Broken wire extractor

Abstract

The utility model provides a broken wire extractor which comprises a connecting rod, one end of the connecting rod is provided with a broken wire extracting conical head, the other end of the connecting rod is cut to form a connecting seat, the surface of the broken wire extracting conical head is provided with a plurality of spiral grooves with different tapers in the length direction of the broken wire extracting conical head, the spiral directions of the spiral grooves are the same, and the connecting seat is connected with the connecting rod. And the distances between every two adjacent spiral grooves are the same. According to the broken wire extractor provided by the utility model, a plurality of spiral grooves with different tapers are formed in the surface of the broken wire extracting conical head along the length direction of the broken wire extracting conical head, so that the phenomenon of wire slipping or excessive drilling between the broken wire extracting conical head and a hole punched in a broken wire can be effectively avoided, and the success rate of extracting the broken wire is greatly improved; the tip is arranged, so that the broken screw extractor can be used for being matched with a hammer head to make a center mark in the middle of the broken section of the broken screw during use, a user does not need to find a tool for making the center mark, and great convenience is brought to the user.

Description

TECHNICAL FIELD

[0001] The utility model relates to a broken wire taking-out technical field, concretely relates to a broken wire taking-out device. BACKGROUND

[0002] In the field of machining, automobile maintenance, aviation equipment and home, the situation of bolt or screw fracture in hole is often encountered. The general taking-out method is to first punch a hole on the broken screw by a drill of corresponding specification when the screw is broken, and then to take out by a broken wire taking-out device. However, the traditional broken wire taking-out device has the problems of easy wire slipping or over-drilling between the broken wire taking-out cone and the hole punched on the broken wire, which greatly reduces the success rate of taking out the broken wire, and the user needs to find a tool to make a center mark on the broken section of the broken screw to facilitate accurate punching. However, these operations will bring inconvenience to the user.

[0003] Therefore, a broken wire taking-out device is provided. SUMMARY

[0004] The utility model provides a broken wire taking-out device to solve the problems in the background art.

[0005] The specific technical solutions are as follows:

[0006] A broken wire taking-out device comprises a connecting rod, one end of the connecting rod is provided with a broken wire taking-out cone, and the other end of the connecting rod is formed with a connecting seat through cutting, wherein:

[0007] The surface of the broken wire taking-out cone has a plurality of spiral grooves with different tapers along the length direction, the spiral directions of the plurality of spiral grooves are the same, the distances between adjacent two spiral grooves are the same, the starting positions and ending positions of the plurality of spiral grooves are aligned, and the end of the broken wire taking-out cone away from the connecting rod is formed with a sharp head through cutting.

[0008] The broken wire taking-out device has the following features: the pitches of the plurality of spiral grooves gradually decrease from the connecting rod to the broken wire taking-out cone.

[0009] The broken wire taking-out device has the following features: the connecting seat is provided with a plurality of cutting grooves arranged at equal angles.

[0010] The broken wire extractor, wherein: the outermost edges of the plurality of spiral grooves are located on different straight lines.

[0011] The broken wire extractor, wherein: the outermost edges of the plurality of spiral grooves are located on the same arc line.

[0012] The broken wire extractor has the following beneficial effects:

[0013] 1. Multi-taper spiral groove design: the broken wire extraction cone head surface is provided with a plurality of spiral grooves with different tapers along the length direction, the taper of the taper larger spiral groove close to the broken wire extraction cone head 2 is smaller, there is a larger drilling pulling force, it does not need to be vertically knocked, only rotation can be reliably drilled, with the increase of the depth of entry, the taper becomes smaller, the spiral groove angle becomes larger, the drilling force decreases and the torque increases, this design can effectively avoid the phenomenon of sliding wire or excessive drilling between the broken wire extraction cone head and the hole drilled on the broken wire, thereby greatly improving the success rate of taking out the broken wire, especially suitable for disassembling broken screw in narrow space where knocking is not possible, the broken wire extractor can be driven by electric, pneumatic impact wrench to rotate to disassemble the broken screw.

[0014] 2. Pitch gradient design: the pitch of the plurality of spiral grooves gradually decreases from the connecting rod to the direction of the broken wire extraction cone head, this design further enhances the engagement force between the broken wire extraction cone head and the broken wire, and improves the extraction efficiency.

[0015] 3. The sharp head is provided, so that the broken wire extractor can be used to cooperate with the hammer head to make a center mark on the broken section of the broken screw in use, without the user to find a tool to make a center mark, which will bring great convenience to the user. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model provides a broken wire extractor's three -dimensional structure schematic diagram for embodiment 1 of the utility model;

[0017] Figure 2 The utility model provides a broken wire extractor's plane structure schematic diagram for embodiment 1 of the utility model;

[0018] Figure 3 The utility model provides a broken wire extractor's partial plane structure schematic diagram for embodiment 1 of the utility model;

[0019] Figure 4 The utility model provides a broken wire extractor's three -dimensional structure schematic diagram for embodiment 2 of the utility model;

[0020] Figure 5 The utility model provides a broken wire extractor's plane structure schematic diagram for embodiment 2 of the utility model;

[0021] Figure 6 The utility model provides a broken wire extractor's partial plane structure schematic diagram for embodiment 2 of the utility model.

[0022] In the attached figure:

[0023] 1. Connecting rod; 2. Cone head for removing broken wires; 201. Spiral groove; 202. Pointed head; 3. Connecting seat; 301. Cutting groove. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0025] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] In the description of this utility model, unless otherwise expressly specified or limited, when the term "connection" or the like appears to indicate a connection relationship between components, such term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two components or an interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0028] Example 1

[0029] The broken wire extractor provided in this embodiment is as follows: Figures 1-3 As shown, it includes: a connecting rod 1, one end of the connecting rod 1 is provided with a broken wire removal cone 2, and the other end of the connecting rod 1 is cut to form a connecting seat 3, wherein:

[0030] The surface of the broken wire removal cone head 2 has multiple spiral grooves 201 with different tapers along its length direction. The spiral directions of the multiple spiral grooves 201 are the same, and the distance between two adjacent spiral grooves 201 is the same. The starting positions and end positions of the multiple spiral grooves 201 are aligned. The end of the broken wire removal cone head 2 away from the connecting rod 1 is cut to form a pointed head 202.

[0031] A plurality of slots 301 arranged at equal angles are distributed around the circumference of the connecting seat 3 for use with electric or pneumatic impact wrenches. The number of the slots 301 may be 4-6.

[0032] The broken wire extractor adopting the above technical solution is mainly composed of a connecting rod 1, a broken wire extraction cone head 2 and a connecting seat 3. The surface of the broken wire extraction cone head 2 is provided with a plurality of spiral grooves 201 with different tapers along its length direction. The taper close to the broken wire extraction cone head 2 is larger and the spiral groove rise angle is smaller, which has a larger drilling pulling force. It does not need to be knocked vertically, and can be screwed in reliably by just providing rotation. As the penetration depth increases, the taper becomes smaller, the spiral groove rise angle becomes larger, the drilling force decreases, and the torque increases, so that when removing the broken wire, the phenomenon of slipping or over-drilling between the broken wire extraction cone head 2 and the hole punched on the broken wire can be effectively avoided, thereby greatly improving the success rate of removing the broken wire. It is particularly suitable for removing broken screws in narrow spaces where it is impossible to knock. The broken wire extractor can be driven by an electric or pneumatic impact wrench to rotate and remove the broken screw.

[0033] In addition, a pointed tip 202 is formed by cutting at the end of the broken wire extraction cone head 2 away from the connecting rod 1. The provided pointed tip 202 allows the broken wire extractor to be used in conjunction with a hammer head to make a center mark in the center of the broken cross-section of the broken head screw when in use. The user no longer needs to look for a tool for making a center mark, which will bring great convenience to the user.

[0034] Among them, such as Figure 3 As shown, in order to further improve the success rate of removing broken wires, the pitch of the multiple spiral grooves 201 is gradually reduced from the connecting rod 1 to the broken wire removal cone head 2, and 4-6 spiral grooves 201 are provided. In order to increase the drilling force of the broken wire removal cone head 2, as shown in FIG. Figure 3 As shown, the outermost edges of the multiple spiral grooves 201 are located on different straight lines, and the taper of the spiral grooves 201 gradually increases from the connecting rod 1 to the broken wire removal cone head 2, making it easier for the broken wire removal cone head 2 to drill into the punched hole, further improving the success rate of removing broken head screws.

[0035] Example 2

[0036] The broken wire extractor provided in this embodiment is different from that in embodiment 1 in that Figures 4-6As shown, the outermost edges of the plurality of spiral grooves 201 are located on the same arc, which can meet the use requirement of taking out the broken screw with small diameter.

[0037] In summary, the broken wire extractor provided by the embodiment has the following advantages:

[0038] 1. Multi-taper spiral groove design: The surface of the broken wire extraction cone 2 is provided with a plurality of spiral grooves 201 with different tapers along the length direction. The taper of the spiral groove close to the broken wire extraction cone 2 is larger, the spiral groove angle is smaller, and the drilling force is larger. Without vertical knocking, it can be reliably rotated into the hole by providing rotation only. With the increase of the depth of penetration, the taper becomes smaller, the spiral groove angle becomes larger, the drilling force decreases, and the torque increases. This design can effectively avoid the phenomenon of slipping or excessive drilling between the broken wire extraction cone 2 and the hole drilled on the broken wire, thereby greatly improving the success rate of taking out the broken wire. It is especially suitable for disassembling broken screws in narrow spaces where knocking is not possible. The broken wire extractor can be driven by an electric or pneumatic impact wrench to rotate and disassemble the broken screw.

[0039] 2. Spiral pitch gradient design: The spiral pitch of the plurality of spiral grooves 201 gradually decreases from the connecting rod 1 to the broken wire extraction cone 2. This design further enhances the engagement force between the broken wire extraction cone 2 and the broken wire, and improves the extraction efficiency.

[0040] 3. The sharp head 202 is provided to allow the broken wire extractor to be used in cooperation with a hammer to make a center mark on the center of the broken section of the broken screw during use. The center mark is used to indicate that the hole is accurately punched on the center of the broken section of the broken screw, thereby improving the success rate of taking out the broken screw. Users do not need to find a tool to make a center mark, which will bring great convenience to users.

[0041] Usage process

[0042] 1. Make a center mark:

[0043] When the screw is broken, select a broken wire extractor with appropriate size, align the sharp head 202 of the broken wire extractor with the center of the broken section of the broken screw, and then use the hammer to impact the connecting seat 3 to leave a center mark on the center of the broken section of the broken screw.

[0044] 2. Drilling:

[0045] Use a drill bit of the corresponding specification to punch a hole on the center of the broken section of the broken screw.

[0046] 3. Take out the broken screw: Align the broken wire extraction cone 2 with the hole punched on the center of the broken section of the broken wire, and gently insert it. Drive the broken wire extractor to rotate by an electric or pneumatic impact wrench to disassemble the broken screw.

[0047] The above merely describes preferred embodiments of the present application, and is not intended to limit the implementation and protection scope of the present application. For those skilled in the art, it should be understood that any equivalent substitutions and obvious changes made according to the content of the present application and drawings should be included in the protection scope of the present application.

Claims

1. A broken wire extractor, characterized in that: include: A connecting rod (1), one end of which is provided with a broken wire removal cone (2), and the other end of which is cut to form a connecting seat (3), wherein: The surface of the broken wire removal cone head (2) has a plurality of spiral grooves (201) with different tapers along its length direction, the spiral directions of the plurality of spiral grooves (201) are the same, and the distances between two adjacent spiral grooves (201) are the same, the starting positions and ending positions of the plurality of spiral grooves (201) are aligned, and the end of the broken wire removal cone head (2) away from the connecting rod (1) is cut to form a pointed head (202).

2. The broken wire extractor according to claim 1, characterized in that: The pitch of the plurality of spiral grooves (201) gradually decreases in the direction from the connecting rod (1) to the broken wire removal cone head (2).

3. The broken wire extractor according to claim 1, characterized in that: A plurality of equiangularly arranged cutting grooves (301) are distributed around the circumference of the connecting seat (3).

4. The broken wire extractor according to claim 1, characterized in that: The outermost edges of the plurality of spiral grooves (201) are located on different straight lines.

5. The broken wire extractor according to claim 1, characterized in that: The outermost edges of the plurality of spiral grooves (201) are located on the same arc line.

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