Broken wire extractor

Abstract

The invention relates to the technical field of pipeline maintenance tools, in particular to a broken wire extractor which comprises an extractor body, a locking part is arranged on the extractor body, the locking part can extend into a broken wire, the locking part comprises a mounting block and an eccentric block, the mounting block is fixedly connected with the extractor body, a connecting shaft is further arranged on the extractor body, and the connecting shaft is connected with the eccentric block. The eccentric block is rotationally connected with the connecting shaft, the mounting block and the eccentric block jointly abut against an elastic piece, and the elastic piece can adjust the rotating angle of the eccentric block on the connecting shaft; when the locking part extends into the broken wire, the eccentric block is propped open relative to the mounting block under the rebound action of the elastic piece and abuts against the inner surface of the broken wire; the invention provides a broken wire extractor which solves the problems that a locking part on a traditional broken wire extractor is slow in adjustment and inconvenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline maintenance tools, in particular to a broken wire extractor. Background Art

[0002] Nowadays, tap water is a basic condition for people's daily life, and taps that have been used for a long time are prone to damage and rust. It is necessary to dismantle the old taps and replace them with new ones. However, the aged taps are often partially broken in the pipe joints during the disassembly process, resulting in broken wires and causing pipe blockage. Therefore, broken wire extractors have appeared on the market, which use the cooperation of the arc-shaped locking parts of the two extractor bodies to stick to the inner surface of the broken wires, and the broken wires are screwed out of the pipe joints by rotating the broken wire extractors. Bolts are used to adjust the distance between the two extractor bodies, so that the broken wire extractors can adapt to broken wires with different inner diameters. The contact area between the locking part and the broken wire is large, which makes it easier to drive the broken wire to rotate in the pipe joint. However, this type of broken wire extractor requires the user to twist the bolts to slowly adjust the distance between the two extractor bodies to match broken wires with different inner diameters. The operation is cumbersome and extremely inconvenient to use. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a broken wire extractor, which solves the problem that the locking part of the traditional broken wire extractor is slow to adjust and inconvenient to use.

[0004] The technical solution adopted by the present invention is: a broken wire extractor, including an extractor body, a locking part is arranged on the extractor body, the locking part can extend into the broken wire, the locking part includes a mounting block and an eccentric block, the mounting block is fixedly connected to the extractor body, a connecting shaft is also arranged on the extractor body, the eccentric block is rotatably connected to the connecting shaft, the mounting block and the eccentric block are jointly abutted with an elastic member, and the elastic member can adjust the rotation angle of the eccentric block on the connecting shaft; when the locking part extends into the broken wire, the eccentric block is expanded relative to the mounting block under the rebound action of the elastic member and abuts against the inner surface of the broken wire.

[0005] Through the above technical solution, the user applies a driving force to the eccentric block, so that the eccentric block rotates on the connecting shaft, and at the same time, the rotating eccentric block compresses the elastic member, so that the locking part can smoothly extend into the broken wire until the locking part enters the broken wire to a degree that meets the actual needs of the user, and then the force applied to the eccentric block is removed, the elastic member rebounds and resets, and the eccentric block is spread relative to the mounting block under the rebound action of the elastic member, so that the eccentric block and the mounting block abut against the inner surface of the broken wire, and the user can rotate the extractor body to screw the broken wire out of the pipe joint; the user only needs to rotate the eccentric block on the connecting shaft, and release the eccentric block after the locking part enters the broken wire to complete the abutment of the locking part and the broken wire, which greatly reduces the steps of installing the broken wire extractor on the broken wire, making the installation of the broken wire extractor more labor-saving and convenient, and more convenient for users to use.

[0006] Furthermore, a pressing protrusion is provided on the eccentric block, and the pressing protrusion extends outwardly along the radial direction of the connecting shaft.

[0007] Through the above technical solution, the user can apply driving force to the pressing protrusion to drive the eccentric block to rotate on the connecting shaft. The pressing protrusion provides the user with sufficient force application points. The user can drive the eccentric block without touching it, which is more convenient to use.

[0008] Furthermore, a first plugging hole is provided on the pressing protrusion.

[0009] Through the above technical solution, the user can install the handle into the first plug hole, and then use the handle to apply force to the eccentric block, so that the abutment between the eccentric block and the inner surface of the broken wire is tighter and more stable, avoiding the eccentric block from slipping in the broken wire.

[0010] Furthermore, the outer side surface of the mounting block is generally arc-shaped, and the outer side surface of the eccentric block is generally arc-shaped.

[0011] Through the above technical solution, the inner surface of the broken wire in the pipe fitting is usually arc-shaped, and after the locking part is installed in the broken wire, the mounting block and the eccentric block whose outer side surfaces are overall arc-shaped can increase the contact area with the inner surface of the broken wire, making the connection between the locking part and the broken wire more secure.

[0012] Furthermore, positioning protrusions are provided on the outer side walls of the mounting block and the eccentric block.

[0013] Through the above technical solution, the setting of the positioning protrusion creates more contact points between the mounting block and the eccentric block and the inner surface of the broken wire, and there are more places where the locking part abuts against the inner surface of the broken wire, preventing the locking part from slipping or falling out of the broken wire when the user rotates the extractor body.

[0014] Further, the positioning protrusions are integrally tooth-shaped and are uniformly distributed on the outer side walls of the mounting block and the eccentric block.

[0015] Through the above technical solution, the positioning protrusions are uniformly distributed on the outer side walls of the mounting block and the eccentric block, making the forces on the mounting block and the eccentric block very uniform. The tooth-shaped positioning protrusions can better be clamped onto the inner surface of the broken wire, making the abutment between the locking part and the inner surface of the broken wire faster and more stable.

[0016] Further, the positioning protrusions are obliquely arranged, and the inclination direction of the positioning protrusions is the same as the rotation direction of the locking part.

[0017] Through the above technical solution, the positioning protrusions that are obliquely arranged and have the same inclination direction as the rotation direction of the locking part enable the positioning protrusions on the locking part to firmly abut against the inner surface of the broken wire when the user unscrews the broken wire, effectively avoiding the situation of slipping when the locking part drives the broken wire to rotate.

[0018] Further, a second insertion hole is provided on the extractor body.

[0019] Through the above technical solution, the user can install the handle into the second insertion hole and use the handle to drive the extractor body to rotate, making it more labor-saving and convenient for the user to rotate the extractor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0021] Figure 1 is the overall structure schematic diagram of the present invention;

[0022] Figure 2 is the exploded view of the present invention;

[0023] Figure 3 is the schematic diagram of the eccentric block structure of the present invention;

[0024] Figure 4 is the partial structure schematic diagram of the present invention;

[0025] The invention reference numbers are as follows:

[0026] 1. Extractor body; 2. Locking part; 3. Mounting block; 4. Eccentric block; 5. Connecting shaft; 6. Elastic member; 7. Pressing convex block; 8. First insertion hole; 9. Positioning protrusion; 10. Second insertion hole; 11. First end; 12. Second end;

[0027] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that all the directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0031] Refer to Figures 1 to 4As shown, a broken wire extractor comprises an extractor body 1, a locking portion 2 is arranged on the extractor body 1, the locking portion 2 can extend into the broken wire, the locking portion 2 comprises a mounting block 3 and an eccentric block 4, the mounting block 3 and the extractor body 1 are fixedly connected, a connecting shaft 5 is also arranged on the extractor body 1, the eccentric block 4 and the connecting shaft 5 are rotatably connected, the mounting block 3 and the eccentric block 4 are commonly abutted with an elastic member 6, and the elastic member 6 can adjust the rotation angle of the eccentric block 4 on the connecting shaft 5; when the locking portion 2 extends into the broken wire, the eccentric block 4 is stretched relative to the mounting block 3 under the rebound action of the elastic member 6 and abuts against the inner surface of the broken wire. The user applies a driving force to the eccentric block 4, so that the eccentric block 4 rotates on the connecting shaft 5. At the same time, the rotating eccentric block 4 compresses the elastic member 6, so that the locking portion 2 can smoothly extend into the broken wire until the locking portion 2 enters the broken wire to a degree that meets the actual needs of the user, and then the force applied to the eccentric block 4 is removed, and the elastic member 6 rebounds and resets. The eccentric block 4 is stretched relative to the mounting block 3 under the rebound action of the elastic member 6, so that the eccentric block 4 and the mounting block 3 abut on the inner surface of the broken wire, and the user can rotate the extractor body 1 to screw the broken wire out of the pipe joint; the user only needs to rotate the eccentric block 4 on the connecting shaft 5, and release the eccentric block 4 after the locking portion 2 enters the broken wire to complete the abutment of the locking portion 2 and the broken wire, which greatly reduces the steps of installing the broken wire extractor on the broken wire, making the installation of the broken wire extractor more labor-saving and convenient, and more convenient for users to use.

[0032] Preferably, the elastic member 6 is a spring, which is convenient for mass production in factories.

[0033] See also Figures 1 to 3 As shown, the eccentric block 4 is provided with a pressing protrusion 7, which extends outwardly along the radial direction of the connecting shaft 5. The user can apply a driving force to the pressing protrusion 7 to drive the eccentric block 4 to rotate on the connecting shaft 5. The pressing protrusion 7 provides the user with sufficient force application points, and the user can drive the eccentric block 4 without touching it, which is more convenient to use.

[0034] See also Figures 1 to 3 As shown, the pressing protrusion 7 is provided with a first plug hole 8. The user can install the handle into the first plug hole 8, and then use the handle to apply force to the eccentric block 4, so that the abutment between the eccentric block 4 and the inner surface of the broken wire is more tightly and stably, avoiding the eccentric block 4 from slipping in the broken wire.

[0035] See also Figures 1 to 4 As shown, the outer side surface of the mounting block 3 is generally arc-shaped, and the outer side surface of the eccentric block 4 is generally arc-shaped. The inner surface of the broken wire in the pipe joint is usually arc-shaped, and after the locking part 2 is installed in the broken wire, the mounting block 3 and the eccentric block 4 with the outer side surfaces generally arc-shaped can increase the contact area with the inner surface of the broken wire, making the connection between the locking part 2 and the broken wire more secure.

[0036] Refer to Figures 1 to 4 As shown, positioning protrusions 9 are provided on the outer side walls of the mounting block 3 and the eccentric block 4. The setting of the positioning protrusions 9 results in more contact points between the mounting block 3 and the eccentric block 4 and the inner surface of the broken wire, and there are more places where the locking portion 2 abuts against the inner surface of the broken wire, preventing the locking portion 2 from slipping or disengaging inside the broken wire when the user rotates the extractor body 1.

[0037] Refer to Figures 1 to 4 As shown, the positioning protrusion 9 is integrally tooth-shaped and is uniformly and densely distributed on the outer side walls of the mounting block 3 and the eccentric block 4. The uniform and dense distribution of the positioning protrusion 9 on the outer side walls of the mounting block 3 and the eccentric block 4 makes the forces on the mounting block 3 and the eccentric block 4 very uniform, and the tooth-shaped positioning protrusion 9 can be better clamped onto the inner surface of the broken wire, making the abutment between the locking portion 2 and the inner surface of the broken wire faster and more stable.

[0038] Refer to Figures 1 to 4 As shown, the positioning protrusion 9 is obliquely arranged, and the inclination direction of the positioning protrusion 9 is the same as the rotation direction of the locking portion 2. The positioning protrusion 9 that is obliquely arranged and has the same inclination direction as the rotation direction of the locking portion 2 enables the positioning protrusion 9 on the locking portion 2 to firmly abut against the inner surface of the broken wire when the user unscrews the broken wire, effectively avoiding the situation where the locking portion 2 slips when driving the broken wire to rotate.

[0039] The connecting shaft 5 is provided with a first end 11 and a second end 12, and the distance between the first end 11 and the extractor body 1 is greater than the distance between the second end 12 and the extractor body 1; along the axial direction of the connecting shaft 5, when observed from the perspective from the first end 11 to the second end 12, the rotation direction of the locking portion 2 and the inclination directions of all the tooth-shaped positioning protrusions 9 are clockwise.

[0040] Refer to Figure 1 、 2 As shown in FIGS. 、4, a second socket hole 10 is provided on the extractor body 1. The user can install the handle into the second socket hole 10 and use the handle to drive the extractor body 1 to rotate, making it more labor-saving and convenient for the user to rotate the extractor body 1.

[0041] When the present invention is in use, the user applies a driving force to the eccentric block 4, so that the eccentric block 4 rotates on the connecting shaft 5, and the rotating eccentric block 4 compresses the elastic member 6, so that the locking portion 2 can smoothly extend into the broken wire until the locking portion 2 enters the broken wire to a degree that meets the actual needs of the user, and then the force applied to the eccentric block 4 is removed, and the elastic member 6 rebounds and resets. The eccentric block 4 is stretched relative to the mounting block 3 under the rebound action of the elastic member 6, so that the toothed positioning protrusions 9 on the eccentric block 4 and the mounting block 3 abut against the inner surface of the broken wire, and then the handle is installed in the second plug hole 10, and the handle is used to drive the extractor body 1 to rotate, so as to screw the broken wire out of the pipe joint; and the user can install the handle in the first plug hole 8, and then use the handle to apply a force to the eccentric block 4, so that the abutment between the eccentric block 4 and the inner surface of the broken wire is tighter and more stable.

[0042] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A broken wire extractor, comprising an extractor body (1), characterized in that: The extractor body (1) is provided with a locking portion (2), and the locking portion (2) can extend into the broken wire. The locking portion (2) comprises a mounting block (3) and an eccentric block (4), and the mounting block (3) is fixedly connected to the extractor body (1). The extractor body (1) is also provided with a connecting shaft (5), and the eccentric block (4) and the connecting shaft (5) are rotatably connected. The mounting block (3) and the eccentric block (4) are commonly abutted against an elastic member (6), and the elastic member (6) can adjust the rotation angle of the eccentric block (4) on the connecting shaft (5); when the locking portion (2) extends into the broken wire, the eccentric block (4) is opened relative to the mounting block (3) under the rebound action of the elastic member (6) and abuts against the inner surface of the broken wire.

2. A broken wire extractor according to claim 1, characterized in that: The eccentric block (4) is provided with a pressing protrusion (7), and the pressing protrusion (7) extends outwardly in the radial direction of the connecting shaft (5).

3. A broken wire extractor according to claim 2, characterized in that: The pressing protrusion (7) is provided with a first plug-in hole (8).

4. A broken wire extractor according to claim 2 or 3, characterized in that: The outer side surface of the mounting block (3) is in an arc shape as a whole, and the outer side surface of the eccentric block (4) is in an arc shape as a whole.

5. A broken wire extractor according to claim 4, characterized in that: Positioning protrusions (9) are provided on the outer side walls of the mounting block (3) and the eccentric block (4).

6. A broken wire extractor according to claim 5, characterized in that: The positioning protrusions (9) are tooth-shaped as a whole, and the positioning protrusions (9) are evenly and densely distributed on the outer side walls of the mounting block (3) and the eccentric block (4).

7. A broken wire extractor according to claim 6, characterized in that: The positioning protrusion (9) is arranged obliquely, and the inclination direction of the positioning protrusion (9) is the same as the rotation direction of the locking portion (2).

8. A broken wire extractor according to claim 2 or 3 or 5 or 6 or 7, characterized in that: The extractor body (1) is provided with a second plug-in hole (10).

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