A weight-reducing paint roller

Abstract

The present invention discloses a weight-reducing paint roller. A feed adjustment unit is provided at the rear end of a feed tube. Several feed tube openings extending through the feed tube are defined in the front half of the feed tube. The front half of the feed tube is inserted into a hollow weight-reducing hub. The hollow weight-reducing hub includes several weight-reducing elements arranged in a circular array. Each weight-reducing element has through-holes extending through the length of each element. Adjacent weight-reducing elements are spaced apart to form parallel discharge channels. The rear ends of the weight-reducing elements are connected by a support column end cap. The rear half of the support column end cap is removably fitted with a screw cap. The inner wall of the screw cap rotatably engages the outer wall of the feed tube. The rear half of the outer barrel is fitted over the support column end cap. Several overflow holes are defined in the outer barrel, and a roller pad is provided on the outer barrel. The present invention has the beneficial effects of reducing the roller weight, eliminating slippage, facilitating assembly and disassembly, avoiding material waste, facilitating adjustment of the discharge speed, and preventing leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of decoration tools, in particular to a weight-reducing paint roller. Background Art

[0002] Paint rollers are widely used in decoration of walls and ceilings. When in use, the operator needs to dip the roller into paint every time he uses the roller, and repeat the dipping action continuously, which leads to high labor intensity and low efficiency for the operator. At the same time, in the process of dipping the paint through the feed roller, paint keeps dripping onto the ground, which not only wastes materials but also pollutes the surrounding environment. In order to reduce the labor intensity and efficiency of the operator, technicians have developed a feed roller with automatic feeding. Specifically, the feed roller is connected to a feed bucket filled with paint (feeding device) through a hose, and the paint is delivered to the feed roller by a feed pump, so that the paint is applied. However, this existing structure still has the following defects:

[0003] 1) In order to reduce the overall weight of the roller, a smaller diameter roller is usually used for painting. However, when renovating the wall, since the wall has been painted with non-absorbent paint, it is very easy to slip when using a smaller diameter roller, which affects the painting effect. Although the slipping problem can be solved by increasing the contact area between the roller and the wall, the weight of the entire roller will be increased, and the painting time will generally be longer, thereby increasing the labor intensity of the operator and causing a lot of waste.

[0004] 2) It is not easy to disassemble and assemble, which makes it inconvenient to replace and clean parts, which not only reduces the service life, but also affects the effect of painting with different colors next time;

[0005] 3) Although the automatic feeding method improves efficiency and reduces the labor intensity of operators, it does not have a leakage-proof function due to the continuous feeding method, which leads to serious leakage, affecting the construction quality and causing more serious pollution to the surrounding environment (after painting, cleaning up the leaked material is not only time-consuming and laborious, but also extremely difficult to clean it thoroughly), and more raw materials are wasted;

[0006] 4) During the feeding process, the amount of paint cannot be controlled according to actual needs, resulting in poor painting quality, which is not conducive to the promotion and use of high-quality coating projects;

[0007] 5) When painting, the user will hold the feed roller horizontally or vertically according to the actual painting needs. When the roller brush is used vertically or horizontally, the paint will flow quickly to the bottom of the roller due to the influence of the paint's gravity, resulting in serious uneven feeding of the upper and lower ends of the roller surface, which greatly affects the painting effect. At the same time, since leakage cannot be prevented, when the operator uses the feed roller vertically, the leakage will be more serious.

[0008] Therefore, those skilled in the art are committed to providing a weight-reducing paint roller that can effectively solve the above technical problems. Summary of the Invention

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

[0010] To achieve the above-mentioned object, the present invention provides a weight-reduced paint roller, comprising a feed pipe, a feed adjustment unit being provided at the rear end of the feed pipe, and a plurality of feed pipe openings penetrating the feed pipe being provided at the front half of the feed pipe;

[0011] The front half of the feed pipe is passed through the hollow weight-reducing hub; the hollow weight-reducing hub includes a plurality of weight-reducing parts arranged in a circular array, and a through hole penetrating the weight-reducing part is opened along the length direction of each weight-reducing part, and each adjacent two weight-reducing parts are spaced apart to form a parallel section discharge channel, the rear end of each weight-reducing part is connected to the bracket column end cover through a first assembly protrusion, and the front end of each weight-reducing part is connected to the hub connection bracket through a second assembly protrusion;

[0012] The feed pipe is sleeved with a positioning base, the positioning base is sleeved with a first Y-shaped sealing ring, and the bracket column end cover is rotatably sleeved on the first Y-shaped sealing ring;

[0013] The rear half of the bracket column end cover is detachably sleeved with a screw cover, the inner wall of the screw cover is rotatably matched with the outer wall of the feed pipe, and the rear half of the outer cylinder is sleeved on the bracket column end cover; a plurality of overflow holes are opened on the outer cylinder, and a roller cotton is sleeved on the outer cylinder;

[0014] The front end of the outer cylinder is provided with a roller end cover, and the rear end of the roller end cover is provided with a plurality of end lock spring clips in a circular array. The rear end of the roller end cover is provided with a plurality of auxiliary fastening plates connected to the outer wall of the end lock spring clip, and the outer wall of each auxiliary fastening plate is connected to the inner wall of the outer cylinder;

[0015] A supporting end is provided in the outer cylinder, and the front half of the supporting end can be rotatably located in each of the end locking spring clamps, and the middle part of the supporting end is located outside the end locking spring clamp and is detachably connected to the hub connecting bracket; a protrusion is provided at the rear end of the middle part of the supporting end, and the protrusion is located in the hub connecting bracket, and the inner wall of the hub connecting bracket is fitted with the outer wall of the protrusion, and a limiting groove is provided at the rear end of the protrusion, and the front end of the feed pipe can be rotatably located in the limiting groove.

[0016] Preferably, a groove is provided on the upper end of the support end, and a circle of clamping sections is provided on the outer wall of the front half of the support end;

[0017] Each adjacent two end lock spring clips are arranged at intervals, the number of the auxiliary fastening plates is three, and each of the auxiliary fastening plates is arranged in a circular array around the center line of the roller end cover. The inner walls of the end lock spring clips connected to each of the auxiliary fastening plates are not provided with a clamping portion, and the inner walls of the remaining end lock spring clips are provided with a clamping portion used in conjunction with the clamping section. The supporting end and the roller end cover are detachably connected to each other through the clamping section and the end lock spring clip;

[0018] A shield support positioning hole is provided at the outer end of the roller end cover, and a shield support column is provided on the inner side of the front end of the paint splash protection cover. The shield support column can be rotatably inserted into the shield support positioning hole, and an elastic clamping part is provided on the outer side of the rear end of the paint splash protection cover. The paint splash protection cover can be detachably clamped on the feed pipe through the elastic clamping part.

[0019] Preferably, a spherical top bead is provided in the protrusion, and the inner wall of the protrusion is provided with a circle of first ridges with a semicircular cross-section. A rotating part is provided at the front end of the feeding tube, and the feeding tube opening is not provided on the rotating part, and the rotating part is located in the limiting groove, and the rotating part and the first ridge rotate in cooperation.

[0020] Preferably, a first sealing and fastening rubber ring is sleeved between the outer wall of the drum end cover and the inner wall of the outer cylinder;

[0021] The first assembly protrusion includes an annular positioning section, the rear end of which is connected to the bracket column end cover, and the front end of the annular positioning section is provided with a plurality of extension sections integrally formed with the annular positioning section, each of which is respectively provided in a one-to-one correspondence with each of the through holes, each of which is inserted into each of the through holes and detachably connected to each of the weight-reducing parts by being tightly fitted with each of the through holes; a second assembly protrusion is tightly fitted in the front half of each of the through holes;

[0022] The outer wall of the rear half section of the bracket column end cover is detachably connected to the screw cap thread, the middle outer wall of the bracket column end cover is provided with a connecting portion integrally formed with the bracket column end cover, the outer wall of the rear half section of the connecting portion is provided with a circle of bosses, the outer tube is connected to the connecting portion and the bosses at the same time, and a second sealing and fastening rubber ring is provided between the outer wall of the front half section of the connecting portion and the outer tube;

[0023] The size of each weight-reducing member gradually increases from the inner end to the outer end. Both sides of the outer end of each weight-reducing member are arc-shaped, and an outward-expanding discharge channel is formed between the outer ends of each adjacent two weight-reducing members.

[0024] Preferably, the inner wall of the screw cap is provided with a circle of second ridges with a semicircular cross section, and each of the second ridges is rotatably engaged with the outer wall of the feeding tube;

[0025] The outer wall of the positioning base is provided with a circle of card grooves, the first Y-shaped sealing ring is detachably mounted in the card groove, and the rear end of the positioning base is provided with a fitting portion, and the rear end of the fitting portion is rotatably fitted with the screw cover.

[0026] Preferably, the feed pipe includes an overflow section, each of the feed pipe openings is arranged along the length direction of the overflow section, and the diameter of each feed pipe opening gradually increases 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 oblique line section, the rear end of the oblique line section is connected to the front end of the tail section, and the overflow section, connecting section, oblique line section and tail section are interconnected and integrally formed;

[0027] The outer wall of the hollow weight-reducing hub is spaced apart from the inner wall of the outer tube, and the inner wall of the hollow weight-reducing hub is spaced apart from the outer wall of the overflow section;

[0028] The feed regulating unit includes a roller assembly base connected to the tail section, and a first eccentric channel communicating with the feed pipe is opened in the roller assembly base;

[0029] 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 fixed screw cover, and a locking and anti-rotation rubber ring is provided between the lower fixed screw cover and the roller assembly base;

[0030] The lower half of the lower fixed screw cover is rotatably connected to the handle base, and a second eccentric channel is opened in the handle base and passes through the handle base, and the second eccentric channel is used in conjunction with the first eccentric channel;

[0031] A first hose communicating with the second eccentric channel is detachably provided at the lower end of the handle base, and an input end of the first hose is connected to an output end of the feeding device.

[0032] Preferably, an upper threaded sleeve of the upper half of the roller assembly base is provided with an upper fixed screw cap, and a fixed assembly part is provided inside the upper fixed screw cap; the fixed assembly part includes an integrally formed limiting portion and an extending portion;

[0033] The upper half of the roller assembly base is provided with a discharge hole connected to the first eccentric channel, the extension portion is located in the discharge hole, and a second sealing ring is provided between the outer wall of the extension portion and the discharge hole;

[0034] The limiting portion is located outside the discharge hole, and the diameter of the limiting portion is larger than the diameter of the extending portion;

[0035] A circle of mounting groove is provided at the lower end of the roller assembly base, a U-shaped inner skeleton sealing ring is provided in the mounting groove, and a lubricating friction washer is provided between the handle base and the lower fixing screw cover.

[0036] Preferably, a first hose connector is provided at the lower end of the handle base;

[0037] The first hose connector includes a fixed seat, the upper half of the fixed seat is detachably connected to the handle base through a thread, the inner wall of the fixed seat is provided with a third Y-shaped sealing ring, the lower half of the fixed seat is provided with a clamping seat made of deformed material, the inner wall of the clamping seat is tilted upward, the lower end of the clamping seat is provided with a clamping seat limiting ring connected to the fixed seat, the lower end of the clamping seat limiting ring is provided with a limit seat connected to the fixed seat, the output end of the first hose is passed through the press switch, the press switch is slidably arranged in the clamping seat limiting ring and the limit seat, the upper end of the press switch has an inclined surface for use with the clamping seat, the outer wall of the middle section of the press switch is provided with a limit platform for use with the limit seat, and the lower end of the press switch is provided with a limited section.

[0038] Preferably, the lower half of the lower fixing screw cover is connected to the extension rod connecting seat, a third eccentric channel is opened in the extension rod connecting seat and passes through the extension rod connecting seat, the third eccentric channel is communicated with the first eccentric channel, and the extension rod connecting seat is connected to the upper half of the extension rod;

[0039] The extension rod is provided with a second hose, the upper end of which 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, the extension rod assembly base is provided with a fourth eccentric channel connected to the second hose, the lower end of the extension rod assembly base is rotatably provided with a handle base, the second eccentric channel provided in the handle base cooperates 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 communicated with the first hose, and the first hose is connected to the feeding device. The lower end surface of the roller assembly base is provided with a first assembly positioning groove, the upper end surface of the extension rod connecting seat is provided with a second assembly positioning groove, a positioning pin is provided in the second assembly positioning groove, the upper half of the positioning pin extends into the first assembly positioning groove, and the upper end of the positioning pin is a conical structure.

[0040] 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 connector and a third hose connector respectively, and the second hose connector and the third hose connector have the same structure as the first hose connector;

[0041] The inner walls of the upper and lower ends of the extension rod are respectively connected to the outer walls of the extension rod connecting seat and the extension rod assembly base in a detachable, tight-fitting taper fit. Anti-slip resistance rubber rings are respectively provided 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.

[0042] The handle base is provided with a handle anti-slip rubber sleeve, the outer wall of the handle base is provided with a protrusion, the protrusion extends along the length direction of the handle base, and the inner wall of the handle anti-slip rubber sleeve is provided with a positioning groove used in conjunction with the protrusion.

[0043] The beneficial effects of the present invention are:

[0044] 1) The present invention adopts a larger diameter roller, which effectively solves the slipping phenomenon. The hollow weight-reducing hub is provided to reduce the weight of the entire roller. Therefore, even if the operator paints for a long time, the labor intensity of the operator will not be increased due to the overall weight of the roller. At the same time, due to the volume occupied by the weight-reducing hub, the roller has less excess material and the construction waste is reduced. The present invention is particularly suitable for use in wall renovation. The large diameter roller effectively avoids the slipping phenomenon.

[0045] 2) Easy to disassemble and assemble, convenient for replacing and cleaning parts, to prevent the next painting effect from being affected by unclean cleaning, and also to extend the service life;

[0046] 3) Effectively solved the leakage problem, improved construction quality and avoided the waste of raw materials;

[0047] 4) The feeding speed can be adjusted as needed during the feeding process. When adjusting the feeding speed, the operator holds the roller assembly base and the handle base with both hands respectively, and adjusts the overlap of the first eccentric channel and the second eccentric channel by rotating the handle base, thereby adjusting the feeding speed. Regardless of whether it is during the adjustment or painting process, since the operator always holds the roller assembly base and the handle base with both hands respectively, it will not affect the stability during painting, thereby improving the painting quality. In addition, the operator can adjust it by rotating the handle base during the painting process, which is very convenient. In actual use, due to the different wall heights, an extension rod can be added according to actual needs, which is more practical.

[0048] 5) When painting, uneven feeding will not be caused by holding the feeding roller horizontally or vertically, because when the paint flows out between two adjacent weight-reducing parts, the distance between the two adjacent weight-reducing parts is small, the distance between the outer wall of the feeding tube and each weight-reducing part is small, and the paint itself has a certain viscosity, which can effectively prevent the paint from accumulating quickly in one place. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention.

[0050] Figure 2 This is a schematic diagram of a structure in which components such as a feed adjustment unit are not provided.

[0051] Figure 3 yes Figure 1 Schematic diagram of the locally enlarged structure at point A in the middle.

[0052] Figure 4 yes Figure 2 Schematic diagram of the locally enlarged structure at point B in the middle.

[0053] Figure 5 It is a structural schematic diagram of the feeding adjustment unit and other components in the present invention.

[0054] Figure 6 yes Figure 5 Schematic diagram of the partially enlarged structure at point C in the middle.

[0055] Figure 7 yes Figure 5 The partially enlarged structural diagram at point D in the middle shows that the first hose is not fully installed.

[0056] Figure 8 yes Figure 7 Schematic diagram of the structure with the first hose fully installed in place.

[0057] Figure 9 It is a schematic diagram of the upper part structure with an extension rod added.

[0058] Figure 10 It is a schematic diagram of the lower part structure with an extension rod added.

[0059] Figure 11 yes Figure 9 Schematic diagram of the locally enlarged structure at point E in the middle.

[0060] Figure 12 It is a schematic diagram of the connection structure of components such as the roller end cover and the auxiliary fastening plate.

[0061] Figure 13 This is a schematic diagram of the structure of a hollow weight-reducing hub with a hub connecting bracket provided at the front end.

[0062] Figure 14 This is a front view of the hollow weight-reducing hub.

[0063] Figure 15 It is a schematic diagram of the three-dimensional structure of the hollow weight-reducing hub.

[0064] Figure 16 It is a schematic diagram of the structure of the hub connecting bracket and other parts.

[0065] Figure 17 This is a schematic diagram of the structure of components such as the hub connecting bracket and protrusion.

[0066] Figure 18 It is a schematic diagram of the three-dimensional structure of a single weight-reducing component.

[0067] Figure 19 It is a structural schematic diagram of the present invention in which the roller end cover is provided with positioning holes.

[0068] Figure 20 It is a schematic diagram of the structure of the paint splash protection cover. DETAILED DESCRIPTION

[0069] The present invention will be further described below with reference to the accompanying drawings and examples:

[0070] In the description of the present invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0071] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0072] like Figures 1 to 20 As shown, a weight-reducing paint roller includes a feed pipe 2, a feed regulating unit 30 is provided at the rear end of the feed pipe 2, and a plurality of feed pipe openings 31 penetrating the feed pipe 2 are opened at the front half of the feed pipe 2;

[0073] The front half of the feed pipe 2 is passed through the hollow weight-reducing hub 4; the hollow weight-reducing hub 4 includes a plurality of weight-reducing parts 4a arranged in a circular array, and a through hole 4b is provided along the length direction of each weight-reducing part 4a, which passes through the weight-reducing part 4a, and each adjacent two weight-reducing parts 4a are spaced apart to form a parallel section discharge channel 4d, and the rear end of each weight-reducing part 4a is connected to the bracket column end cover 33 through the first assembly protrusion 98, and the front end of each weight-reducing part 4a is connected to the hub connecting bracket 56 through the second assembly protrusion 56c; the end face of each weight-reducing part 4a is in the shape of a petal.

[0074] The feed tube 2 is fitted with a positioning base 1, which is fitted with a first Y-shaped sealing ring 5. The bracket column end cap 33 is rotatably fitted on the first Y-shaped sealing ring 5. To facilitate replacement of the first Y-shaped sealing ring 5, the present invention provides a detachable fit on the positioning base 1. During painting, the roller cotton 37, outer cylinder 35, and bracket column end cap 33 all rotate, while the feed tube 2, positioning base 1, and first Y-shaped sealing ring 5 do not rotate.

[0075] The rear half of the bracket column end cover 33 is detachably covered with a screw cover 3, the inner wall of the screw cover 3 is rotatably engaged with the outer wall of the feed pipe 2, and the rear half of the outer cylinder 35 is sleeved on the bracket column end cover 33; the outer cylinder 35 is provided with a plurality of overflow holes 36, and the outer cylinder 35 is sleeved with a roller cotton 37;

[0076] The front end of the outer cylinder 35 is provided with a roller end cover 38, and the rear end of the roller end cover 38 is provided with a plurality of end lock spring clips 39 in a circular array. The rear end of the roller end cover 38 is provided with a plurality of auxiliary fastening plates 50 connected to the outer wall of the end lock spring clips 39, and the outer wall of each auxiliary fastening plate 50 is connected to the inner wall of the outer cylinder 35;

[0077] A supporting end 51 is provided in the outer cylinder 35, and the front half of the supporting end 51 is rotatably located in each of the end lock spring clamps 39, and the middle part of the supporting end 51 is located outside the end lock spring clamp 39 and is detachably connected to the hub connecting bracket 56; a protrusion 52 is provided at the rear end of the middle part of the supporting end 51, and the protrusion 52 is located in the hub connecting bracket 56, and the inner wall of the hub connecting bracket 56 is fitted with the outer wall of the protrusion 52 to avoid the generation of a gap between the hub connecting bracket 56 and the protrusion 52, thereby effectively solving the problem of paint being difficult to clean after entering between the hub connecting bracket 56 and the protrusion 52.

[0078] The rear end of the protrusion 52 is provided with a limiting groove 53, and the front end of the feed pipe 2 is rotatably located in the limiting groove 53. The upper end of the support end 51 is provided with a groove 51a, and the outer wall of the front half of the support end 51 is provided with a circle of clamping section 51b;

[0079] Each adjacent two end lock spring clips 39 are arranged at intervals, and the number of the auxiliary fastening plates 50 is three. The outer wall of each auxiliary fastening plate 50 is detachably connected to the inner wall of the outer cylinder 35, so that the drum end cover 38 can be easily pulled out during maintenance or cleaning.

[0080] A shield support positioning hole 38a is defined at the outer end of the roller end cover 38. A shield support column 201 is provided on the inner side of the front end of the paint splash protection cover 200. The shield support column 201 is rotatably inserted into the shield support positioning hole 38a. An elastic clamping portion 202 is provided on the outer side of the rear end of the paint splash protection cover 200. The paint splash protection cover 200 is removably clamped to the feed pipe 2 via the elastic clamping portion 202. The paint splash protection cover 200 can be effectively prevented from splashing paint due to the rapid rotation of the roller during painting.

[0081] The auxiliary fastening pieces 50 are arranged in a circular array around the centerline of the drum end cover 38. The inner walls of the end locking spring clips 39 connected to each of the auxiliary fastening pieces 50 are not provided with a snap-fit ​​portion 39a. The inner walls of the remaining end locking spring clips 39 are provided with a snap-fit ​​portion 39a that cooperates with the snap-fit ​​section 51b. The support end 51 and the drum end cover 38 are detachably and rotatably connected via the snap-fit ​​section 51b and the end locking spring clips 39. The snap-fit ​​portion 39a cooperates with the snap-fit ​​section 51b to removably connect the end locking spring clip 39 to the support end 51.

[0082] The protrusion 52 is provided with a spherical top bead 501. The inner wall of the protrusion 52 is provided with a circle of first ridges 502 with a semicircular cross-section. The front end of the feed tube 2 is provided with a rotating portion 503. The rotating portion 503 does not have a feed tube opening 31 and is located within the limiting groove 53. The rotating portion 503 and the first ridges 502 are rotatably engaged. The provision of a circle of first ridges 502 and spherical top beads 501 reduces the contact area between the inner wall of the protrusion 52 and the rotating portion 503. When the protrusion 52 rotates, the first ridges 502 and spherical top beads 501 respectively contact the side wall and end face of the rotating portion 50, reducing friction, making the rotation smoother and more labor-saving to operate.

[0083] A first sealing and fastening rubber ring 505 is sleeved between the outer wall of the drum end cover 38 and the inner wall of the outer cylinder 35;

[0084] Preferably, the first assembly protrusion 98 includes an annular positioning section 98a, the rear end of the annular positioning section 98a is connected to the bracket column end cover 33, and the front end of the annular positioning section 98a is provided with a plurality of extension sections 98b integrally formed with the annular positioning section 98a, and each of the extension sections 98b is respectively provided in a one-to-one correspondence with each of the through holes 4b, and each of the extension sections 98b is inserted into each of the through holes 4b and is detachably connected to each of the weight-reducing parts 4a by being tightly fitted with each of the through holes 4b; a second assembly protrusion 56c is tightly fitted in the front half of each of the through holes 4b; in the present invention, preferably, the first assembly protrusion 98 and the bracket column end cover 33 are an integrally formed structure.

[0085] The rear half outer wall of the bracket column end cover 33 is detachably connected to the screw cap 3 through a thread, and the middle outer wall of the bracket column end cover 33 is provided with a connecting portion 33a integrally formed with the bracket column end cover 33. The rear half outer wall of the connecting portion 33a is provided with a circle of bosses 33b. The outer tube 35 is connected to the connecting portion 33a and the bosses 33b at the same time. A second sealing and fastening rubber ring 506 is provided between the front half outer wall of the connecting portion 33a and the outer tube 35.

[0086] The size of each weight-reducing member 4a gradually increases from the inner end to the outer end. Both sides of the outer end of each weight-reducing member 4a are arc-shaped, and an outward-expanding discharge channel 4e is formed between the outer ends of each adjacent two weight-reducing members 4a.

[0087] The inner wall of the screw cover 3 is provided with a circle of second ridges 3a with a semicircular cross-section, and each second ridge 3a is rotatably engaged with the outer wall of the feeding tube 2; when the screw cover 3 rotates, the inner wall of the screw cover 3 and the feeding tube 2 generate friction. In order to reduce the friction and make it more labor-saving when painting, the present invention provides second ridges 3a on the inner wall of the screw cover 3 to reduce the contact area between the screw cover 3 and the feeding tube 2, so that the screw cover 3 rotates more smoothly.

[0088] The outer wall of the positioning base 1 is provided with a circle of card grooves 1a, and the first Y-shaped sealing ring 5 is detachably mounted in the card groove 1a. The rear end of the positioning base 1 is provided with a fitting portion 1b, and the rear end of the fitting portion 1b is rotatably fitted with the screw cover 3.

[0089] The feed pipe 2 includes an overflow section 2a, and each of the feed pipe openings 31 is arranged along the length direction of the overflow section 2a, and the diameter of each feed pipe opening 31 gradually increases from the rear end to the front end of the overflow section 2a; the rear end of the overflow section 2a is connected to the front end of the connecting section 2b, the rear end of the connecting section 2b is connected to the front end of the oblique line section 2c, and the rear end of the oblique line section 2c is connected to the front end of the tail section 2d. The overflow section 2a, connecting section 2b, oblique line section 2c and tail section 2d are interconnected and formed as one piece;

[0090] The outer wall of the hollow weight-reducing hub 4 is spaced apart from the inner wall of the outer tube 35, and the inner wall of the hollow weight-reducing hub 4 is spaced apart from the outer wall of the overflow section 2a; thus, the outer wall and inner wall of the hollow weight-reducing hub 4 are not respectively in contact with the outer tube 35 and the overflow section 2a, thereby not affecting the outflow of the coating through the overflow hole 36, thereby effectively improving the uniformity of the outflow.

[0091] The feeding regulating unit 30 includes a roller assembly base 301 connected to the tail section 2d, and a first eccentric channel 302 communicating with the feeding pipe 2 is opened in the roller assembly base 301;

[0092] The locking and anti-rotation rubber ring 305 is provided to prevent the lower fixing screw cover 303 from loosening when the handle base 306 is rotated.

[0093] The lower half of the lower fixing screw cap 303 is rotatably connected to the handle base 306. The handle base 306 is provided with a second eccentric channel 307 that penetrates the handle base 306. The second eccentric channel 307 is used in conjunction with the first eccentric channel 302.

[0094] The lower end of the handle base 306 is detachably provided with a first hose 308 communicating with the second eccentric channel 307. 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 can adopt any existing mechanism that can realize feeding the roller.

[0095] The upper half of the roller assembly base 301 is threadedly sleeved with an upper fixing screw cover 333, and a fixing assembly part 309 is arranged inside the upper fixing screw cover 333; the fixing assembly part 309 includes an integrally formed limiting portion 309a and an extending portion 309b;

[0096] The upper half of the roller assembly base 301 is provided with a discharge hole 700 communicating with the first eccentric channel 302. The extension portion 309b is located in the discharge hole 700. A second sealing ring 701 is provided between the outer wall of the extension portion 309b and the discharge hole 700.

[0097] 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 extension portion 309b; a circle of mounting groove 860 is provided at the lower end of the roller assembly base 301, and a U-shaped inner skeleton sealing ring 861 is provided in the mounting groove 860, and a lubricating friction washer 862 is provided between the handle base 306 and the lower fixing screw cover 303.

[0098] The lower end of the handle base 306 is provided with a first hose connector 90;

[0099] The first hose connector 90 includes a fixing seat 90a, the upper half of which is detachably connected to the handle base 306 by thread, a third Y-shaped sealing ring 90b is provided on the inner wall of the fixing seat 90a, and 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 is tilted upward, and the lower end of the clamping seat 90c is provided with a clamping seat limiting ring 90d connected to the fixing seat 90a. The lower end of the clamping seat limiting ring 90d is provided with a A limit seat 90e connected to the fixed seat 90a is provided. The output end of the first hose 308 is inserted into the push switch 80. The push switch 80 is slidably disposed within the clamping seat limit ring 90d and the limit seat 90e. The upper end of the push switch 80 has an inclined surface 80a for use with the clamping seat 90c. The outer wall of the middle section of the push switch 80 is provided with a limit platform 80b for use with the limit seat 90e. The lower end of the push switch 80 is provided with a limit section 80c. The lower half of the lower fixing screw cap 303 is connected to the extension rod connecting seat 310. The extension rod connecting seat 310 has a third eccentric channel 706 that runs through the extension rod connecting seat 310. The third eccentric channel 706 is connected to the first eccentric channel 302. The extension rod connecting seat 310 is connected to the upper half of the extension rod 311.

[0100] A second hose 320 is provided in the extension rod 311, and the upper end of the second hose 320 is connected to the lower end of the extension rod connecting seat 310 and is connected to the third eccentric channel 706. The lower end of the extension rod 311 is detachably provided with an extension rod assembly base 312, and a fourth eccentric channel 321 connected to the second hose 320 is provided 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, and the second eccentric channel 307 provided in the handle base 306 is used in conjunction with the fourth eccentric channel 321 and is connected to the second hose 320 through the fourth eccentric channel 321. The lower end of the second eccentric channel 307 is connected to the first hose 308, and the first hose 308 is connected to the feeding device.

[0101] The lower end surface of the roller assembly base 301 is provided with a first assembly positioning groove 301a, and the upper end surface of the extension rod connecting seat 310 is provided with a second assembly positioning groove 310a. A positioning pin 310b is provided in the second assembly positioning groove 310a, and the upper half of the positioning pin 310b extends into the first assembly positioning groove 301a. When it is necessary to connect the roller assembly base 301 with the extension rod connecting seat 310, the positioning pin 310b installed in the first assembly positioning groove 310a can be inserted into the first assembly positioning groove 310a, thereby ensuring that the first eccentric channel 302 is aligned and connected with the third eccentric channel 706, avoiding the blockage problem caused by the inability to align and connect the first eccentric channel 302 with the third eccentric channel 706 when connecting the roller assembly base 301 with the extension rod connecting seat 310, and at the same time speeding up the installation speed. Preferably, the upper end of the positioning pin 310b is a tapered structure, which makes it easier to assemble the positioning pin 310b with the second assembly positioning groove 301a.

[0102] The upper and lower ends of the second hose 320 are detachably connected to the extension rod connection seat 310 and the extension rod assembly base 312 via 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.

[0103] The inner walls of the upper and lower ends of the extension rod 311 are respectively connected to the outer walls of the extension rod connecting seat 310 and the extension rod assembly base 312 in a detachable tight-fitting taper fit, and anti-slip resistance rubber rings 900 are respectively 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 connecting seat 310; by providing the anti-slip resistance rubber rings 900, friction is enhanced and stability is improved.

[0104] The handle base 306 is fitted with a non-slip rubber sleeve 901. The outer wall of the handle base 306 is provided with a raised portion extending along the length of the handle base 306. The inner wall of the non-slip rubber sleeve 901 is provided with a positioning groove that cooperates with the raised portion. During use, paint overflows through the feed pipe opening 31 provided in the feed pipe 2. The overflowed paint is located in the parallel discharge channel 4d between two adjacent weight-reducing components 4a and moves toward the outwardly expanding discharge channel 4e. The paint then passes through the overflow hole 36 and adheres to the roller cotton 37 for painting. To adjust the discharge speed, the handle base 306 is rotated to adjust the overlap between the second eccentric channel 307 and the first eccentric channel 302.

[0105] In the present invention, the hollow weight-reducing hub 4 includes a plurality of weight-reducing parts 4a arranged in a circular array. The weight-reducing parts 4a are hollow structures, which effectively reduce the weight. The paint does not flow out through the hollow structure of the weight-reducing parts 4a, but flows out through two adjacent weight-reducing parts 4a. Since the distance between the two adjacent weight-reducing parts 4a is small, the distance between the outer wall of the feed tube 2 and each weight-reducing part 4a is small, and the paint itself has a certain viscosity, it can effectively prevent the paint from accumulating quickly in one place.

[0106] The main usage scenarios of the present invention are: it is suitable for renovation of walls that have been painted with non-water-absorbent paint. The water absorption rate is low, so it is easy to slip when brushing with a roller with a smaller diameter. Therefore, the present invention adopts a large-diameter roller, which solves the problems of uneven feeding and heavy overall weight.

[0107] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A weight-reducing paint roller, characterized by: Including feeding A feed pipe (2), a feed regulating unit (30) is provided at the rear end of the feed pipe (2), and a plurality of feed pipe openings (31) penetrating the feed pipe (2) are provided at the front half of the feed pipe (2); The front half of the feed pipe (2) is passed through the hollow weight-reducing hub (4); the hollow weight-reducing hub (4) comprises a plurality of weight-reducing parts (4a) arranged in a circular array, a through hole (4b) penetrating the weight-reducing part (4a) is provided along the length direction of each weight-reducing part (4a), and a parallel section discharge channel (4d) is formed between each adjacent two weight-reducing parts (4a), the rear end of each weight-reducing part (4a) is connected to the bracket column end cover (33) through a first assembly protrusion (98), and the front end of each weight-reducing part (4a) is connected to the hub connection bracket (56) through a second assembly protrusion (56c); The feed pipe (2) is sleeved with a positioning base (1), the positioning base (1) is sleeved with a first Y-shaped sealing ring (5), and the bracket column end cover (33) is rotatably sleeved on the first Y-shaped sealing ring (5); The rear half of the bracket column end cover (33) is detachably sleeved with a screw cover (3), the inner wall of the screw cover (3) is rotatably matched with the outer wall of the feed pipe (2), and the rear half of the outer cylinder (35) is sleeved on the bracket column end cover (33); a plurality of overflow holes (36) are opened on the outer cylinder (35), and a roller cotton (37) is sleeved on the outer cylinder (35); The front end of the outer cylinder (35) is provided with a roller end cover (38), the rear end of the roller end cover (38) is provided with a plurality of end lock spring clips (39) in a circular array, the rear end of the roller end cover (38) is provided with a plurality of auxiliary fastening pieces (50) connected to the outer wall of the end lock spring clip (39), and the outer wall of each auxiliary fastening piece (50) is connected to the inner wall of the outer cylinder (35); A supporting end (51) is provided in the outer cylinder (35), and the front half of the supporting end (51) is rotatably located in each of the end locking spring clamps (39), and the middle part of the supporting end (51) is located outside the end locking spring clamp (39) and is detachably connected to the hub connecting bracket (56); a protrusion (52) is provided at the rear end of the middle part of the supporting end (51), and the protrusion (52) is located in the hub connecting bracket (56), and the inner wall of the hub connecting bracket (56) is in contact with the outer wall of the protrusion (52), and a limiting groove (53) is provided at the rear end of the protrusion (52), and the front end of the feeding pipe (2) is rotatably located in the limiting groove (53).

2. The weight-reducing paint roller according to claim 1, wherein: A groove (51a) is provided at the upper end of the support end (51), and a circle of clamping sections (51b) is provided on the outer wall of the front half of the support end (51); Each adjacent two end locking spring clips (39) are arranged at intervals, the number of the auxiliary fastening pieces (50) is three, and each of the auxiliary fastening pieces (50) is arranged in a circular array around the center line of the roller end cover (38). The inner walls of the end locking spring clips (39) connected to each of the auxiliary fastening pieces (50) are not provided with a clamping portion (39a), and the inner walls of the remaining end locking spring clips (39) are provided with a clamping portion (39a) used in conjunction with the clamping section (51b). The support end (51) and the roller end cover (38) are detachably connected to each other through the clamping section (51b) and the end locking spring clip (39). A shield support positioning hole (38a) is provided at the outer end of the roller end cover (38); a shield support column (201) is provided on the inner side of the front end of the paint splash protection cover (200); the shield support column (201) is rotatably inserted into the shield support positioning hole (38a); an elastic clamping portion (202) is provided on the outer side of the rear end of the paint splash protection cover (200); the paint splash protection cover (200) is detachably clamped on the feed pipe (2) via the elastic clamping portion (202).

3. The weight-reducing paint roller according to claim 1, wherein: A spherical top bead (501) is provided in the protruding portion (52), and a circle of first ridges (502) with a semicircular cross section is provided on the inner wall of the protruding portion (52). A rotating portion (503) is provided at the front end of the feeding tube (2). The feeding tube opening (31) is not provided on the rotating portion (503), and the rotating portion (503) is located in the limiting groove (53). The rotating portion (503) and the first ridge (502) are rotatably matched.

4. The weight-reducing paint roller according to claim 1, wherein: A first sealing and fastening rubber ring (505) is sleeved between the outer wall of the roller end cover (38) and the inner wall of the outer cylinder (35); The first assembly protrusion (98) includes an annular positioning section (98a), the rear end of the annular positioning section (98a) is connected to the bracket column end cover (33), and the front end of the annular positioning section (98a) is provided with a plurality of extension sections (98b) integrally formed with the annular positioning section (98a), each of the extension sections (98b) is respectively provided in a one-to-one correspondence with each of the through holes (4b), each of the extension sections (98b) is inserted into each of the through holes (4b), and is detachably connected to each of the weight-reducing parts (4a) by being tightly fitted with each of the through holes (4b); a second assembly protrusion (56c) is tightly fitted in the front half of each of the through holes (4b); The rear half outer wall of the bracket column end cover (33) is detachably connected to the screw cover (3) through a thread, the middle outer wall of the bracket column end cover (33) is provided with a connecting portion (33a) integrally formed with the bracket column end cover (33), the rear half outer wall of the connecting portion (33a) is provided with a circle of bosses (33b), the outer cylinder (35) is simultaneously connected to the connecting portion (33a) and the bosses (33b), and a second sealing and fastening rubber ring (506) is provided between the front half outer wall of the connecting portion (33a) and the outer cylinder (35); The size of each weight-reducing member (4a) gradually increases from the inner end to the outer end, both sides of the outer end of each weight-reducing member (4a) are arc-shaped, and an outward-expanding discharge channel (4e) is formed between the outer ends of each two adjacent weight-reducing members (4a).

5. The weight-reducing paint roller according to claim 4, wherein: The inner wall of the screw cover (3) is provided with a circle of second ridges (3a) with a semicircular cross section, and each of the second ridges (3a) is rotatably engaged with the outer wall of the feed pipe (2); The outer wall of the positioning base (1) is provided with a circle of card grooves (1a), the first Y-shaped sealing ring (5) is detachably sleeved in the card groove (1a), and the rear end of the positioning base (1) is provided with a fitting portion (1b), and the rear end of the fitting portion (1b) is rotatably fitted with the screw cover (3).

6. The weight-reducing paint roller according to any one of claims 1 to 5, characterized in that: The feed pipe (2) includes an overflow section (2a), each of the feed pipe openings (31) is arranged along the length direction of the overflow section (2a), and the diameter of each feed pipe opening (31) gradually increases from the rear end to the front end of the overflow section (2a); the rear end of the overflow section (2a) is connected to the front end of the connecting section (2b), the rear end of the connecting section (2b) is connected to the front end of the oblique line section (2c), the rear end of the oblique line section (2c) is connected to the front end of the tail section (2d), and the overflow section (2a), the connecting section (2b), the oblique line section (2c) and the tail section (2d) are interconnected and integrally formed; The outer wall of the hollow weight-reducing hub (4) is spaced apart from the inner wall of the outer cylinder (35), and the inner wall of the hollow weight-reducing hub (4) is spaced apart from the outer wall of the overflow section (2a); The feed regulating unit (30) comprises a roller assembly base (301) connected to the tail section (2d), and a first eccentric channel (302) communicating with the feed pipe (2) is provided in the roller assembly base (301); The outer wall of the lower half of the roller assembly base (301) is threadedly connected to the inner wall of the upper half of the lower fixed screw cover (303), and a locking anti-rotation rubber ring (305) is provided between the lower fixed screw cover (303) and the roller assembly base (301); The lower half of the lower fixed screw cover (303) is rotatably connected to the handle base (306), and a second eccentric channel (307) is provided in the handle base (306) and passes through the handle base (306). The second eccentric channel (307) is used in conjunction 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.

7. The weight-reducing paint roller according to claim 6, wherein: An upper fixing screw cover (333) is provided on the upper half of the roller assembly base (301) through a threaded sleeve, and a fixing assembly part (309) is provided inside the upper fixing screw cover (333); the fixing assembly part (309) includes an integrally formed limiting portion (309a) and an extending portion (309b); The upper half of the roller assembly base (301) is provided with a discharge hole (700) communicating with the first eccentric channel (302); the extension portion (309b) is located in the discharge hole (700); and a second sealing ring (701) is provided between the outer wall of the extension portion (309b) and the discharge hole (700); 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); A circle of mounting grooves (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 mounting groove (860), and a lubricating friction washer (862) is provided between the handle base (306) and the lower fixed screw cover (303).

8. The weight-reduced paint roller according to claim 6, wherein: A first hose connector (90) is provided at the lower end of the handle base (306); The first hose connector (90) includes a fixed seat (90a), the upper half of the fixed seat (90a) is detachably connected to the handle base (306) by thread, the inner wall of the fixed seat (90a) is provided with a third Y-shaped sealing ring (90b), the lower half of the fixed seat (90a) is provided with a clamping seat (90c) made of a deformable material, the inner wall of the clamping seat (90c) is tilted upward, the lower end of the clamping seat (90c) is provided with a clamping seat limiting ring (90d) connected to the fixed seat (90a), and the lower end of the clamping seat limiting ring (90d) is provided with A limit seat (90e) is connected to the fixed seat (90a), 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 limit ring (90d) and the limit seat (90e), the upper end of the push switch (80) has an inclined surface (80a) used in conjunction with the clamping seat (90c), the outer wall of the middle section of the push switch (80) is provided with a limit platform (80b) used in conjunction with the limit seat (90e), and the lower end of the push switch (80) is provided with a limit section (80c).

9. The weight-reduced paint roller according to claim 8, wherein: The lower half of the lower fixed screw cap (303) is connected to the extension rod connecting seat (310), and a third eccentric channel (706) is provided in the extension rod connecting seat (310) and passes through the extension rod connecting seat (310). The third eccentric channel (706) is communicated with the first eccentric channel (302), and the extension rod connecting seat (310) is connected to the upper half of the extension rod (311); A second hose (320) is provided 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), the extension rod assembly base (312) is provided with a fourth eccentric channel (321) communicated with the second hose (320), the lower end of the extension rod assembly base (312) is rotatably provided with a handle base (306), the second eccentric channel (307) provided in the handle base (306) is used in conjunction with the fourth eccentric channel (321), The roller assembly base (301) is connected to the second hose (320) through the fourth eccentric channel (321), and the lower end of the second eccentric channel (307) is connected to the first hose (308), and the first hose (308) is connected to the feeding device; the lower end surface of the roller assembly base (301) is provided with a first assembly positioning groove (301a), and the upper end surface of the extension rod connecting seat (310) is provided with a second assembly positioning groove (310a), and a positioning pin (310b) is provided in the second assembly positioning groove (310a), and the upper half of the positioning pin (310b) extends into the first assembly positioning groove (301a); the upper end of the positioning pin (310b) is a conical structure.

10. The weight-reduced paint roller according to claim 9, wherein: The upper and lower ends of the second hose (320) are detachably connected to the extension rod connection seat (310) and the extension rod assembly base (312) via 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 respectively connected to the outer walls of the extension rod connecting seat (310) and the extension rod assembly base (312) in a detachable, tight-fitting taper fit. Anti-slip resistance rubber rings (900) are respectively 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 connecting seat (310). The handle base (306) is provided with a handle anti-slip rubber sleeve (901), the outer wall of the handle base (306) is provided with a protrusion, and the protrusion extends along the length direction of the handle base (306), and the inner wall of the handle anti-slip rubber sleeve (901) is provided with a positioning groove used in conjunction with the protrusion.

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