A paint roller structure convenient for adjustment

Abstract

The present invention discloses a paint roller structure that is convenient for adjustment. A plurality of feed pipe openings are provided on the central axis feed pipe. An outer cylinder is rotatably sleeved on the central axis feed pipe. A plurality of discharge holes are provided on the outer cylinder. A roller cotton is sleeved on the outer wall of the outer cylinder; a locking and anti-rotation rubber ring is provided between the lower fixed screw cap and the roller assembly base; the lower half section of the lower fixed screw cap is rotatably connected to the handle base. A second eccentric channel penetrating through the handle base is provided in the handle base. The second eccentric channel is used in cooperation with the first eccentric channel; a first hose communicating with the second eccentric channel is detachably provided at the lower end of the handle base. The input end of the first hose is connected to the output end of the feeding device. The present invention has beneficial effects such as being convenient for adjusting the discharge speed, reducing the labor intensity of operators, being convenient for replacing and cleaning parts, saving raw materials, and improving the painting effect.

Description

Technical Field

[0001] The present invention relates to a paint roller structure, and more particularly to a paint roller structure that facilitates the adjustment of the discharging speed. Background Art

[0002] Paint rollers are widely used in the decoration of walls and ceilings. During use, each time an operator uses the roller, the roller needs to be dipped in paint, and the above dipping action needs to be repeated continuously, resulting in a large labor intensity for the operator and low efficiency. At the same time, during the process of dipping paint by the feeding roller, paint constantly drips onto the ground, which not only wastes materials but also pollutes the surrounding environment. To reduce the labor intensity and improve the efficiency of the operator, technicians have developed a feeding roller that can automatically feed materials. Specifically, the feeding roller is connected to a feeding bucket containing paint through a hose (feeding device), and at the same time, a feed pump is used to transport the paint to the feeding roller for painting. However, the existing structure still has the following defects:

[0003] 1) During the feeding process, the amount of paint cannot be controlled according to actual needs, resulting in poor painting quality and being not conducive to popularization and use in high-quality painting projects. If a discharging control switch is simply added to the handle, when in use, the operator needs to hold the handle with one hand and adjust the switch with the other hand. As a result, when controlling the adjustment switch, the operator can only control the paint roller with one hand, which is not only laborious but also has poor stability due to single-handed control for painting, thus affecting the painting quality.

[0004] 2) During use, in order to reduce the overall weight of the roller, a roller with a smaller diameter is usually used for painting. However, when renovating the wall, since the wall has already been painted with a non-absorbent paint, when using a roller with a smaller diameter, it is extremely easy to slip, thus affecting the painting effect. By using a roller with a larger diameter to increase the contact area between the roller and the painted wall, although the slipping phenomenon can be solved, the weight of the entire roller will be increased, and the painting duration is generally long, thus increasing the labor intensity of the operator.

[0005] 3) It is not easy to disassemble and assemble, thus not facilitating the replacement of components and the cleaning of components, which not only reduces the service life but also affects the painting effect of different color paints next time.

[0006] 4) Although the automatic feeding method improves the efficiency and reduces the labor intensity of the operator, due to continuous feeding use, it does not have an anti-leakage function, resulting in serious leakage, affecting the construction quality, and causing more serious pollution to the surrounding environment (when cleaning the leaked materials after painting, it is not only time-consuming and laborious but also extremely difficult to clean them thoroughly), and more raw materials are wasted.

[0007] 5) During painting, the user will hold the feeding roller horizontally or vertically according to the actual painting needs. When using the roller brush longitudinally or horizontally, affected by the gravity of the paint, the paint will quickly flow to the lower part of the roller, resulting in serious uneven feeding at the upper and lower ends of the roller surface, greatly affecting the painting effect. At the same time, since leakage cannot be prevented, when the operator holds the feeding roller vertically, the leakage situation will be more serious.

[0008] Therefore, those skilled in the art are committed to providing an adjustable paint roller structure that can effectively solve the above technical problems. Summary of the Invention

[0009] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide an adjustable paint roller structure that can effectively solve the above technical problems.

[0010] To achieve the above object, the present invention provides an adjustable paint roller structure, including a central axis feeding pipe. A plurality of feeding pipe openings are provided on the central axis feeding pipe. An outer cylinder is rotatably sleeved on the central axis feeding pipe. A plurality of discharge holes are provided on the outer cylinder. A roller cotton is sleeved on the outer wall of the outer cylinder;

[0011] A feeding adjustment unit is arranged at the rear end of the central axis feeding pipe; the feeding adjustment unit includes a roller assembly base connected to the central axis feeding pipe. A first eccentric channel communicating with the central axis feeding pipe is provided in the roller assembly base;

[0012] The outer wall of the lower half of the roller assembly base is threadedly connected to the inner wall of the upper half of the lower fixing screw cap. A locking anti-rotation rubber ring is arranged between the lower fixing screw cap and the roller assembly base;

[0013] The lower half of the lower fixing screw cap is rotatably connected to a handle base. A second eccentric channel penetrating through the handle base is provided in the handle base. The second eccentric channel is used in cooperation with the first eccentric channel;

[0014] A first hose communicating with the second eccentric channel is detachably arranged at the lower end of the handle base. The input end of the first hose is connected to the output end of the feeding device.

[0015] Preferably, an upper fixing screw cap is threadedly sleeved on the upper half of the roller assembly base. A fixing fitting is arranged in the upper fixing screw cap; the fixing fitting includes a limiting part and an extending part integrally formed;

[0016] An outlet hole communicating with the first eccentric channel is formed in the upper half of the roller assembly base, the extension part is located in the outlet hole, and a second sealing ring is arranged between the outer wall of the extension part and the outlet hole;

[0017] The limiting part is located outside the outlet hole, and the diameter of the limiting part is larger than that of the extension part;

[0018] A circle of installation grooves is formed in the lower end of the roller assembly base, a U-shaped inner skeleton sealing ring is arranged in the installation grooves, and a lubricating and anti-friction gasket is arranged between the handle base and the lower fixing screw cap.

[0019] Preferably, a first hose connector is arranged at the lower end of the handle base;

[0020] The first hose connector includes a fixing seat. The upper half of the fixing seat is detachably connected with the handle base by threads. A third Y-shaped sealing ring is arranged on the inner wall of the fixing seat. The lower half of the fixing seat is provided with a clamping seat made of a deformable material. The inner wall of the clamping seat tilts upwards. A clamping seat limiting ring connected with the fixing seat is arranged at the lower end of the clamping seat. A limiting seat connected with the fixing seat is arranged at the lower end of the clamping seat limiting ring. The output end of the first hose is arranged in the pressing switch. The pressing switch is slidably arranged in the clamping seat limiting ring and the limiting seat. An inclined surface for cooperating with the clamping seat is arranged at the upper end of the pressing switch. A limiting table for cooperating with the limiting seat is arranged on the outer wall of the middle section of the pressing switch. A limiting section is arranged at the lower end of the pressing switch.

[0021] Preferably, the lower half of the lower fixing screw cap is connected with a lengthening rod connecting seat. A third eccentric channel penetrating through the lengthening rod connecting seat is formed in the lengthening rod connecting seat. The third eccentric channel is communicated with the first eccentric channel. The lengthening rod connecting seat is connected with the upper half of the lengthening rod; An assembly positioning groove is formed on the lower end surface of the roller assembly base, and an assembly positioning groove is formed on the upper end surface of the lengthening rod connecting seat. A positioning pin is arranged in the assembly positioning groove. The upper half of the positioning pin extends into the assembly positioning groove, and the upper end head of the positioning pin is of a conical structure;

[0022] A second hose is arranged inside the extension rod. The upper end of the second hose is connected to the lower end of the extension rod connecting seat and communicates with the third eccentric channel. The lower end of the extension rod is detachably provided with an extension rod assembly base. A fourth eccentric channel communicating with the second hose is opened inside the extension rod assembly base. The lower end of the extension rod assembly base is rotatably provided with a handle base. A second eccentric channel opened inside the handle base is used in cooperation with the fourth eccentric channel and communicates with the second hose through the fourth eccentric channel. The lower end of the second eccentric channel is connected to the first hose, and the first hose is connected to the feeding device.

[0023] Preferably, the upper and lower ends of the second hose are detachably connected to the extension rod connecting seat and the extension rod assembly base through a second hose connecting piece and a third hose connecting piece respectively. The second hose connecting piece and the third hose connecting piece have the same structure as the first hose connecting piece;

[0024] The inner walls of the upper and lower ends of the extension rod are respectively detachably and tightly fitted with a taper connection to the outer walls of the extension rod connecting seat and the extension rod assembly base. Anti-slip resistance rubber rings are arranged between the inner walls of the upper and lower ends of the extension rod and the outer walls of the extension rod assembly base and the extension rod connecting seat respectively;

[0025] A handle anti-slip rubber sleeve is sleeved on the handle base. A convex portion is arranged on the outer wall of the handle base. The convex portion extends along the length direction of the handle base. A positioning groove matched with the convex portion is opened on the inner wall of the handle anti-slip rubber sleeve.

[0026] Preferably, the central shaft feeding pipe includes an overflow section. Each feeding pipe opening is arranged along the length direction of the overflow section, and each feeding pipe opening gradually becomes larger from the rear end to the front end of the overflow section; the rear end of the overflow section is connected to the front end of the connecting section, the rear end of the connecting section is connected to the front end of the inclined section, the rear end of the inclined section is connected to the front end of the tail section, the second half of the tail section is connected to the feeding adjustment unit, and the overflow section, the connecting section, the inclined section and the tail section are communicated with each other and integrally formed.

[0027] Preferably, a positioning and fixing seat is sleeved on the second half of the overflow section. The outer cylinder includes a front end cover and a rear end cover;

[0028] The rear end cover is detachably connected to the rear end of the outer cylinder. The rear end cover is rotatably sleeved on the overflow section. A sealing ring base is arranged at the front end of the rear end cover. A Y-shaped sealing ring rotatably matched with the overflow section is arranged inside the sealing ring base;

[0029] A positioning member is provided at the front end of the overflow section. The positioning member includes a limiting portion and a connecting portion. The limiting portion and the connecting portion are connected by a smooth section. The connecting portion is inserted into the overflow section and is threadedly connected to the overflow section. The smooth section is located outside the overflow section and is sleeved with a positioning washer;

[0030] A rotating seat is rotatably sleeved on the smooth section. The rotating seat is detachably connected to a connecting cover plate located above the positioning member. A connecting screw is provided on the connecting cover plate. The connecting screw passes through the front end cover and is sleeved with a fixing nut. The front end cover is connected to the front end of the outer cylinder.

[0031] Preferably, the rotating seat includes a positioning portion and a limiting portion. A circle of second convex ribs is provided on the inner wall of the limiting portion. The limiting portion is rotationally matched with the smooth section through the second convex ribs. The limiting portion and the positioning washer cooperate to limit the up and down directions of the limiting portion; the positioning portion is detachably connected to the connecting cover plate by a plurality of screws;

[0032] The front end cover is tightly connected to the outer cylinder and is provided with a third sealing and fastening rubber ring. A fourth sealing and fastening rubber ring is provided between the fixing nut and the front end cover. The fixing nut is an unperforated single-sided opening nut; a shield support positioning hole is provided at the outer end of the fixing nut. A shield support column is provided on the inner side of the front end of the anti-paint splash protection cover. The shield support column is rotatably inserted into the shield support positioning hole. An elastic clamping portion is provided on the outer side of the rear end of the anti-paint splash protection cover. The anti-paint splash protection cover is detachably clamped on the central axis feeding pipe through the elastic clamping portion;

[0033] A first sealing and fastening rubber ring is provided between the rear end cover and the outer cylinder.

[0034] Preferably, a hollow weight-reducing flower drum is provided between the outer cylinder and the overflow section; the hollow weight-reducing flower drum includes a plurality of weight-reducing members arranged in a circular array. Through holes penetrating the weight-reducing members are provided along the length direction of each weight-reducing member. Parallel section discharge channels are formed by spacing between adjacent two weight-reducing members;

[0035] A circle of first convex ribs is provided on the inner wall of the rear end cover. The rear end cover is rotationally matched with the overflow section through the first convex ribs. A plurality of first assembly convex members for cooperating with the through holes are provided at the front end of the rear end cover. Each of the first assembly convex members is arranged in one-to-one correspondence with each of the through holes and is clamped in each of the through holes. The rear half section of the hollow weight-reducing flower drum forms a first installation area through each of the weight-reducing members. The sealing ring base and the Y-shaped sealing ring are both located in the first installation area;

[0036] A hub connection bracket is provided at the front end of the hollow weight-reducing hub. A number of second assembly protrusions for cooperating with the respective through holes are provided at the rear end of the hub connection bracket. The hub connection bracket is connected to each of the weight-reducing members by inserting the respective second assembly protrusions into the respective through holes one by one.

[0037] The overflow section rotatably passes through the hub connection bracket and is connected to the positioning member. A circumferential third convex rib for cooperating with the outer wall of the overflow section is provided on the inner wall of the hub connection bracket.

[0038] Preferably, a gap is provided between the outer wall of the hollow weight-reducing hub and the inner wall of the outer cylinder, and a gap is provided between the inner wall of the hollow weight-reducing hub and the outer wall of the overflow section.

[0039] The sizes of the respective weight-reducing members gradually increase from the inner end to the outer end. Both sides of the outer end of each weight-reducing member are arc-shaped, and an outwardly expanding discharge channel is formed between the outer ends of two adjacent weight-reducing members.

[0040] The beneficial effects of the present invention are as follows:

[0041] 1) The coating speed can be effectively controlled. When adjusting the discharge speed by rotating the handle base, both hands of the operator do not leave the coating roller, so that the painting quality will not be affected by adjusting the discharge speed, and the adjustment is more labor-saving and accurate.

[0042] 2) By providing the hollow weight-reducing hub in the present invention, a large-diameter roller can be used while reducing the weight, effectively avoiding the slipping phenomenon and reducing the labor intensity of the operator.

[0043] 3) It is easy to disassemble and assemble, so it is convenient to replace and clean the components.

[0044] 4) The problem of material leakage is effectively solved, avoiding pollution to the construction area and effectively saving raw materials.

[0045] 5) By providing a number of weight-reducing members, when the user holds the feeding roller horizontally or vertically for painting, affected by the gravity of the coating, the coating will quickly flow to the lower part of the roller, resulting in serious uneven feeding on the upper and lower ends of the roller surface. The problem is effectively solved, and the painting effect is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a schematic structural diagram of a specific embodiment of the present invention.

[0047] Figure 2 is a schematic structural diagram of the feeding adjustment unit.

[0048] Figure 3 isFigure 2 Schematic diagram of the partial enlarged structure at position A in

[0049] Figure 4 It is Figure 2 Schematic diagram of the partial enlarged structure at position B in

[0050] Figure 5 Schematic diagram of the upper half part of the structure with components such as an extended rod connecting seat and an extended rod added

[0051] Figure 6 It is Figure 5 Schematic diagram of the partial enlarged structure at position C in

[0052] Figure 7 Schematic diagram of the lower half part of the structure with components such as an extended rod connecting seat and an extended rod added

[0053] Figure 8 It is Figure 1 Schematic diagram of the structure without a feeding adjustment unit in

[0054] Figure 9 It is Figure 8 Schematic diagram of the partial enlarged structure at position D in

[0055] Figure 10 It is Figure 8 Schematic diagram of the partial enlarged structure at position E in

[0056] Figure 11 Schematic diagram of the structure in which each of the weight reduction parts is used in cooperation

[0057] Figure 12 It is Figure 11 Schematic diagram of the three-dimensional structure of

[0058] Figure 13 Schematic diagram of the structure in which a positioning hole is provided on the fixing nut

[0059] Figure 14 Schematic diagram of the anti-paint-spraying protection cover Specific embodiments

[0060] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0061] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0062] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "set", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] As Figures 1 to 14 shown, a paint roller structure that is convenient for adjustment includes a central axis feeding pipe 1. A number of feeding pipe openings 20 are provided on the central axis feeding pipe 1. An outer cylinder 7 is rotatably sleeved on the central axis feeding pipe 1. A number of discharge holes 21 are provided on the outer cylinder 7. A roller cotton 22 is sleeved on the outer wall of the outer cylinder 7;

[0064] A feeding adjustment unit 30 is provided at the rear end of the central axis feeding pipe 1; the feeding adjustment unit 30 includes a roller assembly base 301 connected to the central axis feeding pipe 1. A first eccentric channel 302 communicating with the central axis feeding pipe 1 is provided in the roller assembly base 301;

[0065] The outer wall of the lower half section of the roller assembly base 301 is threadedly connected to the inner wall of the upper half section of the lower fixing screw cap 303. A locking anti-rotation rubber ring 305 is provided between the lower fixing screw cap 303 and the roller assembly base 301. In the present invention, the locking anti-rotation rubber ring 305 can improve the tight fit degree between the lower fixing screw cap 303 and the roller assembly base 301. When the handle base 306 is rotated, since the handle base 306 is rotatably connected to the lower fixing screw cap 303 and has a certain frictional force, in order to prevent the application of a rotational force to the lower fixing screw cap 303 when the handle base 306 is rotated (after the handle base 306 is rotated for a long time, the lower fixing screw cap 303 will become loose), the locking anti-rotation rubber ring 305 is provided so that when the handle base 306 is rotated, the lower fixing screw cap 303 will not become loose due to the rotation of the handle base 306.

[0066] The lower half of the lower fixed screw cap 303 is rotatably connected to the handle base 306. A second eccentric channel 307 penetrating through the handle base 306 is provided in the handle base 306, and the second eccentric channel 307 is used in cooperation with the first eccentric channel 302;

[0067] A first hose 308 communicating with the second eccentric channel 307 is detachably provided at the lower end of the handle base 306, and the input end of the first hose 308 is connected to the output end of the feeding device. The feeding device is a prior art, and any existing structure capable of realizing the feeding function can be adopted, and no specific limitation is made here.

[0068] The upper half of the roller assembly base 301 is threadedly sleeved with an upper fixed screw cap 333, and a fixed fitting 309 is provided in the upper fixed screw cap 333; the fixed fitting 309 includes a limiting portion 309a and an extending portion 309b which are integrally formed;

[0069] A discharge hole 700 communicating with the first eccentric channel 302 is provided in the upper half of the roller assembly base 301. The extending portion 309b is located in the discharge hole 700, and a second sealing ring 701 is provided between the outer wall of the extending portion 309b and the discharge hole 700;

[0070] The limiting portion 309a is located outside the discharge hole 700, and the diameter of the limiting portion 309a is larger than the diameter of the extending portion 309b;

[0071] A circular installation groove 860 is provided at the lower end of the roller assembly base 301. A U-shaped inner skeleton sealing ring 861 is provided in the installation groove 860, and a lubricating and anti-friction washer 862 is provided between the handle base 306 and the lower fixed screw cap 303.

[0072] A first hose connector 90 is provided at the lower end of the handle base 306;

[0073] The first hose connector 90 includes a fixing seat 90a. The upper half of the fixing seat 90a is detachably connected to the handle base 306 by threads. A third Y-shaped sealing ring 90b is provided on the inner wall of the fixing seat 90a. A clamping seat 90c made of a deformable material is provided on the lower half of the fixing seat 90a. The inner wall of the clamping seat 90c warps upward. A clamping seat limiting ring 90d connected to the fixing seat 90a is provided at the lower end of the clamping seat 90c. A limiting seat 90e connected to the fixing seat 90a is provided at the lower end of the clamping seat limiting ring 90d. The output end of the first hose 308 is inserted into the push switch 80. The push switch 80 is slidably arranged in the clamping seat limiting ring 90d and the limiting seat 90e. An inclined surface 80a for cooperating with the clamping seat 90c is provided at the upper end of the push switch 80. A limiting platform 80b for cooperating with the limiting seat 90e is provided on the outer wall of the middle section of the push switch 80. A limiting section 80c is provided at the lower end of the push switch 80.

[0074] The lower half of the lower fixing screw cap 303 is connected to the extension rod connecting seat 310. A third eccentric channel 706 penetrating through the extension rod connecting seat 310 is provided in the extension rod connecting seat 310. The third eccentric channel 706 is communicated with the first eccentric channel 302. The extension rod connecting seat 310 is connected to the upper half of the extension rod 311. An assembly positioning groove 301a is provided on the lower end surface of the roller assembly base 301. An assembly positioning groove 310a is provided on the upper end surface of the extension rod connecting seat 310. A positioning pin 310b is provided in the assembly positioning groove 310a. The upper half of the positioning pin 310b extends into the assembly positioning groove 301a. The upper end of the positioning pin 310b is of a conical structure. When it is necessary to connect the roller assembly base 301 and the extension rod connecting seat 310, the positioning pin 310b installed in the assembly positioning groove 310a can be inserted into the assembly positioning groove 310a, so as to ensure the alignment and communication of the first eccentric channel 302 and the third eccentric channel 706, avoiding the problem of material blockage caused by the failure to align and communicate the first eccentric channel 302 and the third eccentric channel 706 when connecting the roller assembly base 301 and the extension rod connecting seat 310, and at the same time accelerating the installation speed.

[0075] A second hose 320 is disposed inside the lengthening rod 311. The upper end of the second hose 320 is connected to the lower end of the lengthening rod connecting base 310 and communicates with the third eccentric channel 706. The lower end of the lengthening rod 311 is detachably provided with a lengthening rod assembly base 312. A fourth eccentric channel 321 communicating with the second hose 320 is formed inside the lengthening rod assembly base 312. A handle base 306 is rotatably provided at the lower end of the lengthening rod assembly base 312. A second eccentric channel 307 formed inside the handle base 306 is used in cooperation with the fourth eccentric channel 321 and communicates with the second hose 320 through the fourth eccentric channel 321. The lower end of the second eccentric channel 307 is connected to a first hose 308, and the first hose 308 is connected to a feeding device.

[0076] The upper and lower ends of the second hose 320 are detachably connected to the lengthening rod connecting base 310 and the lengthening rod assembly base 312 through a second hose connector 800 and a third hose connector 801 respectively. The second hose connector 800 and the third hose connector 801 have the same structure as the first hose connector 90.

[0077] The inner walls of the upper and lower ends of the lengthening rod 311 are detachably and tightly fitted with a taper to be connected to the outer walls of the lengthening rod connecting base 310 and the lengthening rod assembly base 312 respectively. Anti-slip resistance rubber rings 900 are arranged between the inner walls of the upper and lower ends of the lengthening rod 311 and the outer walls of the lengthening rod assembly base 312 and the lengthening rod connecting base 310 respectively; by arranging the anti-slip resistance rubber rings 900, the friction force can be effectively increased. In addition, in the present invention, by arranging the lengthening rod 311, the painting of the top of the wall and walls at different heights can be satisfied, and the applicability is wider.

[0078] A handle anti-slip rubber sleeve 901 is sleeved on the handle base 306. A convex portion is arranged on the outer wall of the handle base 306, and the convex portion extends along the length direction of the handle base 306. A positioning groove for cooperating with the convex portion is formed on the inner wall of the handle anti-slip rubber sleeve 901.

[0079] The central axis feeding pipe 1 includes an overflow section 50. Each feeding pipe opening 20 is arranged along the length direction of the overflow section 50, and each feeding pipe opening 20 gradually becomes larger from the rear end to the front end of the overflow section 50; the rear end of the overflow section 50 is connected to the front end of a connecting section 51, the rear end of the connecting section 51 is connected to the front end of an inclined section 52, the rear end of the inclined section 52 is connected to the front end of a tail section 53, the rear half of the tail section 53 is connected to the feeding adjustment unit 30, and the overflow section 50, the connecting section 51, the inclined section 52 and the tail section 53 communicate with each other and are integrally formed.

[0080] The latter half of the overflow section 50 is sleeved with a positioning and fixing seat 59, and the outer cylinder 7 includes a front end cover 13 and a rear end cover 2;

[0081] The rear end cover 2 is detachably connected to the rear end of the outer cylinder 7. The rear end cover 2 is rotatably sleeved on the overflow section 50. A sealing ring base 61 is provided at the front end of the rear end cover 2, and a Y-shaped sealing ring 62 that rotates and cooperates with the overflow section 50 is arranged inside the sealing ring base 61;

[0082] A positioning member 105 is arranged at the front end of the overflow section 50. The positioning member 105 includes a limiting portion 105a and a connecting portion 105b. The limiting portion 105a and the connecting portion 105b are connected by a smooth section 105c. The connecting portion 105b is inserted into the overflow section 50 and is threadedly connected to the overflow section 50. The smooth section 105c is located outside the overflow section 50 and is sleeved with a positioning washer 200;

[0083] A rotating seat 11 is rotatably sleeved on the smooth section 105c. The rotating seat 11 is detachably connected to a connecting cover plate 12 located above the positioning member 105. A connecting screw 15 is arranged on the connecting cover plate 12. The connecting screw 15 passes through the front end cover 13 and is sleeved with a fixing nut 16. The front end cover 13 is connected to the front end of the outer cylinder 7.

[0084] The rotating seat 11 includes a positioning portion 11a and a limiting portion 11b. A circle of second convex ridges 107 is arranged on the inner wall of the limiting portion 11b. The limiting portion 11b is rotationally matched with the smooth section 105c through the second convex ridges 107. The limiting portion 105a and the positioning washer 200 cooperate to limit the up and down direction of the limiting portion 11b; the positioning portion 11a is detachably connected to the connecting cover plate 12 by a plurality of screws 108;

[0085] The front end cover 13 is tightly and fixedly connected to the outer cylinder 7 and is provided with a third sealing and fastening rubber ring 109. In the present invention, the front end cover 13 and the outer cylinder 7 are detachably connected by tight fitting. By providing the third sealing and fastening rubber ring 109, not only can the tight fitting degree between the front end cover 13 and the outer cylinder 7 be increased, but also the sealing performance can be improved, further avoiding the leakage of the coating. A fourth sealing and fastening rubber ring 113 is provided between the fixing nut 16 and the front end cover 13. The fixing nut 16 is a non-penetrating single-sided opening nut. An outer end of the fixing nut 16 is provided with a shield support positioning hole 16a. A front end inner side of the anti-coating splash shield 950 is provided with a shield support column 951. The shield support column 951 is rotatably inserted into the shield support positioning hole 16a. A rear end outer side of the anti-coating splash shield 950 is provided with an elastic clamping portion 953. The anti-coating splash shield 950 is detachably clamped on the central axis feeding pipe 1 through the elastic clamping portion 953. During use, by providing the anti-coating splash shield 950, it is possible to effectively avoid the coating splashing everywhere due to the rapid rotation of the roller during painting.

[0086] A first sealing and fastening rubber ring 72 is provided between the rear end cover 2 and the outer cylinder 7. The rear end cover 2 and the outer cylinder 7 are detachably connected by tight fitting. The first sealing and fastening rubber ring 72 can not only play a role in sealing to prevent material leakage, but also further improve the tight fitting degree between the rear end cover 2 and the outer cylinder 7.

[0087] A hollow weight-reducing flower drum 40 is provided between the outer cylinder 7 and the overflow section 50. The hollow weight-reducing flower drum 40 includes a plurality of weight-reducing members 4a arranged in a circular array. Through holes 4b penetrating through the weight-reducing members 4a are provided along the length directions of the weight-reducing members 4a. Parallel section discharge channels 4d are formed by arranging adjacent two weight-reducing members 4a at intervals. An inner wall of the rear end cover 2 is provided with a first convex rib 2a. The rear end cover 2 is rotationally matched with the overflow section 50 through the first convex rib 2a. By rotationally contacting the overflow section 50 through the first convex rib 2a, the friction force between the rear end cover 2 and the overflow section 50 is effectively reduced, making the rotation smoother.

[0088] A plurality of first assembly convex members 41 are provided at the front end of the rear end cover 2 for cooperating with the through holes 4b. Each of the first assembly convex members 41 corresponds to one of the through holes 4b and is inserted into each of the through holes 4b. In the present invention, the first assembly convex members 41 are inserted into the through holes 4b in a tightly and detachably manner. A rear half section of the hollow weight-reducing flower drum 40 forms a first installation area 43 through the weight-reducing members 4a. The sealing ring base 61 and the Y-shaped sealing ring 62 are both located in the first installation area 43.

[0089] A hub connection bracket 56 is provided at the front end of the hollow weight-reducing hub 40. A plurality of second assembly protrusions 56a for cooperating with the through holes 4b are provided at the rear end of the hub connection bracket 56. The hub connection bracket 56 is connected to each of the weight-reducing members 4a by inserting each of the second assembly protrusions 56a into the corresponding through holes 4b one by one; the second assembly protrusions 56a on the hub connection bracket 56 can not only connect the weight-reducing members 4a, but also increase the stability. In addition, the hollow weight-reducing hub 40 includes a plurality of weight-reducing members 4a (the number of weight-reducing members 4a in the present invention is six). Through holes 4b are provided on each of the weight-reducing members 4a. The advantage of providing the through holes 4b is that: when the paint fills the entire drum, the weight of the drum will increase, especially for a drum with a larger diameter, the increased weight is particularly obvious. By providing the through holes 4b, the weight of each weight-reducing member 4a can be effectively reduced, and when the operator works for a long time, the labor intensity of the operator can be effectively reduced.

[0090] Preferably, in the present invention, the second assembly protrusion 56a is detachably clamped in the through hole 4b in a tightly fitting manner.

[0091] The overflow section 50 rotatably passes through the hub connection bracket 56 and is connected to the positioning member 105. A ring of third convex ribs 115 for cooperating with the outer wall of the overflow section 50 is provided on the inner wall of the hub connection bracket 56.

[0092] The outer wall of the hollow weight-reducing hub 40 is spaced from the inner wall of the outer cylinder 7, and the inner wall of the hollow weight-reducing hub 40 is spaced from the outer wall of the overflow section 50;

[0093] The sizes of the weight-reducing members 4a gradually increase from the inner end to the outer end. The outer ends of both sides of each weight-reducing member 4a are arc-shaped, and an outwardly expanding discharge channel 4e is formed between the outer ends of two adjacent weight-reducing members 4a.

[0094] In the present invention, due to the discharge between two adjacent weight-reducing members 4a, since the distance between two adjacent weight-reducing members 4a is small, when the paint passes between two adjacent weight-reducing members 4a, not only is the space small, but also there is adhesion (the paint has viscosity), so that the paint can be effectively prevented from quickly accumulating in one place, solving the problem that when the user holds the feeding drum horizontally or vertically for painting, affected by the gravity of the paint, the paint will quickly flow to the lower part of the drum, resulting in serious uneven feeding on the upper and lower ends of the drum surface, and effectively improving the painting effect.

[0095] The present invention is applicable to the situation where the wall surface has been coated with a non-water-absorbent paint and renovation is desired. Since the water absorption rate is relatively low, it is easy to slip when using a roller with a smaller diameter for painting. Therefore, the present invention adopts a large-diameter solution, which not only avoids the problem of slipping during painting but also reduces the weight of the entire roller and the labor intensity of the operator.

[0096] When it is necessary to disassemble, clean or replace parts, the fixing nut 16 is removed by hand, and then the front end cover 13 is separated from the outer cylinder 7 to remove the front end cover 13. The connecting cover plate 12 is removed by removing the screw 108. Then, the positioning member 105 is rotated to separate it from the overflow section 50. Subsequently, the hollow weight-reducing flower drum 40 can be taken out for cleaning.

[0097] During use, the paint flows out through the feed pipe opening 20 provided on the overflow section 50. The flowing paint is located between each weight-reducing member 4a and flows outwards through the discharge channel 4d formed between two adjacent weight-reducing members 4a. Subsequently, after flowing out through the discharge hole 21 and adhering to the roller cotton 22, painting can begin.

[0098] When it is necessary to adjust the feeding speed through the feeding adjustment unit, the specific method is as follows: The paint enters the first hose 308, the second eccentric channel 307, and the first eccentric channel 302 in sequence through the feeding device and then flows into the central axis feeding pipe 5. When it is necessary to adjust the discharging speed, the operator rotates the handle base 306. At this time, the second eccentric channel 307 rotates following the rotation of the handle base 306. By rotating the second eccentric channel 307, the coincidence degree between the upper end (output end) of the second eccentric channel 307 and the lower end (input end) of the first eccentric channel 302 is adjusted to control the discharging speed. Through this adjustment method, when the operator adjusts, one hand holds the roller assembly base 301, and the other hand holds the handle anti-slip rubber sleeve 901. Therefore, when adjustment is needed during the painting process, the operator's hand-holding posture does not need to be changed, and the problem of poor painting stability caused by holding the feeding unit with one hand when adjusting the discharging speed is also avoided.

[0099] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art should fall within the protection scope determined by the claims.

Claims

1. An adjustable paint roller structure, characterized in that: It includes a central axis feeding pipe (1), and a number of feeding pipe openings (20) are provided on the central axis feeding pipe (1). An outer cylinder (7) is rotatably sleeved on the central axis feeding pipe (1), and a number of discharge holes (21) are provided on the outer cylinder (7). A roller cotton (22) is sleeved on the outer wall of the outer cylinder (7). A feeding adjustment unit (30) is provided at the rear end of the central axis feeding pipe (1); the feeding adjustment unit (30) includes a roller assembly base (301) connected to the central axis feeding pipe (1), and a first eccentric channel (302) communicating with the central axis feeding pipe (1) is provided in the roller assembly base (301). The outer wall of the lower half section of the roller assembly base (301) is threadedly connected to the inner wall of the upper half section of the lower fixing screw cap (303), and a locking anti-rotation rubber ring (305) is provided between the lower fixing screw cap (303) and the roller assembly base (301). The lower half section of the lower fixing screw cap (303) is rotatably connected to the handle base (306), and a second eccentric channel (307) penetrating through the handle base (306) is provided in the handle base (306), and the second eccentric channel (307) is used in cooperation with the first eccentric channel (302). A first hose (308) communicating with the second eccentric channel (307) is detachably provided at the lower end of the handle base (306), and the input end of the first hose (308) is connected to the output end of the feeding device; an upper fixing screw cap (333) is threadedly sleeved on the upper half section of the roller assembly base (301), and a fixing fitting (309) is provided in the upper fixing screw cap (333); the fixing fitting (309) includes a limiting part (309a) and an extending part (309b) formed integrally. A discharge hole (700) communicating with the first eccentric channel (302) is provided in the upper half section of the roller assembly base (301), the extending part (309b) is located in the discharge hole (700), and a second sealing ring (701) is provided between the outer wall of the extending part (309b) and the discharge hole (700). The limiting part (309a) is located outside the discharge hole (700), and the diameter of the limiting part (309a) is larger than the diameter of the extending part (309b). A circular installation groove (860) is provided at the lower end of the roller assembly base (301), a U-shaped inner skeleton sealing ring (861) is provided in the installation groove (860), and a lubricating and anti-friction gasket (862) is provided between the handle base (306) and the lower fixing screw cap (303).

2. The adjustable paint roller structure according to claim 1, characterized in that: A first hose connector (90) is provided at the lower end of the handle base (306). The first hose connector (90) includes a fixing seat (90a). The upper half of the fixing seat (90a) is detachably connected to the handle base (306) by threading. A third Y-shaped sealing ring (90b) is provided on the inner wall of the fixing seat (90a). The lower half of the fixing seat (90a) is provided with a clamping seat (90c) made of a deformable material. The inner wall of the clamping seat (90c) warps upward. A clamping seat limiting ring (90d) connected to the fixing seat (90a) is provided at the lower end of the clamping seat (90c). A limiting seat (90e) connected to the fixing seat (90a) is provided at the lower end of the clamping seat limiting ring (90d). The output end of the first hose (308) is inserted into the push switch (80). The push switch (80) is slidably arranged in the clamping seat limiting ring (90d) and the limiting seat (90e). The upper end of the push switch (80) has an inclined surface (80a) for cooperating with the clamping seat (90c). A limiting platform (80b) for cooperating with the limiting seat (90e) is provided on the outer wall of the middle section of the push switch (80). A limiting section (80c) is provided at the lower end of the push switch (80).

3. The adjustable paint roller structure according to claim 2, characterized in that: The lower half of the lower fixing screw cap (303) is connected to the extension rod connecting seat (310). A third eccentric channel (706) penetrating through the extension rod connecting seat (310) is formed in the extension rod connecting seat (310). The third eccentric channel (706) is communicated with the first eccentric channel (302). The extension rod connecting seat (310) is connected to the upper half of the extension rod (311). An assembly positioning groove (301a) is formed on the lower end surface of the roller assembly base (301). An assembly positioning groove (310a) is formed on the upper end surface of the extension rod connecting seat (310). A positioning pin (310b) is arranged in the assembly positioning groove (310a). The upper half of the positioning pin (310b) extends into the assembly positioning groove (301a). The upper end of the positioning pin (310b) is of a conical structure. A second hose (320) is arranged in the extension rod (311). The upper end of the second hose (320) is connected to the lower end of the extension rod connecting seat (310) and is communicated with the third eccentric channel (706). The lower end of the extension rod (311) is detachably provided with an extension rod assembly base (312). A fourth eccentric channel (321) communicated with the second hose (320) is formed in the extension rod assembly base (312). The lower end of the extension rod assembly base (312) is rotatably provided with a handle base (306). The second eccentric channel (307) formed in the handle base (306) cooperates with the fourth eccentric channel (321) and is communicated with the second hose (320) through the fourth eccentric channel (321). The lower end of the second eccentric channel (307) is communicated with the first hose (308). The first hose (308) is connected to the feeding device.

4. The adjustable paint roller structure according to claim 3, characterized in that: The upper and lower ends of the second hose (320) are detachably connected to the extension rod connection base (310) and the extension rod assembly base (312) through a second hose connector (800) and a third hose connector (801) respectively. The second hose connector (800) and the third hose connector (801) have the same structure as the first hose connector (90); The inner walls of the upper and lower ends of the extension rod (311) are detachably connected to the outer walls of the extension rod connection base (310) and the extension rod assembly base (312) by a tight fit taper connection. Anti-slip resistance rubber rings (900) are provided between the inner walls of the upper and lower ends of the extension rod (311) and the outer walls of the extension rod assembly base (312) and the extension rod connection base (310); A handle anti-slip rubber sleeve (901) is sleeved on the handle base (306). The outer wall of the handle base (306) is provided with a convex portion that extends along the length direction of the handle base (306). The inner wall of the handle anti-slip rubber sleeve (901) is provided with a positioning groove that is used in cooperation with the convex portion; 5. The adjustable paint roller structure according to any one of claims 1 to 4, characterized in that: The central axis feed pipe (1) includes an overflow section (50). Each feed pipe opening (20) is arranged along the length direction of the overflow section (50), and each feed pipe opening (20) gradually becomes larger from the rear end to the front end of the overflow section (50); the rear end of the overflow section (50) is connected to the front end of a connection section (51). The rear end of the connection section (51) is connected to the front end of an inclined section (52). The rear end of the inclined section (52) is connected to the front end of a tail section (53). The second half of the tail section (53) is connected to the feed adjustment unit (30). The overflow section (50), the connection section (51), the inclined section (52) and the tail section (53) are interconnected and integrally formed; 6. The adjustable paint roller structure according to claim 5, characterized in that: The second half of the overflow section (50) is sleeved with a positioning and fixing seat (59). The outer cylinder (7) includes a front end cover (13) and a rear end cover (2); The rear end cover (2) is detachably connected to the rear end of the outer cylinder (7). The rear end cover (2) is rotatably sleeved on the overflow section (50). The front end of the rear end cover (2) is provided with a sealing ring base (61). A Y-shaped sealing ring (62) that is rotatably matched with the overflow section (50) is arranged in the sealing ring base (61); A positioning member (105) is arranged at the front end of the overflow section (50). The positioning member (105) includes a limiting portion (105a) and a connecting portion (105b). The limiting portion (105a) is connected to the connecting portion (105b) through a smooth section (105c). The connecting portion (105b) is arranged in the overflow section (50) and is threadedly connected to the overflow section (50). The smooth section (105c) is located outside the overflow section (50) and is sleeved with a positioning washer (200); A rotating seat (11) is rotatably sleeved on the smooth section (105c). The rotating seat (11) is detachably connected to a connecting cover plate (12) located above the positioning member (105). A connecting screw rod (15) is arranged on the connecting cover plate (12). The connecting screw rod (15) passes through the front end cover (13) and is sleeved with a fixing nut (16). The front end cover (13) is connected to the front end of the outer cylinder (7).

7. The adjustable paint roller structure according to claim 6, characterized in that: The rotating seat (11) includes a positioning portion (11a) and a limiting portion (11b). A circle of second convex ribs (107) is arranged on the inner wall of the limiting portion (11b). The limiting portion (11b) is rotationally matched with the smooth section (105c) through the second convex ribs (107). The limiting portion (105a) is matched with the positioning washer (200) to limit the up and down direction of the limiting portion (11b). The positioning portion (11a) is detachably connected to the connecting cover plate (12) through a plurality of screws (108). The front end cover (13) is tightly connected to the outer cylinder (7) and is provided with a third sealing and fastening rubber ring (109). A fourth sealing and fastening rubber ring (113) is arranged between the fixing nut (16) and the front end cover (13). The fixing nut (16) is a non-through single-sided open-hole nut. A shield support positioning hole (16a) is opened at the outer end of the fixing nut (16). A shield support column (951) is arranged on the inner side of the front end of the anti-paint-splashing protection cover (950). The shield support column (951) is rotatably inserted into the shield support positioning hole (16a). An elastic clamping portion (953) is arranged on the outer side of the rear end of the anti-paint-splashing protection cover (950). The anti-paint-splashing protection cover (950) is detachably clamped on the central axis feeding pipe (1) through the elastic clamping portion (953). A first sealing and fastening rubber ring (72) is arranged between the rear end cover (2) and the outer cylinder (7).

8. The adjustable paint roller structure according to claim 7, characterized in that: A hollow weight-reducing flower drum (40) is arranged between the outer cylinder (7) and the overflow section (50). The hollow weight-reducing flower drum (40) includes a plurality of weight-reducing members (4a) arranged in a circular array. Through holes (4b) penetrating through the weight-reducing members (4a) are opened along the length direction of each weight-reducing member (4a). Parallel-section discharge channels (4d) are formed by arranging intervals between adjacent two weight-reducing members (4a). A first convex rib (2a) is provided on the inner wall of the rear end cover (2). The rear end cover (2) is rotationally engaged with the overflow section (50) through the first convex rib (2a). A plurality of first assembly convex members (41) for cooperating with the through holes (4b) are provided at the front end of the rear end cover (2). Each of the first assembly convex members (41) is arranged in one-to-one correspondence with each of the through holes (4b) and is clamped in each of the through holes (4b). The rear half of the hollow weight-reduced flower drum (40) forms a first installation area (43) through each of the weight-reducing members (4a). The sealing ring base (61) and the Y-shaped sealing ring (62) are both located in the first installation area (43). A flower drum connection bracket (56) is provided at the front end of the hollow weight-reduced flower drum (40). A plurality of second assembly convex members (56a) for cooperating with each of the through holes (4b) are provided at the rear end of the flower drum connection bracket (56). The flower drum connection bracket (56) is inserted into each of the through holes (4b) in one-to-one correspondence through each of the second assembly convex members (56a) and is simultaneously connected to each of the weight-reducing members (4a). The overflow section (50) rotatably passes through the flower drum connection bracket (56) and is connected to the positioning member (105). A third convex rib (115) for cooperating with the outer wall of the overflow section (50) is provided on the inner wall of the flower drum connection bracket (56).

9. The adjustable paint roller structure according to claim 8, characterized in that: The outer wall of the hollow weight-reduced flower drum (40) is spaced from the inner wall of the outer cylinder (7). The inner wall of the hollow weight-reduced flower drum (40) is spaced from the outer wall of the overflow section (50). The dimensions of each of the weight-reducing members (4a) gradually increase from the inner end to the outer end. Both sides of the outer end of each of the weight-reducing members (4a) are arc-shaped. An outwardly expanding discharge channel (4e) is formed between the outer ends of each adjacent pair of weight-reducing members (4a).

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