A fork assembly mounted on a positioning seat of a fork shaft in a cooking machine

Abstract

The utility model discloses a kind of prong assembly installed in the positioning seat of prong shaft in cooking machine, prong assembly includes base and the several stirring leaves of installing on base, the positioning seat is installed in frying pan bottom, prong shaft is placed in the axial passage of positioning seat, its upper end passes through axial passage and is exposed to outside upwards, it is equipped with the elastic clamp piece that is extended upwards and is "U" shape on the upper end surface of prong shaft, it is equipped with the ring-shaped clamping strip that is outwardly convex and is annular on the outside of the two vertical board upper portion of this elastic clamp piece, the bottom surface center of the base is equipped with the blind slot that is extended upwards and is stepped, it is equipped with the annular groove that the cavity of top step in blind slot is placed in the ring-shaped clamping strip when the base is buckled on the upper end of prong shaft, the prong shaft is fixedly connected with base, using above-mentioned structure, when base is installed on prong shaft, it can be in place in one step, convenient and efficient.

Description

Technical Field

[0001] This utility model relates to a fork assembly for an intelligent cooking machine, and more particularly to a fork assembly installed on a positioning seat of the fork shaft in the cooking machine. Background Technology

[0002] Stir-fry machines typically have a fork assembly installed in the wok to stir the food inside. The rotation of the fork assembly is controlled by a drive motor. In existing technology, the fork assembly mainly consists of a base, stirring blades mounted on the base, and a nut. The fork assembly is installed in the wok as follows: the base passes through the output shaft of the drive motor, which extends into the wok, and overlaps the step of the output shaft. An external thread is provided at the upper end of the output shaft, and a wing nut is tightened at this upper end, thereby pressing the base firmly and fixing it to the output shaft. The above structure and installation method have the following shortcomings:

[0003] 1) Threaded connections are not very reliable, and there is a risk that the wing nut may loosen and fall into the pot. Specifically: During cooking, the food will exert a reaction force on the stirring blade, causing the wing nut to loosen. In addition, if the wing nut is not tightened properly when manually screwing it on, the probability of it loosening will be further increased.

[0004] 2) Threaded holes and wing nuts are prone to accumulating dirt and grime, making them difficult to clean and potentially posing food safety risks. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a fork assembly that is easy to assemble and disassemble, highly reliable, and easy to clean, and is installed on the positioning seat of the fork shaft in a cooking machine.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A fork assembly is provided, which is installed on a positioning seat of a fork shaft in a wok. The fork assembly includes a base and several stirring blades mounted on the base. The positioning seat is installed at the bottom of the wok. The fork shaft is placed in the axial channel of the positioning seat, with its upper end extending upward through the axial channel and exposed to the outside. The fork assembly is characterized by having an upwardly extending, U-shaped elastic retainer on the upper end face of the fork shaft. An outwardly protruding, annular retaining strips are provided on the outer sides of the upper part of the two vertical plates of the elastic retainer. An upwardly extending, stepped blind groove is provided at the center of the bottom surface of the base. An annular groove is provided on the inner wall of the cavity of the top step in the blind groove, which engages the retaining strips when the base is fastened to the upper end of the fork shaft. The fork shaft is fixedly connected to the base.

[0008] Preferably, the shift fork shaft and the base are fixedly connected by a male-female interlocking structure or a pin insertion structure.

[0009] Preferably, the male-female interlocking structure is an irregular connection structure, which consists of a column set on the upper end of the shift fork shaft and a channel in the cavity of the middle step in the blind groove that can be adapted to interlock with the column. The outer contour shape of the column is waist-shaped or "D"-shaped.

[0010] Preferably, the male-female interlocking structure is a regular polygonal connection structure, which consists of a column disposed at the upper end of the shift fork shaft and a channel disposed in the cavity of the middle step in the blind groove that can be adapted to and interlock with the column. The cross-sectional shape of the column is an equilateral triangle, a regular quadrilateral, or a regular pentagon.

[0011] Preferably, the outer surface of the base is divided into a top surface, an upper surface, and a lower surface that are integrated together. The top surface, upper surface, and lower surface are all closed surfaces formed by continuous and smooth curves, and the bottom end of the stirring blade is mounted on the lower surface.

[0012] Preferably, a protruding post extends upward from the top of the positioning seat, and the cavity of the bottom step of the blind groove covers the protruding post.

[0013] This utility model provides a blind groove on the base and an elastic clip on the shift fork shaft, allowing the base to be quickly and elastically engaged with the shift fork shaft. By setting a male-female interlocking structure or a pin insertion structure to limit the base in the circumferential direction, a fixed connection between the base and the shift fork shaft is achieved. It has the advantages of simple structure and convenient assembly and disassembly. Attached Figure Description

[0014] Figure 1 This is a 3D view of the fork assembly installed in the wok.

[0015] Figure 2 yes Figure 1 Disassembly view.

[0016] Figure 3 yes Figure 1 A sectional view.

[0017] In the figure: 1. Wok; 11. Wok shaft seat; 2. Base; 21. Blind groove; 22. Mounting column; 3. Stirring blade; 4. Shift fork shaft; 41. Elastic clip; 42. Column; 5. Positioning seat; 51. Protrusion; 52. Positioning column; 6. Bearing; 7. Bushing. Detailed Implementation

[0018] like Figure 1 , Figure 2 and Figure 3As shown, the intelligent cooking machine of this utility model includes a wok 1 and a fork assembly detachably installed inside the wok 1. A pot motor and a fork motor (not shown) are installed below the wok 1. The pot motor drives the wok 1 to rotate around its axis, and the fork motor drives the fork assembly to rotate relative to the wok 1 around its axis. The upper end of the fork shaft 4 of the fork motor passes upward through the bottom of the wok 1 and is placed inside the wok.

[0019] The fork assembly includes a base 2 and several stirring blades 3 mounted on the base 2. This invention allows for quick installation of the base 2 and the fork shaft 4 by snap-fit ​​connection. This connection method allows for one-step assembly and disassembly, which is very convenient. Furthermore, a male-female interlocking structure or a pin-plugging structure is provided to fix the base 2 and the fork shaft 4, ensuring that there is no relative displacement between the base 2 and the fork shaft 4 in the circumferential direction. This allows the fork shaft 4 to apply a torque to the base 2 to rotate synchronously forward or backward, while preventing the base 2 from loosening or even detaching from the fork shaft 4. This design ensures safe and reliable use.

[0020] 1. Shift fork shaft 4

[0021] The wok 1 of this utility model is detachably installed with the wok shaft seat 11 located at the bottom of the wok 1. Its upper end passes through the cylindrical channel in the wok shaft seat 11 and the central hole at the bottom of the wok 1 and is placed in the wok, with gaps left between them. The wok 1, the wok shaft seat 11 and the fork shaft 4 are coaxially arranged. To seal the gap between the shift fork shaft 4 and the center hole, a positioning seat 5 coaxial with it is provided on the shift fork shaft 4. The positioning seat 5 can also play a positioning role when the shift fork shaft 4 rotates. The positioning seat 5 is threadedly connected to the pot shaft seat 11 and presses against the inner bottom surface of the wok 1. A protruding post 51 extending upward is provided on the top of the positioning seat 5. The protruding post 51 is preferably hexagonal, which facilitates the disassembly and assembly of the positioning seat 5. An axial channel is provided on the positioning seat 5 and the protruding post 51 to allow the shift fork shaft 4 to pass through. The shift fork shaft 4 and the axial channel are connected by two bearings 6 arranged vertically. The two bearings 6 are spaced apart by a bushing 7 to further ensure that the shift fork shaft 4 is not eccentric when rotating. The two bearings 6 are placed on the protruding post 51 at the upper end of the shift fork shaft 4 (the installation method between the positioning seat 5, the wok 1 and the pot shaft seat 11 is described in "3" below).

[0022] The upper end face of the shift fork shaft 4 is provided with an upwardly extending elastic retainer 41 with a cross-sectional shape of "U". It is coaxial with the shift fork shaft 4 and the bottom diameter of the elastic retainer 41 is smaller than the diameter of the upper end face. The elastic retainer 41 is composed of two vertical plates. On the outer side wall of the upper part of each vertical plate (outer: away from the axis of the wok 1, inner: towards the axis of the wok 1), there is a retaining strip integrally formed with the vertical plate and protruding outward in an annular shape. The retaining strip is used to engage with the annular groove in the base 2.

[0023] To ensure that there is a gap between the bottom surface of the base 2 and the positioning seat 5 after the base 2 is engaged with the locking strip, so that the base 2 and the positioning seat 5 do not interfere with each other when they rotate relative to each other, the upper end of the shift fork shaft 4 is a stepped shaft. The step is slightly higher than the top surface of the protrusion 51 (the part of the upper end of the shift fork shaft 4 located above the step is called the top shaft), and the bottom surface of the base 2 overlaps on the step.

[0024] The male-female interlocking structure can be an irregular connection structure or a regular polygonal connection structure, consisting of a male and a female component, respectively disposed within the top shaft and the base 2. The pin insertion structure includes a first pin hole on the base 2, a second pin hole on the top shaft, and a pin. After the base 2 is fastened onto the shift fork shaft 4, inserting the pin into the first and second pin holes will fix the base 2 and the shift fork shaft 4 together.

[0025] 2. Base 2

[0026] The outer contour of the base 2 is hat-shaped, and its outer side is a closed surface. A blind groove 21 extending upward and step-shaped is provided in the center of its bottom surface. Each step in the blind groove 21 is cylindrical, and the diameter of all steps increases sequentially from top to bottom, namely the top step, the middle step, and the bottom step.

[0027] 1) Top steps

[0028] The top step is used to engage with the locking strip. A closed annular groove is provided in the circumferential direction of the inner wall of the cavity of the top step. When the base 2 is fastened on the upper end of the shift fork shaft 4, the locking strip is adapted to be elastically locked in the annular groove.

[0029] 2) Middle steps

[0030] The female component is provided in the inner cavity of the middle step and can be engaged with the male component on the top shaft.

[0031] The specific structures of the irregular connection structure and the regular polygon connection structure are as follows:

[0032] a. Irregular connection structure

[0033] like Figure 2 As shown, the preferred male component is a column 42 disposed on the outer wall of the top shaft. The outer contour of the column 42 is an irregular shape that is neither circular nor rectangular, such as a waist shape (a closed structure with parallel upper and lower sides and arc-shaped left and right sides), or a "D" shape. Alternatively, the top shaft can be used as the male component and its shape can be set as the aforementioned irregular shape. The female component is a channel disposed on the peripheral wall of the inner cavity of the middle step and extending inward. The inner wall shape of the channel is adapted to the shape of the column 42, so that the two can be fitted and engaged.

[0034] b. Regular polygonal connection structure

[0035] The preferred male component is a column 42 disposed on the outer wall of the top shaft. The cross-sectional shape of the column 42 can be an equilateral triangle, a regular quadrilateral, or a regular pentagon. Alternatively, the top shaft can be used as the male component and its shape can be set to be the same as that of the column 42. The female component is a channel disposed on the peripheral wall of the inner cavity of the middle step and extending inward. The inner wall shape of the channel is adapted to the shape of the column 42.

[0036] 3) Bottom steps

[0037] When the base 2 is mounted on the shift fork shaft 4, the top surface of the cavity of the bottom step is in contact with the step on the shift fork shaft 4. A gap is left between the bottom surface of the base 2 and the positioning seat 5. The cavity accommodates the protrusion 51, thereby covering the gap between the shift fork shaft 4 and the protrusion 51. The protrusion 51 creates a height difference between the bottom of the base 2 and the entrance end of the gap between the axial channel of the shift fork shaft 4 and the positioning seat 5, thereby effectively preventing juice or food residue in the pot from seeping into the entrance end through the gap between the bottom of the base 2 and the positioning seat 5.

[0038] 4) Outer side of base 2

[0039] The outer surface of the base 2 is divided into a top surface, an upper surface, and a lower surface that are integrally formed. These three surfaces are closed surfaces composed of continuous and smooth curves, giving the outer surface of the base 2 a smooth and rounded appearance. This effectively prevents the accumulation of food or vegetable juice on the surface, avoids dirt buildup, facilitates cleaning, and enhances the aesthetic appeal. The top surface is preferably circular or hemispherical. The vertical projection shape of the upper surface is preferably circular or annular. The lower surface is preferably cylindrical. Several mounting posts 22 are spaced apart along the circumference of the lower surface. The bottom end of the stirring blade 3 is mounted on the corresponding mounting post 22, and the top end of the stirring blade 3 extends upwards.

[0040] 3. Installation method between positioning seat 5, wok 1 and wok shaft seat 11

[0041] The pot shaft seat 11 is composed of an integrally formed cylindrical tube and an annular platform connected to the outer wall of the upper end of the cylindrical tube. The top of the cylindrical tube is higher than the annular platform. A cylindrical channel is provided inside the cylindrical tube. The central hole on the wok 1 passes through the upper end of the cylindrical tube and overlaps the top surface of the annular platform. The cylindrical tube has a positioning function for the installation of the wok 1. The bottom of the wok 1 is provided with an installation hole, which is fixed to the annular platform by bolts.

[0042] The output end of the pot motor is fixedly connected to the cylindrical channel to drive the pot shaft seat 11 to rotate the wok 1.

[0043] The positioning seat 5 is cap-shaped, with an open bottom and a cavity. A downwardly extending positioning post 52 is provided at the center of the top surface of the cavity. External threads are provided on the outer wall of the positioning post 52. Correspondingly, threads are provided on the inner wall of the upper end of the cylindrical channel. The positioning post 52 is inserted into the cylindrical channel and threadedly connected, thereby fixing the positioning seat 5 inside the wok 1. A sealing ring is provided between the bottom edge of the positioning seat 5 and the bottom surface of the wok to prevent vegetable juice or smoke from seeping into the cylindrical channel.

Claims

1. A fork assembly mounted on a positioning seat of a fork shaft in a wok, the fork assembly comprising a base and a plurality of stirring blades mounted on the base, the positioning seat being mounted on the bottom of a wok, the fork shaft being placed within an axial channel of the positioning seat, its upper end extending upward through the axial channel and exposed to the outside, characterized in that, An upwardly extending, U-shaped elastic retainer is provided on the upper end face of the shift fork shaft. An outwardly protruding, annular retaining strip is provided on the outer side of the upper part of the two vertical plates of the elastic retainer. An upwardly extending, stepped blind groove is provided at the center of the bottom surface of the base. An annular groove is provided on the inner wall of the cavity of the top step in the blind groove, which holds the retaining strip in place when the base is fastened to the upper end of the shift fork shaft. The shift fork shaft is fixedly connected to the base.

2. The shift fork assembly installed on the positioning seat of the shift fork shaft in a stir-fry machine according to claim 1, characterized in that, The shift fork shaft and the base are fixedly connected by a male-female interlocking structure or a pin insertion structure.

3. The shift fork assembly installed on the positioning seat of the shift fork shaft in a stir-fry machine according to claim 2, characterized in that, The male-female interlocking structure is an irregular connection structure, which consists of a column set on the upper end of the shift fork shaft and a channel in the cavity of the middle step in the blind groove that can be adapted to and interlock with the column. The outer contour of the column is waist-shaped or "D"-shaped.

4. The shift fork assembly installed on the positioning seat of the shift fork shaft in a stir-fry machine according to claim 2, characterized in that, The male-female interlocking structure is a regular polygonal connection structure. The regular polygonal connection structure consists of a column set at the upper end of the shift fork shaft and a channel in the cavity of the middle step set in the blind groove that can be adapted to and interlock with the column. The cross-sectional shape of the column is an equilateral triangle, a regular quadrilateral, or a regular pentagon.

5. The fork assembly installed on the positioning seat of the fork shaft in a stir-fry machine according to claim 3 or 4, characterized in that, The outer surface of the base is divided into a top surface, an upper surface, and a lower surface that are connected as one unit. The top surface, upper surface, and lower surface are all closed surfaces formed by continuous and smooth curves. The bottom end of the stirring blade is installed on the lower surface.

6. The shift fork assembly installed on the positioning seat of the shift fork shaft in a stir-fry machine according to claim 5, characterized in that, A protruding post extends upward from the top of the positioning seat, and the cavity of the bottom step of the blind groove covers the protruding post.

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