Portable self-paint-spraying extension bar

Abstract

The utility model relates to the technical field of automatic paint spraying, in particular to a portable automatic paint spraying lengthening rod which comprises a connecting pipe, a spray head, a connector, a paint spraying pipe and a connecting device, the spray head is fixedly connected to one end of the connecting pipe, the connector is fixedly connected to the end, away from the spray head, of the connecting pipe, and the paint spraying pipe is arranged in the connector. The connecting device is arranged in the connector and comprises a connecting hole and a limiting rod. The paint spraying pipe and the lengthening rod can be rapidly and stably connected or disconnected through accurate matching of the limiting rod and the connecting groove in the paint spraying pipe, sliding of the limiting block in the connecting hole and elastic force generated by the spring, and compared with a traditional bolt connecting mode, the problems of thread slipping and corrosion caused by long-term use of a bolt are solved through the structure, and the service life of the paint spraying pipe is prolonged. Therefore, the paint leakage risk of the connecting part is obviously reduced, and the service life and reliability of equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of spray painting devices, and in particular to a convenient self-spraying paint extension pole. Background Technology

[0002] Spray paint, also known as aerosol paint, typically consists of an aerosol can, an aerosol valve, the contents (paint), and a propellant. It is a type of paint that is processed using a special method and then high-pressure filled for easy spraying; it is also called manual spray paint. Existing manual spray paint requires the use of ladders to climb to the top and spray the ceiling when spraying at heights, which is too cumbersome to carry. Therefore, a convenient spray paint extension pole is used to extend the nozzle of the handheld spray paint, making it easier for workers to spray the ceiling.

[0003] Existing technologies, such as the utility model with publication number CN217989705U, disclose a portable spray paint holder. This patent uses a frame, with a rectangular block fixedly connected to the upper surface of the frame. A mounting block is fixedly connected to the center of the lower surface of the rectangular block. A pressing block is rotatably connected to the inner surface of the mounting block. A reinforcing block is fixedly connected to the right surface of the frame near the center. A connecting block is fixedly connected to the right surface of the reinforcing block. A clamping rod is symmetrically rotatably connected to the inner surface of the connecting block. A first telescopic rod is symmetrically fixedly connected to the outer surface of the reinforcing block. A first spring is sleeved on the outer surface of both first telescopic rods. This utility model solves the problems of existing handheld spray brushes, which require workers to use ladders to lift the brush to higher positions. However, ladders are cumbersome to transport, and ladders cannot be used in some positions. Furthermore, the installation of the spray paint body involves many steps, reducing work efficiency.

[0004] In daily operation, during the process of spray painting ceilings, the connection between the telescopic rod and the paint hose is prone to aging over a long period of time, resulting in unstable connection between the telescopic rod and the paint hose, making it difficult for the equipment to operate normally. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a convenient self-spraying paint extension pole, and the technical solution adopted is as follows:

[0006] A convenient self-spraying paint extension rod includes a connecting pipe, a nozzle, a connector, a paint spray tube, and a connecting device. One end of the connecting pipe is fixedly connected to the nozzle, and the end of the connecting pipe away from the nozzle is fixedly connected to the connector. The paint spray tube is housed inside the connector. The connecting device is located inside the connector and includes a connecting hole and a limiting rod. The connecting hole is located inside the connector, and the limiting rod is slidably connected to the inside of the connecting hole along its axis. A connecting groove is formed on the surface of the paint spray tube near the connector, engaging with the limiting rod. A limiting block is fixedly connected to the side of the limiting rod near the connecting groove. The limiting block and the inner wall of the connecting hole slide together along the axis of the connecting hole, causing the limiting rod to slide. A first spring is also sleeved on the outside of the limiting rod inside the connecting hole. One end of the first spring is fixedly connected to the end away from the limiting block, and the other end is fixedly connected to the inner wall of the connecting hole.

[0007] Furthermore, an abutment ring is slidably connected to the outer surface of the connector along the axis, and a positioning block is fixedly connected to the outer surface of the connector. A position adjustment component is provided between the abutment ring and the positioning block to adjust the position of the abutment ring in the axial direction of the connector.

[0008] Furthermore, the position adjustment assembly includes a second spring, the second spring being distributed along its length direction parallel to the axis of the connector, and both ends of the second spring being fixedly connected to the abutment ring and the positioning block, respectively.

[0009] Furthermore, a guide rod is connected between the abutment ring and the positioning block. The second spring is coaxially sleeved on the outside of the guide rod, and one end of the guide rod is slidably connected to the positioning block along the axial direction of the connector, while the other end is fixedly connected to the abutment ring.

[0010] Furthermore, a protective device is provided on the outer surface of the nozzle. The protective device includes a first protective cover and a second protective cover. The first protective cover is located on the lower surface of the nozzle, and the second protective cover is located on the upper surface of the nozzle. The second protective cover is rotatably connected to the end of the first protective cover away from the connecting pipe. A movable hole is opened at the end of the first protective cover near the connecting pipe, and a limiting hole is opened at the end of the second protective cover near the connecting pipe. A locking rod is slidably connected to the inner wall of the movable hole and engages with the inner wall of the limiting hole. A pull ring is fixedly connected to the end of the locking rod extending out of the movable hole.

[0011] Furthermore, the pull ring is slidably connected to the first protective cover along the axial direction of the connecting pipe, and a movable rod is fixedly connected to the lower end of the first protective cover near the connecting pipe. The pull ring is slidably connected to the movable rod along the axial direction of the connecting pipe.

[0012] Furthermore, a third spring is sleeved and connected to the surface of the moving rod. The length direction of the third spring is distributed parallel to the axial direction of the connecting tube, and its two ends are fixedly connected to the pull ring and the end of the first protective cover near the connecting tube, respectively.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The connecting device allows for quick connection of the connecting pipe to the spray pipe, thereby extending the sprayer that requires a longer spraying distance. When not in use, the connecting pipe can be quickly removed, effectively avoiding the problems of corrosion, stripping, and paint leakage caused by traditional bolt connections after long-term use, and significantly improving the stability and durability of the equipment connection.

[0015] 2. The connecting device structure, consisting of a limiting rod, connecting groove, limiting block, and first spring, ensures that the paint spraying tube and the extension rod can be quickly and stably connected or disconnected by precisely matching the limiting rod with the connecting groove on the paint spraying tube, and by using the sliding of the limiting block in the connecting hole and the elastic force generated by the spring. Compared with the traditional bolt connection method, this structure avoids the problems of stripping and corrosion of bolts after long-term use, thereby significantly reducing the risk of paint leakage at the connection point and improving the service life and reliability of the equipment.

[0016] 3. By setting an axially sliding abutment ring on the outer surface of the connector, and combining it with a guide rod and a second spring, the position of the abutment ring can be precisely adjusted. When the abutment ring moves toward the paint spray tube, it can release the constraint on the limit rod, thus facilitating the quick insertion or removal of the paint spray tube. When the abutment ring returns to its original position, it can quickly and reliably fix the limit rod. This structure ensures convenient operation and strong connection, effectively reduces the risk of loose connection, and improves work efficiency and safety.

[0017] 4. By adding a protective device to the nozzle, it is effectively prevented that foreign objects may enter the nozzle and cause blockage during storage and transportation, ensuring normal use of the nozzle and improving equipment reliability.

[0018] 5. The protective device consists of a first protective cover, a second protective cover, a locking rod, a pull ring, and a third spring. Through the cooperation of the locking rod and the limiting hole, and the restoring force provided by the third spring, the protective cover can be opened or closed easily, facilitating the quick use and storage of the nozzle. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention in its installed state;

[0021] Figure 3This is a partial cross-sectional view of the present invention.

[0022] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0023] Figure 5 for Figure 3 Enlarged view of a portion of point B in the middle;

[0024] Figure 6 Diagram showing the connection of the protective device.

[0025] Figure 7 Schematic diagram of the connection head and protective device.

[0026] Legend: 1. Connecting pipe; 2. Spray nozzle; 3. Connector; 4. Spray pipe; 5. Connecting device; 51. Connecting groove; 52. Limiting rod; 53. Limiting block; 54. Connecting hole; 55. First spring; 56. Abutment ring; 57. Positioning block; 58. Guide rod; 59. Second spring; 6. Protective device; 61. First protective cover; 62. Second protective cover; 63. Moving hole; 64. Limiting hole; 65. Locking rod; 66. Pull ring; 67. Moving rod; 68. Third spring; 69. Rotary hinge. Detailed Implementation

[0027] Please see Figures 1-7 This utility model provides a convenient self-spraying paint extension pole, including a connecting pipe 1, a nozzle 2, a connector 3, a paint spray tube 4, and a connecting device 5. One end of the connecting pipe 1 is fixedly connected to the nozzle 2 along its length, and the other end of the connecting pipe 1 away from the nozzle 2 is fixedly connected to the connector 3. The paint spray tube 4 is provided inside the connector 3. The paint spray tube 4 is connected to the connecting pipe 1 through the connecting device 5. A protective device 6 is provided on the surface of the nozzle 2.

[0028] Specifically, such as Figures 1-4As shown, the connector 3 has a cavity inside for mating with the paint spray tube 4. The connecting device 5 is located inside the connector 3 and includes a connecting hole 54 and a limiting rod 52. The connecting hole 54 is distributed along the side wall of the connector 3 perpendicular to the axis of the connector 3 and has a through-hole structure that is larger in the middle and smaller at both ends. The limiting rod 52 is coaxially slidably connected inside the connecting hole 54. The upper and lower ends of the limiting rod 52 are respectively slidably connected to the upper and lower ends of the connecting hole 54. Specifically, the upper end of the limiting rod 52 is slidably connected to the upper end of the connecting hole 54 and can extend a certain length outside the connector 3. The lower end of the limiting rod 52 has a hemispherical structure and extends into the cavity inside the connector 3. The surface of the paint spray tube 4 is provided with... A connecting groove 51 is provided that can engage with the lower end of the limiting rod 52. The connecting groove 51 has an arc-shaped cross-section and its length is continuously distributed along the circumference of the paint spray tube 4. The lower end of the limiting rod 52 can rotate along the length of the connecting groove 51. The middle part of the limiting rod 52 is located inside the large-diameter section of the connecting hole 54, and a first spring 55 is sleeved on its outer side. The upper end of the first spring 55 is connected to the upper side wall of the large-diameter section of the connecting hole 54, and the lower end is fixedly connected to a limiting block 53. The limiting block 53 has a circular plate structure and can slide up and down along the large-diameter section of the connecting hole 54. The first spring 55 can press the limiting block 53 against the bottom of the middle section of the connecting hole 54 and apply a certain elastic force, thereby pressing the lower end of the limiting rod 52 against the connecting groove 51.

[0029] An abutment ring 56 is also provided on the outer surface of the connector 3. The abutment ring 56 has a ring-shaped structure and can slide along the axial direction of the connector 3. A positioning block 57 is also fixedly connected to one end of the outer surface of the connector 3 near the connecting tube 1. A position adjustment component is connected between the abutment ring 56 and the positioning block 57. The position of the abutment ring 56 in the axial direction of the connector 3 is adjusted by the position adjustment component. By providing the abutment ring 56 on the outer surface of the connector 3, the limiting rod 52 inside the connecting hole 54 can be blocked, preventing the paint spray tube 4 from easily detaching from the inside of the connector 3.

[0030] The position adjustment component is as follows Figure 4 As shown, the connector includes a guide rod 58 and a second spring 59. The guide rod 58 is distributed along a length parallel to the axial direction of the connector 3. One end of the guide rod 58 is fixedly connected to the abutment ring, and the other end is slidably connected to the positioning block 58 along the axial direction of the connector 3. The second spring 59 is sleeved on the outside of the guide rod 58, and its two ends along its length are connected to the abutment ring 56 and the positioning block 57, respectively. The guide rod 58 can drive the abutment ring 56 to slide along the surface of the connector 3, and as shown... Figure 4As shown, a baffle 510 is fixedly connected to one end of the guide rod 58 near the connecting pipe 1. When the abutment ring 56 is located outside the limiting rod 52, it cannot continue to slide towards the paint spray pipe 4. The baffle 510 is pressed against the side of the positioning block 507, and the second spring 59 is in a naturally extended state. When it is necessary to release the limiting rod 52 by the abutment ring 56, the guide rod 58 and the abutment ring 56 are pulled towards the connecting pipe 1 by the baffle 510 until the abutment ring 56 and the limiting rod 52 are no longer in contact. At this time, the second spring 59 is in a compressed state. After releasing the hand, the abutment ring 56 can be reset under the action of the second spring 59.

[0031] like Figures 1-4 as well as Figure 6 , Figure 7 As shown, a protective device 6 is provided on the outer surface of the nozzle 2. The protective device 6 includes a first protective cover 61 and a second protective cover 62. The first protective cover 61 is located on the lower surface of the nozzle 2, and the second protective cover 62 is located on the upper surface of the nozzle 2. The second protective cover 62 is rotatably connected to the end of the first protective cover 61 away from the connecting pipe 1. Figure 6 As shown, the end of the first protective cover 61 away from the connecting pipe 1 is connected to the second protective cover 62 by a rotating hinge 69, thereby enabling the opening and closing of the two. The end of the first protective cover 61 near the connecting pipe 1 has a moving hole 63, and the end of the second protective cover 62 near the connecting pipe 1 has a limiting hole 64. The moving hole 63 and the limiting hole 64 are correspondingly distributed and their lengths are both distributed along the axis parallel to the connecting pipe 1. The inner wall of the moving hole 63 is also connected to a locking rod 65, which engages with the inner wall of the limiting hole 64. The lower end of the locking rod 65 extends to the outside of the first protective cover 61 and is fixedly connected to a pull ring 66. The pull ring 66 can drive the locking rod 65 to move along the moving hole 63. When it moves into the limiting hole 64, the locking rod 65 engages with the limiting hole 64, thereby connecting the first protective cover 61 and the second protective cover 62.

[0032] Furthermore, a movable rod 67 is fixedly connected to the lower end of the first protective cover 61 near the connecting pipe 1. The length of the movable rod 67 is distributed along a direction parallel to the axis of the connecting pipe 1. The movable rod 67 passes through the pull ring 66 and is slidably connected to the pull ring 66. By setting the movable rod 67, the movement direction of the pull ring 66 can be guided and limited. A third spring 68 is also sleeved and connected to the surface of the movable rod 67. The two ends of the third spring 68 are respectively connected to the side of the pull ring 66 near the connecting pipe 1 and the surface of the first protective cover 61 near the connecting pipe 1. By setting the third spring 68, it is convenient to apply a restoring elastic force to the pull ring 66.

[0033] It should also be noted that in this embodiment, the outer diameter of the nozzle 2 is larger than the outer diameter of the connecting rod 1, and the protective device 6 has an internal cavity for accommodating the nozzle 2 and the connecting rod 1, with a shape matching both. Figure 7 As shown.

[0034] The working principle of this device for spray painting is as follows:

[0035] Before painting, the operator installs this device on the spray gun that requires an extended paint hose, thus lengthening the spraying distance. Specifically, for example... Figure 4 As shown, first pull the guide rod 58 to the left, causing the abutment ring 56 to move to the left side of the connecting hole 54, at which point the connecting hole 56 is fully exposed. Then, insert the paint spray tube 4 of the sprayer into the connector 3 until the connecting groove 51 on the paint spray tube 4 engages with the lower end of the limiting rod 51. Next, release the guide rod 58, and under the reset action of the second spring 59, move the abutment ring 56 to the right until it reaches the outside of the connecting hole 54, thereby fixing the limiting rod 52. When the painting is finished and needs to be removed, first pull the abutment ring 56 towards the connecting tube 1. The abutment ring 56 moves to the left on the surface of the connector 3. When the abutment ring 56 moves, it simultaneously moves the guide rod 58, causing the second spring 59 to deform and generate elastic force. After the abutment ring 56 moves to the left and disengages from the surface of the connecting hole 54, the limiting rod 52 immediately loses its restraint and pulls the paint spray tube 4 to move away from the interior of the connector 3. At this time, the paint spray tube 4 moves to the right, and the hemisphere at the lower end of the limiting rod 52 moves relative to the connecting groove 51 in the axial direction. The limiting rod 52 moves outward inside the connecting hole 54. When the limiting rod 52 moves outward radially along the connector 3, it drives the first spring 55 to displace and deform, generating elastic force. Then the limiting rod 52 disengages from the interior of the connecting groove 51, and the paint spray tube 4 loses its restraint, thus facilitating the separation of the paint spray tube 4 and the connector 3. After the paint spray tube 4 is completely separated from the connector 3, the limiting rod 52 returns to its original position under the action of the first spring 53. At this time, one end of the limiting rod 52 is flush with the outer surface of the connector 3.

[0036] Before painting, the user pulls the pull ring 66 towards the connecting pipe 1. Since both ends of the pull ring 66 are engaged with the interior of the first protective cover 61 and the second protective cover 62 via locking rods 65, when the pull ring 66 moves, the locking rods 65 at both ends move in the moving holes 63 inside the first protective cover 61 until they disengage from the limiting holes 64 of the second protective cover 62. Simultaneously, the pull ring 65 drives the third spring 68 to deform and compress, generating elastic force. When the pull ring 66 disengages from the interior of the second protective cover 62, the second protective cover 62 detaches from the surface of the first protective cover 61 and loses its restraint. Then, the second protective cover 62 rotates upwards to disengage from the first protective cover 61. At this point, the entire protective device 6 can be removed for subsequent painting operations. By setting up the protective device 6, the surface of the spray nozzle 2 is effectively protected, preventing foreign objects from clogging the inside of the spray nozzle 2 due to prolonged storage, thus affecting subsequent painting operations.

[0037] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.

Claims

1. A portable self-painting extension rod, comprising a connecting pipe (1), a spray head (2), a connecting head (3), a paint spraying pipe (4) and a connecting device (5), characterized in that: One end of the connecting pipe (1) is fixedly connected with a spray head (2), and the end away from the spray head (2) is fixedly connected with a connecting head (3), the inside of the connecting head (3) is provided with a paint spraying pipe (4), the connecting device (5) is arranged in the inside of the connecting head (3), the connecting device (5) comprises a connecting hole (54) and a limiting rod (52), the connecting hole (54) is arranged in the inside of the connecting head (3), the limiting rod (52) is slidably connected with the inside of the connecting hole (54) along the axis of the connecting hole (54), the surface of the paint spraying pipe (4) near one end of the connecting head (3) is provided with a connecting groove (51) matched with the limiting rod (52), one end of the limiting rod (52) near the connecting groove (51) is fixedly connected with a limiting block (53), the limiting block (53) and the inner wall of the connecting hole (54) slide along the axis of the connecting hole (54) and drive the limiting rod (52) to slide, and the outside of the limiting rod (52) in the connecting hole (54) is further sleeved with a first spring (55), one end of the first spring (55) is fixedly connected with the end away from the limiting block (53), and the other end is fixedly connected with the inner wall of the connecting hole (54).

2. A portable self-painting extension pole according to claim 1, characterized in that: The outer surface of the connecting head (3) is slidably connected with an abutting ring (56) along the axis, the outer surface of the connecting head (3) is fixedly connected with a positioning block (57), and a position adjusting assembly is arranged between the abutting ring (56) and the positioning block (57) to adjust the position of the abutting ring (56) in the axial direction of the connecting head (3).

3. A portable self-painting extension pole according to claim 2, characterized in that: The position adjusting assembly comprises a second spring (59), the length direction of the second spring (59) is distributed in parallel to the axis of the connecting head (3), and the length direction of the second spring (59) is fixedly connected with the abutting ring (56) and the positioning block (57) at both ends.

4. A portable self-painting extension pole according to claim 3, characterized in that: The abutting ring (56) and the positioning block (57) are further connected with a guide rod (58), the second spring (59) is coaxially sleeved on the outside of the guide rod (58), one end of the guide rod (58) is slidably connected with the positioning block (57) in the axial direction of the connecting head (3), and the other end is fixedly connected with the abutting ring (56).

5. The self-painting extension pole according to claim 1, wherein: The outer surface of the spray head (2) is provided with a protection device (6), the protection device (6) comprises a first protective cover (61) and a second protective cover (62), the first protective cover (61) is arranged on the lower surface of the spray head (2), the second protective cover (62) is arranged on the upper surface of the spray head (2), the second protective cover (62) is rotatably connected with the first protective cover (61) away from the connecting pipe (1), the first protective cover (61) is provided with a moving hole (63) at the end close to the connecting pipe (1), the second protective cover (62) is provided with a limiting hole (64) at the end close to the connecting pipe (1), the moving hole (63) is slidably connected with a clamping rod (65) clamped with the inner wall of the limiting hole (64), and one end of the clamping rod (65) extending out of the moving hole (63) is fixedly connected with a pull ring (66).

6. A self-painting extension pole according to claim 5, characterized in that: The pull ring (66) is axially slidably connected to the first protective cover (61) along the connecting pipe (1), the first protective cover (61) is fixedly connected with the moving rod (67) near the lower end of the connecting pipe (1), and the pull ring (66) is axially slidably connected to the moving rod (67) along the connecting pipe (1).

7. A portable self-painting extension pole according to claim 6, characterized in that: The surface of the moving rod (67) is sleeved with the third spring (68), the length direction of the third spring (68) is distributed in parallel to the axial direction of the connecting pipe (1), and the two ends are fixedly connected with the pull ring (66) and the first protective cover (61) near one end of the connecting pipe (1).

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