Double-gear-shifting control electric tool

Abstract

The utility model relates to the technical field of electric tools, in particular to a double-gear-shifting control electric tool which comprises a machine shell. The motor provides driving force for the electric tool; the first gear shifting mechanism is located above the machine shell and used for adjusting the output rotating speed of the motor. The second gear shifting mechanism is located below the machine shell and used for adjusting the output rotating speed of the motor. And a control module is arranged in the central processing unit. The gear shifting mechanism has the advantages that by combining mechanical adjustment of the first gear shifting mechanism and electronic control of the second gear shifting mechanism, diversified adjustment of the output rotating speed of the motor is achieved, various complex operation environments and machining requirements of different materials can be easily met, and the adaptability and flexibility of the tool are greatly improved; a user can quickly adjust the rotating speed to the most appropriate rotating speed according to a specific working scene, the rotating speed can be reduced and the torque can be increased when high-torque operation is needed, the rotating speed can also be increased during high-speed operation, and therefore the working efficiency is remarkably improved while the working quality is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of electric tools, and in particular to an electric tool with dual shift control. Background Art

[0002] In the field of power tools, with the continuous advancement of technology and the diversification of application needs, users have put forward higher requirements for the personalization and flexibility of tool performance. Most traditional power tools use a single speed adjustment mechanism, which to a certain extent limits their adaptability and work efficiency in complex working environments. Especially when it is necessary to frequently change the working object or handle tasks of different materials, single-speed power tools often cannot meet the needs of efficient and precise operation.

[0003] In this regard, the present application proposes an electric tool with dual shift control to solve this problem. Summary of the invention

[0004] The purpose of this application is to solve at least one of the technical deficiencies.

[0005] To this end, one purpose of the present application is to propose an electric tool with dual shift control to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0006] In order to achieve the above-mentioned objectives, an embodiment of one aspect of the present application provides an electric tool with dual gear shift control, comprising: a housing; a motor, providing driving force for the electric tool; a first gear shift mechanism, located above the housing, for adjusting the output speed of the motor; a second gear shift mechanism, located below the housing, for adjusting the output speed of the motor; a central processing unit, which contains a control module for receiving control instructions from the second gear shift mechanism to the motor; the first gear shift mechanism can be used simultaneously with the second gear shift mechanism to match different output speeds.

[0007] Preferably, any of the above schemes adopts a mechanical adjustment method, including: a shift plate for manual operation; a gear, one end of which is connected to the motor output shaft through a coupling; a gear ring, which can be disengaged from the gear, and the diameter of the gear ring is larger than the diameter of the gear; when the gear and the gear ring are meshed, the gear speed will decrease and the torque will increase accordingly; when the gear and the gear ring are disengaged, the gear speed will increase and the torque will decrease accordingly.

[0008] Preferably, any of the above schemes is that the first shift mechanism further includes: a mounting cylinder, the interior of which is rotatably connected to the gear ring; a shift fork, rotatably arranged on the outside of the mounting cylinder via a fixed rod; a fixed ring, mounted on the shift fork, the inner recess on the fixed ring being rotatably connected to the convex ring at one end of the gear; the movement of the shift fork drives the fixed ring to realize the state switching between the gear and the gear ring.

[0009] Preferably, any of the above schemes is that a convex plate is fixedly provided at one end of the shift plate, and a first groove and a second groove are formed on the convex plate, the first groove is used to install the shift fork; an elastic rod is installed in the second groove, and tips are provided at both ends of the elastic rod; two baffles are fixedly provided at both ends of the shift plate, the angle between every two adjacent but non-contacting baffles is a right angle, and every two adjacent baffles are in contact with the tip of the elastic rod to limit the elastic rod.

[0010] Preferably, any of the above schemes is that a guide groove is provided on the mounting tube, one end of the shift fork passes through the guide groove, and the guide groove is used to guide and limit the shift fork; a protrusion is installed on the outer wall of the mounting tube, which is above the guide groove, and both ends of the protrusion are inclined surfaces for locking the position of the shift fork.

[0011] Preferably, any of the above solutions has a locking groove in the housing for cooperating with a tip on the elastic rod to achieve position locking of the shift plate.

[0012] Preferably, any of the above schemes adopts an electronic adjustment method, including: a panel installed on the casing; a pressing block installed on the panel through an elastic plate, and a driven rod is installed at the bottom of the pressing block; a trigger switch is installed on the central processing unit, and the top is in contact with the driven rod; the pressing block drives the driven rod to press the trigger switch to achieve output speed adjustment of the motor.

[0013] Compared with the prior art, the advantages and beneficial effects of this application are:

[0014] 1. By combining the mechanical adjustment of the first shift mechanism with the electronic control of the second shift mechanism, the diversified adjustment of the motor output speed is realized, which can easily cope with various complex working environments and processing requirements of different materials, greatly enhancing the adaptability and flexibility of the tool.

[0015] 2. Users can quickly adjust to the most appropriate speed according to the specific working scenario. They can reduce the speed and increase the torque when large torque is required, and increase the speed when working at high speed, thereby significantly improving work efficiency while ensuring the quality of the work.

[0016] 3. The manual operation of the mechanical shift mechanism is intuitive and convenient, while the electronic control provides preset modes and precise adjustment capabilities. The combination of the two makes operation easier and reduces the operator's learning cost and operation time.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a three-dimensional schematic diagram according to an embodiment of the present application;

[0020] Figure 2 It is a partial schematic diagram according to an embodiment of the present application;

[0021] Figure 3 It is a partial cross-sectional schematic diagram according to an embodiment of the present application;

[0022] Figure 4 According to the embodiment of the present application Figure 3 The enlarged schematic diagram at A in the middle;

[0023] Figure 5 According to the embodiment of the present application Figure 3 The enlarged schematic diagram of point B in the middle;

[0024] Figure 6 A top cross-sectional view of a casing according to an embodiment of the present application;

[0025] Figure 7 This is a schematic diagram of the fork connection according to an embodiment of the present application;

[0026] Figure 8 This is a schematic diagram of elastic rod connection according to an embodiment of the present application;

[0027] Fig. 9 It is a cross-sectional schematic diagram of the installation tube according to the embodiment of the present application;

[0028] Fig.10 Schematic diagram of trigger switch connection according to an embodiment of the present application.

[0029] In the figure: 1, housing, 101, locking groove, 2, motor, 3, central processing unit, 4, shift plate, 401, convex plate, 402, baffle, 5, gear, 6, gear ring, 7, mounting cylinder, 701, convex block, 8, shift fork, 9, fixing ring, 10, elastic rod, 11, panel, 12, pressing block, 13, driven rod, 14, trigger switch. DETAILED DESCRIPTION

[0030] like Figures 1 to 10 As shown, a dual-shift controlled electric tool comprises:

[0031] Housing 1;

[0032] Motor 2, providing driving force for the electric tool;

[0033] A first shift mechanism, located above the housing 1, for adjusting the output speed of the motor 2;

[0034] The second shift mechanism is located below the housing 1 and is used to adjust the output speed of the motor 2;

[0035] A central processing unit 3, which includes a control module, for receiving a control instruction from the second shift mechanism to the motor 2;

[0036] The first shift mechanism can be used together with the second shift mechanism to match different output speeds.

[0037] Furthermore, the first shift mechanism adopts a mechanical adjustment method, including:

[0038] A dial plate 4, a contact member for manual operation;

[0039] Gear 5, one end of which is connected to the output shaft of motor 2 through a coupling, and the other end of which is connected to the head transmission rod through a coupling;

[0040] a gear ring 6, which can be disengaged from the gear 5, and the diameter of the gear ring 6 is larger than the diameter of the gear 5;

[0041] Since the diameter of the gear ring 6 is greater than the diameter of the gear 5, when the gear 5 and the gear ring 6 are meshed, the speed of the gear 5 will decrease and the torque will increase accordingly. Similarly, when the gear 5 and the gear ring 6 are disengaged, the speed of the gear 5 will increase and the torque will decrease accordingly.

[0042] Further, such as Figures 7 to 9 As shown, the first shift mechanism also includes:

[0043] The mounting cylinder 7, the interior of which is rotatably connected to the gear ring 6;

[0044] The shift fork 8 is rotatably arranged on the outside of the mounting tube 7 through a fixing rod, and the fixing rod provides support and limit for the shift fork 8 so that the shift fork 8 can rotate around the rod;

[0045] The fixing ring 9 is mounted on the shift fork 8 , and the inner concave portion of the fixing ring 9 is rotatably connected to the convex ring at one end of the gear 5 .

[0046] Specifically, a convex plate 401 is fixedly provided at one end of the shift plate 4, and a first groove and a second groove are provided on the convex plate 401. The first groove is used to install the shift fork 8, and an elastic rod 10 is installed in the second groove. Tips are provided at both ends of the elastic rod 10, and two baffles 402 are fixedly provided at both ends of the shift plate 4. The angle between each two adjacent but non-contacting baffles 402 is a right angle, and each two adjacent baffles 402 are in contact with the tip of the elastic rod 10 to limit the elastic rod 10. A guide groove is provided on the mounting tube 7, and one end of the shift fork 8 passes through the guide groove. The guide groove is used to guide and limit the shift fork 8. A convex block 701 is installed on the outer wall of the mounting tube 7, which is above the guide groove. Both ends of the convex block 701 are inclined surfaces for locking the position of the shift fork 8.

[0047] The operating plate 4 drives the shift fork 8 to move under the limit of the guide groove and the fixed rod, and drives the fixed ring 9 to switch the state (engagement or disengagement) between the drive gear 5 and the gear ring 6;

[0048] When the gear 5 is in meshing state with the gear ring 6, it is downshifting, i.e. reducing the output speed;

[0049] When the gear 5 and the gear ring 6 are in a disengaged state, there is no resistance, that is, the output speed of the motor 2 is not affected.

[0050] Furthermore, a locking groove 101 is provided in the housing for cooperating with the tip of the elastic rod 10 to achieve position locking of the shift plate 4 .

[0051] Specifically, there are two locking grooves 101 to match the locking of the gear 5 and the gear ring 6 in two states.

[0052] Further, such as Fig.10 As shown, the second shift mechanism adopts an electronic adjustment method, including:

[0053] A panel 11 is mounted on the housing 1;

[0054] A pressing block 12 is mounted on the panel 11 through an elastic plate, and a driven rod 13 is mounted at the bottom of the pressing block 12;

[0055] A trigger switch 14 is mounted on the central processing unit 3, and the top thereof contacts the driven rod 13. The trigger switch is a push-type switch;

[0056] The pressing block 12 drives the driven rod 13 to press the trigger switch 14 to adjust the output speed of the motor 2 .

[0057] Specifically, the number of each component in the second gear shift mechanism is two, one group is used to increase the gear position, and the other group is used to decrease the gear position.

[0058] A dual-shift controlled electric tool, the working principle is as follows:

[0059] 1); The output speed of motor 2 can be adjusted according to the actual practical situation:

[0060] The following combinations are possible (the second shift mechanism is set to have at least but not limited to two gears: gear A and gear B, where gear A is smaller than gear B):

[0061] 1: The A gear position in the second shift mechanism is used alone, and the gear 5 and the gear ring 6 in the first shift mechanism are disengaged;

[0062] 2. The B gear position in the second gear shift mechanism is used alone, and the gear 5 and the gear ring 6 in the first gear shift mechanism are disengaged;

[0063] 3: The A gear in the second gear shift mechanism is used together with the downshift in the first gear shift mechanism (gear 5 and gear ring 6 are in meshing state);

[0064] Four: The B gear position in the second gear shift mechanism is used together with the downshift in the first gear shift mechanism (gear 5 and gear ring 6 are in meshing state);

[0065] According to the preset output speeds of the A gear and the B gear, in combination with the reduction of the gear 5 and the gear ring 6, a variety of different speeds can be achieved to match the speeds required by different working heads.

[0066] 2); The operations required for the above different speeds are as follows:

[0067] In the initial setting, gear 5 and gear ring 6 are in a disengaged state;

[0068] S1: Press the pressing block 12 for increasing the gear position, the pressing block 12 drives the driven rod 13, presses the trigger switch 14, and makes the gear position reach the A gear position, and does not operate the first gear shifting mechanism;

[0069] S2: Press the pressing block 12 for increasing the gear position again to increase the gear position from the A gear position to the B gear position, but do not operate the first gear shifting mechanism;

[0070] S3: Operate the pressing block 12 for lowering the gear, so that the gear is lowered from the B gear to the A gear, operate the shift plate 4, the convex plate 401 on the shift plate 4 moves with the shift plate 4, driving the shift fork 8 to move, and the shift fork 8 will pass over the convex block 701 when moving, providing a certain mechanical damping feeling, which is fed back to the operator, and the shift fork 8 drives the fixing ring 9 to move, and the fixing ring 9 drives the gear 5 to move, so that the gear 5 is meshed with the gear ring 6, and the movement of the convex plate 401 will also synchronously drive the elastic rod 10, so that the elastic rod 10 passes over one of the locking grooves 101 and enters the other locking groove 101.

[0071] S4: Since the gear 5 and the gear ring 6 have been meshed in the above S3, in this step, it is only necessary to operate the pressing block 12 for providing the gear position so that the gear position A is shifted to the gear position B again, and no additional operation is required.

Claims

1. A dual-shift control electric tool, characterized in that: include: chassis; The motor provides driving force for the power tool; A first shift mechanism, located above the housing, for adjusting the output speed of the motor; A second shift mechanism, located below the housing, for adjusting the output speed of the motor; A central processing unit, which includes a control module, for receiving a control instruction issued by the second shift mechanism to the motor; The first shift mechanism can be used together with the second shift mechanism to match different output speeds.

2. The electric tool with dual shift control according to claim 1, characterized in that: The first shift mechanism adopts a mechanical adjustment method, including: A paddle for manual operation; A gear, one end of which is connected to the motor output shaft through a coupling; A gear ring, which can be disengaged from the gear, and the diameter of the gear ring is larger than the diameter of the gear; When the gear and the gear ring are meshed, the gear speed will decrease and the torque will increase accordingly; When the gear and the gear ring are disengaged, the gear speed will increase and the torque will decrease accordingly.

3. The electric tool with dual shift control according to claim 2, characterized in that: The first shift mechanism further comprises: A mounting cylinder, the interior of which is rotatably connected to the gear ring; The shift fork is rotatably arranged on the outside of the mounting tube through a fixing rod; A fixed ring is mounted on the shift fork, wherein the inner concave portion of the fixed ring is rotatably connected to the convex ring at one end of the gear; The movement of the shift fork drives the fixed ring to achieve the state switching between the gear and the gear ring.

4. The electric tool with dual shift control according to claim 3, characterized in that: A convex plate is fixedly provided at one end of the shift plate, and a first groove and a second groove are provided on the convex plate, wherein the first groove is used for installing the shift fork; An elastic rod is installed in the second groove, and two ends of the elastic rod are provided with pointed ends; Two baffles are fixedly provided at both ends, the angle between every two adjacent but non-contacting baffles is a right angle, and every two adjacent baffles fit with the tip of the elastic rod to limit the elastic rod.

5. The electric tool with dual shift control according to claim 4, characterized in that: A guide groove is provided on the mounting tube, one end of the shift fork passes through the guide groove, and the guide groove is used to guide and limit the shift fork; A convex block is installed on the outer wall of the installation cylinder and is located above the guide groove. Both ends of the convex block are inclined surfaces for locking the position of the shift fork.

6. The electric tool with dual shift control according to claim 4, characterized in that: A locking groove is provided in the housing to cooperate with the tip of the elastic rod to achieve correct position locking.

7. The electric tool with dual shift control according to claim 1, characterized in that: The second shift mechanism adopts an electronic adjustment method, including: A panel, mounted on the casing; A pressing block is mounted on the panel via an elastic plate, and a driven rod is mounted at the bottom of the pressing block; The trigger switch is mounted on the CPU, with the top in contact with the follower rod; The pressing block drives the driven rod to press the trigger switch to adjust the output speed of the motor.

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