024] In the figure: 1. screw; 2. head; 3. connecting column; 4. blocking plate; 5. fixing plate; 6. clamping plate; 7. extrusion cover; 8. extrusion rod; 9. baffle; 10. extrusion spring; 11. clamping block; 12. synchronization plate; 13. unlocking block; 14. limiting rod; 15. limiting groove; 16. countersunk groove; 17. positioning cavity; 18. through groove; 19. notch; 20. blocking block. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0026] like Figures 1 to 6 As shown, a segmented adaptive screw includes a screw rod 1 and a head 2.

[0027] A through slot 18 is formed at the bottom of the head 2, which is connected to a positioning cavity 17 formed on the inner wall of the head 2. Three notches 19 are evenly formed on the outer edge of the through slot 18. A connecting post 3 is mounted on the screw 1. The connecting post 3 is inserted into the head 2 along the through slot 18, and a locking assembly is installed between the connecting post 3 and the head 2.

[0028] The locking assembly includes three pairs of extrusion covers 7, which are evenly installed on the side walls of the connecting column 3, and the extrusion covers 7 are placed in the positioning cavity 17. An extrusion rod 8 is slidingly arranged inside the extrusion cover 7, and an extrusion spring 10 is installed between the extrusion rod 8 and the extrusion cover 7. A card block 11 is installed on the top of the extrusion rod 8, and the card block 11 is movably connected to the top of the positioning cavity 17, and the connecting position corresponds to the position of the notch 19 in an staggered manner. A synchronization plate 12 is installed on the side wall of the extrusion rod 8, and an unlocking block 13 is installed on the synchronization plate 12. The unlocking block 13 movably passes through the head 2. During the later unlocking operation, the operator can press the unlocking block 13, and the unlocking block 13 and the synchronization plate 12 drive the card block 11 to move, thereby separating the card block 11 and the inner wall of the positioning cavity 17, completing the unlocking operation, and facilitating the later replacement of the head 2, ensuring that the replaced head 2 can adapt to the corresponding tool, making the later disassembly easier, and after the unlocking is completed, the operator also needs to rotate the head 2, and finally make the extrusion cover 7 and the notch 19 on the head 2 correspond to each other, and then the disassembly operation can be completed. This method can reduce the occurrence of separation between the screw and the head due to accidental touching of the unlocking block 13, thereby preventing accidental touching and making the operation safer.

[0029] like Figures 1 to 6 As shown, in a specific embodiment, a blocking plate 4 is installed on the connecting column 3, and the blocking plate 4 fits with the bottom of the head 2. The diameter of the blocking plate 4 is larger than the diameter of the through groove 18. The bottom of the screw 1 is chamfered, and the cross-section of the head 2 is hexagonal. The blocking plate 4 can position the insertion depth of the connecting column 3, and after the head 2 accidentally falls off, the blocking plate 4 is also in contact with the object, and can also serve the purpose of locking.

[0030] like Figures 1 to 6 As shown, further, three fixing plates 5 are evenly installed on the side walls of the connecting column 3 located inside the positioning cavity 17, and each pair of fixing plates 5 is interconnected with the bottom of the corresponding extrusion cover 7. A clamping plate 6 is installed on the side wall of the fixing plate 5, and the length of the clamping plate 6 is adapted to the height of the positioning cavity 17. The clamping plate 6 slides inside the positioning cavity 17 to ensure that the vertical position of the fixing plate 5 inside the positioning cavity 17 is unchanged at this time, thereby achieving a positioning effect.

[0031] like Figures 1 to 6 As shown, further, three blocking blocks 20 are evenly installed inside the positioning cavity 17, each blocking block 20 is arranged between two adjacent notches 19, and an extrusion cover 7 is provided in the gap between each adjacent blocking block 20. The blocking block 20 can ensure that the extrusion cover 7 can only rotate within a certain angle, so that the extrusion cover 7 can slide out from between the corresponding notches 19 at a later time.

[0032] like Figures 1 to 6As shown, a baffle 9 is slidably provided inside the extrusion cover 7. The top of the baffle 9 is connected to the extrusion rod 8. An extrusion spring 10 is installed between the bottom of the baffle 9 and the extrusion cover 7. The compression direction of the extrusion spring 10 and the movement direction of the extrusion rod 8 are in the same straight line. When the extrusion rod 8 moves downward, the extrusion rod 8 drives the baffle 9 at the bottom to slide downward along the extrusion cover 7. At this time, the extrusion spring 10 inside the extrusion cover 7 is compressed, and the extrusion spring 10 facilitates the subsequent reset operation.

[0033] like Figures 1 to 6 As shown, further, a countersunk groove 16 is formed at the top of the connecting column 3, and the unlocking block 13 and the synchronizing plate 12 are slidably arranged in the countersunk groove 16. A limiting rod 14 is installed at the bottom of the unlocking block 13, and the limiting rod 14 is slidably connected to the limiting groove 15 formed on the countersunk groove 16. When the head 2 needs to be replaced, the operator can press the unlocking block 13, and the unlocking block 13 will slide inside the countersunk groove 16, and the limiting rod 14 at the bottom of the unlocking block 13 can be inserted into the limiting groove 15. The limiting rod 14 and the limiting groove 15 serve the purpose of limiting guidance.

[0034] The implementation principle of a segmented adaptive screw in this embodiment is as follows:

[0035] During normal use, the operator only needs to rotate the head 2, at which time the head 2 drives the screw 1 to rotate through the locking assembly, and then the screw 1 can be screwed into a specified position.

[0036] When the head 2 needs to be replaced, the operator can press the unlocking block 13. At this time, the unlocking block 13 slides inside the countersunk groove 16, and the limiting rod 14 at the bottom of the unlocking block 13 can be inserted into the limiting groove 15. The limiting rod 14 and the limiting groove 15 serve as a limiting guide. When the unlocking block 13 moves downward, the unlocking block 13 drives the side wall synchronous plate 12 to move downward, and the extrusion rod 8 at the end of the synchronous plate 12 moves downward, and then the block 11 at the top of the extrusion rod 8 can be separated from the positioning cavity 17. Finally, the head 2 with the positioning cavity 17 is separated from the block 11 on the connecting column 3, completing the unlocking operation. When the extrusion rod 8 moves downward, the extrusion rod 8 drives the bottom baffle 9 to slide downward along the extrusion cover 7. At this time, the extrusion spring 10 inside the extrusion cover 7 is compressed, and the extrusion spring 10 facilitates the subsequent reset operation. After unlocking, the operator needs to rotate the head 2, which will cause the notch 19 at the bottom to change position. When the notch 19 is aligned with the extrusion cover 7, the head 2 is moved vertically, completing the disassembly operation. When a new head 2 needs to be installed, the above method can be reversed.

Claims

1. A segmented adaptive screw, comprising a screw (1) and a head (2), characterized in that: A through slot (18) is provided at the bottom of the head (2), the through slot (18) and the positioning cavity (17) provided on the inner wall of the head (2) are communicated with each other, and three notches (19) are evenly provided at the outer edge of the through slot (18), a connecting column (3) is installed on the screw (1), the connecting column (3) is inserted into the inside of the head (2) along the through slot (18), and a locking assembly is installed between the connecting column (3) and the head (2); The locking assembly includes three pairs of extrusion covers (7), which are evenly installed on the side walls of the connecting column (3), and the extrusion covers (7) are placed in the positioning cavity (17). An extrusion rod (8) is slidably provided inside the extrusion cover (7), and an extrusion spring (10) is installed between the extrusion rod (8) and the extrusion cover (7). A clamping block (11) is installed on the top of the extrusion rod (8), and the clamping block (11) is movably clamped on the top of the positioning cavity (17), and the clamping position corresponds to the position of the notch (19) in an alternating manner. A synchronization plate (12) is installed on the side wall of the extrusion rod (8), and an unlocking block (13) is installed on the synchronization plate (12). The unlocking block (13) movably passes through the head (2).

2. A segmented adaptive screw according to claim 1, characterized in that: A blocking plate (4) is mounted on the connecting column (3), the blocking plate (4) and the bottom of the head (2) are fitted together, the diameter of the blocking plate (4) is larger than the diameter of the through slot (18), the bottom of the screw (1) is chamfered, and the cross section of the head (2) is hexagonal.

3. The segmented adaptive screw according to claim 1, characterized in that: Three fixing plates (5) are evenly installed on the side walls of the connecting column (3) located inside the positioning cavity (17), and each pair of the fixing plates (5) is interconnected with the bottom of the corresponding extrusion cover (7). A clamping plate (6) is installed on the side walls of the fixing plates (5), and the length of the clamping plate (6) is adapted to the height of the positioning cavity (17).

4. The segmented adaptive screw according to claim 1, characterized in that: Three blocking blocks (20) are evenly installed inside the positioning cavity (17), each blocking block (20) is arranged between two adjacent notches (19), and an extrusion cover (7) is provided in the gap between each adjacent blocking block (20).

5. The segmented adaptive screw according to claim 1, characterized in that: A baffle (9) is slidably provided inside the extrusion cover (7), the top of the baffle (9) is connected to the extrusion rod (8), and an extrusion spring (10) is installed between the bottom of the baffle (9) and the extrusion cover (7), and the compression direction of the extrusion spring (10) and the moving direction of the extrusion rod (8) are on the same straight line.

6. The segmented adaptive screw according to claim 1, characterized in that: A countersunk groove (16) is provided on the top of the connecting column (3), the unlocking block (13) and the synchronization plate (12) are slidably arranged in the countersunk groove (16), and a limiting rod (14) is installed on the bottom of the unlocking block (13), and the limiting rod (14) is slidably connected to the limiting groove (15) provided on the countersunk groove (16).

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