Coupling attachment for use of polishing block in conjunction with extension rod

Abstract

A coupling attachment for use of a grinding block with an extension rod, which can be used as a coupling device for fixing at least one grinding block (2) to a connector (30) at the end of an extension rod (3). The coupling attachment comprises a member comprising: a lower assembly area (11) shaped and dimensioned to be inserted into an opening of a connector (30) of an extension rod (3); and an upper supporting area (10), the upper supporting area (10) is provided with a flat rectangular surface (101), a plurality of perforated protrusions (103) protrude on the flat rectangular surface (101), and when the grinding block (2) is placed on the surface (101) and pressed, the protrusions can be driven into the grinding block (2). Furthermore, projecting walls (102) are provided on two opposite sides of the flat rectangular surface (101), forming the form of a gripper jaw. The surface (101) is spatially dimensioned in such a way that at least one grinding block (2) can be accommodated and fixed in a pressure-fit manner.

Description

[0001] Purpose of the invention As described in this specification, the present invention relates to a coupling accessory for connecting a grinding block to an extension rod, the specific advantages and features of which will be described in detail below.

[0002] The purpose of this invention is to provide a practical accessory that serves as a specially designed coupling medium, enabling the attachment of a sanding block to a connector at the end of an extension rod, particularly commercially available paint brush extension rods, to perform manual sanding work on surfaces far from the user's location (such as high on a ceiling or wall), thereby allowing comfortable access to these areas without having to climb stairs or scaffolding, as is the effect produced when using the rod for brush or roller painting. Technical Field

[0003] The scope of this invention belongs to the industrial field dedicated to the manufacture of work tools, with a particular focus on the field of coupling accessories, and more specifically, coupling accessories for grinding work. Background Technology

[0004] As is well known, after applying putty to repair cracks, dents, or damage on surfaces such as walls, ceilings, or metal and wood, sanding is usually required before painting or finishing to make the surface smooth.

[0005] Therefore, among other options such as using a sander or sandpaper, one of the most common choices for professionals in this field, especially in the preparation of interior surfaces such as walls and ceilings where hand sanding is preferred, is sanding blocks.

[0006] A sanding block is a hand tool, usually made of wood or plastic, and is shaped like a parallelepiped, rectangle, or square, with its surface covered with sandpaper or abrasive cloth. The main advantage of this tool is that it provides a stable and sturdy support, thus better securing the sandpaper.

[0007] Therefore, the purpose of this invention is to address the inconveniences of the prior art: when using a sanding block, it must always be held directly by hand. Therefore, when sanding surfaces such as ceilings or high walls, stairs or scaffolding must be used, which not only increases the difficulty of the work for professionals, but also increases the risk of accidents due to falls.

[0008] To address this, an accessory was developed specifically designed for use with a painter's extension rod. Painter's extension rods are common tools in this field, typically consisting of two or more telescopic sections. One end of the extension rod has a gripping handle, while the other end features a hollow connector suitable for attaching to the handle of a roller or brush via an adjusting screw.

[0009] Furthermore, as a reference to the current level of technology, it should be noted that, at least to the applicant's knowledge, there are currently no other grinding block attachments or any other similar applications that are identical or similar to those claimed in this application in terms of technical characteristics, structure, and composition. Summary of the Invention

[0010] The coupling accessory proposed in this invention for using a grinding block with an extension rod is configured as the optimal solution to achieve the aforementioned objectives, which in turn represents an improvement over the current level of technology. Its specific features, distinguishing it from the prior art, are properly included in the claims accompanying this specification.

[0011] Specifically, as noted above, the present invention proposes a practical accessory that serves as a specially designed element and connection medium for attaching a sanding block to a connector on the end of a painter's extension rod, which is typically used to attach rollers or brushes, to perform manual sanding work on surfaces far from the user's location (such as high on a ceiling or wall), thereby allowing comfortable access to these areas without having to climb stairs or scaffolding.

[0012] Therefore, more specifically, the attachment of the present invention is mainly configured with a component comprising an upper support region and a lower assembly region. The upper support region is provided with means for securing at least one sanding block, allowing the sanding block to be easily installed onto or removed from the coupling attachment, preferably by pressure adjustment. The shape and size of the lower assembly region are adapted to insert into the hollow connector of a conventional painter's extension rod, allowing the sanding block to mate with the extension rod.

[0013] Therefore, in a preferred embodiment, the upper support area is defined by a flat rectangular surface, with clamping claw-shaped partitions on the shorter sides of the flat rectangular surface. These partitions are sized to accommodate and allow for the pressure-fixing of grinding blocks of a specific shape and size (which may be standardized), and do not preclude the possibility of fixing up to two grinding blocks located on the same plane on the clamping claws.

[0014] Accordingly, in a preferred embodiment, the flat surface also has a plurality of perforated protrusions that, when the grinding block is placed on the surface, will pin the grinding block in place, thereby increasing the holding performance of the gripper diaphragm.

[0015] On the other hand, the lower assembly area is defined by a cylindrical portion whose diameter is determined by the size of the gap of the connector of the extension rod to be used, which is usually standardized.

[0016] In addition, to facilitate the use of the grinding block and the extension rod, the flat surface of the upper support area of ​​the accessory is inclined toward the axis of the cylindrical portion of the lower assembly area, which is consistent with the axis of the rod, and the angle is preferably between 25 and 50 degrees.

[0017] Furthermore, in an alternative construction mode, the inclination of the flat surface is adjustable. For this purpose, the upper support area and the lower assembly area are preferably two separate parts connected by a hinge joint.

[0018] Finally, in other embodiment options, the accessory includes one or more additional elements coupled to the upper support region, for example: - A stabilizing element, consisting of wheels supported by flexible elements, that supports the work surface to minimize the amount of work required for grinding; and / or - A light directed towards the work surface to detect uneven areas that need to be sanded; and / or - Scraper / scraper, used to remove thicker bumps or uneven areas. Attached Figure Description

[0019] To supplement the existing description and to aid in a better understanding of the features of the invention, a plan view is included as part of this specification, illustrating the following in an illustrative and non-limiting manner: Figure 1 This is a front perspective perspective view of an embodiment, showing an attachment for use with a grinding block and an extension rod as intended by the present invention. The figure also shows an example of a grinding block to which it is applicable and depicts the various parts and elements included in the attachment. Figure 2 It shows Figure 1 The figure shown is a side perspective view of an example of the appendix of the present invention, showing the state after the grinding block has been installed.

[0020] Figure 3 A side elevation view of the accessory of the present invention next to the extension rod coupled thereto is shown, with arrows indicating how it is inserted into the hollow connector of the present invention; Figure 4 An elevation view of the present invention after the accessory is installed on the extension rod is shown, and... Figure 5 The diagram shows an elevation view of the invention's accessories mounted on an extension rod with several optional components, such as an adjustable hinge joint for flat surface angles, stabilizing elements, a light for detecting unevenness, and a scraper for eliminating thicker bumps or unevenness. Detailed Implementation

[0021] Based on the foregoing figures and according to the numbers used, a non-limiting embodiment of an attachment for mates a grinding block with an extension rod can be seen, which includes the following detailed description.

[0022] Therefore, as shown in these figures, the annex (1) of the present invention serves as a coupling device for ensuring that at least one grinding block (2) is attached to the connector (30) at the end of the extension rod (3), and essentially comprises a component. This component further comprises an upper support region (10) and a lower assembly region (11), the upper support region (10) being equipped with means for attaching at least one grinding block (2) in an easily detachable manner, and the lower assembly region (11) being shaped and sized to be inserted into the gap of the connector (30) of the extension rod (3).

[0023] Preferably, the upper support area (10) has a flat rectangular surface (101) with two partitions (102) on its two opposite sides, the partitions being in the form of clamping claws; the spatial dimensions of the surface (101) are designed to accommodate at least one grinding block (2) of a standardized shape and size for intended use, and can accommodate and fix up to two grinding blocks (2) by adjusting and pressure regulation.

[0024] Optionally, the flat rectangular surface (101) of the upper support area (10) is also provided with a plurality of perforated protrusions (103) that protrude from the surface so that they can be pinned into the grinding block (2) when the grinding block (2) is placed and pressed on the surface (101), thereby increasing the fixing performance of the clamping claw partition (102).

[0025] On the other hand, the lower assembly area (11) is defined by a cylindrical part (110), the diameter of which is determined by the size of the gap of the connector (30) of the extension rod (3) to be used, and this size can be standardized.

[0026] In any case, preferably, the flat surface (101) of the upper support region (10) is inclined toward the axis of the cylindrical portion (110) of the lower assembly region (11), and the angle (a) of this inclination is preferably between 25 and 50º, with 35º being more preferred.

[0027] according to Figure 5 As can be seen, in an alternative embodiment, the tilt angle (a) of the flat surface (10) is adjustable. For this purpose, preferably, the upper support area (10) and the lower assembly area (11) are two separate parts of the component, which are connected by a hinge joint (12).

[0028] Finally, Figure 5As can be seen, optionally, the accessory (1) may also include one or more additional elements coupled to the support area (10), such as a stabilizing element (13) and / or a lamp (14) and / or a scraper (15), the stabilizing element (13) being used to support the working surface, the lamp (14) being used to detect irregularities, and the scraper (15) being used to remove thicker bumps or irregularities.

[0029] Preferably, the stabilizing element (13) includes a wheel (130) which is connected to the support area (10) via a flexible member (131).

[0030] Having fully described the features of the invention and the methods of its practical application, it is assumed that no further explanation is necessary so that any expert in the field can understand its scope and the advantages therefrom.

Claims

1. A coupling accessory for mates a grinding block with an extension rod, the coupling accessory serving as a coupling medium to ensure that at least one grinding block (2) is held in a connector (30) at the end of the extension rod (3), the coupling accessory comprising a component including: An upper support region (10) has a flat rectangular surface (101) with two partitions (102) on opposite sides of the flat rectangular surface (101). The two partitions (102) are in the form of clamping claws. The spatial dimensions of the flat rectangular surface (101) are designed to accommodate at least one grinding block (2) by adjusting and pressure regulation. The lower assembly area (11) is shaped and sized to be inserted into the gap of the connector (30) of the extension rod (3). The feature is that the flat rectangular surface (101) of the upper support region (10) has a plurality of protruding perforated protrusions (103) such that when the polishing block (2) is placed and pressed on the flat rectangular surface (101), the perforated protrusions (103) can be driven into the polishing block (2).

2. The coupling accessory according to claim 1, characterized in that, The coupling accessory also includes a scraper (15).

3. The coupling accessory according to any one of the preceding claims, characterized in that, The coupling accessory also includes a lamp (14).

4. The coupling accessory according to any one of the preceding claims, characterized in that, The lower assembly area (11) is defined by a cylindrical portion (110), the diameter of which is determined according to the size of the gap presented by the connector (30) of the extension rod (3).

5. The coupling accessory according to any one of the preceding claims, characterized in that, The flat rectangular surface (101) of the upper support region (10) is inclined toward the axis of the cylindrical portion (110) of the lower assembly region (11), wherein the inclination angle (a) is between 25 and 50º.

6. The coupling accessory according to any one of the preceding claims, characterized in that, The angle (a) of the flat rectangular surface (10) is adjustable.

7. The coupling accessory according to any one of the preceding claims, characterized in that, The coupling accessory also includes a stabilizing element (13), which serves as a support on the working surface.

8. The coupling accessory according to claim 7, characterized in that, The stabilizing element is formed by connecting an additional roller (130) to the upper support region (10) using a flexible member (131).

Images