Knob structure of household electrical appliance

Abstract

The utility model discloses a knob structure of a household electrical appliance, which belongs to the technical field of household electrical appliances and comprises a machine body, the machine body is provided with a machine body opening, a machine body limiting part, an electric control piece and a knob, and the electric control piece and the knob are respectively positioned on the inner side and the outer side of the machine body opening and are connected in a matched manner. A knob limiting part is arranged on the knob, and the knob is in limiting fit with the machine body limiting part through the knob limiting part during rotation. According to the structure, the movement range and position of the knob are limited through limiting cooperation of the knob limiting part and the machine body limiting part, then the rotation range and position of the electric control part are limited, it is ensured that the electric control part stops at the set position, meanwhile, the situation that the electric control part exceeds or deviates in the rotation process is avoided, the working error of the electric control part is reduced, and the working efficiency is improved. In addition, the rotary knob limiting part and the machine body limiting part are arranged on the rotary knob and the machine body respectively, the internal structure of the electric control piece cannot be affected, the production cost is low, the assembly process is simple, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of home appliance technology, specifically a knob structure for a home appliance. Background Technology

[0002] Existing household appliances typically include timers for starting and stopping. These timers usually use a rotating knob to preset the time, but over time, the knob may shift, leading to inaccurate preset times and poor stability. Furthermore, excessive knob rotation can damage internal structures, hindering long-term use. To address these issues, limit mechanisms are often incorporated into the timer to prevent over-rotation and low precision. However, these limit mechanisms are complex, resulting in high production costs. Additionally, they require individual assembly and are difficult to install. Therefore, further improvements are necessary. Utility Model Content

[0003] The present invention aims to provide a knob structure for household appliances to overcome the shortcomings of the prior art.

[0004] A knob structure for a home appliance designed for this purpose includes a body, on which a body opening, a body limiting part, an electrical control part, and a knob are provided. The electrical control part and the knob are respectively located on the inner and outer sides of the body opening and are connected in cooperation. The knob is provided with a knob limiting part, and when rotated, the knob limiting part is limited and cooperates with the body limiting part.

[0005] The body limiting part is provided in two parts and protrudes from the outer wall of the body, with the two body limiting parts symmetrically located on the outside of the body opening.

[0006] One side of the body limiting part is limited and engaged with the knob limiting part, and the other side is provided with a limiting reinforcement part.

[0007] The knob is circular and has a hole at its center. The knob is connected to the electrical control via the hole. There are two knob limiting parts, which extend straight along opposite sides of the hole and are connected to the inner wall of the knob's circular ring.

[0008] A knob reinforcement is provided between the outer side of the post and the inner wall of the knob's ring. The knob reinforcement extends in a straight line and forms an angle with the knob limiting part. The knob reinforcement is provided with a clearance part corresponding to the body limiting part.

[0009] The outer wall of the machine body is provided with an annular positioning part, and the knob is covered on the annular positioning part and rotates around the periphery of the annular positioning part.

[0010] The knob is also provided with a decorative ring, an annular mounting groove, a snap-fit ​​part, and a snap-fit ​​mating part, which engages with the decorative ring through the snap-fit ​​mating part.

[0011] The electrical control unit is fixed to the machine body by fasteners or buckles. The electrical control unit is provided with a rotating shaft, which extends out of the opening in the machine body and is connected to the post.

[0012] The body is provided with a body fixing part, and a plurality of body fixing parts are arranged in a ring array around the periphery of the opening of the body. The electrical control part is provided with an electrical control fixing part, and the number of electrical control fixing parts is the same as the number of body fixing parts and corresponds to each other. The electrical control fixing parts and the body fixing parts are fixedly engaged by fasteners.

[0013] The knob is provided with an anti-slip part around its periphery, and an indicator part is also provided on the outer wall of the knob. A rotation mark is provided on the outer wall of the machine body corresponding to the indicator part.

[0014] The knob of this invention is limited by a knob limiting part and a body limiting part, thereby restricting the range and position of the knob's movement, and thus limiting the rotation range and position of the electronic control unit. This ensures that the electronic control unit stops at the set position and prevents it from exceeding or deviating during rotation, thereby reducing the working error of the electronic control unit and improving its rotation accuracy. In addition, the knob limiting part and the body limiting part are respectively set on the knob and the body, which will not affect the internal structure of the electronic control unit. It has low production cost, simple assembly process, and strong practicality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model.

[0016] Figure 2 This is an exploded structural diagram of an embodiment of the present invention.

[0017] Figure 3 for Figure 2 A magnified structural diagram of point A in the diagram.

[0018] Figure 4 This is another exploded structural diagram of an embodiment of the present invention.

[0019] Figure 5 This is a cross-sectional view of the knob limiting part and the body limiting part according to an embodiment of the present invention.

[0020] Figure 6This is a cross-sectional structural diagram of the knob limiting part and the body limiting part in an embodiment of the present invention.

[0021] Figure 7 for Figure 5 A magnified structural diagram of point B in the diagram.

[0022] Figure 8 for Figure 6 A magnified structural diagram at point C.

[0023] Figure 9 This is an exploded view of the knob and decorative ring.

[0024] Figure 10 This is an exploded structural diagram of the knob and decorative ring from another perspective. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] See Figures 1-10 The knob structure of this home appliance includes a body, on which a body opening 1, a body limiting part 2, an electrical control 3 and a knob 4 are provided. The electrical control 3 and the knob 4 are located on the inner and outer sides of the body opening 1 respectively and are connected to each other. The knob 4 is provided with a knob limiting part 5, and when rotated, the knob limiting part 5 is limited and cooperates with the body limiting part 2.

[0028] In this embodiment, the knob 4 is limited by the knob limiting part 5 and the body limiting part 2 of the machine body to restrict the range and position of the knob 4, thereby limiting the rotation range and position of the electronic control 3. This ensures that the electronic control 3 stops at the set position and also prevents the electronic control 3 from exceeding or deviating during rotation, thereby reducing the working error of the electronic control 3 and improving the rotation accuracy of the electronic control 3. In addition, the knob limiting part 5 and the body limiting part 2 are respectively set on the knob 4 and the machine body, which will not affect the internal structure of the electronic control 3. It has low production cost, simple assembly process, and strong practicality.

[0029] There are two body limiting parts 2, which protrude from the outer wall of the body. The two body limiting parts 2 are symmetrically located on the outside of the body opening 1.

[0030] One side of the body limiting part 2 is limited and cooperates with the knob limiting part 5, and the other side is provided with a limiting reinforcement part 6.

[0031] In this embodiment, the body limiting part 2 is strengthened by the limiting reinforcement part 6 so that when the knob limiting part 5 acts on the body limiting part 2, the body limiting part 2 will not bend, deform or even break, so as to ensure that the knob 4 is limited to rotating within the specified range and position.

[0032] The knob 4 is circular and has a hole 7 at its center. The knob 4 is connected to the electrical control 3 through the hole 7. There are two knob limiting parts 5, which extend straight along opposite sides of the hole 7 and are connected to the inner wall of the ring of the knob 4.

[0033] In this embodiment, the two body limiting parts 2 and the knob limiting part 5 are symmetrically arranged so that the knob 4 can only rotate within a range of 180 degrees, thereby avoiding the problem of excessive rotation of the knob 4.

[0034] A knob reinforcement part 8 is also provided between the outer side of the post 7 and the inner wall of the ring of the knob 4. The knob reinforcement part 8 extends in a straight line and forms an angle with the knob limiting part 5. The knob reinforcement part 8 is provided with a clearance part 9 corresponding to the body limiting part 2.

[0035] In this embodiment, there are two knob reinforcement parts 8, which extend in a straight line along the opposite sides of the hole post 7. The knob reinforcement parts 8 can enhance the connection stability between the knob 4 and the hole post 7. At the same time, the two knob reinforcement parts 8 and the two knob limiting parts 5 form a cross-shaped fit, which can further improve the overall strength of the knob 4.

[0036] The outer wall of the machine body is provided with an annular positioning part 10, and the knob 4 is covered on the annular positioning part 10 and rotates around the annular positioning part 10.

[0037] In this embodiment, the ring shape of the knob 4 corresponds to the shape of the annular positioning part 10, and the inner wall of the ring of the knob 4 is matched with the outer periphery of the annular positioning part 10 to ensure that the knob 4 will not deviate or wobble when rotating, so as to ensure the positioning rotation of the knob 4.

[0038] The knob 4 is also provided with a decorative ring 11, an annular mounting groove 12, a snap-fit ​​part 13, and a snap-fit ​​mating part 14, which engages with the snap-fit ​​part 13.

[0039] In this embodiment, the decorative ring 11 is assembled onto the annular mounting groove 12 of the knob 4 by snap-fit, which not only has a simple structure, is easy to assemble and is stable, but also improves the appearance of the knob 4.

[0040] The electrical control unit 3 is fixed to the machine body by fasteners or buckles. The electrical control unit 3 is provided with a rotating shaft 15, which extends out of the opening 1 of the machine body and is connected to the post 7.

[0041] In this embodiment, the post 7 is inserted into the rotating shaft 15, which enables the knob 4 and the electrical control 3 to be connected. At the same time, the knob 4 can also be pulled out directly from the rotating shaft 15 for the convenience of daily maintenance of the product.

[0042] The body is provided with a body fixing part 16, and a plurality of body fixing parts 16 are arranged in a ring array around the outer periphery of the body opening 1. The electrical control part 3 is provided with an electrical control fixing part, and the number of electrical control fixing parts is the same as the number of body fixing parts 16 and they correspond to each other. The electrical control fixing parts and the body fixing parts 16 are fixedly engaged by fasteners.

[0043] During assembly, the electrical control 3 rests on the inside of the opening 1 of the machine body, and its electrical control fixing part corresponds to the machine body fixing part 16. The fastener is fastened on the electrical control fixing part through the machine body fixing part 16, so that the electrical control 3 and the machine body can be fixed, making the assembly convenient and stable.

[0044] The knob 4 is provided with an anti-slip part 17 on its outer periphery, which allows the user to rotate the knob 4 stably. The outer wall of the knob 4 is also provided with an indicator part 18, and a rotation mark is provided on the outer wall of the machine body corresponding to the indicator part 18. When the knob 4 is rotated, the indicator part 18 and the rotation mark correspond to each other, so that the user can know the rotation position of the knob 4 and the electrical control status of the control unit 3.

[0045] In this embodiment, the home appliances can be coffee machines, steamers, ovens, microwave ovens, washing machines, dishwashers, rice cookers, kettles, etc. The electrical control 3 is a timer, which can be driven by rotating the knob 4 to achieve timing, thereby controlling the working status of the above-mentioned home appliances.

[0046] In this embodiment, the machine body includes a base 20 and a housing 21 that are fixedly fitted together. The machine body opening 1, the machine body limiting part 2, the annular positioning part 10, and the machine body fixing part 16 are all provided on the base 20. An electric control board is also provided on the base 20, and the electric control board is electrically connected to the electric control part 3.

[0047] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A knob structure for a household appliance, comprising a body, characterized in that: The body is provided with a body opening (1), a body limiting part (2), an electrical control (3) and a knob (4). The electrical control (3) and the knob (4) are located on the inner and outer sides of the body opening (1) respectively and are connected in cooperation. The knob (4) is provided with a knob limiting part (5), and when rotating, it is limited and cooperated with the body limiting part (2) through the knob limiting part (5).

2. The knob structure of the household appliance according to claim 1, characterized in that: The body limiting part (2) is provided in two parts and protrudes from the outer wall of the body. The two body limiting parts (2) are symmetrically located outside the body opening (1).

3. The knob structure of the household appliance according to claim 2, characterized in that: The body limiting part (2) is limited and cooperates with the knob limiting part (5) on one side, and a limiting reinforcement part (6) is provided on the other side.

4. The knob structure of the household appliance according to claim 2, characterized in that: The knob (4) is circular and has a hole (7) at its center. The knob (4) is connected to the electrical control (3) through the hole (7). There are two knob limiting parts (5), which extend straight along opposite sides of the hole (7) and are connected to the inner wall of the ring of the knob (4).

5. The knob structure of the household appliance according to claim 4, characterized in that: A knob reinforcement part (8) is also provided between the outer side of the hole post (7) and the inner wall of the ring of the knob (4). The knob reinforcement part (8) extends in a straight line and forms an angle with the knob limiting part (5). The knob reinforcement part (8) is provided with a clearance part (9) corresponding to the body limiting part (2).

6. The knob structure of the household appliance according to claim 4, characterized in that: The outer wall of the machine body is provided with an annular positioning part (10), and the knob (4) is covered on the annular positioning part (10) and rotates around the annular positioning part (10).

7. The knob structure of the household appliance according to claim 4, characterized in that: The knob (4) is also provided with a decorative ring (11), the knob (4) is provided with an annular assembly groove (12), the annular assembly groove (12) is provided with a snap-fit ​​part (13), the decorative ring (11) is provided with a snap-fit ​​mating part (14), and the snap-fit ​​mating part (14) is snap-fit ​​mating with the snap-fit ​​part (13).

8. The knob structure of the household appliance according to claim 4, characterized in that: The electrical control unit (3) is fixed to the machine body by fasteners or buckles. The electrical control unit (3) is provided with a rotating shaft (15). The rotating shaft (15) extends out of the opening (1) of the machine body and is connected to the post (7).

9. The knob structure of the household appliance according to claim 8, characterized in that: The body is provided with a body fixing part (16), and the body fixing part (16) is provided in a plurality of them and arranged in a ring array around the opening (1) of the body. The electrical control part (3) is provided with an electrical control fixing part. The number of electrical control fixing parts is the same as the number of body fixing parts (16) and they correspond to each other. The electrical control fixing parts and the body fixing parts (16) are fixedly engaged by fasteners.

10. The knob structure of the household appliance according to claim 1, characterized in that: The knob (4) is provided with an anti-slip part (17) around its periphery, and the outer wall of the knob (4) is also provided with an indicator part (18). The outer wall of the machine body is provided with a rotation mark corresponding to the indicator part (18).

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