Handheld paint sprayer

Abstract

The utility model discloses a handheld paint spraying machine which comprises a machine body. The material storage kettle is detachably connected to the machine body; the switch pull rod is connected to the machine body, can rotate around a connecting shaft of the machine body and pushes or releases the power switch ejector rod in the rotating process; the end, close to the switch pull rod, of the power switch ejector rod is arranged outside the machine body, and the end, away from the switch pull rod, is arranged in the machine body. The power switch ejector rod is used for controlling the output force of the motor; the motor sleeve is arranged at the upper part of the tail part of the machine body and is used for sleeving the motor; the motor sleeve is provided with a through hole, the through hole is provided with a threading sealing plug, and the threading sealing plug is provided with a threading hole. The spraying machine is ingenious in conception, long in service life of the motor, simple in structure, compact in layout and good in spraying effect, and the machine body is not easy to be hot.

Description

Technical Field

[0001] The utility model relates to a paint spraying and touch-up device, in particular to a handheld paint sprayer. Background Art

[0002] In recent years, with the continuous improvement of people's living standards, spray painting equipment has become increasingly commonplace, making it convenient and efficient for everyday repairs and renovations on doors, windows, patios, and furniture. Common spraying methods include manual application with a brush or roller, cart-mounted spray equipment, and large-scale spray equipment. Manual application is inefficient and can result in uneven application. Cart-mounted spray equipment is generally more expensive and is typically used for home improvement rather than daily repairs and renovations. Large-scale spray equipment is generally used for large-scale construction projects.

[0003] The existing small-scale spray paint touch-up machines waste energy due to sealing and spray flow during the spray force transmission process, which affects the spray force. As a result, the motor needs more output to achieve the same spraying amount, causing problems such as overheating of the machine body, poor spraying effect and short motor service life. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a handheld paint sprayer, which is provided with a sealing device, so that the motor has a long service life, the machine body is not easy to heat up, and the spraying effect is good.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A handheld paint sprayer, comprising

[0007] body;

[0008] The storage pot is detachably connected to the machine body;

[0009] The switch lever is connected to the fuselage and can rotate around the connecting axis with the fuselage, and pushes or releases the power switch push rod during the rotation; the power switch push rod is arranged outside the fuselage at one end close to the switch lever and inside the fuselage at the other end away from the switch lever;

[0010] The power switch push rod is used to control the output force of the motor; and

[0011] The motor sleeve is arranged at the upper part of the tail of the fuselage and is used for sleeve-mounting the motor; the motor sleeve is provided with a through hole, a threading sealing plug is provided on the through hole, and a threading hole is provided on the threading sealing plug.

[0012] Furthermore, the threading sealing plug is in the shape of an "I" as a whole, including an upper boss, a lower boss and a connecting column connecting the upper boss and the lower boss.

[0013] Furthermore, the threading hole is an opening on one side of the threading sealing plug that passes through the threading sealing plug in height.

[0014] Furthermore, the opening is in the shape of an "8".

[0015] Furthermore, the connecting column is an elastic member, and at least one of the boss and the lower boss is an elastic member.

[0016] Furthermore, it also includes a straw, one end of which is arranged in the storage pot, and the other end is arranged in the machine body, and one end of the straw is bent.

[0017] Furthermore, it also includes a connecting frame located on the top of the storage pot. When the storage pot and the fuselage are installed in coordination, the connecting frame is pressed between the storage pot and the fuselage.

[0018] Furthermore, a support frame for the straw is provided on the connecting frame, and a plurality of gaps are provided on the support frame.

[0019] Furthermore, it also includes a guide needle, which is located inside the fuselage and has one end located at the nozzle of the fuselage.

[0020] Furthermore, the guide needle is in an elongated shape as a whole, and includes a needle body and guide wings, a sealing body and a connecting piece arranged on the needle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structural layout of the utility model.

[0022] Figure 2 This is a schematic diagram of the structure of the motor sleeve in Example 1 of the present utility model.

[0023] Figure 3 This is a front view of the sealing ring of Example 2 of the present utility model.

[0024] Figure 4 This is a top view of the sealing ring of Example 2 of the present utility model.

[0025] Figure 5 It is a right side view of the sealing ring of the second embodiment of the present utility model.

[0026] Figure 6 This is a schematic structural diagram of a straw and related accessories according to a third embodiment of the present invention.

[0027] Figure 7 This is a top view of the straw and related accessory structures of Example 3 of the present utility model.

[0028] Figure 8 This is a schematic diagram of the structure of the guide needle in the fourth embodiment of the present utility model. DETAILED DESCRIPTION

[0029] The following further describes the embodiments of the present invention with reference to the accompanying drawings.

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with functional diagrams and flow charts. The following exemplary embodiments and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0031] See Figure 1 and Figure 2 As shown, a handheld paint sprayer includes a body 1, a material storage pot 2, a constant speed dial 3, a power switch top rod 5, a switch pull rod 6 and a motor. The material storage pot 2 is detachably connected to the body 1. The switch pull rod 6 is connected to the body 1 and can rotate around the connection axis with the body 1, and push or release the power switch top rod 5 during the rotation. The power switch top rod 5 is arranged outside the body 1 at one end close to the switch pull rod 6, and is arranged inside the body 1 at the other end away from the switch pull rod 6. The constant speed dial 3 is arranged on the body 1, below the switch pull rod 6, and cooperates with the switch pull rod 6 to control the output force of the motor.

[0032] The motor is further provided with a motor sleeve 13 outside the motor, which is arranged at the upper tail of the fuselage 1. The motor sleeve 13 is provided with a through hole 131, and a threading sealing plug 14 is provided on the through hole 131. The motor is first installed into the motor sleeve 13 inside the fuselage 1, and the threading sealing plug 14 is installed into the through hole 131. The threading sealing plug is provided with a threading hole, and the motor wire passes through the threading hole. The motor sleeve 13 is sealed without affecting the threading, ensuring that the suction device inside the motor sucks the external wind into the fuselage 1 through the suction port 15 when the motor rotates, and almost all of it is blown to the storage pot 2 part, and is not dissipated due to unsealing.

[0033] Preferably, it is the second embodiment of the present invention, see Figure 3-Figure 5 As shown, the wire sealing plug 14 is in the shape of an "I" as a whole, including an upper boss 141, a lower boss 143 and a connecting column 142 connecting the upper boss 141 and the lower boss 143, wherein the top of the upper boss 141 is chamfered, and the inner diameter of the chamfer is smaller than the diameter of the through hole 131, so that the wire sealing plug 14 can easily enter the through hole 131, and the outer diameter of the chamfer is larger than the diameter of the through hole 131, so that the wire sealing plug 14 is not easy to fall off from the through hole 131; the diameter of the connecting column 142 is slightly larger than the diameter of the through hole 131, and can achieve an interference fit with the through hole 131 to ensure the sealing effect, and the diameter of the lower boss 143 is larger than the diameter of the through hole 131, so that the wire sealing plug 14 is not easy to fall off from the through hole 131.

[0034] Preferably, the threading hole is an opening 144 on one side of the threading sealing plug 14 that passes through the threading sealing plug 14 in height. During the process of the threading sealing plug 14 being inserted into the through hole 131, due to the existence of the opening 114, the volume of the threading sealing plug 14 becomes smaller when subjected to force, so that the threading sealing plug 14 can be smoothly passed into the through hole 131, and when the force is eliminated, the volume is restored, thereby achieving a good seal for the through hole 131.

[0035] Preferably, the opening 144 is in the shape of an "8", which can match the shape of the motor power cord and better ensure the passage of the power cord.

[0036] Preferably, the connecting column is an elastic member, and at least one of the boss 141 and the lower boss 143 is an elastic member, which can ensure that the threading sealing plug 14 penetrates the through hole 131 more smoothly and achieves a good seal on the through hole 131 after penetration.

[0037] Preferably, it is the third embodiment of the present invention, see Figure 1 and Figure 6-Figure 7 As shown, the utility model is a handheld paint sprayer, which also includes a suction pipe 10. One end of the suction pipe 10 is arranged in the material storage pot 2, and the other end is arranged in the fuselage 1, and one end of the suction pipe is bent. This bending setting can effectively prevent the backflow of the spray material. During the spraying process, the wind force sucked in by the suction device in the motor puts pressure on the spray material in the discharge pot 2, so that the spray material in the storage pot 2 slowly moves upward from the suction pipe 10 to the nozzle 8 of the fuselage 1, and is sprayed out from the nozzle. In this process, it is necessary to overcome the gravity of the spray material in the suction pipe 10, that is, the backflow force of the spray material in the suction pipe 10. The setting of the bend can effectively prevent backflow, that is, the backflow of the spray material caused by the straight up and down pressure, and the bend plays a buffering role, which reduces the burden on the spraying force of the handheld paint sprayer and the motor.

[0038] Preferably, the handheld paint sprayer of the present invention further includes a connecting frame 11 located on the top of the material storage pot 2. When the material storage pot 2 is installed in conjunction with the body 1, the connecting frame 11 is pressed between the material storage pot 2 and the body 1, making it convenient to take the suction pipe 10 into and out of the material storage pot 2. When the spray material is stored in the material storage pot 2, one end of the suction pipe 10 is inserted into the material storage pot 2, and then the connecting frame 11 is placed on the material storage pot 2. Then, the material storage pot 2 is connected to the body 1, and the handheld paint sprayer can use the spray material in the material storage pot 2. When the material storage pot 2 needs to be replaced or increased, the material storage pot 2 can be disassembled from the body 1, and the connecting frame 11 can be removed from the top of the material storage pot 2. At the same time, the suction pipe 10 can be taken out of the material storage pot 2, and the material storage pot 2 can be replaced or increased.

[0039] Preferably, a support frame 111 for the straw 10 is provided on the connecting frame 11 , and a plurality of gaps 12 are provided on the support frame 111 to position the straw 10 without hindering the motor from sucking wind into the storage pot 2 .

[0040] Preferably, it is the fourth embodiment of the present utility model, see Figure 1 and Figure 8 As shown, the handheld paint sprayer of the present invention further includes a guide needle 7. The guide needle 7 is located in the body 1, with one end located at the nozzle 8 of the body 1 to guide the spray liquid to spray out smoothly.

[0041] Preferably, the guide needle 7 is elongated and comprises a needle body 70, a guide wing 71 disposed on the needle body 70, a sealing member 72, and a connector 73. The guide needle 7 is mounted within the housing 1 via the connector 73. When the spray liquid is drawn into the housing 1 via the suction tube 10 into the portion of the guide needle 7, the sealing member 72 seals the spray liquid within the housing 1 before the sealing member 72, allowing the spray liquid to be ejected forcefully from the nozzle 8. The backflow wing 71 creates a fan-shaped spray pattern for a more uniform spray.

[0042] In summary, the utility model has an ingenious design, which ensures that the motor has a long service life and the body is not easy to get hot. It also has a simple structure, a compact layout and a good spraying effect.

Claims

1. A handheld paint sprayer, characterized by: include fuselage (1); A material storage pot (2) is detachably connected to the machine body (1); A switch pull rod (6) is connected to the body (1) and can be pulled around a connection axis with the body (1), and pushes or releases the power switch top rod (5) during the pulling process; the power switch top rod (5) has an end close to the switch pull rod (6) arranged outside the body (1), and an end away from the switch pull rod (6) arranged inside the body (1); The power switch push rod (5) is used to control the output force of the motor; as well as A motor sleeve (13) is provided at the upper portion of the tail of the fuselage (1) and is used for sleeve-mounting the motor; the motor sleeve (13) is provided with a through hole (131), a threading sealing plug (14) is provided on the through hole (131), and a threading hole is provided on the threading sealing plug (14).

2. The handheld paint sprayer according to claim 1, characterized in that: The threading sealing plug (14) is in the shape of an "I" as a whole, and comprises an upper boss (141), a lower boss (143), and a connecting column (142) connecting the upper boss (141) and the lower boss (143).

3. A handheld paint sprayer according to claim 1 or 2, characterized in that: The threading hole is an opening (144) on one side of the threading sealing plug (14) that passes through the threading sealing plug (14) in height.

4. The handheld paint sprayer according to claim 3, characterized in that: The opening (144) is in the shape of an "8".

5. The handheld paint sprayer according to claim 2, characterized in that: The connecting column (142) is an elastic member, and at least one of the boss (141) and the lower boss (143) is an elastic member.

6. The handheld paint sprayer according to claim 1, characterized in that: It also includes a straw (10), one end of which is arranged in the material storage pot (2), and the other end of which is arranged in the machine body (1), and one end of the straw (10) is bent.

7. The handheld paint sprayer according to claim 6, characterized in that: It also includes a connecting frame (11) located on the top of the material storage pot (2). When the material storage pot (2) and the machine body (1) are installed in conjunction with each other, the connecting frame (11) is pressed between the material storage pot (2) and the machine body (1).

8. The handheld paint sprayer according to claim 7, characterized in that: A support frame (111) for the straw (10) is provided on the connecting frame (11), and a plurality of gaps (12) are provided on the support frame (111).

9. The handheld paint sprayer according to claim 8, characterized in that: It also includes a guide needle (7), which is located inside the body (1) and has one end located at the nozzle (8) of the body (1).

10. The handheld paint sprayer according to claim 9, characterized in that: The guide needle (7) is in an elongated shape as a whole, and comprises a needle body (70), a guide wing (71), a sealing body (72), and a connecting piece (73) arranged on the needle body (70).

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