Speed regulating device and food material arranging machine

Abstract

The utility model provides a speed adjusting device and a food material arranging machine. A speed adjusting knob of the speed adjusting device is arranged on a shell of the food material arranging machine. One end of the transmission shaft can be connected with the first ends of the speed regulation knobs arranged at different angles, so that the transmission shaft can rotate when the speed regulation knobs rotate; and the speed regulation potentiometer is electrically connected with a circuit board of the food material arranging machine and is also connected with the other end of the transmission shaft, so that when the transmission shaft rotates, a sliding arm of the speed regulation potentiometer moves to change the effective length of a resistance wire of the speed regulation potentiometer, adjust the resistance value of the resistance wire and further adjust the rotating speed of a motor of the food material arranging machine. A mechanical structure is used for power transmission so that the speed regulation knobs arranged at different angles can be connected with the transmission shaft, the transmission shaft is driven to rotate when the speed regulation knobs rotate, and then the speed regulation potentiometer is driven to act correspondingly. The cost of the special angle speed regulation potentiometer is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of food preparation technology, and in particular to a speed control device and a food processing machine. Background Technology

[0002] Currently, the speed control knobs on food processing machines on the market may have different installation angles. Different angles require corresponding potentiometers, which need to be custom-designed to accommodate the varying installation angles. Potentiometers with different angles are prone to damage during assembly, leading to impaired speed control, difficult repairs, poor process stability, high product defect rates, and increased cost due to the custom-designed potentiometers.

[0003] Chinese utility model patent CN216221148U discloses a speed controller for a food mixer and the food mixer itself. The potentiometer on the control panel passes through the center hole of the knob cover and is connected to the switch knob. Microswitches on the control panel correspond one-to-one with each automatic function button. The food mixer uses the speed controller described above. The mixer speed can be manually controlled, but the potentiometer cannot be adapted to speed control knobs installed at different angles. Utility Model Content

[0004] The purpose of this application is to provide a speed regulating device and a food processing machine.

[0005] The embodiments of this application adopt the following technical solution: a speed regulating device applied to a food processing machine, the speed regulating device comprising:

[0006] The speed control knob is located on the outer casing of the food processing machine;

[0007] A drive shaft is installed inside the food processing machine. One end of the drive shaft can be connected to the first end of the speed adjustment knob set at different angles, so that the drive shaft can rotate when the speed adjustment knob is rotated.

[0008] A speed-regulating potentiometer is electrically connected to the circuit board of the food processing machine. The speed-regulating potentiometer is also connected to the other end of the drive shaft so that when the drive shaft rotates, the sliding arm of the speed-regulating potentiometer moves to change the effective length of the resistance wire of the speed-regulating potentiometer, adjust the resistance value of the resistance wire, and thus adjust the speed of the motor of the food processing machine.

[0009] A mechanical structure is used for power transmission so that speed control knobs positioned at different angles can be connected to a drive shaft. Rotation of the speed control knob drives the drive shaft, which in turn actuates the speed control potentiometer. This enables speed adjustment of the potentiometer regardless of the speed control knob's angle position. It reduces the cost of potentiometers with special angles, improves assembly stability, standardizes parts, increases assembly efficiency, and ensures product quality.

[0010] In some embodiments, the first end of the speed control knob is provided with a first tooth, the first tooth including a plurality of first teeth, the plurality of first teeth being arranged around the first end of the speed control knob;

[0011] The drive shaft is provided with a second tooth that mates with the first tooth. The second tooth includes a plurality of second teeth, which are arranged around the end of the drive shaft that is connected to the speed control knob.

[0012] Stable power transmission is achieved through the engagement of the first tooth of the speed control knob with the second tooth of the drive shaft.

[0013] In some embodiments, the first tooth in the first tooth portion engages with at least a portion of the second tooth in the second tooth portion to accommodate the speed control knob in different angular positions.

[0014] In some embodiments, when the speed control knob is arranged coaxially with the drive shaft, the first tooth in the first tooth section and the second tooth in the second tooth section are fully engaged, thereby improving the stability of power transmission.

[0015] In some embodiments, when the speed control knob is not aligned with the drive shaft, the first tooth in the first tooth portion meshes with a portion of the second tooth in the second tooth portion, ensuring that even when the speed control knob is tilted, the first tooth portion of the speed control knob can still maintain meshing with the second tooth portion of the drive shaft, thereby achieving power transmission.

[0016] In some embodiments, the other end of the drive shaft is provided with a mounting hole, the handle of the speed regulating potentiometer extends into the mounting hole, and the handle is connected to the sliding arm of the speed regulating potentiometer;

[0017] When the drive shaft rotates, it drives the handle to rotate, which in turn moves the sliding arm of the speed regulating potentiometer.

[0018] Insert the handle of the speed control potentiometer into the mounting hole of the drive shaft and keep them in a fixed relative position so that the drive shaft can drive the handle to rotate synchronously when it rotates.

[0019] In some embodiments, the other end of the drive shaft is connected to the sliding arm of the speed regulating potentiometer. When the drive shaft rotates, it drives the sliding arm of the speed regulating potentiometer to move. Directly connecting the drive shaft to the sliding arm of the speed regulating potentiometer simplifies the structure of the speed regulating device.

[0020] This application also provides a food processing machine, including a speed regulating device as described in any of the above embodiments.

[0021] In some embodiments, the food processing machine further includes a motor, which is electrically connected to the circuit board of the food processing machine. When the resistance value of the resistance wire of the speed regulating potentiometer of the speed regulating device changes, the circuit board sends a control signal to the motor to adjust the speed of the motor.

[0022] In some embodiments, the food processing machine further includes a stirring head, which is connected to the output shaft of the motor to achieve stirring of the food. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is an exploded view of the structure of the handheld mixer of this application;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the handheld mixer of this application;

[0026] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0027] Figure 4 This is a schematic diagram showing the positional relationship between the speed control knob and the drive shaft when they are coaxially arranged in this application.

[0028] Figure 5 This is a schematic diagram showing the positional relationship between the speed control knob and the drive shaft when they are not aligned on the same axis.

[0029] Figure 6 This is a schematic diagram showing another positional relationship when the speed control knob and the drive shaft are not set on the same axis as in this application;

[0030] Figure 7 This is a schematic diagram of the structure of the speed control potentiometer of this application, including the speed control knob, transmission shaft, speed control potentiometer, and circuit board, when the speed control potentiometer has a handle.

[0031] Figure 8 This is a schematic diagram of the structure of the speed control knob, transmission shaft, speed control potentiometer, and circuit board when the speed control potentiometer of this application is directly connected to the sliding arm of the speed control potentiometer.

[0032] Reference numerals: 1. Speed ​​control knob; 101. First tooth; 2. Drive shaft; 201. Second tooth; 3. Decorative ring; 4. Circuit board; 5. Speed ​​control potentiometer; 6. Rear shell; 7. Front shell; 8. Return spring; 9. Switch button; 10. Button bracket; 11. Decorative piece; 12. Motor; 13. Connector; 14. Anti-vibration pad. Detailed Implementation

[0033] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0034] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this application will be apparent to those skilled in the art.

[0035] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0036] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0037] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application.

[0038] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0039] Specific embodiments of this application are described thereafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in a variety of substantially any suitable detailed structures.

[0040] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0041] To address the problems in the background art, embodiments of this application provide a speed regulating device applied to a food processing machine, which may be, but is not limited to, a mixer, especially a handheld mixer. The following description uses a handheld mixer as an example.

[0042] Combination Figure 1 and Figure 2 The speed control device includes a speed control knob 1, a transmission shaft 2, and a speed control potentiometer 5.

[0043] The speed control knob 1 is located on the outer casing of the food processor. Taking a handheld blender as an example, the outer casing of the blender may include a front casing 7 and a rear casing 6, which are installed together to form an installation space. The drive shaft 2, speed control potentiometer 5, circuit board 4, motor 12, and other structures can be installed within this installation space. An opening may be formed at the top (or other location) of the installation space for one end of the speed control knob 1 to extend into the installation space, allowing it to connect with the drive shaft 2.

[0044] The speed control knob 1 can be mounted horizontally on the housing or at a certain angle. As one possible method, the speed control knob 1 can be mounted at the opening of the installation space via a decorative ring 3. That is, the decorative ring 3 can serve as the mounting base for the speed control knob 1 on the housing.

[0045] The speed control knob 1 can be set to a disc shape, and the speed control knob 1 can be rotated manually.

[0046] The rotary knob and the outer casing can be set with corresponding speed adjustment scales to clearly show the speed of the hand mixer when the speed adjustment knob 1 is rotated to the current position.

[0047] The drive shaft 2 is installed inside the food processing machine, meaning it can be placed within the aforementioned installation space. One end of the drive shaft 2 can be connected to the first end of the speed control knob 1, which is positioned at different angles, so that the drive shaft 2 can rotate when the speed control knob 1 is rotated. The drive shaft 2 is also connected to the speed control potentiometer 5 and serves as a power transmission mechanism, transmitting power from the speed control knob 1 to the speed control potentiometer 5, enabling the speed control potentiometer 5 to perform corresponding actions.

[0048] The speed control potentiometer 5 is electrically connected to the circuit board 4 of the food processor. To ensure a secure connection between the speed control potentiometer 5 and the circuit board 4, it can be soldered onto the circuit board 4. Additionally, the speed control potentiometer 5 is also connected to the other end of the drive shaft 2. When the drive shaft 2 rotates, the sliding arm of the speed control potentiometer 5 moves, changing the contact point between the sliding arm and the resistance wire of the speed control potentiometer 5. This alters the effective length of the resistance wire and adjusts its effective resistance value. Based on the change in effective resistance value, the circuit board 4 sends a corresponding control signal to the motor 12 of the handheld mixer. This control signal can adjust the speed of the motor 12 of the handheld mixer.

[0049] This embodiment utilizes a mechanical structure for power transmission, enabling speed control knobs 1 arranged at different angles to connect to the drive shaft 2. When the speed control knob 1 rotates, it drives the drive shaft 2 to rotate, thereby causing the speed control potentiometer 5 to operate accordingly. This achieves speed adjustment of the speed control potentiometer 5 when the speed control knob 1 is in different angular positions. It reduces the cost of the special-angle speed control potentiometer 5, improves assembly stability, and simultaneously standardizes parts, increasing assembly efficiency and ensuring product quality.

[0050] For the connection between the speed control knob 1 and the drive shaft 2, a first toothed portion 101 can be provided at the first end of the speed control knob 1. The first toothed portion 101 includes multiple first teeth, which are arranged around the first end of the speed control knob 1. A second toothed portion 201 can be provided at the end of the drive shaft 2 connected to the speed control knob 1, which engages with the first toothed portion 101. The second toothed portion 201 includes multiple second teeth, which are arranged around the end of the drive shaft 2 connected to the speed control knob 1. The multiple first teeth of the first toothed portion 101 and the multiple second teeth of the second toothed portion 201 mesh one-to-one.

[0051] When the speed control knob 1 is manually turned, the first tooth 101 of the speed control knob 1 can drive the second tooth 201 of the drive shaft 2 to rotate, thereby allowing the drive shaft 2 to rotate. Here, through the cooperation between the first tooth 101 of the speed control knob 1 and the second tooth 201 of the drive shaft 2, the stable transmission of power from the speed control knob 1 to the drive shaft 2 is achieved.

[0052] The first tooth in the first tooth portion 101 of the speed control knob 1 engages with at least a portion of the second tooth in the second tooth portion 201 of the drive shaft 2 to adapt to different angular positions of the speed control knob 1. This ensures that the first tooth of the first tooth portion 101 can mesh with at least a portion of the second tooth in the second tooth portion 201 when the speed control knob 1 is in different angular positions. In this way, regardless of the angular position of the speed control knob 1 on the outer shell of the hand mixer, only the same set of drive shaft 2 and speed control potentiometer 5 can be used to adapt to various angular positions of the speed control knob 1. There is no need to customize speed control potentiometers 5 with different angles, making the installation of speed control potentiometer 5 more convenient and reducing costs.

[0053] In some embodiments, such as Figure 4 As shown, when the speed control knob 1 and the drive shaft 2 are arranged coaxially, the first tooth in the first tooth portion 101 and the second tooth in the second tooth portion 201 are all engaged. For example, if the drive shaft 2 is arranged vertically and the speed control knob 1 is placed horizontally on the housing, all the first teeth of the first tooth portion 101 of the speed control knob 1 simultaneously maintain a connection relationship that is engaged with all the second teeth of the second tooth portion 201 of the drive shaft 2, thus ensuring the stability of power transmission.

[0054] In other embodiments, combined with Figure 3 , Figure 5 and Figure 6 For different handheld blenders, the installation angle requirements for the speed control knob 1 vary. Here, the speed control knob 1 is arranged at an angle. When the speed control knob 1 and the transmission shaft 2 are not arranged on the same axis, that is, the rotation axis of the speed control knob 1 and the rotation axis of the transmission shaft are not on the same straight line, some of the first teeth in the first tooth portion 101 mesh with some of the second teeth in the second tooth portion 201. As the speed control knob 1 rotates, the other first teeth of the first tooth portion 101 will mesh with the other second teeth of the second tooth portion 201. Even when the speed control knob 1 is arranged at an angle, the first tooth portion 101 of the speed control knob 1 can still maintain a meshing relationship with the second tooth portion 201 of the transmission shaft 2 to achieve power transmission.

[0055] Taking the vertical arrangement of the drive shaft 2 as an example, the top surfaces of the multiple first teeth of the first tooth section 101 can be inclined downwards so that when the speed adjustment knob 1 is inclined relative to the drive shaft 2, the first tooth and the second tooth can maintain a good meshing relationship.

[0056] In one possible implementation, combined with Figure 7The speed-regulating potentiometer 5 has a handle, and the drive shaft 2 is connected to the handle of the speed-regulating potentiometer 5. For example, the other end of the drive shaft 2 is provided with a mounting hole (not shown in the figure), and the handle is connected to the sliding arm of the speed-regulating potentiometer 5 (located inside the speed-regulating positioner). The handle of the speed-regulating potentiometer 5 extends into the mounting hole, and the handle remains relatively fixed relative to the drive shaft 2. Figure 6 As shown, the handle is an L-shaped rod structure at the top of the speed-adjusting potentiometer 5.

[0057] The handle can be a round shaft or other shapes. For example, the mounting hole can be a hole with a rectangular cross-section, and the handle can be a rod with a rectangular cross-section corresponding to the shape of the mounting hole. Of course, the mounting hole and the handle can also be other shapes; this is merely an example and does not constitute a limitation on the scope of the claims.

[0058] Insert the handle of the speed control potentiometer 5 into the mounting hole of the drive shaft 2 and maintain their relative fixed relationship so that the drive shaft 2 can drive the handle to rotate synchronously when it rotates.

[0059] When the drive shaft 2 rotates, it drives the handle to rotate synchronously, which in turn causes the sliding arm of the speed regulating potentiometer 5 to move. Different rotation angles of the handle result in different distances the sliding arm moves, different contact positions between the sliding arm and the resistance wire, and different effective resistances of the resistance wire.

[0060] In another possible implementation, combined with Figure 8 Unlike the aforementioned connection between the drive shaft 2 and the speed control potentiometer 5 via a handle, the other end of the drive shaft 2 is directly connected to the sliding arm of the speed control potentiometer 5. This means the speed control potentiometer 5 does not require a handle structure. Alternatively, the drive shaft 2 and the speed control potentiometer 5 can be understood as a single integrated structure.

[0061] When the drive shaft 2 rotates, it directly drives the sliding arm of the speed regulating potentiometer 5 to move. Directly connecting the drive shaft 2 to the sliding arm of the speed regulating potentiometer 5 simplifies the structure of the speed regulating device.

[0062] This application also provides a food processing machine, including a speed control device as described in any of the above embodiments. The food processing machine can be a mixer, especially a handheld mixer.

[0063] In some embodiments, the food processing machine further includes a motor 12, which can be installed within the mounting space. The motor 12 is electrically connected to the circuit board 4 of the food processing machine. When the resistance value of the resistance wire of the speed regulating potentiometer 5 changes, the circuit board 4 sends a control signal to the motor 12 to adjust the speed of the motor 12. The motor 12 can have different speeds corresponding to different effective resistance values ​​of the resistance wire of the speed regulating potentiometer 5.

[0064] The food processing machine also includes a mixing head, which is connected to the output shaft of the motor 12 to mix the food. The mixing head can be connected to the motor 12 via a connector 13, and a shock-absorbing pad 14 can be installed at the connection point between the connector 13 and the motor 12 to reduce noise.

[0065] Additionally, a switch button 9 can be installed on the outer casing of the hand blender, and the switch button 9 is mounted on the casing via a button bracket 10. A decorative piece 11 can also be installed at the position corresponding to the button bracket 10, and the decorative piece 11 can be fixed to the front side of the front casing 7. When the button is pressed, the switch button 9 can be electrically connected to the circuit board 4, thus starting or stopping the hand blender. A return spring 8 can also be installed between the switch button 9 and the circuit board 4 so that the switch button 9 can return to its original position when the pressing force on the switch button 9 is released.

[0066] The foregoing has described in detail several embodiments of this application, but this application is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications based on the concept of this application, and all such variations and modifications should fall within the scope of protection claimed in this application.

Claims

1. A speed control device, characterized in that, Applied to a food processor, the speed regulation device includes: A speed regulation knob (1), which is arranged on the outer shell of the food processor; A transmission shaft (2), which is arranged inside the food processor. One end of the transmission shaft (2) can be connected to the first end of the speed regulation knob (1) arranged at different angles, so that when the speed regulation knob (1) rotates, the transmission shaft (2) can rotate; A speed regulation potentiometer (5), which is electrically connected to the circuit board (4) of the food processor. The speed regulation potentiometer (5) is also connected to the other end of the transmission shaft (2), so that when the transmission shaft (2) rotates, the sliding arm of the speed regulation potentiometer (5) moves, so as to change the effective length of the resistance wire of the speed regulation potentiometer (5), adjust the resistance value of the resistance wire, and further adjust the speed of the motor (12) of the food processor.

2. The speed control device according to claim 1, wherein A first tooth part (101) is arranged at the first end of the speed regulation knob (1). The first tooth part (101) includes multiple first teeth, and the multiple first teeth are arranged around the first end of the speed regulation knob (1); The transmission shaft (2) is provided with a second tooth part (201) that cooperates with the first tooth part (101). The second tooth part (201) includes multiple second teeth, and the multiple second teeth are arranged around one end of the transmission shaft (2) connected to the speed regulation knob (1).

3. The speed control device according to claim 2, wherein At least some of the second teeth in the second tooth part (201) cooperate with the first teeth in the first tooth part (101).

4. The speed control device according to claim 2 or 3, characterized in that, When the speed regulation knob (1) and the transmission shaft (2) are coaxially arranged, all the first teeth in the first tooth part (101) are engaged with the second teeth in the second tooth part (201).

5. The speed control device according to claim 2 or 3, characterized in that, When the speed regulation knob (1) and the transmission shaft (2) are not coaxially arranged, some of the first teeth in the first tooth part (101) are engaged with some of the second teeth in the second tooth part (201).

6. The speed control device according to claim 1, wherein An installation hole is arranged at the other end of the transmission shaft (2), and the rotating handle of the speed regulation potentiometer (5) extends into the installation hole, and the rotating handle is connected to the sliding arm of the speed regulation potentiometer (5); When the transmission shaft (2) rotates, it drives the rotating handle to rotate, and further drives the sliding arm of the speed regulation potentiometer (5) to move.

7. The speed control device according to claim 1, characterized in that, The other end of the transmission shaft (2) is connected to the sliding arm of the speed regulation potentiometer (5), and when the transmission shaft (2) rotates, it drives the sliding arm of the speed regulation potentiometer (5) to move.

8. A food processing machine, characterized in that, Including the speed regulation device according to any one of claims 1 to 7.

9. The food processing machine according to claim 8, wherein, The food processor further includes a motor (12), and the motor (12) is electrically connected to the circuit board (4) of the food processor. When the resistance value of the resistance wire of the speed regulation potentiometer (5) of the speed regulation device changes, the circuit board (4) sends a control signal to the motor (12) to adjust the speed of the motor (12).

10. The food processor according to claim 9, wherein The food processor further includes a stirring head, and the stirring head is connected to the output shaft of the motor (12).

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