Cantilever spiral fruit cracker

By designing a cantilever spiral nut cracker, the traditional spiral nut cracker's support pillars were eliminated and replaced with a cantilever structure, solving the problems of fragile walnut kernels and lack of small nut tools, thus achieving efficient and safe nut cracking.

CN223929435UActive Publication Date: 2026-02-24李振东
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Patent Information

Application Number
CN202520144432.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Priority Date
2024-01-26
Filing Date
2025-01-10
Publication Date
2026-02-24
Estimated Expiration
2035-01-10

AI Technical Summary

Technical Problem

Existing nutcrackers are prone to breaking the kernels and are unsafe. There is a lack of specialized tools for small nuts, and the methods of use are unsafe and inefficient.

Method used

A cantilevered spiral fruit cracker was designed, which eliminates the two supports of the traditional spiral fruit cracker and replaces it with a single-sided cantilever structure, providing a wide space for easy handling of nuts. The nuts are cracked by a combination of screw and pressure plate.

Benefits of technology

It improves the efficiency and safety of nut cracking, reduces nut damage, and is especially suitable for the elderly and children, providing a safer way to open nuts.

✦ Generated by Eureka AI based on patent content.

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Abstract

A cantilever spiral fruit cracking device is a small tool for cracking nuts such as walnuts and hazelnuts through pressure generated by spiral rotation. The pressure gauge is formed by connecting a turntable, a screw rod and a pressure plate which penetrate through a large nut into a whole through threads in the clockwise direction and the nut, and the turntable is screwed more and more tightly. The main frame is formed by integrally connecting a cantilever platform, a large nut, a cantilever and a chassis; a base tray opposite to the pressure plate is arranged on the chassis; a walnut pit, a hazelnut nest and an apricot pit gap are formed in the chassis tray; small nut piers special for hazelnut apricot pits can be further installed on the base plate. The cantilever spiral fruit cracking device has four types, namely a large type, a medium type, a small type and an industrial type, and can meet the processing requirements of various nuts. The old and children are very safe to use. And the device can also be used for simply extruding and crushing some foods and medicines. The method can also be used for industrial production and processing of nuts.
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Description

[0001] (I) Technical Field: This utility model relates to a small tool for cracking nuts.

[0002] In particular, there is a cantilever spiral fruit cracker that can crack nuts such as walnuts and hazelnuts by rotating and retracting the spiral to obtain the kernels, and it is very convenient to put the kernels in and take out the nuts. (II) Background Technology:

[0004] Currently, the common tool people use to eat walnuts is a nutcracker. However, when using such a nutcracker, the walnut often bursts suddenly when the pressure reaches its limit, causing the kernel to break and even injuring the hand. Furthermore, there are currently no special tools for smaller nuts such as hazelnuts, apricot kernels, plum kernels, and peach kernels. People use their teeth to crack them open; they use wooden sticks and hammers to smash them; they use wooden boards to beat them; and they even squeeze them through door cracks. These methods not only damage the kernels but are also very unsafe.

[0005] To solve this problem, the applicant, Li Zhendong, applied for a utility model patent for a "spiral fruit splitter" on June 9, 2014. The application number is 201420328822.8.

[0006] Its main feature is that this spiral nut splitter has two supports. The disadvantage is that these two supports create a narrow middle section, making it inconvenient to add or remove walnuts. (III) Summary of the Invention

[0008] This utility model, "cantilever spiral fruit cracker," is an improvement upon the "spiral fruit cracker" of the aforementioned patent number 201420328822.8.

[0009] Improvements to the cantilever nut cracker's main frame: The two supports of the "spiral nut cracker" have been eliminated, and a cantilever has been installed on one side of the main frame. This creates a spacious area on the other side of the main frame, making it very convenient to handle walnuts and other nuts.

[0010] This improvement to the cantilever fruit splitter overcomes the drawback of the narrow space between the two supports, making it more convenient to use and greatly improving its performance.

[0011] The beneficial effects of this invention are: using a cantilevered nut cracker to crack nuts, such as walnuts and hazelnuts, is convenient and labor-saving, greatly reducing damage to the kernels. It is especially safe for the elderly and children to use, as it will not hurt their hands.

[0012] The cantilever spiral fruit splitter consists of a turntable (1), a screw (2), a large nut (4) of a cantilever platform (3), a cantilever (5), a pressure plate (6), a base plate (7), a small nut pile groove (8), a tray (9), a walnut pit (10), a hazelnut nest (11), an apricot kernel slit (12), a hazelnut nest (14) of a small nut pile (13), and an apricot kernel slit (15).

[0013] Its characteristic is that the cantilever spiral fruit cracker is composed of a pressure device and a main frame connected as one unit;

[0014] The pressure device is a single component consisting of a screw (2) and a pressure plate (6) connected in a nail-like shape; the screw (2) passes from bottom to top through the large nut (4) on the cantilever platform (3) formed by the horizontal extension of the cantilever (5); the screw (2) is then vertically connected to the turntable (1) through a threaded nut that rotates clockwise, forming a single unit that together constitutes the pressure device.

[0015] The main frame is composed of a chassis (7), a cantilever (5), a cantilever platform (3), and a large nut (4) connected together to form the main frame of the cantilever fruit cracker;

[0016] The pressure unit and the main frame are connected as one unit via the cantilever platform (3) and the large nut (4).

[0017] The entire assembly of the cantilevered spiral fruit splitter;

[0018] The base (7) has a small nut-filled groove (8) with a depth lower than the edge of the groove (8); the small nut-filled groove (8) contains a tray (9), a walnut pit (10), a hazelnut nest (11), and an apricot kernel slit (12). (iv) Description of the attached drawings:

[0020] Appendix Figure 1 Example 1 is a medium-sized cantilever spiral fruit splitter.

[0021] Appendix Figure 2 Example 2: This is an embodiment of a cantilever spiral fruit cracker with a small nut block installed.

[0022] Appendix Figure 3 Example 3 is a small fruit splitter.

[0023] Appendix Figure 4 Example 4: This is an example of a cantilever spiral fruit cracker used in the industrial processing of nuts and walnuts.

[0024] Below, each of the attached figures will be described in detail with reference to the accompanying drawings:

[0025] Figure 1 Example 1 of a medium-sized cantilever spiral fruit splitter

[0026] The following descriptions, in conjunction with the attached diagrams, will explain the components sequentially from top to bottom:

[0027] 1. Turntable: The upper part of the pressure device is a turntable (1).

[0028] The turntable (1) is round with wavy edges, making it easy to grip and rotate without slipping.

[0029] The turntable (1) can also be elliptical. The major axis of the ellipse can generate a large torque, making rotation easier.

[0030] 2. Screw:

[0031] The lower end of the screw (2) is connected to the pressure plate (6) as a nail-shaped integral component. The screw (2) then passes through the large nut (4) on the cantilever platform (3) from bottom to top. The upper end of the screw (2) is then vertically connected to the turntable (1) to form a pressure device.

[0032] The pressure plate (6), pressure screw (2), and pressure plate (6) of the pressure device are connected as one unit by a clockwise thread and nut. The upper and lower ends of the screw (2) rotate in the same direction. In actual use, the pressure plate (1) is tightened more and more as it is turned, and it will not loosen in the opposite direction.

[0033] The screw (2) has a square thread cross-section and a relatively wide pitch to improve its compressive strength.

[0034] The screw (2) has a relatively large inclination of thread, which can increase the distance of the press rotated forward and backward, speed up the forward and backward movement, and make it faster to use.

[0035] The length of the screw (2) is greater than the distance between the lower surface of the cantilever platform (4) and the upper surface of the chassis.

[0036] The distance between the top dead center of the screw (2) and the pressure plate (6) and the base tray is greater than the diameter of the walnut. This is necessary to insert the walnut.

[0037] The distance between the bottom dead center of the screw (2) and the pressure plate (6) and the base tray is less than the diameter of the hazelnut. This is necessary to crack the hazelnut.

[0038] 3. The cantilever platform (3) is the horizontal extension of the cantilever (5).

[0039] 4. The large nut (4) is fixed on the cantilever platform (3) and is integrated with the cantilever platform (3).

[0040] The screw (2) passes through the large nut (4), thus connecting the pressure device and the main frame as one unit.

[0041] Tightness of each nut of the pressure device: The gap between the internal thread of the large nut (4) and the thread of the screw (2) is relatively loose, so that the screw 2 can move up and down smoothly and quickly.

[0042] The internal thread clearance of the nut of the turntable (1) connected to the upper end of the screw 2 must be very small in order to achieve a tight fit between the screw and the turntable and pressure plate and prevent loosening.

[0043] Each nut must have at least two internal threads to ensure that the screw (2) is subjected to balanced force and does not wobble.

[0044] 5. Main frame and cantilever:

[0045] The horizontally extended portion above the cantilever (5) forms a cantilever platform (4).

[0046] The cantilever platform (4) has a large nut (3) that is connected as one piece.

[0047] The cantilever platform (4) and the large nut (3) together with the cantilever (5) and the chassis (7) form a main frame.

[0048] The other side of the main frame creates a spacious area, making it very convenient to take out and put in nuts such as walnuts.

[0049] The outer surface of the upright part of the cantilever can be a plane or a rounded curved surface.

[0050] The connection between the upright part of the cantilever and the base is a rounded arc.

[0051] 6. Pressure unit and pressure plate:

[0052] The pressure plate (6) is an integral part connected to the screw (2) in a nail-like shape. The pressure plate (6) and the screw (2) pass through the large nut (3) on the cantilever platform (4) from bottom to top and are vertically connected to the turntable (1) to form a pressure device.

[0053] The lower surface of the pressure plate (6) has a shallow pit that is concave upwards, and in the center of the shallow pit is a small pointed pit that is concave upwards, corresponding to the tip of the walnut, which is used to prevent the walnut from rolling and slipping.

[0054] The pressure plate (6) corresponds to the inner tray (9) of the chassis (7).

[0055] 7. Chassis: The chassis (7), cantilever (5), large nut (3), and platform (4) are integrated into one unit. Together they form the main frame of the cantilever fruit cracker.

[0056] The pressure unit of the cantilever fruit cracker is composed of a turntable (1), a pressure screw (2), a large nut (3) on the cantilever platform (4), and a pressure plate (6) connected together.

[0057] The pressure device is installed on the main frame and integrated with it to form a complete cantilever fruit cracker.

[0058] 8. Nut mound groove: to be explained later.

[0059] 9. A tray (9) is a tray for placing nuts.

[0060] The tray (9) of the chassis is located in the nut block groove (8) of the chassis (7) and is lower than the plane of the chassis (7).

[0061] The tray (9) has a walnut pit (10) in the middle, which is used to prevent the walnuts from rolling.

[0062] There is an even smaller hazelnut nest in the middle of the shallow pit (11);

[0063] There is a narrow slit in the middle of the hazelnut pit, called the apricot pit slit (12). You can place the apricot pit or plum pit upright in the apricot pit slit so that the screw press plate can crush the apricot pit in the vertical direction. In this way, you can get a whole apricot kernel. If you place the apricot pit flat, the apricot kernel will be crushed.

[0064] 10. The walnut pit in the center of the base tray corresponds to the shallow pit on the pressure plate. It supports the walnuts and prevents them from rolling.

[0065] How to use and the dynamic process of a cantilever spiral nut cracker to crush nuts:

[0066] The user first places the walnuts in the walnut pit (10) of the tray (9), and then turns the turntable (1) and screw (2) by hand. The pressure plate (6) rotates and extends downward, applying pressure to the walnuts placed in the walnut pit to crack the walnuts and remove the kernels.

[0067] The cantilever spiral fruit cracker can also be used for simple crushing and extrusion processing of some food and medicine in the kitchen. (V) Specific Implementation Methods:

[0069] 1. Manufacturing method of cantilever spiral fruit cracker:

[0070] Primarily manufactured using injection molding or compression molding. For special needs, parts may also be made of metal.

[0071] The selection criteria for plastic materials are: high strength, high hardness, high toughness, and non-toxic plastics.

[0072] Metal materials can also be used for the main stress-bearing parts.

[0073] 2. Cantilever Spiral Fruit Cracker Product Specifications: There are four types: large, medium, small, and industrial walnut processing type. Example 1:

[0074] like Figure 1 As shown: Example 1 is a medium-sized cantilever spiral fruit cracker, suitable for ordinary walnuts with a diameter of around 4 cm. Small hard fruit blocks are not required.

[0075] like Figure 2 As shown: Example 2 is a large cantilever spiral fruit cracker, suitable for large walnuts. In Sichuan Province, China, there is a type of walnut with a diameter of up to 4.7 cm. Therefore, a relatively large fruit cracker is needed. The technical requirements for this large fruit cracker are that it can crack both walnuts and small nuts such as hazelnuts.

[0076] To address this, this invention features a specially designed detachable accessory: a small nut-crushing block. This small platform is specifically designed for use when cracking small nuts such as hazelnuts, apricot kernels, and plum pits.

[0077] Special note: Raw almonds contain hydrocyanic acid, which is highly toxic. They must be soaked in water for more than 24 hours and washed thoroughly with fresh water before consumption. This is common sense, so please take note.

[0078] Installation of the small nut block: There is an additional movable small nut block (13) inside the chassis (7) that can be inserted into the slot (8) for removing the small nut block.

[0079] The small nut mound (13) is cylindrical in shape, with a diameter slightly smaller than that of the small nut mound groove (8).

[0080] The cylindrical height of the small nut mound (13) is less than the diameter of a walnut.

[0081] The upper surface of the small nut mound (13) also has hazelnut nests (14) and apricot kernel sutures (15).

[0082] Special note: Raw almonds contain hydrocyanic acid, which is highly toxic. They must be soaked in water for more than 24 hours and washed thoroughly with fresh water before consumption. This is common sense, so please take note.

[0083] The use of the small nut block: When eating hazelnuts, install the small nut block into the slot on the base. This reduces the height of the screw during design and manufacturing. During use, it shortens the screw's stroke to the bottom dead center.

[0084] like Figure 3 The image shows the small-sized fruit splitter of Example 3, suitable for small nuts such as hazelnuts, apricot kernels, and plum kernels. No small hard fruit block is needed. The structure is the same as the medium-sized fruit splitter, but the size is smaller. The semi-circular base plate (16) has a hazelnut pit (17), an apricot kernel slit (18), and a hazelnut groove (19) at the connection between the cantilever and the semi-circular base plate.

[0085] like Figure 4 As shown: This is the horizontal cantilever spiral fruit cracker of Example 4, which is suitable for industrial processing of walnuts.

[0086] Appendix Figure 4 Lay the cantilever spiral fruit cracker horizontally and fix it to the operating table (21) using two screw holes (20). When processing walnuts, place the tail end of the walnut against the walnut tail pit (23) on the upright plate (22) to the left, and place the tip of the walnut against the cantilever's walnut lying pit (23) to the right, corresponding to the walnut tip pit on the lower surface of the pressure plate (6). The force on the walnut is from tip to tail.

[0087] The turntable of the cantilever spiral fruit cracker is designed and manufactured in a clockwise direction. When using the platform to process walnuts, the turntable must be turned counterclockwise with the right hand to tighten it. This is obviously inconvenient. Therefore, the screw (2) and nut (4) of the platform spiral fruit cracker should be redesigned and manufactured to rotate counterclockwise, and the dimensions of other parts should also be adjusted to meet the needs of production operations.

Claims

1. A cantilever spiral fruit splitter, comprising a turntable (1), a screw (2), a large nut (4) of a cantilever platform (3), a cantilever (5), a pressure plate (6), a base plate (7), a small nut pile groove (8), a tray (9), a walnut pit (10), a hazelnut nest (11), an apricot kernel slit (12), a hazelnut nest (14) of a small nut pile (13), and an apricot kernel slit (15); Its characteristics are: The cantilever spiral fruit cracker is composed of a pressure unit and a main frame integrated together. The pressure device is a single component consisting of a screw (2) and a pressure plate (6) connected in a nail shape; the screw (2) passes from bottom to top through a large nut (4) on a cantilever platform (3) formed by the horizontal extension of the cantilever (5); the screw (2) is then vertically connected to the turntable (1) by a threaded nut that rotates clockwise, forming a single unit that together constitutes the pressure device. The main frame is composed of a chassis (7), a cantilever (5), a cantilever platform (3), and a large nut (4) connected together to form the main frame of the cantilever fruit cracker. The pressure device and the main frame are connected as one unit by the cantilever platform (3) and the large nut (4) to form the whole of the cantilever spiral fruit cracker; The chassis (7) contains a small nut-filled groove (8): the depth of the groove is lower than the edge of the small nut-filled groove (8), and the small nut-filled groove (8) contains a tray (9), a walnut pit (10), a hazelnut nest (11), and an apricot kernel slit (12).

2. The cantilevered spiral fruit splitter as described in claim 1, characterized in that: The base (7) has a small nut-shaped slot (8) in which additional movable small nut-shaped pieces (13) can be placed or removed; the small nut-shaped pieces (13) are cylindrical in shape; the diameter of the cylinder of the small nut-shaped pieces (13) is slightly smaller than the diameter of the small nut-shaped slot (8); the height of the cylinder of the small nut-shaped pieces (13) is less than the diameter of a walnut; the upper surface of the small nut-shaped pieces (13) also has hazelnut nests (14) and apricot kernel creases (15).

3. The cantilevered spiral fruit splitter as described in claim 1, characterized in that: The small cantilever spiral fruit splitter has a semi-circular base plate (16) with a hazelnut pit (17) and an apricot kernel slit (18). The connection between the cantilever and the semi-circular base plate is a hazelnut groove (19).

4. The cantilevered spiral fruit splitter as described in claim 1, characterized in that: The cantilever spiral fruit cracker can be laid flat and fixed to the operating table (21) with two screws (20). The left side is the upright plate (22), which has a walnut tail pit (23). The horizontally lying cantilever (5) has a walnut lying pit (24).

Citation Information

Patent Citations

  • Spiral fruit cracking device

    CN204016073U