Quick-release dual-purpose abrasive paper grinding plate and using method

Abstract

The invention provides a quick-release dual-purpose abrasive paper grinding plate and a using method, and is applied to the technical field of abrasive paper grinding plates, and the abrasive paper grinding plate comprises a grinding plate bottom plate, a quick-release holding head and a movable locking piece; a mounting groove for mounting the quick-release holding head is formed in the upper end surface of the grinding plate bottom plate in the length direction in an extending manner; the quick-release holding head comprises a holding handle quick-release head or an extension bar quick-release head, and the holding handle quick-release head or the extension bar quick-release head is provided with a positioning bottom plate; the movable locking piece is rotationally mounted on the grinding plate bottom plate and is used for locking the positioning bottom plate; the movable locking piece is provided with an unlocking position and a locking position, and when the movable locking piece is located at the locking position, the positioning bottom plate is locked in the mounting groove through the movable locking piece; and when in the unlocking position, the movable locking piece is separated from the positioning bottom plate, and the grip quick-release head or the extension bar quick-release head can be taken out from the mounting groove. According to the invention, the grip quick-release head or the extension bar quick-release head can be selectively mounted; the quick-release head can be quickly locked and separated through the movable locking piece, and replacement is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of sandpaper grinding plates, and in particular to a quick-detachable dual-purpose sandpaper grinding plate and a use method thereof. Background Art

[0002] Sandpaper is a material for grinding. Sandpaper grinding plates are used to install sandpaper to smooth the surface of objects, especially for finishing putty walls. Sandpaper templates can be replaced with different types of sandpaper to adapt to different scenarios and achieve the best grinding effect.

[0003] At present, most of the sandpaper grinding plates on the market adopt a grip-holding structure. The grip-holding sandpaper grinding plates have certain limitations in their use, such as it is not easy to trim high putty walls. Therefore, a sandpaper grinding plate can be designed with a grip-holding mechanism and an extension rod holding mechanism to cope with different usage scenarios. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of this, the present application provides a quick-release dual-purpose sandpaper grinding plate and a method of use, which can choose to install a handle quick-release head or an extension rod quick-release head; the quick-release head can be quickly locked and disengaged through a movable locking piece.

[0006] (II) Technical solution

[0007] The embodiments of this specification provide the following technical solutions:

[0008] The embodiment of the present specification provides a quick-release dual-purpose sandpaper grinding plate, comprising: a grinding plate base plate, a clamping paper, a quick-release holding head and a movable locking piece; the grinding plate base plate is used to install sandpaper; an installation groove is extended along the length direction of the upper surface of the grinding plate base plate; the clamping paper is symmetrically and movably installed on the upper end of the grinding plate base plate for clamping or loosening the sandpaper; the quick-release holding head can be detachably installed in the installation groove; the quick-release holding head comprises a handle quick-release head or an extension rod quick-release head, and the handle quick-release head or the extension rod quick-release head is provided with a positioning base plate for quick release positioning; the movable locking piece is rotatably installed on the grinding plate base plate for locking the positioning base plate; the movable locking piece has an unlocking position and a locking position, and when in the locking position, the movable locking piece locks the positioning base plate in the installation groove; when in the unlocking position, the movable locking piece is disengaged from the positioning base plate, and the handle quick-release head or the extension rod quick-release head can be taken out of the installation groove.

[0009] In this solution, the operator can choose to use the handle quick-release head or the extension rod quick-release head according to the actual usage scenario. Both quick-release heads are detachably installed in the mounting groove of the grinding plate bottom plate through the positioning base plate, and the locking or unlocking separation is achieved by rotating the movable locking member. Therefore, the movable locking member has an unlocking position and a locking position. When in the unlocking position, the corresponding handle quick-release head or extension rod quick-release head can be directly removed, and disassembly and replacement are convenient. For example, when the sandpaper grinding plate is needed to grind the putty wall at a higher position or the putty wall of the ceiling, the extension rod quick-release head is needed at this time, and the extension rod can be used to process the surface of higher or farther objects.

[0010] In some embodiments, the movable locking element includes an eccentrically arranged locking tongue, and a first locking groove is arranged at the side end of the positioning base plate, and the first locking groove is arranged concavely; the locking tongue of the movable locking element is rotated to lock or disengage from the first locking groove; the locking tongue is extended along the width direction of the grinding plate base plate, and the first locking groove is extended along the width direction of the handle quick release head; and / or, an eccentric handle is connected to one end of the locking tongue, and rotating the eccentric handle drives the locking tongue to lock or disengage from the first locking groove; the eccentric handle is provided with a locking surface, and when the movable locking element is in the locking position, the locking surface is locked and fits against the upper end surface of the grinding plate base plate.

[0011] In this solution, the movable locking element includes a locking tongue and an eccentric handle, and the rotation of the locking tongue is achieved by rotating the eccentric handle. When the eccentric handle of the movable locking element is rotated into the locking position, its locking surface is self-locking on the grinding plate bottom plate. Therefore, if the eccentric handle is not rotated in the opposite direction, the locking tongue will always be pressed and locked into the first locking groove of the corresponding positioning bottom plate.

[0012] In some embodiments, a second locking groove is provided at one side end of the positioning base plate away from the first locking groove, and the second locking groove is concave. A locking shaft that can engage with the second locking groove is installed on the side of the installation groove away from the movable locking member, and the locking shaft extends along the width direction of the grinding plate base plate, and the second locking groove extends along the width direction of the handle quick-release head. When installing the positioning base plate, the second locking groove at one end of the positioning base plate is inserted into the locking shaft, and the movable locking member is rotated to make the locking tongue contact and engage with the first locking groove.

[0013] In this solution, the side of the positioning base plate away from the first locking groove is initially positioned by the cooperation between the second locking groove and the locking axis at the installation groove, and then the locking positioning of the entire positioning base plate can be achieved by the locking cooperation between the locking tongue of the movable locking member and the first locking groove of the positioning base plate; the locking axis and the locking tongue in this solution are arranged in parallel, the locking axis is an optical axis, and the locking tongue is an optical axis with a notched groove.

[0014] In some embodiments, the grip quick-release head includes the positioning base plate and a grip for an operator to hold; and / or, the grip of the grip quick-release head is integrally formed with the positioning base plate.

[0015] The grip quick-release head in the present solution is provided with a grip that can be directly gripped by the operator, and the grip can be integrally formed with the positioning base plate.

[0016] In some embodiments, the extension rod quick release head includes the positioning base plate and an extension rod member hingedly connected via a universal joint.

[0017] In this solution, the extension rod quick-release head can be used to polish the surface of objects at a long distance. The extension rod is similar to the mop rod of a household flat mop. The extension rod can be relatively positioned on the bottom plate to achieve rotation adjustment in the front and rear or left and right directions.

[0018] In some embodiments, a guide groove is provided through the bottom of the positioning base plate along the length direction, and a guide protrusion that can cooperate with the guide groove is provided at the bottom of the installation groove.

[0019] In this solution, the guide groove is arranged in the middle of the bottom surface of the positioning base plate, and the guide protrusion is arranged in the middle of the inner wall of the installation groove, and the positioning base plate is centered by the cooperation of the two.

[0020] In some embodiments, a control knob is rotatably mounted on the clip board, and a pressing cam portion is provided at the lower end of the control knob, and the pressing cam portion is used to press down the paper clamping claws of the clip board to make it close to or away from the upper end surface of the grinding plate bottom plate, so as to clamp or loosen the sandpaper; and / or, the upper end surface of the grinding plate bottom plate is provided with a concave clamping groove corresponding to the paper clamping claws of the clip board; the upper end surface of the grinding plate bottom plate is also provided with a recessed groove for positioning the clip board; and / or, the control knob is rotatably mounted on the grinding plate bottom plate by mounting bolts and guide sleeves.

[0021] In this solution, the grinding plate bottom plate is in direct contact with the sandpaper, and the two ends of the sandpaper are folded to the upper end surface of the grinding plate bottom plate, and then the two ends of the sandpaper are pressed down by pressing the clamping paper. By turning the control knob, the clamping claws of the clamping paper are pressed down, so that the clamping claws clamp the sandpaper to the grinding plate bottom plate; by providing the concave clamping groove, it is convenient to further lock and position the sandpaper, so that it is not easy to loosen out of the concave clamping groove.

[0022] The embodiment of this specification also provides a method for using a quick-release dual-purpose sandpaper grinding plate, which is based on the aforementioned quick-release dual-purpose sandpaper grinding plate, and the grinding plate bottom plate can be optionally installed with a handle quick-release head or an extension rod quick-release head;

[0023] When the grip quick release head is used, the grip quick release head is first placed in the mounting groove of the grinding plate bottom plate; secondly, the second locking groove of the positioning bottom plate of the grip quick release head is clamped to the clamping axis on one side of the mounting groove for preliminary positioning; then the eccentric handle of the movable lock is rotated to lock the locking tongue with the first locking groove of the positioning bottom plate corresponding to the grip quick release head, and the movable lock enters the locking position, at which time the operator can directly hold the grip of the grip quick release head by hand for use;

[0024] When replacing the handle quick-release head with the extension rod quick-release head, the eccentric handle of the movable lock is rotated in the opposite direction to disengage the locking tongue from the first locking groove on one side of the handle quick-release head. In the process of removing the handle quick-release head upward, the engaging shaft is disengaged from the corresponding second locking groove of the positioning base plate. Then the extension rod quick-release head is placed and locked. At this time, the operator can directly use the extension rod of the extension rod quick-release head by holding it.

[0025] In some embodiments, the installation method of the extension rod quick release head is the same as that of the handle quick release head. First, the extension rod quick release head is placed in the installation groove of the grinding plate bottom plate, and the positioning base plate of the extension rod quick release head is placed in the installation groove; secondly, the second locking groove of the positioning base plate corresponding to the extension rod quick release head is clamped to the engaging axis on one side of the installation groove for preliminary positioning; then the eccentric handle of the movable locking member is rotated to make the locking tongue lock and cooperate with the first locking groove of the positioning base plate corresponding to the extension rod quick release head, and the movable locking member enters the locking position; and / or, when the positioning base plate corresponding to the handle quick release head or the extension rod quick release head is placed in the installation groove, the guide groove at the bottom of the positioning base plate cooperates with the guide protrusion in the installation groove; and / or, the locking tongue and the engaging axis are respectively extended along the width direction of the grinding plate bottom plate.

[0026] In some embodiments, when installing sandpaper, the two ends of the sandpaper are folded into the concave clamping groove on the upper end surface of the grinding plate bottom plate, and the control knob on the clamping paper is rotated to make the downward pressing cam part of the control knob press down the clamping claw of the clamping paper, so that the clamping claw contacts and presses the sandpaper into the concave clamping groove.

[0027] (III) Beneficial effects

[0028] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above-mentioned technical solutions adopted in the embodiments of this specification include at least the following: the present invention is equipped with a grip quick-release head and an extension rod quick-release head. The extension rod of the extension rod quick-release head can grind the surface of an object at a longer distance, and its extension rod can be rotated and adjusted relative to the positioning base plate in the front and rear or left and right directions, while the grip of the grip quick-release head can be directly used for palm grip; the two quick-release heads are detachably mounted in the mounting groove of the grinding plate base plate through the positioning base plate, and the locking and unlocking separation of the two quick-release heads are achieved through the rotation of the movable locking member. The quick-release heads are easy to install and disassemble, and the quick-install and quick-disassemble functions of the two quick-release heads are achieved; the present invention prevents the positioning base plate from being directly removed from the mounting groove by cooperating with the first locking groove of the positioning base plate and the locking tongue, and the second locking groove of the positioning base plate and the engaging shaft; the present invention can press down the clamping claw of the clamping paper board by rotating the downward pressing cam portion of the control knob, so that the clamping claw clamps the sandpaper into the concave clamping groove on the grinding plate base plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a stereoscopic view of the quick release head equipped with a grip in this application;

[0031] Figure 2 It is an exploded view of the grip quick release head and the grinding plate bottom plate in this application;

[0032] Figure 3 It is a stereoscopic view of the quick-release head equipped with an extension rod in this application;

[0033] Figure 4 It is an exploded view of the quick-release head of the extension rod and the grinding plate bottom plate in this application;

[0034] Figure 5 It is a stereoscopic view of the bottom perspective of the grip quick release head in this application;

[0035] Figure 6 It is a three-dimensional diagram of the bottom perspective of the positioning base plate of the extension rod quick release head in the present application;

[0036] Figure 7 is a three-dimensional view of the grinding plate bottom plate in the present application;

[0037] Figure 8 It is a front view and cross-sectional view of a sandpaper grinding plate equipped with a grip quick release head in the present application;

[0038] Fig. 9It is a left side cross-sectional view of the sandpaper grinding plate equipped with a grip quick release head in the present application;

[0039] Fig.10 It is a front view and cross-sectional view of a sandpaper grinding plate equipped with an extension rod quick release head in the present application;

[0040] Fig.11 It is a left side cross-sectional view of the sandpaper grinding plate equipped with an extension rod quick release head in the present application;

[0041] Fig.12 is a three-dimensional diagram of the movable locking member in the present application;

[0042] Fig.13 is an exploded view of the control knob and the clipboard in this application;

[0043] Among them: 1 is the grinding plate bottom plate, 2 is the clamping paper board, 3 is the grip quick release head, 4 is the extension rod quick release head, 5 is the positioning bottom plate, 6 is the movable locking piece, 7 is the engaging shaft, 8 is the control knob, 101 is the mounting groove, 102 is the guide protrusion, 103 is the concave clamping groove, 104 is the sinking groove, 105 is the vertical plate, 106 is the mounting hole, 201 is the paper clamping claw, 301 is the grip, 401 is the universal joint, 402 is the extension rod, 403 is the hinge shaft, 501 is the first locking groove, 502 is the second locking groove, 503 is the guide groove, 601 is the locking tongue, 602 is the eccentric handle, 603 is the missing groove, 801 is the pressing cam part, 802 is the mounting bolt, and 803 is the guide sleeve. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0045] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0046] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0047] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show the components related to the present application rather than being drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0048] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0049] Combination Figure 1-Figure 13 As shown, the present application provides a quick-release dual-purpose sandpaper grinding plate, comprising: a grinding plate bottom plate 1, a clamping paper 2, a quick-release holding head and a movable locking member 6; the grinding plate bottom plate 1 is used to install sandpaper, and the movable locking member 6 is used to lock and position the quick-release holding head; the clamping paper 2 is used to clamp or loosen the sandpaper, the bottom surface of the grinding plate bottom plate 1 directly contacts the sandpaper, and the two ends of the sandpaper are folded to the upper end surface of the grinding plate bottom plate 1, and then the two ends of the sandpaper are pressed down by pressing the clamping paper 2. The clamping paper 2 is symmetrically and movably installed on the upper end of the grinding plate bottom plate 1, and an installation groove 101 is extended along the length direction of the upper end surface of the grinding plate bottom plate 1, and the quick-release holding head can be detachably installed in the installation groove 101.

[0050] like Figure 1-Figure 4 As shown, the quick-release grip head includes a grip quick-release head 3 or an extension rod quick-release head 4. The operator can choose to use the grip quick-release head 3 or the extension rod quick-release head 4 according to the actual usage scenario; the grip quick-release head 3 or the extension rod quick-release head 4 is provided with a positioning base plate 5 for quick release positioning; the movable locking member 6 is rotatably mounted on the grinding plate base plate 1, and is used to lock the positioning base plate 5, such as Figure 2 and Figure 4 As shown, the movable locking member 6 is rotatably mounted on one side of the mounting groove 101 .

[0051] It should be noted that the extension rod quick release head 4 is particularly suitable for processing the surface of higher or farther objects, such as polishing putty walls at higher positions or ceiling putty walls.

[0052] like Figure 1-Figure 4 As shown, the movable lock 6 has an unlocking position and a locking position. Figure 1 and Figure 3 As shown in FIG. 1 , the movable locking member 6 locks the positioning base plate 5 in the mounting groove 101; in the unlocked position (as shown in FIG. 1 ), the movable locking member 6 locks the positioning base plate 5 in the mounting groove 101; Figure 2 and Figure 4 As shown in the figure), the movable locking member 6 is disengaged from the positioning base plate 5, and the handle quick-release head 3 or the extension rod quick-release head 4 can be taken out from the installation groove 101.

[0053] In a preferred embodiment, Figure 8 and Fig.12 As shown, the movable lock 6 includes an eccentrically arranged lock tongue 601, and a first concave lock groove 501 is arranged at the side end of the positioning base plate 5. By rotating the lock tongue 601 of the movable lock 6, the lock tongue 601 is locked or disengaged from the first lock groove 501, as shown in FIG. Figure 8 As shown, the locking tongue 601 is now matched with the first locking groove 501; an eccentric handle 602 is connected to one end of the locking tongue 601, and the eccentric handle 602 is rotated to drive the locking tongue 601 to lock or disengage with the first locking groove 501; the eccentric handle 602 is provided with a locking surface, and when the movable locking member 6 is in the locking position, the locking surface is locked and attached to the upper end surface of the grinding plate bottom plate 1. Figure 1 and Figure 3 As shown, when the eccentric handle 601 of the movable locking member 6 is rotated into the locking position, its locking surface is self-lockingly fitted on the upper end surface of the grinding plate base 1. Therefore, if the eccentric handle 601 is not rotated in the opposite direction, its locking tongue 6 will always be pressed and locked into the first locking groove 501 of the corresponding positioning base 5.

[0054] like Figure 2 and Figure 4 As shown, the locking tongue 601 is extended along the width direction of the grinding plate bottom plate 1 , and the first locking groove 501 is extended along the width direction of the handle quick release head 3 .

[0055] In one example, if Fig.12 As shown, the eccentrically arranged locking tongue 601 of this embodiment is realized by cutting out a notch 603 on the optical axis.

[0056] In a preferred embodiment, a second concave locking groove 502 is provided at one end of the positioning base plate 5 away from the first locking groove 501, and a clamping shaft 7 that can be engaged with the second locking groove 502 is installed on the side of the installation groove 101 away from the movable locking member 6, and the clamping shaft 7 is extended along the width direction of the grinding plate base plate 1, and the second locking groove 502 is extended along the width direction of the grip quick release head 3; when installing the positioning base plate 5, the second locking groove 502 at one end of the positioning base plate 5 is inserted into the clamping shaft 7, and the movable locking member 6 is rotated to make the locking tongue 601 contact and engage with the first locking groove 501. When the positioning base plate 5 is placed in the installation groove 101, the positioning base plate 5 is firstly positioned by the second locking groove 502 cooperating with the clamping shaft 7 at the installation groove 101, and then the movable locking member 6 is locked and matched with the first locking groove 501 of the positioning base plate 5, so that the locking and positioning of the entire positioning base plate 5 can be achieved, that is, the locking and positioning of the two quick release heads are achieved.

[0057] like Figure 2 or Figure 4 As shown, the locking shaft 7 and the locking tongue 601 are arranged in parallel, and the locking shaft 7 is an optical axis; Fig.12 As shown, the lock tongue 601 is an optical axis with a notch 603. When the movable lock member 6 is in the unlocked position, the notch 603 faces the first lock groove 501, so that the lock tongue 601 is not in contact with the first lock groove 501 at this time; Figure 8 As shown, when the movable locking member 6 is in the locking position, the notch 603 is away from the notch 603, so that the locking tongue 601 is directly in contact with the first locking groove 501, thereby forming a locked position.

[0058] like Figure 5 and Figure 6 The first locking groove 501 and the second locking groove 502 are concave arcs, so Figure 8 and Fig.10 From the cross-sectional view, after the locking tongue 601 cooperates with the first locking groove 501 and the engaging shaft 7 cooperates with the second locking groove 502, the positioning base plate 5 cannot be directly removed from the vertical direction.

[0059] In one example, if Figure 2 and Figure 5 As shown, the grip quick-release head 3 includes a positioning base plate 5 and a grip 301 for the operator to hold, that is, the operator can directly hold the sandpaper grinding plate in his hand; in this embodiment, the grip 301 of the grip quick-release head 3 is integrally formed with the positioning base plate 5.

[0060] In another example, Figure 3 , Figure 4 and Figure 6As shown, the extension rod quick release head 4 includes a positioning base plate 5 and an extension rod 402 hingedly connected by a universal joint 401. The extension rod quick release head 4 can be used to polish the surface of an object at a long distance. Its extension rod 402 is similar to the mop rod of a household flat mop. The extension rod 402 can be rotated relative to the positioning base plate 5 in the front-to-back or left-to-right direction. The extension rod 402 is hinged to the universal joint 401 through a hinge shaft 403, and is hinged to the corresponding hinge seat of the positioning base plate 5 through the universal joint 401. After the extension rod quick release head 4 is installed on the grinding plate base plate 1, the extension rod 402 can be rotated relative to the entire grinding plate base plate 1 in the front-to-back direction (in the width direction of the grinding plate base plate 1) or in the left-to-right direction (in the length direction of the grinding plate base plate 1).

[0061] In some embodiments, Figure 5 or Figure 6 , Fig. 9 or Fig.11 As shown, the bottom of the positioning base plate 5 of the grip quick release head 3 or the extension rod quick release head 4 is provided with a guide groove 503 extending through the bottom of the positioning base plate 5 along the length direction; Figure 2 or Figure 4 As shown, a guide protrusion 102 that can cooperate with the guide groove 503 is provided at the bottom of the installation groove 101.

[0062] In this embodiment, the guide groove 503 is arranged at the middle position of the bottom surface of the positioning base plate 5, and the guide protrusion 102 is arranged at the middle position of the inner wall of the installation groove 101. The positioning base plate 5 can be centered by the cooperation of the two.

[0063] In some embodiments, Figure 1-Figure 4 , Figure 8 and Fig.13 As shown, a control knob 8 is rotatably mounted on the clamping paper 2, and a pressing cam portion 801 is provided at the lower end of the control knob 8. The pressing cam portion 801 is used to press down the clamping claw 201 of the clamping paper 2 to make it close to or away from the upper end surface of the grinding plate bottom plate 1, so as to clamp or loosen the sandpaper; Figure 8 and Fig.10 As shown, at this time, the paper clamping claw 201 is pressed down by the pressing cam portion 801, and can clamp the sandpaper onto the grinding plate bottom plate 1.

[0064] In one example, if Figure 1 and Figure 8 As shown, the clipboard 2 is an elastic member, specifically a spring.

[0065] like Figure 8 and Fig.13As shown, the control knob 8 is rotatably mounted on the grinding plate bottom plate 1 through the mounting bolts 802 and the guide sleeve 803. The pressing cam portion 801 is sleeved on the guide sleeve 803 and can rotate on the guide sleeve 803. The guide sleeve 803 is fixed on the grinding plate bottom plate 1 through the mounting bolts 802.

[0066] In a preferred embodiment, Figure 7 and Figure 8 As shown, the upper end surface of the grinding plate bottom plate 1 is provided with a concave clamping groove 103 corresponding to the paper clamping claw 201 of the clamping paper board 2. The concave clamping groove 103 is provided to further lock and position the sandpaper so that it is not easy to loosen out of the concave clamping groove 103; Figure 8 That is a schematic diagram of the structure in which the paper clamping claw 201 is pressed down and enters into the concave clamping groove 103 .

[0067] In one embodiment, if Figure 7 and Figure 8 As shown, the upper end surface of the grinding plate bottom plate 1 is also provided with a recessed groove 104 for positioning the clipboard 2. After the clipboard 2 is positioned and placed in the recessed groove 104, it is fixed by fastener bolts; the recessed groove 104 can be provided on the guide protrusion 102.

[0068] In a preferred embodiment, Figure 7 As shown in FIG. 1 , the grinding plate bottom plate 1 is symmetrically provided with two vertical plates 105, and a mounting groove 101 is formed between the two vertical plates 105. The two sides of the vertical plates 105 are provided with a locking tongue 601 for installing the movable locking member 6 and a mounting hole 106 for installing the engaging shaft 7. It should be noted that the mounting hole 106 of this embodiment can be used to install the locking tongue 601 or the engaging shaft 7, so as Figure 1 As shown, the movable locking member 6 can be installed at the left side of the grinding plate bottom plate 1 or at the right side of the grinding plate bottom plate 1 .

[0069] Based on the same inventive concept, the embodiment of this specification also provides a method for using the quick-release dual-purpose sandpaper grinding plate according to any of the aforementioned embodiments, wherein the grinding plate bottom plate 1 of the sandpaper grinding plate can be optionally installed with a handle quick-release head 3 or an extension rod quick-release head 4;

[0070] When the grip quick-release head 3 is used, the grip quick-release head 3 is first placed in the mounting groove 101 of the grinding plate bottom plate 1; secondly, the second locking groove 502 of the positioning bottom plate 5 of the grip quick-release head 3 is clamped to the clamping shaft 7 on one side of the mounting groove 101 for preliminary positioning; then the eccentric handle 602 of the movable locking member 6 is rotated to lock the locking tongue 601 with the first locking groove 501 of the positioning bottom plate 5 corresponding to the grip quick-release head 3, and the movable locking member 6 enters the locking position, at which time the operator can directly hold the grip 301 of the grip quick-release head 3 by hand for use;

[0071] When replacing the handle quick-release head 3 with the extension rod quick-release head 4, the eccentric handle 602 of the movable locking member 6 is rotated in the opposite direction to disengage the locking tongue 601 from the first locking groove 501 on one side of the handle quick-release head 3. In the process of removing the handle quick-release head 3 upward, the engaging shaft 7 is disengaged from the corresponding second locking groove 502 of the positioning base plate 5. Then the extension rod quick-release head 4 is placed and locked by the movable locking member 6. At this time, the operator can directly use the extension rod 402 of the hand-held extension rod quick-release head 4.

[0072] It should be pointed out that the installation method of the extension rod quick release head 4 is the same as that of the grip quick release head 3, that is, when installing the extension rod quick release head 4, first place the positioning base plate 5 of the extension rod quick release head 4 in the installation groove 101 of the grinding plate base plate 1; secondly, make the second locking groove 502 of the positioning base plate 5 be clamped to the clamping shaft 7 on one side of the installation groove 101 for preliminary positioning; then rotate the eccentric handle 602 of the movable lock 6 to make the locking tongue 601 lock and cooperate with the first locking groove 501 of the positioning base plate 5 corresponding to the extension rod quick release head 4, and the movable lock 6 enters the locking position. Figure 3 and Fig.10 As shown, at this time, the locking tongue 601 of the movable locking member 6 is in the locking position.

[0073] The sandpaper grinding plate is simple to use and easy to operate; the same sandpaper grinding plate has two functions: being held by a handle and being extended by an extension rod to grind a distant or higher surface to be processed.

[0074] When the positioning base plate 5 corresponding to the handle quick-release head 3 or the extension rod quick-release head 4 is placed in the installation groove 101, the guide groove 503 at the bottom of the positioning base plate 5 is aligned with the guide protrusion 102 in the installation groove 101; the locking tongue 601 and the engaging shaft 7 are respectively extended along the width direction of the grinding plate base plate 1.

[0075] Among them Figure 1 or Figure 3 As shown, the grip quick-release head 3 includes a grip 301 that can be used for the operator to hold, and the extension rod quick-release head 4 includes an extension rod 402 that can be rotatably hinged relative to the positioning base plate 5.

[0076] In some embodiments, when installing the sandpaper, the two ends of the sandpaper are folded into the concave clamping groove 103 on the upper end surface of the grinding plate bottom plate 1; Figure 8 As shown, by rotating the control knob 8 on the clamping paper board 2 , the pressing driving part 801 of the control knob 8 presses down the clamping claw 201 of the clamping paper board 2 , so that the clamping claw 201 contacts and presses the sandpaper into the concave clamping groove 103 .

[0077] In this specification, the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the embodiments described later, the description is relatively simple, and the relevant parts can be referred to the partial description of the previous embodiments.

[0078] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A quick-release dual-purpose sandpaper grinding plate, characterized in that: include: The grinding plate bottom plate (1) is used for installing sandpaper; a mounting groove (101) is provided on the upper end surface of the grinding plate bottom plate (1) extending in the length direction; A clamping paper (2) is symmetrically and movably mounted on the upper end of the grinding plate bottom plate (1) and is used to clamp or release the sandpaper; A quick-release grip head is detachably mounted in the mounting groove (101); the quick-release grip head comprises a handle quick-release head (3) or an extension rod quick-release head (4), and the handle quick-release head (3) or the extension rod quick-release head (4) is provided with a positioning base plate (5) for quick-release positioning; A movable locking member (6) is rotatably mounted on the grinding plate base plate (1) and is used to lock the positioning base plate (5); the movable locking member (6) has an unlocking position and a locking position. When in the locking position, the movable locking member (6) locks the positioning base plate (5) in the mounting groove (101); when in the unlocking position, the movable locking member (6) is disengaged from the positioning base plate (5), and the handle quick-release head (3) or the extension rod quick-release head (4) can be removed from the mounting groove (101).

2. The quick-release dual-purpose sandpaper grinding plate according to claim 1, characterized in that: The movable locking member (6) comprises an eccentrically arranged locking tongue (601), and a first locking groove (501) is arranged at a side end of the positioning base plate (5); the locking tongue (601) of the movable locking member (6) is rotated to lock or disengage the locking tongue (601) and the first locking groove (501); the locking tongue (601) is extended along the width direction of the grinding plate base plate (1), and the first locking groove (501) is extended along the width direction of the handle quick-release head (3).

3. The quick-release dual-purpose sandpaper grinding plate according to claim 2, characterized in that: One end of the locking tongue (601) is connected to an eccentric handle (602), and the rotation of the eccentric handle (602) drives the locking tongue (601) to lock or disengage with the first locking groove (501); and / or, the eccentric handle (602) is provided with a locking surface, and when the movable locking element (6) is in the locking position, the locking surface is locked and fitted on the upper end surface of the grinding plate bottom plate (1).

4. The quick-release dual-purpose sandpaper grinding plate according to claim 3, characterized in that: A second locking groove (502) is provided at one end of the positioning base plate (5) away from the first locking groove (501); a locking shaft (7) capable of engaging with the second locking groove (502) is installed at the side of the mounting groove (101) away from the movable locking member (6); the locking shaft (7) is extended along the width direction of the grinding plate base plate (1); and the second locking groove (502) is extended along the width direction of the handle quick-release head (3); and / or the first locking groove (501) is concavely arranged, and the second locking groove (502) is concavely arranged. The two locking grooves (502) are concavely arranged; when the positioning base plate (5) is installed, the second locking groove (502) at one end of the positioning base plate (5) is inserted into the engaging shaft (7), and the movable locking member (6) is rotated to make the locking tongue (601) contact and engage with the first locking groove (501); and / or, a guide groove (503) is arranged through the bottom of the positioning base plate (5) along the length direction, and a guide protrusion (102) that can cooperate with the guide groove (503) is arranged at the bottom of the installation groove (101).

5. The quick-release dual-purpose sandpaper grinding plate according to any one of claims 1 to 4, characterized in that: The grip quick-release head (3) comprises the positioning base plate (5) and a grip (301) for an operator to hold; and / or the grip (301) of the grip quick-release head (3) is integrally formed with the positioning base plate (5).

6. The quick-release dual-purpose sandpaper grinding plate according to any one of claims 1 to 4, characterized in that: The extension rod quick-release head (4) comprises the positioning base plate (5) and an extension rod member (402) hingedly connected via a universal joint (401).

7. The quick-release dual-purpose sandpaper grinding plate according to claim 1, characterized in that: A control knob (8) is rotatably mounted on the clamping paper (2), and a pressing cam portion (801) is provided at the lower end of the control knob (8), and the pressing cam portion (801) is used to press down the clamping claw (201) of the clamping paper (2) to make it approach or move away from the upper end surface of the grinding plate bottom plate (1), so as to clamp or loosen the sandpaper; and / or, the upper end surface of the grinding plate bottom plate (1) is provided with an inner concave clamping groove (103) corresponding to the clamping claw (201) of the clamping paper (2); the upper end surface of the grinding plate bottom plate (1) is also provided with a sink groove (104) for positioning the clamping paper (2); And / or, the control knob (8) is rotatably mounted on the grinding plate bottom plate (1) via mounting bolts (802) and guide sleeves (803).

8. A method for using a quick-release dual-purpose sandpaper grinding plate, based on the quick-release dual-purpose sandpaper grinding plate according to claim 3 or 4, characterized in that: The grinding plate bottom plate (1) can be optionally equipped with a handle quick-release head (3) or an extension rod quick-release head (4); When the grip quick-release head (3) is used, the grip quick-release head (3) is first placed in the mounting groove (101) of the grinding plate bottom plate (1); secondly, the second locking groove (502) of the positioning bottom plate (5) of the grip quick-release head (3) is clamped to the clamping shaft (7) on one side of the mounting groove (101) for preliminary positioning; then, the eccentric handle (602) of the movable locking member (6) is rotated to lock the locking tongue (601) of the movable locking member (6) with the corresponding first locking groove (501) of the positioning bottom plate (5), and the movable locking member (6) enters the locking position. At this time, the operator can directly hold the grip (301) of the grip quick-release head (3) by hand for use; When replacing the handle quick-release head (3) with the extension rod quick-release head (4), the eccentric handle (602) of the movable lock member (6) is rotated in the opposite direction to disengage the locking tongue (601) from the first locking groove (501) on one side of the handle quick-release head (3). In the process of upwardly removing the handle quick-release head (3), the engaging shaft (7) is disengaged from the second locking groove (502) of the corresponding positioning base plate (5); and then the extension rod quick-release head (4) is placed and locked. At this time, the operator can directly use the extension rod member (402) of the extension rod quick-release head (4) by hand.

9. The method for using the quick-release dual-purpose sandpaper grinding plate according to claim 8, characterized in that: The installation method of the extension rod quick release head (4) is the same as that of the handle quick release head (3); and / or, when the positioning base plate (5) corresponding to the handle quick release head (3) or the extension rod quick release head (4) is placed in the installation groove (101), the guide groove (503) at the bottom of the positioning base plate (5) cooperates with the guide protrusion (102) in the installation groove (101); and / or, the locking tongue (601) and the engaging shaft (7) are respectively extended along the width direction of the grinding plate base plate (1).

10. The method for using the quick-release dual-purpose sandpaper grinding plate according to claim 8, characterized in that: When installing the sandpaper, the two ends of the sandpaper are folded into the concave clamping groove (103) on the upper end surface of the grinding plate bottom plate (1), and the control knob (8) on the clamping paper (2) is rotated so that the downward pressing cam portion (801) of the control knob (8) presses down the clamping claw (201) of the clamping paper (2), so that the clamping claw (201) contacts and presses the sandpaper into the concave clamping groove (103).

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