CN220560587U - Angle adjusting mechanism of handheld cutting machine - Google Patents
Angle adjusting mechanism of handheld cutting machine Download PDFInfo
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- CN220560587U CN220560587U CN202322249936.5U CN202322249936U CN220560587U CN 220560587 U CN220560587 U CN 220560587U CN 202322249936 U CN202322249936 U CN 202322249936U CN 220560587 U CN220560587 U CN 220560587U
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- 238000005520 cutting process Methods 0.000 title claims abstract description 73
- 238000005452 bending Methods 0.000 claims abstract description 29
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
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Abstract
The application provides an angle adjusting mechanism of a handheld cutting machine, which comprises a fixed part and a movable part, wherein the fixed part and the movable part are provided with bending degrees, and the movable part is overlapped above the fixed part; the fixed part comprises a first fixed plate and a second fixed plate, and the movable part comprises a first movable plate and a second movable plate; the first movable plate is provided with a displacement amount along the short side of the first fixed plate; the second movable plate has a rotation amount relative to the second fixed plate; the first fixed plate, the second fixed plate, the first movable plate and the second movable plate are provided with a notch at the bending part; the notches of the first fixing plate and the second fixing plate are connected to form a first notch; the notches of the first movable plate and the second movable plate are connected to form a second notch; the first opening is communicated with the second opening; an angle adjusting device is arranged between the second fixed plate and the second movable plate, the second movable plate is used for installing the handheld cutting machine, and the cutting head of the handheld cutting machine is arranged in the opening.
Description
Technical Field
The application relates to the technical field of cutting machine processing, in particular to an angle adjusting mechanism of a handheld cutting machine.
Background
The handheld cutting machine is common plate and bar cutting equipment, is widely applied to various industries such as engineering construction, metallurgy, automobile manufacturing and the like due to convenient operation, and is particularly widely applied to building engineering decoration construction.
In the prior art, the cutting head of a hand-held cutting machine is moved in a straight line during cutting, thereby cutting a workpiece. But in actual cutting process, the work piece needs to cut different specifications according to actual demand, including the work piece that needs to process into the inclination, just needs the manual inclination of workman's handheld cutting machine follow side to cut the operation, lean on the workman manual maintenance in certain angle, and in actual cutting process, the cutting head of handheld cutting machine can warp the phenomenon, influences the rectilinear movement of cutting head, probably can harm the work piece simultaneously, leads to the disability rate to increase.
Disclosure of Invention
Aiming at the problems in the prior art and the defects in the prior art, the utility model aims to solve the main technical problem that the angle of the handheld cutting machine cannot be adjusted and fixed, so the angle adjusting mechanism of the handheld cutting machine can adjust the angle of the cutting head of the cutting machine and realize multi-angle cutting of a workpiece.
In order to solve the technical problem, the application provides an angle adjusting mechanism of a handheld cutting machine, which adopts the following technical scheme:
the angle adjusting mechanism of the handheld cutting machine comprises a fixed part and a movable part, wherein the fixed part and the movable part are provided with bending degrees, and the movable part is overlapped above the fixed part; the fixed part comprises a first fixed plate and a second fixed plate, and the movable part comprises a first movable plate and a second movable plate; the first movable plate is provided with a displacement amount along the short side of the first fixed plate; the second movable plate has a rotation amount relative to the second fixed plate;
the first movable plate and the second movable plate are hinged at a bending position, and a notch is formed in the bending position of the first fixed plate, the second fixed plate, the first movable plate and the second movable plate; the notches of the first fixing plate and the second fixing plate are connected to form a first notch; the notches of the first movable plate and the second movable plate are connected to form a second notch; the first opening is communicated with the second opening;
an angle adjusting device is arranged between the second fixed plate and the second movable plate, the second movable plate is used for installing the handheld cutting machine, and the cutting head of the handheld cutting machine is arranged in the opening.
In a preferred embodiment, a locking device is disposed between the first fixed plate and the first movable plate, for locking the relative positions of the first movable plate and the first fixed plate.
In a preferred embodiment, the locking device comprises a sliding groove arranged on the first movable plate and a locking piece arranged on the first fixed plate;
when the locking piece is unlocked, the locking piece moves back and forth along the sliding groove, so that the first movable plate has a certain displacement;
when the locking piece is in locking, the locking piece is locked in the sliding groove so as to limit the displacement of the first movable plate.
In a preferred embodiment, edges are arranged at one ends of the first fixed plate and the first movable plate far away from the bending position, and limiting devices are arranged at the edges of the first fixed plate and the first movable plate; the limiting device and the locking device are arranged in a locking or unlocking state;
when the locking device is locked, the limiting device is used for limiting the movement of the first movable plate relative to the first fixed plate.
In a preferred embodiment, the limiting device comprises a locking bolt and a nut, wherein the locking bolt is fixed on the edge of the first movable plate, and one end of the locking bolt penetrates through the edge of the first fixed plate;
the nut is fitted at one end of the locking bolt penetrating the edge of the first fixing plate.
In a preferred embodiment, the angle adjusting device comprises an arc-shaped groove arranged at one side of the second fixed plate and a bolt arranged on the second movable plate; the bolt is arranged in the arc-shaped groove and has a movement amount along the arc-shaped groove;
the radian of the arc-shaped groove is 10-95 degrees, and the latch is connected with a locking piece in a rotating mode and used for locking the latch at a specified radian position of the arc-shaped groove, so that the second movable plate rotates to a specified angle.
In a preferred embodiment, an angle dial is arranged on one side of the second fixing plate, which is close to the bending part, and the angle dial is arranged on the same side of the arc-shaped groove;
the angle of the angle dial is set at 10-95 degrees.
In a preferred embodiment, the first movable plate is provided with at least one pressing piece near the bending position; the movable plate is used for pressing down the first movable plate to be close to the first fixed plate or pressing down and abutting against the first fixed plate.
In a preferred embodiment, the fixing portion extends to two sides along the bending portion, and a hanging hole is formed in the hand-held portion on one side of the fixing portion.
In a preferred embodiment, the notches of the first fixed plate, the second fixed plate and the first movable plate are semicircular notches; the notch of the second movable plate is set to be a rectangular notch.
In summary, the present application includes the following beneficial effects:
1. the setting has fixed part and the movable part of buckling, when carrying out work piece edge cutting, can be with its one side and the fine laminating of work piece edge, through the angle modulation to the movable part, can be fine fix a position handheld cutting machine at a suitable angle, the gradient that cooperation work piece cutting place is suitable for.
2. Through the movable adjustment of the first movable plate, the cutting depth of the handheld cutting machine and the workpiece can be adjusted, and the cutting requirements of workpieces with different depths and different thicknesses are met.
3. Through the rotation quantity of the second movable plate, the cutting angle of the cutting head can be adjusted, and meanwhile, the angle adjusting device is configured, so that the angle can be intuitively adjusted, and the operation is simple and convenient.
4. The fixed part extends to be provided with the handheld part, so that the handheld part is convenient to take, the fixed part can be better attached and fixed on a workpiece when the workpiece is cut, the workpiece can be stably cut when the handheld cutting machine is moved, and the phenomenon of cutter clamping of a fly cutter is avoided.
5. The hanging hole is formed in the handheld portion on one side, the hanging mechanism can be hung, the dust collection pipeline of the dust collector can be hung in the hanging hole, fly ash generated by cutting is cleaned when cutting is achieved, and the cutting site is kept clean.
Drawings
FIG. 1 is a schematic view of a front perspective structure of an angle adjusting mechanism according to the present embodiment;
FIG. 2 is a schematic view of the back perspective of the angle adjusting mechanism of the present embodiment;
FIG. 3 is a side view showing the first movable plate of the angle adjusting mechanism of the present embodiment moved a certain distance;
fig. 4 is a side view of the initial position of the first movable plate of the angle adjusting mechanism of the present embodiment;
FIG. 5 is an assembly schematic diagram of the first fixed plate and the first movable plate according to the present embodiment;
FIG. 6 is a schematic view of the structure of the angle dial of the present embodiment;
FIG. 7 is an assembled perspective view of the angle adjusting mechanism and the handheld cutter according to the present embodiment;
fig. 8 is an assembled side view of the angle adjusting mechanism and the hand-held cutter of the present embodiment.
Reference numerals illustrate: 1. a fixing part; 11. a first fixing plate; 111. a locking member; 12. a second fixing plate; 13. a first opening; 14. a hand-held part; 15. a hanging hole; 2. a movable part; 21. a first movable plate; 211. a sliding groove; 212. a locking bolt; 213. a nut; 22. a second movable plate; 23. a second opening; 3. an angle adjusting device; 31. an arc-shaped groove; 32. a plug pin; 33. a locking member; 34. an angle dial; 4. a pressing member; 5. a hand held cutter; 51. a cutting head.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.
In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," configured to, "" engaged with, "" connected to, "and the like are to be construed broadly, and may be, for example," connected to, "wall-mounted," connected to, removably connected to, or integrally connected to, mechanically connected to, electrically connected to, directly connected to, or indirectly connected to, through an intermediary, and may be in communication with each other between two elements, as will be apparent to those of ordinary skill in the art, in view of the detailed description of the terms herein.
The present application is described in further detail below in conjunction with figures 1-8.
The embodiment of the application discloses an angle adjusting mechanism of a handheld cutter 5, which comprises a fixed part 1 with bending degree and a movable part 2, wherein the movable part 2 is overlapped above the fixed part 1; the fixed part 1 comprises a first fixed plate 11 and a second fixed plate 12, and the movable part 2 comprises a first movable plate 21 and a second movable plate 22; the first movable plate 21 has a displacement amount along the short side of the first fixed plate 11; the second movable plate 22 has a rotation amount with respect to the second fixed plate 12.
Wherein, the first movable plate 21 and the second movable plate 22 are hinged at a bending position, so that the second movable plate 22 can rotate along the hinged end. Specifically, the first fixing plate 11 and the second fixing plate 12 are fixedly connected, the first movable plate 21 and the second movable plate 22 are connected in a loose-leaf manner, the bending degree of the first fixing plate 11 and the second fixing plate 12 is set at 90 degrees, the first fixing plate 11 and the second fixing plate 12 can be better attached to the edge of a workpiece under the action of a right angle, and the cutting work of the handheld cutting machine 5 is stabilized.
In this embodiment, a notch is formed in the bending portion of the first fixing plate 11, the second fixing plate 12, the first movable plate 21 and the second movable plate 22; the notches of the first fixing plate 11 and the second fixing plate 12 are connected to form a first notch 13; the notches of the first movable plate 21 and the second movable plate 22 are continuously formed into a second notch 23; the first opening 13 is communicated with the second opening 23, and the first opening 13 and the second opening 23 are used for letting the cutting head 51 cut.
Specifically, the notches of the first fixed plate 11, the second fixed plate 12 and the first movable plate 21 are semicircular notches; the second movable plate 22 is used for installing the handheld cutter 5, and the cutting head 51 of the handheld cutter 5 is arranged in the opening, and because the handheld cutter 5 is installed on the second movable plate 22, the opening of the second movable plate 22 is set to be a rectangular opening, the installation of the cutting head 51 can be better abducted, the second movable plate 22 has an angle rotation amount, the setting of the rectangular opening can better abduct the angle adjustment of the cutting head 51, and the interference between the cutting head 51 and the second movable plate 22 during cutting is avoided.
In this embodiment, a locking device is disposed between the first fixed plate 11 and the first movable plate 21, for locking the relative positions of the first movable plate 21 and the first fixed plate 11. Specifically, the locking device includes a sliding groove 211 provided on the first movable plate 21 and a locking member 111 provided on the first fixed plate 11, and when the locking member 111 is unlocked, the locking member 111 moves back and forth along the sliding groove 211, so that the first movable plate 21 has a certain displacement; when the locking piece 111 is in the locking state, the locking piece 111 is locked in the sliding groove 211 to restrict the displacement of the first movable plate 21.
In this embodiment, in order to simplify the structure, the locking member 111 is used to adjust the bolt and the nut 213, when the first movable plate 21 moves, the nut 213 is first screwed to release the screwing of the bolt, at this time, the bolt is placed in the sliding groove 211 and can move back and forth along the sliding groove 211, and when the second movable plate 22 is fixed at a certain angle by moving the first movable plate 21, the distance between the second movable plate 22 and the second fixed plate 12 along the horizontal plane is adjusted, so as to adjust the depth of the workpiece at the time of cutting by the cutting head 51 of the handheld cutter 5. After the single adjustment to a proper interval, the nuts 213 are tightly pressed on the end surfaces of the sliding grooves 211 by screwing the nuts 213, and the bolts are tightly pressed at the designated positions of the sliding grooves 211, thereby realizing the fixation of the first movable plate 21.
In this embodiment, for better installation of the fixed part 1 and the movable part 2, a border is provided at one end of the first fixed plate 11 and the first movable plate 21 away from the bending position, and a limiting device is provided at the border of the first fixed plate 11 and the first movable plate 21; the limiting device comprises a locking bolt 212 and a nut 213, wherein the locking bolt 212 is fixed on the edge of the first movable plate 21, one end of the locking bolt penetrates through the edge of the first fixed plate 11, and one end of the locking bolt 212 penetrating through the edge of the first fixed plate 11 is matched with the nut 213. The fixed part 1 is stacked on the movable part 2, and is assembled by a stopper, and the movable part 2 is assembled on the fixed part 1 by locking the locking bolt 212 and the nut 213.
For the attachment of the fixed part 1 and the movable part 2, the movable part 2 is first assembled to the fixed part 1 by locking with the locking bolt 212 and the nut 213, and the first movable plate 21 of the movable part 2 is further pressed against the end surface of the first fixed plate 11 by the locking piece 111 of the locking device.
Specifically, stop device plays to fix first fly leaf 21 on first fixed plate 11, stop device with locking device sets up to locking or unblock state together, when needs remove first fly leaf 21, releases stop device and locking device's locking state earlier, carries out the removal of first fly leaf 21 again, and stop device plays the spacing to the removal of first fly leaf 21 simultaneously, avoids first fly leaf 21 too to break away from first fixed plate 11, leads to first fly leaf 21 and first fixed plate 11 to take place the phenomenon of head weight foot light, leads to the mechanism to turn on one's side and causes the processing accident.
Meanwhile, the locking piece is fixed on the first fixed plate 11, the movement of the first movable plate 21 is further limited by the groove length of the sliding groove 211, and the groove length of the sliding groove 211 and the length of the locking bolt 212 are smaller than or equal to one half of the length of the short side of the first fixed plate 11.
In the present embodiment, the angle adjustment of the second movable plate 22 by the angle adjustment device 3 is maintained in a state of a specified angle and the angle adjustment of the second movable plate 22. The angle adjusting device 3 comprises an arc-shaped groove 31 arranged on one side of the second fixed plate 12 and a bolt 32 arranged on the second movable plate 22; the bolt 32 is arranged in the arc-shaped groove 31 and has a moving amount along the arc-shaped groove 31; the arc of the arc-shaped groove 31 is set at 10-95 degrees, and the latch 32 is screwed with a locking piece 33 for locking the latch 32 at a specified arc position of the arc-shaped groove 31 so as to enable the second movable plate 22 to rotate to a specified angle.
Specifically, the bolt 32 is provided with threads, the locking member 33 is provided as a nut 213, and the bolt 32 is locked at a specified angle position of the arc-shaped slot 31 by matching the nut 213 with the threads, so as to lock the second movable plate 22 at a specified angle.
The hand-held cutting machine 5 is fixed on the second movable plate 22, the hand-held cutting machine 5 can be fixed at a designated angle by adjusting the angle of the second movable plate 22, and the angle of the second movable plate 22 is adjusted under the condition that the fixed part 1 is attached to a workpiece at right angles, so that the cutting head 51 forms an angle adjustment of 0-90 degrees with a vertical surface, and the inclined cutting of the workpiece is facilitated.
Specifically, for better angle adjustment, an angle dial 34 is disposed on one side of the second fixing plate 12 near the bending position, the angle dial 34 is disposed on the same side as the arc-shaped groove 31, and the angle of the angle dial 34 is set at 10 ° -95 °, so that the inclination angle can be adjusted more intuitively.
In order to better implement the technical scheme of the embodiment, in the embodiment, the two angle adjusting devices 3, the two locking devices and the two limiting devices are symmetrically arranged, so that the control of angle adjustment can be stabilized.
In this embodiment, the first movable plate 21 is symmetrically disposed near the bending position as two pressing members 4; when the first movable plate 21 moves to the minimum distance between the second movable plate 22 and the second fixed plate 12, when the cutting head 51 cuts a workpiece, the cutting force of the cutting head 21 acts on the second movable plate 22, so that the first movable plate 21 is close to the bending position and further acts on the second movable plate 22 to lift up, the second movable plate 22 is slightly swayed when cutting due to the lifting of the bending position, the cutting head 51 is easily caused to cut and clip or fly cutter, and the cutting is unstable, so that in the embodiment, the pressing piece 4 is arranged at the position, close to the bending position, of the first movable plate 21, the side of the first movable plate 21 at the bending position is pressed on the first fixed plate 11, the lifting phenomenon of the end of the first movable plate 21 due to the acting force when cutting is avoided, and the fixing of the hand cutter 5 of the second movable plate 22 is further stabilized when cutting. The compressing piece 4 is pressed down and screwed by a screw piece, and a butterfly type rotating part is arranged at the tail end of the compressing piece 4, so that manual screwing and compressing are facilitated.
In this embodiment, the fixing portion 1 extends to two sides along the bending portion and is provided with the handheld portion 14, the setting of the handheld portion 14 is consistent with the bending portion of the fixing portion 1, the setting of the handheld portion 14 is convenient to take, when the workpiece is cut, the fixing portion 1 can be better attached and fixed on the workpiece, and when the handheld cutting machine 5 is moved, the workpiece can be cut stably, and the phenomenon of fly cutter clamping is avoided.
Further, a plurality of hanging holes 15 are formed in the handheld part 14 on one side of the handheld part, so that the hanging mechanism can be hung, dust collection pipelines of a dust collector can be hung in the hanging holes 15, fly ash generated by cutting is cleaned at the same time when cutting is achieved, and the cleanliness of a cutting site is maintained.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. An angle adjustment mechanism of a handheld cutting machine, which is characterized in that: the bending degree fixing device comprises a fixing part and a movable part, wherein the movable part is overlapped above the fixing part; the fixed part comprises a first fixed plate and a second fixed plate, and the movable part comprises a first movable plate and a second movable plate; the first movable plate is provided with a displacement amount along the short side of the first fixed plate; the second movable plate has a rotation amount relative to the second fixed plate;
the first movable plate and the second movable plate are hinged at a bending position, and a notch is formed in the bending position of the first fixed plate, the second fixed plate, the first movable plate and the second movable plate; the notches of the first fixing plate and the second fixing plate are connected to form a first notch; the notches of the first movable plate and the second movable plate are connected to form a second notch; the first opening is communicated with the second opening;
an angle adjusting device is arranged between the second fixed plate and the second movable plate, the second movable plate is used for installing the handheld cutting machine, and the cutting head of the handheld cutting machine is arranged in the opening.
2. The angle adjustment mechanism of a hand held cutter as defined in claim 1, wherein: and a locking device is arranged between the first fixed plate and the first movable plate and used for locking the relative positions of the first movable plate and the first fixed plate.
3. The angle adjustment mechanism of a hand held cutter as defined in claim 2, wherein: the locking device comprises a sliding groove arranged on the first movable plate and a locking piece arranged on the first fixed plate;
when the locking piece is unlocked, the locking piece moves back and forth along the sliding groove, so that the first movable plate has a certain displacement;
when the locking piece is in locking, the locking piece is locked in the sliding groove so as to limit the displacement of the first movable plate.
4. The angle adjustment mechanism of a hand held cutter as defined in claim 2, wherein: the first fixing plate and one end of the first movable plate, which are far away from the bending part, are provided with edges, and limit devices are arranged at the edges of the first fixing plate and the first movable plate; the limiting device and the locking device are arranged in a locking or unlocking state;
when the locking device is locked, the limiting device is used for limiting the movement of the first movable plate relative to the first fixed plate.
5. The angle adjustment mechanism of a hand held cutter as defined in claim 4, wherein: the limiting device comprises a locking bolt and a nut, wherein the locking bolt is fixed on the edge of the first movable plate, and one end of the locking bolt penetrates through the edge of the first fixed plate;
the nut is fitted at one end of the locking bolt penetrating the edge of the first fixing plate.
6. The angle adjustment mechanism of a hand held cutter as defined in claim 1, wherein: the angle adjusting device comprises an arc-shaped groove arranged on one side of the second fixed plate and a bolt arranged on the second movable plate; the bolt is arranged in the arc-shaped groove and has a movement amount along the arc-shaped groove;
the radian of the arc-shaped groove is 10-95 degrees, and the latch is connected with a locking piece in a rotating mode and used for locking the latch at a specified radian position of the arc-shaped groove, so that the second movable plate rotates to a specified angle.
7. The angle adjustment mechanism of a hand held cutter as defined in claim 6, wherein: an angle dial is arranged on one side of the second fixing plate, which is close to the bending part, and the angle dial is arranged on the same side of the arc-shaped groove;
the angle of the angle dial is set at 10-95 degrees.
8. The angle adjustment mechanism of a hand held cutter as defined in claim 1, wherein: at least one pressing piece is arranged at the position, close to the bending position, of the first movable plate; the movable plate is used for pressing down the first movable plate to be close to the first fixed plate or pressing down and abutting against the first fixed plate.
9. The angle adjustment mechanism of a hand held cutter as defined in claim 1, wherein: the fixing part is provided with a holding part extending to two sides along the bending part, and a hanging hole is arranged on the holding part at one side.
10. The angle adjustment mechanism of a hand held cutter as defined in claim 1, wherein: the notches of the first fixed plate, the second fixed plate and the first movable plate are semicircular notches; the notch of the second movable plate is set to be a rectangular notch.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202322249936.5U CN220560587U (en) | 2023-08-21 | 2023-08-21 | Angle adjusting mechanism of handheld cutting machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202322249936.5U CN220560587U (en) | 2023-08-21 | 2023-08-21 | Angle adjusting mechanism of handheld cutting machine |
Publications (1)
Publication Number | Publication Date |
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CN220560587U true CN220560587U (en) | 2024-03-08 |
Family
ID=90102641
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CN202322249936.5U Active CN220560587U (en) | 2023-08-21 | 2023-08-21 | Angle adjusting mechanism of handheld cutting machine |
Country Status (1)
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CN (1) | CN220560587U (en) |
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2023
- 2023-08-21 CN CN202322249936.5U patent/CN220560587U/en active Active
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