JP2013535345A - Plate locking mechanism - Google Patents

Abstract

  A plate locking mechanism for a surface treatment apparatus, comprising: a connecting plate having a receiving opening; a substrate; and a floating plate substantially alignable with the substrate. The fastener passes through the floating plate opening and engages the extended substrate opening, and the elastic member is operably connected to the fastener to hold the floating plate in contact with the substrate and the substrate is in the receiving opening. When positioned, the floating plate is rotatable to hold the connecting plate in place.

Description

  The present invention relates to the field of mechanical locking mechanisms. More specifically, the present invention relates to a plate for a surface treatment apparatus and a plate locking mechanism to be connected.

  Surface treatment techniques are commonly used to finish a surface to a desired state in both residential and work environments. Common examples include finishing sharpening of a wooden floor and grinding of a concrete floor and possibly subsequent polishing to provide a smooth, beautiful and attractive surface finish.

  Typically, a mechanical surface treatment apparatus is used because a large surface area needs to be treated to perform such operations. Such devices are well known and are usually controlled by a portable device with a single grinder, such as an orbital sander, or by an operator pushing the device, and have a larger surface area on the floor or other surface. It takes the form of a large apparatus that can be equipped with multiple grinders or similar processing tools that can be properly finished in less time.

  Such a large apparatus generally has a rotating plate on which one or more surface treatment boards that are rotated by a rotating shaft are attached. The surface treatment board can rotate with respect to the rotating plate and can touch the surface to be treated to give a desired finish. The rotating plate needs to be held in place by some holder or locking mechanism.

  An example of such a large surface treatment apparatus is a concrete grinder / polisher. These are typically very heavy devices that are further weighted to increase the grinding / polishing power by providing a weight on the housing or a weight built into the device itself. Therefore, it becomes difficult to transport the apparatus, and the operator needs a certain level of physical strength in order to move the apparatus left and right in a desired manner during the operation. If the grinding machine operates at a high speed, the surface being processed may be swept away by unintentional movement. To prevent this from happening, when the surface being processed is uneven, Since fine tuning is required, control of the equipment during grinding / polishing is extremely important.

  There is a need for a surface treatment device that is easier to control during operation and that can effectively and efficiently treat surfaces such as concrete and wooden floors.

  Accordingly, it is an object of the present invention to overcome or reduce at least some of the disadvantages of existing surface treatment equipment and provide consumers with more convenient options.

  The present invention provides a plate locking mechanism and a reciprocating plate used when a rotating plate to which one or a plurality of surface treatment tools are attached is detachably attached to a surface treatment apparatus.

Although not necessarily in the widest possible form of the sole or actual, the present invention
(A) a substrate having a substrate opening;
(B) a floating plate substantially alignable with the substrate, the floating plate having a first surface, an actuator, and a floating plate opening, the first surface contacting the substrate;
(C) a fastener that passes through the floating plate opening and engages the substrate opening; and (d) an elastic member that is operatively coupled to the fastener and contacts the second surface of the floating plate. An elastic member capable of generating a force on the second surface of the floating plate to hold the first surface of the floating plate in contact with the substrate;
The present invention relates to a plate locking mechanism for a surface treatment apparatus capable of locking a plate by relative movement between the floating plate and the substrate by rotating the actuator.
Preferably, the substrate is adapted to be attached to the bottom surface of the surface treatment apparatus.

A further aspect of the present invention is:
(A) a connecting plate having a receiving opening and at least one blocking member;
(B) a substrate having a substrate opening and having a shape complementary to the shape of the receiving opening;
(C) a floating plate substantially alignable with the substrate, the floating plate having a first surface, at least one floating plate protrusion, and a floating plate opening, wherein the first surface is the substrate; Floating plate in contact;
(D) a fastener that passes through the floating plate opening and engages the substrate opening; and (e) is operatively connected to the fastener and contacts the second surface of the floating plate to contact the substrate. An elastic member for holding the first surface of the floating plate in contact with
When the substrate is located in the receiving opening, the floating plate can lock the connecting plate in place by aligning at least one floating plate protrusion with at least one blocking member. The present invention relates to a plate locking mechanism for a surface treatment apparatus that is rotatable.

Yet another aspect of the present invention is:
(A) a floating plate having an actuator, at least one floating plate protrusion, and a floating plate opening;
(B) a fastener passing through the floating plate opening, the fastener having a head and a shank and adapted to engage the substrate; and (c) at least partially enclosing the shank; An elastic member extending between the head of the fastener and the receiving surface of the floating plate;
The present invention relates to a plate locking mechanism for a surface treatment device that compresses the elastic member by moving the head of the fastener to the receiving surface of the floating plate.

Another further aspect of the invention is:
(A) connecting a floating plate to a substrate using a fastener, wherein the substrate is attached to a bottom surface of the surface treatment apparatus, and the floating plate and the substrate are substantially alignable; The floating plate has at least one floating plate protrusion, and the fastener is operably connected to an elastic member held in a partially compressed state by the fastener;
(B) positioning the connecting plate so as to surround the substrate, the connecting plate having a receiving opening and at least one blocking member, the receiving opening including the floating plate and the aligned plate; A shape complementary to the shape of the substrate; and (c) holding the connecting plate by rotating the floating plate to align the at least one floating plate protrusion with the at least one blocking member. And a method for holding the connecting plate on the surface treatment apparatus.

  According to a further aspect of the present invention, there is provided a plate that defines a hollow passage, the plate extending substantially perpendicularly from the surface of the rotating plate and terminating at a connecting plate, the connecting plate being a surface of the rotating plate. It is possible to relate to a rotating plate for a surface treatment apparatus having a receiving opening continuous with the hollow passage.

  Further features of the present invention will become apparent from the following detailed description.

  Throughout this specification, unless the context requires otherwise, the expressions “comprises” and “comprises” or “comprising” are variants of the specified integer, or integer or It will be understood that it includes a group of processes, but does not exclude any other integer or group of integers.

  In order that the present invention may be readily understood and put into practice, a preferred embodiment will now be described by way of example with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals denote the same parts.

The perspective view of the bottom face of the surface treatment apparatus which employ | adopted the plate latching mechanism by one Embodiment of this invention. The exploded view which shows the component of the board latching mechanism by one Embodiment of this invention with the rotating plate and accessory which connect. The perspective view of the board locking mechanism by one Embodiment of this invention. 1 is a perspective view of a plate locking mechanism according to one embodiment of the present invention in an unlocked / removable manner. FIG. 1 is a perspective view of a plate locking mechanism according to one embodiment of the present invention in a locked / operable manner. FIG. The perspective view of the board locking mechanism by the further embodiment of the present invention. The perspective view of the board locking mechanism by another embodiment of this invention. FIG. 6 is a plan view of an alternative design for use in forming a plate locking mechanism according to various embodiments of the present invention. FIG. 6 is a plan view of an alternative design for use in forming a plate locking mechanism according to various embodiments of the present invention. FIG. 6 is a plan view of an alternative design for use in forming a plate locking mechanism according to various embodiments of the present invention. FIG. 6 is a plan view of an alternative design for use in forming a plate locking mechanism according to various embodiments of the present invention.

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the plate locking mechanism described herein are described for use in a concrete grinder / polisher surface treatment apparatus. However, it should be understood that they are equally applicable to a number of other surface treatment devices such as sanders or road surface treatment devices.

  As used herein, the term “surface treatment” refers to smoothing, polishing, grinding, cleaning, removing resin / lacquer / paint, etc., slicing, crushing, and scraping. The term “grinding” is generally used to refer to any type of surface treatment that uses an abrasive / friction process.

  FIG. 1 is a perspective view of the bottom surface of a surface treatment apparatus 10 employing a plate locking mechanism 50 according to an embodiment of the present invention. The surface treatment apparatus 10 may be any concrete grinder, floor polisher, sander, etc. of the type commonly used in the industry. Non-limiting examples of such surface treatment apparatus 10 include those commercially available from Polivac International Pty Ltd (eg, Polivac PV25 floor polisher with a brush speed of 420 rpm, There are devices commercially available from Polyback SV30 with a brush speed of 350 rpm, or 192 rpm Polyback SV25 Thunder) or Rotavac. The housing, body, and internal mechanisms of the surface treatment apparatus 10 are not themselves the subject of the present invention, and are generally of a standard type well known to those skilled in the surface treatment art.

  The surface treatment apparatus 10 has a housing 11 and moves together with the grinding machine 21 when an operator pushes the handle 12 to drive it. On the bottom surface of the surface treatment apparatus 10 is a rotating plate 20 to which a surface treatment tool in the form of a grinding machine 21 is attached. The rotating plate 20 has a cylindrical through-hole or opening formed in the center by a plate cage 22 whose inner wall is shown in FIG. A plate locking mechanism 50 that functions to hold the rotating plate 20 in a fixed position during use is disposed above the inside of the plate cage 22. Further details are shown in FIG.

  FIG. 2 is an exploded view showing the components of the plate locking mechanism 50 according to one embodiment of the present invention, together with the rotating plate 20 to be connected and accessories. In the described embodiment, the rotating plate 20 has three grinders 21 attached to the grinding surface, which grinds the surface to be treated in contact with the surface to be treated during operation. The grinder 21 may be a metal structure having an abrasive such as sandpaper, stone, silicon carbide chips or diamond chips. The rotating plate 20 has a plate bar 22 on the surface opposite to the grinding surface, and the plate bar 22 protrudes generally upward from the plane of the rotating plate 20 and has a grinding surface of the rotating plate 20 having the same diameter. Defining a hollow interior that forms a cylinder that is continuous with the openings of

  Further, the rotating plate 20 includes a board mounting opening 23 for each grinding machine 21, and the board mounting opening 23 is aligned with a grinding machine opening 24 formed in each grinding machine 21 in use. These aligned openings 23 and 24 receive the grinder fastener 25 and hold the grinder 21 firmly in place, but the grinder 21 can be rotated as required. In the illustrated embodiment, the grinder fastener 25 is in the form of a mandrel, but advantageously, the mandrel 25 can be a magnetic mandrel. The mandrel head 26 is shown in contact with the upper surface of the rotating plate 20 so that the grinding machine 21 to be connected does not inadvertently come off. By using the magnetic mandrel 25, the grinder 21 can be quickly and easily attached and detached, thereby using an abrasive of a material that becomes progressively finer in order to achieve a sufficiently smooth finish. If you need to do that, you can save a lot of time.

  The rotating plate 20 further includes a large number of ballast mounting openings 27, and a weight such as a ballast 28 is disposed on the rotating plate 20 so that it can be attached to increase the cutting force. The ballast fastener 29, which can be a simple bolt or the like, is used to fix the ballast 28 to the rotating plate 20 through an opening (not shown) formed in the ballast 28 and the ballast mounting opening 27. The It is an obvious advantage of the present invention that the ballast 28 can be carried on the rotating plate 20 rather than being placed on the housing 11 of the surface treatment apparatus 10 or incorporated into the surface treatment apparatus 10 itself. The plate cage 22 provides a sufficient gap between the rotary plate 20 and the bottom surface of the surface treatment apparatus 10, whereby the ballast 28 can be disposed in the gap, and the plate locking mechanism of the present invention is also provided. , The rotating plate 20 can be effectively levitated (described in detail later), which means that the ballast 28 can be more fully supported and used more effectively.

  For the sake of clarity, the connecting plate 30 is shown separately from the plate cage 22 in the drawing, but it is preferable that the connecting plate is formed integrally with the plate cage 22 or the connecting plate is ground on the rotary plate 20. A partial cover covering the inside of the hollow cylinder formed inside the plate rod 22 may be formed by being attached to the edge of the rate rod 22 in some way, closest to the surface not having the board 21. . The connecting plate 30 may be fixed to the upper edge of the plate rod 22 by welding, bolting, or otherwise, and the connecting plate 30 has a blocking member 32 having a protruding wedge shape in the illustrated embodiment. A pattern is formed with a receiving opening 31 shaped to form, so that the blocking member 32 is adjacent to the notch on both sides. The connecting plate 30 forms a component part of the plate locking mechanism 50 of the present invention.

  The plate locking mechanism 50 further includes a locking substrate 51 that can be disposed in the receiving opening 31 and is shaped to be complementary to the shape of the receiving opening 31. The locking substrate 51 has a central opening 52 formed in the main body 55 and a radial opening 53 formed in a protruding member 54 that radiates from the main body 55 of the locking substrate 51. Since the alternate pattern of the wedge-shaped projecting member 54 and the notch portion is similar to the pattern of the connecting plate 30, the relatively small opening in the locking substrate 51 is ignored, and the two are fitted to each other. A rigid board can be formed. Since the thickness of the locking substrate 51 and the thickness of the connecting plate 30 are substantially the same, when one is fitted into the other, the two surfaces are flush with each other when viewed from the bottom surface of the surface treatment apparatus 10. Is made. Using the locking substrate fastener 56, which may be in the form of screws, bolts, etc., that penetrate the radial openings 53 and connect to any part of the surface treatment device 10 that can rotate with appropriate strength, the locking substrate 51 is surfaced. It can be connected to the bottom surface of the processing apparatus 10. In an alternative embodiment, the locking substrate 51 may simply be a rotating plate or surface that already exists on the bottom surface of the surface treatment device 10 to which the floating plate 60 can be attached. Therefore, the present invention can be incorporated not only into a new surface treatment apparatus 10 but also into an existing apparatus with minimal changes.

  The floating plate 60 has a contact surface that contacts the locking substrate 51, and this contact surface has a shape that substantially matches the shape of the plate 51. The surface of the floating plate 60 opposite to the surface in contact with the locking substrate 51 is provided with an actuator in the form of a handle 61, and the handle 61 may be provided with a handle opening 62 (shown more clearly in FIG. 3). Below the handle 61 is a fastening member 63 in the form of a bolt having a shank 64 that is at least partially threaded, and around the shank 64 is in the form of a spring, such as a compression spring in the illustrated embodiment. The elastic member or buffer member 65 is disposed. The elastic member 65 may be of various other types well known to those skilled in the art, such as springs or solid rubber and / or polymer compression bodies of various designs, provided that the material used can withstand the wear environment in which it is relatively worn. It may be a form. The thread portion of the shank 64 passes through the central opening 66 of the floating plate, terminates at the threaded central opening 52 of the locking substrate 51, and engages therewith. The thread portion of the shank 64 does not actually screw into the central opening 66 of the floating plate, but simply passes through the opening. The components of the plate locking mechanism 50 are shown in more detail in FIG.

  FIG. 3 is a perspective view of the plate locking mechanism 50 according to one embodiment of the present invention. Again, for clarity, the connecting plate 30 is shown separately from the rest of the rotating plate 20. As apparent from FIG. 3, the shape of the floating plate 60 and the shape of the locking substrate 51 firmly fit with the complementary shape of the receiving opening 31 of the connecting plate 30 when aligned.

  As described above, since the locking substrate 51 is fixed to the bottom surface of the surface treatment apparatus 10 at an appropriate position by the locking substrate fastener 56, it cannot be freely moved by any method. The component to which the locking substrate 51 is attached (or the locking substrate 51 itself) is a standard component that can rotate the rotating plate 20 by being rotatable by the motor of the surface treatment apparatus 10. The contact surface of the floating plate 60 is held in direct contact with the locking substrate 51 unless a tensile force is applied to the handle 61. Therefore, when the floating plate 60 and the locking substrate 51 are aligned in a fixed position, the handle 61 is First, the receiving opening 31 is entered, and the rotating plate 20 is pulled up until the locking substrate 51 is positioned in the receiving opening 31 and the visible surface of the connecting plate 30 and the visible surface of the locking substrate 51 are substantially flush with each other. The connecting plate 30 and the rotating plate 20 to be attached are arranged at appropriate positions. Thereafter, the rotating plate 20 is placed in a fixed position and is locked.

  The central opening 66 of the floating plate is not threaded and does not engage itself with the threaded shank 64 of the bolt 63, but the floating plate 60 is brought into contact with the surface of the locking substrate 51 by the compressive force generated by the elastic member 65. Held. This compressive force is generated when the bolt 63 is screwed onto the locking substrate 51, sufficiently engaged with the locking substrate 51, and the elastic member 65 is compressed by the head of the bolt 63 or a washer to be connected. 65 transmits the compressive force to the surface of the floating plate 60 with which the elastic member contacts, thereby bringing the floating member 60 into contact with the locking substrate 51. The force transmitted to the floating plate 60 is determined by the degree to which the bolt 63 is tightened. As a result, the degree of the buffer effect generated when the force from the rotating plate 20 works against the buffer effect is determined.

In one embodiment, the present invention provides:
(A) a connecting plate having a receiving opening and at least one blocking member;
(B) the substrate having a substrate opening and received within the receiving opening;
(C) a floating plate in contact with the substrate and substantially alignable with the substrate, the floating plate having at least one floating plate protrusion and a floating plate opening;
(D) a fastener that passes through the floating plate opening and engages the substrate opening; and (e) an elastic member adapted to apply a force to the surface of the floating plate;
The present invention relates to a plate locking mechanism for a surface treatment apparatus in which the connecting plate is held by rotating the floating plate to align the at least one floating plate protrusion with at least one blocking member.

  Preferably, the elastic member is operatively connected to the fastener.

  Preferably, the elastic member is a spring through which the fastener passes.

  The elastic member is further compressed by further positioning the fastener in the substrate opening. By further compressing the elastic member, the force applied to the surface of the floating plate increases. The force applied to the surface of the floating plate by the elastic member works against the force applied to the floating plate due to the weight of the connecting plate.

  FIG. 4A is a perspective view showing the unlocked / removable aspect of the plate locking mechanism 50 according to one embodiment of the present invention. As described with reference to FIG. 3, the floating plate 60 and the locking substrate 51 are aligned and are inserted into the receiving openings 31 of the connecting plate 30 together. As apparent from FIG. 4, when the floating plate 60 and the locking substrate 51 are aligned, the head of the locking substrate fastener 56 is accommodated in a floating plate opening 68 formed in the floating plate protrusion 67. This prevents any rotational movement of the floating plate 60.

  In this position shown in FIG. 4A, the locking substrate 51 is fixed to the bottom surface of the surface treatment apparatus 10, and the connecting plate 30 to which the rotating plate 20 (not shown for the sake of clarity) is attached is the handle 61. FIG. 3 shows a state in which the locking substrate 51 is formed in the same plane in the receiving opening 31. Since the locking substrate 51 and the connection plate 30 have the same thickness, it can be seen that the floating plate 60 is located above the surface of the connection plate 30. From the illustrated position, the user can lock the rotating plate 20 and the connecting plate 30 in place.

  FIG. 4B is a perspective view showing a locked / operable aspect of the plate locking mechanism 50 according to one embodiment of the present invention. When moving from the position of FIG. 4A to the position of FIG. 4B, the user must pull up the handle 61, which is formed integrally with or attached to the floating plate 60. Therefore, when the handle 61 is pulled up, the floating plate 60 is separated from the surface of the locking substrate 51 that has been in contact, and the elastic member 65 is compressed. In this way, the user pulls up the floating plate 60 to a position where the floating plate protrusion 67 comes above the height of the head of the locking substrate fastener 56, and then twists or rotates the handle 61 to rotate the floating plate. It is necessary to rotate 60 with respect to both the shank 64 of the bolt 63 and the locking substrate 51. As a result, the floating plate protrusion 67 is positioned between the heads of the locking substrate fastener 56, and the user can release the handle 61 at this position. The locking substrate fastener 56 prevents the floating plate 60 from rotating and reaching the position where the floating plate protrusion 67 is aligned with the protruding member 54 and the rotating plate 20 is released. Accordingly, the locking substrate fastener 56 not only functions to fix the locking substrate 51 to the surface treatment apparatus 10, but also functions to hold the plate locking mechanism in a locked / operable position.

  In this position, the blocking member 32 of the connecting plate 30 is confined on the back side, and at least partially contacts the surface of the protruding portion 67 of the floating plate that has been in contact with the protruding member 54 of the locking substrate 51. Will understand. This is an operable mode, and the rotating plate 20 (integrated with the connecting plate 30 or attached to the connecting plate 30) is held at a fixed position on the bottom surface of the surface treatment apparatus 10, and at this position the floating plate It is locked by 60 of the above-described embodiments. In this operable mode, the locking substrate 51 and the floating plate 60 are located in a hollow cylindrical opening defined by the wall of the plate cage 22. This aspect is illustrated in FIG. Subsequently, the grinding machine 21 can be placed at a fixed position on the rotating plate 20, and the user can start surface treatment processing such as grinding of the cement floor.

  When the user wants to remove the rotating plate 20 or add or remove the ballast 28 after the surface treatment, the handle 61 is lifted from the position shown in FIG. When the part is rotated until it aligns with the floating plate opening 68, the handle 61 is released in this position, and the unlocked or removed position shown in FIG. 4A can be achieved. Thereafter, the rotating plate 20 is easily removed for adjustment and reattachment or storage.

  The system described above offers many advantages over the prior art. First, once the locking substrate 51 is permanently attached to the bottom surface of the surface treatment apparatus 10, the rotating plate 20 can be attached and detached simply by switching the locking mode and the unlocking mode by pulling and twisting the handle 61. Can do. As a result, for example, to grind the surface to a fine finish, various grades of grinding machine 21 and ballast 28 may need to be added to or removed from rotating plate 20 or actually Significant time savings can be achieved during operations such as concrete polishing, which may require the use of rotating plates 20 of different sizes or weights. In order to perform such periodic replacement, the rotating plate 20 needs to be frequently removed. Therefore, it is possible to save time and money for the operator by providing an arbitrary mechanism that enables quick replacement. Save money.

  Secondly, the important point is that the illustrated design provides a buffering effect against collisions and vibrations caused by uneven surfaces during surface treatment. At the time of surface treatment, the method or angle of holding the grinder 21 with the rotating plate 20 or the method or angle of directing the grinder 21 to the surface to be treated is important. Since this angle changes depending on the uneven surface, the cutting or grinding operation is stronger than desired, and the surface may be permanently damaged. In the present invention, the rotating plate 20 is not held in an absolute fixed position, but is rotated by the elastic member 65 and by the method of hanging the rotating plate 20 from the bottom surface of the surface treatment apparatus 10 by the locking mechanism 50. A system is provided in which the plate 20 can bend and change direction according to the special contour of the workpiece surface. This effect will be described in detail below.

  In the locked state shown in FIG. 4B, the rotating plate 20 is substantially suspended from the bottom surface of the surface treatment apparatus, and the blocking member 32 of the connecting plate 30 is the floating plate protrusion of the floating plate 60. It is suspended by overlapping with 67 and engaging. If the floating plate 60 has no resistance received from the compression spring 65 held in place by the head of the bolt 63 engaged with the locking substrate 51 and the connecting washer in the threaded shank 64, It is biased toward the processing surface by the weight. If a collision or tilt occurs on the work surface during operation, the rotating plate 20 tilts to one side or the other. The force generated by this movement is transmitted to the floating plate protrusion 67 and pressed against the compression spring 65, further compressing the compression spring 65. The compression spring 65 allows this slight movement, but suppresses the impact of the force, and returns to the normal state when no additional force is detected by the rotating plate 20. This operation moves the rotating plate 20 and thus the attached grinder 21 as much as necessary while suppressing vibrations and sudden movements due to uneven surfaces that may cause excessive grinding or surface damage. Can adapt to non-uniform surfaces.

  A further advantage of flexibility obtained by using the floating plate 60 and the elastic member 65 is that the surface treatment apparatus 10 is easier to operate for the operator. As described above, the floating plate 60 can be moved with relatively little pressure, and the surface treatment apparatus 10 follows the movement while maintaining the movement of the floating plate. The operator's effort required to move the surface treatment device 10 to the left and right is small and easy to control, so that better finishing can be performed with less physical effort. This is not necessarily operated by a delicate person, and is a significant improvement over prior art devices that cannot be ideally finished because they are prone to unexpected or undesirable movements. It is a point.

  Furthermore, in addition to the ease of attachment and removal of the rotating plate 20, the design of the rotating plate 20 itself allows the ballast 28 to be directly connected to the rotating plate 20 instead of the housing 11 of the surface treatment apparatus 10. This makes it easier to separate the weight of the device and the weight of the ballast, and the device and the ballast can be separated for easier and safer lifting and transport. What is important is that this can also reduce the wear of the surface treatment apparatus itself, because this is made so that the rotating plate 20 can withstand the weight of the ballast 28, This is because the rotating plate 20 takes most of the actual work of the surface treatment apparatus 10 during surface grinding. It is a great advantage to provide a system in which a grinding tool, i.e. a grinding plate that is in contact with the processing surface via the rotating plate 20 and the grinding machine 21, is more or less separated from the body of the surface treatment device 10 and suspended and floated. It is. This is because the adjustment of the surface to be processed, the rocking caused by the collision, and the resistance received on the surface to be processed are all transmitted to the rotary plate 20 and eventually the elastic member 65, thereby causing necessary work and wear generated in the surface treatment apparatus 10. This is because it becomes much easier for the user to control the surface treatment apparatus 10 when such an event occurs. In view of the advantages obtained by the above-described levitation effect, in the present invention, it is preferable to use the surface treatment apparatus 10 having no wheel or having a removable wheel. This is because the effect of the levitation support system is reduced because the contact with the surface to be treated is reduced by permanently lifting and supporting by a series of wheels.

  One embodiment of the present invention relates to a rotating plate for a surface treatment apparatus comprising a plate cage defining a hollow passage, the rod extending upward from the plane of the rotary plate and having a receiving opening communicating with the hollow passage. Terminate with a connecting plate.

  Preferably, the plate extends above the surface of the rotating plate by a distance sufficient to accommodate the locking mechanism in the hollow passage formed by the plate.

  Suitably, the receiving opening has a complementary shape to the locking substrate that can be received therein. The rotating plate is provided with a board mounting opening and / or a ballast mounting opening for mounting a grinding tool and a weight, respectively. The grinding tool may be attached to the rotating plate using a fastener such as a magnetic mandrel. By using a magnetic mandrel, the grinding tool can be removed and replaced very efficiently.

  As a matter of course, since the receiving opening 31 of the connecting plate 30 must be adapted to the shape of the locking substrate 51 of the locking mechanism in order to function well, the plate locking mechanism 50 includes the connecting plate 30 of the rotating plate 20. However, the locking plate mechanism 50 is a combination of the locking substrate 51 and the floating plate 60 for attachment to the surface treatment apparatus 10 and an elastic member 65 that actually provides a locking action. Since the connecting plate 30 is generally formed integrally with the rotating plate 20 or permanently attached to the rotating plate 20, the rotating plate and other locking mechanism components are defined by complementary shapes and operating engagements. Therefore, the solution of the present invention proposed here is shared by the rotating plate and other locking mechanism parts.

  Those skilled in the art will appreciate that the present invention is not limited to the particular shape of the coupling plate 30, the receiving opening 31, the locking substrate 51, and the floating plate 60 shown in FIGS. Other shapes are also suitable, and, as will be described later, in practice, other shapes can also provide specific advantages.

  FIG. 5 is a perspective view of a plate locking mechanism 100 according to a further embodiment of the present invention. The plate locking mechanism 100 basically operates in the same manner as described above, but the shapes of the components are changed from the wedge-shaped blocking member 32, the protruding member 54, and the floating plate protruding portion 67. Because of the clover-shaped design, the edges of the individual protrusions are circular.

  The connecting plate 101 has a receiving opening 102 and a blocking member 103 corresponding to a protruding member having a rounded tip. The locking substrate 110 has three projecting members 111, a central opening 112, and a number of radial openings 113 for receiving fasteners that attach the locking substrate 110 to the bottom surface of the surface treatment apparatus 10. The floating plate 120 has a floating plate protrusion 121, a floating plate opening 122, and a floating plate central opening 123 that has a thread and engages a complementary threaded portion of the bolt 125. The handle 126 is integrally formed on the surface of the floating plate 120 that does not contact the locking substrate 110, and an elastic member 127 in the form of a compression spring is disposed around the bolt 125.

  Similar to the above-described embodiment, the contact surfaces of the floating plate 120 and the locking substrate 110 are substantially the same in shape and size, so that they can be aligned with each other without significant deviation. Since these shapes are complementary to the shapes of the receiving openings 102, the locking substrate 110 can be disposed therein, and as described above, the rotating plate (not shown, but integrated with the connecting plate 101). Can be attached and detached.

  The main difference in changing the shape from a wedge-shaped design to a clover-shaped design is the way the floating plate moves in response to the movement transmitted from the rotating plate. The clover-shaped design shown in FIG. 5 results in a slightly clearer circular motion of the rotating plate. This circular movement is advantageously suitable for grinding specific users and specific surface types.

  FIG. 6 is a perspective view of a plate locking mechanism 200 according to still another embodiment of the present invention. The plate locking mechanism 200 basically operates in the same manner as described above, except that the shape of the component is changed from a wedge-shaped or clover leaf-shaped design to form an X-shaped or cruciform shape. Because of the design, each protrusion is reminiscent of a pentagonal top and side.

  The connecting plate 201 has a receiving opening 202 and a triangular blocking member 203. The locking substrate 210 has four projecting members 211, a central opening 212, and a number of radial openings 213 for receiving fasteners that attach the locking substrate 210 to the bottom surface of the surface treatment apparatus 10. The floating plate 220 has a floating plate protrusion 221, a floating plate opening 222, and a floating plate central opening 223 that has a thread and engages a complementary threaded portion of the bolt 225. The handle 226 is integrally formed on the surface of the floating plate 220 that does not contact the locking substrate 210, and an elastic member 227 in the form of a compression spring is disposed around the bolt 225.

  Similar to the above-described embodiment, the contact surfaces of the floating plate 220 and the locking substrate 210 are substantially the same in shape and size, so that they can be aligned with each other without being greatly displaced. Since these shapes are complementary to the shape of the receiving opening 202, the locking substrate 210 can be disposed therein, and as described above, the rotating plate (not shown, but integrated with the connecting plate 201). Can be attached and detached.

  Similar to the embodiment shown in FIG. 5, the main difference by changing the shape of the various protrusions is the way the floating plate moves in response to the movement transmitted from the rotatable plate. With the design shown in FIG. 6, the rotating plate can be further stabilized when operating at higher rotational speeds per minute.

  7A-7D are plan views of a number of alternative designs 310, 320, 330, 340 used to form the plate locking mechanism of various embodiments of the present invention. Each embodiment is a view in which the locking substrate is housed in the connecting plate, and in each design, the floating plate is under the locking substrate (hidden in this figure) and is similar to the above-described embodiment. Furthermore, it has substantially the same shape as the locking substrate. These alternative designs have unique advantages in terms of the buffering effect provided and the operator experience when driving the surface treatment apparatus 10. 310 indicates a structure of a locking substrate and a floating plate in which a projecting portion extending from a central portion is formed into a square shape, 320 indicates a trident pentagonal projecting portion, 330 indicates a simple triangle having a cut-off portion, 340 is the same state as 310, but each of the faces of the quadrangular protrusions are curved (the outermost part is curved outward, ie convex, the side is curved inward, That is, the shape is concave.

  Throughout this specification, its purpose is to describe the preferred embodiments of the invention without limiting the invention to any embodiment or specific collection of features. Thus, in light of the present disclosure, those skilled in the art will appreciate that various modifications and changes can be made in the particular embodiments illustrated without departing from the scope of the present invention.

Claims (38)

(A) a connecting plate having a receiving opening and at least one blocking member;
(B) a substrate having a substrate opening and having a shape complementary to the shape of the receiving opening;
(C) a floating plate substantially alignable with the substrate, the floating plate having a first surface, at least one floating plate protrusion, and a floating plate opening, wherein the first surface is the substrate; Floating plate in contact;
(D) a fastener that penetrates through the floating plate opening and engages with the substrate opening; and (e) an elastic member that is operatively connected to the fastener and press-contacted to the second surface of the floating plate. Prepared,
By accommodating the substrate in the receiving opening, the floating plate is rotated to align at least one floating plate protrusion with at least one blocking member and lock the connecting plate in place. A plate locking mechanism for a surface treatment apparatus.   The plate locking mechanism according to claim 1, wherein the connecting plate is connected to a rotating plate provided with a grinding tool.   The plate locking mechanism according to claim 2, wherein the grinding tool is connected to the rotating plate by a magnetic mandrel.   The plate locking mechanism according to claim 1, wherein the connecting plate is integral with the rotating plate.   The plate locking mechanism according to claim 1, wherein the floating plate further includes an actuator.   The plate locking mechanism according to claim 1, wherein the substrate includes at least one projecting member extending from the main body.   The plate locking mechanism according to claim 6, wherein the at least one floating plate protrusion is alignable with the substrate at the at least one protrusion member.   The plate locking mechanism according to claim 1, wherein, in the at least one projecting member, the substrate is adapted to be received in a complementary portion of the receiving opening.   The plate locking mechanism according to claim 1, wherein the fastener is screwed into the substrate opening.   The plate locking mechanism according to claim 1, wherein the elastic member is a spring.   The plate locking mechanism according to claim 10, wherein the spring is a compression spring through which the fastener passes.   12. The plate mechanism according to claim 11, wherein the compression spring is compressed by further moving the fastener to the substrate opening, and the force for holding the first surface of the floating plate in contact with the substrate increases. Stop mechanism.   The plate locking mechanism according to any one of claims 6 to 12, wherein, in the at least one protruding member, the substrate includes a radial opening for receiving a positioning fastener.   The plate locking mechanism according to claim 13, wherein a head portion of the positioning fastener can be received in a floating plate opening formed in the at least one floating plate protrusion.   15. The actuator moves by a sufficient distance in a direction away from the substrate to position the floating plate above the height of the positioning fastener head before rotating the actuator. Plate locking mechanism. (A) a substrate having a substrate opening;
(B) a floating plate substantially alignable with the substrate, the floating plate having a first surface, an actuator, and a floating plate opening, the first surface contacting the substrate;
(C) a fastener that passes through the floating plate opening and engages the substrate opening; and (d) an elastic member that is operatively coupled to the fastener and contacts the second surface of the floating plate. An elastic member capable of generating a force on the second surface of the floating plate to hold the first surface of the floating plate in contact with the substrate;
A plate locking mechanism for a surface treatment apparatus capable of locking a plate by rotating the actuator to make a relative movement between the floating plate and the substrate.   The plate locking mechanism according to claim 16, wherein the substrate includes at least one projecting member extending from the main body.   18. The plate locking mechanism according to claim 16 or 17, wherein the floating plate has at least one floating plate protrusion extending from the main body and alignable with the substrate at the at least one protruding member.   19. A plate locking mechanism according to any one of claims 16 to 18, wherein, in the at least one projecting member, the substrate is adapted to be received in a complementary portion of a connecting plate receiving opening.   20. The connecting plate is held by the at least one floating plate protrusion by the movement of the actuator away from the substrate and the relative rotation of the actuator when received in the receiving opening. Plate locking mechanism.   The plate locking mechanism according to any one of claims 16 to 20, wherein the fastener is screwed into the substrate opening.   The plate locking mechanism according to any one of claims 16 to 21, wherein the elastic member is a spring.   The plate locking mechanism according to claim 22, wherein the spring is a compression spring through which the fastener passes.   24. The plate mechanism according to claim 23, wherein by further moving the fastener to the substrate opening, the compression spring is compressed to increase the force to hold the first surface of the floating plate in contact with the substrate. Stop mechanism.   25. A plate locking mechanism according to any one of claims 17 to 24, wherein in the at least one projecting member, the substrate includes a radial opening for receiving a positioning fastener.   26. The plate locking mechanism according to claim 25, wherein a head portion of the positioning fastener can be received in a floating plate opening formed in the at least one floating plate protrusion.   27. The actuator is moved a sufficient distance in a direction away from the substrate to place the floating plate above a height of the positioning fastener head before rotating the actuator. Plate locking mechanism. (A) a floating plate having an actuator, at least one floating plate protrusion, and a floating plate opening;
(B) a fastener passing through the floating plate opening, the fastener having a head and a shank and adapted to engage the substrate; and (c) at least partially enclosing the shank; An elastic member extending between the head of the fastener and the receiving surface of the floating plate;
A plate locking mechanism for a surface treatment apparatus that compresses the elastic member by moving the head of the fastener to the receiving surface of the floating plate.   29. The plate locking mechanism according to claim 28, wherein the floating plate has a plurality of floating plate protrusions extending from the central body.   30. The plate locking mechanism according to claim 28 or 29, wherein the fastener is a spring.   The plate locking mechanism according to claim 30, wherein the spring is a compression spring through which the fastener passes. (A) connecting the floating plate to the substrate using a fastener, wherein the substrate is attached to the bottom surface of the surface treatment apparatus, and the floating plate and the substrate are substantially alignable; The floating plate has at least one floating plate protrusion, and the fastener is operably connected to an elastic member held in a partially compressed state by the fastener;
(B) positioning the connecting plate so as to surround the substrate, the connecting plate having a receiving opening and at least one blocking member, the receiving opening being aligned with the floating plate and the A shape complementary to the shape of the substrate; and (c) holding the connecting plate by rotating the floating plate to align the at least one floating plate protrusion with the at least one blocking member. A method of holding a connecting plate including a surface treatment apparatus.   33. The method of claim 32, wherein the method is performed using the plate locking mechanism of any one of claims 1-31. A plate wall defining a hollow passage, the plate wall extending substantially perpendicularly from the surface of the rotating plate and terminating at a connecting plate;
A rotating plate for a surface treatment apparatus, wherein the connecting plate is in a plane parallel to the surface of the rotating plate and has a receiving opening continuous with the hollow passage.   35. The rotating plate according to claim 34, wherein the plate cage extends above the surface of the rotating plate by a distance sufficient to accommodate a plate locking mechanism in the hollow passage.   36. A rotating plate according to claim 34 or 35, wherein the receiving opening is adapted to receive a substrate having a shape complementary to the receiving opening.   37. The rotating plate according to any one of claims 34 to 36, further comprising a board mounting opening and / or a ballast mounting opening for mounting the grinding machine and the weight, respectively.   38. The rotating plate according to claim 37, wherein the grinding machine is attached to the rotating plate by a magnetic mandrel.

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