Blade clamp assembly and sharpener

Abstract

To provide a blade clamping assembly which eliminates the need for frequent use of an internal hexagonal ramp wrench and shortens the time required for clamping and removing a blade. [Solution] The blade clamping assembly comprises an arm body and a clamp arm member, the arm body being provided with a push-up pin and a drive member, the drive member driving the push-up pin to move along the axial direction of the arm body, the clamp arm member comprising a first clamp arm and a second clamp arm, the two clamp arms being mirror images and connected in a rotating manner by a rotation shaft, the rotation shaft being connected to a second end of the arm body, a torsion member being provided on the rotation shaft, the torsion member applying a torsional force to the two clamp arms, the first ends of the two clamp arms together clamping the push-up pin, and when the push-up pin moves, the two clamp arms rotate synchronously to close the second ends of the two clamp arms against each other to clamp the blade, or move away from each other to release the blade.

Description

[Technical field]

[0001] The present invention relates to the art of kitchenware, and more particularly to knife clamp assemblies and sharpeners. [Background technology]

[0002] The design of the traditional knife jig on the sharpener includes two locking methods, one is single-sided locking and the other is double-sided locking. For single-sided locking, the biggest problem is that it cannot ensure the stability of the angle on both sides of the knife, and it is necessary to frequently remove the clamped knife with the wrench ramp tool to achieve the stability of the angle, and the grinding process needs to be disassembled dozens of times to ensure that the two-sided angles of the knife grinding are consistent, which is very cumbersome; for double-sided locking, it can ensure the stability of the angle on both sides, but it needs to be locked with the help of the internal hexagon ramp wrench to achieve the clamping of the knife and has the function of double-sided reversal, but the internal hexagon wrench has complicated operation steps, women have small hand strength, the pin hole is easy to slip, it is not durable, the life is short, it is troublesome, and it is very difficult for women to use. Summary of the Invention [Problem to be solved by the invention]

[0003] In view of the above problems existing in the prior art, embodiments of the present invention aim to provide a knife clamping assembly and sharpener that eliminates the need for frequent use of an internal hexagonal ramp wrench and shortens the time required to clamp and remove a knife compared to conventional clamping assemblies that clamp knives. [Means for solving the problem]

[0004] The technical solutions in which the embodiments of the present invention are used are as follows:

[0005] A blade clamping assembly for use with a sharpener, the sharpener being provided with a sharpening holder; The blade clamp assembly includes an arm body and a clamp arm member. A first end of the arm body is used to connect to the sharpening holder, and a push-up pin and a driving member are provided on the arm body, and the driving member is used to drive the push-up pin to move along the axial direction of the arm body; the clamp arm member comprises a first clamp arm and a second clamp arm, the first clamp arm and the second clamp arm being mirror images of each other, the first clamp arm and the second clamp arm being rotatably connected by a rotation shaft, the rotation shaft being connected to a second end of the arm body, a torsion member being provided on the rotation shaft, the torsion member being used to apply a torsion force to the two clamp arms such that a first end of the first clamp arm and a first end of the second clamp arm together clamp the push-up pin; When the thrust pin moves, the first clamp arm and the second clamp arm can rotate synchronously, causing the second end of the first clamp arm and the second end of the second clamp arm to close together to clamp a blade, or move apart to release the blade.

[0006] Furthermore, the shape of the push-up pin is a trapezoidal block, and a first side wall surface and a second side wall surface of the push-up pin are mirror-symmetric with respect to a plane of symmetry between the first clamp arm and the second clamp arm; A first side wall surface of the push-up pin abuts against a first end of the first clamp arm, and a second side wall surface of the push-up pin abuts against a first end of the second clamp arm.

[0007] Furthermore, the driving member is a driving nut, which is located on one side away from the rotation axis of the thrust pin and abuts against the thrust pin, the driving nut is connected to the arm body by a screw, and the driving nut is rotatable relative to the arm body and drives the thrust pin to approach the rotation axis.

[0008] Further, the arm body comprises a first arm body, a second arm body and a rotating sleeve, a first end of the first arm body is used for connecting to the sharpening holder, a first end of the second arm body is connected to the push-up pin, the rotating sleeve is fixedly connected to the second end of one of the two arm bodies and is screwed to the second end of the other, and the push-up pin and the driving member are respectively located on the second arm body.

[0009] Furthermore, the blade clamping assembly further comprises a rotary joint connecting a first end of the arm body and the sharpening holder, and the rotary joint allows the arm body to pivot relative to the sharpening holder.

[0010] A sharpener, A sharpening stand for fixing the whetstone; a sharpening holder provided on the sharpening base and movable relative to the sharpening base; and a blade clamping assembly as described in any of the above embodiments, connected to the sharpening holder and movable with the sharpening holder to sharpen a blade with a grindstone.

[0011] Furthermore, the sharpening base is provided with a first guide member on one side away from the grindstone, The sharpener further comprises a sliding base, the sliding base is provided with a second guide member, and the first guide member and the second guide member are combined with each other so that the sliding base can slide relative to the sharpening base; The sharpening holder is connected to the sliding base and is slidable together with the sliding base.

[0012] Further, the sharpening holder includes a first side bracket and a second side bracket spaced apart from each other, and a crossbar connecting the first side bracket and the second side bracket, the crossbar is above the sharpening platform, and a first end of the arm body is connected to the crossbar; The first side bracket is located on a first side of the sharpening base, and the second side bracket is located on a second side of the sharpening base, the first side bracket and the second side bracket are respectively rotatably connected to the sharpening base, and a clamping mechanism is respectively provided between the first side bracket, the second side bracket and the sharpening base, and the clamping mechanism is used to fix the sharpening holder and limit its rotation.

[0013] Furthermore, the tightening mechanism includes: An arc-shaped guide groove is provided in the first side bracket and / or the second side bracket, and the extending direction of the arc-shaped guide groove coincides with the rotation direction of the first side bracket / the rotation direction of the second side bracket; a screw hole provided in the sliding base and facing the arc-shaped guide groove; The sharpening holder is provided with a clamping screw which is drilled into the arc-shaped guide groove and the screw hole, respectively, and which can be rotated to fix the sharpening holder.

[0014] The sharpener further includes a first movable plate and a second movable plate, the first movable plate and the second movable plate are respectively movably connected to the sharpening base, and the two movable plates are respectively movable relative to the sharpening base, and the two movable plates are moved away from each other to fix the sharpening base to the water tank, or moved toward each other to remove the sharpening base from the water tank; And / or, the sharpener further comprises a third movable plate and a fourth movable plate, the third movable plate and the fourth movable plate are each movably connected to the sharpening base, the two movable plates are each movable relative to the sharpening base, and the two movable plates move toward each other to fix the whetstone or move away from each other to remove the whetstone. Effect of the Invention

[0015] Compared with the prior art, the beneficial effects of the embodiments of the present invention are as follows:

[0016] The blade clamping assembly of the present invention ensures that, in the case of a double-sided clamped blade, the clamping point of the blade is centered. Compared with blade clamping using conventional clamp assemblies, the removal of the blade using the blade clamping assembly of this embodiment eliminates the need for frequent use of an internal hexagonal ramp wrench. The clamping or removal of the blade by the arm clamp is controlled by moving the push-up pin, significantly shortening the time it takes to clamp and remove the blade.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to be restrictive of the invention.

[0018] This summary of various implementations or examples of the technology described in the present disclosure is not an exhaustive disclosure of the full scope or every feature of the disclosed technology. [Brief description of the drawings]

[0019] In the drawings, which are not necessarily drawn to scale, the same reference numbers may refer to similar items in different drawings. The drawings generally illustrate various embodiments by way of example, not by way of limitation, and together with the specification and claims illustrate embodiments of the invention. Where appropriate, the same reference numbers are used in all the drawings to refer to the same or similar parts. [Figure 1] 1 is a schematic perspective view of a blade clamping assembly according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a front view of a push-up pin according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a perspective view of a sharpener according to an embodiment of the present invention taken from a first viewpoint; [Figure 4] FIG. 2 is a second perspective view of the sharpener according to the embodiment of the present invention; [Diagram 5] FIG. 2 is a front view of the sharpener according to the embodiment of the present invention. [Figure 6] FIG. 2 is a top view of the sharpener according to the embodiment of the present invention. [Figure 7] FIG. 4 is an enlarged view of the arc-shaped guide groove according to the embodiment of the present invention. [Figure 8] 2 is a perspective view of a sliding base according to an embodiment of the present invention; FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] In order to make the objectives, technical means and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in combination with the drawings in the embodiments of the present invention, and the clear and described embodiments are not all the embodiments but only some of the embodiments of the present application. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present invention.

[0021] Unless otherwise defined, technical or scientific terms used in the present invention should have the ordinary meaning as understood by those skilled in the art. The terms "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are used only to distinguish different components. Similar terms such as "comprise" or "contain" mean that the element or thing appearing before the term covers the element or thing listed after the term and its equivalents, and does not exclude other elements or things. Similar terms such as "connect" or "connected" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left", "right" and the like are used only to indicate relative positional relationships, and when the absolute positions of the described objects are changed, the relative positions may change accordingly.

[0022] For clarity and conciseness of the following description of the embodiments of the present invention, the present invention omits detailed descriptions of known features and components.

[0023] This embodiment provides a blade clamping assembly for use in a sharpener, in which a sharpening holder 5 is provided, the blade clamping assembly is connected to the sharpening holder 5, and the blade clamping assembly is used to clamp a blade, and the grinding wheel grinds the blade through the movement of the sharpening holder 5.

[0024] As shown in FIG. 1, the blade clamp assembly mainly comprises an arm body 1 and a clamp arm member 2.

[0025] A first end of the arm body 1 is used for connecting to the sharpening holder 5, and a push-up pin 15 and a driving member 14 are provided on the arm body 1, and the driving member 14 is used for driving the push-up pin 15 to move back and forth along the axial direction of the arm body 1.

[0026] The clamp arm member 2 includes a first clamp arm 21 and a second clamp arm 22, and the first clamp arm 21 and the second clamp arm 22 are mirror images.

[0027] The first clamp arm 21 and the second clamp arm 22 are connected to rotate via a rotating shaft 23, which is connected to a second end of the arm body 1. A torsion member is provided on the rotating shaft 23, and the torsion member applies a torsion force to the two clamp arms so that the first end of the first clamp arm 21 and the first end of the second clamp arm 22 both clamp the push-up pin 15, i.e., in a natural state, the clamp arm member 2 sandwiches the push-up pin 15.

[0028] When the thrust pin 15 moves, the first clamp arm 21 and the second clamp arm 22 can rotate synchronously, causing the second end of the first clamp arm 21 and the second end of the second clamp arm 22 to close against each other to clamp a blade, or move away from each other to release the blade.

[0029] As shown in FIG. 1, when the thrust pin 15 moves in a direction toward the rotation shaft 23, the second end of the first clamp arm 21 and the second end of the second clamp arm 22 close to each other to clamp the blade, and when the thrust pin 15 moves in a direction away from the rotation shaft 23, the second end of the first clamp arm 21 and the second end of the second clamp arm 22 move away from each other to release the blade.

[0030] The blade clamping assembly of the present invention ensures that the clamping points of the blade are centered when clamping a blade on both sides, and compared with blade clamping using conventional clamp assemblies, the blade removal using the blade clamping assembly of this embodiment eliminates the need for frequent use of an internal hexagonal ramp wrench, and the clamping or removal of the blade by the clamp arm is controlled by the movement of the thrust pin 15, significantly shortening the time it takes to clamp and remove the blade.

[0031] As shown in FIG. 2, in some embodiments, the shape of the push-up pin 15 may be a trapezoidal block, and is fitted into the arm body 1 so as to be slidable in the axial direction of the arm body 1, and the first side wall surface 151 and the second side wall surface 152 of the push-up pin 15 are mirror-symmetric with respect to the plane of symmetry between the first clamp arm 21 and the second clamp arm 22.

[0032] A first side wall surface 151 of the push-up pin 15 abuts against a first end of the first clamp arm 21, and a second side wall surface 152 of the push-up pin 15 abuts against a first end of the second clamp arm 22. Since the first side wall surface 151 and the second side wall surface 152 of the push-up pin 15 are both inclined surfaces, when the push-up pin 15 rotates in a direction away from the rotation shaft 23, the first ends of the two clamp arms can slide along the corresponding inclined surfaces, respectively, facilitating rotation of the two clamp arms.

[0033] Preferably, the shapes of the first side wall surface 151 and the second side wall surface 152 of the thrust pin 15 in this embodiment are both arc-shaped surfaces, thus making it easier for the first ends of the two clamp arms to slide along the corresponding inclined surfaces.

[0034] The structure of the push-up pin 15 in this embodiment combines two symmetrically arranged clamp arms, so that the center line can be automatically centered during the clamping process of the blade, eliminating the need for frequent adjustment of the jig.

[0035] As shown in FIG. 1, in some embodiments, the first clamp arm 21 and the second clamp arm 22 may each be a plate structure, thus increasing the contact area between the two clamp arms and the blade, thereby ensuring the stability of the clamped blade.

[0036] As shown in FIG. 2, in some embodiments, the front wall surface 153 and the rear wall surface 154 of the thrust pin 15 may be flat, and the front wall surface 153 may be directly abutted against the thrust pin 15, and the rear wall surface 154 may be directly connected to the driving member 14.

[0037] As shown in FIG. 1, in some embodiments, the drive member 14 may be a drive nut, which is located on one side away from the rotation axis 23 of the thrust pin 15 and abuts against the rear wall surface 154 of the thrust pin 15.

[0038] The drive nut 49 is connected to the arm body 1 by a screw, and the push-up pin 15 is fitted into the arm body 1 so as to be able to fit with the arm body 1 with a gap therebetween, and by rotating the drive nut 49, the push-up pin 15 is brought closer to the rotation shaft 23, and further the two clamp arms clamp the blade.

[0039] For example, by rotating the drive nut 49 clockwise, the thrust pin 15 is moved forward, and the second ends of the two clamp arms are closed together to clamp the blade, and by rotating the drive nut 49 counterclockwise, the force between the two inclined side wall surfaces of the thrust pin 15 and the two clamp arms moves the thrust pin 15 backward, thereby separating the second ends of the two clamp arms to release the blade.

[0040] Rotating the drive nut 49 moves the push-up pin 15, which saves labor and allows one woman to easily clamp the blade, expanding the number of users. In addition, the self-locking action between the drive nut 49 and the arm body 1 ensures the stability of the two clamp arms clamping the blade, preventing the blade from falling off or injuring the hand.

[0041] Of course, in some other embodiments, the driving member 14 can adopt other structural forms, for example, the driving member 14 can be an extendable driving member, the driving member 14 is fixed to the arm body 1, the extendable end of the driving member 14 is connected to the push-up pin 15, and the extendable movement of the driving member 14 controls the movement of the push-up pin 15 along the axial direction of the arm body 1.

[0042] As shown in FIG. 1, in some embodiments, the arm body 1 may include at least three parts: a first arm body 11, a second arm body 13, and a rotating sleeve 12.

[0043] Here, the rotating sleeve 12 is located between the first arm body 11 and the second arm body 13, the first end of the first arm body 11 forms the first end of the entire arm body 1 and is used to connect to the sharpening holder 5, and the first end of the second arm body 13 forms the second end of the entire arm body 1 and is used to connect to the thrust pin 15.

[0044] The rotating sleeve 12 is fixedly connected to the second end of one of the two arm bodies 1 and is screwed to the second end of the other arm body 1, and the push-up pin 15 and the driving member 14 are respectively located on the second arm body 13. In this way, when one side of the blade is ground and then the other side is to be ground, the blade can be turned over by rotating the arm body 1 or the rotating sleeve 12, and thus the angles of both sides of the blade during the grinding process are kept consistent, and there is no need to remove the blade, which saves time and labor.

[0045] The rotating sleeve 12 is fixedly connected to the second end of one of the two arm bodies 1, and screwed to the second end of the other arm body 1, meaning that the rotating sleeve 12 is fixedly connected to the second end of the first arm body 11, and screwed to the second end of the second arm body 13, and by rotating the second arm body 13, the inversion of the clamp arm member 2 is controlled and the inversion of the blade surface is also realized.

[0046] Alternatively, the rotating sleeve 12 is connected to the second end of the first arm body 11 by a screw and fixedly connected to the second end of the second arm body 13, and by rotating the rotating sleeve 12, the inversion of the clamp arm member 2 is controlled, thereby realizing the inversion of the blade face.

[0047] As shown in FIG. 1, in some embodiments, the blade clamp assembly may further include a rotary joint 3, which connects a first end of the arm body 1 and a sharpening holder 5, and is used to pivot the arm body 1 relative to the sharpening holder 5 to adjust the position of the blade relative to the grindstone.

[0048] Here, the rotary joint 3 can include a first joint 31 and / or a second joint 32. The first joint 31 can be used to control the up-down swing of the arm body 1 relative to the sharpening holder 5, and the first joint 31 can have a bearing structure or the like. The second joint 32 can be used to control the left-right swing of the arm body 1 relative to the sharpening holder 5, and the second joint 32 can have a hinge structure or the like.

[0049] As shown in FIG. 1, when the rotary joint 3 includes a first joint 31 and a second joint 32, the first joint 31 can be directly connected to the sharpening holder 5, and the second joint 32 is connected to the first joint 31 and a first end of the arm body 1. The combination of the first joint 31 and the second joint 32 can not only realize the up-down swing of the arm body 1 relative to the sharpening holder 5, but also realize the left-right swing of the arm body 1 relative to the sharpening holder 5. The two joints, the first joint 31 and the second joint 32, together constitute a four-axis movement of up-down, left-right, and right-left, which ensures the left-right swing at a large angle required in the grinding process, ensures that blades of different lengths can be ground by the grindstone, and realizes self-adaptation in grinding various blade types.

[0050] As shown in Figs. 3 to 6, an embodiment of the present invention further provides a sharpener, which mainly includes a sharpening base 4, a sharpening holder 5 and a blade clamping assembly as described in any of the above embodiments.

[0051] The sharpening base 4 can be used to secure a grinding wheel (not shown), which is removably connected to the sharpening base 4 to facilitate easy replacement of the grinding wheel.

[0052] The sharpening holder 5 is mounted on the sharpening base 4 and is movable relative to the sharpening base 4 .

[0053] A first end of the arm body 1 in the blade clamping assembly is connected to a sharpening holder 5 and is movable together with the sharpening holder 5 to grind a blade clamped to the clamp arm member 2 with a grindstone.

[0054] The sharpener keeps the angles of both sides consistent during the sharpening process of the blade, so there is no need to change sides, and clamping the blade saves time and effort.

[0055] In some embodiments, a first guide member is provided on one side of the sharpening seat 4 away from the grindstone.

[0056] The sharpener further includes a sliding base 6, a second guide member is provided on the sliding base 6, and by combining the first guide member and the second guide member with each other, the sliding base 6 is slidable relative to the sharpening base 4, and the sharpening holder 5 is connected to the sliding base 6 and is slidable together with the sliding base 6.

[0057] As shown in Figures 3 and 4, in this embodiment, the grinding holder 5 is fixed on the upper surface of the grindstone, the first guide member is installed on the lower surface of the grindstone, and the two guide members are combined at the bottom of the grindstone, thus preventing the mud and iron powder generated during the grinding process from falling onto the two guide members and affecting the sliding of the sliding base 6.

[0058] In some embodiments, the first guide members may be sliding grooves 46 on opposite sides of the bottom of the sharpening base 4, with the groove mouths of the sliding grooves 46 on both sides facing each other, and the extension direction of the sliding grooves 46 coinciding with the movement direction of the sliding base 6.

[0059] As shown in FIG. 8, the second guide member may be a bearing roller 65 provided on the sliding base 6, and the sliding grooves 46 on both sides of the sharpening base 4 correspond to the two bearing rollers 65, respectively, and the bearing rollers 65 are fitted into the sliding grooves 46. The combination of the bearing rollers 65 and the sliding grooves 46 can realize high-precision, low-friction sliding of the sliding base 6, which is also quiet and has a long life.

[0060] As shown in FIG. 8, in some embodiments, the sliding base 6 has two pairs of bearing rollers 65 each having an open groove 66 on one side thereof, and the extending direction of the two open grooves 66 coincides with the sliding direction.

[0061] In addition, an adjustment bolt 63 is provided on each side of the sliding base 6 along its moving direction, and the two adjustment bolts 63 are respectively fitted inside the sliding base 6 and respectively inserted into the opening groove 66, and the ends of the two adjustment bolts 63 are abutted against the side walls of the opening groove 66. By rotating the two adjustment bolts 63, the width of the opening groove 66 can be fine-tuned, and the distance between the two sets of bearing rollers 65 can be adjusted, so that the bearing rollers 65 are in close contact with the groove walls of the opening groove 66, and the sliding stability of the bearing rollers 65 is further ensured.

[0062] As shown in FIG. 8, in some embodiments, the sliding base 6 may be provided with a first limit member 67, and the bottom of the sharpening base 4 is provided with a second limit member 45 at both ends in the moving direction of the sliding base 6, respectively. When the sliding base 6 moves to both ends close to the sharpening base 4, the first limit member 67 can come into contact with the second limit member 45, thereby preventing the bearing roller 65 on the sliding base 6 from escaping from the sliding groove 46 of the sharpening base 4.

[0063] Of course, in some other embodiments, the structural form adopted by the first guide member and the second guide member can achieve a slidable combination of high precision and low friction, for example, the first guide member can be a smooth rod and the second guide member can be a ball bearing, or the first guide member can be a ball bearing and the second guide member can be a smooth rod.

[0064] As shown in Figures 3 and 5, in some embodiments, the sharpening holder 5 comprises a first side bracket 51 and a second side bracket 52 arranged with a gap therebetween, and a crossbar 53 connecting the first side bracket 51 and the second side bracket 52, the crossbar 53 is located above the sharpening base 4, the whetstone is located below the crossbar 53, and the first end of the arm body 1 is connected to the crossbar 53. In this way, the user can hold a blade with both hands and slide it back and forth on the whetstone to sharpen the blade, and the structure of the sharpening holder 5 is simple and does not prevent the user from holding the blade in his or her hands.

[0065] The first side bracket 51 is on a first side of the sharpening base 4, and the second side bracket 52 is on a second side of the sharpening base 4. The first side bracket 51 and the second side bracket 52 are respectively rotatably connected to the sharpening base 4. The two side brackets are rotatable at the same time, which realizes the rotation of the sharpening holder 5 relative to the sharpening base 4, adjusts the angle between the blade of the knife and the whetstone, and better realizes sharpening of the knife.

[0066] As shown in Figures 3 and 8, in some embodiments, the sliding base 6 and the two side brackets are provided with pin shaft holes arranged coaxially, and a pin shaft 55 is drilled into the pin shaft hole on the sliding base 6 and the pin shaft hole on the side brackets, respectively, to realize a rotatable connection between the side brackets and the sliding base 6.

[0067] Furthermore, in some embodiments, a clamping mechanism is provided between the first side bracket 51 and the second side bracket 52 and the sharpening base 4, respectively, and the clamping mechanism is used to fix the sharpening holder 5. After the user rotates the two side brackets to adjust the angle between the blade and the whetstone, the clamping mechanism can fix the sharpening holder 5 and the sliding base 6, so that the user can prevent the holder 5 from rotating during sharpening and maintain the stability of the grinding angle during movement.

[0068] As shown in FIGS. 3 and 8, in some embodiments, the fastening mechanism for fixing the sharpening holder 5 and the sliding base 6 mainly includes an arc-shaped guide groove 56, a screw hole 62 and a fastening screw 54.

[0069] An arc-shaped guide groove 56 is provided penetrating both opposing sides of the first side bracket 51 and the second side bracket 52. The extending direction of the arc-shaped guide groove 56 coincides with the rotation direction of the two side brackets.

[0070] The screw hole 62 is provided in the sliding base 6 and faces the arc-shaped guide groove 56. The clamping screws 54 are respectively drilled in the arc-shaped guide groove 56 and the screw hole 62. By rotating the clamping screws 54, the two side brackets and the sliding base 6 can be brought into close contact with each other, and the sharpening holder 5 can be fixed.

[0071] Preferably, the clamping screw 54 in this embodiment can adopt a ram horn screw, which can realize torque locking without the use of tools such as external wrenches. As a structural member, the sharpening holder 5 can adjust the angle in 1 second and lock it in 2 seconds, ensuring that it does not shake during grinding, realizing easier, more efficient and more convenient angle adjustment, and ensuring the effect of blade grinding.

[0072] Of course, in some other embodiments, the arc-shaped guide groove 56 may be provided on the sliding base 6, and correspondingly, the screw holes 62 may be provided on the two side brackets, and the fastening screws 54 may be drilled into the arc-shaped guide groove 56 and the screw holes 62 respectively to fix the sharpening base 4.

[0073] In some embodiments, an angular positioning mechanism may be provided between the sharpening holder 5 and the sliding base 6, and as shown in Figures 3 and 8, the angular positioning mechanism may include positioning grooves provided in the two side brackets and a positioning button 64 provided on the sliding base 6. The positioning buttons 64 are located at both ends of the sliding base 6 in the moving direction.

[0074] The positioning groove is also arc-shaped, and its extending direction coincides with the rotation direction of the two side brackets, and the positioning groove is formed by a plurality of sequentially arranged spherical grooves 57 communicating with each other. The positioning button 64 is movably mounted on the sliding base 6 and can move up and down relative to the sliding base 6, and the positioning button 64 is always fitted into the spherical groove 57 of the positioning groove, and after the sharpening holder 5 rotates to a certain angle, the positioning button 64 is fitted into the corresponding spherical groove 57 at this angle to realize the initial positioning of the sharpening holder 5, and then the sharpening holder 5 and the sliding base 6 are clamped and connected by the clamping mechanism.

[0075] In addition, since the positioning button 64 can slide up and down relative to the sliding base 6, the positioning button 64 is constantly pressed during the process of rotation of the sharpening holder 5 or the two side brackets, so that its position is adjusted between the multiple spherical grooves 57.

[0076] 3 to 6, in some embodiments, the sharpener further includes a first movable plate 41 and a second movable plate 42. The first movable plate 41 is on a first side of the sharpening base 4, and the second movable plate 42 is on a second side of the sharpening holder 5. The first and second sides of the sharpening base 4 face each other.

[0077] The first movable plate 41 and the second movable plate 42 are each movably connected to the sharpening base 4, and the two movable plates are each movable relative to the sharpening base 4, moving toward or away from each other, thereby fixing the sharpening base 4 to the water tank or removing the sharpening base 4 from the water tank.

[0078] Specifically, there are two cases. One is that the two movable plates can move relative to the grinding base 4 and are spaced apart from each other, thereby fixing the grinding base 4 to the water tank. For example, when the two movable plates are spaced apart from each other, they can be respectively attached to the tank wall of the water tank, and the entire grinding base 4 is fixed above the water tank, so that grinding is performed above the water tank, and the initial dust can be washed away by washing with water flow. The whetstone abrasives are all natural ingredients, so there is no environmental pollution. Water washing grinding can quickly wash away mud and iron filings, and the sharpness of the grinding angle and the jaggedness of the cutting edge are uniform, and the sharpness is also better. When it is necessary to remove the grinding base 4 from the water tank, the two movable plates can be controlled to approach each other, so that the distance between the two movable plates is reduced and the two movable plates do not abut the tank wall of the water tank, and the grinding base 4 can be easily removed from the water tank.

[0079] Furthermore, the two movable plates are respectively movable relative to the sharpening base 4 and approach each other, thereby fixing the sharpening base 4 to the water tank. For example, when the two movable plates approach each other, they respectively come into contact with the outer wall of the water tank accordingly, that is, the whole sharpening base 4 is sandwiched in the water tank by the two movable plates, and the whole sharpening base 4 is fixed above the water tank. When it is necessary to remove the sharpening base 4 from the water tank, the two movable plates can be controlled to move away from each other, so that the distance between the two movable plates is greater than the diameter of the groove mouth of the water tank, and the two movable plates no longer come into contact with the outer wall of the water tank, thereby realizing the separation of the sharpening base 4 from the water tank.

[0080] The structure of the sharpener in this embodiment is compatible with different sizes of fish tanks and can be used in different home environments, making the applicable home surface area wider, while at the same time achieving more effective, neater and more hygienic effects.

[0081] This embodiment adopts an expandable means to accommodate different sizes of aquariums, and can be used in different home environments, making the applicable home surface area wider, while at the same time achieving a more effective, cleaner and more hygienic effect.

[0082] In some embodiments, the first movable plate 41 and the second movable plate 42 are respectively connected to the sharpening base 4 via a smooth rod 47, the length direction of the smooth rod 47 coincides with the moving direction of the movable plates, and the smooth rod 47 can ensure the stability of the sliding of the first movable plate 41 and the second movable plate 42. The telescopic driving method of the first movable plate 41 and the second movable plate 42 is not specifically limited, and a structure of a screw 48 and a nut 49 may be adopted, or a telescopic structure for telescopically extending the driving member 14 may be adopted.

[0083] As shown in FIGS. 3 to 6, in some embodiments, the sharpener may further include a third movable plate 43 and a fourth movable plate 44.

[0084] The third movable plate 43 and the fourth movable plate 44 are each movably connected to the sharpening base 4, and the two movable plates are each movable relative to the sharpening base 45, and can move toward each other to fix the whetstone, or move away from each other to remove the whetstone. That is, the third movable plate 43 and the fourth movable plate 44 can realize clamping and releasing of the whetstone. As shown in FIG. 3, the third movable plate 43 and the fourth movable plate 44 can each be provided with a support 410, so that the sharpening base 45 is engaged with the top of the water tank.

[0085] In some embodiments, the sharpening base 4 may be elongated, and the first movable plate 41 and the second movable plate 42 may be located at both ends in the length direction of the sharpening base 4. The first movable plate 41 and the second movable plate 42 may be slidably connected to both ends in the length direction of the sharpening base 4, respectively.

[0086] Furthermore, in some embodiments, the third movable plate 43 and the fourth movable plate 44 are located between the first movable plate 41 and the second movable plate 42, respectively, and the sharpening base 4 is provided with an escape groove for positioning the third movable plate 43 and the fourth movable plate 44, respectively, a screw 48 drilled into the escape groove, and a nut 49 screwed and connected to the screw 48.

[0087] The third movable plate 43 and the fourth movable plate 44 can be engaged in the undercut groove and fitted onto the screw 48. The third movable plate 43 is located on one side of the nut 49 away from the first movable plate 41, and the fourth movable plate 44 is located on one side of the nut 49 away from the second movable plate 42. One end of the nut 49 is connected to the first movable plate 41 and the second movable plate 42, respectively, so that when the first movable plate 41 and the second movable plate 42 move, the screw 49 can be moved forward and backward in conjunction with each other, and the third movable plate 43 and the fourth movable plate 44 can be moved closer to each other by rotating the nut 49, thereby adjusting the gap between them.

[0088] Furthermore, the specific mechanisms of the first movable plate 41, the second movable plate 42, the third movable plate 43 and the fourth movable plate 44 of this embodiment are not limited.

[0089] The above description is illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions, and variations to the above-described embodiments within the scope of the present disclosure. It is also contemplated that the above-described embodiments (or one or more of the means thereof) may be used in combination with each other, and that these embodiments may be combined with each other in various combinations or arrangements. [Explanation of symbols]

[0090] 1, arm body, 11, first arm body, 12, rotating sleeve, 13, second arm body, 14, driving member, 15, push-up pin, 151, first side wall surface, 152, second side wall surface, 153, front wall surface, 154, rear wall surface, 2, clamp arm member, 21, first clamp arm, 22, second clamp arm, 23, rotating shaft, 3, rotation joint, 31, first joint, 32, second joint, 4, sharpening base, 41, first movable plate, 410, support, 42, second movable plate, 43, third movable plate, 44, fourth movable plate, 45, second limit member, 46, sliding groove, 47, smooth rod, 48, screw, 49, nut, 5, sharpening holder, 51, first side bracket, 52, second side bracket, 53, crossbar, 54, tightening screw, 55, pin shaft, 56, arc-shaped guide groove, 57, spherical groove, 6, sliding base, 61, pin shaft hole, 62, screw hole, 63, adjustment bolt, 64, positioning button, 65, bearing roller, 66, opening groove, 67, first limit member.

Claims

1. A blade clamping assembly for use with a sharpener, the sharpener being provided with a sharpening holder; The blade clamp assembly includes an arm body and a clamp arm member. A first end of the arm body is used to connect to the sharpening holder, and a push-up pin and a driving member are provided on the arm body, and the driving member is used to drive the push-up pin to move along the axial direction of the arm body; the clamp arm member comprises a first clamp arm and a second clamp arm, the first clamp arm and the second clamp arm being mirror images of each other, the first clamp arm and the second clamp arm being rotatably connected by a rotation shaft, the rotation shaft being connected to a second end of the arm body, a torsion member being provided on the rotation shaft, the torsion member being used to apply a torsion force to the two clamp arms such that a first end of the first clamp arm and a first end of the second clamp arm together clamp the push-up pin; When the thrust pin moves, the first clamp arm and the second clamp arm can rotate synchronously, closing the second end of the first clamp arm and the second end of the second clamp arm against each other to clamp a blade, or moving away from each other to release the blade.

2. the shape of the push-up pin is a trapezoidal block, and a first side wall surface of the push-up pin and a second side wall surface of the push-up pin are mirror-symmetric with respect to a plane of symmetry between the first clamp arm and the second clamp arm; 2. The blade clamp assembly of claim 1, wherein a first side wall surface of the push-up pin abuts against a first end of the first clamp arm, and a second side wall surface of the push-up pin abuts against a first end of the second clamp arm.

3. 3. The blade clamp assembly according to claim 2, wherein the driving member is a driving nut, the driving nut being located on one side away from the rotation axis of the thrust pin and abutting against the thrust pin, the driving nut being connected to the arm body by a screw, the driving nut being rotatable relative to the arm body, and driving the thrust pin to approach the rotation axis.

4. 2. The blade clamping assembly according to claim 1, wherein the arm body comprises a first arm body, a second arm body and a rotating sleeve, a first end of the first arm body is used for connecting to the sharpening holder, a first end of the second arm body is connected to the push-up pin, the rotating sleeve is fixedly connected to the second end of one of the two arm bodies and is screw-connected to the second end of the other, and the push-up pin and the driving member are respectively located in the second arm body.

5. 5. The blade clamping assembly of claim 4, further comprising a rotary joint connecting a first end of the arm body and the sharpening holder, the rotary joint enabling the arm body to pivot relative to the sharpening holder.

6. A sharpener, A sharpening stand for fixing the whetstone; a sharpening holder provided on the sharpening base and movable relative to the sharpening base; A sharpener comprising: a blade clamping assembly according to any one of claims 1 to 5, connected to the sharpening holder and movable together with the sharpening holder, for sharpening a blade with a grindstone.

7. The sharpening base is provided with a first guide member on one side away from the grindstone, The sharpener further comprises a sliding base, the sliding base is provided with a second guide member, and the first guide member and the second guide member are combined with each other so that the sliding base can slide relative to the sharpening base; 7. The sharpener according to claim 6, wherein the sharpening holder is connected to the sliding base and is slidable together with the sliding base.

8. The sharpening holder includes a first side bracket and a second side bracket spaced apart from each other, and a cross bar connecting the first side bracket and the second side bracket, the crossbar is above the sharpening platform, and a first end of the arm body is connected to the crossbar; The sharpener of claim 7, characterized in that the first side bracket is located on a first side of the sharpening base, the second side bracket is located on a second side of the sharpening base, the first side bracket and the second side bracket are each rotatably connected to the sharpening base, and a clamping mechanism is provided between the first side bracket and the sharpening base, and the second side bracket and the sharpening base, respectively, and the clamping mechanism is used to fix the sharpening holder and limit its rotation.

9. The tightening mechanism includes: An arc-shaped guide groove is provided in the first side bracket and / or the second side bracket, and the extending direction of the arc-shaped guide groove coincides with the rotation direction of the first side bracket / the rotation direction of the second side bracket; a screw hole provided in the sliding base and facing the arc-shaped guide groove; Each of the arc-shaped guide grooves and the screw holes has a fastening screw drilled therein, 9. The sharpener according to claim 8, wherein the clamping screw can be rotated to fix the sharpening holder.

10. The sharpener further includes a first movable plate and a second movable plate, the first movable plate and the second movable plate being movably connected to a sharpening base, the first movable plate and the second movable plate being movable relative to the sharpening base, and the first movable plate and the second movable plate being moved away from each other to fix the sharpening base to the water tank, or the first movable plate and the second movable plate being moved closer to each other to remove the sharpening base from the water tank; And / or the sharpener according to claim 6, further comprising a third movable plate and a fourth movable plate, the third movable plate and the fourth movable plate being movably connected to a sharpening base, the third movable plate and the fourth movable plate being movable relative to the sharpening base, and the third movable plate and the fourth movable plate being brought closer to each other to fix the whetstone, or the third movable plate and the fourth movable plate being moved away from each other to remove the whetstone.

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