Cutting device

Abstract

A cutting device comprises a shell, a motor assembly contained in the shell and a switch assembly installed on the shell, the switch assembly comprises a trigger switch installed on the shell and electrically connected to the motor assembly and a trigger for a user to press, the trigger is pressed to trigger the trigger switch, and then the motor assembly is started; the cutting device comprises a locking mechanism movably connected to the shell, the locking mechanism comprises a locking connecting rod pivoted relative to the shell and a locking shifting button abutting against the locking connecting rod, and the locking connecting rod comprises a first position abutting against the trigger so that the trigger cannot press the locking connecting rod and a second position keeping the trigger state of the trigger switch. According to the arrangement, the self-locking and anti-self-locking functions of the switch assembly can be realized by pressing the locking toggle button; in the first position, the trigger cannot be pressed to start the cutting device, and in the second position, the cutting device can continuously operate without continuously pressing the trigger.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting devices, and particularly relates to a cutting device with a locking mechanism. Background Art

[0002] Cutting devices are mainly used for cutting non-ferrous metal profiles such as aluminum metal, as well as materials such as wood, fiberboard, and plastic plates. Currently, general cutting devices on the market usually have an anti-self-locking structure at the switch. This anti-self-locking structure is arranged in linkage with the switch. Without pressing this anti-self-locking structure, the operator cannot directly start the cutting device, ensuring that the operator will not be in danger due to accidental startup of the cutting device. However, after the cutting device is normally started, the operator still needs to continuously press the switch to keep the machine running normally, which is inconvenient to operate.

[0003] In view of this, it is indeed necessary to provide an improved cutting device to overcome the defects of the prior art. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a cutting device that simultaneously has self-locking and anti-self-locking functions.

[0005] The technical solution adopted by the utility model to solve the problems of the prior art is: a cutting device, including a housing, a motor assembly housed in the housing, and a switch assembly installed on the housing. The switch assembly includes a trigger switch installed on the housing and electrically connected to the motor assembly, and a trigger for the user to press. Pressing the trigger triggers the trigger switch, thereby starting the motor assembly; the cutting device includes a locking mechanism movably connected to the housing. The locking mechanism includes a locking link pivotally connected to the housing and a locking knob for pushing the locking link. The locking link includes a first position for abutting against the trigger to prevent the trigger from being pressed and a second position for maintaining the triggered state of the trigger switch.

[0006] A further improvement is: the housing includes a holding portion, and both the switch assembly and the locking mechanism are installed on the holding portion; the locking mechanism includes an elastic member connected to the second end of the locking link, and the elastic member biases the locking link so that the locking link is in the first position.

[0007] A further improvement is: the holding portion includes a pivot shaft protruding from the inner wall. The locking link includes a pivot hole sleeved on the pivot shaft. Pressing the locking knob causes the locking link to rotate around the pivot shaft.

[0008] A further improvement is as follows: the trigger has a connecting rod facing the locking link and cooperating with the locking link, the locking link includes a limit block abutting against the connecting rod, and in the first position, the end of the limit block abuts against the end of the connecting rod, and the trigger cannot be pressed.

[0009] A further improved solution is: the locking button is located at the first end of the locking link, and when the locking button is pressed, the end of the locking button pushes against the first end and drives the locking link to rotate, the limit block disengages from the connecting rod, and the trigger is pressed to start the motor assembly.

[0010] A further improved solution is: the locking link includes a hook protruding from the limit block, the connecting rod is provided with a locking groove matching with the hook, and the hook is clamped in the locking groove to keep the locking link in the second position.

[0011] A further improved solution is: the other end of the elastic member is connected to the holding portion, and in the second position, the elastic member is in a compressed state, and the elastic force of the elastic member keeps the locking link in the second position.

[0012] A further improvement is: in the second position, pressing the locking button drives the locking link to rotate, the hook disengages from the connecting rod, the trigger is released to release the trigger state of the trigger switch, and the locking link rotates from the second position to the first position under the action of the elastic force of the elastic member.

[0013] A further improved solution is: the gripping portion includes a receiving portion that partially receives the locking dial button, and the locking dial button is pressed to move the locking dial button in the receiving portion.

[0014] A further improved solution is: the elastic member and the limit block are located on both sides of the second end, and when the locking link rotates from the first position to the second position, the second end compresses the elastic member.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the cutting device includes a locking mechanism movably connected to the housing, the locking mechanism includes a locking link pivoted relative to the housing and a locking dial button that pushes the locking link, the locking link includes a first position for holding the trigger so that the trigger cannot be pressed and a second position for maintaining the trigger state of the trigger switch. In this way, the self-locking and anti-self-locking functions of the switch assembly can be achieved by pressing the locking dial button; in the first position, the trigger cannot be pressed to start the cutting device, and in the second position, the cutting device can continue to operate without continuously pressing the trigger. [Drawings]

[0016] The following further elaborates on the specific embodiments of the present utility model in conjunction with the accompanying drawings:

[0017] Figure 1 is a three-dimensional schematic diagram of the cutting device of the present utility model;

[0018] Figure 2 is Figure 1 a three-dimensional schematic diagram of another angle of the cutting device shown;

[0019] Figure 3 is Figure 2 a partial structural schematic diagram of the cutting device shown;

[0020] Figure 4 is Figure 3 the first partial enlarged view of the cutting device shown;

[0021] Figure 5 is Figure 3 the second partial enlarged view of the cutting device shown.

[0022] The meanings of the reference numerals in the figure:

[0023] Cutting device 100, cutting main body 200

[0024] Base 1, clamping device 10

[0025] Clamping seat 101, lead screw 102

[0026] Adjusting handle 103, clamping plate 104

[0027] Fixed plate 105, frame 2

[0028] Pivot shaft 20, torsion spring 21

[0029] Locking pin 22, support arm 3

[0030] Housing 4, holding part 40

[0031] Receiving part 401, switch assembly 41

[0032] Trigger 410, connecting rod 411

[0033] Trigger switch 412, locking groove 413

[0034] Pivot shaft 42, locking mechanism 5

[0035] Locking knob 50, locking link 51

[0036] First end 510, second end 511

[0037] Limit block 512, hook 513

[0038] Pivoting hole 514, elastic member 52

[0039] Cutting disc 6, shield assembly 7 [Specific embodiments]

[0040] The terms used in the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. For example, the terms indicating orientation or positional relationship such as "upper", "lower", "front", "rear", etc. are only based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model.

[0041] Please refer to Figures 1 to 5 As shown, a cutting device 100 according to the present utility model is provided. The cutting device 100 includes a base 1 and a cutting main body 200 supported on the base 1. The cutting main body 200 is supported on the base 1 in a manner that can swing up and down to enable the cutting device 100 to cut a workpiece to be processed (not shown).

[0042] The cutting device 100 includes a frame 2 fixed to the upper surface of the base 1. The frame 2 is provided with a pivot shaft 20 penetrating through the frame 2 in the transverse direction and a torsion spring 21 sleeved on the outer periphery of the pivot shaft 20. The cutting main body 200 is provided with a support arm 3 connected to the frame 2. The support arm 3 is mounted to the frame 2 through the pivot shaft 20, so that the support arm 3 supports the cutting main body 200 to perform an up-and-down swinging action. The elastic force of the torsion spring 21 enables the cutting main body 200 to be in a standby position away from the upper side of the base 1 when the cutting device 100 is in a state to be cut, improving the safety of operation.

[0043] The cutting main body 200 includes a housing 4, a motor assembly (not shown) received in the housing 4, a transmission assembly (not shown) driven by the motor assembly and located at the axial front end of the motor assembly, a cutting disc 6 connected to the axial front end of the transmission assembly and driven by the transmission assembly to rotate, and a shield assembly 7 at least partially covering the cutting disc 6. The motor assembly drives the cutting disc 6 to rotate through the transmission assembly and cut the workpiece to be processed, and the shield assembly 7 covers the outer periphery of the cutting disc 6 to prevent injury to the operator during the cutting process.

[0044] The housing 4 includes a gripping portion 40 located at the upper end and suitable for the operator to grip and a switch assembly 40 located on the gripping portion 40. The switch assembly 40 is used to control the start and stop of the cutting device 100.

[0045] Please refer to Figure 1 and Figure 2 As shown, the base 1 is provided with a clamping device 10 on the upper surface and a guide rail (not shown) that penetrates the upper surface and extends longitudinally. The clamping device 10 is used to clamp the workpiece to be processed. The clamping device 10 includes a fixing plate 105 and a clamping plate 104 on the upper surface of the base 1. The clamping plate 104 is located at the relative front end of the fixing plate 105. The fixing plate 105 is connected to the guide rail and can move within the guide rail. With such a setting, the longitudinal position of the fixing plate 105 on the base 1 can be adjusted in a timely manner according to the cutting requirements, and the adjustable positions are diverse. The workpiece to be processed is placed between the fixing plate 105 and the clamping plate 104, so that the workpiece to be processed is clamped and fixed, facilitating the cutting operation.

[0046] Furthermore, the clamping device 10 includes a clamping seat 101 at the longitudinal front end of the base 1 and a lead screw 102 extending longitudinally. The clamping seat 101 is fixed to the upper surface of the base 1. The longitudinal front end of the lead screw 102 passes through the clamping seat 104, and the clamping plate 104 is connected to the longitudinal rear end of the lead screw 102. An adjusting handle 103 is installed at the front end of the lead screw 102. The adjusting handle 103 passes through the longitudinal front end of the lead screw 102. When the adjusting handle 103 is rotated, the lead screw 102 rotates together, causing the lead screw 102 to slide within the clamping seat 101, thereby driving the clamping plate 104 to move within the guide rail to clamp or release the workpiece to be processed between the fixing plate 105 and the clamping plate 104.

[0047] Please refer to Figures 3 to 5 As shown, the cutting device 100 includes a locking mechanism 5 movably connected to the housing 4. The locking mechanism 5 includes a locking link 51 pivotable relative to the housing 4 and a locking button 50 that pushes against the locking link 51. The switch assembly 41 includes a trigger switch 412 installed on the housing 4 and electrically connected to the motor assembly and a trigger 410 for the operator to press. Pressing the trigger 410 triggers the trigger switch 412, thereby starting the motor assembly. Both the switch assembly 41 and the locking mechanism 5 are installed on the holding portion 40.

[0048] Further, the locking link 51 includes a first position that abuts against the trigger 410 to prevent the trigger 410 from being pressed and a second position that maintains the triggered state of the trigger switch 412. The locking knob 50 is located at the first end 510 of the locking link 51. The locking knob 50 pushes against the first end 510 to cause the locking link 51 to abut against the trigger 410, thereby placing the trigger 410 in the first position or maintaining it in the second position. The first position is the anti-self-locking state of the switch assembly 41, and the second position is the self-locking state of the switch assembly 41. Specifically, in the first position, the trigger 410 is locked and cannot be pressed to activate the cutting device 100; in the second position, the trigger 410 is held without the operator pressing it to continuously operate the cutting device 100.

[0049] The holding portion 40 includes a pivot shaft 42 protruding from the inner wall. The locking link 51 includes a pivot hole 514 sleeved on the pivot shaft 42. Press the locking knob 50 to cause the locking link 51 to rotate around the pivot shaft 42, thereby causing the locking link 51 to abut against or disengage from the trigger 410.

[0050] The trigger 410 has a connecting rod 411 facing the locking link 51 and cooperating with the locking link 51. The locking link 51 includes a limiting block 512 abutting against the connecting rod 411. In the first position, the end of the limiting block 512 abuts against the end of the connecting rod 411, and the trigger 410 cannot be pressed to trigger the trigger switch 412. Press the locking knob 50, and the end of the locking knob 50 pushes against the first end 510 and drives the locking link 51 to rotate. The limiting block 512 disengages from the connecting rod 411, and the trigger 410 is released to allow the operator to press it, thereby activating the cutting device 100.

[0051] The locking link 51 includes a hook 513 protruding from the limiting block 512. The connecting rod 411 is provided with a locking groove 413 cooperating with the hook 513. The hook 513 is latched in the locking groove 413 to hold the locking link 51 in the second position. In the second position, the trigger 410 continuously triggers the trigger switch 412, and the operator does not need to press the trigger 410 while the cutting device 100 keeps running continuously.

[0052] The locking mechanism 5 includes an elastic member 52 connected to the second end 511 of the locking link 51. The other end of the elastic member 52 is connected to the holding portion 40. In the second position, the elastic member 52 is in a compressed state.

[0053] In the second position, the locking button 50 is continued to be pressed and the locking link 51 is driven to rotate, the hook 513 is disengaged from the connecting rod 411, the trigger 410 is released to release the trigger state of the trigger switch 412, and the locking link 51 is rotated from the second position to the first position under the action of the elastic force of the elastic member 52, thereby making the limit block 512 abut against the outer wall of the connecting rod 411 again to keep the trigger 410 in the first position.

[0054] Further, the grip portion 40 includes a receiving portion 401 that partially receives the locking button 50, and the locking button 50 is pressed to move the locking button 50 in the receiving portion 401. The elastic member 52 and the limit block 512 are located on both sides of the second end 511, and when the locking link 51 rotates from the first position to the second position, the second end 511 compresses the elastic member 52. In this embodiment, the elastic member 52 is a spring.

[0055] In this embodiment, the cutting device 100 includes a locking mechanism 5 movably connected to the housing 4, the locking mechanism 5 includes the locking link 51 pivoted relative to the housing 4 and the locking dial 50 pushing the locking link 51, the locking link 51 includes the first position of abutting the trigger 410 so that the trigger 410 cannot be pressed and the second position of maintaining the trigger state of the trigger switch 412. In this way, the self-locking and anti-self-locking functions of the switch assembly 41 can be achieved by pressing the locking dial 50; in the first position, the trigger 410 cannot be pressed to start the cutting device 100, and in the second position, the cutting device 100 can be continuously operated without continuously pressing the trigger 410.

[0056] The present invention is not limited to the above specific embodiments. A person skilled in the art can easily understand that there are many alternatives to the cutting device of the present invention without departing from the principle and scope of the present invention. The protection scope of the present invention shall be subject to the content of the claims.

Claims

1. A cutting device, comprising a housing, a motor assembly contained in the housing, and a switch assembly mounted on the housing, wherein the switch assembly comprises a trigger switch mounted on the housing and electrically connected to the motor assembly, and a trigger for a user to press, wherein the trigger is pressed to trigger the trigger switch, thereby starting the motor assembly; characterized in that: The cutting device includes a locking mechanism movably connected to the shell, the locking mechanism includes a locking link pivoted relative to the shell and a locking button that pushes the locking link, the locking link includes a first position that presses the trigger so that the trigger cannot be pressed and a second position that maintains the trigger state of the trigger switch.

2. The cutting device according to claim 1, characterized in that: The housing includes a gripping portion, and the switch assembly and the locking mechanism are both mounted to the gripping portion; the locking mechanism includes an elastic member connected to the second end of the locking link, and the elastic member biases the locking link so that the locking link is in the first position.

3. The cutting device according to claim 2, characterized in that: The gripping portion comprises a pivot shaft protruding from the inner wall, the locking link comprises a pivot hole sleeved on the pivot shaft, and the locking dial button is pressed to rotate the locking link around the pivot shaft.

4. The cutting device according to claim 3, characterized in that: The trigger has a connecting rod facing the locking link and cooperating with the locking link, and the locking link includes a limit block abutting against the connecting rod. In the first position, the end of the limit block abuts against the end of the connecting rod, and the trigger cannot be pressed.

5. The cutting device according to claim 4, characterized in that: The locking button is located at the first end of the locking link. When the locking button is pressed, the end of the locking button pushes against the first end and drives the locking link to rotate, the limit block is disengaged from the connecting rod, and the trigger is pressed to start the motor assembly.

6. The cutting device according to claim 5, characterized in that: The locking link comprises a hook protruding from the limiting block, the connecting rod is provided with a locking groove matched with the hook, and the hook is clamped in the locking groove to keep the locking link in the second position.

7. The cutting device according to claim 6, characterized in that: The other end of the elastic member is connected to the holding portion. In the second position, the elastic member is in a compressed state, and the elastic force of the elastic member keeps the locking link in the second position.

8. The cutting device according to claim 7, characterized in that: In the second position, pressing the locking button drives the locking link to rotate, the hook disengages from the connecting rod, the trigger is released to release the trigger state of the trigger switch, and the locking link rotates from the second position to the first position under the action of the elastic force of the elastic member.

9. The cutting device according to claim 3, characterized in that: The gripping portion includes a receiving portion for partially receiving the locking dial button, and the locking dial button is pressed to move the locking dial button in the receiving portion.

10. The cutting device according to claim 7, characterized in that: The elastic member and the limiting block are located on both sides of the second end. When the locking link rotates from the first position to the second position, the second end compresses the elastic member.

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