阅读说明：本技术 一种喷笔气泵及其喷笔气泵无级变速开关 (Air pump of ink-jet pen and stepless speed change switch of air pump of ink-jet pen ) 是由 董翠兰 于 2020-05-26 设计创作，主要内容包括：本发明所公开的一种喷笔气泵及其喷笔气泵无级变速开关,出气孔位置处安装有压力感应装置和具有通道的按压件,且压力感应装置上设置有通孔,按压件的底端接触压力感应装置的压力感应部,压力感应装置的压力感应部用于感应按压件的按压力；压力感应装置引出导线与喷笔气泵的空压机或空压机上的主控线路板相连。利用了喷笔气阀控制压杆触碰压力感应装置的压力感应部,由手指下压的力度不同而影响压力数值变化,从而利用其压力的数值变化使手持充电式一体气泵具有了自动启停以及无级调速功能,使得使用较为便捷,解决了现有技术中手持充电式一体气泵的调速只能固定档位即固定转速的缺陷,大大提升了喷笔的使用性能。(According to the air pump of the spray pen and the stepless speed change switch of the air pump of the spray pen, the position of the air outlet hole is provided with the pressure sensing device and the pressing piece with the channel, the pressure sensing device is provided with the through hole, the bottom end of the pressing piece is contacted with the pressure sensing part of the pressure sensing device, and the pressure sensing part of the pressure sensing device is used for sensing the pressing force of the pressing piece; the lead-out wire of the pressure sensing device is connected with an air compressor of the air pump of the spray pen or a main control circuit board on the air compressor. The forced induction portion that has utilized the pneumatic valve control depression bar of spray pen to touch forced induction device, the dynamics of pushing down by the finger is different and influence the pressure numerical value and change to utilize the numerical value of its pressure to change to make handheld rechargeable integrative air pump have automatic opening and stop and stepless speed regulation function, make to use comparatively convenient, the speed governing of having solved handheld rechargeable integrative air pump among the prior art can only the fixed gear be the defect of fixed rotational speed promptly, the performance of spray pen has been promoted greatly.)

1. The utility model provides a fountain pen air pump infinitely variable speed switch, includes the venthole, its characterized in that, venthole position department installs pressure-sensitive device and the pressing piece that has the passageway, and is provided with the through-hole on the pressure-sensitive device, and the bottom contact pressure-sensitive part of pressing piece pressure-sensitive device, pressure-sensitive part of pressure-sensitive device is used for responding to the pressing force of pressing piece.

2. The stepless speed change switch for air pump of airbrush according to claim 1, wherein the pressure sensing means is positioned at a step in the air outlet hole.

3. The stepless speed change switch for the air pump of the airbrush according to claim 1 or 2, wherein a port of the air outlet is provided with a connecting sleeve, and the pressing piece is connected with an inner hole of the connecting sleeve.

4. The stepless speed change switch for the air pump of the airbrush as claimed in claim 3, wherein a positioning ring body is disposed around the top port of the connecting sleeve, and the positioning ring body abuts against the top port of the air outlet hole.

5. The air pump stepless speed change switch of the airbrush according to claim 1 or 2, wherein a seal ring is provided between the bottom end of the pressing member and the pressure sensing device.

6. The stepless speed change switch for an air pump of a spray pen of claim 3, wherein a positioning convex ring is arranged at the bottom port of the inner hole of the connecting sleeve, and a sealing ring is arranged between the bottom end of the pressing piece and the positioning convex ring.

7. The stepless speed change switch for air pump of airbrush according to claim 2, wherein a seal ring is provided between the bottom surface of the pressure sensing means and the step of the air outlet hole.

8. The stepless speed change switch for the air pump of the airbrush according to claim 6, wherein the pressing member comprises a positioning sleeve, a pressing rod is disposed in an inner hole of the positioning sleeve, the channel is disposed on the positioning sleeve, a bottom end of the pressing rod contacts with a pressure sensing portion of the pressure sensing device, the positioning sleeve is connected with the air outlet hole or with an inner hole of the connecting sleeve, and a sealing ring is abutted between the bottom end of the positioning sleeve and the positioning convex ring.

9. The stepless speed change switch of the air pump of the air pen according to any one of claims 1 to 8, wherein the pressure sensing device comprises a conductive plate and a pressure sensing module fixed on the conductive plate, the pressure sensing module comprises a strain gauge, a U-shaped through hole is arranged on the conductive plate, a tongue piece is formed on the conductive plate through the U-shaped through hole, the position of the tongue piece corresponds to that of the pressing piece, the strain gauge is fixed at the position of an area formed by splicing the bottom surface of the tongue piece and the bottom surface of the conductive plate, and a lead is led out of the strain gauge; or

The pressure sensing device comprises a current conducting plate and a pressure sensing module fixed on the current conducting plate, the pressure sensing module comprises a strain gauge and a main control chip which are connected with each other, the current conducting plate is provided with a U-shaped through hole, a tongue piece is formed on the current conducting plate through the U-shaped through hole, the position of the tongue piece corresponds to that of the pressing piece, the strain gauge is fixed at the position of an area formed by splicing the bottom surface of the tongue piece and the bottom surface of the current conducting plate, and a lead is led out from the main;

preferably, the air outlet device further comprises a top cover, and the air outlet is formed in the top cover.

10. An air pump of a spray pen, which is characterized by comprising an air pump body and a stepless speed change switch as claimed in any one of claims 1 to 9, wherein an air outlet is arranged on the air pump body, and a lead of a pressure sensing device is connected with an air compressor of the air pump of the spray pen or a main control circuit board on the air compressor.

Technical Field

The invention relates to the technical field of air pump control switch structures, in particular to a spray pen air pump and a stepless speed change switch thereof.

Background

The spray pen is a widely used spray tool, and is additionally provided with a container capable of containing liquid pigment and a small tube connected with compressed air, and the liquid pigment is sprayed out of the spray pen through the spray pen and an air pump after being started, so that the uniform tone and color gradient level effect can be manufactured.

Disclosure of Invention

The invention aims to solve the technical defects and provides a spray pen air pump and a stepless speed change switch thereof.

The invention discloses a stepless speed change switch of an air pump of a spray pen, which comprises an air outlet, wherein a pressure sensing device and a pressing piece with a channel are arranged at the position of the air outlet, a through hole is formed in the pressure sensing device, the bottom end of the pressing piece is contacted with a pressure sensing part of the pressure sensing device, and the pressure sensing part of the pressure sensing device is used for sensing the pressing force of the pressing piece.

Preferably, the pressure sensing device is positioned at a step in the air outlet.

Preferably, a port of the air outlet is provided with a connecting sleeve, and the pressing piece is connected with an inner hole of the connecting sleeve.

Preferably, a positioning ring body is arranged on the periphery of the top port of the connecting sleeve and abuts against the top port of the air outlet hole.

Preferably, a sealing ring is arranged between the bottom end of the pressing piece and the pressure sensing device.

Preferably, a positioning convex ring is arranged at the bottom end opening of the inner hole of the connecting sleeve, and a sealing ring is arranged between the bottom end of the pressing piece and the positioning convex ring.

Preferably, a sealing ring is arranged between the bottom surface of the pressure sensing device and the step of the air outlet hole.

Preferably, the air conditioner further comprises a top cover, and the air outlet is formed in the top cover.

Preferably, the pressing piece comprises a positioning sleeve, a pressing rod is arranged in an inner hole of the positioning sleeve, the channel is arranged on the positioning sleeve, the bottom end of the pressing rod is abutted to a pressure sensing part of the pressure sensing device, the positioning sleeve is connected with the air outlet hole or connected with the inner hole of the connecting sleeve, and the bottom end of the positioning sleeve is abutted to the sealing ring between the positioning convex ring and the positioning convex ring.

Preferably, the pressure sensing device comprises a conductive plate and a pressure sensing module fixed on the conductive plate, the pressure sensing module comprises a strain gauge, the conductive plate is provided with a U-shaped through hole, a tongue piece is formed on the conductive plate through the U-shaped through hole, the position of the tongue piece corresponds to that of the pressing piece, the strain gauge is fixed at the position of an area formed by splicing the bottom surface of the tongue piece and the bottom surface of the conductive plate, and a lead is led out of the strain gauge; or

The pressure sensing device comprises a current conducting plate and a pressure sensing module fixed on the current conducting plate, the pressure sensing module comprises a strain gauge and a main control chip which are connected with each other, the current conducting plate is provided with a U-shaped through hole, a tongue piece is formed on the current conducting plate through the U-shaped through hole, the position of the tongue piece corresponds to that of the pressing piece, the strain gauge is fixed at the position of an area formed by splicing the bottom surface of the tongue piece and the bottom surface of the current conducting plate, and a lead is led out from the main;

the air pump comprises an air pump body and the stepless speed change switch, wherein the air outlet hole is formed in the air pump body, and the lead of the pressure sensing device is connected with an air compressor of the air pump of the spray pen or a main control circuit board on the air compressor.

The invention designs a spray pen air pump and a spray pen air pump stepless speed change switch thereof, the structure of the spray pen air pump realizes stepless speed change control of a mini handheld charging type double-acting spray pen air pump all-in-one machine, meanwhile, the spray pen air valve control pressure rod is utilized to touch a pressure sensing part of a pressure sensing device, the numerical value change of pressure is influenced by different pressing force of fingers, so that the handheld charging type integrated air pump has the functions of automatic start and stop and/or stepless speed regulation by utilizing the numerical value change of the pressure, the rotating speed of a motor of the air pump can reach the rotating speed unexpectedly from zero rotating speed, the air pump has better controllability, the structure is convenient to use, the defect that the speed regulation of the handheld charging type integrated air pump in the prior art can only fix the gear, namely fix the rotating speed is overcome, and the service performance of a spray pen.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 1;

FIG. 2 is a schematic structural view (I) of the pressure-sensitive device of embodiment 1;

fig. 3 is a schematic structural view (ii) of the pressure-sensitive device of embodiment 1;

FIG. 4 is an exploded view of example 1;

fig. 5 is a schematic structural view of the handheld rechargeable stepless speed change double-action air pump integrated machine of the airbrush of the embodiment 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.