Foldable knife sharpener

Abstract

The utility model discloses a knife sharpener which is foldable, multifunctional, compact in structure, small in occupied space and convenient to carry, and comprises a handle and a movable frame, and a knife sharpening structure is arranged on the handle and / or the movable frame; the front end of the handle is rotationally connected with the front end of the movable frame, the movable frame can be in a folded state relative to the handle by rotating the movable frame in a folded mode, and the movable frame can be in an unfolded state relative to the handle by rotating the movable frame in an unfolded mode. The handle is provided with limiting grooves corresponding to the folding state and the unfolding state of the movable frame, the movable frame is provided with limiting pieces, the limiting pieces rotate along with the movable frame and can enter and exit from the limiting grooves, and the limiting pieces enter the limiting grooves to limit rotation of the movable frame. The utility model relates to the technical field of knife sharpeners.

Description

Technical Field

[0001] The utility model relates to the technical field of knife sharpeners, more specifically to a foldable knife sharpener. Background Art

[0002] Knife sharpeners are widely used to sharpen the edges of various tools with cutting edges and the parts of tools that need to be restored to their original state. However, knife sharpeners in the prior art often have a single function and cannot be applied to a variety of different tools; they occupy a large space; and they cannot meet the outdoor use needs of users. Utility Model Content

[0003] In view of the shortcomings and defects of the prior art, a knife sharpener is provided which is foldable, has multiple functions, has a compact structure, occupies little space and is easy to carry.

[0004] A foldable knife sharpener, comprising a handle and a movable frame, wherein the handle and / or the movable frame is provided with a knife sharpening structure;

[0005] The front end of the handle is rotatably connected to the front end of the movable frame. The movable frame can be folded relative to the handle when rotated, and can be unfolded relative to the handle when rotated;

[0006] The handle is provided with limiting grooves corresponding to the folding state and the unfolding state of the movable frame. The movable frame is provided with a limiting member. The limiting member rotates with the movable frame and can enter and exit the limiting groove. The limiting member enters the limiting groove to limit the rotation of the movable frame.

[0007] After adopting the above structure, the foldable knife sharpener of the utility model has the following advantages compared with the prior art: the knife sharpening mechanism can be set to have the same function or a knife sharpening structure with different functions, and can be set on the handle or the movable frame, so that the device has multiple functions and is suitable for different usage requirements of users;

[0008] The front end of the handle is rotatably connected to the front end of the movable frame. The movable frame can be rotated relative to the handle. The movable frame can be rotated to a folded state or an unfolded state. When the user needs to perform a knife sharpening operation, the movable frame can be unfolded. When the user needs to store the knife, the movable frame can be folded. After the movable frame is folded, the device has a compact structure and occupies little space, which is conducive to the portability of the device.

[0009] Limiting grooves are arranged on the handle along the rotation direction of the movable frame and respectively correspond to the folded state and the unfolded state of the movable frame. When the movable frame rotates until the limiting piece enters the limiting groove, the continued rotation of the movable frame is restricted after the engagement, so that the movable frame is stably in the folded state or the unfolded state. When the user is sharpening the knife, the stable position of the movable frame makes it convenient for the user to sharpen the knife and improves the sharpening effect.

[0010] As an improvement of the utility model, a rotating shaft is provided at the front end of the handle, a through hole is provided on the movable frame for the rotating shaft to pass through, the limiting grooves are arranged at intervals around the rotating shaft, and the head of the limiting member is inserted into the inner side of the through hole.

[0011] As an improvement of the present invention, the limiting member is a steel ball, the steel ball is inserted into the matching hole of the movable frame, and a spring is arranged between the matching hole and the steel ball.

[0012] As an improvement of the present utility model, the handle is formed by merging a left handle shell and a right handle shell, and an assembly gap of a fan-shaped structure is formed between the inner side of the left handle shell and the inner side of the right handle shell at the front end of the handle, and the rotating shaft is arranged on the inner side of the left handle shell;

[0013] A connecting part with a fan-shaped structure is formed at the front end of the movable frame, the through hole is arranged inside the connecting part, the connecting part is placed in the assembly gap, and the arc surface of the connecting part contacts the arc surface of the assembly gap.

[0014] As an improvement of the utility model, the knife sharpening structure includes a triangular piece arranged at the tail end of the handle, the triangular piece has two opposite sides, the handle is provided with a first knife sharpening rod staggered in position front and back on one side, and the handle is provided with a first knife sharpening blade insert staggered in position front and back on the other side;

[0015] A V-shaped sharpening groove is formed between the first sharpening rod and the triangular piece;

[0016] A V-shaped grinding groove is formed between the first grinding blade insert and the triangular piece;

[0017] The center position of the triangular piece is rotatably connected to the handle via a connecting shaft, and the spacing of the knife sharpening grooves can be changed by rotating the triangular piece.

[0018] As an improvement of the utility model, the handle is further provided with a through groove at the front end of the knife sharpening groove, one of the blades of the scissors is placed in the knife sharpening groove, and the through groove allows the other blade of the scissors to penetrate.

[0019] As an improvement of the utility model, the knife sharpening structure further comprises a plurality of knife sharpening openings arranged on the rotating frame, and the plurality of knife sharpening openings are respectively provided with second knife sharpening blade inserts suitable for knife sharpening.

[0020] As an improvement of the utility model, the knife sharpening structure also includes a fine steel rod, a receiving groove is provided at the tail end of the movable frame, the fine steel rod is rotatably connected in the receiving groove, and the fine steel rod can be rotated to be moved out of the receiving groove.

[0021] As an improvement of the utility model, a slot is provided at the rear end of the fine steel rod, and an elastic buckling portion is provided on the handle. When the fine steel rod is rotated out of the accommodating slot, the buckling portion buckles with the slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the handle of the utility model in a folded state.

[0023] Figure 2 It is a structural schematic diagram of the utility model when the movable frame is in an unfolded state.

[0024] Figure 3 It is a structural schematic diagram of the handle and the movable frame of the utility model in a connected and disconnected state.

[0025] Figure 4 It is a schematic cross-sectional structural diagram of the utility model in an unfolded state.

[0026] Figure 5 The utility model Figure 4 A schematic diagram of the enlarged structure in the middle.

[0027] Figure 6 It is a schematic diagram of the handle structure of the utility model.

[0028] Figure 7 It is a structural schematic diagram of the handle of the utility model in a state where the parts are exploded.

[0029] Figure 8 It is a structural schematic diagram of a triangular piece, a first sharpening rod and a first sharpening blade insert of the utility model.

[0030] Fig. 9 It is a structural schematic diagram of the movable frame of the utility model in a state where parts are exploded.

[0031] Fig.10 It is a structural schematic diagram of the utility model when it is adapted to the operation of sharpening garden scissors.

[0032] Fig.11 It is a structural schematic diagram of the utility model when it is adapted to grind a tool.

[0033] As shown in the figure: 1. Handle; 1.1. Left handle shell; 1.11. Rotating shaft; 1.111. Limiting groove; 1.2. Right handle shell; 1.4. Assembly gap; 2. Movable frame; 2.1. Limiting piece; 2.11. Spring; 2.2. Connecting part; 2.21. Through hole; 2.3. Accommodating groove; 3. Knife sharpening structure; 3.1. Triangular piece; 3.11. First knife sharpening rod; 3.12. First knife sharpening blade insert; 3.2. Knife sharpening edge; 4. Second knife sharpening blade insert; 5. Stainless steel rod; 5.1. Slot; 6. Buckling part; 7. Avoidance hole. DETAILED DESCRIPTION

[0034] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] See also Figure 1-11 As shown, a foldable knife sharpener comprises a handle 1 and a movable frame 2, wherein a knife sharpening structure 3 is provided on the handle 1 and / or the movable frame 2;

[0036] The front end of the handle 1 is rotatably connected to the front end of the movable frame 2. The movable frame 2 can be folded relative to the handle 1 by rotating it in a folded state, and can be unfolded relative to the handle 1 by rotating it in an unfolded state.

[0037] The handle 1 is provided with limiting grooves 1.111 corresponding to the folding state and the unfolding state of the movable frame 2. A limiting member 2.1 is provided on the movable frame 2. The limiting member 2.1 rotates with the movable frame 2 and can enter and exit the limiting groove 1.111. The limiting member 2.1 enters the limiting groove 1.111 to limit the rotation of the movable frame 2.

[0038] After adopting the above structure, the foldable knife sharpener of the utility model has the following advantages compared with the prior art: the knife sharpening mechanism can be set as a knife sharpening structure 3 with the same function or different functions, and can be set on the handle 1 or the movable frame 2, so that the device has multiple functions and is suitable for different usage requirements of users;

[0039] The front end of the handle 1 is rotatably connected to the front end of the movable frame 2. The movable frame 2 can be rotated relative to the handle 1. The movable frame 2 can be rotated to a folded state or an unfolded state. When the user needs to perform a knife sharpening operation, the movable frame 2 can be unfolded. When the user needs to store the knife, the movable frame 2 can be folded. After the movable frame 2 is folded, the device has a compact structure and occupies little space, which is conducive to the portability of the device.

[0040] Limiting grooves 1.111 are arranged on the handle 1 along the rotation direction of the movable frame 2 and respectively correspond to the folded state and the unfolded state of the movable frame 2. When the movable frame 2 rotates until the limiting member 2.1 enters the limiting groove 1.111, the continued rotation of the movable frame 2 is restricted after the engagement, so that the movable frame 2 is stably in the folded state or the unfolded state. When the user is sharpening the knife, the stable position of the movable frame 2 makes it convenient for the user to sharpen the knife and improves the sharpening effect.

[0041] When the movable frame 2 is in the folded state, the movable frame 2 and the handle 1 are in a two-layer overlapping structure layout parallel to each other;

[0042] When the movable frame 2 is in the unfolded state, the movable frame 2 and the handle 1 are in a "7"-shaped structural layout;

[0043] The above structural layout has an ergonomic structural design to enhance the user experience;

[0044] As an improvement of the present invention, the front end of the handle 1 is provided with a rotating shaft 1.11, the movable frame 2 is provided with a through hole 2.21 for the rotating shaft 1.11 to pass through, the limiting grooves 1.111 are arranged at intervals around the rotating shaft 1.11, and the head of the limiting member 2.1 penetrates into the inner side of the through hole 2.21. After the above improvement, the movable frame 2 is combined with the rotating shaft 1.11 on the handle 1 through the through hole 2.21 to realize rotation, which has the characteristics of simple structure, stable and reliable operation;

[0045] The limiting groove 1.111 is arranged on the peripheral side of the rotating shaft 1.11, and the limiting member 2.1 is arranged on the movable frame 2 and the head thereof extends into the inner side of the through hole 2.21, so that the structural layout is reasonable and compact, which is conducive to the miniaturization of the device.

[0046] As an improvement of the present invention, the limiting member 2.1 is a steel ball, which is inserted into the matching hole of the movable frame 2, and a spring 2.11 is arranged between the matching hole and the steel ball. After the above improvement, when the movable frame 2 rotates until the steel ball enters the limiting groove 1.111, the spring 2.11 expands and drives the steel ball to press against the limiting groove 1.111, so that the steel ball and the limiting groove 1.111 are matched stably, thereby improving the effect of limiting the rotation of the movable frame 2, and the position of the movable frame 2 is stable.

[0047] As an improvement of the present utility model, the handle 1 is formed by merging a left handle 1 shell and a right handle 1 shell, and a fan-shaped assembly gap 1.4 is formed between the inner side of the left handle 1 shell and the inner side of the right handle 1 shell at the front end of the handle 1, and the rotating shaft 1.11 is arranged on the inner side of the left handle 1 shell;

[0048] The front end of the movable frame 2 is formed with a connecting portion 2.2 of a fan-shaped structure, the through hole 2.21 is arranged inside the connecting portion 2.2, the connecting portion 2.2 is inserted into the assembly gap 1.4, and the arc surface of the connecting portion 2.2 contacts the arc surface of the assembly gap 1.4. After the above improvement, the arc surface of the connecting portion 2.2 of the fan-shaped structure is arranged to extend along the rotation direction of the movable frame 2. When the movable frame 2 rotates, the arc surface of the connecting portion 2.2 contacts the arc surface of the assembly gap 1.4, so that the rotation of the movable frame 2 is more stable, and the user's experience is improved.

[0049] As an improvement of the present invention, the knife sharpening structure 3 comprises a triangular piece 3.1 arranged at the rear end of the handle 1, the triangular piece 3.1 having two opposite sides, one side of the handle 1 corresponding to which is provided with a first knife sharpening rod 3.11 staggered in position front and back, and the other side of the handle 1 corresponding to which is provided with a first knife sharpening blade insert 3.12 staggered in position front and back;

[0050] A V-shaped sharpening groove is formed between the first sharpening rod 3.11 and the triangular plate 3.1;

[0051] A V-shaped grinding groove is formed between the first grinding blade insert 3.12 and the triangular piece 3.1;

[0052] The center position of the triangular piece 3.1 is rotatably connected to the handle 1 via a connecting shaft, and the spacing of the sharpening grooves can be changed by rotating the triangular piece 3.1.

[0053] The knife sharpening structure 3 of the triangular piece 3.1 mentioned above can be used to sharpen the knife. When the user needs to sharpen the knife, the user can place the knife into the required sharpening groove. The rotating triangular piece 3.1 drives the triangular piece 3.1 to rotate when the user presses down the knife to change the groove spacing, thereby making the knife sharpening structure 3 fit the side of the blade more closely. It can be suitable for the grinding needs of blades of various thicknesses, thereby improving the applicability of the device.

[0054] See also Fig.10 The handle 1 is also provided with a through slot at the front end of the sharpening slot, the blade of the scissors is placed in the sharpening slot, and the through slot allows the head of the scissors to penetrate. Fig.10 In the figure, the scissors shown are garden scissors, and the position of the triangular piece 3.1 sharpening structure 3 is also different from the aforementioned triangular piece 3.1 sharpening structure 3, and the position is adjusted for the scissors sharpening operation;

[0055] When the user needs to sharpen the scissors, the user places the blade of the scissors into the required sharpening groove, and the side of the scissors blade contacts the sharpening structure 3. By pulling the handle 1, the sharpening structure 3 can sharpen the side of the blade;

[0056] The through slot allows the head of the scissors to enter, and when the scissors are turned or pulled, the blade of the scissors is always in the sharpening slot, and the blade of the scissors and the sharpening structure 3 maintain effective cooperation, and the sharpening effect is better. The handle 1 can also be equipped with a protective cover for the structure adjusted therein. When the scissors do not need to be sharpened, the protective cover is connected to the handle 1 to cover the triangular piece 3.1 sharpening structure 3 and the through slot, so that the user can hold it better.

[0057] Of course, this device can not only grind Fig.10 The garden scissors shown in the figure can also meet the grinding requirements of conventional scissors (such as tailor scissors). When grinding conventional scissors (such as tailor scissors), the scissors are first spread out in an "eight" shape, and then one of the blades is placed in the grinding groove. By pulling the handle 1 or pulling the scissors, the conventional scissors can also be ground.

[0058] As an improvement of the utility model, the movable frame 2 is provided with an avoidance hole, and an avoidance hole can also be provided at a position opposite to the avoidance hole on the handle 1. When the movable frame 2 is folded, the two avoidance holes are merged. The ergonomic structural design facilitates user use and improves user experience.

[0059] As an improvement of the utility model, the knife sharpening structure 3 also includes a plurality of knife sharpening openings 3.2 arranged on the movable frame 2, and the plurality of knife sharpening openings 3.2 are respectively provided with second knife sharpening inserts 4 suitable for knife sharpening. In this embodiment, two knife sharpening openings 3.2 are used, and the knife sharpening opening 3.2 located at the front end of the movable frame 2 can be provided with a second knife sharpening insert 4 made of tungsten steel; the knife sharpening opening 3.2 located at the rear end of the movable frame 2 can be provided with a second knife sharpening insert 4 made of ceramic. After the above improvement, the sharpening requirements of different knives can be met, the device has multiple functions, and the scope of application is expanded.

[0060] As an improvement of the present invention, the knife sharpening structure 3 further includes a steel bar 5, and a receiving groove 2.3 is provided at the rear end of the movable frame 2. The steel bar 5 is rotatably connected to the receiving groove 2.3, and the steel bar 5 can be rotated to be removed from the receiving groove 2.3. After the above improvement, the steel bar 5 adopts a structure that can be used by users to sharpen fish hooks; when the user needs to use the steel bar 5, he can rotate it out of the receiving groove 2.3 to sharpen or grind the knife, further increasing the functionality of the device and expanding the scope of use.

[0061] As an improvement of the present invention, the tail end of the fine steel rod 5 is provided with a slot 5.1, and the handle 1 is provided with an elastic buckling portion 6. When the fine steel rod 5 is rotated out of the accommodating groove 2.3, the buckling portion 6 is buckled with the slot 5.1.

[0062] In addition, when the movable frame 2 is in the folded state, the plurality of knife sharpening edges 3.2 and the fine steel rod 5 are located opposite to the handle 1, and the structure can partially block them, thereby reducing leakage and contact with external objects, extending the service life, and improving the user experience.

[0063] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A foldable knife sharpener, characterized in that: It comprises a handle (1) and a movable frame (2), wherein the handle (1) and / or the movable frame (2) is provided with a knife sharpening structure (3); The front end of the handle (1) is rotatably connected to the front end of the movable frame (2); the movable frame (2) can be folded relative to the handle (1) by rotating it; and the movable frame (2) can be unfolded relative to the handle (1) by rotating it; The handle (1) is provided with limiting grooves (1.111) corresponding to the folded state and the unfolded state of the movable frame (2), respectively; a limiting member (2.1) is provided on the movable frame (2); the limiting member (2.1) rotates along with the movable frame (2) and can enter and exit the limiting groove (1.111); the limiting member (2.1) enters the limiting groove (1.111) to limit the rotation of the movable frame (2).

2. A foldable knife sharpener according to claim 1, characterized in that: The front end of the handle (1) is provided with a rotating shaft (1.11), the movable frame (2) is provided with a through hole (2.21) for the rotating shaft (1.11) to pass through, the limiting grooves (1.111) are arranged at intervals around the rotating shaft (1.11), and the head of the limiting member (2.1) penetrates into the inner side of the through hole (2.21).

3. A foldable knife sharpener according to claim 2, characterized in that: The limiting member (2.1) is a steel ball, which is inserted into a matching hole of the movable frame (2), and a spring (2.11) is arranged between the matching hole and the steel ball.

4. A foldable knife sharpener according to claim 2, characterized in that: The handle (1) is formed by merging a left handle (1) shell and a right handle (1) shell, and an assembly gap (1.4) of a fan-shaped structure is formed between the inner side of the left handle (1) shell and the inner side of the right handle (1) shell at the front end of the handle (1), and the rotating shaft (1.11) is arranged on the inner side of the left handle (1) shell; A connecting portion (2.2) with a fan-shaped structure is formed at the front end of the movable frame (2); the through hole (2.21) is arranged inside the connecting portion (2.2); the connecting portion (2.2) is inserted into the assembly gap (1.4); and the arc surface of the connecting portion (2.2) contacts the arc surface of the assembly gap (1.4).

5. The foldable knife sharpener according to claim 1, characterized in that: The knife sharpening structure (3) comprises a triangular piece (3.1) arranged at the rear end of the handle (1), the triangular piece (3.1) having two opposite sides, one side of the handle (1) corresponding to which is provided with a first knife sharpening rod (3.11) staggered in position front to back, and the other side of the handle (1) corresponding to which is provided with a first knife sharpening insert (3.12) staggered in position front to back; A V-shaped sharpening groove is formed between the first sharpening rod (3.11) and the triangular plate (3.1); A V-shaped grinding groove is formed between the first grinding blade insert (3.12) and the triangular piece (3.1); The center position of the triangular piece (3.1) is rotatably connected to the handle (1) via a connecting shaft, and the spacing of the knife sharpening grooves can be changed by rotating the triangular piece (3.1).

6. A foldable knife sharpener according to claim 5, characterized in that: The handle (1) is also provided with a through groove at the front end of the sharpening groove, one of the blades of the scissors is placed in the sharpening groove, and the through groove allows the other blade of the scissors to penetrate.

7. The foldable knife sharpener according to claim 1, characterized in that: The knife sharpening structure (3) further comprises a plurality of knife sharpening openings (3.2) arranged on the rotating frame, wherein the plurality of knife sharpening openings (3.2) are respectively provided with second knife sharpening inserts (4) suitable for knife sharpening.

8. The foldable knife sharpener according to claim 1, characterized in that: The knife sharpening structure (3) also includes a fine steel rod (5), and a receiving groove (2.3) is provided at the rear end of the movable frame (2). The fine steel rod (5) is rotatably connected to the receiving groove (2.3), and the fine steel rod (5) can be rotated to be removed from the receiving groove (2.3).

9. A foldable knife sharpener according to claim 8, characterized in that: The tail end of the fine steel rod (5) is provided with a slot (5.1), and the handle (1) is provided with an elastic buckling portion (6). When the fine steel rod (5) is rotated out of the accommodating groove (2.3), the buckling portion (6) is buckled with the slot (5.1).

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