False start prevention module of edge trimmer

Abstract

The utility model relates to a false start prevention module of an edge trimmer, which comprises a first switch and a second switch, the first switch is a mechanical switch, the second switch is a touch switch, and the first switch is connected in series between the positive electrode of a power supply and a voltage regulation module. The positive electrode end of the second switch is connected to the voltage adjusting module, the negative electrode end of the second switch is grounded, the signal output end of the second switch is connected with a controller of the edge trimmer, a motor of the edge trimmer is connected with the voltage adjusting module through an MOS tube, the grid electrode of the MOS tube is connected with the controller, and the voltage adjusting module is connected with the controller. According to the utility model, the mechanical switch and the touch switch are matched with each other, and the touch switch is connected to the downstream of the mechanical switch, so that after the mechanical switch is closed, the touch switch can be electrified to realize the switching function, and by adopting the technical scheme of the utility model, a complex structure is not required to be arranged to interlock the first switch and the second switch; the false start prevention module of the edge trimmer is greatly simplified, and the manufacturing cost of the false start prevention module of the edge trimmer is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting processing, and in particular relates to an anti-misstart module for a trimming machine. Background Art

[0002] The trimmer is a commonly used auxiliary tool in woodworking, mainly used for chip cutting, milling grooves and other operations on the edges of wood. During use, the trimmer speed is extremely high, reaching 20000-30000rpm, so false start will cause relatively serious consequences. In order to overcome misoperation, the utility model patent with patent number 202223170052 provides a "control switch on the trimmer". By setting two switches and using mechanical interlocking, the two switches must be closed in a certain order to start the trimmer normally. Otherwise, the switch cannot be closed normally, thereby solving the problem of false start.

[0003] However, this mechanical interlocking method has the problems of complex structure and high manufacturing cost. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an anti-misstart module for a trimmer, so as to solve the technical problems of complex structure and high manufacturing cost of a traditional anti-misstart switch.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a trimmer anti-misstart module includes a first switch and a second switch, wherein the first switch is a mechanical switch and the second switch is a touch switch, the first switch is connected in series between the positive pole of the power supply and the voltage regulation module, the positive end of the second switch is connected to the voltage regulation module, the negative end is grounded, and the signal output end is connected to the controller of the trimmer, the motor of the trimmer is connected to the voltage regulation module through a MOS tube, the gate of the MOS tube is connected to the controller, and the voltage regulation module is connected to the controller to supply power to the controller.

[0006] As a preferred solution, the first switch and the second switch are respectively arranged on two opposite sides of the trimmer body.

[0007] As a preferred solution, a voltage regulator diode is connected in series between the positive terminal of the second switch and the voltage regulation module, a first resistor is connected in series between the voltage regulator diode and the voltage regulation module, a capacitor is connected in parallel between the first resistor and the voltage regulator diode, and the negative electrode of the capacitor is grounded.

[0008] As a preferred solution, the negative electrode of the capacitor is grounded via a second resistor.

[0009] As a preferred solution, a signal light is connected between the positive electrode of the capacitor and the positive electrode of the voltage-stabilizing diode, and the signal light is arranged on the side wall of the fuselage for users to observe.

[0010] As a preferred solution, the voltage regulation module has multiple output terminals, which respectively output voltages adapted to the motor, the controller and the second switch.

[0011] The beneficial effects of the utility model are as follows: the utility model utilizes a mechanical switch and a touch switch to cooperate with each other, and connects the touch switch downstream of the mechanical switch. After the mechanical switch is closed, the touch switch can be powered to realize the switch function, and the touch switch is in a normally open state when it is out of power and cannot be closed. Even if the user fails to close the first switch in sequence, the second switch will not be closed due to touching the second switch. The technical solution described in the utility model does not require the setting of a complex structure to interlock the first switch and the second switch, which greatly simplifies the trimmer anti-misstart module and reduces the manufacturing cost of the trimmer anti-misstart module. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0013] Figure 1 It is the electrical schematic diagram of the utility model;

[0014] Figure 2 This is a state diagram of the utility model being applied to a trimming machine;

[0015] Figure 1 and Figure 2 Among them, 1. the first switch, 2. the second switch, 3. the power supply, 4. the voltage regulation module, 5. the controller, 6. the motor, 7. the MOS tube, 8. the body, 9. the capacitor, 10. the signal light, 11. the second resistor, 12. the voltage regulator diode, 13. the first resistor. DETAILED DESCRIPTION

[0016] The specific implementation scheme of the utility model is described in detail below in conjunction with the accompanying drawings.

[0017] like Figure 1 and Figure 2 The trimmer anti-misstart module shown includes a first switch 1 and a second switch 2, wherein the first switch 1 is a mechanical switch and the second switch 2 is a touch switch. The first switch 1 is connected in series between the positive pole of the power supply 3 and the voltage regulating module 4, the positive end of the second switch 2 is connected to the voltage regulating module 4, the negative end is grounded, and the signal output end is connected to the controller 5 of the trimmer. The motor 6 of the trimmer is connected to the voltage regulating module 4 through the MOS tube 7, the gate of the MOS tube 7 is connected to the controller 5, and the voltage regulating module 4 is connected to the controller 5 to supply power to the controller 5. The power supply 3 described in this embodiment is preferably a mobile power supply, such as a battery pack.

[0018] like Figure 2As shown, the first switch 1 and the second switch 2 in this embodiment are respectively arranged on two opposite sides of the trimmer body 8 to facilitate user distinction.

[0019] As an improvement to the above technical solution, in this embodiment, a voltage regulator diode 12 is connected in series between the positive terminal of the second switch 2 and the voltage regulating module 4, a first resistor 13 is connected in series between the voltage regulator diode 12 and the voltage regulating module 4, a capacitor 9 is connected in parallel between the first resistor 13 and the voltage regulator diode 12, and the negative terminal of the capacitor 9 is grounded. When the first switch 1 is closed, the voltage regulator module 4 first charges the capacitor 9. Due to the voltage dividing effect of the first resistor 13, the voltage regulator diode 12 cannot be turned on. After the capacitor 9 is fully charged, the voltage across the first resistor 13 is constant, and the voltage regulator diode 12 is turned on. This setting can delay the start of the second switch 2, avoiding the user from accidentally touching the second switch 2 when starting the first switch 1, which causes the trimmer to start directly.

[0020] In this embodiment, a second resistor 11 is further connected to the negative electrode of the capacitor 9, and the other end of the second resistor 11 is grounded, which can slow down the charging speed of the capacitor 9 and extend the delayed start time of the second switch 2.

[0021] In order to avoid misjudgment by the user, the present embodiment further connects a signal light 10 between the positive electrode of the capacitor 9 and the positive electrode of the voltage stabilizing diode 12, and the signal light 10 is arranged on the side wall of the machine body 8 for the user to observe. During the charging process of the capacitor 9, the signal light 10 will light up, and after the charging of the capacitor 9 is completed, the signal light 10 will go out, and at this time, the user can start the trimmer through the second switch 2.

[0022] The voltage regulating module 4 described in this embodiment has multiple output terminals, which respectively output voltages adapted to the motor 6 , the controller 5 and the second switch 2 .

[0023] The working process of this utility model is: Figure 1 and Figure 2 As shown, in the application of the trimmer anti-misstart module described in this embodiment, the user must first close the first switch 1 to send a control signal to the controller 5 through the second switch 2, and the controller 5 controls the motor 6 to rotate or stop. When the first switch 1 is in the open state, the user will not close the second switch 2 even if he touches the second switch 2 in time, so the first switch 1 will not be closed when the second switch 2 is closed.

[0024] The technical solution adopted by the utility model has a simple structure and reliable performance, and can effectively reduce the manufacturing cost of the trimmer anti-misstart module.

[0025] The above embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. The trimmer anti-misstart module is characterized by: The invention comprises a first switch (1) and a second switch (2), wherein the first switch (1) is a mechanical switch and the second switch (2) is a touch switch. The first switch (1) is connected in series between the positive electrode of a power source (3) and a voltage regulating module (4). The positive end of the second switch (2) is connected to the voltage regulating module (4), the negative end is grounded, and the signal output end is connected to a controller (5) of a trimmer. The motor (6) of the trimmer is connected to the voltage regulating module (4) via a MOS tube (7). The gate of the MOS tube (7) is connected to the controller (5). The voltage regulating module (4) is connected to the controller (5) to supply power to the controller (5).

2. The trimmer anti-misstart module according to claim 1, characterized in that: The first switch (1) and the second switch (2) are respectively arranged on two opposite sides of the trimmer body (8).

3. The trimmer anti-misstart module according to claim 2, characterized in that: A voltage regulator diode (12) is connected in series between the positive terminal of the second switch (2) and the voltage regulation module, a first resistor (13) is connected in series between the voltage regulator diode (12) and the voltage regulation module (4), a capacitor (9) is connected in parallel between the first resistor (13) and the voltage regulator diode (12), and the negative electrode of the capacitor (9) is grounded.

4. The trimmer anti-misstart module according to claim 3, characterized in that: The negative electrode of the capacitor (9) is grounded via a second resistor (11).

5. The trimmer anti-misstart module according to claim 4, characterized in that: A signal light (10) is connected between the positive electrode of the capacitor (9) and the positive electrode of the voltage-stabilizing diode (12), and the signal light (10) is arranged on the side wall of the fuselage (8) for observation by the user.

6. The trimmer anti-misstart module according to claim 1, characterized in that: The voltage regulating module (4) has a plurality of output terminals, which respectively output voltages adapted to the motor (6), the controller (5) and the second switch (2).

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