Special tool for assembling and disassembling internal pentagonal anti-theft screw

Abstract

The utility model relates to the technical field of screw disassembling and assembling tools, and particularly discloses a special tool for assembling and disassembling an internal pentagonal anti-theft screw, which comprises a sleeve, five circumferentially distributed sliding grooves are formed in the lower end face of the sleeve in a penetrating manner, sliding blocks are connected to the inner walls of the five sliding grooves in a sliding manner, and inner supporting plates are fixedly connected to the lower end faces of the five sliding blocks. Short columns are fixedly connected to the upper end faces of the five sliding blocks, a rotating shaft is rotatably connected to the interior of the sleeve, a rotating disc is fixedly connected to the outer wall of the rotating shaft, five circumferentially-distributed groove holes are formed in the outer wall of the rotating disc in a penetrating mode, and the five short columns are slidably connected with the five groove holes correspondingly; the five inner supporting plates can be driven to synchronously slide inwards or outwards through cooperation of the worm, the worm gear, the rotating shaft, the rotating disc, the groove hole, the short column, the sliding block and the sliding groove, so that the size of a pentagon defined by the five inner supporting plates is adjusted, and the inner pentagonal anti-theft screw fixing device can be suitable for inner pentagonal anti-theft screws of different models and is wide in application range and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of screw disassembling tools, and particularly discloses a special tool for assembling and disassembling inner five-point anti-theft screws. Background Art

[0002] Anti-theft screws, also known as anti-disassembly screws, are fasteners designed to prevent theft of fixed facilities placed in outdoor public environments for a long time. Generally, they are divided into two types according to structure and type: removable and non-removable. The former is divided into internal pentagonal anti-theft screws, internal plum blossom anti-theft screws, Y-type anti-theft screws, external triangle anti-theft screws, internal triangle anti-theft screws, two-point anti-theft screws, eccentric hole anti-theft screws, internal multi-toothed and other structures.

[0003] The removal of the inner five-point anti-theft screw requires a special five-point wrench. The existing five-point wrench for removing the inner five-point anti-theft screw can only remove screws of fixed specifications. Different types of screws require different types of wrenches, and the use effect is not good. Therefore, a special tool for installing and removing the inner five-point anti-theft screw is needed to solve this problem. Utility Model Content

[0004] The utility model provides a special tool for assembling and disassembling inner five-point anti-theft screws, which can be used to assemble and disassemble inner five-point anti-theft screws of different models and has strong practicality.

[0005] The utility model is achieved as follows: a special tool for assembling and disassembling inner pentagonal anti-theft screws comprises a sleeve, the lower end surface of the sleeve is penetrated with five circumferentially distributed sliding grooves, the inner walls of the five sliding grooves are slidably connected with sliders, the lower end surfaces of the five sliders are fixedly connected with inner support plates, the upper end surfaces of the five sliders are fixedly connected with short columns, the interior of the sleeve is rotatably connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with a turntable, the outer wall of the turntable is penetrated with five circumferentially distributed slots, and the five short columns are slidably connected to the five slots respectively.

[0006] In order to facilitate the rotation of the turntable, as a preferred special tool for installing and removing the inner five-point anti-theft screw of the utility model, the outer wall of the rotating shaft is fixedly connected to a worm wheel, the interior of the sleeve is rotatably connected to a worm, and the worm is meshingly connected to the worm wheel.

[0007] In order to facilitate the rotation of the worm, as a preferred special tool for assembling and disassembling the inner five-point anti-theft screw of the utility model, one end of the worm extends to the outside of the sleeve and is fixedly connected with a knob.

[0008] In order to facilitate the matching of the support plate with the inner angle of the inner pentagram screw, a special tool for installing and disassembling the inner pentagram anti-theft screw of the utility model is preferably used. The inner support plate includes a first support plate and a second support plate, and the angle between the first support plate and the second support plate is 108°.

[0009] In order to prevent the slider from falling out of the slide groove, the slider is preferably T-shaped as a special tool for assembling and disassembling the inner five-point anti-theft screw of the utility model.

[0010] In order to facilitate the rotation of the sleeve, as a preferred special tool for installing and removing the inner five-point anti-theft screw of the utility model, the outer wall of the sleeve is fixedly connected to two symmetrically distributed handles.

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

[0012] The special tool for assembling and disassembling the inner pentagonal anti-theft screw can drive the five inner support plates to slide inward or outward synchronously through the cooperation of a worm, a worm wheel, a rotating shaft, a rotating disk, a slotted hole, a short column, a sliding block and a sliding groove, so as to adjust the size of the pentagon surrounded by the five inner support plates. The tool can be used for different types of inner pentagonal anti-theft screws, has a wide range of applications and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall structure diagram of the special tool for installing and removing the inner five-point anti-theft screw of the utility model;

[0014] Figure 2 It is a front sectional view of the special tool for assembling and disassembling the inner pentagonal anti-theft screw of the utility model;

[0015] Figure 3 It is a top cross-sectional view of the special tool for installing and removing the inner five-point anti-theft screw of the utility model;

[0016] Figure 4 It is a structural diagram of the slider of the utility model.

[0017] In the figure, 1, sleeve; 2, slide groove; 3, slider; 4, inner support plate; 401, first support plate; 402, second support plate; 5, short column; 6, rotating shaft; 7, turntable; 8, slot; 9, worm gear; 10, worm; 11, knob; 12, handle. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0020] See also Figure 1-4 A special tool for assembling and disassembling inner pentagonal anti-theft screws comprises a sleeve 1, the lower end surface of the sleeve 1 is penetrated with five circumferentially distributed slide grooves 2, the inner walls of the five slide grooves 2 are slidably connected with sliders 3, the lower end surfaces of the five sliders 3 are fixedly connected with inner support plates 4, the upper end surfaces of the five sliders 3 are fixedly connected with short columns 5, the interior of the sleeve 1 is rotatably connected with a rotating shaft 6, the outer wall of the rotating shaft 6 is fixedly connected with a turntable 7, the outer wall of the turntable 7 is penetrated with five circumferentially distributed slots 8, and the five short columns 5 are slidably connected with the five slots 8 respectively.

[0021] In this embodiment: the worm 10 is rotated by the knob 11, the worm 10 drives the worm wheel 9 to rotate, and then drives the rotating shaft 6 to rotate, the rotating shaft 6 further drives the turntable 7 to rotate, and then drives the five sliders 3 to slide synchronously inward or outward along the slide groove 2 through the slot 8 and the short column 5, thereby driving the five inner support plates 4 to slide synchronously inward or outward, thereby adjusting the size of the pentagon surrounded by the five inner support plates 4, so as to adapt to different types of inner pentagonal anti-theft screws, with a wide range of applications and strong practicality.

[0022] As a technical optimization solution of the utility model, the outer wall of the rotating shaft 6 is fixedly connected to a worm wheel 9, and the interior of the sleeve 1 is rotatably connected to a worm 10, and the worm 10 is meshingly connected to the worm wheel 9.

[0023] In this embodiment: the turntable 7 is driven to rotate by the worm 10 and the worm wheel 9, which can facilitate the self-locking property of the worm 10 and the worm wheel 9 to fix the turntable 7, thereby fixing the position of the inner support plate 4 and preventing the inner support plate 4 from sliding when removing and installing the screws.

[0024] As a technical optimization solution of the present invention, one end of the worm 10 extends to the outside of the sleeve 1 and is fixedly connected with a knob 11 .

[0025] In this embodiment, the worm 10 is easily rotated by extending one end of the worm 10 to the outside of the sleeve 1 and fixing the knob 11 thereto.

[0026] As a technical optimization solution of the present invention, the inner support plate 4 includes a first support plate 401 and a second support plate 402, and the angle between the first support plate 401 and the second support plate 402 is 108°.

[0027] In this embodiment, by setting the included angle between the first support plate 401 and the second support plate 402 to 108°, the inner support plate 4 can be easily matched with the inner angle of the inner five-point anti-theft screw.

[0028] As a technical optimization solution of the present invention, the slider 3 is T-shaped.

[0029] In this embodiment, the slider 3 is set to be T-shaped to prevent the slider 3 from escaping from the slide groove 2.

[0030] As a technical optimization solution of the present invention, two symmetrically distributed handles 12 are fixedly connected to the outer wall of the sleeve 1 .

[0031] In this embodiment, two symmetrically distributed handles 12 are fixedly connected to the outer wall of the sleeve 1, so as to facilitate the rotation of the sleeve 1 and thus the disassembly and installation of the screws.

[0032] The working principle and use process of the utility model are as follows: first, the five inner support plates 4 are inserted into the interior of the inner five-pointed anti-theft screw, and the sleeve 1 is rotated to align the inner support plates 4 with the inner corners of the screw, and then the worm 10 is rotated by the knob 11, and the worm 10 drives the worm wheel 9 to rotate, and then drives the rotating shaft 6 to rotate, and the rotating shaft 6 further drives the turntable 7 to rotate, and then drives the five sliders 3 to slide synchronously outward along the slide groove 2 through the slot 8 and the short column 5, thereby driving the five inner support plates 4 to slide outward, so that the five inner support plates 4 are fitted with the five inner corners of the screw, and then the inner five-pointed anti-theft screw can be twisted for disassembly and assembly by rotating the sleeve 1 through the handle 12. The utility model can adjust the size of the pentagon surrounded by the five inner support plates 4, so as to be suitable for different types of inner five-pointed anti-theft screws, with a wide range of applications and strong practicality.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A special tool for installing and removing a five-pointed internal anti-theft screw, comprising a sleeve (1), characterized in that: The lower end surface of the sleeve (1) is penetrated with five circumferentially distributed sliding grooves (2), the inner walls of the five sliding grooves (2) are slidably connected with sliders (3), the lower end surfaces of the five sliders (3) are fixedly connected with inner support plates (4), the upper end surfaces of the five sliders (3) are fixedly connected with short columns (5), the interior of the sleeve (1) is rotatably connected with a rotating shaft (6), the outer wall of the rotating shaft (6) is fixedly connected with a rotating disk (7), the outer wall of the rotating disk (7) is penetrated with five circumferentially distributed slots (8), and the five short columns (5) are slidably connected to the five slots (8) respectively.

2. The special tool for installing and removing the inner pentagram anti-theft screw according to claim 1, characterized in that: The outer wall of the rotating shaft (6) is fixedly connected to a worm wheel (9), the interior of the sleeve (1) is rotatably connected to a worm (10), and the worm (10) is meshingly connected to the worm wheel (9).

3. The special tool for installing and removing the inner pentagram anti-theft screw according to claim 2, characterized in that: One end of the worm (10) extends to the outside of the sleeve (1) and is fixedly connected to a knob (11).

4. The special tool for installing and removing the inner pentagram anti-theft screw according to claim 1, characterized in that: The inner support plate (4) comprises a first support plate (401) and a second support plate (402), and the included angle between the first support plate (401) and the second support plate (402) is 108°.

5. The special tool for installing and removing the inner pentagram anti-theft screw according to claim 1, characterized in that: The sliding block (3) is T-shaped.

6. The special tool for installing and removing the inner pentagram anti-theft screw according to claim 1, characterized in that: Two symmetrically distributed handles (12) are fixedly connected to the outer wall of the sleeve (1).

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