CN212635652U - Pen-type electric tool machine - Google Patents

Abstract

The utility model relates to a pen-shaped electric tool machine, it mainly is equipped with a casing, a circuit substrate is equipped with in the casing, circuit substrate connects a power supply, a power supply drive axle center subassembly, axle center subassembly front end is equipped with the clamp part of a clamp accessory, the clamp part outside is equipped with a locking part that is used for locking the accessory, wherein construct speed regulator and torsion and rotational speed regulating unit on circuit substrate, torsion and rotational speed regulating unit can be according to external factor such as frictional force or user operation application of force difference, and the automatic adjustment motor rotational speed; therefore, the voltage and the current of the change of the motor rotating speed are calculated by the torque and rotating speed adjusting unit, so that the rotating speed of the motor can be automatically finely adjusted and simulated, and the use value and the effect of the pen-type electric tool machine are improved.

Description

Pen-type electric tool machine

Technical Field

The present invention relates to a pen-type electric tool, and more particularly to a pen-type electric tool that achieves an automatic torque adjustment function, integrates devices, and improves a use value by using a built-in torque adjustment technique.

Background

According to the technical scheme, the pen-type electric tool is a universal electric engraving pen, an electric engraving knife, an electric engraving pen, a pen-type electric engraving machine, an electric engraving pen, an electric engraving knife and the like; the electric tool which can be operated by hand to hold a pen is a pen-type electric tool regardless of the rotary, back-and-forth and vibration modes. This type of power tool provides a distinct visual separation from other "gun-type" or "profile" power tools such as those used in home repair power tools commonly found in hardware stores, as well as various types of woodworking decorations, factory assembly operations, heavy duty operations, and the like. Generally, pen-type power tools appeal to the flexible operating characteristics of being lightweight and pen-holding.

Pen-type electric tools are mainly classified into two categories: the transformer (or charger) type is attached, and the controller type is attached; the classification from entry to highest order product is in roughly the following order:

1. a consumption-level single-handle (Hand-piece) is attached with an AC-to-DC transformer: the family is mainly the leisure lovers who do-it-yourself (DIY). Generally, the product function of the single handle is limited by the narrow space inside the body and the limited circuit board area, which often has only the most basic functions, such as: on/off, speed regulation, portable use (with charger type) after the built-in battery can be charged, and the like.

2. Semi-professional handle attached Controller (Semi-professional Hand-piece and Controller): the main users also select the products with the same level for the leisure fans with single handle due to the insufficient performance and functions of the products. The so-called "controller" is a slave unit that integrates power supply and control functions. Because the control circuit board is independent of the grab handle, more space is obtained, and more functions can be added on the circuit board, such as: the motor is switched in positive and negative rotation, the safety fuse, the power indicator light, the rotating speed display and the like. There is also a design of built-in rechargeable battery inside the controller, which has both performance and portability.

3. Professional handle-attached Controller (Professional Hand-piece and Controller): its users are converted from amateurs to professional users and used as production tools, for example: engravers, prototypewriters, manicurists, dental model technicians, and the like. Professional users demand more stable, durable grips and more, richer advanced function controls. The rotation speed and torque of the step are several times of the above types, and the controller has the functions of controlling the rotation speed of the motor, automatically compensating the torque, finely adjusting the torque, supporting the external connection of multiple sets of handles, etc. besides the above mentioned functions. However, the more clear indicator is to have long-term continuous operation capability, so it is necessary to have more excellent heat dissipation performance, smoother and precise design of the handle mechanism to meet more severe usage conditions and environments.

4. Dentist grade: the step distance adopts a miniature brushless motor and a high-order controller to achieve the highest-level performances of ultrahigh rotating speed, constant rotating speed when the motor is loaded, silence and the like.

However, while the dentist-level and professional-level pen-type electric tools are expensive and are favored by trained users, the tools required by the general public are not only sufficient in horsepower, cheap in price, convenient to use, but the classification shows that the entrance products cannot meet the requirements of people, the motor power is usually in a usable state, especially when the rotation speed is set to a low level, the motor stops immediately after contacting the workpiece, the torque force is so small that the torque force has little practical use value, and therefore, the tool is regrettable for consumers who like DIY.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a pen-shaped electric tool, especially a pen-shaped electric tool with enhanced performance, high utility and integrated equipment, which can achieve the above-mentioned functions through a built-in torque adjustment technique.

The embodiment of the utility model provides a main purpose and efficiency of pen type electric tool machine are reached by following specific technological means:

the motor speed regulator is mainly provided with a shell, a circuit substrate is arranged in the shell and connected with a power source, the power source drives a shaft center component, the front end of the shaft center component is provided with a clamping part for clamping accessories, a locking part for locking the accessories is arranged outside the clamping part, a speed regulator and a torque and rotating speed regulating unit are constructed on the circuit substrate, and the torque and rotating speed regulating unit can automatically regulate the rotating speed of the motor according to different external factors such as friction force or force application of user operation; therefore, the voltage and the current of the change of the motor rotating speed are calculated by the torque and rotating speed adjusting unit, so that the rotating speed of the motor can be automatically finely adjusted and simulated, and the use value and the effect of the pen-type electric tool machine are improved.

An embodiment of the present invention provides a pen-type electric tool machine, further including a handle cover, the handle cover is disposed outside the front end of the housing and located behind the locking member, the handle cover is used for holding by a user.

The embodiment of the utility model provides a preferred embodiment of a pen type electric tool machine, wherein further include an axle center mounting, the axle center mounting wear to organize in on the casing and correspond axle center subassembly department, the axle center mounting is used for the location the axle center subassembly does not rotate.

Drawings

Fig. 1 is a schematic exploded view of a three-dimensional structure according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of an embodiment of the present invention.

Fig. 3 is a schematic combined cross-sectional view provided by an embodiment of the present invention.

Fig. 4 is a schematic axial positioning sectional view provided by the embodiment of the present invention.

Reference numerals:

1: shell body

11: screw ring

2: axle center assembly

21: clamping part

22: locking part

23: fan with cooling device

3: power source

4: circuit board

41: power input terminal

42: speed regulator

43: torsion and rotation speed adjusting unit

5: handle sleeve

6: axle center fixing piece

Detailed Description

First, referring to fig. 1 to 3, a three-dimensional exploded, an appearance and a sectional view of a pen-type electric tool according to an embodiment of the present invention are shown, which includes:

a housing 1;

a shaft center component 2 correspondingly installed inside the housing 1, wherein one end of the shaft center component 2 is connected with a power source 3, the other end is provided with a clamping part 21 for clamping accessories, the clamping part 21 protrudes out of the housing 1, and the outside is provided with a locking piece 22 for locking the accessories;

a circuit board 4 disposed inside the housing 1 and connected to the power source 3, wherein a power input 41 and a speed regulator 42 for controlling the rotation speed of the power source 3 are configured on the circuit board 4;

the circuit board 4 is provided with a torque and rotation speed adjusting unit 43, and the torque and rotation speed adjusting unit 43 is located in the housing 1 and can automatically adjust the rotation speed of the power source 3 according to external factors.

As shown in fig. 1 to 3, the housing 1 of the pen-type electric tool machine according to the embodiment of the present invention has various shapes, and each manufacturer designs the housing differently, such as a double housing, a single housing, a covering type, etc., in this case, the upper housing and the lower housing are used as representations (as shown in the drawings), but not limited to this shape; of course, the locking relationship of the housing 1 can also be fixed by screw insertion, tenon fastening, or locking by a screw ring 11 at the rear end of the housing 1 as shown in the drawings, and the power input 41 can be correspondingly connected to an external power source, or a power supply terminal of a built-in battery.

When the circuit board 4 is installed in the housing 1, the speed regulator 42 can be exposed on the surface of the housing 1 to allow a user to operate and control the rotation speed of the power source 3 (as a control switch function), further, the power source 3 can adopt a motor, a fan 23 for heat dissipation can be arranged on the axis assembly 2 at the position where the output shaft end of the power source 3 is correspondingly assembled with the axis assembly 2, so that the axis assembly 2 can rotate together with the fan 23 while rotating, and the high temperature generated by the power source 3 can be effectively dissipated. Then, the clamping part 21 at the front end of the shaft center assembly 2 is located outside the housing 1, and can clamp a fitting through the clamping part 21, for example: the production tools used by users such as sculpturing staff, prototype staff, manicurist, and tooth mold technician, such as sculpturing knife fittings, grinding knife fittings, etc., are locked outside the clamping part 21 via the locking member 22 to lock the fittings.

In addition, referring to fig. 1 to 4, when a user operates and holds the pen-type electric power tool, a handle sleeve 5 can be disposed outside the front end of the housing 1 and behind the locking member 22, and the handle sleeve 5 is used for the user to conveniently hold. When the user replaces the accessory, a shaft center fixing member 6 can be further inserted into the housing 1 at a position corresponding to the shaft center assembly 2, so that the user can position the shaft center assembly 2 by using the shaft center fixing member 6 without rotating, thereby facilitating the replacement of the accessory (as shown in fig. 4).

Referring to fig. 1 to 4, when the pen-type electric tool is used for engraving and grinding, the power source 3 (motor) drives the fitting at the front end of the axis assembly 2 to contact the workpiece, the rotation speed of the power source 3 (motor) is reduced by the friction force naturally generated, and naturally, the rotation speed of the power source 3 (motor) is changed into various high and low values according to the difference of the force applied by the user, and at this time, the voltage and current in the rotation speed change of the power source 3 (motor) can be analyzed by the torque and rotation speed adjusting unit 43 built in the circuit substrate, and the effect of "similar constant speed" can be automatically finely adjusted and simulated by the programming calculation of the torque and rotation speed adjusting unit 43.

Through the aforesaid, the utility model discloses a use the implementation explanation can know, the utility model discloses compare with prior art means under, the utility model discloses mainly have following advantage:

1. the embodiment of the utility model provides a pen type electric tool machine, set up in the low gear at power rotational speed, torsion is little to hardly there is practical use's value, the motor stops immediately after the accessory contacts by the work piece, through the technique of torsion and rotational speed regulating unit of built-in on the circuit substrate, can adjust the motor that will stop through "torsion automatic compensation", and calculate the regulating transformer output through programming, make the rotational speed force resume near the gear of original setting, it slows down easily because of the resistance gradually, stop, greatly increased pen type electric tool machine in the practicality of low rotational speed.

2. The embodiment of the utility model provides a pen type electric tool machine, through the technique of torsion and rotational speed regulating unit of built-in on circuit substrate, need not external collocation auxiliary usefulness's regulation controller, reaches convenient to use, convenient to carry's efficiency.

Claims (5)

1. A pen-type electric tool machine, comprising:

a housing;

a shaft center component correspondingly arranged in the shell, wherein one end of the shaft center component is connected with a power source, the other end of the shaft center component is provided with a clamping part for clamping accessories, the clamping part protrudes out of the shell, and the outside of the clamping part is provided with a locking piece for locking the accessories;

the circuit substrate is arranged in the shell and connected with the power source, and a power input end and a speed regulator for controlling the rotating speed of the power source are constructed on the circuit substrate;

the circuit substrate is provided with a torsion and rotation speed adjusting unit which is positioned in the shell and can automatically adjust the rotation speed of the power source according to external factors.

2. The pen-type electric tool of claim 1, further comprising a grip sleeve correspondingly fitted over the exterior of the front end of the housing and behind the locking member, the grip sleeve serving a gripping function for a user.

3. The pen-type electric tool machine according to claim 1 or 2, further comprising a shaft center fixing member, wherein the shaft center fixing member is assembled on the housing and corresponds to the shaft center component, and the shaft center fixing member is used for positioning the shaft center component not to rotate.

4. A pen power tool as claimed in claim 3 wherein a heat dissipating fan is provided at the end of said spindle assembly opposite said power source.

5. The pen-type electric tool machine of claim 3, wherein the power source employs a motor.

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