CN215751663U - Stroke adjusting mechanism of lettering pen and electric lettering pen applying stroke adjusting mechanism - Google Patents

Abstract

The utility model discloses a stroke adjusting mechanism of a lettering pen and an electric lettering pen using the stroke adjusting mechanism, and belongs to the field of lettering pens. The stroke adjusting mechanism of the lettering pen comprises a stroke adjusting wheel and an adjusting shifting button, wherein the stroke adjusting wheel is rotatably arranged at the front end of the outer side of a shell of the lettering pen, the adjusting shifting button is movably sleeved on the outer side of an impact shaft of the lettering pen, the front end surface of the adjusting shifting button is in butt fit with a limiting bulge on the impact shaft, an inclined plane boss in butt fit with a boss on the shell is arranged on the rear end surface of the adjusting shifting button, and the outer side of the adjusting shifting button penetrates through an opening formed in the shell and then is in axial movable fit with the stroke adjusting wheel. The stroke adjusting wheel is used for controlling the adjusting dial button to rotate, the adjusting dial button is driven to move back and forth under the action of the inclined boss, the initial position of the impact shaft in the shell is further adjusted, the axial vibration amplitude of the impact shaft is adjusted, the lettering pen has a stroke adjusting function, and the stroke adjusting mechanism has the advantages of simple stroke adjusting structure, flexible and stable operation and the like.

Description

Stroke adjusting mechanism of lettering pen and electric lettering pen applying stroke adjusting mechanism

Technical Field

The utility model relates to a lettering pen, in particular to a stroke adjusting mechanism of the lettering pen and an electric lettering pen applying the stroke adjusting mechanism.

Background

The lettering pen is a necessary tool for carving work. The traditional lettering pen is mainly manual, and the carving work efficiency is low and is very laborious. Pneumatic and electric lettering pens also exist in the market at present, the pneumatic lettering pen takes an air source as power, is clean and pollution-free, but needs to be connected with the air source for use, and has higher requirements on use conditions; the electric lettering pen can be divided into an alternating current electric lettering pen and a direct current electric lettering pen, is relatively flexible to use and is more widely applied.

The drive mode of the existing alternating current electric lettering pen mainly adopts the high-frequency vibration of the electromagnet to drive the high-frequency vibration of the pen point, can only adopt an alternating current power supply to drive, needs an external 220V power supply to use, and the oscillation of the electromagnet is easily conducted to the hand of a user, so that the carving is easy to cause deviation, the carving accuracy is slightly poor, the electromagnet is high in cost, and the service life is short. The direct current electric lettering pen is mostly driven by a motor, the rotary motion of the motor is converted into the reciprocating vibration of a pen point, the working principle of the direct current electric lettering pen is similar to that of a percussion drill, the conversion of the rotary motion and the reciprocating vibration is realized by utilizing the relative rotation of two vibrating blocks with concave-convex tooth-shaped end surfaces, the defects of the electromagnet type alternating current lettering pen are overcome, but the impact force of the pen point is directly transmitted to an output shaft of the motor, the axial acting force which can be borne by the output shaft of the motor is generally small, and therefore the quality requirement of the motor is high.

In addition, to different sculpture requirements, the vibration stroke of nib usually need be adjusted to satisfy the sculpture needs of the different degree of depth, and current pen of carving characters does not have pen clip vibration stroke regulatory function mostly, only can change the vibration frequency of nib, just is difficult to the stable control sculpture degree of depth to some meticulous sculpture, brings certain inconvenience for the use of pen of carving characters.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome the defect that the existing lettering pen does not have a stroke adjusting function, and provides a lettering pen stroke adjusting mechanism and an electric lettering pen applying the same.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

the stroke adjusting mechanism of the lettering pen comprises a stroke adjusting wheel and an adjusting shifting button, wherein the stroke adjusting wheel is rotatably arranged at the front end of the outer side of a shell of the lettering pen, the adjusting shifting button is movably sleeved on the outer side of an impact shaft of the lettering pen, the front end surface of the adjusting shifting button is in butt fit with a limiting bulge on the impact shaft, an inclined plane boss in butt fit with a boss on the shell is arranged on the rear end surface of the adjusting shifting button, a reset spring for resetting the impact shaft is arranged between the impact shaft and the shell, and the outer side of the adjusting shifting button penetrates through an opening formed in the shell and then is in axial movable fit with the stroke adjusting wheel.

Furthermore, the front end of the shell is provided with a regulating wheel rotating step, the stroke regulating wheel is sleeved on the regulating wheel rotating step in a rotating mode, and a rotary positioning mechanism is further arranged between the regulating wheel rotating step and the stroke regulating wheel.

Furthermore, the rotary positioning mechanism comprises a positioning groove arranged on the step of the regulating wheel and a plurality of positioning bulges arranged on the inner side of the stroke regulating wheel, and the positioning bulges and the positioning groove are clamped and positioned when the stroke regulating wheel rotates.

Further, the regulation dial button include axle sleeve, sector and shifting block, axle sleeve, sector and shifting block integrated into one piece, the axle hole normal running fit of lateral wall and casing front end of axle sleeve, the center of axle sleeve be equipped with impact shaft axial sliding fit's through-hole, the preceding terminal surface of axle sleeve and the epaxial spacing protruding butt cooperation of impact, the sector locate on the lateral wall of axle sleeve, the inclined plane boss locate on the rear end face of sector, the shifting block locate the outside of sector, and the shifting block passes the opening that sets up on the casing and is connected with the inboard draw-in groove circumference block of stroke control wheel.

Furthermore, the front end of the shell is in threaded connection with a front end cap, and the front end cap axially limits the stroke adjusting wheel on the adjusting wheel rotating step.

Furthermore, the limiting bulge on the impact shaft is a lug integrally formed on the outer wall of the impact shaft, the impact shaft is further sleeved with a check ring positioned at the front end of the lug, the reset spring is sleeved on the impact shaft, the front end of the reset spring is abutted on the front end cap, and the rear end of the reset spring is abutted on the check ring.

The utility model relates to an electric lettering pen which comprises a shell, a motor, a transmission mechanism, an impact shaft and a return spring, wherein the motor is fixedly arranged in the shell, the impact shaft is axially and movably arranged at the front end of the shell, the tail end of the impact shaft is in transmission connection with the motor through the transmission mechanism, the return spring is arranged between the impact shaft and the shell, and the front end of the electric lettering pen is provided with the lettering pen stroke adjusting mechanism.

Furthermore, the transmission mechanism comprises a cam and a lever arm, the cam is in transmission connection with an output shaft of the motor, one end of the lever arm is rotatably installed in the shell, a rotating shaft of the lever arm is perpendicular to a wheel shaft of the cam, the other end of the lever arm is abutted against the outer contour of the cam, and the tail end of the impact shaft is abutted against and matched with the front end face of the lever arm.

Furthermore, the cam is also provided with a balance block, the lever arm is rotatably arranged on the shell through a pin shaft, and the end part of one end of the lever arm, which is far away from the pin shaft, is also provided with a driving wheel matched with the cam.

Further, the casing include half shell on the left side and half shell on the right side, half shell on the left side and half shell on the right side pass through screw fixed connection, the casing in still be equipped with battery and control module, control module be connected with battery and motor electricity respectively for carry out DC drive to the motor.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

(1) the stroke adjusting mechanism of the lettering pen comprises a stroke adjusting wheel and an adjusting dial button, wherein the stroke adjusting wheel is rotatably arranged at the front end of the outer side of a shell of the lettering pen, the adjusting dial button is movably sleeved at the outer side of an impact shaft of the lettering pen, the front end surface of the adjusting dial button is in butt fit with a limiting bulge on the impact shaft, the rear end surface of the adjusting dial button is provided with an inclined surface boss in butt fit with the boss on the shell, a reset spring for resetting the impact shaft is arranged between the impact shaft and the shell, the outer side of the adjusting dial button passes through an opening arranged on the shell and then is in axial movable fit with the stroke adjusting wheel, the adjusting dial button is controlled by the stroke adjusting wheel to rotate, the adjusting dial button is driven to move back and forth under the action of the inclined surface boss, the initial position of the impact shaft in the shell is adjusted, the adjustment of the axial vibration amplitude of the impact shaft is realized, and the lettering pen has a stroke adjusting function, the carving depth can be conveniently controlled, and the device has the advantages of simple stroke adjusting structure, flexible and stable operation and the like;

(2) according to the stroke adjusting mechanism of the lettering pen, the adjusting wheel rotating step is arranged at the front end of the shell, the stroke adjusting wheel is sleeved on the adjusting wheel rotating step in a rotating mode, the rotary positioning mechanism is arranged between the adjusting wheel rotating step and the stroke adjusting wheel, the stroke adjusting wheel can be stably positioned by the aid of the rotary positioning mechanism, multi-stage stroke adjustment can be achieved, and stability can be kept after amplitude adjustment of the impact shaft is guaranteed;

(3) the stroke adjusting mechanism of the lettering pen comprises a positioning groove arranged on a rotating step of an adjusting wheel and a plurality of positioning bulges arranged on the inner side of the stroke adjusting wheel, wherein the positioning bulges and the positioning groove are clamped and positioned when the stroke adjusting wheel rotates;

(4) according to the stroke adjusting mechanism of the lettering pen, the adjusting shifting button comprises the shaft sleeve, the sector block and the shifting block, the outer side wall of the shaft sleeve is in rotating fit with the shaft hole in the front end of the shell, so that the adjusting shifting button is stable in rotation, the axial stability of the impact shaft is ensured, the sector block is more convenient for designing the inclined boss, the shifting block is convenient for connecting the adjusting shifting button with the stroke adjusting wheel, and the structure is simpler and more compact;

(5) according to the stroke adjusting mechanism of the lettering pen, the front end of the shell is in threaded connection with the front end cap, the stroke adjusting wheel is axially limited on the adjusting wheel rotating step by the front end cap, the stroke adjusting wheel is axially limited by the front end cap, and the stroke adjusting wheel is convenient to assemble;

(6) according to the stroke adjusting mechanism of the lettering pen, the limiting bulge on the impact shaft is the lug integrally formed on the outer wall of the impact shaft, the impact shaft is further sleeved with the check ring positioned at the front end of the lug, and the impact shaft is simple in structure and convenient to manufacture;

(7) according to the electric lettering pen, the stroke adjusting mechanism of the lettering pen is arranged at the front end of the electric lettering pen, so that the stroke adjusting function of the lettering pen is realized, the lettering pen is more flexible and convenient to use, and the engraving operation is more accurate and stable;

(8) the transmission mechanism of the electric lettering pen comprises the cam and the lever arm, the motor drives the cam to rotate, the cam drives the lever arm to swing in a reciprocating manner, and further drives the impact shaft to vibrate in a reciprocating manner, the rotating motion of the motor is converted into reciprocating oscillation through the cam and the lever and is transmitted to the impact shaft, so that the motor is free from axial acting force, the working stability of the motor is improved, and the service life of the motor is prolonged; in addition, by utilizing the lever principle, the impact shaft can be driven to work with larger force by applying smaller force to the lever arm by the cam, and the force applied to the cam by the counter acting force of the impact shaft through the lever arm is also smaller, so that the output impact force of the impact shaft is larger, and the working performance and the stability of the electric lettering pen are further improved;

(9) according to the electric lettering pen, the cam is further provided with the balance block, the lever arm is rotatably arranged on the shell through the pin shaft, and the end part of the lever arm, far away from the pin shaft, is further provided with the driving wheel matched with the cam, so that the lettering pen is more stable in driving, lighter in vibration and easier to control in operation, and the carving accuracy of the lettering pen is improved;

(10) the shell of the electric lettering pen comprises a left half shell and a right half shell, the left half shell and the right half shell are fixedly connected through screws, a battery and a control module are further arranged in the shell, and the control module is respectively electrically connected with the battery and a motor and used for carrying out direct current driving on the motor.

Drawings

FIG. 1 is a schematic view of an electric lettering pen according to the present invention;

FIG. 2 is a schematic diagram of an internal structure of an electric lettering pen according to the present invention;

FIG. 3 is a schematic diagram of a disassembled structure of an electric lettering pen of the utility model;

FIG. 4 is a schematic cross-sectional structural view of a stroke adjusting mechanism of a lettering pen of the utility model;

FIG. 5 is a schematic view of a matching structure of a stroke adjusting wheel and an adjusting toggle button in the stroke adjusting mechanism of the lettering pen of the utility model;

FIG. 6 is a schematic diagram showing a disassembled state of a stroke adjusting wheel in the stroke adjusting mechanism of the lettering pen of the utility model;

FIG. 7 is a schematic structural diagram of a stroke adjusting wheel in the stroke adjusting mechanism of the lettering pen of the utility model;

fig. 8 is a schematic structural diagram of an adjusting toggle button in the stroke adjusting mechanism of the lettering pen of the utility model.

The reference numerals in the schematic drawings illustrate:

1. a housing; 1a, a left half shell; 1b, a right half shell; 1-1, adjusting a wheel rotating step; 1-2, positioning grooves; 1-3, external threads; 1-4, opening; 1-5, boss; 2. a front end cap; 2-1, internal threads; 3. an impact shaft; 3-1, lugs; 3-2, a check ring; 4. a stroke adjusting wheel; 4-1, a clamping groove; 4-2, positioning protrusions; 5. adjusting a toggle button; 5-1, an inclined plane boss; 5-2, shaft sleeve; 5-3, fan-shaped blocks; 5-4, shifting blocks; 6. a motor; 7. a cam; 7-1, a balance block; 8. a lever arm; 8-1, a transmission wheel; 9. a pin shaft; 10. a battery; 11. a control module; 12. a return spring.

Detailed Description

For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

[ example 1]

Referring to fig. 1 to 8, the stroke adjusting mechanism of the lettering pen of this embodiment is installed at the front end of the lettering pen, and includes a stroke adjusting wheel 4 and an adjusting dial button 5, the stroke adjusting wheel 4 is of a circular structure, the stroke adjusting wheel 4 is rotatably installed at the front end of the outer side of a casing 1 of the lettering pen, the adjusting dial button 5 is movably sleeved on the outer side of an impact shaft 3 of the lettering pen, the front end surface of the adjusting dial button 5 is in abutting fit with a limit protrusion on the impact shaft 3, the rear end surface of the adjusting dial button 5 is provided with an inclined surface boss 5-1 in abutting fit with a boss 1-5 on the casing 1, a reset spring 12 for resetting the impact shaft 3 is arranged between the impact shaft 3 and the casing 1, and the outer side of the adjusting dial button 5 is axially movably fit with the stroke adjusting wheel 4 after passing through an opening 1-4 provided on the casing 1. When the stroke adjusting wheel 4 is rotated, the stroke adjusting wheel 4 drives the adjusting shifting button 5 to rotate, the contact position of the inclined plane boss 5-1 and the boss 1-5 on the shell 1 is changed, the adjusting shifting button 5 moves back and forth along the axial direction of the impact shaft 3, and the impact shaft 3 also adjusts the shifting button 5 to move under the action of the reset spring 12, so that the matching position of the impact shaft 3 and a mechanical transmission mechanism driving the impact shaft to vibrate axially can be changed, and the adjustment of the vibration amplitude of the impact shaft 3 is realized.

As shown in fig. 5, 6 and 7, the front end of the housing 1 is provided with a regulating wheel rotating step 1-1, the stroke regulating wheel 4 is rotatably sleeved on the regulating wheel rotating step 1-1, and a rotary positioning mechanism is further arranged between the regulating wheel rotating step 1-1 and the stroke regulating wheel 4, so that the stroke regulating wheel 4 can be stably positioned by using the rotary positioning mechanism, multi-stage stroke regulation can be realized, and stability can be maintained after amplitude regulation of the impact shaft 3 is ensured. Specifically, in this embodiment, the above-mentioned rotary positioning mechanism includes a positioning groove 1-2 disposed on the adjusting wheel rotating step 1-1 and a plurality of positioning protrusions 4-2 disposed on the inner side of the stroke adjusting wheel 4, and the positioning protrusions 4-2 and the positioning groove 1-2 are clamped and positioned when the stroke adjusting wheel 4 rotates. As shown in fig. 7, three positioning protrusions 4-2 are provided, so that three-level stroke adjustment can be realized, and when the stroke adjusting wheel 4 rotates one grid, the corresponding positioning protrusions 4-2 are controlled to be clamped with the positioning grooves 1-2.

As shown in fig. 5 and 8, in this embodiment, the adjusting dial 5 includes a shaft sleeve 5-2, a sector 5-3 and a dial 5-4, the shaft sleeve 5-2, the sector 5-3 and the dial 5-4 are integrally formed, an outer side wall of the shaft sleeve 5-2 is rotatably fitted with a shaft hole at a front end of the housing 1, a through hole axially slidably fitted with the impact shaft 3 is formed in a center of the shaft sleeve 5-2, a front end surface of the shaft sleeve 5-2 is in abutting fit with a limit protrusion on the impact shaft 3, the sector 5-3 is provided on an outer side wall of the shaft sleeve 5-2, an inclined boss 5-1 is provided on a rear end surface of the sector 5-3, the dial 5-4 is provided on an outer side of the sector 5-3, and the shifting block 5-4 penetrates through an opening 1-4 arranged on the shell 1 to be connected with a clamping groove 4-1 on the inner side of the stroke adjusting wheel 4 in a circumferential clamping manner. In the rotating process of the stroke adjusting wheel 4, the adjusting shifting button 5 can rotate and move back and forth through the shifting blocks 5-4, the adjusting shifting button 5 rotates stably, the axial stability of the impact shaft 3 is guaranteed, the sector blocks 5-3 are more convenient for designing the inclined plane boss 5-1, the shifting blocks 5-4 are convenient for connecting the adjusting shifting button 5 with the stroke adjusting wheel 4, and the structure is simpler and more compact.

As shown in fig. 1 to 6, the front end of the housing 1 is connected with a front end cap 2 through threads, and the front end cap 2 axially limits the stroke adjusting wheel 4 on the adjusting wheel rotating step 1-1. Specifically, the front end of the shell 1 is provided with external threads 1-3, the inner side of the front end cap 2 is provided with internal threads 2-1, the diameter of the rear end face of the front end cap 2 is slightly larger than that of the rotating step 1-1 of the regulating wheel, and after the front end cap 2 is in threaded connection with the front end of the shell 1, the rear end face of the front end cap 2 can stably limit the stroke regulating wheel 4 on the rotating step 1-1 of the regulating wheel, so that the stroke regulating wheel 4 can only rotate but cannot move axially. The front end cap 2 is utilized to realize the axial limit of the stroke adjusting wheel 4, so that the assembly of the stroke adjusting wheel 4 is convenient.

As shown in fig. 4, in this embodiment, the limiting protrusion on the impact shaft 3 is a lug 3-1 integrally formed on the outer wall of the impact shaft 3, the rear end of the lug 3-1 abuts against the front end face of the shaft sleeve 5-2 of the adjusting toggle 5, the impact shaft 3 is further sleeved with a retaining ring 3-2 located at the front end of the lug 3-1, the reset spring 12 is sleeved on the impact shaft 3, the front end of the reset spring 12 abuts against the front end cap 2, and the rear end of the reset spring 12 abuts against the retaining ring 3-2, so that the impact shaft 3 has a simple structure and is convenient to manufacture.

The stroke adjusting mechanism of the lettering pen of this embodiment utilizes the stroke control wheel control to adjust and dial the button and rotate, drives under the inclined plane boss effect and adjusts the back-and-forth movement of dialling the button, and then adjusts the initial position of impact shaft in the casing, realizes the regulation of impact shaft axial vibration range, makes the lettering pen have the stroke regulatory function, can conveniently control the sculpture degree of depth, has advantages such as stroke regulation simple structure, flexible operation are stable.

[ example 2]

As shown in fig. 1, 2 and 3, the present embodiment is an electric lettering pen, which includes a housing 1, a motor 6, a transmission mechanism, an impact shaft 3 and a return spring 12, wherein the motor 6 is fixedly installed in the housing 1, the impact shaft 3 is axially movably installed at the front end of the housing 1, the tail end of the impact shaft 3 is in transmission connection with the motor 6 through the transmission mechanism, the return spring 12 is disposed between the impact shaft 3 and the housing 1, the motor 6 drives the impact shaft 3 to axially move through the transmission mechanism, and the impact shaft 3 is moved forward and then returned backward under the action of the return spring 12, so as to achieve the reciprocating motion of the impact shaft 3. Different from the structure of the existing electric lettering pen: in this embodiment, the front end of the electric lettering pen is provided with the stroke adjusting mechanism of the lettering pen in embodiment 1, so that the stroke adjusting function of the lettering pen is realized, the use of the lettering pen is more flexible and convenient, and the engraving operation is more accurate and stable.

As shown in fig. 2 and 3, in this embodiment, the transmission mechanism includes a cam 7 and a lever arm 8, the cam 7 is in transmission connection with an output shaft of the motor 6, the cam 7 can be directly connected with the output shaft of the motor 6, one end of the lever arm 8 is rotatably installed in the housing 1, a rotating shaft of the lever arm 8 is perpendicular to a wheel shaft of the cam 7, the other end of the lever arm 8 abuts against an outer contour of the cam 7, the cam 7 rotates to drive the lever arm 8 to swing, the tail end of the impact shaft 3 abuts against and is matched with a front end face of the lever arm 8, and the lever arm 8 swings to drive the impact shaft 3 to vibrate back and forth. By adopting the lever transmission structure, the motor 6 drives the cam 7 to rotate, the cam 7 drives the lever arm 8 to swing in a reciprocating manner, so as to drive the impact shaft 3 to vibrate in a reciprocating manner, the rotating motion of the motor 6 is converted into reciprocating oscillation through the cam 7 and the lever and is transmitted to the impact shaft 3, so that the motor 6 is free from axial acting force, the working stability of the motor 6 is improved, and the service life of the motor 6 is prolonged; and, by utilizing the lever principle, the impact shaft 3 can be driven to work with larger force by applying smaller force to the lever arm 8 by the cam 7, the force applied to the cam 7 by the counter acting force of the impact shaft 3 through the lever arm 8 is also smaller, the output impact force of the impact shaft 3 can be larger, and the working performance and the stability of the electric lettering pen are further improved.

As shown in fig. 2 and 3, in the present embodiment, a balance weight 7-1 is further disposed on the cam 7, so that the cam 7 rotates more stably, and the eccentric vibration of the cam 7 can be reduced; the lever arm 8 is rotatably arranged on the shell 1 through a pin shaft 9, and the lever arm 8 can swing flexibly; the end part of one end of the lever arm 8, which is far away from the pin shaft 9, is also provided with a driving wheel 8-1 matched with the cam 7, the lever arm 8 preferably adopts an L-shaped structure, and the friction between the driving wheel 8-1 and the cam 7 is reduced by utilizing the matching of the driving wheel 8-1 and the cam 7, so that the transmission of the lettering pen is more stable, the vibration is lighter, the operation is easier to control, and the carving accuracy of the lettering pen is improved by utilizing the driving wheel.

As shown in fig. 3, the housing 1 in this embodiment includes a left half-shell 1a and a right half-shell 1b, and the left half-shell 1a and the right half-shell 1b are fixedly connected by screws, so as to facilitate assembly and manufacture of the electric lettering pen; the casing 1 is also internally provided with a battery 10 and a control module 11, and the control module 11 is electrically connected with the battery 10 and the motor 6 respectively and is used for driving the motor 6 by direct current. The battery 10 can be a rechargeable lithium battery, and the control module 11 is further provided with a charging circuit and a switch control circuit to realize the direct current control of the electric lettering pen. The driving voltage of the control module 11 to the motor 6 is preferably 3.7V to 18V. And the direct current drive is adopted, an external power supply is not required, and the use is more flexible and convenient. The circuit control principle of the electric lettering pen is the same as that of the existing direct current electric lettering pen, and the details are not described herein.

According to the stroke adjusting mechanism of the lettering pen and the electric lettering pen applying the stroke adjusting mechanism, the stroke adjusting wheel is used for controlling the adjusting shifting button to rotate, the adjusting shifting button is driven to move back and forth under the action of the inclined boss, the initial position of the impact shaft in the shell is further adjusted, the axial vibration amplitude of the impact shaft is adjusted, the lettering pen has a stroke adjusting function, and the stroke adjusting mechanism has the advantages of being simple in stroke adjusting structure, flexible and stable in operation and the like. The stroke adjusting mechanism is used for adjusting the stroke of the lettering pen, so that the lettering pen is more flexible and convenient to use, and the carving operation is more accurate and stable.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims (10)

1. The utility model provides a stroke adjustment mechanism of lettering pen which characterized in that: including stroke control wheel (4) and regulation dial button (5), stroke control wheel (4) rotate and locate casing (1) outside front end of lettering pen, regulation dial button (5) movable sleeve establish in the impact shaft (3) outside of lettering pen, and adjust dial the cooperation of spacing protruding butt on preceding terminal surface and the impact shaft (3) of button (5), the regulation dial the rear end face of button (5) on be equipped with casing (1) on boss (1) butt complex inclined plane boss (5-1), impact shaft (3) and casing (1) between be equipped with reset spring (12) that are used for impact shaft (3) to reset, the outside of regulation dial button (5) pass behind opening (1-4) that set up on casing (1) with stroke control wheel (4) axial clearance fit.

2. The stroke adjusting mechanism of the lettering pen as claimed in claim 1, wherein: the front end of the shell (1) is provided with a regulating wheel rotating step (1-1), the stroke regulating wheel (4) is sleeved on the regulating wheel rotating step (1-1) in a rotating way, and a rotary positioning mechanism is further arranged between the regulating wheel rotating step (1-1) and the stroke regulating wheel (4).

3. The stroke adjusting mechanism of the lettering pen as claimed in claim 2, wherein: the rotary positioning mechanism comprises a positioning groove (1-2) arranged on a rotating step (1-1) of the regulating wheel and a plurality of positioning protrusions (4-2) arranged on the inner side of the stroke regulating wheel (4), and the positioning protrusions (4-2) and the positioning groove (1-2) are clamped and positioned when the stroke regulating wheel (4) rotates.

4. A stroke adjustment mechanism of a lettering pen according to claim 1, 2 or 3, wherein: the adjustable shifting knob (5) comprises a shaft sleeve (5-2), a sector block (5-3) and a shifting block (5-4), the shaft sleeve (5-2), the sector block (5-3) and the shifting block (5-4) are integrally formed, the outer side wall of the shaft sleeve (5-2) is in running fit with a shaft hole in the front end of the shell (1), a through hole in axial sliding fit with the impact shaft (3) is formed in the center of the shaft sleeve (5-2), the front end face of the shaft sleeve (5-2) is in butt fit with a limiting bulge on the impact shaft (3), the sector block (5-3) is arranged on the outer side wall of the shaft sleeve (5-2), the inclined boss (5-1) is arranged on the rear end face of the sector block (5-3), the shifting block (5-4) is arranged on the outer side of the sector block (5-3), and the shifting block (5-4) penetrates through an opening (1-4) arranged on the shell (1) and is connected with a clamping groove (4-1) on the inner side of the stroke adjusting wheel (4) in a circumferential clamping manner.

5. The stroke adjustment mechanism of the lettering pen as claimed in claim 4, wherein: the front end of the shell (1) is in threaded connection with a front end cap (2), and the front end cap (2) axially limits the stroke adjusting wheel (4) on the adjusting wheel rotating step (1-1).

6. The stroke adjustment mechanism of the lettering pen as claimed in claim 5, wherein: the impact mechanism is characterized in that the limiting bulge on the impact shaft (3) is a lug (3-1) integrally formed on the outer wall of the impact shaft (3), the impact shaft (3) is further sleeved with a check ring (3-2) located at the front end of the lug (3-1), the reset spring (12) is sleeved on the impact shaft (3), the front end of the reset spring (12) abuts against the front end cap (2), and the rear end of the reset spring (12) abuts against the check ring (3-2).

7. The utility model provides an electronic pen of carving characters, includes casing (1), motor (6), drive mechanism, impact shaft (3) and reset spring (12), motor (6) fixed mounting in casing (1), impact shaft (3) axial movable mounting in the front end of casing (1), and the tail end of impact shaft (3) passes through drive mechanism and is connected with motor (6) transmission, reset spring (12) locate between impact shaft (3) and casing (1), its characterized in that: the front end of the electric lettering pen is provided with the stroke adjusting mechanism of the lettering pen as claimed in any one of claims 1 to 6.

8. The electric lettering pen as claimed in claim 7, wherein: the transmission mechanism comprises a cam (7) and a lever arm (8), the cam (7) is in transmission connection with an output shaft of the motor (6), one end of the lever arm (8) is rotatably installed in the shell (1), a rotating shaft of the lever arm (8) is perpendicular to a wheel shaft of the cam (7), the other end of the lever arm (8) is abutted to the outer contour of the cam (7), and the tail end of the impact shaft (3) is abutted and matched with the front end face of the lever arm (8).

9. The electric lettering pen as claimed in claim 8, wherein: the cam (7) is further provided with a balance block (7-1), the lever arm (8) is rotatably arranged on the shell (1) through a pin shaft (9), and the end part of one end, far away from the pin shaft (9), of the lever arm (8) is further provided with a driving wheel (8-1) matched with the cam (7).

10. The electric lettering pen as claimed in claim 9, wherein: casing (1) including left half shell (1a) and right half shell (1b), left half shell (1a) and right half shell (1b) pass through screw fixed connection, casing (1) in still be equipped with battery (10) and control module (11), control module (11) be connected with battery (10) and motor (6) electricity respectively for carry out DC drive to motor (6).

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