Internal expansion wire taking device

Abstract

The utility model discloses an internal expansion wire taking device which comprises a shell, a sliding groove is formed in the middle of the shell, the shell is divided into a lower end and an upper end by the sliding groove, and an expansion piece is installed in the sliding groove. A through hole is formed in the upper end in a penetrating mode, a hexagonal groove is formed in the lower end in a penetrating mode, a long bolt is inserted into the through hole, a hexagonal sleeve is installed in the hexagonal groove, the long bolt penetrates through the expansion piece to be meshed in the hexagonal sleeve, the long bolt is rotated, the hexagonal sleeve can extrude and act on one face of the first expansion block, and at the moment, pressure acts. The first expansion block and the second expansion block are staggered in parallel along the diagonal plane, the first expansion block and the second expansion block expand outwards and extrude the inner wall of a workpiece, the overall structure is light and handy, carrying is convenient, using and mounting are convenient, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of wire taking device, concretely relates to an internal expansion wire taking device. BACKGROUND

[0002] The internal expansion wire taking device is mainly used for disassembling the internal expansion screw fixed in the wall or other materials. The screw is usually expanded in the hole by rotating the internal hexagonal bolt to achieve fastening. Or when the screw in the workpiece is damaged, the internal expansion wire taking device can also be used to take out the workpiece under stress.

[0003] According to the application number: 202020644107.0, the internal expansion screw taking device is disclosed, which comprises a wire taking device, a rod, a bottom end of the rod is detachably connected with the wire taking device, a fixed plate is detachably arranged at the top end of the rod, a sliding block is further arranged on the rod, a through hole is arranged on the sliding block and the rod is located in the through hole, the inner diameter of the through hole is smaller than the outer diameter of the wire taking device, the sliding block can slide up and down along the length direction of the rod, the sliding block is located between the fixed plate and the wire taking device, after the wire taking device is connected with the expansion screw, the sliding block is manually slid upward for multiple times, the fixed plate is contacted with the sliding block for multiple times and is upwardly hit by the sliding block for multiple times to move upward, and the expansion screw is taken out with the fixed plate moving upward. The utility model aims to provide an internal expansion screw taking device which can quickly pull out the expansion screw.

[0004] In the above-mentioned scheme, the overall structure is relatively complex, the structure is not compact, and it cannot be conveniently carried and used during use. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide an internal expansion wire taking device to solve the portable use problem in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] An internal expansion wire taking device comprises a shell, a sliding groove is formed in the middle of the shell, the sliding groove divides the shell into a lower end and an upper end, and an expansion piece is installed in the sliding groove.

[0008] Further, a through hole is penetrated in the upper end, a hexagonal groove is penetrated in the lower end, a long bolt is inserted into the through hole, a hexagonal sleeve is installed in the hexagonal groove, and the long bolt is engaged in the hexagonal sleeve through the expansion piece.

[0009] Further, the shell is in a cylindrical structure. The cylindrical shell can adapt to the cavities inside various workpieces, facilitate the insertion of the shell into the inside of the workpiece cavity, and improve the installation efficiency.

[0010] Further, the upper end outer wall is symmetrically provided with a cut surface. When the expansion of the expansion member causes the shell to be fixedly clamped in the cavity of the workpiece, the shell can be clamped on the cut surface by using a vice or a tool clamp. The cut surface can facilitate the clamping of the shell by the external clamping tool. The shell is pulled by force, and the workpiece clamped by the shell is synchronously taken out.

[0011] Further, the expansion member comprises a bevel surface. An oval slot is formed through the expansion member. The expansion member is cut along the bevel surface to form a first expansion block and a second expansion block.

[0012] Further, the first expansion block and the second expansion block are combined to form a rectangle. The thickness and length of the rectangle are matched with the sliding groove.

[0013] Further, the length of the hexagonal sleeve is greater than the maximum displacement expansion stroke of the expansion member. The hexagonal sleeve with sufficient length can always keep a part of the hexagonal sleeve in the hexagonal groove no matter how the long bolt is rotated.

[0014] Further, the side surface of the first expansion block and the second expansion block is provided with an anti-skid pattern. The anti-skid pattern on the first expansion block and the second expansion block can improve the contact friction between the expansion member and the inner wall of the workpiece to avoid slipping.

[0015] Further, the surface of the cut surface is also provided with an anti-skid pattern. The anti-skid pattern on the surface of the cut surface can improve the contact friction between the clamping tool and the cut surface to avoid slipping.

[0016] The technical scheme of the utility model has the following beneficial effects:

[0017] 1. Rotate the long bolt, and the hexagonal sleeve will be pressed on one side of the first expansion block. At this time, the first expansion block and the second expansion block will be parallel and staggered along the bevel surface. The first expansion block and the second expansion block will be expanded and pressed on the inner wall of the workpiece. The overall structure is light and convenient to carry. The installation is convenient, and the working efficiency is improved.

[0018] 2. Rotate the long bolt in the opposite direction, and the hexagonal sleeve will loosen the pressing on the expansion member. By pressing the first expansion block and the second expansion block, the first expansion block will push the hexagonal sleeve upward. The first expansion block and the second expansion block are combined to form a rectangle and are matched in the sliding groove. At this time, the shell fixed in the workpiece can be taken out, and the shell can be repeatedly used. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is the overall development structure diagram of the utility model.

[0022] Figure 3 It is the shell structure schematic diagram of the utility model.

[0023] Figure 4 It is the overall internal section view of the utility model.

[0024] Figure 5 It is the development section structure diagram of the utility model.

[0025] Figure 6 It is the development section structure diagram of the utility model.

[0026] Figure 7 It is the expansion piece combination plan view of the utility model.

[0027] Figure 8 It is the expansion piece combination perspective view of the utility model.

[0028] Figure 9 It is the shell use state diagram of the utility model.

[0029] The drawing mark: 10, shell;101, sliding slot;102, lower end;103, upper end;104, through hole;105, cut surface;106, hexagonal groove;20, long bolt;30, expansion piece;301, first expansion block;302, second expansion block;303, oval groove;304, bevel surface;305, anti-skid line;40, hexagonal sleeve;50, workpiece. Specific implementation

[0030] In order to make the utility model's purpose, technical scheme and advantage more clearly, the utility model will be further detailed below with the combination of drawings and examples.It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.Based on the examples in the utility model, all other examples obtained by the person skilled in the art without creative labor are within the scope of the utility model protection.

[0031] Example one:

[0032] Reference Figure 1 A kind of internal expansion wire taking device, including shell 10, sliding slot 101 is opened in shell 10, sliding slot 101 divides shell 10 into lower end 102 and upper end 103, expansion piece 30 is installed in sliding slot 101.

[0033] The upper end 103 is provided with a through hole 104, the lower end 102 is provided with a hexagonal groove 106, the long bolt 20 is inserted into the through hole 104, the hexagonal sleeve 40 is installed in the hexagonal groove 106, and the long bolt 20 is engaged in the hexagonal sleeve 40 through the expansion piece 30.

[0034] In the above scheme, the upper end 103 of the handheld shell 10 is inserted into the workpiece 50 to be taken out. Because the hexagonal sleeve 40 is in the hexagonal groove 106, the hexagonal sleeve 40 can only move up and down in the hexagonal groove 106. By tightening the long bolt 20, the hexagonal sleeve 40 gradually approaches the sliding groove 101, that is, the hexagonal sleeve 40 exerts a pressing force on the expansion piece 30.

[0035] Preferably, the shell 10 is in a cylindrical structure. The cylindrical shell 10 can adapt to the cavities in various workpieces, facilitating the insertion of the shell 10 into the cavity of the workpiece 50 and improving the installation efficiency.

[0036] Further reference Figures 1-3 The outer wall of the upper end 103 is symmetrically provided with a cut surface 105. When the shell 10 is fixedly clamped in the cavity of the workpiece 50 through the expansion of the expansion piece 30, the cut surface 105 can facilitate the clamping of the shell 10 by the external clamping tool, and the shell 10 can be pulled out by the force, thereby synchronously taking out the clamped workpiece 50.

[0037] Note that: the workpiece 50 can be installed on a wall or other product; the damaged threads in the cavity of the workpiece 50 can also be inserted and pulled out by the utility model, which is suitable for the damaged inner diameter to facilitate the force-taken-out workpiece 50.

[0038] Reference Figures 1-8 The expansion piece 30 comprises a chamfered surface 304, the expansion piece 30 is provided with an elliptical groove 303, and the expansion piece 30 is cut along the chamfered surface 304 to form a first expansion block 301 and a second expansion block 302.

[0039] In the above scheme, the long bolt 20 passes through the elliptical groove 303, and the elliptical groove 303 allows the first expansion block 301 and the second expansion block 302 to freely move within the range of the elliptical groove 303; when the long bolt 20 is rotated, the hexagonal sleeve 40 exerts a pressing force on one side of the first expansion block 301, at which time the first expansion block 301 and the second expansion block 302 are parallelly offset along the chamfered surface 304 (see Figure 5 and Figure 6 ), and the first expansion block 301 and the second expansion block 302 respectively expand outward and press in the inner wall of the workpiece 50.

[0040] Further reference Figures 6-8The first expansion block 301 and the second expansion block 302 are combined to form a rectangle, and the thickness and length of the rectangle are matched with the sliding groove 101.

[0041] In a further embodiment, when the long bolt 20 is rotated in the reverse direction, the hexagonal sleeve 40 is loosened from the extrusion of the expansion piece 30, and by pressing the first expansion block 301 and the second expansion block 302, the first expansion block 301 pushes the hexagonal sleeve 40 upwards, and the first expansion block 301 and the second expansion block 302 are combined to form a rectangle and are matched in the sliding groove 101, at this time, the shell 10 fixed in the workpiece 50 can be taken out and can be repeatedly used.

[0042] In a preferred embodiment, the length of the hexagonal sleeve 40 is greater than the maximum displacement expansion stroke of the expansion piece 30. In this way, the hexagonal sleeve 40 with sufficient length always has a part inside the hexagonal groove 106 no matter how the long bolt 20 is rotated.

[0043] Embodiment two:

[0044] Reference Figure 3 and Figure 8 The side surfaces of the first expansion block 301 and the second expansion block 302 are provided with anti-skid lines 305, and the surface of the cut surface 105 is also provided with anti-skid lines 305.

[0045] In the above-mentioned embodiment, the anti-skid lines 305 arranged on the first expansion block 301 and the second expansion block 302 can improve the contact friction between the expansion piece 30 and the inner wall of the workpiece 50 and avoid slipping.

[0046] The anti-skid lines 305 on the surface of the cut surface 105 can improve the contact friction between the clamping tool and the cut surface 105 and avoid the problem of slipping.

[0047] In the above-mentioned embodiment, the shell 10 is inserted into the workpiece 50, and the first expansion block 301 and the second expansion block 302 are expanded and extruded in the inner wall of the workpiece 50 by simply rotating the long bolt 20, so that the fixing is completed, the overall structure is light and convenient to carry, the installation is convenient, and the working efficiency is improved.

[0048] The specific implementation process of the utility model is as follows:

[0049] First, the upper end 103 of the shell 10 is held, the lower end 102 is inserted into the workpiece 50 to be taken out, the long bolt 20 is tightened, the hexagonal sleeve 40 gradually approaches the sliding groove 101, and the extrusion is applied to one side of the first expansion block 301, at this time, under the action of the pressure, the first expansion block 301 and the second expansion block 302 are parallel and staggered along the chamfered surface 304, and the first expansion block 301 and the second expansion block 302 are respectively expanded and extruded in the inner wall of the workpiece 50;

[0050] Then, the cut surface 105 is clamped by a vice or a tool clamp, the cut surface 105 is arranged to facilitate the external clamping tool to clamp the shell 10, and the shell 10 is pulled by force, so that the clamped workpiece 50 is synchronously taken out by the shell 10.

[0051] Finally, the long bolt 20 is rotated in the opposite direction, the hexagonal sleeve 40 is loosened from the extrusion of the expansion piece 30, the first expansion block 301 is pressed and the second expansion block 302 is pressed, the first expansion block 301 pushes the hexagonal sleeve 40 upwards, the first expansion block 301 and the second expansion block 302 are combined to form a rectangular fit in the sliding groove 101, and the shell 10 fixed in the workpiece 50 is taken out.

[0052] The above embodiments are only exemplary embodiments of the present application, and are not used to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications or equivalent replacements can be made to the present application within the spirit and protection scope of the present application. The modification or equivalent replacement should also be regarded as falling within the protection scope of the present application.

[0053] In the description of the present application, it should be explained that the terms "inner", "front", "rear", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only used for facilitating the description of the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, these terms indicating the orientation or positional relationship should not be understood as limiting the present application.

[0054] In the description of the present application, it should be further explained that, unless otherwise explicitly specified and limited. The terms "arrangement", "connection" should be understood in a broad sense, for example, these terms can represent the fixed connection, detachable connection or integral connection between elements; can also represent mechanical connection, electrical connection; can also represent direct connection or indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances.

Claims

1. An internal expansion wire extractor, characterized in that: Includes a housing (10), the housing (10) has a groove (101) in the middle, the groove (101) divides the housing (10) into a lower end (102) and an upper end (103), and an expansion member (30) is installed in the groove (101). The upper end (103) has a through hole (104) and the lower end (102) has a hexagonal groove (106) through it. A long bolt (20) is inserted into the through hole (104) and a hexagonal sleeve (40) is installed in the hexagonal groove (106). The long bolt (20) passes through the expansion member (30) and engages with the hexagonal sleeve (40). The expansion member (30) includes a chamfered surface (304), and an elliptical groove (303) runs through the expansion member (30). The expansion member (30) is cut along the chamfered surface (304) to form a first expansion block (301) and a second expansion block (302).

2. The internal expansion wire extractor according to claim 1, characterized in that: The shell (10) has a cylindrical structure.

3. The internal expansion wire extractor according to claim 1, characterized in that: The upper end (103) has symmetrically cut surfaces (105) on its outer wall.

4. The internal expansion wire extractor according to claim 1, characterized in that: The first expansion block (301) and the second expansion block (302) combine to form a rectangle, the thickness and length of which match the groove (101).

5. The internal expansion wire extractor according to claim 1, characterized in that: The length of the hexagonal sleeve (40) is greater than the maximum displacement expansion stroke of the expansion component (30).

6. The internal expansion wire extractor according to claim 4, characterized in that: The sides of the first expansion block (301) and the second expansion block (302) are provided with anti-slip texture (305).

7. The internal expansion wire extractor according to claim 3, characterized in that: The cut surface (105) is also provided with anti-slip texture (305).

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