CN210970523U - Detachable rear cover structure of handheld integrated spray pen - Google Patents

Abstract

The utility model discloses a detachable rear cover structure of a handheld integrated spray pen, which comprises a shell with a holding handle, wherein an upper holding cavity and a lower holding cavity are formed in the shell, the upper holding cavity of the shell is provided with a spray pen component, the lower holding cavity of the shell is provided with an air pump component, and the air pump component is used for introducing compressed air into the spray pen component; the operation button controls the operation of the spray pen assembly and the air pump assembly in the pressing stroke of the operation button; the rear end of the shell is provided with a detachably connected rear cover, and the rear cover corresponds to the tail part of the spray pen component; when the rear cover is removed, an opening is formed at the rear end of the housing. The utility model discloses integrate the spray pen subassembly and air pump subassembly in the casing to be provided with detachable back lid on the casing, so that take out the spare part of spray pen subassembly and wash or change.

Description

Detachable rear cover structure of handheld integrated spray pen

Technical Field

The utility model belongs to the technical field of the air pump air brush, concretely relates to handheld integral type air brush's back lid structure of dismantling.

Background

The spray pen is a tool similar to a super-large fountain pen in appearance, is provided with a container capable of containing liquid pigment and a connecting compressed air thin tube, and can produce a level effect with uniform color tone and color, so that the spray pen is widely applied to the fields of painting, makeup and the like.

The existing structure of the spray pen can be referred to Chinese utility model patent with the publication number of CN203389788U, which discloses a beauty spray pen, comprising a pen body which is connected by a front handle and a tail handle in a screwing way, wherein the interior of the pen body is provided with a cavity, the outer wall of the front handle is provided with a beauty liquid containing cavity communicated with the cavity, the other side of the front handle opposite to the screwing end is provided with a central hole for the beauty liquid to flow out, the central hole is provided with a nozzle, the nozzle is connected with the central hole through a thread, the beauty spray pen is provided with a spray needle, the spray needle is penetrated through the nozzle and the central hole, the spray needle is matched with the port of the nozzle to form a sealing surface, the front handle is provided with an; the pen body is provided with a button, the button is positioned right above the air valve, the tail end of the button is connected with a valve core of the air valve, the air valve is controlled to be opened and closed by radially pressing the button, a spray needle clamping device is arranged in the cavity, the spray needle is fixedly connected with the spray needle clamping device, and the button controls the spray needle clamping device to axially move by axially shifting so as to control the spray needle to move and adjust the spraying amount of the beauty fluid at the port of the spray nozzle; when the pen is used, the beauty fluid is placed in the beauty fluid containing cavity, the air valve is opened by pressing the button, the compressed air is introduced into the pen body cavity, and the axial movement of the spray needle is controlled by axially moving the button, so that the beauty fluid is extruded out of the nozzle by the compressed air; the spray pen uses the same button to simultaneously open the air valve and the spray needle, thereby simplifying the operation of the beauty spray pen.

If chinese utility model patent that publication number is CN208411279U discloses an air pump spray pen, it is integrated in an organic whole with air pump spray pen and battery module, solves the air pump spray pen and needs electric power to support and be not convenient for move the problem of operation. The control circuit board is arranged on the lower side of an operating button of the existing spray pen, the control key is arranged on the surface of the control circuit board, and the operating button is fixedly connected with the control circuit board through the control key so as to control the power supply of the battery module.

However, in the above technical solution, the air pump for providing compressed air and the air nozzle are separately arranged, that is, the air pump introduces compressed air into the cavity of the pen body of the air nozzle through an air pipe, so when a user operates the air nozzle, firstly, the existing button of the air nozzle is arranged on the upper side of the pen body, which is not convenient for the user to hold and operate, and secondly, the air pipe of the air pump interferes with the connection of the air nozzle, which causes inconvenience to the user in moving and operating.

Disclosure of Invention

To the not enough of above-mentioned prior art existence, the utility model aims at providing a lid structure after dismantling of handheld integral type spray pen, handheld integral type spray pen with spray pen subassembly and pump subassembly integration in the casing to be provided with the detachable back cover on the casing, so that take out the spare part of spray pen subassembly and wash or change.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is:

a detachable rear cover structure of a handheld integrated spray pen comprises a shell with a holding handle, wherein an upper accommodating cavity and a lower accommodating cavity are formed in the shell, a spray pen assembly is arranged in the upper accommodating cavity of the shell, an air pump assembly is arranged in the lower accommodating cavity of the shell, and the air pump assembly is used for introducing compressed air into the spray pen assembly; the operating button controls the operation of the spray pen component in the pressing stroke; the rear end of the shell is provided with a detachably connected rear cover, and the rear cover corresponds to the tail part of the spray pen component; when the rear cover is removed, an opening is formed at the rear end of the housing.

Furthermore, the rear cover is made of soft rubber, the two sides of the rear cover are provided with buckle belts, the buckle belts are provided with a plurality of positioning buckles, the two sides of the shell are provided with positioning holes matched with the positioning buckles, and the buckle belts are detachably and fixedly connected to the rear end of the shell through buckling of the positioning buckles and the positioning holes.

Furthermore, the rear cover is made of hard materials, and the rear cover is connected with the rear end of the shell in an inserting mode, a clamping mode or a threaded mode.

Furthermore, the spray pen assembly comprises a pen body, a containing cavity is formed in the pen body, the rear end of the pen body is connected with a spring sleeve, a clamping spring and a spray needle clamping shaft penetrating through the clamping spring are sleeved in the spring sleeve, the rear end of the spring sleeve is connected with a locking nut, two ends of the clamping spring respectively abut against the spray needle clamping shaft and the locking nut, and a spray needle which extends into the containing cavity and is matched with the central spray hole is clamped on the spray needle clamping shaft; the spring sleeve, the spray needle clamping shaft and the locking nut can be taken out of the shell from the opening.

Furthermore, the front end of the pen body is connected with a nozzle assembly, the front end of the shell is further provided with a front cover which can be detachably connected, and the front cover is sleeved on the position of the pen spraying assembly of the shell. The welding of handwriting upside has the copper cap, the upper end of casing still is equipped with the top cap of dismantling the connection, the top cap is equipped with the feed port that suits with the copper cap of spray pen subassembly. And an annular groove for mounting the sealing ring is further formed in the periphery of the copper cap.

Furthermore, an air inlet pipe joint is arranged beside the pen body.

Furthermore, a bottom cover which can be detachably connected is arranged at the lower end of the holding handle of the shell.

After the technical scheme is adopted, the utility model has the advantages that:

the utility model discloses install the integration of spray pen subassembly and air pump subassembly in the casing, this casing is provided with the detachable back lid, and when covering the back lid, the casing is whole to be closed structure, when pulling down the back lid, forms the opening corresponding with spray pen subassembly afterbody on the casing, can follow this opening position and dismantle the spare part of spray pen subassembly and take out to it washs or changes.

Drawings

The invention will be further described with reference to the following figures and examples:

fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is an exploded schematic view of the present invention.

Fig. 3 is a schematic structural diagram of the inside of the casing of the present invention.

Fig. 4 is a schematic view of the assembly structure inside the casing of the present invention.

Fig. 5 is a schematic top view of the pen assembly of the present invention.

Fig. 6 is a schematic structural diagram of the cooperation between the operating button and the jog switch of the present invention.

Fig. 7 is a schematic structural view of the operation button and the self-locking rebounding device of the present invention.

In the figure, 100, a holding handle, 10, a shell, 11, an upper accommodating cavity, 12, a lower accommodating cavity, 13, a mounting hole, 14, an opening, 15, a ring groove, 20, a spray pen assembly, 21, a pen body, 22, a copper cap, 23, a nozzle assembly, 24, a spring sleeve, 25, a spray needle clamping shaft, 26, a locking nut, 27, a spray needle, 28, an air inlet pipe connector, 30, an air pump assembly, 31, an air compressor pump body, 32, a motor, 33, an exhaust pipe connector, 40, a switch component, 41, a inching switch, 42, a contact, 43, a circuit board, 50, an operating button, 51, a first control part, 52, a second control part, 53, a third control part, 60, an elastic component, 70, a self-locking rebound, 71, a movable end, 80, a power supply component, 90, a circuit control board, 91, a power supply button, 92, a display screen, 101, a rear cover, 102, a front cover, a bottom cover, a top cover, 104, 211, a sliding chute, 311. sealing element, 521 through groove, 1011 buckle belt, 1012 positioning buckle, 1013 positioning hole, 1031 feeding hole, 1032 sealing ring.

Detailed Description

The utility model discloses a local structure of handheld integral type pen, it is following explain with the overall structure of handheld integral type pen, it only includes the utility model discloses a preferred embodiment, and does not consequently injecing the protection scope of the utility model.

Referring to fig. 1 and 2, a hand-held one-piece pen includes a housing 10 having a grip handle 100, the housing 10 is preferably a rigid injection molded part, and the housing 10 is formed by fastening left and right half shells for easy assembly.

Referring to fig. 3 and 4, an upper receiving chamber 11 and a lower receiving chamber 12 are formed in the housing 10, the upper receiving chamber 11 of the housing 10 is provided with a pen assembly 20, the lower receiving chamber 12 of the housing 10 is provided with an air pump assembly 30, and the air pump assembly 30 is used for introducing compressed air into the pen assembly 20.

Referring to fig. 5, the spray pen assembly 20 includes a pen body 21 having a cavity therein, a feeding assembly communicated with the cavity is disposed on an upper side of the pen body 21, specifically, the feeding assembly is a copper cap 22 having a feeding channel, the pen body 21 is a hollow cylinder made of metal, a round hole is disposed on the upper side of the pen body 21, the copper cap 22 is disposed in the round hole and welded and fixed to the round hole, the feeding channel of the copper cap 22 is communicated with the cavity of the pen body 21, and the copper cap 22 is used for connecting a cup filled with paint.

The front end of the pen body 21 is connected with a nozzle assembly 23, the nozzle assembly 23 is provided with a central nozzle hole communicated with the containing cavity, the rear end of the pen body 21 is connected with a spring sleeve 24, a clamping spring (not shown) is sleeved in the spring sleeve 24 and penetrates through a needle clamping shaft 25 of the clamping spring, the rear end of the spring sleeve 24 is connected with a locking nut 26, two ends of the clamping spring abut against the needle clamping shaft 25 and the locking nut 26 respectively, and the needle clamping shaft 25 is provided with a needle 27 which extends into the containing cavity and is matched with the central nozzle hole in a clamping manner.

During assembly, the nozzle assembly 23 is connected to the front end of the pen body 21, the spring sleeve 24 is screwed to the rear end of the pen body 21, the spray needle 27 is inserted into the spray needle clamp shaft 25, the spray needle clamp shaft 25 and the clamping spring are sleeved into the spring sleeve 24 in sequence, and finally the locking nut 26 and the spring sleeve 24 are screwed tightly. The assembled nozzle assembly 23 is then fixedly mounted in the upper receiving cavity 11 of the housing 10.

Referring to fig. 4, the air pump assembly 30 includes an air compressor pump body 31 and a motor 32 for driving the air compressor pump body 31 to operate, the air compressor pump body 31 is disposed at an upper end of the motor 32 and is in transmission connection with an output shaft of the motor 32, and the air pump assembly 30 is integrally fixed and clamped in the lower accommodating chamber 12 of the housing 10.

The operation process of the air-jet pen in the present embodiment is similar to that of the air-jet pen in the background art, and the operation principle of the air pump assembly 30 outputting compressed air is common technical knowledge in the art, and therefore, the detailed description thereof is omitted. It should be noted that although the construction and principle of the ink jet pen assembly of the present embodiment is similar to the ink jet pen of the background art, the ink jet pen assembly 20 and the air pump assembly 30 of the present invention are not limited thereto, and other conventional constructions of ink jet pen assembly and air pump assembly in the field can be equivalently replaced within the scope of the present invention.

Further, the air nozzle assembly 20 is provided with an air inlet pipe joint 28, one end of the air inlet pipe joint 28, which extends into the air nozzle assembly 20, corresponds to the central nozzle hole, the air pump assembly 30 is provided with an air outlet pipe joint 33, the air inlet pipe joint 28 and the air outlet pipe joint 33 are communicated through an air pipe (not shown), and the air pipe is arranged in the upper accommodating cavity 11 of the housing 10. Specifically, the air inlet connector 28 is disposed beside the pen body 21, so that the air tube can be attached to the inner wall of the housing 10 as much as possible without affecting the pressing operation of the operation button 50.

Referring to fig. 6, the handheld integrated type pen of the present embodiment further includes a switch component 40, and the switch component 40 is used for controlling the start and stop operation of the air pump assembly 30. Specifically, the switch component 40 includes a jog switch 41, and the jog switch 41 is a conventional switch component including a switch contact 42, and the switch control is realized by touching the switch contact 42. The inching switch 41 is fixedly mounted on the inner wall of the upper receiving cavity 11 of the housing 10 through a circuit board 43, and is electrically connected to the air pump assembly 30.

Referring to fig. 3 and 4, the handheld integrated type airbrush of the present embodiment further includes an operation button 50, the operation button 50 is disposed at the position of the grip handle 100 of the casing 10 through an elastic member 60 in a reciprocating manner, specifically, the elastic member 60 is a spring, a portion of the operation button 50 exposed outside the casing 10 is a pressing portion adapted to a finger portion of a human body, the operation button 50 is disposed inside the casing 10 and provided with a guide post, the spring is sleeved on the guide post, and two ends of the spring respectively abut against an inner wall of the casing 10 and an inner side of the operation button 50. The housing 10 is provided with a mounting hole 13 corresponding to the pressing portion, the operation button 50 reciprocates on the housing 10 under the limit fit of the pressing portion and the mounting hole 13, the operation button 50 receives the elastic force of the elastic member 60 in the pressing stroke, and the elastic force of the elastic member 60 causes the operation button 50 to keep the moving trend of extending to the outside of the housing 10 and is also used for resetting movement when the operation button 50 is released.

Referring to fig. 6 and 7, the operation button 50 includes a first control portion 51 and a second control portion 52. When the operating button 50 is pressed, the first control part 51 controls the switch component 40 to keep an on state in the pressing stroke of the operating button 50, and further controls the air pump component 30 to start operation, and the second control part 52 controls the opening degree of the nozzle of the spray pen component 20 to be opened along with the change of the pressing displacement of the operating button 50 in the pressing stroke of the operating button 50; when the operating button 50 is released, the operating button 50 is reset by the elastic force of the elastic member 60, the first control part 51 controls the switch member 40 to be turned off, and further controls the air pump assembly 30 to stop operating, and the second control part 52 controls the nozzle opening of the pen assembly 20 to be turned off.

The first control portion 51 is a stopper that engages with the contact 42 of the jog switch 41. When the jog switch 41 is mounted in the upper housing chamber 11 of the housing 10, the contact 42 thereof faces the moving direction of the operation button 50, and in the initial state, the stopper is in a position just contacting the contact 42, and when the operation button 50 is pressed, the stopper keeps a state of contacting the contact 42 of the jog switch 41 in accordance with the movement of the operation button 50, so that the jog switch 41 is kept in an on state throughout the pressing stroke of the operation button 50.

The second control portion 52 is a shifting block extending into the pen assembly 20, the shifting block is provided with a through groove 521 for the needle 27 of the pen assembly 20 to pass through, the through groove 521 has a position avoiding effect on the penetration of the needle 27, specifically, referring to fig. 5, the rear end of the pen body 21 is provided with a sliding groove 211 for the shifting block to extend into corresponding to the position of the needle clamp shaft 25, the shifting block abuts against the needle clamp shaft 25 when extending into the sliding groove 211, and along with the pressing reciprocating movement of the operation button 50, the shifting block also slides back and forth in the sliding groove 211 and drives the needle clamp shaft 25 to move back and forth in the pen body 21, so as to adjust the opening degree between the needle 27 and the nozzle assembly 23, and thus adjust the spraying amount of the paint.

Referring to fig. 4 and 7, as a preferred embodiment of the present invention, the operation button 50 further includes a third control portion 53, a self-locking elastic device 70 cooperating with the third control portion 53 is further disposed in the housing 10, the operation button 50 is pressed, and when the third control portion 53 drives the self-locking elastic device 70 to be located at its self-locking position, the operation button 50 is limited and fixed at the pressed position; when the operation button 50 is pressed again, the third control part 53 drives the self-locking rebounder 70 to be located at the rebounding position, the operation button 50 is released from the limit fixing, and is reset under the elastic force of the elastic member 60. The structure and principle of the self-locking rebounder 70 are common technical knowledge in the field, and the self-locking rebounder can be randomly selected and purchased in the market as a structural member for realizing the self-locking rebounding function, so that the detailed description is omitted.

Further, the third control portion 53 is a slot fixedly connected to the movable end 71 of the self-locking rebounder 70, and after the slot is fixedly connected to the movable end 71 of the self-locking rebounder 70, the movable end 71 of the self-locking rebounder 70 can move along with the movement of the operation button 50, and when the self-locking rebounder 70 is located at the self-locking position, the operation button 50 is also locked at the position in a limited manner. Normally, the self-locking position of the self-locking rebounder 70 is close to the maximum contraction position of the movable end 71 thereof, that is, when the operation button 50 is locked in a limited manner, the pressing stroke of the operation button 50 is close to the maximum pressing stroke thereof, and at this time, the shifting block shifts the needle holder shaft 25 to the position where the opening degree between the needle 27 and the nozzle assembly 23 is maximum, that is, the operating button 50 does not need to be pressed at this time, and the operating state of the pen at the maximum ejection amount can be maintained for continuous operation.

Referring to fig. 1 and 2, in a preferred embodiment, the rear end of the housing 10 is provided with a detachably attached rear cap 101, and the rear cap 101 corresponds to the rear portion of the pen assembly 20. When the rear cover 101 is removed, an opening 14 is formed at the rear end of the housing 10, the locking nut 26 at the rear end of the pen body 21 can be unscrewed from the opening 14, and then the clamping spring, the needle clamp shaft 25 and the needle 27 are sequentially taken out, which facilitates cleaning or replacement of the assembly.

Back lid 101 is made for the flexible glue material, and the both sides of back lid 101 are equipped with detains the area 1011, detain to be equipped with a plurality of location on the area 1011 and detain 1012, casing 10 both sides be equipped with location knot 1012 assorted locating hole 1013, detain the lock of area 1011 through location knot 1012 and locating hole 1013, detachably ground fixed connection in casing 10 rear end. When the cover 101 is made of hard material, the detachable connection with the housing 10 may be plug-in connection, snap-in connection, screw connection, or the like. The buckle belt 1011 made of the soft rubber material in the embodiment has the functions of collision prevention and convenient disassembly and assembly, and also has the beautiful decoration effect.

Similarly, the front end of the housing 10 may also be provided with a detachably connected front cover 102, and the front cover 102 is sleeved on the nozzle portion of the pen assembly 20. When the front cover 102 is removed, the front end of the housing 101 forms an opening through which the nozzle assembly 23 can be removed for cleaning or replacement.

Further, the upper end of the housing 10 is further provided with a detachably connected top cover 103, and the top cover 103 is provided with a feeding hole 1031 adapted to the feeding hole of the spray pen assembly 20. Specifically, the feed hole 1031 on the top cover 103 matches with the outer diameter of the copper cap 22, and in order to prevent the paint from flowing into the housing 10 along the gap between the feed hole 1031 and the copper cap 22, an annular groove for mounting a sealing ring 1032 is further opened on the outer periphery of the copper cap 22, and the gap between the feed hole 1031 and the copper cap 22 is sealed by the sealing ring 1032.

Further, the lower end of the casing 10 is further provided with a detachably connected bottom cover 104, and the bottom cover 104 is made of a soft rubber material and used for sealing the lower end of the casing 10, so that the casing 10 can be prevented from being damaged by collision.

Referring to fig. 3 and 4, as a preferred embodiment, an annular groove 15 is formed in the housing 10, the annular groove 15 is located between the upper receiving cavity 11 and the lower receiving cavity 12, a sealing member 311 is sleeved on the upper portion of the air pump assembly 30, and the sealing member 311 is tightly clamped in the annular groove 15. The sealing element 311 on the upper portion of the air pump assembly 30 seals and separates the upper receiving chamber 11 and the lower receiving chamber 12 in the housing 10, the upper receiving chamber 11 is used for installing the control components such as the pen assembly 20 and the switch button 50, specifically, the first control portion 51, the second control portion 52 and the third control portion 53 of the switch button 50 are integrally formed and located in the upper receiving chamber 11, the inching switch 41, the self-locking rebounder 70 and the elastic element 60 are all located in the upper receiving chamber 11, and these components have lower waterproof requirements; the lower housing chamber 12 is used for mounting the air pump assembly 30, and includes electrically powered components such as the motor 32, the circuit control board 90, and the power module 80, which have relatively high waterproof requirements.

Further, a power supply assembly 80 and a circuit control board 90 are further disposed in the lower accommodating chamber 12, a power button 91 exposed on the surface of the housing 10 is disposed on the circuit control board 90, the power supply assembly 80 supplies power to the air pump assembly 30 through the circuit control board 90, and the power button 91 is used for controlling the circuit of the circuit control board 90. The circuit board 43 of the jog switch 41 located in the upper receiving cavity 11 is electrically connected to the circuit control board 90.

The circuit control board 90 is further provided with a display screen 92 exposed on the surface of the housing 10, and the display screen 92 is used for displaying the working state of the air pump assembly 30 and/or the power supply assembly 80. The circuit control board 90 is further provided with a charging interface for charging the power supply assembly 80 and/or a power supply interface for supplying power to the air pump assembly 30, the charging interface and/or the power supply interface extends out of the bottom end of the shell 10, and the bottom cover 104 is provided with a poking-off soft rubber pad corresponding to the position of the charging interface and/or the power supply interface.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims (9)

1. The utility model provides a handheld integral type spray pen can dismantle back lid structure which characterized in that: the air pump type ink-jet pen comprises a shell (10) with a holding handle (100), wherein an upper accommodating cavity (11) and a lower accommodating cavity (12) are formed in the shell (10), an ink-jet pen assembly (20) is arranged in the upper accommodating cavity (11) of the shell (10), an air pump assembly (30) is arranged in the lower accommodating cavity (12) of the shell (10), and the air pump assembly (30) is used for introducing compressed air into the ink-jet pen assembly (20);

the operating button (50) controls the operation of the spray pen assembly (20) in the pressing stroke of the operating button (50);

the rear end of the shell (10) is provided with a detachably connected rear cover (101), and the rear cover (101) corresponds to the tail of the spray pen assembly (20); when the rear cover (101) is removed, an opening (14) is formed at the rear end of the housing (10).

2. The detachable rear cover structure of the hand-held integrated type spray pen as claimed in claim 1, wherein: back lid (101) are made for the flexible glue material, and the both sides of back lid (101) are equipped with detains area (1011), detain to be equipped with a plurality of location on area (1011) and detain (1012), casing (10) both sides be equipped with location knot (1012) assorted locating hole (1013), detain the lock that area (1011) detained (1012) and locating hole (1013) through the location, detachably ground fixed connection in casing (10) rear end.

3. The detachable rear cover structure of the hand-held integrated type spray pen as claimed in claim 1, wherein: the rear cover (101) is made of hard materials, and the rear cover (101) is connected with the rear end of the shell (10) in an inserting mode, a clamping mode or a threaded mode.

4. The detachable rear cover structure of the hand-held integrated type spray pen as claimed in claim 1, wherein: the spray pen assembly (20) comprises a pen body (21) with a containing cavity arranged inside, the rear end of the pen body (21) is connected with a spring sleeve (24), a clamping spring and a spray needle clamping shaft (25) penetrating through the clamping spring are sleeved in the spring sleeve (24), the rear end of the spring sleeve (24) is connected with a locking nut (26), two ends of the clamping spring are respectively abutted against the spray needle clamping shaft (25) and the locking nut (26), and a spray needle (27) extending into the containing cavity is clamped on the spray needle clamping shaft (25); the spring sleeve (24), the needle clamp shaft (25) and the lock nut (26) can be taken out of the shell (10) from the opening (14).

5. The detachable rear cover structure of the hand-held integrated type spray pen as claimed in claim 4, wherein: the pen is characterized in that the front end of the pen body (21) is connected with a nozzle assembly (23), the front end of the shell (10) is further provided with a detachably connected front cover (102), and the front cover (102) is sleeved on the nozzle assembly (23) of the shell (10).

6. The detachable rear cover structure of the hand-held integrated type spray pen as claimed in claim 4, wherein: the welding of handwriting (21) upside has copper cap (22), the upper end of casing (10) still is equipped with top cap (103) of dismantling the connection, top cap (103) are equipped with feed port (1031) that suits with copper cap (22) of spray pen subassembly (20).

7. The detachable rear cover structure of the hand-held integrated type spray pen as claimed in claim 6, wherein: and an annular groove for mounting a sealing ring (1032) is further formed in the periphery of the copper cap (22).

8. The detachable rear cover structure of the hand-held integrated type spray pen as claimed in claim 4, wherein: an air inlet pipe joint (28) is arranged beside the pen body (21).

9. The detachable rear cover structure of the hand-held integrated type spray pen as claimed in claim 1, wherein: the lower end of the holding handle (100) of the shell (10) is provided with a detachably connected bottom cover (104).

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