Knife sharpener

Abstract

The invention relates to the technical field of knife sharpening tools, in particular to a knife sharpener which comprises a base assembly, and the base assembly can be supported on the surface of a base body. The shell is rotatably connected to the base assembly, and an accommodating space is formed in the shell; the knife sharpening mechanism is arranged in the containing space, the knife sharpening mechanism comprises a grinding element and a driving unit, and the driving unit drives the grinding element to rotate along the axis A; the shell is provided with a notch, and the blade part of the cutter penetrates into the notch and is in contact with the peripheral surface of the grinding element; the rotating shaft of the shell coincides with the axis A, the position of the notch can be adjusted by rotating the shell, and the knife sharpener is convenient for a user to use and consistent in grinding effect on a cutting edge.

Description

Technical Field

[0001] The present invention relates to the technical field of knife sharpening tools, and more specifically to a knife sharpener. Background Art

[0002] In daily life, people often use a variety of knives such as kitchen knives, fruit knives and scissors. After using these knives for a period of time, their edges become blunt and need to be sharpened again. The most primitive way of sharpening is to use a whetstone or a sharpening rod to sharpen the blade, which is time-consuming, labor-intensive and inconvenient to carry.

[0003] At present, there are some knife sharpeners that can greatly reduce the user's work intensity. Please refer to the new knife sharpener disclosed in the announcement number CN220279095U. When in use, the tool is placed in the tool slot, and the driving member drives the main shaft to rotate and drives the grinding element to rotate to grind the tool. The grinding element rotates at high speed to grind the tool, and the grinding efficiency is higher. It does not require manual effort to push and pull the tool, which is more labor-saving.

[0004] However, the tool slot and the body of the above-mentioned knife sharpener are fixed. Before the knife sharpening operation, the knife sharpener needs to be placed so that the tool slot is facing the user, and the knife is placed into the tool slot at a correct angle (the angle formed with the grinding element) to meet the knife sharpening operation requirements;

[0005] If the tool slot is not facing the user, and the user still places the tool into the tool slot at an angle when the tool slot is facing the user, the angle formed between the blade and the grinding element does not meet the standard, so the grinding effect of the grinding element on the blade is very poor (poor grinding consistency, over-grinding, under-grinding, etc.). Summary of the invention

[0006] In view of the shortcomings and defects of the prior art, a knife sharpener is provided which is easy for users to use and has a consistent sharpening effect on the blade.

[0007] A knife sharpener, comprising:

[0008] A base assembly, the base assembly being supportable on a substrate surface;

[0009] A housing, the housing being rotatably connected to the base assembly, and a receiving space being provided in the housing;

[0010] A knife sharpening mechanism is disposed in the accommodating space and comprises a grinding element and a driving unit.

[0011] The driving unit drives the grinding element to rotate along the axis A;

[0012] The housing is provided with a notch, wherein the cutting edge of the tool is inserted into the notch and contacts the peripheral surface of the grinding element;

[0013] The rotating shaft of the housing coincides with the axis A, and the position of the notch can be adjusted by rotating the housing.

[0014] After adopting the above structure, a knife sharpener of the present invention has the following advantages compared with the prior art: when in use, the outer shell can be rotated to adjust the position of the notch so that the user can place the blade into the notch. After the blade contacts the circumferential surface of the grinding element, the driving unit is started to drive the grinding element to rotate along the axis A, and the circumferential surface of the grinding element can grind the blade.

[0015] The rotating shaft of the housing is arranged coaxially with the axis A, and the notch maintains the same position aligned with the peripheral surface of the grinding element when the housing is rotated arbitrarily.

[0016] After the device is positioned, the housing is rotated to turn the notch toward the user, making it easier to place the blade into the notch and contact the grinding element at the correct angle for use, resulting in consistent and better grinding results.

[0017] As an improvement of the present invention, the housing and the base assembly are connected via a connecting piece.

[0018] The bottom of the shell is provided with a connecting portion that is contracted inwards, and a connecting hole is formed inside the connecting portion.

[0019] The lower part of the connecting member passes through the connecting hole and is fixed to the base assembly. The connecting member is provided with a limiting part that forms a blocking fit with the upper end surface of the connecting part. The upper end of the base assembly forms a blocking fit with the lower end surface of the connecting seat.

[0020] As an improvement of the present invention, the bottom of the shell is provided with annularly distributed teeth grooves, a positioning assembly is provided above the connecting piece, the positioning assembly includes an elastic piece, the inner end of the elastic piece is stopped against the connecting piece, the outer end of the elastic piece is provided with a positioning portion, and the elastic piece drives the positioning portion to elastically stop in the teeth grooves.

[0021] As an improvement of the present invention, a groove is provided on the upper part of the base assembly, and the connecting piece is a hollow structure, and the lower end thereof sinks into the groove.

[0022] The inner hole of the connecting member is provided with a driving unit frame, the driving unit is vertically arranged on the driving unit frame, and the lower end of the driving unit is synchronously arranged close to the bottom of the groove along with the lower end of the driving unit frame.

[0023] As an improvement of the present invention, the accommodating space is further provided with a circuit board electrically connected to the drive unit, and a battery, wherein the circuit board is provided with a button, and the button is exposed from the housing.

[0024] As an improvement of the present invention, the base assembly includes a connecting seat, a rotating seat, and a suction cup seat which are sequentially arranged from top to bottom, the groove is arranged above the connecting seat, the lower part of the connecting seat is fixed to the suction cup seat, a suction cup is arranged at the bottom of the suction cup seat, and a suction cup frame of the suction cup passes through the suction cup seat and extends to the inner side of the rotating seat;

[0025] The rotating axis of the rotating seat coincides with the rotating axis A, the suction cup frame is provided with a cross bar, the rotating seat is provided with a sleeve seat sleeved on the outer side of the upper end of the suction cup frame, the upper end of the sleeve seat is provided with a driving surface with a high undulation, and the driving surface is tightly pressed against the cross bar;

[0026] The rotating seat is rotated, and the rotating seat drives the sleeve seat to rotate, and the driving surface switches the position point that is pressed against the cross bar to drive the cross bar to rise or fall, thereby driving the adsorption plate to adsorb or release adsorption.

[0027] As an improvement of the present invention, the number of the notches is several and they are arranged around the rotation axis A at intervals. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention.

[0029] Figure 2 It is a cross-sectional structural schematic diagram of the present invention.

[0030] Figure 3 The present invention Figure 2 Stereoscopic diagram.

[0031] Figure 4 The present invention Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0032] Figure 5 It is a schematic diagram of the position structure of the tooth groove, the elastic member and the positioning part of the present invention.

[0033] Figure 6 It is a structural schematic diagram of components such as a rotating seat and a sleeve seat of the present invention.

[0034] As shown in the figure: 1. Base assembly; 1.1. Connecting seat; 1.11. Groove; 1.2. Rotating seat; 1.3. Suction cup seat; 2. Shell; 2.1. Accommodating space; 2.2. Notch; 2.3. Connecting part; 2.31. Connecting hole; 2.4. Tooth groove; 2.5. Upper shell; 2.6. Lower shell; 3. Grinding element; 4. Driving unit; 4.1. Driving unit frame; 5. Connecting part; 5.1. Limiting part; 6. Elastic part; 7. Positioning part; 8. Circuit board; 8.1. Button; 9. Battery; 10. Adsorption plate; 10.1. Suction cup frame; 10.11. Cross bar; 11. Sleeve; 11.1. Driving surface; 12. Spring. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] See also Figure 1-6 A knife sharpener, comprising:

[0037] A base assembly 1, the base assembly 1 can be supported on a substrate surface;

[0038] A housing 2, the housing 2 is rotatably connected to the base assembly 1, and a receiving space 2.1 is provided in the housing 2;

[0039] The knife sharpening mechanism is arranged in the accommodating space 2.1 and includes a sharpening element 3 and a driving unit 4.

[0040] The driving unit 4 drives the grinding element 3 to rotate along the axis A;

[0041] The housing 2 is provided with a notch 2.2, the notch 2.2 is for the cutting edge of the tool to penetrate and contact the peripheral surface of the grinding element 3;

[0042] The rotation axis of the housing 2 coincides with the axis A, and the position of the notch 2.2 can be adjusted by rotating the housing 2.

[0043] When in use, the housing 2 can be rotated to adjust the position of the notch 2.2 so that the user can place the blade into the notch 2.2. After the blade contacts the circumference of the grinding element 3, the drive unit 4 is started to drive the grinding element 3 to rotate along the axis A, and the circumference of the grinding element 3 can grind the blade.

[0044] The rotation axis of the housing 2 is arranged coaxially with the axis A, and the notch 2.2 maintains the same position aligned with the circumference of the grinding element 3 when the housing 2 is rotated arbitrarily.

[0045] After placing the device, the housing 2 is rotated to rotate the notch 2.2 to face the user, so that the blade can be placed in the notch 2.2 to contact the grinding element 3 and contact the grinding element 3 at the correct use angle, so that the grinding effect is consistent and better.

[0046] The grinding element 3 may be a grinding wheel, and the driving unit 4 may be a motor.

[0047] See also Figure 2-4 As shown, the housing 2 is connected to the base assembly 1 via a connecting member 5.

[0048] The bottom of the housing 2 is provided with a connection portion 2.3 that is retracted inwards, and a connection hole 2.31 is formed inside the connection portion 2.3.

[0049] The lower part of the connecting member 5 passes through the connecting hole 2.31 and is fixed to the base assembly 1. The connecting member 5 is provided with a limiting portion 5.1 which forms a blocking fit with the upper end surface of the connecting portion 2.3. The upper end of the base assembly 1 forms a blocking fit with the lower end surface of the connecting seat 1.1.

[0050] The housing 2 comprises a hemispherical upper housing 2.5 and a lower housing 2.6, which form a spherical housing 2 after being assembled;

[0051] The connecting part 2.3 is arranged at the bottom of the lower shell 2.6. When assembling, firstly, the connecting member 5 is passed through the connecting hole 2.31 from the upper part of the lower shell 2.6, and the limiting part 5.1 is placed above the connecting part 2.3. The connecting member 5 is preferably a cylindrical structure, and is clearance-matched with the connecting hole 2.31.

[0052] Furthermore, the lower part of the connecting member 5 is fixed to the base assembly 1 by means of screws or the like, and the upper end face of the base assembly 1 and the lower end face of the connecting part 2.3 form a blocking fit. After the above connection is completed, the outer shell 2 can be rotatably connected to the base assembly 1, and the rotation is stable and reliable with little shaking.

[0053] See also Figure 2 and Figure 5 As shown, the bottom of the housing 2 is provided with an annularly distributed tooth groove 2.4, and a positioning assembly is provided above the connecting member 5. The positioning assembly includes an elastic member 6, the inner end of the elastic member 6 is stopped with the connecting member 5, and the outer end of the elastic member 6 is provided with a positioning portion 7, and the elastic member 6 drives the positioning portion 7 to elastically stop in the tooth groove 2.4.

[0054] The annularly distributed tooth grooves 2.4 are arranged coaxially with the rotation axis A. If the housing 2 is rotated, the positioning portion 7 can be retracted under the elastic action of the elastic member 6 and disengage from the tooth grooves 2.4, and the housing 2 can be rotated. The positioning portion 7 can be a steel ball (glass bead).

[0055] After the rotation is completed, the elastic member 6 drives the positioning portion 7 to re-enter the tooth groove 2.4. The positioning portion 7 fits into the tooth groove 2.4, which can limit the rotation of the housing 2, thereby keeping the position of the notch 2.2 stable, which is convenient for users.

[0056] See also Figure 2-4 As shown, a groove 1.11 is provided on the upper part of the base assembly 1, and the connecting member 5 is a hollow structure, and the lower end thereof sinks into the groove 1.11.

[0057] The inner hole of the connecting member 5 is provided with a driving unit frame 4.1, and the driving unit 4 is vertically arranged on the driving unit frame 4.1, and the lower end of the driving unit 4 is synchronously arranged close to the bottom of the groove 1.11 along with the lower end of the driving unit frame 4.1.

[0058] The inner hole of the connecting member 5 is used to accommodate part of the drive unit 4 and the drive unit frame 4.1.

[0059] The lower ends of the drive unit 4 and the drive unit frame 4.1 sink to near the bottom of the groove 1.11, which helps to lower the center of gravity of the device, increase the stability of the structure, and reduce displacement caused by vibration or external force.

[0060] The grinding element 3 is directly fixed to the rotor output shaft of the driving unit 4, so that the rotor shaft of the driving unit 4 is arranged to coincide with the rotation axis A, so that the rotation centers coincide, further increasing the stability of the structure.

[0061] See also Figure 2 As shown, the accommodating space 2.1 is also provided with a circuit board 8 electrically connected to the drive unit 4, and a battery 9, wherein the circuit board 8 is provided with a button 8.1, and the button 8.1 is exposed from the housing 2.

[0062] The battery 9 is arranged on the drive unit frame 4.1, and the drive unit frame 4.1 is fixed to the lower shell 2.6. After the above improvement, the heavier components are arranged close to the base assembly 1, which further lowers the center of gravity of the device and improves the stability.

[0063] The button 8.1 is located directly above the upper shell 2.5 and can be operated by the user to control the start and stop of the drive unit 4;

[0064] The circuit board 8 is connected to the inner side of the upper shell 2.5, and a charging port exposed from the upper shell 2.5 is also provided on the circuit board 8. After the above improvements, the structure is ergonomic, convenient for users to use, and aesthetically pleasing, and the user experience is better.

[0065] See also Figure 2-4 As shown, the base assembly 1 includes a connecting seat 1.1, a rotating seat 1.2, and a suction cup seat 1.3 which are arranged in sequence from top to bottom, a groove 1.11 is arranged above the connecting seat 1.1, a lower part of the connecting seat 1.1 is fixed to the suction cup seat 1.3, a suction cup 10 is arranged at the bottom of the suction cup seat 1.3, and a suction cup frame 10.1 of the suction cup 10 passes through the suction cup seat 1.3 and extends to the inner side of the rotating seat 1.2;

[0066] The rotating axis of the rotating seat 1.2 coincides with the rotating axis A, a crossbar 10.11 is provided on the suction cup frame 10.1, and the rotating seat 1.2 is provided with a sleeve seat 11 sleeved on the outer side of the upper end of the suction cup frame 10.1, and a driving surface 11.1 with a high undulating height is provided on the upper end of the sleeve seat 11, and the driving surface 11.1 is tightly pressed against the crossbar 10.11;

[0067] The rotating seat 1.2 is rotated, and the rotating seat 1.2 drives the sleeve 11 to rotate, and the driving surface 11.1 switches the position point that is close to the cross bar 10.11 to drive the cross bar 10.11 to rise or fall. If the driving surface 11.1 is in a high position, the cross bar 10.11 is driven to rise, and if the driving surface 11.1 is in a low position, the cross bar 10.11 is driven to fall.

[0068] Then the adsorption disk 10 is driven to perform adsorption or desorption.

[0069] The bottom of the connecting member 5 is fixedly connected to the connecting seat 1.1, and the bottom of the connecting seat 1.1 is fixedly connected to the suction cup frame 10.1. The connecting member 5, the connecting seat 1.1 and the suction cup seat 1.3 are in a fixed position relative to the housing 2 and the rotating seat 1.2. A spring 12 is also provided between the bottom of the suction cup seat 1.3 and the upper end surface of the adsorption plate 10;

[0070] The rotating seat 1.2 can control the adsorption disk 10 to be adsorbed or de-adsorbed with the substrate surface, and has the characteristics of convenient operation, stable and reliable connection, and the device has a stable position. The grinding element 3 is in stable contact with the blade, which makes the sharpening effect better.

[0071] See also Figure 1-2 As shown, there are several slots 2.2, which are arranged around the rotation axis A at intervals.

[0072] The notch 2.2 can be switched to a position for inserting a blade by rotating the housing 2 less frequently, thus further facilitating the use of the user.

[0073] The device also has the following characteristics: the device is relatively compact as a whole and has good aesthetics;

[0074] The driving unit 4 is used to drive the grinding element 3 to rotate and grind the blade, which can shorten the grinding operation time and improve the grinding effect.

[0075] If the housing 2 rotates during use, the rotation axis of the housing 2 is coaxially arranged with the rotation axis A of the grinding element 3. At any position of the housing 2, the angle between the notch 2.2 and the peripheral surface of the grinding element 3 is the same. Therefore, the blade still contacts the grinding element 3 at the correct angle, and the risk of inconsistent grinding is greatly reduced.

[0076] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A knife sharpener, characterized in that: include: A base assembly (1), wherein the base assembly (1) can be supported on a surface of a substrate; A housing (2), the housing (2) being rotatably connected to the base assembly (1), and a receiving space (2.1) being provided inside the housing (2); A knife sharpening mechanism, the knife sharpening mechanism is arranged in the accommodating space (2.1), the knife sharpening mechanism comprises a grinding element (3) and a driving unit (4), The driving unit (4) drives the grinding element (3) to rotate along the axis A; The housing (2) is provided with a notch (2.2), wherein the cutting edge of the tool is inserted into the notch (2.2) and contacts the peripheral surface of the grinding element (3); The rotation axis of the housing (2) coincides with the axis A, and the position of the notch (2.2) can be adjusted by rotating the housing (2).

2. A knife sharpener according to claim 1, characterized in that: The housing (2) is connected to the base assembly (1) via a connecting piece (5). The bottom of the housing (2) is provided with a connecting portion (2.3) that is retracted inwards, and a connecting hole (2.31) is formed inside the connecting portion (2.3). The lower part of the connecting member (5) passes through the connecting hole (2.31) and is fixed to the base assembly (1); the connecting member (5) is provided with a limiting portion (5.1) which forms a blocking fit with the upper end surface of the connecting portion (2.3); the upper end of the base assembly (1) forms a blocking fit with the lower end surface of the connecting seat (1.1).

3. A knife sharpener according to claim 2, characterized in that: The bottom of the housing (2) is provided with annularly distributed tooth grooves (2.4), and a positioning assembly is provided above the connecting member (5). The positioning assembly comprises an elastic member (6), the inner end of the elastic member (6) is abutted against the connecting member (5), and the outer end of the elastic member (6) is provided with a positioning portion (7), and the elastic member (6) drives the positioning portion (7) to elastically abut against the tooth groove (2.4).

4. A knife sharpener according to claim 2, characterized in that: The base assembly (1) is provided with a groove (1.11) at the top, the connecting piece (5) is a hollow structure, and the lower end thereof sinks into the groove (1.11). The inner hole of the connecting member (5) is provided with a driving unit frame (4.1), the driving unit (4) is vertically arranged on the driving unit frame (4.1), and the lower end of the driving unit (4) is synchronously arranged close to the bottom of the groove (1.11) along with the lower end of the driving unit frame (4.1).

5. A knife sharpener according to claim 1, characterized in that: The accommodating space (2.1) is also provided with a circuit board (8) electrically connected to the drive unit (4), and a battery (9), wherein the circuit board (8) is provided with a button (8.1), and the button (8.1) is exposed from the housing (2).

6. A knife sharpener according to claim 4, characterized in that: The base assembly (1) comprises a connecting seat (1.1), a rotating seat (1.2), and a suction cup seat (1.3) which are arranged in sequence from top to bottom, the groove (1.11) is arranged above the connecting seat (1.1), the lower part of the connecting seat (1.1) is fixed to the suction cup seat (1.3), a suction cup (10) is arranged at the bottom of the suction cup seat (1.3), and a suction cup frame (10.1) of the suction cup seat (10) passes through the suction cup seat (1.3) and extends to the inner side of the rotating seat (1.2); The rotation axis of the rotating seat (1.2) coincides with the rotating axis A, the suction cup frame (10.1) is provided with a cross bar (10.11), the rotating seat (1.2) is provided with a sleeve seat (11) sleeved on the outer side of the upper end of the suction cup frame (10.1), the upper end of the sleeve seat (11) is provided with a driving surface (11.1) with a high undulating height, and the driving surface (11.1) is tightly pressed against the cross bar (10.11); The rotating seat (1.2) is rotated, and the rotating seat (1.2) drives the sleeve seat (11) to rotate, and the driving surface (11.1) switches the position point that is pressed against the cross bar (10.11), so as to drive the cross bar (10.11) to rise or fall, thereby driving the adsorption plate (10) to adsorb or de-adsorb.

7. A knife sharpener according to claim 1, characterized in that: The number of the slots (2.2) is several and they are arranged around the rotation axis A at intervals.

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