Disassembling and assembling tool for slipped screw

Abstract

The disassembling and assembling tool comprises a rod core, a disassembling and assembling assembly is arranged on the outer wall of the rod core and comprises a sliding pin, four supports are fixedly connected to the outer surface of the upper side of the sliding pin in an equal-angle annular array mode, connecting rods are rotationally connected to the inner walls of the four supports, and opening and closing rods are rotationally connected to the inner walls of the sides, away from the supports, of the connecting rods. Sharp edges are fixedly connected to the outer surface of the upper side of the opening and closing rod, screwdriver blades are arranged in the centers of the four sharp edges, a locking sleeve is arranged on the outer surface of the lower side of the sliding pin, and the locking sleeve moves upwards and pushes the sliding pin by disassembling and assembling the assembly and rotating the locking sleeve, so that the opening and closing rod rotates towards the inner side along the rotating center. And at the moment, the sharp edges approach inwards to clamp the head of the screw out of the pit and clamp the head of the screw, the whole dismounting and mounting tool is rotated, and the slipped screw is dismounted or mounted, by means of the structure, the screw is clamped, a user can dismount and mount the slipped screw conveniently, the utilization rate of the screw is increased, and the dismounting and mounting difficulty of the screw is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of screw disassembly and assembly tools. More specifically, the utility model relates to a disassembly and assembly tool for stripped screws. Background Technique

[0002] Screws are commonly used locking parts in daily life. Screws are also called bolts and are often used in the assembly of electronic devices, toys and other objects. A screw consists of a screw rod and a screw head. The screw rod has threads, and the screw head generally has a cross-shaped notch, a straight-shaped notch, an internal hexagonal notch, etc. The traditional method of disassembling and assembling screws is generally to use a screwdriver corresponding to the notch to disassemble and assemble the screw. The screwdriver consists of a screwdriver rod and a handle. Align the screwdriver with the notch of the screw and twist the screwdriver to complete the disassembly and assembly of the screw. However, during use, due to factors such as the incorrect model of the screwdriver used, after the notch of the screw is worn, the screwdriver and the notch of the screw cannot be tightly fitted. At this time, when twisting the screwdriver, the torque cannot be transmitted to the screw, and the screw may become stripped. When the screw is stripped, the traditional screwdriver cannot tighten or disassemble the screw, which brings inconvenience to the user. To solve the deficiencies of the prior art, we propose a disassembly and assembly tool for stripped screws. Content of the Utility Model

[0003] In order to overcome the above-mentioned defects of the prior art, the utility model provides a disassembly and assembly tool for stripped screws to solve the problem that the torque cannot be transmitted to the screw when twisting the screwdriver, at which time the screw may become stripped, and when the screw is stripped, the traditional screwdriver cannot tighten or disassemble the screw.

[0004] To solve the above technical problems, the utility model provides the following technical solution: A disassembly and assembly tool for stripped screws, including a rod core, an outer wall of the rod core is provided with a disassembly and assembly component, and a protection component is arranged below the disassembly and assembly component;

[0005] The disassembly and assembly component includes a sliding pin, an outer surface of an upper side of the sliding pin is fixedly connected with four brackets in an equiangular annular array, inner walls of the four brackets are rotatably connected with connecting rods, an inner wall of a side of the connecting rod away from the bracket is rotatably connected with an opening and closing rod, an outer surface of an upper side of the opening and closing rod is fixedly connected with a cutting edge, a screwdriver head is arranged in a center of the four cutting edges, and an outer surface of a lower side of the sliding pin is provided with a locking sleeve.

[0006] Wherein, an inner wall of the sliding pin is movably sleeved on an outer wall of the rod core, an outer surface of a lower side of the opening and closing rod is rotatably connected to an inner wall of the rod core, an outer surface of a lower side of the screwdriver head is fixedly connected to an upper side outer surface of the rod core, and an inner wall of the locking sleeve is in threaded connection with the outer wall of the rod core.

[0007] Among them, the protection component includes a protective sleeve, a sliding sleeve is detachably installed on the inner wall of the protective sleeve, a sealing cover is threadedly connected to the lower inner wall of the sliding sleeve, a protective pin is fixedly installed on the outer surface of one side of the sealing cover, an inner pin is movably connected to the inner wall of the sliding sleeve, the outer wall of the inner pin is threadedly connected to a limiting block, and a through hole is opened on the outer wall of the sliding sleeve.

[0008] Wherein, the inner wall of the inner pin is fixedly connected to the outer wall of the rod core, and the limit block is slidably connected to the outer wall of the through hole.

[0009] The side of the sharp blade close to the screwdriver head is a sharp blade edge, the screwdriver head is magnetic, and the outer wall of the locking sleeve is provided with a plurality of grooves.

[0010] Among them, thread grooves are provided on the inner walls on both sides of the sliding sleeve, the lower inner side of the inner pin is a solid structure, the top outer surface of the protective pin is in contact with the bottom outer surface of the inner pin, the inner wall diameter of the protective pin is equal to the outer wall diameter of the screwdriver head, and the protective pin is tough.

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

[0012] The utility model discloses a disassembling and assembling tool, comprising a sliding pin, a screwdriver head is aligned with the screw to be disassembled, and the locking sleeve is rotated. Since the inner wall of the locking sleeve is threadedly connected with the outer wall of the rod core, the locking sleeve moves upward and pushes the sliding pin. Since the upper outer surface of the sliding pin is fixedly connected with four brackets in an equiangular annular array, the inner walls of the four brackets are all rotatably connected with connecting rods, and the inner wall of the connecting rod is rotatably connected with the opening and closing rod on the side away from the bracket. At this time, the opening and closing rod will rotate inwardly along the rotation center. Since the upper outer surface of the opening and closing rod is fixedly connected with a sharp blade, a side of the sharp blade close to the screwdriver head is a sharp blade, so that the sharp blade is brought inwardly and clamps the head of the screw out of the pit. At this time, the sharp blade clamps the screw head, and the whole disassembling and assembling tool is rotated to disassemble or install the stripped screw. By utilizing the above structure, the locking sleeve is rotated to clamp the screw, so that the torque can be transmitted to the screw, which is convenient for the user to disassemble and install the stripped screw, increases the utilization rate of the screw, and reduces the difficulty of disassembling and assembling the screw.

[0013] The utility model relates to a protection component, including a protective sleeve. After the work of disassembling and assembling screws is completed, rotate the sealing cover to remove it from the inner wall of the lower side of the sliding sleeve, and slide the sliding sleeve upward. Since the inner wall of the sliding sleeve is movably sleeved with an inner pin, the outer wall of the inner pin is threadedly connected with a limiting block, and a through hole is provided on the outer wall of the sliding sleeve. At this time, the sliding sleeve slides upward to the topmost position, rotate the sealing cover and install it on the inner wall of the upper side of the sliding sleeve. At this time, the protective pin sleeves the screwdriver head inside, avoiding the rigid contact between the sharp blade and the screwdriver head. With the above structure, through the sliding sleeve, the protection of the screwdriver head and the sharp blade is realized, the wear of parts is reduced, the convenience of the tool is increased, and the anti-drop performance of the tool is improved. Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the disassembly and assembly component structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the protection component structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the disassembled structure of the protection component of the utility model.

[0018] [Reference Numerals]

[0019] 1. Rod core; 2. Disassembly and assembly component; 3. Protection component; 21. Slide pin; 22. Bracket; 23. Link rod; 24. Opening and closing rod; 25. Sharp blade; 26. Screwdriver head; 27. Locking sleeve; 31. Protective sleeve; 32. Sliding sleeve; 33. Sealing cover; 34. Protective pin; 35. Inner pin; 36. Limiting block; 37. Through hole. Detailed Description of the Embodiment

[0020] To make the technical problems, technical solutions and advantages to be solved by the utility model clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] As shown in the attached Figure 1 to the attached Figure 4 An embodiment of the utility model provides a disassembly and assembly tool for stripped screws, including a rod core 1, an outer wall of the rod core 1 is provided with a disassembly and assembly component 2, and a protection component 3 is arranged below the disassembly and assembly component 2;

[0022] The disassembly and assembly component 2 includes a sliding pin 21. Four brackets 22 are fixedly connected to the outer surface of the upper side of the sliding pin 21 at equal angles in a circular array. The inner walls of the four brackets 22 are all rotatably connected to a connecting rod 23. The inner wall of one side of the connecting rod 23 away from the bracket 22 is rotatably connected to an opening and closing rod 24. A sharp blade 25 is fixedly connected to the outer surface of the upper side of the opening and closing rod 24. A screwdriver bit 26 is provided at the center of the four sharp blades 25. A locking sleeve 27 is provided on the outer surface of the lower side of the sliding pin 21.

[0023] Among them, the inner wall of the sliding pin 21 is movably sleeved on the outer wall of the rod core 1. The outer surface of the lower side of the opening and closing rod 24 is rotatably connected to the inner wall of the rod core 1. The outer surface of the lower side of the screwdriver bit 26 is fixedly connected to the outer surface of the upper side of the rod core 1. The inner wall of the locking sleeve 27 is threadedly connected to the outer wall of the rod core 1;

[0024] By rotating the locking sleeve 27, since the locking sleeve 27 is provided on the outer surface of the lower side of the sliding pin 21, the sliding pin 21 slides upward. Since the inner walls of the four brackets 22 are all rotatably connected to the connecting rod 23, and the inner wall of one side of the connecting rod 23 away from the bracket 22 is rotatably connected to the opening and closing rod 24, at this time the opening and closing rod 24 will rotate and drive the sharp blades 25 to move closer to the center.

[0025] Among them, the protection component 3 includes a protective sleeve 31. A sliding sleeve 32 is detachably installed on the inner wall of the protective sleeve 31. A sealing cover 33 is threadedly connected to the inner wall of the lower side of the sliding sleeve 32. A protective pin 34 is fixedly installed on the outer surface of one side of the sealing cover 33. An inner pin 35 is movably sleeved on the inner wall of the sliding sleeve 32. A limiting block 36 is threadedly connected to the outer wall of the inner pin 35. A through hole 37 is provided on the outer wall of the sliding sleeve 32;

[0026] Through the protective sleeve 31, when holding the disassembly and assembly tool, it prevents the user from touching the internal notch part and feeling uncomfortable, and at the same time protects the internal parts. Since the limiting block 36 is threadedly connected to the outer wall of the inner pin 35 and the through hole 37 is provided on the outer wall of the sliding sleeve 32, at this time the sliding sleeve 32 is restricted within a certain range of movement.

[0027] Among them, the inner wall of the inner pin 35 is fixedly connected to the outer wall of the rod core 1. The limiting block 36 is slidably connected to the outer wall of the through hole 37.

[0028] Among them, one side of the sharp blade 25 close to the screwdriver bit 26 is a sharp cutting edge. The screwdriver bit 26 has magnetism. A plurality of grooves are provided on the outer wall of the locking sleeve 27;

[0029] By one side of the sharp blade 25 close to the screwdriver bit 26 being a sharp cutting edge, when disassembling and assembling a screw, the sharp cutting edge clamps out a pit on the head of the screw, and can tightly hold the head of the screw when rotating the screw. Since the screwdriver bit 26 has magnetism, it can prevent the screw from falling during disassembly and assembly. Since a plurality of grooves are provided on the outer wall of the locking sleeve 27, it can provide friction when rotating the locking sleeve 27.

[0030] The inner walls of both sides of the sliding sleeve 32 are provided with thread grooves, the lower inner part of the inner pin 35 is a solid structure, the top outer surface of the protection pin 34 is in contact with the bottom outer surface of the inner pin 35, the inner wall diameter of the protection pin 34 is equal to the outer wall diameter of the screwdriver head 26, and the protection pin 34 has toughness;

[0031] The inner walls of both sides of the sliding sleeve 32 are provided with threaded grooves, and the sealing cover 33 can be installed on both sides of the sliding sleeve 32. Since the inner wall diameter of the protection pin 34 is equal to the outer wall diameter of the screwdriver head 26, the protection pin 34 is tough. When the sealing cover 33 is installed on the upper inner wall of the sliding sleeve 32, the protection pin 34 covers the screwdriver head 26 and protects it inside.

[0032] The working process of the utility model is as follows:

[0033] First, align the screwdriver head 26 with the screw to be removed and rotate the locking sleeve 27. Since the inner wall of the locking sleeve 27 is threadedly connected to the outer wall of the rod core 1, the locking sleeve 27 moves upward and pushes the sliding pin 21. Since the upper outer surface of the sliding pin 21 is fixedly connected with four brackets 22 in an equiangular circular array, the inner walls of the four brackets 22 are rotatably connected with connecting rods 23, and the inner wall of the connecting rod 23 away from the bracket 22 is rotatably connected with the opening and closing rod 24. At this time, the opening and closing rod 24 will rotate inward along the rotation center. Since the upper outer surface of the opening and closing rod 24 is fixedly connected with a sharp blade 25, the side of the sharp blade 25 close to the screwdriver head 26 is a sharp blade, so that the sharp blade 25 moves inward and clamps the head of the screw out of the pit. At this time The sharp blade 25 clamps the screw head, and the entire disassembly and assembly tool is rotated to achieve the disassembly or installation of the stripped screw. When the screw disassembly and assembly work is completed, the sealing cover 33 is rotated to remove it from the inner wall of the lower side of the sliding sleeve 32, and the sliding sleeve 32 is slid upward. Since the inner wall of the sliding sleeve 32 is movably sleeved with an inner pin 35, the outer wall of the inner pin 35 is threadedly connected to the limiting block 36, and the outer wall of the sliding sleeve 32 is provided with a through hole 37, the sliding sleeve 32 slides upward until the limiting block 36 contacts the top of the through hole 37, and the sealing cover 33 is rotated to install it on the inner wall of the upper side of the sliding sleeve 32. At this time, the protective pin 34 sleeves the screwdriver head 26 inside. Since the protective pin 34 has toughness, the rigid contact between the sharp blade 25 and the screwdriver head 26 is avoided.

[0034] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0035] Secondly: In the accompanying drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference may be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0036] Finally: The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A disassembly and assembly tool for a stripped screw, comprising a rod core (1), characterized in that, An outer wall of the rod core (1) is provided with a disassembly and assembly component (2), and a protection component (3) is arranged below the disassembly and assembly component (2); The disassembly and assembly component (2) includes a sliding pin (21). Four brackets (22) are fixedly connected to an outer surface of an upper side of the sliding pin (21) at equal angular intervals in an annular array. Inner walls of the four brackets (22) are rotatably connected to connecting rods (23). An inner wall of a side of the connecting rod (23) away from the bracket (22) is rotatably connected to an opening and closing rod (24). A cutting edge (25) is fixedly connected to an outer surface of an upper side of the opening and closing rod (24). A screwdriver bit (26) is arranged at a center of the four cutting edges (25). A locking sleeve (27) is arranged on an outer surface of a lower side of the sliding pin (21).

2. The disassembling and assembling tool for a stripped screw according to claim 1, characterized in that, An inner wall of the sliding pin (21) is movably sleeved on an outer wall of the rod core (1). A lower outer surface of the opening and closing rod (24) is rotatably connected to an inner wall of the rod core (1). A lower outer surface of the screwdriver bit (26) is fixedly connected to an upper outer surface of the rod core (1). An inner wall of the locking sleeve (27) is in threaded connection with an outer wall of the rod core (1).

3. The disassembling and assembling tool for a stripped screw according to claim 1, characterized in that, The protection component (3) includes a protective sleeve (31). A sliding sleeve (32) is detachably installed on an inner wall of the protective sleeve (31). A sealing cover (33) is in threaded connection with a lower inner wall of the sliding sleeve (32). A protection pin (34) is fixedly installed on an outer surface of a side of the sealing cover (33). An inner pin (35) is movably sleeved on an inner wall of the sliding sleeve (32). A limiting block (36) is in threaded connection with an outer wall of the inner pin (35). A through hole (37) is formed in an outer wall of the sliding sleeve (32).

4. The disassembling and assembling tool for a stripped screw according to claim 3, wherein, An inner wall of the inner pin (35) is fixedly connected to an outer wall of the rod core (1). The limiting block (36) is slidably connected to an outer wall of the through hole (37).

5. The disassembling and assembling tool for a stripped screw according to claim 1, characterized in that, A side of the cutting edge (25) close to the screwdriver bit (26) is a sharp blade edge. The screwdriver bit (26) has magnetism. A plurality of grooves are formed in an outer wall of the locking sleeve (27).

6. The disassembling and assembling tool for a stripped screw according to claim 3, wherein, Thread grooves are formed in inner walls of both sides of the sliding sleeve (32). A lower inner part of the inner pin (35) is of a solid structure. A top outer surface of the protection pin (34) is attached to a bottom outer surface of the inner pin (35). An inner diameter of the protection pin (34) is equal to an outer diameter of the screwdriver bit (26). The protection pin (34) has toughness.

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