attachment

Abstract

Use the sander alone or with attachments depending on the object being sanded. [Solution] The attachment 100 according to the present invention is attached to an orbital sander 10 for polishing the surface SF1 of a structure ST and comprises a first plate portion 111 having a first surface 113 and attached to the sanding pad 12 of the orbital sander 10, a second plate portion 112 having a second surface 114 to which sandpaper 20 is attached and extending perpendicularly from the first plate portion 111, a first mounting member 130 provided on the first surface 113 for detachably attaching the first plate portion 111 to the sanding pad 12, and a second mounting member 150 provided on the second surface 114 for attaching the sandpaper 20 to the second surface 114.

Description

Technical Field

[0001] The present invention relates to an attachment to be attached to a sander.

Background Art

[0002] Conventionally, a sander has been widely used as a tool for polishing the surfaces of various materials such as wood, metal, and plastic to finish them smoothly. This type of sander is used to smooth the surface by removing irregularities, burrs, dirt, or old paint films formed on the surface of the material, and plays an important role as a pretreatment (so-called base treatment) before painting, adhesion, and assembly. Furthermore, a sander is also used as a means for cleaning and regenerating the surfaces of buildings and fixtures soiled by aging, wind and rain, ultraviolet rays, etc. For example, it is also applied to the removal of dirt adhering to outdoor wooden building materials and interior members, deteriorated paint films, etc. Thus, sanders are used in a wide variety of fields such as construction sites, furniture manufacturing, interior construction, automobile repair, and DIY, and various forms are provided, such as rotary, vibrating, belt-type, or those having a triangular tip, according to the application. In addition, attachments and dedicated pads have been developed so that they can also be applied to parts where it is difficult to insert a sander, such as gaps between woods in a structural part.

[0003] Regarding the above attachment, Patent Document 1 describes an attachment in which a hook-shaped engaging element that engages with the back surface of sandpaper is integrally formed. The sander described in Patent Document 1 improves the efficiency of the sandpaper attachment work by providing the attachment, and realizes cost reduction of the surface fastener used for attaching the sandpaper.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

[0005] The sander described in Patent Document 1 above has a mounting structure for attaching an attachment formed on the pad surface of the sander body, and the attachment and the sander body are used as a pair of devices. For this reason, it was difficult to use the sander alone or with the attachment attached depending on the object to be polished. [Means for solving the problem]

[0006] To solve the above problems, the present invention provides an attachment to a sander for polishing the surface of a structure, comprising: a plate-shaped mounting portion having a first surface and attached to the sanding pad of the sander; a plate-shaped extension portion having a second surface to which sandpaper is attached and extending perpendicularly from the mounting portion; and a first mounting member provided on the first surface for attaching the mounting portion to the sanding pad. [Effects of the Invention]

[0007] The attachment of the present invention can be used either by using the sander alone or with the attachment attached, depending on the object to be polished. [Brief explanation of the drawing]

[0008] [Figure 1] A diagram showing how to mount an attachment according to the first embodiment of the present invention. [Figure 2] A diagram showing an example of the object to be polished in the first embodiment. [Figure 3] (a) Side view of the attachment, (b) Cross-sectional view AA of the attachment, (c) Cross-sectional view showing a modified version of the attachment, (d) Cross-sectional view showing another modified version of the attachment, (e) Cross-sectional view showing yet another modified version of the attachment. [Figure 4](a) Front view showing the attachment and orbital sander, (b) Front view showing the polishing process [Figure 5] (a) Front view of an attachment according to a second embodiment of the present invention, (b) Front view showing a modified example of the attachment. [Figure 6] (a) Front view of an attachment according to a third embodiment of the present invention, (b) Front view showing the polishing method [Figure 7] Side view of an attachment according to a modified example of the present invention [Modes for carrying out the invention]

[0009] [First Embodiment]

[0010] Hereinafter, an attachment according to the first embodiment of the present invention will be described with reference to Figures 1 to 4.

[0011] The attachment 100 according to this embodiment is attached to and detached from an orbital sander 10, which is a type of sander. This orbital sander 10 is an electric power tool equipped with an eccentric mechanism and is used to polish the surface of structures. The orbital sander 10 is equipped with an electric motor (not shown) located inside the housing 11, a rotating shaft (not shown) that rotates driven by the electric motor, and an eccentric mechanism (not shown) connected to the rotating shaft in an eccentric state, and is configured so that a rectangular sanding pad 12 moves eccentrically via the eccentric mechanism. The surface of the sanding pad 12 (hereinafter referred to as the "pad surface") is formed flat, and hook-shaped protrusions used in hook-and-loop fasteners are formed on its entire surface. Furthermore, the sanding pad 12 is provided with a plurality of dust collection holes, and can be connected to a dust collection mechanism that sucks up dust generated during sanding work through these dust collection holes. An operating grip 11a and a power switch are provided on the outside of the housing 11. A speed controller that can adjust the rotation speed and eccentricity may also be provided. Power can be supplied via an external power cord or by a rechargeable battery.

[0012] The structures mentioned above typically include large structures such as houses, temples and shrines, and bridges, which are used for long periods of time while undergoing maintenance such as the removal of dirt and grime, as well as relatively small and movable structures such as ships, furniture, and portable shrines. These structures accumulate dirt on their surfaces due to prolonged exposure to dust, wind and rain, ultraviolet rays, mold, and other sources of contamination. The Orbital Sander 10 removes the dirt accumulated on the surface of these structures by polishing them. This dirt includes deteriorated paint films, stickers, graffiti, etc.

[0013] However, there are also structures in which gaps are formed that the orbital sander 10 cannot enter. For example, the structure ST shown in Figure 2 comprises a plurality of members P1 arranged with gaps between them, and a connecting member P2 that connects the plurality of members. The plurality of members P1 comprises a flat surface SF1 located on the front side of the structure ST and a side surface SF2 which is the edge of the wood. The connecting member P2 also has an exposed surface SF3 that is exposed to the gap. The surface SF1 of the structure ST can be polished with the orbital sander 10 alone, but the side surface SF2 cannot be polished with the orbital sander 10 alone. The attachment 100 according to this embodiment is used to polish such a side surface SF2 (the surface SF2 facing the gap) and remove the dirt accumulated on the side surface SF2.

[0014] The attachment 100 according to this embodiment includes an L-shaped body 110, a first mounting member 130 for attaching the L-shaped body 110 to the sanding pad 12 of the orbital sander 10, and a second mounting member 150 for attaching the sandpaper 20 to the L-shaped body 110.

[0015] The L-shaped body 110 is a metal structure formed in an L-shape in cross-section and extending in the longitudinal direction of the sanding pad 12, comprising a first plate portion 111 and a second plate portion 112. The L-shaped body 110 is not limited to metal; it may be made of wood, bamboo, or resin. In the following description, the inferior angle side of the L-shaped body 110 is referred to as the inner surface, and the superior angle side is referred to as the outer surface.

[0016] The first plate portion 111 functions as a mounting portion attached to the sanding pad 12. The first plate portion 111 is formed in a strip shape extending in the longitudinal direction of the sanding pad 12 and is sized to fit on the pad surface of the sanding pad 12. Specifically, in this embodiment, the longitudinal dimension of the pad surface of the sanding pad 12 is 105 mm, while the longitudinal dimension of the first plate portion 111 is 100 mm. The width dimension of the pad surface of the sanding pad 12 is 75 mm, while the width dimension of the first plate portion 111 is 50 mm. The thickness of the first plate portion 111 is 1 mm. Note that the longitudinal dimension, width dimension, and thickness of the first plate portion 111 are examples, and they may be larger or smaller than these dimensions. A first mounting member 130 is provided on the first surface 113 of the first plate portion 111. The first surface 113 of the first plate portion 111 is the surface that is positioned opposite the pad surface of the sanding pad 12, and in this embodiment, it is the outer surface (the top surface in Figure 3(b)).

[0017] The second plate portion 112 functions as an extension portion extending from the longitudinal edge portion of the first plate portion 111 so as to be perpendicular to the first plate portion 111. Similar to the first plate portion 111, the second plate portion 112 is formed in a strip shape, has a longitudinal dimension of 100 mm, and a width dimension of 50 mm. Also, the thickness of the second plate portion 112 is formed to be 1 mm. Note that the longitudinal dimension, width dimension, and thickness of the second plate portion 112 are examples, and they may be larger or smaller than these dimensions. A second attachment member 150 is provided on the second surface 114 of the second plate portion. Note that the second surface 114 of the second plate portion 112 is a surface that extends perpendicular to the pad surface of the sanding pad 12, and in the present embodiment, it is the inner surface (the left surface in FIG. 3(b)).

[0018] The first attachment member 130 is a member for attaching the first plate portion 111 to the sanding pad 12. Here, hooks used for a surface fastener are formed on the surface of the sanding pad 12 of the present embodiment, and the first attachment member 130 uses a surface fastener with loops formed thereon. The back surface of the surface fastener is fixed to the outer surface of the first plate portion 111 with an adhesive or a double-sided tape.

[0019] The second attachment member 150 is a member for attaching the sandpaper 20 to the second plate portion 112. Here, loops used for a surface fastener are formed on the back surface of the sandpaper 20 of the present embodiment, and the second attachment member 150 uses a surface fastener with hooks formed thereon. The back surface of the surface fastener is fixed to the inner surface of the second plate portion 112 with an adhesive or a double-sided tape.

[0020] As shown in FIG. 4, sandpaper 20 is attached to the attachment 100 configured as described above. And the attachment 100 is attached to the orbital sander 10. The attachment 100 attached to the orbital sander 10 is arranged such that its first plate portion 111 extends along the sanding pad 12, and the second plate portion 112 is arranged to protrude downward from the sanding pad 12. Then, the second plate portion 112 is inserted into the gap G between the members P1, and the sandpaper 20 is applied to the side surface SF2 to be polished. Thereby, the side surface SF2 facing the gap G can be polished efficiently in the same manner as the other surface SF1.

[0021] As described above, the attachment 100 according to the present embodiment can polish the side surface SF2 of the member (for example, the end of the wood constituting the structure ST) facing the gap G of the structure ST. In this polishing operation, the polishing operation can be performed while the first plate portion 111 is in contact with the upper surface SF1 of the member P1. Thereby, since the posture of the attachment 100 is stabilized, the side surface SF2 of the member P1 can be polished without damaging the corners of the member P1 to be polished. And the attachment 100 can be removed from the orbital sander 10. Therefore, when polishing the surface SF1 other than the gap G, the sandpaper 20 can be attached to the sanding pad 12 of the orbital sander 10 as before, and the surface SF1 can be polished. Thus, the attachment 100 according to the present embodiment can be attached to and detached from the existing orbital sander 10, and depending on the polishing site, polishing can be selectively performed using only the orbital sander 10 or using the attachment 100.

[0022] [Second Embodiment]

[0023] As shown in Figure 5, the attachment 200 according to the second embodiment differs from the attachment 100 according to the first embodiment in its shape and other characteristics. The attachment 200 of this embodiment is a metal structure with a T-shaped cross-section that extends along the longitudinal direction of the sanding pad 12. The attachment 200 comprises a T-shaped body 210, a first mounting member 130, and a second mounting member 150.

[0024] The T-shape 210 of this embodiment is formed by joining two L-shapes 110. Specifically, the T-shape 210 is formed by arranging each first plate portion 111 on the same plane and joining the outer surfaces 115 of each second plate portion 112. In such a T-shape 210, a first mounting member 130 is provided on the outer surface (top surface in Figure 5), which is the first surface 113 of each first plate portion 111, and sandpaper 20 is provided on the inner surface (left and right sides in Figure 5), which is the second surface 114 of each second plate portion 112, via a second mounting member 150. When the attachment 200 is attached to the sanding pad 12, each first plate portion 111 is positioned to extend along the pad surface of the sanding pad 12, and each second plate portion 112 is positioned to protrude downward from the pad surface.

[0025] The attachment 200 according to this embodiment, like the attachment 100 according to the first embodiment, can polish the side surface SF2 (for example, the end grain of wood constituting the structure ST) of a member P1 facing a gap G (Figure 2) in a structure ST. In this polishing operation, the polishing operation can be performed while aligning one L-shaped body 110 and / or the first plate portion 111 of the other L-shaped body with the upper surface SF1 (Figure 2) of the member P1. This stabilizes the posture of the attachment 200, allowing the side surface SF2 of the member P1 to be polished without damaging the corners of the P1 to be polished. The attachment 200 can then be removed from the orbital sander 10. Thus, the attachment 200 according to this embodiment can be attached to and detached from an existing orbital sander 10, and polishing can be performed using either the orbital sander 10 alone or the attachment 200 depending on the area to be polished.

[0026] [Third Embodiment]

[0027] As shown in Figure 6, the attachment 300 according to the third embodiment differs from the attachment 100 according to the first embodiment in its mounting configuration and other aspects. The attachment 300 in this embodiment comprises two L-shaped bodies 110, a first mounting member 130 for attaching each L-shaped body 110 to the sanding pad 12 of the orbital sander 10, and a second mounting member 150 for attaching sandpaper 20 to the L-shaped bodies 110.

[0028] The L-shaped structure 110 is a metal structure with an L-shaped cross-section that extends along the longitudinal direction of the sanding pad 12. A first mounting member 130 is provided on the first surface 113 of the first plate portion 111 that constitutes the L-shaped structure 110, and a second mounting member 150 is provided on the second surface 114 of the second plate portion 112. Here, the first surface 113 is the surface that is positioned opposite the pad surface of the sanding pad 12, and in this embodiment, it is the inner surface. The second surface 114 is the surface that extends perpendicularly to the pad surface of the sanding pad 12, and in this embodiment, it is the outer surface.

[0029] When the attachment 300 is attached to the sanding pad 12, the attachment 300 is positioned so that each of its first plate portions 111 extends along the pad surface of the sanding pad 12, and the second plate portion 112 protrudes upward from both sides of the sanding pad 12. Each of the sandpapers 20 attached to the second plate portion 112 is positioned to face laterally. One or both of the sandpapers 20 are then applied to the side surface SF4 of the rising portion (the portion extending perpendicularly from the base surface) of the structure ST2, which is the part to be sanded. This allows for efficient sanding of the side surface SF4 of the rising portion. In this sanding operation, the first plate portion 111 can be guided along the surface SF5 of the structure SF2 while sanding. Therefore, the posture of the attachment 300 is stable, allowing for sanding of the side surface SF4 of the structure ST2 without damaging the corners of the structure ST2. Furthermore, the attachment 300 according to this embodiment can be attached to and detached from an existing orbital sander 10, and depending on the area to be sanded, users can choose between sanding with the orbital sander 10 alone and sanding with the attachment 300.

[0030] As described above, attachments 100, 200, and 300 according to embodiments of the present invention have been explained. However, the attachments according to the present invention are not limited to attachments 100, 200, and 300 according to the above embodiments, and may be modified as follows.

[0031] [Variation 1-1] In the first embodiment, the second surface 114 to which the second mounting member 150 is attached may be the outer surface of the second plate portion 112, as shown in Figure 3(c). [Variation 1-2] As shown in Figure 3(d), the attachment may have a second mounting member 150 attached to both the inner surface (second surface 114) and the outer surface (third surface 115) of the second plate portion 112, and the sandpaper 20 may be attached via the second mounting member 150. This attachment can efficiently sand the side surface SF2 of the member S facing the gap G of the structure ST (for example, the end of the wood of member P1, etc.) without changing the direction of the orbital sander 10. [Modification 1-3] As shown in Figure 3(e), the attachment may be configured such that the second mounting member 150 is attached to both the inner surface (second surface 114) and the outer surface (third surface 115) of the second plate portion 112, and the second mounting member 150 is also attached to the inner surface (fourth surface 116) of the first plate portion 111, with the sandpaper 20 attached via these second mounting members 150. This attachment can simultaneously polish not only the side surface SF2 of the member P1 facing the gap G of the structure ST (for example, the end of the member P1), but also the upper edge surface SF1 of the member P1.

[0032] [Variation 2-1] In the second embodiment, the attachment 400 may be the one shown in Figure 5(b). The T-shape 410 of the attachment 400 comprises a rectangular first plate portion 411 and a second plate portion 412 extending from the center of the first plate portion 411. The longitudinal and width dimensions of the first plate portion 411 are formed to be approximately the same size as, or slightly smaller than, the pad surface of the sanding pad 12. The width and longitudinal dimensions of the second plate portion 412 are formed to be approximately the same as the width and longitudinal dimensions of the L-shape 110 of the first embodiment. A first mounting member 430 is provided on the outer surface of the first plate portion 411 (the surface opposite to the second plate portion 412). The first mounting member 430 is a hook-and-loop fastener similar to the first mounting member 130 of the first embodiment, and its size is formed to be the same as that of the first plate portion 430. Second mounting members 450 are provided on both sides of the second plate portion 450. The second mounting member 450 is a hook-and-loop fastener similar to the second mounting member 150 of the first embodiment, and its size is also the same as that of the second mounting member 150. [Modification 2-2] The attachment 400a shown in Figure 5(c) may also be used. This attachment 400a has a T-shape 410 similar to that of the modified example 2-1 described above. In this modified example, a second mounting member 450 is provided on the inner surface of the first plate portion 411, in addition to both sides of the second plate portion 412. In this modified example, sandpaper 20 is attached to the inner surface of the first plate portion 411, both sides of the second plate portion 412, and the tip surface of the second plate portion 412. According to this modified example, the sandpaper 20 attached to the second plate portion 412 can be used to polish the side surface SF2 (edge ​​or end grain) of the member constituting the structure ST shown in Figure 2. In addition, the sandpaper 20 attached to the first plate portion 411 can be used to polish the exposed surface SF3 of the member P2 located at the back of the gap G.

[0033] [Difference 3] If no hooks are formed on the pad surface of the sanding pad 12, double-sided tape with a removable adhesive may be used as the first mounting member. Alternatively, the first mounting portion may include a clamping piece that is sandwiched between clamp bars 13 provided on the sanding pad 12. Specifically, as shown in Figure 7, the first mounting portion includes an adhesive portion 130a that is adhered to the outer surface of the first plate portion 111 and extends in a rectangular shape similar to the outer surface of the first plate portion, and a pair of clamping pieces 130b that extend outward from both ends of the adhesive portion 130a towards the first plate portion 111. Such an adhesive portion 130a and clamping pieces 130b are made of leather or cloth, and the pair of clamping pieces 130b are bent upward and sandwiched between clamp bars 13. Thus, the first mounting member can be any member that detachably attaches an L-shape or T-shape to the pad surface.

[0034] [Differentiation Example 4] Double-sided tape may be used as the second mounting member. For example, when using sandpaper with a paper-based backing, double-sided tape with a removable adhesive or double-sided tape with a strong adhesive can be used. In this way, the second mounting member can be a material suitable for the backing of the sandpaper. It should be noted that the second mounting member is not an essential component in this invention. For example, when using sandpaper with an adhesive layer formed on the backing, the second mounting member does not need to be provided.

[0035] [Difference 5] The present invention is not limited to the structure ST exemplified in the first embodiment, but can be used for various structures.

[0036] [Modification 6] In the above embodiments and modifications, the width dimensions of the first plate portions 111, 411 and the width dimensions (extension length) of the second plate portions 112, 412 are not particularly limited, but in order to perform the polishing work stably, it is preferable that the width dimension of the first plate portion 111, 411 is formed to be at least longer than the width dimension of the second plate portion 112, 412.

[0037] [Difference 7] Preferably, the contact area of ​​the first plate portions 111, 411 with respect to the sanding pad 12 is 60% or more of the pad area of ​​the sanding pad 12. Furthermore, it is even more preferable that this contact area is 70% or more of the pad area of ​​the sanding pad 12. By attaching the first plate portions 111, 411 to the sanding pad 12 with such a contact area, the posture of the orbital sander 10 during polishing operations can be stabilized (reducing wobbling caused by the steps that occur when attachments 100, 400 are attached). In addition, by attaching the first plate portions 111, 411 to the sanding pad 12 with such a contact area, the first plate portions 111, 411 are positioned in the highly polished portion of the sanding pad 12. Here, the highly polished portion of the sanding pad 12 includes the portion from the center to the edge of the sanding pad 12. In that area, the linear velocity increases during the eccentric circular motion (orbital motion) of the orbital sander 10, which increases the polishing power of the sanding pad 12. Furthermore, by placing attachments 100 and 400 in that area, the polishing power of attachments 100 and 400 is also improved.

[0038] [Differentiation 8] The attachment according to the present invention may be attached to sanders other than the orbital sander 10. For example, it may be attached to the sanding pad 12 of a straight sander or the pad of a hand sander. [Explanation of Symbols]

[0039] Side view of the SF2 structure 10 Thunder 20 Sandpaper 100 Attachments 110 L font 111 First plate section (mounting section) 112 Second plate section (extension section) 130 First mounting member 150 Second mounting member 200 Attachments 210 T font 300 Attachments

Claims

1. An attachment that is mounted on a sander used to polish the surface of a structure, A plate-shaped mounting part that is attached to the sanding pad of the aforementioned sander, A plate-shaped extension extending vertically from the mounting portion, A first mounting member is provided on the first surface, which is one side of the mounting portion, and detachably attaches the mounting portion to the sanding pad. Equipped with, An attachment provided on the extension portion, with a second surface perpendicular to the first surface to which sandpaper is attached.

2. The attachment according to claim 1, further comprising a second mounting member provided on the second surface for attaching the sandpaper to the second surface.

Images