Angle gauge with adjustable angle and knife sharpener thereof

Abstract

The angle gauge comprises at least one angle adjusting mechanism, each angle adjusting mechanism comprises a first support, a first inclined plane body and an angle adjusting part, the first inclined plane body is provided with a first inclined plane used for knife sharpening, and the angle adjusting part is provided with a second inclined plane; the first inclined plane body is connected with the first support in a turnover mode, the second inclined plane drives one end of the first inclined plane body to ascend or descend by moving the angle adjusting piece, and the inclination angle of the first inclined plane is adjusted. The angle gauge solves the problems that in the prior art, the inclination angle of the inclined plane in the angle gauge can be adjusted; the second problem is how to enable the knife sharpener to have various grinding functions (such as coarse grinding, fine grinding and polishing); the third problem is how to reduce the size of the knife sharpener, and the knife sharpener is convenient to store and carry; and 4, the problem of how to enable the knife sharpener to have the function of screwing arrows is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of knife sharpeners, and particularly to an angle gauge with adjustable angle and a knife sharpener thereof. Background Art

[0002] Currently, tools (such as what is called an "angle gauge") that provide an initial sharpening angle for a sharpening rod of a knife sharpening part have a fixed sharpening angle. Only by replacing the inclined surface can different inclined angles be changed, and these inclined angles are also fixed. It is impossible to adjust the angle of the same inclined surface, and it is impossible to accurately adjust the angle of this inclined surface, so the grinding angle requirements of various knives cannot be met.

[0003] Therefore, how to make the inclination angle of the inclined surface in the angle gauge adjustable becomes a technical problem to be solved.

[0004] Secondly, in the existing knife sharpener, a single rod body is installed on the sharpening rod, which only has one knife grinding function and has a single function. When other knife grinding functions are to be used, only the knife sharpener can be replaced, which is inconvenient for use and carrying. How to make the knife sharpener have multiple grinding functions (such as rough grinding, fine grinding, polishing, etc.) becomes a technical problem to be solved.

[0005] Thirdly, in the existing knife sharpener, the handle and the sharpening rod are integrated, with a large volume and can only be placed in a toolbox, which is inconvenient for portable storage or carrying. Therefore, how to reduce the volume of the knife sharpener, facilitate storage, and facilitate carrying becomes a technical problem to be solved.

[0006] Finally, in outdoor activities, users often need to twist arrowheads. The existing knife sharpener does not have the function of twisting arrowheads, and its function is too simplistic. Therefore, how to make the knife sharpener have the function of twisting arrowheads becomes a technical problem to be solved. Summary of the Invention

[0007] The purpose of the present invention is to provide an angle gauge with adjustable angle and a knife sharpener thereof, mainly to solve the following problems existing in the above-mentioned prior art: Problem 1: How to make the inclination angle of the inclined surface in the angle gauge adjustable; Problem 2: How to make the knife sharpener have multiple grinding functions (such as rough grinding, fine grinding, polishing, etc.); Problem 3: How to reduce the volume of the knife sharpener, facilitate storage, and facilitate carrying; Problem 4: How to make the knife sharpener have the function of twisting arrowheads; and to provide an angle gauge with adjustable angle and a knife sharpener thereof.

[0008] In order to achieve the above purpose, the technical solution adopted by the present invention is: an angle gauge with adjustable angle, characterized in that: the angle gauge includes at least one group of angle adjustment mechanisms, and each group of angle adjustment mechanisms includes a first bracket, a first inclined surface body, and an angle adjustment member. The first inclined surface body is provided with a first inclined surface for knife sharpening, and the angle adjustment member is provided with a second inclined surface;

[0009] The first inclined plane body is rotatably connected to the first bracket. By moving the angle adjusting member, one end of the first inclined plane body is lifted or lowered by the second inclined plane, thereby adjusting the inclination angle of the first inclined plane.

[0010] Furthermore, the angle gauge further includes a first angle adjustment knob. The angle adjusting member is a push tube. The first angle adjustment knob and the push tube are threadedly connected to achieve the axial movement of the push tube.

[0011] Furthermore, the push tube is provided with four second inclined planes, and each second inclined plane corresponds to a first inclined plane body. The four first inclined plane bodies are distributed around the first bracket.

[0012] Furthermore, the four first inclined plane bodies are all connected to the fourth elastic body.

[0013] Furthermore, the first bracket is provided with a plurality of first positioning grooves. The angle adjusting member is a push block. The push block is provided with an elastic pressing portion. The elastic pressing portion is connected to a bump. The bump is matched with the corresponding first positioning groove to achieve the positioning after the movement of the push block.

[0014] Furthermore, a second elastic body is provided between the push block and the elastic pressing portion;

[0015] and / or a plurality of first positioning grooves are arranged corresponding to the first marks;

[0016] and / or the first inclined plane body is provided with an extension portion. One end of the third elastic body is connected to the extension portion, and the other end of the third elastic body is connected to or abuts against the inner side wall of the first bracket;

[0017] and / or the first bracket is further provided with a hollow first guide groove, and the elastic pressing portion is embedded in the first guide groove.

[0018] Furthermore, the second inclined plane drives the bottom of the higher end of the first inclined plane in the first inclined plane body to be lifted or lowered, thereby adjusting the inclination angle of the first inclined plane;

[0019] and / or the connection portion between the first inclined plane body and the first bracket is close to the lower end of the first inclined plane;

[0020] and / or the inside of the first bracket is hollow. The first bracket is provided with a first installation groove. The first inclined plane body is connected to the first installation groove through a connecting shaft;

[0021] and / or the outer side surface of the push tube is provided with a first external thread. One end of the push tube corresponding to the second inclined plane is embedded in the first hollow portion of the first bracket. The second inclined plane corresponds to the first inclined plane body. The first angle adjustment knob is hollow inside and the inner side wall is provided with a first internal thread. The first angle adjustment knob is sleeved on the push tube, and the first internal thread and the first external thread are matched.

[0022] Further, a first elastic body for driving the first inclined body to reset is also provided between the first bracket and the first inclined body;

[0023] And / or the first bracket is also provided with a hollow first guide groove, and the push tube is also provided with a first protruding block. The first protruding block is embedded in the first guide groove, and as the push tube moves axially, the first protruding block moves synchronously in the first guide groove;

[0024] And / or a first identifier for displaying an angle value is also provided on the outer side wall of the first bracket on one side or both sides of the first guide groove;

[0025] And / or a second identifier for indicating the rotation direction of the first angle adjustment knob is provided near the first guide groove;

[0026] And / or the first bracket is provided with an indicating portion, and the outer side surface of the first angle adjustment knob is provided with a third identifier. The indicating portion and the third identifier cooperate to display the rotation direction and / or the rotation angle value of the first angle adjustment knob;

[0027] And / or the first inclined surface faces away from the push tube and the first bracket;

[0028] And / or the first elastic body and the push tube are respectively located on both sides of the connecting shaft;

[0029] And / or the top of the first bracket is provided with a first connection groove.

[0030] Further, the angle gauge includes two groups of angle adjustment mechanisms or three groups of angle adjustment mechanisms or five groups of angle adjustment mechanisms or six groups of angle adjustment mechanisms or eight groups of angle adjustment mechanisms.

[0031] A knife sharpener, characterized in that: the knife sharpener includes the above-mentioned angle gauge with adjustable angle, the first bracket is connected to the knife sharpening part, and the first inclined surface provides a sharpening angle for the tool to be sharpened on the knife sharpening part.

[0032] Further, the knife sharpening part includes a knife sharpening bracket and a knife sharpening rod. The knife sharpening bracket is provided with an opening groove for installing the knife sharpening rod, and the surface of the knife sharpening rod corresponding to the opening part of the opening groove is the sharpening surface; or the knife sharpening part is a single knife sharpening rod;

[0033] And / or a storage space for storing the knife sharpening rod and / or the taper rod is provided inside the knife sharpening bracket;

[0034] And / or the bottom end of the knife sharpening bracket is connected to the first bracket through a third connecting piece, and the top end of the knife sharpening bracket is provided with a third knob for pressing against the knife sharpening rod and / or the taper rod in the storage space;

[0035] And / or cowhide for knife sharpening is also provided on the outer side surface of the knife sharpening bracket.

[0036] Further, the cross-section of the knife sharpening bracket is hexagonal, with cowhide provided on two opposite sides respectively, and opening grooves provided at two corners away from the cowhide. The storage space inside the knife sharpening bracket is five storage holes. The storage hole at the middle part of the cross-section of the knife sharpening bracket is a taper rod storage hole. One end of the taper rod storage hole is connected to the third knob, and the other end of the taper rod storage hole is connected to the third connecting piece;

[0037] The third connecting piece is divided into a connecting section A and a connecting section B. The connecting section A is provided with a third hollow part, and the outer side surface of the connecting section A is provided with a third serrated part. The connecting section A is embedded into the other end of the taper rod storage hole to realize the connection between the third connecting piece and the knife sharpening bracket; or the outer side surface of the connecting section A is provided with an anti-detachment tooth shape, and the connecting section A is embedded into the other end of the taper rod storage hole to realize the connection between the third connecting piece and the knife sharpening bracket; or the connecting section A of the third connecting piece is in the shape of a round rod, and the outer side surface of the connecting section A is provided with a knurled part. After the connecting section A is embedded into the other end of the taper rod storage hole, the knurled part and the other end of the taper rod storage hole are in interference fit.

[0038] Further, a first knob is provided radially on the first bracket corresponding to the first connecting groove. The connecting section B is provided with a radial third mounting hole and a third axial hole for mounting a metal insert. After the connecting section B is embedded into the first connecting groove, the third mounting hole is matched with the first knob to realize the connection between the third connecting piece and the first bracket;

[0039] And / or a first limiting groove is further provided at the top of the first bracket. A third limiting protrusion for abutting against the knife sharpening rod and / or the taper rod in the storage hole is provided at the connection between the connecting section A and the connecting section B, and the third limiting protrusion is matched with the first limiting groove; or a gasket for abutting against the knife sharpening rod in the storage hole is provided at the connection between the connecting section A and the connecting section B;

[0040] And / or the outer side surface of the connecting section B is provided with a positioning surface B, and the inner side wall of the first connecting groove is provided with a positioning surface A, and the positioning surface A and the positioning surface B are matched;

[0041] And / or the first knob includes a first knob cover and a screw rod. One end of the screw rod is connected to the first knob cover. The outer side wall of the first knob cover is provided with a second external thread. The inner side wall of the first through hole on the first bracket for mounting the first knob is provided with a second internal thread. At this time, the second external thread and the second internal thread are matched, and a second limiting part is further provided on the screw rod between the second external thread and the first knob cover;

[0042] And / or two groups of first mounting grooves, first inclined surfaces, a first guide groove and a first knob are respectively provided around the first bracket. The two first inclined surfaces are opposite to each other and respectively correspond to the opening grooves on the knife sharpening bracket, and the first guide groove and the first knob are opposite to each other and respectively correspond to the cowhide on the knife sharpening bracket; One side of the first bracket corresponding to the first mounting groove is a fourth inclined surface;

[0043] and / or the outer side surface of the first button cover is provided with a second anti-slip part;

[0044] and / or a third buffer part for abutting against the sharpening rod is provided at the connection part between the connection section A and the connection section B of the third connecting part;

[0045] and / or the connection section A is further provided with a third through hole;

[0046] and / or the knurled part is located at a position on the connection section A close to the connection section B.

[0047] Furthermore, a fourth internal thread is provided in the first connection groove, and a fourth external thread is provided on the outer side surface of the connection section B of the third connecting part. The fourth internal thread and the fourth external thread are matched to realize the connection between the first bracket and the third connecting part;

[0048] and / or the third button cover of the third knob is in the shape of a truncated cone, the outer side surface of the third button cover is provided with a third anti-slip part, and the top end of the third button cover is provided with a fourth anti-slip part, and the fourth anti-slip part includes a plurality of annular anti-slip lines;

[0049] and / or the first inclined surface of the first inclined body is provided with a third guiding part;

[0050] and / or the outer side surface of the first angle adjustment knob is provided with a first anti-slip part;

[0051] and / or a reserved gap is provided between the third button cover and the top end of the sharpening bracket, and a first buffer part is provided in the reserved gap;

[0052] and / or the bottom of the first bracket is provided with a first convex part, and the first convex part is embedded in the inner side wall of the top of the first angle adjustment knob;

[0053] and / or a second buffer part is further added between the connection section A of the third connecting part and the taper rod;

[0054] and / or the inner side wall of the bottom of the handle corresponding to the fourth through hole is an arc surface;

[0055] and / or the side of the arrow-twisting tooth facing the inside of the handle is provided with a fourth protruding part.

[0056] Furthermore, the first bracket is connected to one end of the handle;

[0057] and / or the inside of the handle is hollow to form a fourth storage space for storing the sharpening part;

[0058] and / or the other end of the handle is connected to a tail cover, and the tail cover is provided with a plurality of arrow-twisting teeth, and the arrow-twisting teeth form a fourth hollow part for twisting the arrowhead;

[0059] And / or, a fourth mounting hole for mounting a hand rope is provided at the other end of the handle, and a fifth mounting hole corresponding to the fourth mounting hole is provided on the end cap. A tortuous channel communicates between the fifth mounting hole and the fourth hollow portion;

[0060] And / or, the end cap is provided with a fourth buckle, and a fourth perforation is provided at the other end of the handle. The fourth buckle and the fourth perforation are matched to realize the detachable connection between the handle and the end cap;

[0061] And / or, the end cap is provided with a second positioning protrusion, and a second positioning groove is provided at the other end of the handle. The second positioning protrusion and the second positioning groove are matched;

[0062] And / or, a second limiting block is provided on the outer side surface of the other end of the handle, and a second limiting groove is provided on the inner side wall of the end cap. The second limiting block and the second limiting groove are matched;

[0063] And / or, the arc length of the cross-section of the opening portion is less than or equal to one-half of the circumference of the circle where the cross-section of the opening groove is located;

[0064] The knife sharpening portion further includes a tapered rod, and a hook sharpening groove for sharpening a fishhook is provided on the tapered rod. The thicker end of the tapered rod and the hook sharpening groove are an extension section. After the tapered rod is connected to the first bracket, a part of the extension section is located outside the first bracket;

[0065] And / or, the first mounting groove communicates inside and outside the first bracket;

[0066] And / or, the top of the first angle adjustment knob abuts against the bottom of the first bracket, and the bottom of the first angle adjustment knob abuts against the handle;

[0067] And / or, the bottom of the push tube is axially limited by the handle;

[0068] And / or, the metal insert is an iron shaft or a stainless steel shaft;

[0069] And / or, the first connection groove is located on the axis of the first bracket;

[0070] And / or, one end of the first connection groove of the first bracket is connected to a third connecting member, and the other end of the first connection groove is connected to a threaded sleeve insert. The threaded sleeve insert is connected to one end of the handle through a bolt member;

[0071] And / or, the thicker end of the tapered rod is provided with a third external thread, and the third external thread is matched with the third internal thread of the threaded sleeve insert to realize the connection between the tapered rod and the first bracket;

[0072] And / or, a third inclined surface is provided at the position corresponding to the top of the first guide groove on the first bracket;

[0073] And / or, a reinforcing rib is further provided on the inner side wall of the handle, and a third positioning concave portion is provided on the outer side wall of the knife sharpening bracket. The reinforcing rib and the third positioning concave portion are matched;

[0074] And / or the sharpening rod is a hollow rod.

[0075] In view of the above technical features, the present invention has the following beneficial effects:

[0076] 1. The present invention provides an angle-adjustable angle gauge, a first bracket, a first bevel body and an angle adjusting member, wherein the first bevel body is provided with a first inclined surface for tool sharpening, and the angle adjusting member is provided with a second inclined surface. By moving the angle adjusting member, the second inclined surface drives the bottom of the higher end of the first inclined surface in the first bevel body to rise or fall, and the inclination angle of the first inclined surface is adjusted. Various angle requirements are provided for various tool sharpening, and there is no need to replace the angle gauge or the sharpener as a whole to meet various tool sharpening requirements, thereby saving costs. The inclination angle of the first inclined surface can be adjusted by simply moving the angle adjusting member, and the use is simple and convenient.

[0077] 2. The angle gauge of the present invention can adjust the angle. Through the design of the first bevel body, the first angle adjustment knob, the push tube, and the first bracket, the first angle adjustment knob is rotated to drive the push tube to move axially, and the push tube lifts the first bevel body to adjust the inclination angle of the first inclined surface, so as to meet various angle requirements for various tool grinding. There is no need to replace the angle gauge or the sharpener as a whole to meet various tool grinding requirements, which saves costs. The inclination angle of the first inclined surface can be adjusted by rotating the first angle adjustment knob, which is simple and convenient to use.

[0078] 3. When the first inclined surface needs to be gradually reset (i.e., the first inclined surface angle is lowered), the first angle adjustment knob is rotated, and the elastic member helps the first inclined surface to automatically retract until it is reset, without the need for additional operation by the user, and the design is exquisite.

[0079] 4. The storage space inside the knife sharpening bracket can store spare knife sharpening rods and cone rods. By simply replacing knife sharpening rods with different functions in the open slot, different purposes such as coarse grinding and fine grinding can be achieved to meet various knife sharpening needs, so that the knife sharpener can have multiple grinding functions (such as coarse grinding, fine grinding, polishing, etc.).

[0080] 5. The two ends of the storage hole are supported by the third knob and the third connecting piece to support the sharpening rod and the cone rod in the storage hole. The third connecting piece is also used to connect the sharpening bracket and the first bracket. It has multiple uses and is cleverly designed.

[0081] 6. After the sharpening rod is installed in the opening slot of the sharpening bracket, the tool can be sharpened. After unscrewing the third knob, the sharpening rod in the opening slot is rotated so that different surfaces of the sharpening rod can be used to sharpen the tool, thereby improving the use efficiency of the sharpening rod.

[0082] 7. The handle and the knife sharpening part are detachably connected. The inside of the handle is hollow and used for storing the knife sharpening bracket, its sharpening rod, etc. Overall, it reduces the volume of the knife sharpener, is convenient to carry, and also protects the knife sharpening bracket, its sharpening rod, etc.

[0083] 8. A hand rope is provided at the bottom of the handle. The hand rope facilitates carrying the knife sharpener. The end cap at the bottom of the handle is also provided with a fourth hollow part for screwing the arrow head, enabling the knife sharpener to have the function of screwing the arrow head, expanding the usage scenarios of the knife sharpener, enriching the overall usage purposes of the knife sharpener, and being more suitable for field use. Description of the Drawings

[0084] Figure 1 is the structural schematic diagram of an angle gauge with adjustable angle in Specific Embodiment 1 Figure 1 ;

[0085] Figure 2 is the structural schematic diagram of an angle gauge with adjustable angle in Specific Embodiment 1 Figure 2 ;

[0086] Figure 3 is the structural schematic diagram of the first bracket in Specific Embodiment 1 Figure 1 ;

[0087] Figure 4 is the top view of the first bracket in Specific Embodiment 1;

[0088] Figure 5 is the structural schematic diagram of the first angle adjustment knob in Specific Embodiment 1;

[0089] Figure 6 is the structural schematic diagram of the push tube in Specific Embodiment 1;

[0090] Figure 7 is the top view of the push tube in Specific Embodiment 1;

[0091] Figure 8 is the structural schematic diagram of the first inclined plane body in Specific Embodiment 1;

[0092] Figure 9 is the cross-section after the connection of the first bracket, the first inclined plane body, the push tube and the first angle adjustment knob in Specific Embodiment 1 Figure 1 (The first inclined plane body is not lifted);

[0093] Figure 10 is the cross-section after the connection of the first bracket, the first inclined plane body, the push tube and the first angle adjustment knob in Specific Embodiment 1 Figure 2 (The first inclined plane body is lifted);

[0094] Figure 11 is the structural schematic diagram of the first bracket in Specific Embodiment 1 (with the first convex platform part);

[0095] Figure 12 It is a schematic structural view of an angle gauge with adjustable angle in Specific Embodiment 3 Figure 6 (After the first inclined plane body is lifted);

[0096] Figure 13 It is a schematic structural view of an angle gauge with adjustable angle in Specific Embodiment 3 Figure 3 (The first inclined plane body is not lifted);

[0097] Figure 14 It is a schematic structural view of an angle gauge with adjustable angle in Specific Embodiment 3 Figure 4 ;

[0098] Figure 15 Schematic structural view of an angle gauge with adjustable angle in Specific Embodiment 3 Figure 5 ;

[0099] Figure 16 It is a schematic structural view of an angle gauge with adjustable angle in Specific Embodiment 5 Figure 1 ;

[0100] Figure 17 It is a schematic structural view of an angle gauge with adjustable angle in Specific Embodiment 5 Figure 2 ;

[0101] Figure 18 It is a schematic structural view of the first support in Specific Embodiment 5 Figure 1 ;

[0102] Figure 19 It is a top view of the first support in Specific Embodiment 5;

[0103] Figure 20 It is a schematic structural view of the first angle adjustment knob in Specific Embodiment 5;

[0104] Figure 21 It is a schematic structural view of the push tube in Specific Embodiment 5;

[0105] Figure 22 It is a top view of the push tube in Specific Embodiment 5;

[0106] Figure 23 It is a schematic structural view of the first inclined plane body in Specific Embodiment 5;

[0107] Figure 24 It is a cross-section after connection of the first support, the first inclined plane body, the push tube and the first angle adjustment knob in Specific Embodiment 5 Figure 1 (The first inclined plane body is not lifted);

[0108] Figure 25 It is a cross-section after connection of the first support, the first inclined plane body, the push tube and the first angle adjustment knob in Specific Embodiment 5Figure 2 (The first inclined plane body is lifted);

[0109] Figure 26 It is a schematic structural diagram of the connection of the first bracket, the fourth elastic body and the four first inclined plane bodies in Specific Embodiment 5;

[0110] Figure 27 It is an installation structure diagram of an angle gauge, a handle and a sharpening rod with adjustable angles in Specific Embodiment 5 (the first inclined plane body is not lifted);

[0111] Figure 28 It is an installation structure diagram of an angle gauge, a handle and a sharpening rod with adjustable angles in Specific Embodiment 5 (the first inclined plane body is lifted);

[0112] Figure 29 It is a three-dimensional view of a sharpener in Specific Embodiment 8 Figure 1 (The first inclined plane body is not lifted);

[0113] Figure 30 It is a three-dimensional view of a sharpener in Specific Embodiment 8 Figure 2 (The first inclined plane body is lifted);

[0114] Figure 31 It is a three-dimensional view of a sharpener in Specific Embodiment 8 Figure 3 (The first inclined plane body is lifted);

[0115] Figure 32 It is a sectional view of a sharpener in Specific Embodiment 8 Figure 1 ;

[0116] Figure 33 It is Figure 32 a partial enlarged view;

[0117] Figure 34 It is a right view of the structural schematic diagram of the sharpening bracket in Specific Embodiment 8 (the sharpening rod is not installed);

[0118] Figure 35 It is Figure 34 the sectional view of F-F in;

[0119] Figure 36 It is the structural schematic of the sharpening bracket in Specific Embodiment 8 Figure 1 (The sharpening rod and the third knob are installed);

[0120] Figure 37 It is the structural schematic after the installation of the third knob and the sharpening bracket in Specific Embodiment 8 Figure 1 (The third knob is in the shape of a frustum of a cone);

[0121] Figure 38It is a schematic diagram of the structure after the installation of the third knob and the knife sharpening bracket in Specific Embodiment 8 Figure 2 (Showing the reserved gap, and the first buffer part is filled in the reserved gap);

[0122] Figure 39 It is a schematic diagram of the structure of the knife sharpening bracket in Specific Embodiment 8 Figure 2 (The knife sharpening rod is not installed);

[0123] Figure 40 It is a schematic diagram of the structure of the knife sharpening bracket in Specific Embodiment 8 Figure 3 (The knife sharpening rod is not installed);

[0124] Figure 41 It is the state after the installation of the third connecting piece and the knife sharpening bracket in Specific Embodiment 8 Figure 1 (The knife sharpening bracket is hidden);

[0125] Figure 42 It is a schematic diagram of the structure of the third connecting piece in Specific Embodiment 8 Figure 1 ;

[0126] Figure 43 It is a schematic diagram of the structure of the handle in Specific Embodiment 8 Figure 1 (Excluding the end cap);

[0127] Figure 44 It is a schematic diagram of the structure of the handle in Specific Embodiment 8 Figure 2 (Excluding the end cap);

[0128] Figure 45 It is a schematic diagram of the structure of the end cap in Specific Embodiment 8 Figure 1 ;

[0129] Figure 46 It is a schematic diagram of the structure of the end cap in Specific Embodiment 8 Figure 2 ;

[0130] Figure 47 It is a three-dimensional view of a knife sharpener in Specific Embodiment 8 Figure 4 (The knife sharpening bracket is stored in the handle);

[0131] Figure 48 It is a three-dimensional view of a knife sharpener in Specific Embodiment 8 Figure 5 (The knife sharpening bracket is stored in the handle);

[0132] Figure 49 It is a sectional view of a knife sharpener in Specific Embodiment 8 Figure 2 (The knife sharpening bracket is stored in the handle);

[0133] Figure 50 It is a partial enlarged view of a knife sharpener in Specific Embodiment 8 (the knife sharpening bracket is stored in the handle);

[0134] Figure 51 It is a schematic structural diagram of a knife sharpener in Specific Embodiment 8 (installing a tapered rod);

[0135] Figure 52 It is a schematic structural diagram of the tapered rod in Specific Embodiment 8;

[0136] Figure 53 It is a three-dimensional view of a knife sharpener in Specific Embodiment 9 Figure 6 ;

[0137] Figure 54 It is a sectional view of a knife sharpener in Specific Embodiment 9 Figure 3 ;

[0138] Figure 55 It is a schematic structural diagram of an angle gauge with adjustable angle in Specific Embodiment 9 Figure 7 ;

[0139] Figure 56 It is a schematic structural diagram of an angle gauge with adjustable angle in Specific Embodiment 9 Figure 8 ;

[0140] Figure 57 It is a schematic structural diagram of the first bracket in Specific Embodiment 9 Figure 2 ;

[0141] Figure 58 It is a sectional view after connection of the first bracket, the first inclined plane body, the push tube and the first angle adjustment knob in Specific Embodiment 9 Figure 3 (The first inclined plane body is not lifted);

[0142] Figure 59 It is a sectional view after connection of the first bracket, the first inclined plane body, the push tube and the first angle adjustment knob in Specific Embodiment 9 Figure 4 (The first inclined plane body is lifted);

[0143] Figure 60 It is a schematic structural diagram of the first knob in Specific Embodiment 9;

[0144] Figure 61 It is an installation schematic diagram of the third connecting piece and the first bracket in Specific Embodiment 9;

[0145] Figure 62 It is a sectional view of the third connecting piece and the first bracket in Specific Embodiment 9 (showing the third buffer part);

[0146] Figure 63 It is a schematic structural diagram of the third connecting piece in Specific Embodiment 9 Figure 2 ;

[0147] Figure 64 It is a schematic structural diagram of the third connecting piece in Specific Embodiment 9 Figure 2 ;

[0148] Figure 65 Schematic structure of the third connecting member in Specific Embodiment 9 Figure 4 ;

[0149] Figure 66 is the state after the third connecting member is installed on the knife sharpening bracket in Specific Embodiment 10 Figure 2 (Hide the knife sharpening bracket);

[0150] In the figure: 1. First bracket; 1-1. First installation groove; 1-2. First hollow part; 1-3. Connecting shaft; 1-4. First elastic body; 1-5. First guide groove; 1-6. First mark; 1-7. First knob; 1-7-1. Second external thread; 1-7-2. Second limiting part; 1-7-3. First button cover; 1-7-4. Screw rod; 1-7-5. Second anti-slip part; 1-8. Second mark; 1-9. Third inclined surface; 1-10. First limiting groove; 1-11. First through hole; 1-11-1. Second internal thread; 1-12. Fourth inclined surface; 1-13. First connecting groove; 1-13-1. Positioning surface A; 1-13-2. Fourth internal thread; 1-14. First positioning groove; 1-15. First convex part; 1-16. Indicator part

[0151] 2. First bevel body; 2-1. First inclined surface; 2-1-1. Higher end of the first inclined surface; 2-1-2. Lower end of the first inclined surface; 2-1-3. Third guiding part; 2-3. Shaft installation hole; 2-4. Extension part; 2-5. Hook

[0152] 3. Push tube; 3-1. Second inclined surface; 3-2. First external thread; 3-3. First protruding block; 30. Push block; 30-1. Elastic pressing part; 30-2. Convex point; 30-3. Second elastic body; 30-4. Third elastic body

[0153] 4. First angle adjustment knob; 4-1. First anti-slip part; 4-2. First internal thread; 4-3. Third mark

[0154] 5. Knife sharpening bracket; 5-1. Open slot; 5-1-1. Opening part; 5-2. Storage hole; 5-2-1. Taper rod storage hole; 5-3. Third knob; 5-3-1. Third button cover; 5-3-2. Third anti-slip part; 5-3-3. Fourth anti-slip part; 5-4. Reserved gap; 5-4-1. First buffer part; 5-4-2. Second buffer part; 5-5. Third positioning concave part

[0155] 6. Third connecting piece; 6-1. Connecting section A; 6-1-1. Third hollow part; 6-1-2. Third serrated part; 6-1-3. Anti-detachment tooth shape; 6-1-4. Knurled part; 6-1-5. Third through hole; 6-2. Connecting section B; 6-2-1. Third axial hole; 6-2-2. Third mounting hole; 6-2-3. Positioning surface B; 6-2-4. Fourth external thread; 6-3. Metal insert; 6-4. Third limiting protrusion; 6-5. Gasket; 6-6. Third buffer part;

[0156] 7. Handle; 7-1. Fourth storage space; 7-2. Tail cap; 7-2-1. Fourth hollow part; 7-2-2. Fifth mounting hole; 7-2-3. Zigzag channel; 7-2-4. Second positioning protrusion; 7-2-5. Second limiting groove; 7-2-6. Fourth buckle; 7-2-7. Arrow-twisting tooth; 7-2-8. Fourth protrusion; 7-4. Fourth mounting hole; 7-5. Second positioning groove; 7-6. Second limiting block; 7-7. Fourth through hole; 7-7-1. Inner side wall of the bottom of the handle; 7-8. Fourth boss part; 7-9. Reinforcing rib;

[0157] 8-1. Knife sharpener rod; 8-1-1. Knife sharpening surface; 8-2. Cowhide; 8-3. Tapered rod; 8-3-1. Grinding hook groove; 8-3-2. Extension section; 8-3-3. Third external thread;

[0158] 9. Thread sleeve insert; 9-1. Third internal thread;

[0159] 10. Fourth elastomer. Detailed implementation manners

[0160] The present invention will be further described below in conjunction with the detailed implementation manners. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0161] Refer to Figures 1 to 11 , in specific embodiment 1, this embodiment 1 provides an adjustable-angle protractor, which includes at least one set of angle adjustment mechanisms. Each set of angle adjustment mechanisms includes a first bracket 1, a first inclined plane body 2, a push tube 3 and a first angle adjustment knob 4. The first inclined plane body 2 is provided with a first inclined surface 2-1 for sharpening a tool. The so-called "first inclined surface 2-1 for sharpening a tool" means that the first inclined surface 2-1 provides an initial angle for the tool, facilitating the tool to maintain an accurate angle for grinding on the knife sharpener rod 8-1 and improving the tool grinding effect. The push tube 3 is provided with a second inclined surface 3-1.

[0162] The first inclined plane body 2 is reversibly connected to the first support 1. The reversible connection can be, for example, a shaft connection or a hinge connection, as long as the inclination angle of the first inclined plane 2-1 in the first inclined plane body 2 can be changed or adjusted.

[0163] The first angle adjustment knob 4 and the push tube 3 are threadedly connected to achieve the axial movement of the push tube 3. The second inclined plane 3-1 drives the bottom of the higher end 2-1-1 of the first inclined plane 2-1 in the first inclined plane body 2 to rise or fall, which can more efficiently lift the higher end 2-1-1 of the first inclined plane 2-1 and adjust the inclination angle of the first inclined plane 2-1, providing different initial angles for the tool during the grinding process and meeting the angle requirements for grinding various tools. The higher end 2-1-1 of the first inclined plane generally refers to the end of the first inclined plane 2-1 far from the grinding part (i.e., the horizontal line where the grinding rod 8-1 is located). The lower end 2-1-2 of the first inclined plane generally refers to the end of the first inclined plane 2-1 close to the grinding part (i.e., the horizontal line where the grinding rod 8-1 is located).

[0164] The connection between the first inclined plane body 2 and the first support 1 is close to the lower end 2-1-2 of the first inclined plane. This not only ensures the reversible connection between the first inclined plane body 2 and the first support 1 but also makes the angle adjustment of the first inclined plane 2-1 more efficient and convenient. That is, based on the original angle of the first inclined plane 2-1 itself (for example, 15°, and the original angle value can be adjusted according to actual needs), when the push tube 3 moves forward (i.e., the push tube 3 moves axially towards the first inclined plane body 2), the second inclined plane 3-1 raises the bottom of the higher end 2-1-1 of the first inclined plane 2-1, quickly increasing the inclination angle of the first inclined plane 2-1 (for example, in the range of 15° to 30°, and the inclination angle adjustment range of the first inclined plane 2-1 can also be expanded according to actual needs). When the push tube 3 moves backward (i.e., the push tube 3 moves axially away from the first inclined plane body 2), as the second inclined plane 3-1 gradually returns to its original position, the bottom of the higher end 2-1-1 of the first inclined plane 2-1 gradually drops, and the angle of the first inclined plane 2-1 gradually returns to the original angle. The inclination angle adjustment process of the first inclined plane 2-1 is more convenient and efficient, improving the use comfort. For example, the first inclined plane body 2 is in the shape of a wedge or a wedge-shaped body.

[0165] The first bracket 1 is hollow inside, and the hollow part can be used to sleeve the push tube 3, so that the push tube 3 can achieve axial movement inside the first bracket 1, thereby lifting the first inclined body 2 connected in the first installation groove 1-1. The first bracket 1 sleeved on the push tube 3 also realizes the radial limit of the push tube 3, ensuring that the threaded connection between the push tube 3 and the first angle adjustment knob 4 is more stable and not easy to disengage. The first bracket 1 is provided with a first installation groove 1-1. The first inclined body 2 and the first installation groove 1-1 are connected by a connecting shaft 1-3 (that is, the shaft installation hole 2-3 of the first inclined body 2 is connected to the first bracket 1 through the connecting shaft 1-3, and the connection position between the two is also called the connection part of the first inclined body 2 and the first bracket 1). The first installation groove 1-1 communicates with the inside and outside of the first bracket 1, providing space for the flipping of the first inclined body 2, making more reasonable use of the internal space of the first bracket 1. At the same time, the first installation groove 1-1 limits the first inclined body 2 and the first inclined surface 2-1 at the position corresponding to the grinding part or the grinding rod 8-1. Finally, the adjustment effect of the inclination angle of the first inclined surface 2-1 acts on the tool, providing an accurate grinding angle for tool grinding.

[0166] In this Embodiment 1, the outer side surface of the push tube 3 is provided with a first external thread 3-2. One end of the push tube 3 corresponding to the second inclined surface 3-1 is embedded in the first hollow part 1-2 of the first bracket 1. The second inclined surface 3-1 corresponds to the first inclined body 2, that is, the second inclined surface 3-1 faces the first inclined body 2. The inclination angle of the second inclined surface 3-1 is used to gradually adjust the inclination angle of the first inclined surface 2-1 in the first inclined body 2. The first angle adjustment knob 4 is hollow inside and the inner side wall is provided with a first internal thread 4-2. The first angle adjustment knob 4 sleeves the push tube 3, and the first internal thread 4-2 and the first external thread 3-2 are matched. The top of the first angle adjustment knob 4 abuts against the bottom of the first bracket 1, and the first bracket 1 limits the top of the first angle adjustment knob 4. The first angle adjustment knob 4 drives the push tube 3 to achieve axial movement through threaded connection. For example, the bottom of the first bracket 1 is provided with a first boss part 1-15, and the first boss part 1-15 is embedded in the inner side wall of the top of the first angle adjustment knob 4 to achieve the radial limit effect between the first bracket 1 and the first angle adjustment knob 4.

[0167] The first bracket 1 is also provided with a hollow first guide groove 1-5, and the push tube 3 is also provided with a first protruding block 3-3. The first protruding block 3-3 is embedded in the first guide groove 1-5. As the push tube 3 moves axially, the first protruding block 3-3 moves synchronously in the first guide groove 1-5. On the outer side walls of the first bracket 1 on both sides of the first guide groove 1-5, there are also first markings 1-6 for displaying angle values. The inclination angle of the first inclined surface 2-1 can be infinitely adjusted or changed. The first markings 1-6 mainly mark the key angle values. That is to say, the first protruding block 3-3 cooperating with the first markings 1-6 can reflect the change of the inclination angle of the first inclined surface 2-1 in real time (such as after the second inclined surface 3-1 of the push tube 3 lifts the first inclined body 2), helping the user to more accurately adjust the inclination angle of the first inclined surface 2-1. In addition, the movement of the first protruding block 3-3 by the first guide groove 1-5 not only plays a limiting role to ensure that the push tube 3 moves along the axial direction and indirectly avoids the circumferential rotation of the push tube 3, but also can limit the up and down movement of the first protruding block 3-3, and thus indirectly limit the axial movement distance of the push tube 3, that is, the axial limit of the push tube 3, to ensure that the first external thread 3-2 and the first internal thread 4-2 between the push tube 3 and the first angle adjustment knob 4 always remain in a connected state and will not cause the disengagement of the two threads due to excessive rotation, facilitating the subsequent repeated use of the first angle adjustment knob 4 and enabling the push tube 3 to move axially back and forth, so that the angle gauge with adjustable angle is always in a good working state.

[0168] Near the first guide groove 1-5, there is a second marking 1-8 for indicating the rotation direction of the first angle adjustment knob 4, that is, to indicate to the user the rotation direction of the first angle adjustment knob 4 corresponding to the increase in the inclination angle of the first inclined surface 2-1 and the rotation direction of the first angle adjustment knob 4 corresponding to the decrease in the inclination angle of the first inclined surface 2-1, improving the convenience of use and enhancing the comfort of use.

[0169] A first elastic body 1-4 (such as a U-shaped elastic piece) for driving the first inclined body 2 to reset is further provided between the first support 1 and the first inclined body 2. The first elastic body 1-4 and the push tube 3 are respectively located on both sides of the connecting shaft 1-3. When the push tube 3 axially moves towards the first inclined body 2 (i.e., moves forward), the second inclined surface 3-1 gradually advances, and the bottom of the higher end 2-1-1 of the first inclined surface in the first inclined body 2 is gradually lifted by the second inclined surface 3-1. At this time, the first inclined body 2 rotates around the connecting shaft 1-3, increasing the inclination angle of the first inclined surface 2-1. At the same time, the bottom of the lower end 2-1-2 of the first inclined surface compresses the first elastic body 1-4 or further compresses the first elastic body 1-4. When the push tube 3 axially moves away from the first inclined body 2 (i.e., moves backward), the second inclined surface 3-1 gradually retreats. At this time, the first elastic body 1-4 pushes the bottom of the lower end 2-1-2 of the first inclined surface, and the first inclined body 2 rotates reversely around the connecting shaft 1-3. The bottom of the higher end 2-1-1 of the first inclined surface presses down and gradually descends along the second inclined surface 3-1 until it resets (i.e., the bottom of the higher end of the first inclined body 2 slides to the bottom, and at this time, the inclination angle of the first inclined surface 2-1 is its original inclination angle), achieving the effect of automatically resetting the first inclined surface 2-1 and automatically retracting the first inclined body 2 into the first installation groove 1-1.

[0170] In this Embodiment 1, the first inclined surface 2-1 faces away from the push tube 3, which is convenient for the axial movement of the push tube 3 to adjust the inclination angle of the first inclined surface 2-1. The first inclined surface 2-1 faces away from the first support 1, which is convenient for grinding the tool using the first inclined surface 2-1. Generally, the lower end 2-1-2 of the first inclined surface faces the tool grinding part, which is convenient for jointly achieving precise grinding of the tool blade using the first inclined surface 2-1 and the tool grinding part.

[0171] The angle gauge with adjustable angle in this Embodiment 1 can meet the grinding requirements of different types of tools by adjusting the inclination angle of the first inclined surface 2-1. It is applicable to most tools, greatly expanding the applicable range of tool grinding. There is no need to replace other angle gauges with fixed angle values as in the prior art, saving costs and being more convenient and comfortable to use.

[0172] In addition, the inclination angle of the first inclined surface 2-1 can theoretically be adjusted infinitely. For example, any angle within the range of 15° to 30° can be achieved. Of course, the angle range of 15° to 30° can also be adjusted according to the actual situation.

[0173] In this Embodiment 1, taking two sets of angle adjustment mechanisms as an example, two sets of first mounting grooves 1-1, first inclined planes 2, and one first guide groove 1-5 are respectively arranged around the first bracket 1. The two first inclined planes 2 face each other in pairs and respectively correspond to the opening grooves 5-1 on the knife grinding bracket 5 (that is, each first inclined plane 2 corresponds to one opening groove 5-1), and the first guide groove 1-5 corresponds to a cowhide 8-2 for knife grinding.

[0174] On one side of the first bracket 1 corresponding to the first mounting groove 1-1 is a fourth inclined plane 1-12, and the inclination angle of the fourth inclined plane 1-12 is the same as the inclination angle of the first inclined plane 2-1. When the first inclined plane 2 reaches the lowest position, that is, when the second inclined plane 3-1 leaves the bottom of the first inclined plane 2, at this time, the inclination angle of the first inclined plane 2-1 is the angle of the first inclined plane 2 itself, that is, the unadjusted angle. At this time, the first inclined plane 2-1 and the fourth inclined plane 1-12 are flush, and the two are on the same plane, making the appearance more beautiful. The first inclined plane 2 is also completely received in the first mounting groove 1-1. When the inclination angle of the first inclined plane 2-1 needs to be adjusted, one end of the first inclined plane 2 will be gradually lifted, and one end of the first inclined plane 2 slowly protrudes from the fourth inclined plane 1-12. At this time, the fourth inclined plane 1-12 will not cause any interference to the inclination angle of the first inclined plane 2-1 before and after. According to the actual situation, the inclination angle of the fourth inclined plane 1-12 and the inclination angle of the first inclined plane 2-1 (that is, the angle of the top included angle of the first inclined plane 2) may also be different.

[0175] At the position corresponding to the top of the first guide groove 1-5 on the first bracket 1, there is a third inclined plane 1-9. The third inclined plane 1-9 provides an initial angle for the tool to be ground on the cowhide 8-2. For example, the angle of the third inclined plane 1-9 is 20°, and the angle of the third inclined plane 1-9 is not adjustable.

[0176] In this Embodiment 1, for the angle gauge with adjustable angle, as long as the first angle adjustment knob 4 is rotated, the inclination angle of the first inclined plane 2-1 can be arbitrarily adjusted to provide a knife grinding angle for various tools. This angle gauge can be connected to the knife grinding rod part of any knife grinder and cooperate with the knife grinding rod to complete the grinding of various tools. It has a wide range of uses, and the initial angles provided by the angle gauge are all adjustable.

[0177] The angle gauge with adjustable angle can be used alone. For example, the angle gauge is placed on the knife grinding surface of a knife grinding stone (ceramic plate, diamond plate or other knife grinding tools), and it is a tool that provides an initial knife grinding angle through an inclined plane (such as the first inclined plane 2-1). Also, according to actual needs, the inclination angle of the first inclined plane 2-1 can be adjusted.

[0178] See Figure 1 、 2 and Figure 5, Specific Embodiment 2. This embodiment 2 provides an angle gauge with adjustable angle. The difference between this embodiment 2 and embodiment 1 is that the outer side of the first angle adjustment knob 4 is provided with a first anti-slip portion 4-1. The first anti-slip portion 4-1 is, for example, a mesh anti-slip pattern, which is more suitable for manual screwing. The first angle adjustment knob 4 can be made of metal and has a good texture.

[0179] The first inclined surface 2-1 of the first inclined body 2 is provided with a third guiding portion 2-1-3. For example, the third guiding portion 2-1-3 is formed by two linear grooves. For example, when the first bracket 1 and the third connecting member 6 are fixedly connected by threading, when the third connecting member 6 is tightened, when the third guiding portion 2-1-3 aligns with both ends of the opening slot 5-1 of the grinding tool bracket 5 or the outer circle of the grinding rod 8-1, it means that the installation position of the grinding tool bracket 5 and the first bracket 1 is accurate and has been installed in place.

[0180] See Figures 12 to 15 , Specific Embodiment 3. This embodiment 3 provides an angle gauge with adjustable angle. The difference between this embodiment 3 and the foregoing embodiments is that the angle gauge includes a first bracket 1, a first inclined body 2, and an angle adjustment member. The first inclined body 2 is provided with a first inclined surface 2-1 for sharpening a tool, and the angle adjustment member is provided with a second inclined surface 3-1; the first inclined body 2 is rotatably connected to the first bracket 1. By moving the angle adjustment member, the second inclined surface 3-1 drives the bottom of the higher end 2-1-1 of the first inclined surface in the first inclined body 2 to rise or fall, thereby adjusting the inclination angle of the first inclined surface 2-1.

[0181] The first bracket 1 is provided with a plurality of first positioning grooves 1-14. The angle adjustment member is a push block 30. The push block 30 is provided with an elastic pressing portion 30-1. The elastic pressing portion 30-1 is connected to a bump 30-2 (or also called a clamping point). The bump 30-2 matches the corresponding first positioning groove 1-14 to achieve the positioning of the push block 30 after movement. A second elastic body 30-3, such as a spring, is provided between the push block 30 and the elastic pressing portion 30-1.

[0182] The first bracket 1 is further provided with a hollow first guide groove 1-5. The elastic pressing portion 30-1 is embedded in the first guide groove 1-5. When the elastic pressing portion 30-1 drives the push block 30 to move, the elastic pressing portion 30-1 synchronously moves along the first guide groove 1-5. At this time, the first guide groove 1-5 plays a role in limiting the movement track of the elastic pressing portion 30-1.

[0183] As the pushing block 30 moves, the first protruding block 3-3 moves synchronously within the first guide groove 1-5; on the outer side wall of the first support 1 on one or both sides of the first guide groove 1-5, there is also a first identifier 1-6 for displaying the angle value, and several first positioning grooves 1-14 are arranged corresponding to the first identifier 1-6. For example, several first positioning grooves 1-14 correspond to different angles of the first identifier 1-6. When the bump 302 is embedded in different first positioning grooves 1-14, the pushing block 30 also moves synchronously to different positions, adjusting the first inclined surface 2-1 to achieve different inclination angles. At this time, the position of the elastic pressing portion 30-1 also corresponds to the corresponding angle value of the first identifier 1-6, and the elastic pressing portion 30-1 also serves as an angle indicator, making the inclination angle of the first inclined surface 2-1 visible.

[0184] In Embodiment 3, the usage method of the angle gauge is as follows: By pressing the elastic pressing portion 30-1, the bump 30-2 is separated from the initial first positioning groove 1-14. At the same time, the elastic pressing portion 30-1 is pushed to move, driving the pushing block 30 to move (such as moving along the axial direction). The second inclined surface 3-1 drives the bottom of the higher end 2-1-1 of the first inclined surface in the first inclined body 2 to rise or fall to the corresponding angle, that is, the inclination angle of the first inclined surface 2-1 is adjusted to the specified angle. Then, the elastic pressing portion 30-1 is released. At this time, the bump 30-2 is embedded in the corresponding first positioning groove 1-14, forming a limiting structure to fix the position of the pushing block 30 (such as fixing the axial position), preventing it from moving and ensuring that the inclination angle of the first inclined surface 2-1 remains unchanged.

[0185] The pushing block 30 can be in the shape of a push tube or other shapes, as long as the pushing block 30 can move as an angle adjusting member, and the second inclined surface 3-1 is used to drive the bottom of the higher end 2-1-1 of the first inclined surface in the first inclined body 2 to rise or fall, so as to adjust the inclination angle of the first inclined surface 2-1.

[0186] The first inclined body 2 is provided with an extension portion 2-4. One end of the extension portion 2-4 is connected to one end of the third elastic body 30-4, and the other end of the third elastic body 30-4 is connected to or abuts against the inner side wall of the first support 1. The third elastic body 30-4 helps the first inclined body 2 to reset. When the inclination angle of the first inclined surface 2-1 is restored, the first inclined surface 2-1 automatically retracts until it is reset, without additional operation by the user.

[0187] See Figures 9 to 10 , Specific Embodiment 4. Embodiment 4 provides an angle gauge with adjustable angles. The difference between Embodiment 4 and the foregoing embodiments is that the top of the first support 1 is provided with a first connection groove

[0188] 1-13. The first connection groove 1-13 is used to connect the grinding tool support 5 and / or the grinding rod and / or the taper rod.

[0189] The first connecting groove 1-13 is located on the axis of the first bracket 1. After the first bracket 1 is installed with the knife grinding part (such as the knife grinding bracket 5), the first inclined surface 2-1 of the angle gauge corresponds to the knife grinding rod 8-1 or the knife grinding surface of the knife grinding part, which is convenient for grinding the tool on the knife grinding rod 8-1 by using the angle gauge.

[0190] Alternatively, the knife grinding part can also directly adopt a knife grinding rod. One end of the knife grinding rod is connected and fixed to the first connecting groove 1-13, and the first inclined surface 2-1 of the angle gauge corresponds to the knife grinding rod, which is convenient for grinding the tool on the knife grinding rod 8-1 by using the angle gauge.

[0191] See Figures 16 to 28 , Specific Embodiment 5. This Embodiment 5 provides an angle gauge with adjustable angle. The difference between Embodiment 5 and the foregoing embodiments is that the push tube 3 is provided with four second inclined surfaces 3-1, and each second inclined surface 3-1 corresponds to a first inclined surface body 2. The four first inclined surface bodies 2 are distributed around the first bracket 1, such as around the top of the first bracket 1 or in four directions, so as to make more full use of the knife grinding parts on the knife grinding rod to grind the tool.

[0192] The four first inclined surface bodies 2 are all connected to the fourth elastic body 10 (such as an O-shaped elastic ring). When the push tube moves in the reverse direction, the four first inclined surface bodies 2 are synchronously and automatically reset under the action of the fourth elastic body 10, and the first inclined surface body 2 automatically retracts into the first installation groove 1-1. For example, each first inclined surface body 2 is provided with a hook 2-6 at the bottom, and the hooks 2-6 of the four first inclined surface bodies 2 are all hooked to the same fourth elastic body 10 (such as an O-shaped elastic ring).

[0193] The first bracket 1 is provided with an indicating part 1-16, and the outer side surface of the first angle adjusting knob 4 is provided with a third mark 4-3. The indicating part 1-16 and the third mark 4-3 cooperate with each other. The third mark 4-3 includes the mark of the rotation direction of the first angle adjusting knob 4 and / or the mark of the rotation angle value of the first angle adjusting knob 4, which displays the rotation direction and / or the rotation angle value of the first angle adjusting knob 4. The user can select the rotation direction of the first angle adjusting knob 4 according to the third mark 4-3 to realize the quick adjustment of the inclination angle of the first inclined surface 2-1. According to the different angle values corresponding to the indicating part 1-16 in the third mark, it helps the user quickly judge the rotation amplitude of the first angle adjusting knob 4.

[0194] Specific Embodiment 6. This Embodiment 6 provides an angle gauge with adjustable angle. The difference between Embodiment 6 and the foregoing embodiments is that the angle gauge can also be provided with three groups of angle adjusting mechanisms, and the three first inclined surfaces 2-1 respectively correspond to two different knife grinding rods or different knife grinding surfaces of the same knife grinding rod or different knife grinding plane positions on a knife grinding plate (such as a ceramic plate or a diamond plate, etc.).

[0195] Alternatively, the angle gauge may also be provided with five sets of angle adjustment mechanisms, and the five first inclined surfaces 2-1 respectively correspond to two different sharpening rods or different sharpening surfaces of the same sharpening rod or different sharpening plane positions on the sharpening plate.

[0196] Alternatively, the angle gauge may also be provided with six sets of angle adjustment mechanisms, and the six first inclined surfaces 2-1 respectively correspond to two different sharpening rods or different sharpening surfaces of the same sharpening rod or different sharpening plane positions on the sharpening plate.

[0197] Alternatively, the angle gauge may also be provided with eight sets of angle adjustment mechanisms, and the eight first inclined surfaces 2-1 respectively correspond to two different sharpening rods or different sharpening surfaces of the same sharpening rod or different sharpening plane positions on the sharpening plate.

[0198] Specific Embodiment 7. Embodiment 7 provides an angle gauge with adjustable angles. The angle gauge includes a set of angle adjustment mechanisms. The set of angle adjustment mechanisms includes a first bracket 1, a first inclined surface body 2, and an angle adjustment member. The first inclined surface body 2 is provided with a first inclined surface 2-1, and the angle adjustment member is provided with a second inclined surface 3-1. The first inclined surface body 2 is pivotally connected to the first bracket 1. By moving the angle adjustment member, the second inclined surface 3-1 drives one end of the first inclined surface body 2 to rise or fall, adjusting the inclination angle of the first inclined surface 2-1. The first inclined surface 2-1 provides different initial angles for the tool to be ground on the sharpening rod.

[0199] For example, the second inclined surface 3-1 drives the bottom of the higher end 2-1-1 of the first inclined surface in the first inclined surface body 2 to rise or fall, adjusting the inclination angle of the first inclined surface 2-1.

[0200] The connection between the first inclined surface body 2 and the first bracket 1 is close to the lower end 2-1-2 of the first inclined surface.

[0201] When the angle adjustment member moves from the higher end to the lower end of the first inclined surface 2-1, the bottom of the first inclined surface body 2 corresponding to the higher end 2-1-1 of the first inclined surface is gradually raised along the second inclined surface 3-1, and the inclination angle of the first inclined surface 2-1 is gradually increased. When the angle adjustment member moves from the lower end to the higher end of the first inclined surface 2-1, the bottom of the first inclined surface body 2 corresponding to the higher end 2-1-1 of the first inclined surface is gradually lowered along the second inclined surface 3-1, and the inclination angle of the first inclined surface 2-1 is gradually decreased.

[0202] The first inclined surface body 2 and the angle adjustment member may be wedge-shaped bodies or wedges, or other shaped bodies provided with corresponding inclined surfaces that can achieve the corresponding functions of the two inclined surfaces.

[0203] See Figures 29 to 52, Specific Embodiment 8. This embodiment 8 provides a knife sharpener, which includes the adjustable angle gauge described in the above embodiment. The first bracket 1 is connected to the knife sharpening part. The first inclined surface 2-1 provides a sharpening angle for the tool of the knife sharpening part, that is, the first inclined surface 2-1 provides a sharpening angle for the tool to be sharpened on the knife sharpening part. The knife sharpening part includes a knife sharpening bracket 5 and a sharpening rod 8-1. The knife sharpening bracket 5 is internally provided with a storage space for storing the sharpening rod 8-1 and / or the taper rod 8-3.

[0204] For example, the bottom end of the knife sharpening bracket 5 is connected to the first bracket 1 through a third connecting piece 6. The third connecting piece 6 can be selected as an injection molded part. The third connecting piece 6 is divided into a connecting section A6-1 and a connecting section B6-2. The connecting section A6-1 is embedded in the other end of the taper rod receiving hole 5-2-1 to realize the connection between the third connecting piece 6 and the knife sharpening bracket 5. The outer side surface of the connecting section B6-2 of the third connecting piece 6 is provided with a fourth external thread 6-2-4 for connecting the first bracket 1. For example, a fourth internal thread 1-13-2 is provided in the first connecting groove 1-13 (at this time, the fourth internal thread 1-13-2 can also be the third internal thread 9-1 of the threaded sleeve insert 9, and one end of the threaded sleeve insert 9 extends to the opening of the first connecting groove 1-13. The fourth internal thread 1-13-2 can also be an internally threaded part added separately). The fourth internal thread 1-13-2 and the fourth external thread 6-2-4 are matched to realize the connection between the first bracket 1 and the third connecting piece 6.

[0205] Preferably, a gasket 6-5 for pressing against the sharpening rod 8-1 in the receiving hole 5-2 is provided at the connection between the connecting section A6-1 and the connecting section B6-2 of the third connecting piece 6, such as an annular gasket, which is made of metal to increase the rigidity of the gasket.

[0206] The connecting section A6-1 of the third connecting piece 6 is in the shape of a round rod. The outer side surface of the connecting section A6-1 is provided with a knurled part 6-1-4. After the connecting section A6-1 is embedded in the other end of the taper rod receiving hole 5-2-1, the knurled part 6-1-4 and the other end of the taper rod receiving hole 5-2-1 are in interference fit to realize the connection between the third connecting piece 6 and the knife sharpening bracket 5. Preferably, the knurled part 6-1-4 is located at a position on the connecting section A6-1 close to the connecting section B6-2. The connecting section A6-1 is also provided with a third through hole 6-1-5, such as a radial third through hole 6-1-5. By using the design of the knurled part 6-1-4 and the third through hole 6-1-5, the assembly accuracy requirements that the two ends of the opening groove 5-1 on the knife sharpening bracket 5 are respectively aligned with the two third guiding parts 2-1-3 on the first inclined surface 2-1 can be met, and the assembly speed and position accuracy of the third connecting piece 6 with the first bracket 1 and the knife sharpening bracket 5 can be improved.

[0207] The specific assembly steps are as follows. First, embed a part of the connecting section A6-1 into the other end of the tapered rod receiving hole 5-2-1 (at this time, the connecting section A6-1 and the tapered rod receiving hole 5-2-1 are pre-riveted, but their circumferential positions can be adjusted), and keep the knurled portion 6-1-4 and the third through hole 6-1-5 outside the tapered rod receiving hole 5-2-1. Second, rotate the third connecting member 6 and the knife grinding bracket 5 together so that the fourth external thread 6-2-4 locks with the fourth internal thread 1-13-2. Then, insert a pin (not shown in the drawings) through the third through hole 6-1-5, and rotate the pin to drive the third connecting member 6 and the knife grinding bracket 5 to rotate together, so as to lock the fourth external thread 6-2-4 and the fourth internal thread 1-13-2 (that is, to realize the threaded connection between the first bracket 1 and the third connecting member 6). Third, keep the first bracket 1 and the third connecting member 6 stationary, and rotate the knife grinding bracket 5 sleeved on the connecting section A6-1 circumferentially until the two ends of the opening groove 5-1 on the knife grinding bracket 5 are respectively aligned with the two third guiding portions 2-1-3 on the first inclined surface 2-1. Then, use the pin to rotate reversely, and the third connecting member 6 and the knife grinding bracket 5 rotate reversely together until the fourth external thread 6-2-4 is separated from the fourth internal thread 1-13-2, and the first bracket 1 and the third connecting member 6 are disassembled, so that the third connecting member 6 and the knife grinding bracket 5 can be removed from the first bracket 1 together. During this process, there is no circumferential rotation between the third connecting member 6 and the knife grinding bracket 5. Finally, remove the pin, and rivet the removed knife grinding bracket 5 and the connecting section A6-1, that is, rivet the knurled portion 6-1-4 and the tapered rod receiving hole 5-2-1 to the end, to form an interference fit between the knurled portion 6-1-4 and the other end of the tapered rod receiving hole 5-2-1, and the connecting section A6-1 and the knife grinding bracket 5 are fixed both axially and circumferentially. Thus, the circumferential position calibration of the fourth external thread 6-2-4 and the opening groove 5-1 on the knife grinding bracket 5 is completed. Subsequently, as long as the user locks the fourth external thread 6-2-4 and the fourth internal thread 1-13-2, it can be ensured that the two ends of the opening groove 5-1 on the knife grinding bracket 5 are respectively aligned with the two third guiding portions 2-1-3 on the first inclined surface 2-1, making the installation of the knife grinding bracket 5 and the first bracket 1 efficient and highly accurate.

[0208] The top of the knife sharpening support 5 is provided with a third knob 5-3 for pressing against the sharpening rod 8-1 and / or the taper rod 8-3 in the storage space. For example, the third knob 5-3 is threadedly connected to the top of the knife sharpening support 5 (such as the top of the taper rod storage hole 5-2-1). After removing the third knob 5-3, it is very convenient to store the sharpening rod 8-1 and / or the taper rod 8-3 in the storage space (such as the storage hole 5-2) or take out the sharpening rod 8-1 and / or the taper rod 8-3 from the storage space. The third knob 5-3 can press against the sharpening rod 8-1 and / or the taper rod 8-3 in the storage space to prevent the sharpening rod 8-1 and / or the taper rod 8-3 from sliding out from the top of the storage hole 5-2. After the third connecting member 6 is embedded in the knife sharpening support 5, the top of the connecting section A6-1 can also be used to press against the taper rod 8-3. Cooperating with the third knob 5-3, the taper rod 8-3 is stored and limited in the taper rod storage hole 5-2-1, and accidental shaking of the taper rod 8-3 is avoided.

[0209] Preferably, the third knob cover 5-3-1 of the third knob 5-3 is in the shape of a frustum of a cone, which can effectively prevent the tool from colliding with the third knob cover 5-3-1 during tool sharpening (such as blade swinging), protecting the tool.

[0210] The outer side of the third knob cover 5-3-1 is provided with a third anti-slip portion 5-3-2. For example, the third anti-slip portion 5-3-2 is a mesh anti-slip pattern, which is convenient for installing and removing the third knob 5-3.

[0211] The top of the third knob cover 5-3-1 is provided with a fourth anti-slip portion 5-3-3. The fourth anti-slip portion 5-3-3 includes a number of annular anti-slip patterns. When it is necessary to place the entire adjustable angle gauge upright, for example, the top of the third knob cover 5-3-1 presses against the tabletop (it can also be other fixed parts, such as a wooden board, etc.), the fourth anti-slip portion 5-3-3 plays an anti-slip role between the third knob cover 5-3-1 and the tabletop. The design of the number of concentric annular anti-slip patterns of the fourth anti-slip portion 5-3-3 can maintain the same friction force at any horizontal angle, achieving the same anti-slip effect and making it safer to use.

[0212] A reserved gap 5-4 is provided between the third knob cover 5-3-1 of the third knob 5-3 and the top of the knife sharpening support 5. A first buffer portion 5-4-1, such as a silica gel buffer pad, is provided in the reserved gap 5-4 to better prevent collision between the sharpening rod 8-1 and the third knob cover 5-3-1 and avoid generating noise. In this embodiment 8, the first buffer portion 5-4-1 fills the reserved gap 5-4, flattening the top of the sharpening rod 8-1 and the knife sharpening support 5, eliminating the movement gap of the sharpening rod 8-1, preventing collision between the sharpening rod 8-1 and the third knob cover 5-3-1, and avoiding generating noise.

[0213] In addition, a second buffer portion 5-4-2, such as a silica gel buffer pad, may be further provided between the connecting section A6-1 of the third connecting member 6 and the taper rod 8-3, so as to better prevent collision between the taper rod 8-3 and the third connecting member 6 and avoid generating noise.

[0214] The knife sharpening bracket 5 is provided with an opening groove 5-1 for installing the knife sharpening rod 8-1. The surface of the knife sharpening rod 8-1 corresponding to the opening portion 5-1-1 of the opening groove 5-1 is the knife sharpening surface 8-1-1. The tool is sharpened on the knife sharpening surface 8-1-1. The knife sharpening rod 8-1 located in the opening groove 5-1 can also rotate itself, so that different positions on the outer surface of the knife sharpening rod 8-1 have the opportunity to correspond to the opening portion 5-1-1 of the opening groove 5-1 and can all be used to sharpen the tool, making the best use of the outer surface of the knife sharpening rod 8-1, fully ensuring the working efficiency of the knife sharpening rod 8-1, effectively improving the utilization rate of the body of the knife sharpening rod 8-1, and ensuring that the knife sharpening rod 8-1 provides better knife sharpening effects for the tool.

[0215] The arc length of the cross section of the opening portion 5-1-1 is less than or equal to one half of the circumference of the circle where the cross section of the opening groove 5-1 is located. This can not only ensure that the knife sharpening rod 8-1 is installed in the opening portion 5-1-1 and is not easy to fall off, but also make the area of the opening portion 5-1-1 (i.e., the area of the knife sharpening surface 8-1-1) as large as possible, providing convenience for the tool to be sharpened on the knife sharpening surface 8-1-1 and avoiding the edge portion of the opening groove 5-1 affecting the tool sharpening.

[0216] The outer side surface of the knife sharpening bracket 5 is also provided with cowhide 8-2 for knife sharpening, such as 2 pieces of yellow cowhide 8-2, which are respectively a polishing surface and a rough surface, increasing the usage scenarios of the knife sharpener. It can not only sharpen the tool but also be used for polishing the tool.

[0217] In this embodiment 8, the cross section of the knife sharpening bracket 5 is hexagonal. Cowhide 8-2 is respectively arranged on two opposite sides (such as the upper side and the lower side), and opening grooves 5-1 are respectively arranged at two corners far from the cowhide 8-2 (such as the left end and the right end). The storage space inside the knife sharpening bracket 5 is five storage holes 5-2. For example, two of the storage holes 5-2 each store a spare diamond round tube knife sharpening rod 8-1, and the other two storage holes 5-2 each store a spare alumina polishing ceramic rod. Both the diamond round tube knife sharpening rod 8-1 and the alumina polishing ceramic rod can be installed in the opening groove 5-1 to realize the corresponding tool sharpening function. The storage hole 5-2 at the middle part of the cross section of the knife sharpening bracket 5 is a taper rod storage hole 5-2-1. One end of the taper rod storage hole 5-2-1 is connected to the third knob 5-3 (for example, the inner side wall of one end of the taper rod storage hole 5-2-1 corresponding to the third knob 5-3 is provided with an internal thread matching the external thread of the third knob 5-3), and the other end of the taper rod storage hole 5-2-1 is connected to the third connecting member 6.

[0218] The storage space is, for example, multiple storage holes 5-2, which are separated for storage without interference, avoiding mutual contact and damage. The third knob 5-3 and the third connecting member 6 are respectively located at both ends of the knife sharpening bracket 5. At this time, the storage holes 5-2 are open at both ends corresponding to the knife sharpening bracket 5. Therefore, the third knob 5-3 and the third connecting member 6 respectively abut against both ends of the sharpening rod 8-1 and / or the taper rod 8-3 in the storage holes 5-2.

[0219] The first bracket 1 is connected to one end of the handle 7. For example, one end (such as the top end) of the first connecting groove 1-13 of the first bracket 1 is connected to the third connecting member 6, and the other end (such as the bottom end) of the first connecting groove 1-13 is connected to the threaded sleeve insert 9. The threaded sleeve insert 9 is connected to one end (such as the top end) of the handle 7 through a bolt member. At this time, the top of the handle 7 limits the bottom of the first angle adjustment knob 4, and the first bracket 1 limits the top of the first angle adjustment knob 4. When the first angle adjustment knob 4 rotates, the first angle adjustment knob 4 does not move axially, ensuring the accuracy of the axial movement of the push tube 3 when the first angle adjustment knob 4 rotates.

[0220] The top of the first angle adjustment knob 4 abuts against the bottom of the first bracket 1, which can prevent the first angle adjustment knob 4 from shaking, reducing the shaking gap between the first angle adjustment knob 4 and the push tube 3, so that the axial movement of the push tube 3 always remains coaxial with the center or axis of the handle. The first bracket 1 limits the top of the first angle adjustment knob 4, and the bottom of the first angle adjustment knob 4 abuts against the handle 7, and the handle 7 limits the bottom of the first angle adjustment knob 4. When the first angle adjustment knob 4 rotates, the first angle adjustment knob 4 does not move axially. Correspondingly, the first angle adjustment knob 4 drives the push tube 3 to achieve axial movement through threaded connection.

[0221] The top of the handle 7 (or the fourth convex part 7-8 of the handle) can also be used to abut against the push tube 3 to assist in the axial limit of the push tube 3, that is, the bottom of the push tube 3 is axially limited by the handle 7, avoiding the user from forcibly over-rotating the first angle adjustment knob 4 and causing damage to the first protruding block 3-3.

[0222] The interior of the handle 7 is hollow, forming a fourth storage space 7-1 for storing the knife sharpening part. When the knife does not need to be sharpened, the knife sharpening bracket 5 can be detached from the first bracket 1, and then the knife sharpening part (i.e., the knife sharpening bracket 5 and the knife sharpening rod 8-1, taper rod 8-3, cowhide 8-2, etc. thereon) can be stored in the fourth storage space 7-1 inside the handle 7, reducing the volume of the knife sharpener as a whole, making it more beautiful in appearance, facilitating the overall storage of the knife sharpener (such as storing it in the user's toolbox or pocket), and also avoiding the accidental loss of the knife sharpening part and preventing the knife sharpening part (especially the knife sharpening rod 8-1, taper rod 8-3, and cowhide 8-2) from being damaged due to external reasons, such as accidental bumps, etc.

[0223] The other end of the handle 7 is connected to the end cap 7-2. The end cap 7-2 cooperates with the handle 7 to achieve the storage of the knife sharpening part. The end cap 7-2 is provided with a number of arrow-twisting teeth 7-2-7, and the arrow-twisting teeth 7-2-7 form a fourth hollow part 7-2-1 for twisting the arrowhead. When the end cap 7-2 is tightened on the handle 7, the fourth hollow part 7-2-1 is used to twist the arrowhead, facilitating the disassembly and installation of the arrowhead and arrow shaft in the wild, enabling the repeated use of the arrowhead and arrow shaft, and improving the utilization rate of the arrowhead and arrow shaft.

[0224] Preferably, a fourth protrusion 7-2-8 is provided on the side of the arrow-twisting teeth 7-2-7 facing the inside of the handle 7, which can prevent the grinding rod bracket 5 from shaking when stored in the handle 7 and avoid generating noise.

[0225] The other end of the handle 7 is provided with a fourth mounting hole 7-4 for mounting a hand rope (not shown in the drawings). By mounting the hand rope on the handle 7, it is convenient to carry the knife sharpener, prevent the loss of the knife sharpener, and prevent the accidental drop and damage of the knife sharpener. A fifth mounting hole 7-2-2 is provided at the position corresponding to the fourth mounting hole 7-4 on the end cap 7-2. The hand rope passes through the fifth mounting hole 7-2-2 and is placed outside the handle 7 for convenient use of the hand rope. The fifth mounting hole 7-2-2 and the fourth hollow part 7-2-1 are connected by a zigzag channel 7-2-3. One end of the hand rope is first connected to the fourth mounting hole 7-4, and then the other end of the hand rope passes through the fourth hollow part 7-2-1 and is placed outside the handle 7. This installation is more convenient and efficient. Then, the rope body of the hand rope is pushed into the fifth mounting hole 7-2-2 along the zigzag channel 7-2-3. The zigzag channel 7-2-3 can limit the rope body of the hand rope in the fifth mounting hole 7-2-2, preventing the rope body of the hand rope from easily returning to the fourth hollow part 7-2-1 and avoiding the rope body of the hand rope from being cut by the arrowhead in the fourth hollow part 7-2-1. For example, when the user twists the arrowhead using the fourth hollow part 7-2-1 of the end cap 7-2, the arrowhead is embedded in the fourth hollow part 7-2-1. If the rope body of the hand rope is in the fourth hollow part 7-2-1, the arrowhead will surely cut the rope body of the hand rope.

[0226] The tail cover 7-2 is provided with a fourth buckle 7-2-6, and the other end of the handle 7 is provided with a fourth through hole 7-7. The fourth buckle 7-2-6 and the fourth through hole 7-7 are matched to realize the detachable connection between the handle 7 and the tail cover 7-2. The user presses the fourth buckle 7-2-6 through the fourth through hole 7-7 to separate the fourth buckle 7-2-6 from the fourth through hole 7-7, which is convenient for separating the tail cover 7-2 and the handle 7. For example, the tail cover 7-2 is provided with two groups of fourth buckles 7-2-6 and fourth through holes 7-7, which are arranged on both sides of the tail cover 7-2 in a pairwise corresponding manner, making it convenient to use and the connection between the handle 7 and the tail cover 7-2 is firm.

[0227] The tail cover 7-2 is provided with a second positioning convex block 7-2-4, such as an arc-shaped convex block, and the other end of the handle 7 is provided with a second positioning groove 7-5, such as an arc-shaped groove. The second positioning convex block 7-2-4 and the second positioning groove 7-5 are matched. Before installing the tail cover 7-2 and the handle 7, align the second positioning convex block 7-2-4 and the second positioning groove 7-5, which can pre-determine the installation angle between the handle 7 and the tail cover 7-2, realize the function of pre-positioning the handle 7 and the tail cover 7-2, and prevent the misinstallation of the handle 7 and the tail cover 7-2 (that is, the handle 7 and the tail cover 7-2 are not aligned and the tail cover 7-2 and the handle 7 cannot be installed), avoiding that the fourth installation hole 7-4 and the fifth installation hole 7-2-2 cannot be aligned after the handle 7 and the tail cover 7-2 are installed, which makes the hand rope body easy to be cut by the arrow. At the same time, after the tail cover 7-2 and the handle 7 are installed, the second positioning convex block 7-2-4 and the second positioning groove 7-5 are clamped with each other, which can also prevent the axial rotation of the tail cover 7-2 and the handle 7.

[0228] The other end of the handle 7 (that is, the outer side surface near the bottom end) is provided with a second limiting block 7-6, and the inner side wall of the tail cover 7-2 is provided with a second limiting groove 7-2-5. The second limiting block 7-6 and the second limiting groove 7-2-5 are matched. When the handle 7 and the tail cover 7-2 are aligned and installed, the second limiting block 7-6 is also synchronously embedded in the second limiting groove 7-2-5, which can effectively prevent the axial rotation of the tail cover 7-2 and the handle 7.

[0229] The sharpening tool further includes a sharpening part, which also includes a taper rod 8-3. The taper rod 8-3 is provided with a hook sharpening groove 8-3-1 for sharpening fishhooks. The thicker end of the taper rod 8-3 and the hook sharpening groove 8-3-1 is an extension section 8-3-2. After the taper rod 8-3 is connected to the first bracket 1, part of the extension section 8-3-2 is located outside the first bracket 1. When sharpening the fishhook, the hook sharpening groove 8-3-1 is not too close to the first bracket 1, because once the fishhook is pushed by the first bracket 1, the fishhook cannot be effectively sharpened. Moreover, after the working part of the taper rod 8-3 (such as the part for sharpening the knife) is also synchronously extended forward through the extension section 8-3-2, it is convenient for the taper rod 8-3 to better sharpen the fishhook.

[0230] The thicker end of the tapered rod 8-3 is provided with a third external thread 8-3-3, which is matched with the third internal thread 9-1 of the threaded sleeve insert 9 or the fourth internal thread 1-13-2 in the first connecting groove 1-13, so as to realize the connection between the tapered rod 8-3 and the first bracket 1, facilitating the disassembly and assembly of the tapered rod 8-3 and the first bracket 1.

[0231] The inner side wall of the handle 7 is also provided with a reinforcing rib 7-9, and the outer side wall of the knife sharpening bracket 5 is provided with a third positioning concave part 5-5. The reinforcing rib 7-9 is matched with the third positioning concave part 5-5. The reinforcing rib 7-9 not only increases the strength of the handle 7 itself, but also aligns the reinforcing rib 7-9 with the third positioning concave part 5-5 before the knife sharpening bracket 5 is received into the handle. Only in this way can the knife sharpening bracket 5 be inserted into the handle 7 (i.e., the fourth receiving space 7-1). After the knife sharpening bracket 5 is inserted into the handle 7, the reinforcing rib 7-9 abuts against the third positioning concave part 5-5. For example, six groups of reinforcing ribs 7-9 and the third positioning concave part 5-5 can relatively fix the position of the knife sharpening bracket 5 in the handle 7, preventing the knife sharpening bracket 5 in the handle 7 from shaking accidentally, and at the same time maintaining a gap between the inner side wall of the handle 7 and the knife sharpening bracket 5, avoiding friction or collision between the inner side wall of the handle 7 and the knife sharpening bracket 5 (especially the cowhide 8-2 and the knife sharpening rod 8-1 in the opening groove 5-1), and protecting the cowhide 8-2 and the knife sharpening rod 8-1 in the opening groove 5-1 in good condition. In addition, the third positioning concave part 5-5 can also prevent the tool from colliding with the knife sharpening bracket 5 when sharpening the tool.

[0232] The knife sharpening rod 8-1 can be a hollow rod, which helps to reduce the overall weight of the knife sharpener and is convenient for carrying.

[0233] In the specific use of the sharpener in Embodiment 8, open the tail cover 7-2, take out the sharpening bracket 5 in the handle 7, and select a suitable sharpening rod 8-1 to install in the opening groove 5-1. The remaining sharpening rods 8-1 and the taper rod 8-3 are stored in the sharpening bracket 5. Then align and connect the sharpening bracket 5 with the first bracket 1 (the first bracket 1 has been installed at the top of the handle 7). By rotating the first angle adjustment knob 4, lift the first inclined surface 2-1 of the angle gauge to a suitable inclination angle, and then use the first inclined surface 2-1 to grind the tool on the sharpening rod 8-1. The tool can also be polished separately using the cowhide 8-2. When the taper rod 8-3 needs to be used, remove the sharpening bracket 5 from the first bracket 1, unscrew the third knob 5-3 from the top of the sharpening bracket 5, take out the taper rod 8-3 from the taper rod storage hole 5-2-1, and after installing the taper rod 8-3 on the first bracket 1, the taper rod 8-3 can be used to grind the fishhook or the tool. When an arrow needs to be screwed, connect the handle 7 with the tail cover 7-2 from which the sharpening bracket 5 has been removed, insert the arrow-screwing tooth 7-2-7 on the tail cover 7-2 into the arrow, and rotate the handle 7 to drive the arrow to rotate, realizing the disassembly and assembly of the arrow and the arrow shaft. When the sharpener is not needed, store the sharpening bracket 5 (including the sharpening rod 8-1 and the taper rod 8-3) in the handle 7 together. After covering the tail cover 7-2, it can be carried around with you.

[0234] The inner side wall 7-7-1 of the bottom of the handle corresponding to the fourth through hole 7-7 is an arc surface, which can reduce the fastening amount between the tail cover 7-2 (actually the fourth buckle 7-2-6) and the handle 7, making it convenient to remove the tail cover 7-2.

[0235] See Figures 53 to 65 , in Specific Embodiment 9, this embodiment provides a sharpener, which includes an angle gauge with adjustable angle described in the above embodiment. The difference between this embodiment 9 and Embodiment 8 is that a first knob 1-7 is provided radially on the first bracket 1 corresponding to the first connection groove 1-13, and a radial third installation hole 6-2-2 and a third axial hole 6-2-1 for installing a metal insert 6-3 are provided on the connecting section B6-2. After the connecting section B6-2 is inserted into the first connection groove 1-13, the third installation hole 6-2-2 matches the first knob 1-7 to realize the connection between the third connecting member 6 and the first bracket 1.

[0236] The metal insert 6-3 can be a cylindrical metal bar, such as an iron shaft or a stainless steel shaft. After the connecting section A6-1 is inserted into the grinding tool holder 5 (such as the bottom end inside the tapered rod receiving hole 5-2-1), the metal insert 6-3 is then inserted into the third axial hole 6-2-1. The third axial hole 6-2-1 can extend into the connecting section A6-1 (such as communicating with the third hollow portion 6-1-1). The presence of the metal insert 6-3 increases the radial pressure between the third connecting member 6 (i.e., the connecting section A6-1) and the grinding tool holder 5 (such as the inside of the bottom end of the tapered rod receiving hole 5-2-1), preventing the third connecting member 6 from detaching from the grinding tool holder 5. Additionally, it strengthens the strength of the third connecting member 6 (especially the connecting section B6-2), and the connecting section B6-2 is not easily broken accidentally.

[0237] The first guide groove 1-5 and the first knob 1-7 face each other in pairs and respectively correspond to the cowhide 8-2 on the grinding tool holder 5 (i.e., the first guide groove 1-5 corresponds to a cowhide 8-2 for grinding, and the first knob 1-7 corresponds to another cowhide 8-2 for grinding).

[0238] The outer side surface of the connecting section B6-2 is provided with a positioning surface B6-2-3, and the inner side wall of the first connecting groove 1-13 is provided with a positioning surface A1-13-1. The positioning surface A1-13-1 and the positioning surface B6-2-3 are matched to play a role in preventing misassembly. That is, before the connecting section B6-2 is inserted into the first connecting groove 1-13, the positioning surface B6-2-3 of the connecting section B6-2 corresponds to the positioning surface A1-13-1 of the first connecting groove 1-13, and then it is inserted. In this way, it can ensure that after the two are installed, the installation position of the grinding tool holder 5 and the first holder 1 is accurate (i.e., the angle gauge corresponds to the corresponding grinding rod 8-1 on the grinding part), improving the assembly efficiency. At the same time, the positioning surface A1-13-1 and the positioning surface B6-2-3 can also prevent the connecting section B6-2 from rotating, playing an anti-rotation role, ensuring that during the use of the grinding tool, the angle gauge always corresponds to the corresponding grinding rod 8-1 on the grinding part.

[0239] The first knob 1-7 includes a first knob cover 1-7-3 and a screw rod 1-7-4, one end of the screw rod 1-7-4 is connected to the first knob cover 1-7-3, a second external thread 1-7-1 is provided on the outer wall of the first knob cover 1-7-3, a first through hole 1-11 is provided on the first bracket 1 for mounting the first knob 1-7, and a second internal thread 1-11-1 is provided on the inner wall of the first through hole 1-11, at this time, the second external thread 1-7-1 matches the second internal thread 1-11-1, by rotating the first knob 1-7, the first knob 1-7 passes through the first through hole 1-11 and then embeds into the third mounting hole 6-2-2, after tightening the first knob 1-7, the first knob 1-7 and the third mounting hole 6-2-2 work together to limit the axial movement of the third connecting member 6 (i.e., axial limit), so as to realize the connection between the first bracket 1 and the sharpening bracket 5, In addition, after tightening the first knob 1-7, the first knob 1-7 can cooperate with the inner wall of the first connecting groove 1-13 to clamp the connecting segment B6-2, fix the position of the connecting segment B6-2 in the radial direction, and prevent the connecting segment B6-2 from shaking radially. In other words, the first knob 1-7 is used to limit the connecting segment B6-2 in both axial and radial directions. In addition, the screw rod 1-7-4 between the second external thread 1-7-1 and the first button cover 1-7-3 is also provided with a second limiting portion 1-7-2. The second limiting portion 1-7-2, the screw rod 1-7-4 and the first button cover 1-7-3 realize a pattern of large ends and small middle. A limiting structure is formed between the second limiting portion 1-7-2 and the opening of the first through hole 1-11. The first button cover 1-7-3 is located outside the first bracket 1, and the second limiting portion 1-7-2 is located inside the first bracket 1 (i.e., inside the first through hole 1-11). No matter how the first knob 1-7 rotates, it will not detach from the first through hole 1-11, thereby preventing the first knob 1-7 from being lost. A second anti-slip portion 1-7-5 is provided on the outer side of the first button cover 1-7-3. For example, the second anti-slip portion 1-7-5 adopts a grid anti-slip pattern to facilitate better tightening or loosening of the first knob 1-7. When a limit is formed between the second limit portion 1-7-2 and the opening portion of the first through hole 1-11, the first knob 1-7 can no longer be pulled out. At this time, it can also effectively indicate that the first knob 1-7 has completely withdrawn from the third mounting hole of the third connecting member 6, and the knife sharpening bracket 5 can be disassembled from the first bracket 1.

[0240] The top of the first bracket 1 is also provided with a first limiting groove 1-10. At the connection of the connecting section A6-1 and the connecting section B6-2 of the third connecting piece 6, there is a third limiting protrusion 6-4 for abutting against the sharpening rod 8-1 and / or the taper rod 8-3 in the receiving hole 5-2. The third limiting protrusion 6-4 is matched with the first limiting groove 1-10. That is, after the first bracket 1 and the third connecting piece 6 are installed, the third limiting protrusion 6-4 is embedded in the first limiting groove 1-10, which can effectively prevent the third connecting piece 6 from rotating, fix the angle of the third connecting piece 6, and finally ensure that the sharpening rod 8-1 of the sharpening part can always correspond to the first inclined surface 2-1 of the angle gauge. At the same time, the third limiting protrusion 6-4 can also be used to abut against the sharpening rod 8-1 and / or the taper rod 8-3 in the receiving hole 5-2 to prevent the sharpening rod 8-1 and / or the taper rod 8-3 from sliding out from the bottom end of the receiving hole 5-2. In addition, the third limiting protrusion 6-4 does not completely cover the end of the receiving hole 5-2, which is convenient for the user to observe whether the receiving hole 5-2 is equipped with the sharpening rod 8-1 and / or the taper rod 8-3.

[0241] The third connecting piece 6 can be made of metal.

[0242] At the connection of the connecting section A6-1 and the connecting section B6-2 of the third connecting piece 6, there is a third buffer part 6-6 for abutting against the sharpening rod 8-1, such as a silica gel buffer pad, which can better prevent the collision between the sharpening rod 8-1 and the third connecting piece 6 and avoid generating noise. At this time, the third knob 5-3 can directly press on the sharpening rod 8-1 to press the sharpening rod 8-1 tightly. The third knob 5-3 does not press on the sharpening bracket 5, so that the sharpening rod 8-1 also has no play gap and noise is avoided.

[0243] The connecting section A6-1 is provided with a third hollow part 6-1-1, and the outer side surface of the connecting section A6-1 is provided with a third serrated part 6-1-2. During the installation of the third connecting piece 6 and the sharpening bracket 5, by pressing the third hollow part 6-1-1, the connecting section A6-1 can be better embedded in the sharpening bracket 5 (such as the taper rod receiving hole 5-2-1). After the connecting section A6-1 is embedded in the sharpening bracket 5, the third hollow part 6-1-1 restores its shape by the elasticity of the connecting section A6-1 itself, and the third serrated part 6-1-2 increases the friction between the connecting section A6-1 and the inner side wall of the sharpening bracket 5 (such as the taper rod receiving hole 5-2-1), enhancing the connection strength between the third connecting piece 6 and the sharpening bracket 5.

[0244] See Figure 66, Specific Embodiment 10. This Embodiment 10 provides a knife sharpener, which includes an angle gauge with adjustable angle described in the above embodiments. The difference between this Embodiment 9 and the foregoing embodiments is that the third connecting member 6 can be made of metal. The connecting section A6-1 of the third connecting member 6 is a circular structure as a whole. An anti-slip tooth shape 6-1-3 is provided on the outer side of the connecting section A6-1. When the connecting section A6-1 is embedded in the knife sharpening bracket 5 (such as the tapered rod receiving hole 5-2-1), the anti-slip tooth shape 6-1-3 is fixed to the inside of the knife sharpening bracket 5 (such as the tapered rod receiving hole 5-2-1) by press riveting, so as to prevent the third connecting member 6 from slipping off the knife sharpening bracket 5.

[0245] The foregoing are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. An angle gauge with adjustable angle, characterized in that: The angle gauge includes at least one set of angle adjustment mechanisms. Each set of angle adjustment mechanisms includes a first bracket (1), a first inclined plane body (2), and an angle adjustment member. The first inclined plane body (2) is provided with a first inclined surface (2-1) for grinding a tool, and the angle adjustment member is provided with a second inclined surface (3-1). The first inclined plane body (2) is rotatably connected to the first bracket (1). By moving the angle adjustment member, one end of the first inclined plane body (2) is lifted or lowered by the second inclined surface (3-1), so as to adjust the inclination angle of the first inclined surface (2-1).

2. The angle gauge with adjustable angle according to claim 1, wherein: The angle gauge further includes a first angle adjustment knob (4). The angle adjustment member is a push tube (3). The first angle adjustment knob (4) and the push tube (3) are threadedly connected to realize the axial movement of the push tube (3).

3. The adjustable-angle angle gauge according to claim 2, wherein: The push tube (3) is provided with four second inclined surfaces (3-1). Each second inclined surface (3-1) corresponds to a first inclined plane body (2). The four first inclined plane bodies (2) are distributed around the first bracket (1).

4. The adjustable-angle angle gauge according to claim 3, wherein: The four first inclined plane bodies (2) are all connected to a fourth elastic body (10).

5. The angle gauge with adjustable angle according to claim 1, characterized in that: The first bracket (1) is provided with a plurality of first positioning grooves (1-14). The angle adjustment member is a push block (30). The push block (30) is provided with an elastic pressing portion (30-1). The elastic pressing portion (30-1) is connected to a convex point (30-2). The convex point (30-2) is matched with the corresponding first positioning groove (1-14) to realize the positioning of the push block (30) after movement.

6. The angle gauge with adjustable angle according to claim 5, wherein: A second elastic body (30-3) is provided between the push block (30) and the elastic pressing portion (30-1); and / or a plurality of first positioning grooves (1-14) are arranged corresponding to the first identifier (1-6); and / or the first inclined plane body (2) is provided with an extension portion (2-4). One end of the extension portion (2-4) is connected to a third elastic body (30-4), and the other end of the third elastic body (30-4) is connected to or abuts against the inner side wall of the first bracket (1); and / or the first bracket (1) is further provided with a hollow first guide groove (1-5). The elastic pressing portion (30-1) is embedded in the first guide groove (1-5).

7. An angle gauge with adjustable angle according to any one of claims 1 to 6, characterized in that: The second inclined surface (3-1) drives the bottom of the higher end (2-1-1) of the first inclined surface in the first inclined plane body (2) to be lifted or lowered, so as to adjust the inclination angle of the first inclined surface (2-1); and / or at the connection between the first inclined plane body (2) and the first bracket (1), it is close to the lower end (2-1-2) of the first inclined surface; and / or the interior of the first bracket (1) is hollow. The first bracket (1) is provided with a first installation groove (1-1). The first inclined plane body (2) is connected to the first installation groove (1-1) through a connecting shaft (1-3). On the outer side of the push tube (3), there is a first external thread (3-2). One end of the push tube (3) corresponding to the second inclined surface (3-1) is embedded in the first hollow part (1-2) of the first bracket (1). The second inclined surface (3-1) corresponds to the first inclined surface body (2). The first angle adjustment knob (4) is hollow inside and the inner side wall is provided with a first internal thread (4-2). The first angle adjustment knob (4) is sleeved on the push tube (3), and the first internal thread (4-2) matches the first external thread (3-2).

8. The angle gauge with adjustable angle according to claim 7, wherein: Between the first bracket (1) and the first inclined surface body (2), there is also a first elastic body (1-4) for driving the first inclined surface body (2) to reset; and / or the first bracket (1) is also provided with a hollow first guide groove (1-5), and the push tube (3) is also provided with a first protruding block (3-3). The first protruding block (3-3) is embedded in the first guide groove (1-5). As the push tube (3) moves axially, the first protruding block (3-3) moves synchronously in the first guide groove (1-5); and / or on the outer side wall of the first bracket (1) on one side or both sides of the first guide groove (1-5), there is also a first mark (1-6) for displaying the angle value; and / or near the first guide groove (1-5), there is a second mark (1-8) for indicating the rotation direction of the first angle adjustment knob (4); and / or the first bracket (1) is provided with an indicating part (1-16), and the outer side surface of the first angle adjustment knob (4) is provided with a third mark (4-3). The indicating part (1-16) and the third mark (4-3) cooperate to display the rotation direction and / or the rotation angle value of the first angle adjustment knob (4); and / or the first inclined surface (2-1) faces away from the push tube (3), and the first inclined surface (2-1) faces away from the first bracket (1); and / or the first elastic body (1-4) and the push tube (3) are respectively located on both sides of the connecting shaft (1-3); and / or the top of the first bracket (1) is provided with a first connecting groove (1-13).

9. The adjustable-angle protractor according to claim 1 or 2 or 3 or 4 or 5 or 6 or 8, characterized in that: This angle gauge includes two groups of angle adjustment mechanisms or three groups of angle adjustment mechanisms or five groups of angle adjustment mechanisms or six groups of angle adjustment mechanisms or eight groups of angle adjustment mechanisms.

10. A knife sharpener, characterized in that: This knife sharpener includes the angle gauge with adjustable angle described in any one of the above 1 or 2 or 3 or 4 or 5 or 6 or 8. The first bracket (1) is connected to the knife sharpening part, and the first inclined surface (2-1) provides a sharpening angle for the tool to be sharpened on the knife sharpening part.

11. The sharpening device according to claim 10, wherein: The knife sharpening part includes a knife sharpening bracket (5) and a knife sharpening rod (8-1). The knife sharpening bracket (5) is provided with an opening groove (5-1) for installing the knife sharpening rod (8-1). The surface of the knife sharpening rod (8-1) corresponding to the opening part (5-1-1) of the opening groove (5-1) is the sharpening surface (8-1-1); or the knife sharpening part is a single knife sharpening rod; and / or inside the knife sharpening bracket (5), there is a storage space for storing the knife sharpening rod (8-1) and / or the taper rod (8-3); and / or the bottom end of the knife sharpening bracket (5) is connected to the first bracket (1) through a third connecting piece (6). The top end of the knife sharpening bracket (5) is provided with a third knob (5-3) for pressing against the knife sharpening rod (8-1) and / or the taper rod (8-3) in the storage space; and / or on the outer side surface of the knife sharpening bracket (5), there is also cowhide (8-2) for knife sharpening.

12. The sharpening device according to claim 11, characterized in that: The cross-section of the sharpening bracket (5) is hexagonal, with cowhide (8-2) provided on two opposite sides respectively, opening grooves (5-1) provided at two corners away from the cowhide (8-2), the storage space inside the sharpening bracket (5) is five storage holes (5-2), and the storage hole (5-2) at the middle part of the cross-section of the sharpening bracket (5) is a taper rod storage hole (5-2-1). One end of the taper rod storage hole (5-2-1) is connected to the third knob (5-3), and the other end of the taper rod storage hole (5-2-1) is connected to the third connecting member (6); The third connecting member (6) is divided into a connecting section A (6-1) and a connecting section B (6-2). The connecting section A (6-1) is provided with a third hollow part (6-1-1) inside, a third serrated part (6-1-2) on the outer side surface, and the connecting section A (6-1) is embedded into the other end of the taper rod storage hole (5-2-1) to realize the connection between the third connecting member (6) and the sharpening bracket (5); or the outer side surface of the connecting section A (6-1) is provided with an anti-loosening tooth shape (6-1-3), and the connecting section A (6-1) is embedded into the other end of the taper rod storage hole (5-2-1) to realize the connection between the third connecting member (6) and the sharpening bracket (5); or the connecting section A (6-1) of the third connecting member (6) is in the shape of a round rod, the outer side surface of the connecting section A (6-1) is provided with a knurled part (6-1-4), and after the connecting section A (6-1) is embedded into the other end of the taper rod storage hole (5-2-1), the knurled part (6-1-4) and the other end of the taper rod storage hole (5-2-1) are in interference fit.

13. The sharpening device according to claim 12, characterized in that: A first knob (1-7) is provided radially on the first bracket (1) corresponding to the first connecting groove (1-13). The connecting section B (6-2) is provided with a radial third mounting hole (6-2-2) and a third axial hole (6-2-1) for installing a metal insert (6-3). After the connecting section B (6-2) is embedded into the first connecting groove (1-13), the third mounting hole (6-2-2) is matched with the first knob (1-7) to realize the connection between the third connecting member (6) and the first bracket (1); And / or a first limiting groove (1-10) is further provided at the top of the first bracket (1). A third limiting protrusion (6-4) for abutting against the sharpening rod (8-1) and / or the taper rod (8-3) in the storage hole (5-2) is provided at the connection between the connecting section A (6-1) and the connecting section B (6-2), and the third limiting protrusion (6-4) is matched with the first limiting groove (1-10); or a gasket (6-5) for abutting against the sharpening rod (8-1) in the storage hole (5-2) is provided at the connection between the connecting section A (6-1) and the connecting section B (6-2); And / or a positioning surface B (6-2-3) is provided on the outer side surface of the connecting section B (6-2), and a positioning surface A (1-13-1) is provided on the inner side wall of the first connecting groove (1-13), and the positioning surface A (1-13-1) and the positioning surface B (6-2-3) are matched; The first knob (1-7) and / or includes a first knob cover (1-7-3) and a screw rod (1-7-4). One end of the screw rod (1-7-4) is connected to the first knob cover (1-7-3). A second external thread (1-7-1) is provided on the outer side wall of the first knob cover (1-7-3). A second internal thread (1-11-1) is provided on the inner side wall of the first through hole (1-11) on the first bracket (1) for installing the first knob (1-7). At this time, the second external thread (1-7-1) and the second internal thread (1-11-1) are matched. A second limiting portion (1-7-2) is further provided on the screw rod (1-7-4) between the second external thread (1-7-1) and the first knob cover (1-7-3); On the periphery of the first bracket (1), two groups of first mounting grooves (1-1), first inclined surfaces (2), a first guide groove (1-5), and a first knob (1-7) are respectively provided. The two first inclined surfaces (2) face each other in pairs and respectively correspond to the opening grooves (5-1) on the knife sharpening bracket (5). The first guide groove (1-5) and the first knob (1-7) face each other in pairs and respectively correspond to the cowhide (8-2) on the knife sharpening bracket (5); One side of the first bracket (1) corresponding to the first mounting groove (1-1) is a fourth inclined surface (1-12); On the outer side surface of the first knob cover (1-7-3), a second anti-slip portion (1-7-5) is provided; At the connection between the connection section A (6-1) and the connection section B (6-2) of the third connecting member (6), a third buffer portion (6-6) for abutting against the sharpening rod (8-1) is provided; The connection section A (6-1) further has a third through hole (6-1-5); The knurled portion (6-1-4) is located at a position on the connection section A (6-1) close to the connection section B (6-2).

14. The knife sharpener according to claim 12, characterized in that: A fourth internal thread (1-13-2) is provided in the first connection groove (1-13). A fourth external thread (6-2-4) is provided on the outer side surface of the connection section B (6-2) of the third connecting member (6). The fourth internal thread (1-13-2) and the fourth external thread (6-2-4) are matched to realize the connection between the first bracket (1) and the third connecting member (6); The third knob cover (5-3-1) of the third knob (5-3) is in the shape of a frustum of a cone. A third anti-slip portion (5-3-2) is provided on the outer side surface of the third knob cover (5-3-1). A fourth anti-slip portion (5-3-3) is provided at the top of the third knob cover (5-3-1). The fourth anti-slip portion (5-3-3) includes a plurality of annular anti-slip lines; On the first inclined surface (2-1) of the first inclined surface body (2), a third guiding portion (2-1-3) is provided; On the outer side surface of the first angle adjustment knob (4), a first anti-slip portion (4-1) is provided; A reserved gap (5-4) is provided between the third knob cover (5-3-1) and the top end of the knife sharpening bracket (5). A first buffer portion (5-4-1) is provided in the reserved gap; At the bottom of the first bracket (1), a first convex portion (1-15) is provided. The first convex portion (1-15) is embedded in the inner side wall of the top of the first angle adjustment knob (4); A second buffer part (5-4-2) is further provided between the connection section A (6-1) of the third connection part (6) and the tapered rod (8-3); and / or the inner bottom wall (7-7-1) of the handle (7) corresponding to the fourth through hole (7-7) is an arc surface; and / or a fourth protruding part (7-2-8) is provided on one side of the arrow-twisting tooth (7-2-7) facing the inside of the handle (7).

15. A sharpener according to any one of claims 11 to 14, characterized in that: The first bracket (1) is connected to one end of the handle (7); and / or the inside of the handle (7) is hollow to form a fourth storage space (7-1) for storing the sharpening part; and / or the other end of the handle (7) is connected to the end cap (7-2), the end cap (7-2) is provided with a plurality of arrow-twisting teeth (7-2-7), and the arrow-twisting teeth (7-2-7) form a fourth hollow part (7-2-1) for twisting the arrowhead; and / or a fourth mounting hole (7-4) for mounting a hand rope is provided at the other end of the handle (7), a fifth mounting hole (7-2-2) is provided at the position corresponding to the fourth mounting hole (7-4) on the end cap (7-2), and the fifth mounting hole (7-2-2) and the fourth hollow part (7-2-1) are communicated through a zigzag channel (7-2-3); and / or the end cap (7-2) is provided with a fourth buckle (7-2-6), the other end of the handle (7) is provided with a fourth through hole (7-7), and the fourth buckle (7-2-6) and the fourth through hole (7-7) are matched to realize the detachable connection between the handle (7) and the end cap (7-2); and / or the end cap (7-2) is provided with a second positioning convex block (7-2-4), the other end of the handle (7) is provided with a second positioning groove (7-5), and the second positioning convex block (7-2-4) and the second positioning groove (7-5) are matched; and / or a second limiting block (7-6) is provided on the outer side surface of the other end of the handle (7), and a second limiting groove (7-2-5) is provided on the inner side wall of the end cap (7-2), and the second limiting block (7-6) and the second limiting groove (7-2-5) are matched; and / or the arc length of the cross section of the opening part (5-1-1) is less than or equal to one-half of the circumference of the circle where the cross section of the opening groove (5-1) is located; The sharpening part further includes a tapered rod (8-3), the tapered rod (8-3) is provided with a hook-grinding groove (8-3-1) for grinding fishhooks, the thicker end of the tapered rod (8-3) and the hook-grinding groove (8-3-1) is an extension section (8-3-2), and after the tapered rod (8-3) is connected to the first bracket (1), a part of the extension section (8-3-2) is located outside the first bracket (1); and / or the first mounting groove (1-1) communicates the inside and outside of the first bracket (1); and / or the top of the first angle adjustment knob (4) abuts against the bottom of the first bracket (1), and the bottom of the first angle adjustment knob (4) abuts against the handle (7); and / or the bottom of the push tube (3) is axially limited by the handle (7); and / or the metal insert (6-3) is an iron shaft or a stainless steel shaft; and / or the first connection groove (1-13) is located on the axis of the first bracket (1); And / or one end of the first connection groove (1-13) of the first bracket (1) is connected to the third connecting member (6), the other end of the first connection groove (1-13) is connected to the threaded sleeve insert (9), and the threaded sleeve insert (9) is connected to one end of the handle (7) through a bolt member; And / or the thicker end of the taper bar (8-3) is provided with a third external thread (8-3-3), and the third external thread (8-3-3) is matched with the third internal thread (9-1) of the threaded sleeve insert (9) to realize the connection between the taper bar (8-3) and the first bracket (1); And / or a third inclined surface (1-9) is provided at a position corresponding to the top of the first guide groove (1-5) on the first bracket (1); And / or reinforcing ribs (7-9) are further provided on the inner side wall of the handle (7), and a third positioning concave portion (5-5) is provided on the outer side wall of the knife sharpening bracket (5), and the reinforcing ribs (7-9) are matched with the third positioning concave portion (5-5); And / or the knife sharpening bar (8-1) is a hollow bar.

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