Pipe cutter with adjustable shearing range

Abstract

The utility model provides a pipe cutter with an adjustable shearing range, which comprises a shell and a movable handle hinged in the shell, and a first movable groove for the movable handle to move is arranged in the shell. One end of the first movable groove is provided with a first limiting blocking wall used for limiting the maximum rotation angle of the movable handle, and a gear switch is movably installed on the side, facing the first limiting blocking wall, of the movable handle and used for adjusting the maximum rotation angle of the movable handle. During adjustment, the gear switch moves to correspond to the first limiting retaining wall, and due to blocking of the gear switch, the maximum rotation angle of the movable handle is decreased; according to the pipe cutter with the adjustable shearing range, the defect that the shearing range of an existing pipe cutter cannot be adjusted is overcome.

Description

Technical Field

[0001] The utility model relates to the field of pipe cutters, in particular to a pipe cutter with an adjustable shearing range. Background Art

[0002] In pipeline installation and maintenance work, pipe cutters are commonly used tools to cut pipe fittings.

[0003] For example, patent number CN219093808U discloses a pipe cutter, which includes a fixed arm and a rotating arm hinged to the fixed arm, wherein the front end of the fixed arm is provided with a fixed blade holder, and the fixed blade holders are two, and a blade groove is formed between the two fixed blade holders. The front end of the rotating arm is fixedly connected to a movable blade, which rotates inside the blade groove. Currently, pipes have large and small diameters, and small diameter pipes are cut more frequently. If the cutting range (blade opening) is too large, it will be difficult for the user to hold the pipe when cutting small diameter pipes, resulting in discomfort, laborious cutting, and inconvenient operation. In the above structure, the maximum angle of rotation of the rotating arm relative to the fixed arm is fixed, so that the cutting range of the blade is fixed. In order to ensure that it can cut large diameter pipes, the cutting range is generally large. Although it is suitable for cutting large diameter pipes, when cutting small diameter pipes, the user is very uncomfortable due to the large cutting range. The cutting range of the blade cannot be adjusted according to the thickness of the pipe, resulting in low flexibility and poor practicality. Utility Model Content

[0004] (1) Technical issues to be resolved

[0005] The problem to be solved by the utility model is to provide a pipe cutter with an adjustable shearing range, so as to overcome the defect that the shearing range of the existing pipe cutter cannot be adjusted.

[0006] (2) Technical solution

[0007] In order to solve the technical problem, the utility model provides a pipe cutter with an adjustable shearing range, comprising a shell and a movable handle hinged in the shell, a first movable groove for the movable handle to move is provided in the shell, a first limit stop wall for limiting the maximum rotation angle of the movable handle is provided at one end of the first movable groove, a gear switch is movably installed on the side of the movable handle facing the first limit stop wall, and the gear switch is used to adjust the maximum rotation angle of the movable handle; during adjustment, the gear switch moves to correspond to the first limit stop wall, and due to the obstruction of the gear switch, the maximum rotation angle of the movable handle becomes smaller.

[0008] In some embodiments, the gear switch is slidably mounted on the movable handle, the movable handle is symmetrically provided with sliding grooves, and the gear switch is provided with a slider adapted to the sliding grooves.

[0009] In some embodiments, a limit block is provided in the slide groove, and the limit block divides the slide groove into a first gear slot and a second gear slot; a protrusion is provided at the end of the slider, and the protrusion can switch between the first gear slot and the second gear slot.

[0010] In some embodiments, when the protrusion is placed in the first gear slot, the gear switch corresponds to the first limit wall, the gear switch is in the first gear, and the maximum rotation angle of the movable handle becomes smaller; when the protrusion is placed in the second gear slot, the gear switch is staggered with the first limit wall, the gear switch is in the second gear, and the maximum rotation angle of the movable handle becomes larger.

[0011] In some embodiments, oblique blocking surfaces are respectively provided on both sides of the limiting block, and the oblique blocking surfaces are used to facilitate the switching of the protrusion between the first gear slot and the second gear slot.

[0012] In some embodiments, the movable handle is provided with a third limit retaining wall at a position close to the shift switch, and the third limit retaining wall can be placed against the side wall of the first movable groove.

[0013] In some embodiments, a blade is mounted on the movable handle, a second movable slot for the blade to move is provided on the housing, and a second limit stop wall for limiting the maximum rotation angle of the blade is provided at one end of the second movable slot; when the gear switch is in the second gear, the maximum rotation angle of the movable handle is limited by the cooperation of the first limit stop wall, the second limit stop wall and the third limit stop wall.

[0014] In some embodiments, a blade holder corresponding to the blade is provided on the shell, and a cutting groove for the blade to enter is provided on the blade holder; a torsion spring is installed between the shell and the movable handle, and the torsion spring always makes the movable handle tend to move away from the shell; a U-shaped frame is hinged on the movable handle, and the U-shaped frame is used to keep the movable handle in a closed state.

[0015] In some embodiments, the blade is detachably connected to the movable handle, one end of the blade is inserted into the movable handle, and a locking member for locking the blade is installed on the movable handle.

[0016] In some embodiments, a stepped surface is provided on the shift switch.

[0017] (3) Beneficial effects

[0018] The utility model provides a pipe cutter with an adjustable shearing range, which is additionally provided with a gear switch, which can slide on a movable handle; when the gear switch is in the first gear, the gear switch corresponds to the first limit retaining wall, and due to the obstruction of the gear switch, the maximum rotation angle of the movable handle becomes smaller; when the gear switch is in the second gear, the gear switch is staggered with the first limit retaining wall, the gear switch does not interfere with the rotation of the movable handle, and the maximum rotation angle of the movable handle becomes larger; the pipe cutter can adjust the maximum rotation angle of the movable handle by sliding the gear switch, thereby adjusting the shearing range of the blade; in actual use, the shearing range can be adjusted according to the thickness of the pipe fitting, which has higher flexibility and better use effect; and overcomes the defect that the shearing range of the existing pipe cutter cannot be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 This is a three-dimensional diagram of a pipe cutter with an adjustable cutting range, with the gear switch in the first gear;

[0021] Figure 2 This is a cross-sectional view of a pipe cutter with an adjustable cutting range, with the gear switch in the first gear;

[0022] Figure 3 This is a three-dimensional diagram of the interior of the housing of a pipe cutter with an adjustable cutting range when the gear switch is in the first gear;

[0023] Figure 4 This is an exploded view of a movable handle and a gear switch of a pipe cutter with adjustable cutting range according to the present invention;

[0024] Figure 5 This is a three-dimensional diagram of a pipe cutter position switch with adjustable cutting range according to the present invention;

[0025] Figure 6 This is a three-dimensional diagram of a pipe cutter housing with an adjustable cutting range according to the present invention;

[0026] Figure 7 This is a three-dimensional diagram of the pipe cutter housing with adjustable cutting range from another perspective of the present invention;

[0027] Figure 8 This is a perspective view of a pipe cutter with an adjustable cutting range, with the gear switch in the second gear;

[0028] Figure 9 This is a cross-sectional view of a pipe cutter with an adjustable cutting range, with the gear switch in the second gear;

[0029] Figure 10 This is a three-dimensional diagram of a pipe cutter with adjustable cutting range in a closed state according to the present invention;

[0030] The names of the components corresponding to the various figure marks in the figure are: 1. Shell; 101. First movable groove; 102. First limiting retaining wall; 103. Second movable groove; 104. Second limiting retaining wall; 105. Knife holder; 106. Cutting knife groove; 2. Movable handle; 201. Slide groove; 202. Limiting block; 203. First gear groove; 204. Second gear groove; 205. Oblique retaining surface; 206. Third limiting retaining wall; 3. Gear switch; 301. Slider; 302. Bump; 4. Blade; 5. Torsion spring; 6. U-shaped frame; 7. Locking member. DETAILED DESCRIPTION

[0031] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0037] See Figures 1 to 10 The present invention provides a pipe cutter with an adjustable cutting range, comprising a housing 1 and a movable handle 2 hinged within the housing 1. The movable handle 2 is hinged within the housing 1 via a hinge axis. A first movable slot 101 is provided within the housing 1 for the movable handle 2 to move. A first limit stop 102 is provided at one end of the first movable slot 101 for limiting the maximum rotation angle of the movable handle 2. A gear switch 3 is movably mounted on the side of the movable handle 2 facing the first limit stop 102. The gear switch 3 is used to adjust the maximum rotation angle of the movable handle 2, thereby adjusting the cutting range of the pipe cutter.

[0038] During adjustment, the shift switch 3 moves to correspond with the first limit stop 102. At this time, due to the obstruction of the shift switch 3, the maximum rotation angle of the movable handle 2 is reduced. When the shift switch 3 slides upward or downward to offset from the first limit stop 102, the maximum rotation angle of the movable handle 2 is increased due to the lack of obstruction by the shift switch 3. This structure allows the pipe cutter to adjust the cutting range according to the thickness of the pipe, providing greater flexibility. Especially when cutting small-diameter pipes, the shift switch 3 can be used to reduce the cutting range (blade opening), thereby facilitating the user's grip and applying force, increasing grip comfort, making operation more convenient, and helping to improve cutting efficiency.

[0039] In some embodiments, as Figure 4 and Figure 5As shown, the gear switch 3 is slidably mounted on the movable handle 2. The movable handle 2 is symmetrically provided with a slide groove 201. The gear switch 3 is provided with a slider 301 that matches the slide groove 201 and is positioned within the slide groove 201. A limit block 202 is positioned within the slide groove 201, dividing the slide groove 201 into a first gear groove 203 and a second gear groove 204. A protrusion 302 is provided at the end of the slider 301, which can be switched between the first gear groove 203 and the second gear groove 204. In this embodiment, the gear switch 3 is mounted using a sliding mechanism, which makes it easier to operate. In actual designs, a hinged or other mounting method may also be used.

[0040] like Figure 1 and Figure 2 As shown, when the protrusion 302 is placed in the first gear slot 203, the gear switch 3 corresponds to the first limit wall 102, the gear switch 3 is in the first gear (lower limit), and the maximum rotation angle of the movable handle 2 becomes smaller. At this time, the maximum rotation angle of the movable handle 2 is A. Figure 8 and Figure 9 As shown, when the protrusion 302 is placed in the second gear groove 204, the gear switch 3 is offset from the first limit retaining wall 102, and the gear switch 3 is in the second gear (upper limit position). The gear switch 3 is placed inside the housing 1, and the maximum rotation angle of the movable handle 2 increases. At this time, the maximum rotation angle of the movable handle 2 is B, and B is greater than A. In this embodiment, when the gear switch 3 is in the lower limit position, it is the first gear, and when the gear switch 3 is in the upper limit position, it is the second gear. That is, when the gear switch 3 slides upward, it is offset from the first limit retaining wall 102; in actual design, the gear switch 3 can also be slid downward to offset it from the first limit retaining wall 102.

[0041] In some embodiments, as Figure 4 As shown, oblique blocking surfaces 205 are respectively provided on both sides of the limit block 202, and the oblique blocking surfaces 205 are used to facilitate the switching of the protrusion 302 between the first gear slot 203 and the second gear slot 204, so that the sliding gear switch 3 is more labor-saving and the adjustment is smoother.

[0042] In some embodiments, as Figures 6 to 8 As shown, the movable handle 2 is provided with a third limit retaining wall 206 near the position switch 3. The third limit retaining wall 206 can abut against the side wall of the first movable groove 101. When the position switch 3 is in the second gear, the third limit retaining wall 206 abuts against the side wall of the first movable groove 101 to limit the maximum rotation angle of the movable handle 2, which has a good limiting effect.

[0043] In some embodiments, as Figures 6 to 8As shown, the movable handle 2 is mounted with a blade 4. The housing 1 is provided with a second movable slot 103 for the blade 4 to move. A second stopper 104 is provided at one end of the second movable slot 103 to limit the maximum rotation angle of the blade 4. When the gear switch 3 is in the second gear, the first stopper 102, the second stopper 104, and the third stopper 206 cooperate to limit the maximum rotation angle of the movable handle 2. In this embodiment, the maximum rotation angle of the movable handle 2 is limited by three stoppers, which provides a better limiting effect. In actual design, two stoppers can also be used to simplify the structure.

[0044] In some embodiments, as Figures 7 to 10 As shown, a blade holder 105 corresponding to the blade 4 is provided on the housing 1, and a cutting groove 106 for the blade 4 to enter is provided on the blade holder 105; a torsion spring 5 is installed between the housing 1 and the movable handle 2, and the torsion spring 5 always makes the movable handle 2 have a tendency to move away from the housing 1; a U-shaped frame 6 is hinged on the movable handle 2, and the U-shaped frame is mounted on the housing 1 when closed, and the U-shaped frame 6 is used to keep the movable handle 2 in a closed state.

[0045] In some embodiments, as Figures 2 to 4 As shown, the blade 4 is detachably connected to the movable handle 2, with one end of the blade 4 inserted into the movable handle 2. The movable handle 2 is equipped with a locking member 7 for locking the blade 4. The locking member 7 is provided with a clamping head, and the blade 4 is provided with a slot that can cooperate with the clamping head. This structure enables the rapid removal of the blade 4. During removal, pressing the locking member 7 disengages the clamping head from the slot, and the blade 4 is unlocked and can be directly pulled out.

[0046] In some embodiments, a stepped surface is provided on the gear switch 3. This structure allows the gear switch 3 to be slid according to actual needs during adjustment so that stepped surfaces of different depths on the gear switch 3 correspond to the first limit retaining wall 102, thereby increasing the number of adjustable gears.

[0047] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0048] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A pipe cutter with adjustable cutting range, characterized by: The invention comprises a housing (1) and a movable handle (2) hinged in the housing (1), wherein a first movable groove (101) for the movable handle (2) to move is provided in the housing (1), a first limit stop wall (102) for limiting the maximum rotation angle of the movable handle (2) is provided at one end of the first movable groove (101), a gear switch (3) is movably installed on a side of the movable handle (2) facing the first limit stop wall (102), and the gear switch (3) is used to adjust the maximum rotation angle of the movable handle (2); when adjusting, the gear switch (3) moves to correspond to the first limit stop wall (102), and due to the obstruction of the gear switch (3), the maximum rotation angle of the movable handle (2) becomes smaller; The gear switch (3) can be slidably mounted on the movable handle (2); a slide groove (201) is symmetrically provided on the movable handle (2); and a slider (301) adapted to the slide groove (201) is provided on the gear switch (3); a limit block (202) is provided in the slide groove (201), and the limit block (202) divides the slide groove (201) into a first gear groove (203) and a second gear groove (204); a protrusion (302) is provided at the end of the slider (301), and the protrusion (302) can switch between the first gear groove (203) and the second gear groove (204).

2. The pipe cutter with adjustable cutting range according to claim 1, characterized in that: When the protrusion (302) is placed in the first gear slot (203), the gear switch (3) corresponds to the first limit retaining wall (102), the gear switch (3) is in the first gear, and the maximum rotation angle of the movable handle (2) becomes smaller; when the protrusion (302) is placed in the second gear slot (204), the gear switch (3) is staggered with the first limit retaining wall (102), the gear switch (3) is in the second gear, and the maximum rotation angle of the movable handle (2) becomes larger.

3. The pipe cutter with adjustable cutting range according to claim 1, characterized in that: Oblique blocking surfaces (205) are respectively provided on both sides of the limiting block (202), and the oblique blocking surfaces (205) are used to facilitate the switching of the protrusion (302) between the first gear slot (203) and the second gear slot (204).

4. The pipe cutter with adjustable cutting range according to claim 2, characterized in that: The movable handle (2) is provided with a third limit retaining wall (206) at a position close to the gear switch (3), and the third limit retaining wall (206) can be placed against the side wall of the first movable groove (101).

5. The pipe cutter with adjustable cutting range according to claim 4, characterized in that: A blade (4) is mounted on the movable handle (2); a second movable groove (103) for the blade (4) to move is provided on the housing (1); a second limit retaining wall (104) for limiting the maximum rotation angle of the blade (4) is provided at one end of the second movable groove (103); when the gear switch (3) is in the second gear, the maximum rotation angle of the movable handle (2) is limited by the cooperation of the first limit retaining wall (102), the second limit retaining wall (104) and the third limit retaining wall (206).

6. The pipe cutter with adjustable cutting range according to claim 5, characterized in that: The housing (1) is provided with a blade holder (105) corresponding to the blade (4), and the blade holder (105) is provided with a cutting groove (106) for the blade (4) to enter; a torsion spring (5) is installed between the housing (1) and the movable handle (2), and the torsion spring (5) always makes the movable handle (2) have a tendency to move away from the housing (1); a U-shaped frame (6) is hinged on the movable handle (2), and the U-shaped frame (6) is used to keep the movable handle (2) in a closed state.

7. The pipe cutter with adjustable cutting range according to claim 5, characterized in that: The blade (4) is detachably connected to the movable handle (2), one end of the blade (4) is inserted into the movable handle (2), and a locking member (7) for locking the blade (4) is installed on the movable handle (2).

8. The pipe cutter with adjustable cutting range according to claim 1, characterized in that: The gear switch (3) is provided with a stepped surface.

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