Pipe shears with blades convenient to replace

Abstract

The utility model provides a pair of pipe shears convenient for blade replacement, which comprises a main shell and a blade, a detachable knob is arranged on one side of the main shell, a locking mechanism is arranged in the main shell, the locking mechanism and the knob are coaxially arranged, the locking mechanism comprises a driving piece, a positioning pin and a fastening nut, a positioning groove is arranged on the blade, and the positioning pin is arranged in the positioning groove. The driving piece is connected with the blade in an attached mode, the positioning pin penetrates through the positioning groove and the driving piece to be connected with the fastening nut, and the fastening nut is used for pressing the driving piece and the blade. According to the pipe shears with the blades convenient to replace, the locking mechanism is installed in the main shell to lock the blades and drive the blades to operate for shearing at the same time, meanwhile, the positioning bolts are arranged to position the blades and the driving piece so that the blades can operate stably, and only the positioning bolts need to be taken down and the fastening nuts need to be unscrewed during disassembly. And the blade can be separated from the locking mechanism and can be directly taken out from the main shell to be detached, so that the tool changing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe cutters, in particular to a pipe cutter with easy replacement of blades. Background Art

[0002] Pipe shears are one of the tools frequently used in piping projects. Their main purpose is to cut pipes into sections for connecting electrical, water, gas and other pipelines. Electric straight-cutting pipe shears use an internal motor and drive structure to drive the blade to push it out horizontally and then cut the pipe at the cutter head. Existing electric pipe shears need to be positioned by multiple workpieces such as internal positioning pins and bolts to maintain smooth cutting during use, thereby avoiding blade vibration or offset that may cause safety problems. However, although the blade installed in this way is stable, it is associated with multiple parts. After the entire pipe shear shell is disassembled, the positioning workpieces on both sides of the blade need to be removed one by one before the blade can be removed. Therefore, the existing electric pipe shears are relatively complicated to change the blade, which affects the user experience. Utility Model Content

[0003] (1) Technical issues to be resolved

[0004] The problem to be solved by the utility model is to provide a pipe shear with easy-to-replace blades, so as to overcome the problem of complicated blade replacement steps of the pipe shears in the prior art.

[0005] (2) Technical solution

[0006] In order to solve the technical problem, the utility model provides a pipe shear that is easy to replace the blade, including a main shell and a blade movably installed inside the main shell, a detachable knob is installed on one side of the main shell, and a locking mechanism is installed in the main shell, the locking mechanism is coaxially arranged with the knob, the locking mechanism includes a driving member, a positioning pin and a fastening nut, a positioning groove is provided on the blade, the driving member is fitly connected to the blade, the positioning pin passes through the positioning groove and the driving member is connected to the fastening nut, the fastening nut is used to press the driving member and the blade, and the blade can be taken out after removing the knob and loosening the fastening nut.

[0007] In some embodiments, a first mounting groove is provided on the driving member, the fastening nut is placed in the first mounting groove, a driving portion is provided at the bottom of the first mounting groove, and the driving portion is placed in the positioning groove to cooperate with the blade.

[0008] In some embodiments, a second mounting groove is further provided on the driving member, and a positioning hole is provided on the blade. A positioning bolt in the second mounting groove passes through the positioning hole, and the positioning bolt plays a positioning role to prevent the blade from loosening during shearing.

[0009] In some embodiments, a connecting seat and a through hole are provided on the main shell, the positioning bolt is placed in the through hole, the knob is installed on the connecting seat, the connecting seat is symmetrically provided with slots, the side wall of the knob is symmetrically provided with buckles corresponding to the slots, and the surface of the knob is provided with a toggle key along the diameter. The knob can be disassembled after the buckle is disengaged from the slot by rotating the knob with the toggle key.

[0010] (3) Beneficial effects

[0011] The utility model provides a pipe shear which is convenient for replacing blades. A locking mechanism is installed inside the main housing to lock the blade and drive the blade to cut. A positioning bolt is provided to position the blade and the driving member so that the blade can run smoothly. When disassembling, it is only necessary to remove the positioning bolt and loosen the fastening nut to separate the blade from the locking mechanism. The blade can be directly taken out of the main housing for disassembly, thereby improving the efficiency of blade replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0013] Figure 1 This is a three-dimensional diagram of a pipe shear with easy blade replacement according to the present invention;

[0014] Figure 2 This is a three-dimensional diagram of the internal structure of a pipe shear with easy blade replacement according to the present invention;

[0015] Figure 3 This is an exploded view of the blade and locking mechanism of a pipe shear that is easy to replace the blade;

[0016] Figure 4 This is a three-dimensional diagram of the blade and locking mechanism of a pipe shear with easy blade replacement according to the utility model;

[0017] Figure 5 This is a three-dimensional diagram of the main shell surface layout of a pipe shear that is easy to replace blades in the utility model;

[0018] Figure 6 This is a three-dimensional diagram of a driving component of a pipe shear that is easy to replace blades according to the utility model;

[0019] Figure 7 This is a three-dimensional back view of a driving member of a pipe shear with easy blade replacement according to the present invention;

[0020] Figure 8The utility model is a three-dimensional diagram of a knob of a pipe shear for facilitating blade replacement.

[0021] The names of the components corresponding to the various figure marks in the figure are: 1. Main shell; 2. Blade; 3. Knob; 4. Driving member; 5. Locating pin; 6. Fastening nut; 7. Locating groove; 8. First mounting groove; 9. Driving part; 10. Second mounting groove; 11. Locating hole; 12. Locating bolt; 13. Connecting seat; 14. Through hole; 15. Slot; 16. Buckle; 17. Toggle key. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0023] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0024] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0025] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0026] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0027] See Figures 1 to 8 The utility model provides a pipe shear for easy replacement of blades, comprising a main housing 1 and a blade 2 movably mounted inside the main housing 1, a detachable knob 3 is installed on one side of the main housing 1, and a locking mechanism is installed in the main housing 1, and the locking mechanism is coaxially arranged with the knob 3; specifically, the locking mechanism includes a driving member 4, a positioning pin 5 and a fastening nut 6. The blade 2 is provided with a positioning groove 7, and the driving member 4 is fitted and connected with the blade 2, wherein the driving member 4 is provided with a first mounting groove 8, and the fastening nut 6 is placed in the first mounting groove 8. The bottom of the first mounting groove 8 is provided with a driving portion 9, and the driving portion 9 is placed in the positioning groove 7 and cooperates with the blade 2. The driving member 4 drives the blade 2 to rotate and shear through the driving portion 9, and the positioning pin 5 passes through the positioning groove 7 and the driving member 4 is connected with the fastening nut 6. The first mounting groove 8, the positioning pin 5 and the knob 3 are coaxially arranged, and the fastening nut 6 is used to press the driving member 4 and the blade 2. The blade 2 can be taken out after removing the knob 3 and loosening the fastening nut 6.

[0028] In some embodiments, as Figures 3 to 8 As shown, the driving member 4 is also provided with a second mounting groove 10, and the blade 2 is provided with a positioning hole 11. The positioning bolt 12 in the second mounting groove 10 passes through the positioning hole 11. The positioning bolt 12 is used to position the blade 2 and the driving member 4 so that the driving member 4 can push the blade 2 smoothly. A connecting seat 13 and a through hole 14 are provided on the main shell 1. The positioning bolt 12 is placed in the through hole 14, and the knob 3 is installed on the connecting seat 13. The positioning bolt 12 can be directly removed from the through hole 14 to remove it before the blade 2 can be disassembled; in this embodiment, the connecting seat 13 is symmetrically provided with a card slot 15, and the side wall of the knob 3 is symmetrically provided with a card buckle 16 corresponding to the card slot 15. The surface of the knob 3 is provided with a toggle key 17 along the diameter. Rotating the toggle key 17 can disengage the card buckles 16 on both sides from the card slot 15. At this time, the knob 3 can be taken out, and the blade 2 can be disassembled after loosening the fastening nut 6 with an inner hexagonal wrench.

[0029] The utility model provides a pipe shear which is convenient for replacing blades. A locking mechanism is installed inside the main housing to lock the blade and drive the blade to cut. A positioning bolt is provided to position the blade and the driving member so that the blade can run smoothly. When disassembling, it is only necessary to remove the positioning bolt and loosen the fastening nut to separate the blade from the locking mechanism. The blade can be directly taken out of the main housing for disassembly, thereby improving the efficiency of blade replacement.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A pipe shear with easy-to-replace blades, comprising a main housing (1) and a blade (2) movably mounted inside the main housing (1), characterized in that: A detachable knob (3) is installed on one side of the main housing (1), and a locking mechanism is installed in the main housing (1). The locking mechanism is coaxially arranged with the knob (3). The locking mechanism includes a driving member (4), a positioning pin (5) and a fastening nut (6). A positioning groove (7) is provided on the blade (2). The driving member (4) is closely connected to the blade (2). The positioning pin (5) passes through the positioning groove (7) and the driving member (4) is connected to the fastening nut (6). The fastening nut (6) is used to press the driving member (4) and the blade (2). The blade (2) can be taken out after the knob (3) is disassembled and the fastening nut (6) is loosened.

2. The pipe shears with easy-to-replace blades as claimed in claim 1, characterized in that: The driving member (4) is provided with a first mounting groove (8), and the fastening nut (6) is placed in the first mounting groove (8).

3. The pipe shears with easy blade replacement according to claim 2, characterized in that: A driving portion (9) is provided at the bottom of the first installation groove (8), and the driving portion (9) is placed in the positioning groove (7) and cooperates with the blade (2).

4. The pipe shears with easy blade replacement according to claim 3, characterized in that: The driving member (4) is further provided with a second mounting groove (10), the blade (2) is provided with a positioning hole (11), and a positioning bolt (12) in the second mounting groove (10) passes through the positioning hole (11).

5. The pipe shears with easy blade replacement according to claim 4, characterized in that: The main housing (1) is provided with a connecting seat (13) and a through hole (14), the positioning bolt (12) is placed in the through hole (14), and the knob (3) is installed on the connecting seat (13).

6. The pipe shears with easy-to-replace blades according to claim 5, characterized in that: The connecting seat (13) is symmetrically provided with a card slot (15), and the side wall of the knob (3) is symmetrically provided with a card buckle (16) corresponding to the card slot (15).

7. The pipe shears with easy-to-replace blades according to claim 1, characterized in that: A toggle key (17) is provided on the surface of the knob (3) along the diameter.

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