CN111347377A - Control device of electric tool and electric tool with same - Google Patents
Control device of electric tool and electric tool with same Download PDFInfo
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- CN111347377A CN111347377A CN201811582133.9A CN201811582133A CN111347377A CN 111347377 A CN111347377 A CN 111347377A CN 201811582133 A CN201811582133 A CN 201811582133A CN 111347377 A CN111347377 A CN 111347377A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
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Abstract
The invention discloses a control device of an electric tool and the electric tool with the same, wherein the control device comprises: a switch body; the power on/off function key is movably arranged on the switch body; and the annular sealing piece is arranged between the switch body and the on-off function key, and two ends of the annular sealing piece are respectively in sealing connection with the switch body and the on-off function key. According to the control device provided by the embodiment of the invention, the annular sealing element is arranged between the switch body and the on-off function key, so that the sealing property between the switch body and the on-off function key is effectively ensured, the sensitivity and pressing hand feeling of the on-off function key are effectively ensured, the service life is prolonged, the safety and reliability of the electric tool are further improved, and the use experience is improved.
Description
Technical Field
The invention relates to the technical field of electric tools, in particular to a control device of an electric tool and the electric tool with the control device.
Background
Electric tools (electric drills, impact drivers, rotary tools, vibrating head tools, etc.) are generally controlled by pressure-sensitive switches, i.e., the rotation of the electric tools is controlled by pressing on/off function keys.
However, in the long-time use of electric tool, because the leakproofness between switch body and the on & off function button is not good, make inside dust and moisture etc. of external or electric tool invade the on & off function button easily, lead to the reduction of on & off function button sensitivity and the feeling variation of pressing, reduce electric tool's life, the condition that just can start or close needs to be pressed many times to exist when using even, not only reduces electric tool's security reliability, and greatly reduced uses experiences, remains to solve.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, an object of the present invention is to provide a control device for an electric tool, which can effectively ensure the sensitivity and pressing hand feeling of the power on/off function button, prolong the service life, further improve the safety and reliability of the electric tool, and improve the use experience.
Another object of the present invention is to provide a power tool.
In order to achieve the above object, an embodiment of an aspect of the present invention provides a control device for an electric power tool, including: a switch body; the power on/off function key is movably arranged on the switch body; the annular sealing piece is arranged between the switch body and the startup and shutdown function key, and two ends of the annular sealing piece are respectively in sealing connection with the switch body and the startup and shutdown function key.
According to the control device of the electric tool, the annular sealing element is arranged between the switch body and the on-off function key, so that the sealing performance between the switch body and the on-off function key is effectively guaranteed, and dust, moisture and the like outside or inside the electric tool are prevented from invading the on-off function key, so that the sensitivity and pressing hand feeling of the on-off function key are effectively guaranteed, the service life is prolonged, the safety and reliability of the electric tool are improved, and the use experience is improved.
In addition, the control device of the electric tool according to the above embodiment of the present invention may further have the following additional technical features:
further, in an embodiment of the present invention, the on/off function button has a mounting concave cavity opening toward the switch body, wherein one end of the annular sealing member extends into the mounting concave cavity and is connected with the on/off function button in a sealing manner.
Further, in one embodiment of the invention, the annular seal is formed as a bellowed seal.
Further, in an embodiment of the present invention, the electric power tool includes a body, the body includes a main body portion and a holding portion, a motor is disposed in the body, the motor is used for providing a driving force, the holding portion is suitable for being held by a human hand, wherein the switch body is disposed on the holding portion, and the control device further includes:
the steering function key is movably arranged on the switch body; the position detection assembly is connected with the steering function key to detect the current position of the steering function key; the pressure sensing assembly is connected with the power on/off function key to detect a pressure signal acting on the power on/off function key; and the controller is respectively connected with the position detection assembly, the pressure detection assembly and the motor, and controls the motor to rotate forwards or backwards according to the pressure signal at a corresponding target rotating speed after the power on/off function key is triggered.
Further, in an embodiment of the present invention, the switch body further includes: a housing; the front end of the first guide rod is connected with the startup and shutdown function key, the rear end of the first guide rod is provided with a gap with a preset width with the front end of the second guide rod, and the rear end of the second guide rod is connected with the pressure sensing assembly.
Further, in an embodiment of the present invention, the pressure sensing assembly is connected to the controller through an output signal pin, wherein the output signal pin is integrally injection-molded with the housing, and one end of the output signal pin extends out of the housing.
Further, in one embodiment of the present invention, the pressure sensing assembly includes: the force transmission assembly is arranged at the rear end of the second guide rod and is used for responding and uniformly dispersing pressure acting on the second guide rod; and the pressure sensor is connected with the force transmission assembly in a clearance manner to detect the pressure and generate the pressure signal.
Further, in an embodiment of the present invention, the method further includes: and one end of the prepressing reset spring is connected with the startup and shutdown function key, and the other end of the prepressing reset spring is connected with the shell.
Further, in an embodiment of the present invention, the pre-pressure return spring is sleeved outside the first guide rod and located in the annular sealing member.
Further, in an embodiment of the present invention, a side of the housing facing the power on/off function button is provided with a positioning step, and the other end of the annular sealing member is disposed on the positioning step.
Further, in one embodiment of the present invention, the current position includes a first position and a second position, and the position detecting component includes: a first Hall IC arranged corresponding to the first position; a second Hall IC arranged corresponding to the second position; and the magnetic steel is arranged on the induction arm of the steering function key so as to judge the current position through position signals output by the first Hall IC and the second Hall IC.
Further, in an embodiment of the present invention, when the current position is determined to be the first position, the motor is controlled to rotate in the forward direction; and when the current position is judged to be the second position, controlling the motor to rotate reversely.
Further, in an embodiment of the present invention, the current position further includes: and a third position, wherein when the current position is judged to be the third position, the motor is controlled to be locked.
Further, in an embodiment of the present invention, the method further includes: and the power supply module is used for supplying power to the controller when the power on/off function key is triggered.
In order to achieve the above object, according to another aspect of the present invention, an electric tool is provided, which includes the control device of the electric tool according to the above embodiment. The electric tool provided by the embodiment of the invention can effectively ensure the sealing property between the switch body and the on-off function key, and prevent dust, moisture and the like outside or inside the electric tool from invading the on-off function key, so that the sensitivity and pressing hand feeling of the on-off function key are effectively ensured, the service life is prolonged, the safety and reliability of the electric tool are further improved, and the use experience is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a control device of an electric power tool according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the relative positions of the switch body, the power on/off function button and the steering function button according to one embodiment of the present invention;
FIG. 3 is a schematic structural view of a power tool according to an embodiment of the present invention;
FIG. 4a is a graph of resistance versus pressure for a flexible membrane pressure sensor in accordance with one embodiment of the present invention;
FIG. 4b is a graph of conductivity versus pressure for a flexible membrane pressure sensor in accordance with one embodiment of the present invention;
FIG. 5 is a top view of a steering function key operation process in accordance with one embodiment of the present invention;
FIG. 6 is a side view of the turn function key in an intermediate position in accordance with one embodiment of the present invention;
FIG. 7 is a side view of a turn function key not in a neutral position according to one embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A control device of an electric power tool proposed according to an embodiment of the present invention and an electric power tool having the same will be described below with reference to the accompanying drawings, and first, the control device of the electric power tool proposed according to an embodiment of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a schematic configuration diagram of a control device of an electric power tool according to an embodiment of the present invention.
As shown in fig. 1, the control device 100 for the electric power tool includes: a switch body 110, an on/off function button 120, and an annular seal 130.
As shown in fig. 2, the switch body 110 and the power on/off function button 120 are movably disposed on the switch body 110. The annular sealing member 130 is disposed between the switch body 110 and the on/off function button 120, and two ends of the annular sealing member 130 are respectively connected to the switch body 110 and the on/off function button 120 in a sealing manner. According to the control device 100 of the electric tool, the annular sealing element is arranged between the switch body and the on-off function key, so that the sealing performance between the switch body and the on-off function key is effectively guaranteed, the sensitivity and pressing hand feeling of the on-off function key are effectively guaranteed, the service life is prolonged, the safety and reliability of the electric tool are improved, and the use experience is improved.
Further, in one embodiment of the present invention, the on/off function button 120 has a mounting cavity opened toward the switch body 110, wherein one end of the annular sealing member 130 protrudes into the mounting cavity and is sealingly connected with the on/off function button 120.
Wherein, in one embodiment of the present invention, the annular seal 130 is formed as a bellowed seal ring.
Further, in an embodiment of the present invention, as shown in fig. 3, the power tool includes a main body 200, the main body 200 includes a main body portion 210 and a grip portion 220, a motor M (not specifically shown in fig. 2) is disposed in the main body 200, the motor M is used for providing a driving force, the grip portion is suitable for being held by a human hand, wherein the switch body 110 is disposed in the grip portion, as shown in fig. 1, the control device 100 further includes: a steering function key 140, a position sensing assembly 150, a pressure sensing assembly 160, and a controller 170 (not specifically identified).
The steering function button 140 is movably disposed on the switch body 110. The position detection assembly 150 is coupled to the steering function key 140 to detect the current position of the steering function key 140. The pressure sensing assembly 160 is coupled to the on/off function button 120 to detect a pressure signal applied to the on/off function button 120. The controller 170 is respectively connected to the position detecting assembly 150, the pressure detecting assembly 160 and the motor M, and after the power on/off function button 120 is triggered, the controller 170 controls the motor M to rotate forward or backward at a corresponding target rotation speed according to the pressure signal.
The above description is directed to the structure of the power tool 200 and the control device 100 of the power tool, and the structure of the control device 100 of the power tool will be described in detail below.
Further, in an embodiment of the present invention, as shown in fig. 1, the switch body 110 further includes: a housing 111, a first guide rod 112, and a second guide rod 113.
Wherein the housing 111. The first guide rod 112 and the second guide rod 113 are arranged in the shell 111, the front end of the first guide rod 112 is connected with the on-off function key 120, a gap with a preset width is arranged between the rear end of the first guide rod 112 and the front end of the second guide rod 113, and the rear end of the second guide rod 113 is connected with the pressure sensing assembly 160.
Specifically, as shown in fig. 1, the switch body 110 has a housing 111, and the front end of the switch body 110 is connected to and provided with an on/off function key 120 (where, the left side in fig. 4 is defined as the front end of the switch body 110), the top of the switch body 110 is provided with a steering function key 140, the housing 111 of the switch body 110 is concentrically provided with a first guide rod 112 and a second guide rod 113, and a gap with a preset width is provided between the first guide rod 112 and the second guide rod 113 to increase the pressing stroke of the user, so that the pressing feel of the user can be effectively improved, and the operation experience of the user can be effectively improved, wherein regarding the gap with the preset width, a person skilled in the art can set the specific width of the gap according to actual situations, without being particularly limited herein. The first guide bar 112 may be referred to as a main guide bar, and the second guide bar 113 may be referred to as a sub guide bar.
Further, in an embodiment of the present invention, as shown in fig. 1, a side of the housing 111 facing the on/off function button 120 is provided with a positioning step 101, and the other end of the annular sealing member 130 is provided on the positioning step 101.
In the above embodiment, the annular sealing element is disposed between the switch body and the power on/off function button, so as to effectively ensure the sealing property between the switch body and the power on/off function button, and further improve the sealing property of the control device 100 of the electric tool, as shown in fig. 5, in an embodiment of the present invention, the pressure sensing assembly 160 is connected to the controller 170 through the output signal pin 102, wherein the output signal pin 102 is integrally injection-molded with the housing 111, and one end of the output signal pin extends out of the housing 111.
According to the embodiment of the invention, the output signal pin and the shell are integrally injection-molded, and one end of the output signal pin extends out of the shell, so that the signal transmission between the pressure sensing assembly and the controller can be ensured, and the sealing performance of the control device of the electric tool is further improved. The structure of the pressure sensing assembly 160 will be further described below.
Further, in one embodiment of the present invention, as shown in fig. 1, the pressure sensing assembly 160 includes: a force transfer assembly 161 and a pressure sensor 162.
Wherein the force transmission assembly 161 is disposed at the rear end of the second guide bar 113 to respond to and uniformly disperse the pressure applied to the second guide bar 113. A pressure sensor 162 is in spaced communication with the force transmitting assembly 160 to sense pressure and generate a pressure signal.
Specifically, as shown in fig. 1, the force transmission assembly 161 is located at the rear end of the second guide rod 113, and is used for transmitting force to a user, so as to uniformly disperse the operation force of the user through the deformation of the head of the force transmission assembly 161, and improve the use experience of the user. A pressure sensor 162 is attached to the force transmitting assembly 161 with a gap therebetween for sensing a user operating force transmitted through the force transmitting assembly 161. The force transmission component 161 may be a rubber force transmission member, and the pressure sensor 161 may be a pressure sensing PCB or a flexible film pressure sensor, which is only used as an example and is not limited in particular.
For example, the pressure sensor 162 is illustrated as a flexible membrane pressure sensor, the resistance of which is inversely related to the pressure applied to the force-transmitting member 161, as shown in FIG. 4 a. Specifically, the flexible film pressure sensor is a pressure sensor made of a flexible circuit material, which is composed of a special piezoresistive material interlayer and two pieces of flexible polyester fibers with silver printed conductors on the inner sides, is as thin as paper, has a thickness of less than 1mm, and is actually a resistance element with a highly linear relationship between the electrical conductivity and the change of the force load. As shown in fig. 4a-4b, when the pressure is zero, and the resistance is high, which can be in the order of mega ohms, and is basically equivalent to an open circuit. As the pressure increases, the resistance decreases and eventually can reach several thousand ohms, and the output is represented by the relationship between the conductivity and the pressure, with a high linearity (linearity error < ± 3%). Moreover, the pressing life of the flexible film pressure sensor can reach more than 100 ten thousand times. Therefore, the sensor is very suitable for being used on a handheld electric tool with light requirements, the pressure acting on the force transmission assembly 161 is detected through the flexible film pressure sensor, the operation parameters of the motor M are adjusted according to the pressure, the characteristic that the resistance value presents the magnitude order of megaohms when the pressing force is zero is utilized, and a power supply loop can be disconnected without a mechanical switch, so that the whole control device is in zero power consumption, and a power supply is protected. Therefore, the embodiment of the invention can detect the pressure acting on the force transmission assembly 161 through the flexible film pressure sensor to control the motor M to rotate forwards or backwards according to the pressure acting on the force transmission assembly 161, and has the advantages of small volume, light weight and long service life.
Further, in an embodiment of the present invention, as shown in fig. 1, the control device 100 of the electric power tool further includes: pre-compressing the return spring 180. One end of the pre-pressing reset spring 180 is connected with the on-off function key 120, and the other end of the pre-pressing reset spring 180 is connected with the shell 111.
Wherein, in one embodiment of the present invention, the pre-stressed return spring sleeve 180 is disposed outside the first guide rod 112 and within the annular seal 130.
Specifically, the pre-compression return spring sleeve 180 is further described in conjunction with the above-mentioned embodiment, as shown in fig. 1, the switch body 110 is positioned and mounted on the first guide rod 112 through the positioning and mounting hole 114, and the on/off function button 120 is screwed on the first guide rod 111 and is encapsulated by the pre-compression return spring 180 and the annular sealing member 130. After the user presses the power on/off function key 120, the elastic action of the pre-pressing reset spring 180 needs to be overcome, so that the operation hand feeling is effectively improved, and the pre-pressing reset spring 180 can not only position the power on/off function key 120, but also effectively improve the operation hand feeling of the user. Meanwhile, the first guide rod 112 and the second guide rod 113 contact against the gap, and transmit the operation force of the user to the force transmission assembly 161, and the pressure sensor 162 senses the operation force and generates an electric signal.
Further, in one embodiment of the present invention, the current position includes a first position and a second position, and the position detection assembly 150 includes: a first Hall IC arranged corresponding to the first position; a second Hall IC arranged corresponding to the second position; and the magnetic steel is arranged on the induction arm of the steering function key so as to judge the current position through the position signals output by the first Hall IC and the second Hall IC.
It is understood that the position detecting assembly 150 may be a hall element PCB, which is disposed on the top of the switch body 110 to form an electrical signal, and transmit a control signal through the output signal pin 102 and the cable. Specifically, as shown in fig. 1, the steering function button 140 is disposed on the top of the switch body 110, is movable in the direction perpendicular to the paper surface, and is operated by an operator, and includes a button body, a stopper in engagement with the on/off function button 120, and a magnetic steel 121 in inductive relation with the hall element PCB. Wherein the hall element PCB may include a first hall IC and a second hall IC.
In one embodiment of the invention, when the current position is judged to be the first position, the motor is controlled to rotate in the forward direction; and when the current position is judged to be the second position, controlling the motor to rotate reversely.
Further, in an embodiment of the present invention, the current location further includes: and a third position, wherein when the current position is judged to be the third position, the motor is controlled to be locked.
It should be noted that when the current position is the third position, it indicates that the steering function key 140 is located at the middle position, and when the current position is the first position or the second position, it indicates that the steering function key 140 is no longer located at the middle position.
Specifically, as shown in FIG. 5, the rest positions of the turn function key 140 may include a first position, a second position, and a third position. The hall element PCB comprises a first hall IC (103), a second hall IC (104) and a magnetic steel 121 arranged on an induction arm L of the steering function key 140, wherein the first hall IC is arranged corresponding to a first position, and the second hall IC is arranged corresponding to a second position.
When the steering function key 140 is located at the first position, the motor M is controlled to rotate in the forward direction; when the steering function key 140 is at the second position, the motor M is controlled to rotate in the reverse direction. When the steering function key 140 is located at the third position, the motor M is controlled to be locked.
Further, the steering function key 140 includes a sensing arm L that is movable between a first position, a second position, and a third position. The on-off function key 120 comprises an avoiding groove 122 and an anti-misoperation pressing top rib 123, the avoiding groove 122 can be in a way of avoiding when the on-off function key 120 is pressed, and the anti-misoperation pressing top rib 123 can prevent the accidental triggering of the button in transportation or storage. The steering function key 140 may further include an operation portion 141 and a safety arm 142, the operation portion 141 may allow a user to press left and right to select an operation state, the safety arm 142 is opposite to the mistaken-pressing prevention top rib 142 when the steering function key 140 is at the middle position (third position), and the power on/off function key 120 cannot be pressed, thereby playing a safety role. In fig. 5, the first position (a) is the upper side of the operation arm L, the second position (c) is the lower side of the operation arm L, and the third position (b) is the middle of the operation arm L. The magnetic steel 121 and the hall IC are in a non-contact type, so that the circuit part of the hall IC can be sealed, and the service life can be prolonged. And just adopt a switch module can realize the just reversal regulation of motor, more accord with user's operation custom.
The user can control sensing arm L through operation portion 141 and move between the first position, the second position and the third position, magnet steel 201 is arranged in operation arm L, first hall IC (103) corresponds the first position setting, second hall IC (104) corresponds the second position setting, when operation arm L is in the first position, magnet steel 201 is close to first hall IC, the level of first hall IC's position signal can change, when operation arm L is in the second position, magnet steel 201 is close to second hall IC, the level of the position signal that the second hall IC outputs can change, when operation arm L is in the third position, first hall IC, second hall IC all are initial position signals, the level can not change. Therefore, the embodiment of the present invention can determine the position of the steering function key 140 according to the position signals of the first hall IC and the second hall IC.
For example, along the direction shown in fig. 5, the first position is the upper position of the steering function key 140, the second position is the lower position of the steering function key 140, and the third position is the middle position of the steering function key 140, as shown in fig. 5, in fig. 5b, the steering function key 140 is located at the middle position, the stopper and the on/off function key 120 form a stopping relationship, the on/off function key 120 cannot be pressed, meanwhile, the magnetic steel 121 is staggered from the hall element PCB, and cannot form an induction, that is, the electric tool is in the standby state. In fig. 5a, when the user operates the steering function key 140 to move upward along the direction shown in the figure and then locates at the upper position, the stopper does not form a stopping relationship with the on/off function key 120 (the on/off function key 120 is provided with the avoiding groove 122), the on/off function key 120 can be pressed down, and at the same time, the magnetic steel 121 overlaps with the hall element PCB to generate an induction, that is, the electric tool is in a forward rotation state at this time. In fig. 5c, when the user operates the steering function button 140 to move downward in the direction shown in the figure and then locates at the lower position, the stop and the on/off function button 120 are not in a stop relationship, the on/off function button 120 can be pressed, and at the same time, the magnetic steel 121 overlaps with the hall element PCB to generate the sensing, that is, the electric tool is in the reverse rotation state.
As shown in fig. 6, when the steering function key 140 is located at the middle position, the stopper and the on/off function key 120 form a stopping relationship, so that the on/off function key 120 cannot be pressed down, thereby effectively preventing a user from performing a misoperation, preventing the user from pressing down a switch when not necessary, playing a safety role, and improving the safety and reliability of the device. As shown in fig. 7, when the steering function key 140 is not in the middle position, the stopper does not form a stopping relationship with the on/off function key 120, and at this time, the on/off function key 120 can be pressed down, and at the same time, the gap in the switch body 110 is eliminated, so that a pressure sensing is generated and a pressure sensing signal is transmitted.
Further, in an embodiment of the present invention, the control device 100 of the electric power tool further includes: a power supply module 190 (not specifically identified in the figures). The power supply module 190 is used for supplying power to the controller 170 when the power on/off function key 120 is triggered.
According to the control device of the electric tool provided by the embodiment of the invention, the annular sealing element is arranged between the switch body and the on-off function key, so that the sealing property between the switch body and the on-off function key is effectively ensured, and the dust, moisture and the like outside or inside the electric tool are prevented from invading the on-off function key, so that the sensitivity and pressing hand feeling of the on-off function key are effectively ensured, and the service life is prolonged; and stretch out outside the shell with the integrative injection moulding of output signal pin and shell and the one end of output signal pin, not only can guarantee the signal transmission between forced induction subassembly and the controller, further improve electric tool's controlling means's leakproofness moreover, improve electric tool's fail safe nature, promote to use and experience.
In addition, the embodiment of the invention also provides an electric tool, which comprises the control device of the electric tool of the embodiment. The electric tool provided by the embodiment of the invention can effectively ensure the sealing property between the switch body and the on-off function key, and prevent dust, moisture and the like outside or inside the electric tool from invading the on-off function key, so that the sensitivity and pressing hand feeling of the on-off function key are effectively ensured, and the service life is prolonged; and stretch out outside the shell with the integrative injection moulding of output signal pin and shell and the one end of output signal pin, not only can guarantee the signal transmission between forced induction subassembly and the controller, further improve electric tool's controlling means's leakproofness moreover, improve electric tool's fail safe nature, promote to use and experience.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (15)
1. A control device for a power tool, comprising:
a switch body;
the power on/off function key is movably arranged on the switch body;
the annular sealing piece is arranged between the switch body and the startup and shutdown function key, and two ends of the annular sealing piece are respectively in sealing connection with the switch body and the startup and shutdown function key.
2. The control device of the electric tool as claimed in claim 1, wherein the on/off function button has a mounting recess opened toward the switch body,
one end of the annular sealing element extends into the mounting concave cavity and is in sealing connection with the startup and shutdown function key.
3. The control device of the electric power tool as claimed in claim 1, wherein the annular seal member is formed as a bellofram.
4. The control device of the electric tool according to claim 1, wherein the electric tool includes a body including a main body portion and a grip portion, a motor is provided in the body for providing a driving force, the grip portion is adapted to be held by a human hand,
wherein, the switch body is located the portion of gripping, controlling means still includes:
the steering function key is movably arranged on the switch body;
the position detection assembly is connected with the steering function key to detect the current position of the steering function key;
the pressure sensing assembly is connected with the power on/off function key to detect a pressure signal acting on the power on/off function key; and
and the controller is respectively connected with the position detection assembly, the pressure detection assembly and the motor, and controls the motor to rotate forwards or backwards according to the pressure signal at a corresponding target rotating speed after the power on/off function key is triggered.
5. The control device of the electric power tool according to claim 4, wherein the switch body further includes:
a housing;
the front end of the first guide rod is connected with the startup and shutdown function key, the rear end of the first guide rod is provided with a gap with a preset width with the front end of the second guide rod, and the rear end of the second guide rod is connected with the pressure sensing assembly.
6. The control device of the electric tool according to claim 5, wherein the pressure sensing assembly is connected to the controller through an output signal pin,
the output signal pin and the shell are integrally formed in an injection molding mode, and one end of the output signal pin extends out of the shell.
7. The control device of the electric power tool according to claim 5, wherein the pressure sensing assembly includes:
the force transmission assembly is arranged at the rear end of the second guide rod and is used for responding and uniformly dispersing pressure acting on the second guide rod;
and the pressure sensor is connected with the force transmission assembly in a clearance manner to detect the pressure and generate the pressure signal.
8. The control device of the electric power tool according to any one of claims 5 to 7, characterized by further comprising:
and one end of the prepressing reset spring is connected with the startup and shutdown function key, and the other end of the prepressing reset spring is connected with the shell.
9. The control device of the electric tool as claimed in claim 8, wherein the pre-pressure return spring is sleeved outside the first guide rod and located in the annular sealing member.
10. The control device of the electric tool according to any one of claims 5 to 7, wherein a side of the housing facing the on/off function button is provided with a positioning step, and the other end of the annular seal member is provided on the positioning step.
11. The control device of the electric power tool according to claim 4, wherein the current position includes a first position and a second position, and the position detection assembly includes:
a first Hall IC arranged corresponding to the first position;
a second Hall IC arranged corresponding to the second position;
and the magnetic steel is arranged on the induction arm of the steering function key so as to judge the current position through position signals output by the first Hall IC and the second Hall IC.
12. The control device of the electric power tool according to claim 11,
when the current position is judged to be the first position, controlling the motor to rotate in the forward direction;
and when the current position is judged to be the second position, controlling the motor to rotate reversely.
13. The control device of the electric power tool according to claim 11 or 12, the current position further comprising: in the third position, the first and second positions are,
and controlling the motor to be locked when the current position is judged to be the third position.
14. The control device for the electric power tool according to claim 4, further comprising:
and the power supply module is used for supplying power to the controller when the power on/off function key is triggered.
15. An electric power tool, characterized by comprising: a control device for an electric power tool according to any one of claims 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582133.9A CN111347377A (en) | 2018-12-24 | 2018-12-24 | Control device of electric tool and electric tool with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582133.9A CN111347377A (en) | 2018-12-24 | 2018-12-24 | Control device of electric tool and electric tool with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111347377A true CN111347377A (en) | 2020-06-30 |
Family
ID=71190335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811582133.9A Withdrawn CN111347377A (en) | 2018-12-24 | 2018-12-24 | Control device of electric tool and electric tool with same |
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| Country | Link |
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| CN (1) | CN111347377A (en) |
Cited By (1)
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| TWI816318B (en) * | 2021-03-04 | 2023-09-21 | 美商施耐寶公司 | Tool and direction selector mechanism used in tool |
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Application publication date: 20200630 |