Knob assembly and electrical equipment

Abstract

The utility model discloses a knob assembly and electrical equipment, and relates to the technical field of electrical equipment. The knob assembly comprises a base, a knob body, a control rotating rod and an anti-accidental-touch structure, the base is provided with a containing cavity, a first opening and a second opening, the first opening and the second opening are communicated with the containing cavity, and the first opening and the second opening are formed in the two opposite side walls of the containing cavity; the knob body is movably installed in the containing cavity and at least partially exposed out of the first opening, and a containing groove is formed in the knob body. The control rotating rod extends into the containing cavity from the second opening and corresponds to the groove opening of the containing groove. The accidental touch prevention structure is arranged between the knob body and the base and used for limiting movement of the knob body relative to the base. According to the technical scheme provided by the utility model, the accidental touch prevention performance of the knob assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a knob assembly and electrical equipment. Background Technology

[0002] Taking electrical equipment as an example, electrical equipment knobs are widely used in power distribution control systems, but the current electrical equipment knob structure generally has the defect of being easy to misoperate.

[0003] Especially in electrical equipment that requires protection against misoperation and a high level of safety, the existing knob structure is easily affected by external forces and may change direction, thereby altering the state of the electrical equipment and potentially causing safety accidents, threatening the safety of operators and equipment. Utility Model Content

[0004] The main purpose of this invention is to provide a knob assembly and electrical device that aims to improve the anti-accidental contact performance of the knob assembly.

[0005] To achieve the above objectives, this utility model proposes a knob assembly, comprising:

[0006] A base having a receiving cavity, the base having a first opening and a second opening communicating with the receiving cavity, the first opening and the second opening being located on opposite side walls of the receiving cavity;

[0007] A knob body is movably mounted in the receiving cavity and at least partially exposed outside the first opening; the knob body is provided with a receiving groove.

[0008] A control lever extends into the receiving cavity at the second opening and corresponds to the opening of the receiving groove; and,

[0009] An anti-accidental-touch structure is provided between the knob body and the base to restrict the movement of the knob body relative to the base.

[0010] In one embodiment, the control lever is provided with a raised rib, and the receiving groove is provided with a sliding groove, the raised rib and the sliding groove corresponding to each other;

[0011] The knob body can move along the rib toward the base so that the control lever can be engaged in the receiving groove, and the knob body can drive the control lever to rotate relative to the base.

[0012] In one embodiment, the anti-accidental collision structure includes:

[0013] An elastic element is sleeved on the control lever. One end of the elastic element abuts against the base, and the other end abuts against the receiving groove, so that the knob body tends to move away from the control lever.

[0014] In one embodiment, the base includes a limiting portion disposed along the periphery of the second opening and facing the knob body, and one end of the limiting portion away from the second opening abuts against the elastic member.

[0015] In one embodiment, the base is provided with a snap-fit ​​part, and the knob body is provided with a corresponding snap-fit ​​groove. The snap-fit ​​part snaps into the snap-fit ​​groove to restrict the knob body within the receiving cavity.

[0016] In one embodiment, the anti-accidental collision structure includes:

[0017] A first magnetic component is disposed on the base; and,

[0018] A second magnetic component is disposed on the knob body and corresponds to the first magnetic component;

[0019] The second magnetic component can be attracted to the first magnetic component to lock the knob body to the base.

[0020] In one embodiment, multiple first magnetic elements are provided, and the multiple first magnetic elements are spaced apart on the base; and / or,

[0021] The second magnetic element is provided in multiple forms, and the multiple second magnetic elements are arranged at intervals on the knob body.

[0022] In one embodiment, the base is provided with a first mounting groove, and the first magnetic element is disposed in the first mounting groove; and / or,

[0023] The knob body is provided with a second mounting groove, and the second magnetic component is provided in the second mounting groove.

[0024] In one embodiment, the anti-accidental collision structure further includes a buffer member disposed in the receiving groove for abutting against the control lever.

[0025] This utility model also proposes an electrical device, including a housing and the aforementioned knob assembly, wherein the base of the knob assembly is fixed to the housing.

[0026] The technical solution of this utility model involves incorporating a base, a knob body, a control lever, and an anti-accidental-collision structure into a knob assembly. The base has a receiving cavity with a first opening and a second opening communicating with it, located on opposite side walls of the cavity. The knob body is movably mounted within the receiving cavity and at least partially exposed through the first opening, with a receiving groove within the body. The control lever extends into the receiving cavity through the second opening and corresponds to the opening of the receiving groove. The anti-accidental-collision structure is located between the knob body and the base to restrict the movement of the knob body relative to the base. Compared to existing knob assemblies that are prone to rotation under external force, this utility model's anti-accidental-collision structure between the knob body and the base prevents the knob body from rotating the control lever in the event of accidental external force, thus improving the anti-accidental-collision performance of the knob assembly. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of a structure of an embodiment of the knob assembly and electrical device provided by this utility model;

[0029] Figure 2 for Figure 1 A cross-sectional view of an embodiment of the central knob assembly;

[0030] Figure 3 A schematic diagram of an embodiment of the base and control lever in the knob assembly provided by this utility model;

[0031] Figure 4 A schematic diagram of the structure of a knob body in a knob assembly provided by this utility model;

[0032] Figure 5 for Figure 4 A schematic diagram of an embodiment of the central knob body from another perspective.

[0033] Explanation of icon numbers:

[0034] 100. Knob assembly;

[0035] 110. Base; 111. Receiving cavity; 112. First opening; 113. Second opening; 114. Snap-fit ​​part; 115. Limiting part;

[0036] 120. Knob body; 121. Receiving groove; 122. Slide groove; 123. Knob handle; 124. Snap-in groove; 125. Second mounting groove; 126. Buffer; 127. Third opening;

[0037] 130. Control lever; 131. Rib;

[0038] 140. Anti-accidental contact structure; 141. Elastic element; 142. First magnetic element; 143. Second magnetic element;

[0039] 200. Electrical equipment; 210. Housing.

[0040] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0042] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0044] Taking electrical equipment as an example, electrical equipment knobs are widely used in power distribution control systems, but the current electrical equipment knob structure generally suffers from the defect of being easy to misoperate.

[0045] Especially in electrical equipment that requires protection against misoperation and a high level of safety, the existing knob structure is easily affected by external forces and may change direction, thereby altering the state of the electrical equipment and potentially causing safety accidents, threatening the safety of operators and equipment.

[0046] This utility model proposes a knob assembly and electrical equipment to improve the anti-accidental contact performance of the knob assembly.

[0047] Please see Figure 1 and Figure 2 In one embodiment, the knob assembly 100 includes a base 110, a knob body 120, a control lever 130, and an anti-accidental contact structure 140.

[0048] The base 110 is used to connect to the electrical device 200 to mount the knob assembly 100 onto the electrical device 200. In one embodiment, the base 110 has a receiving cavity 111 for providing a mounting base and support for the knob assembly 100. The base 110 also has a first opening 112 and a second opening 113 communicating with the receiving cavity 111, the first opening 112 and the second opening 113 being located on opposite side walls of the receiving cavity 111. In one embodiment, the shape of the first opening 112 and the shape of the second opening 113 are both circular. Of course, in other embodiments, the shapes of the first opening 112 and the second opening 113 may also be rectangular or other irregular shapes, and no specific limitation is made here. The dimensions of the first opening 112 and the second opening 113 can be flexibly set according to actual needs, and no limitation is made here. The material of the base 110 may be polypropylene, polyvinyl chloride, or acrylonitrile-butadiene-styrene copolymer, etc., and no limitation is made here on the specific material of the base 110.

[0049] The knob body 120 is movably mounted in the receiving cavity 111 and at least partially exposed in the first opening 112. The knob body 120 also has a receiving groove 121. In one embodiment, under external force, the knob body 120 can reciprocate at the first opening 112 and rotate relative to the base 110. One end of the knob body 120 is confined within the receiving cavity 111 to prevent the knob body 120 from detaching from the base 110. In another embodiment, the knob body 120 has a receiving space and a third opening 127 communicating with the receiving space. The side of the knob body 120 with the third opening 127 is mounted within the receiving cavity 111 of the base 110. The knob body 120 and the base 110 form a sealed space to protect the internal structure. In one embodiment, the knob body 120 includes a knob handle 123, which is exposed through the first opening 112 to facilitate applying external force to the knob body 120, i.e., pressing or rotating the knob body 120, so that the knob body 120 reciprocates at the first opening 112 or rotates relative to the base 110. The knob body 120 can be made of polyethylene, polyvinyl chloride, or acrylonitrile-butadiene-styrene copolymer, etc., and can be integrally molded by injection molding or by subsequent secondary processing. Here, no restrictions are placed on the specific material and molding process of the knob body 120.

[0050] The control lever 130 extends into the receiving cavity 111 at the second opening 113 and corresponds to the opening of the receiving groove 121. Specifically, in one embodiment, the control lever 130 is an operating lever of the electrical device 200, used to control the electrical device 200. The specific function of the control lever 130 is not limited here. In one embodiment, the receiving groove 121 is located on the side of the knob handle 123 facing the base 110, and the opening of the receiving groove 121 faces the base 110. The control lever 130 can be engaged in the receiving groove 121 so that the knob body 120 can drive the control lever 130 to rotate simultaneously relative to the base 110. Specifically, in one embodiment, the size of the third opening 127 is larger than the size of the second opening 113 to ensure that the control lever 130 can extend into the receiving cavity 111 and engage in the receiving groove 121. The specific size of the third opening 127 is not limited here.

[0051] An anti-accidental-touch structure 140 is disposed between the knob body 120 and the base 110 to restrict the movement of the knob body 120 relative to the base 110. In one embodiment, the anti-accidental-touch structure 140 causes the knob body 120 to tend to move away from the base 110, so that the control lever 130 disengages from the receiving groove 121, preventing the knob body 120 from rotating when accidentally touched by an external force, thus improving the safety of the knob assembly 100. Furthermore, in one embodiment, the anti-accidental-touch structure 140 can also lock the knob body 120 to the base 110, preventing the knob body 120 from rotating when accidentally touched by an external force, and ensuring that the control lever 130 can smoothly engage with the receiving groove 121 when using the knob assembly 100.

[0052] The technical solution of this utility model embodiment includes a base 110, a knob body 120, a control lever 130, and an anti-accidental contact structure 140 in a knob assembly 100. The base 110 has a receiving cavity 111, with a first opening 112 and a second opening 113 communicating with the receiving cavity 111. The first opening 112 and the second opening 113 are located on opposite side walls of the receiving cavity 111. The knob body 120 is movably mounted in the receiving cavity 111 and at least partially exposed through the first opening 112. A receiving groove 121 is provided inside the knob body 120. The control lever 130 extends into the receiving cavity 111 at the second opening 113 and corresponds to the opening of the receiving groove 121. The anti-accidental contact structure 140 is located between the knob body 120 and the base 110 to restrict the movement of the knob body 120 relative to the base 110. Thus, when using the knob assembly 100, simply press the knob body 120 to engage the control lever 130 in the receiving groove 121, and then rotate the knob body 120 to rotate the control lever 130. When the knob assembly 100 is not in use, the anti-accidental contact structure 140 separates the knob body 120 from the control lever 130 and locks the knob body 120 to the base 110, thereby improving the anti-accidental contact performance of the knob assembly 100 and improving the safety of using the knob assembly 100.

[0053] Please see Figures 2 to 4 In one embodiment, the control lever 130 is provided with a raised rib 131, and the receiving groove 121 is provided with a sliding groove 122, with the raised rib 131 and the sliding groove 122 corresponding to each other. The knob body 120 can move along the raised rib 131 toward the base 110 so that the control lever 130 can be engaged in the receiving groove 121, and the knob body 120 can drive the control lever 130 to rotate relative to the base 110.

[0054] In one embodiment, the control lever 130 has a circular cross-section, with two opposing ribs 131 on it. The receiving groove 121 has two sliding grooves 122 on its sidewall. The ribs 131 and sliding grooves 122 correspond one-to-one. The knob body 120 can move along the ribs 131 toward the base 110, allowing the control lever 130 to engage with the receiving groove 121. In one embodiment, the size of the receiving groove 121 is adapted to the size of the control lever 130 to prevent the ribs 131 from sliding out of the sliding grooves 122 when the control lever 130 engages with the receiving groove 121. Of course, in other embodiments, one or more ribs 131 may be provided, and one or more sliding grooves 122 may be provided accordingly. The specific number of ribs 131 and sliding grooves 122 is not limited here. In another embodiment, both the cross-section of the control lever 130 and the cross-section of the receiving groove 121 are rectangular. No ribs 131 are provided on the control lever 130, and no sliding grooves 122 are provided in the receiving groove 121. Of course, in other embodiments, the cross-sections of the control lever 130 and the receiving groove 121 can also be triangular, elliptical, or irregular in shape. Here, the specific shape and structure of the control lever 130 and the receiving groove 121 are not limited, as long as it can be ensured that when the control lever 130 is inserted into the receiving groove 121, the knob body 120 can drive the control lever 130 to rotate relative to the base 110.

[0055] Please see Figure 2 In one embodiment, the anti-accidental contact structure 140 includes an elastic element 141, which is sleeved on the control lever 130. One end of the elastic element 141 abuts against the base 110, and the other end abuts against the receiving groove 121, so that the knob body 120 tends to move away from the control lever 130.

[0056] In one embodiment, the elastic element 141 has good elasticity. Under the action of the elasticity, the elastic element 141 causes the knob body 120 to tend to move away from the control lever 130. The elastic element 141 can be a spring, a silicone sleeve, etc., and no specific limitation is made here. Specifically, in one embodiment, the base 110 includes a limiting part 115, which is disposed along the periphery of the second opening 113 and faces the knob body 120. One end of the limiting part 115 away from the second opening 113 abuts against the elastic element 141. The groove wall of the receiving groove 121 cooperates with the limiting part 115 to lock the elastic element 141 between the receiving groove 121 and the limiting part 115, ensuring the function of the elastic element 141. In another embodiment, the elastic element 141 can be directly disposed within the receiving groove 121, and at least partially exposed outside the receiving groove 121. One end of the elastic element 141 exposed outside the receiving groove 121 is directly connected to the control knob 130. Alternatively, in other embodiments, one end of the elastic element 141 can directly abut against the periphery of the second opening 113, and the other end can abut against the opening of the receiving groove 121, thus ensuring the functionality of the elastic element 141. Here, the specific location of the elastic element 141 is not limited, as long as the anti-accidental contact function of the knob assembly 100 is ensured.

[0057] Thus, when using the knob assembly 100, pressing the knob body 120 causes it to move along the rib 131 towards the base 110, compressing the elastic element 141 and causing the control lever 130 to engage in the receiving groove 121, ensuring that the knob body 120 drives the control lever 130 to rotate. When the knob assembly 100 is not in use, the elastic force of the elastic element 141 causes the knob body 120 to tend to move away from the control lever 130, thereby causing the control lever 130 to disengage from the receiving groove 121. The technical solution of this embodiment avoids accidental contact with the knob body 120 that could cause the control lever 130 to rotate, while ensuring the normal use of the knob assembly 100, improving the anti-accidental contact performance of the knob assembly 100, and thus improving the safety of the knob assembly 100.

[0058] Please see Figures 2 to 5 In one embodiment, the base 110 is provided with a snap-fit ​​part 114, and the knob body 120 is provided with a corresponding snap-fit ​​groove 124. The snap-fit ​​part 114 snaps into the snap-fit ​​groove 124 to restrict the knob body 120 within the receiving cavity 111.

[0059] Specifically, in one embodiment, the latching portion 114 is an annular protrusion provided along the periphery of the second opening 113, and the annular protrusion is positioned towards the first opening 112. The corresponding latching groove 124 of the knob body 120 is an annular groove. In another embodiment, the base 110 is provided with the latching groove 124, and the knob body 120 is provided with the latching portion 114. Of course, in other embodiments, a limiting plate can also be provided on the base 110, and the knob body 120 is provided with another limiting plate. The two limiting plates abut against each other to restrict the knob body 120 within the receiving cavity 111. Here, the method by which the base 110 restricts the knob body 120 is not limited.

[0060] Thus, when using the knob assembly 100, pressing the knob body 120 separates the locking part 114 from the slot 124, allowing the knob body 120 to move relative to the base 110. When the knob assembly 100 is not in use, the elastic member 141 causes the knob body 120 to tend to move away from the control lever 130, and the locking part 114 engages with the slot 124 to confine the knob body 120 within the receiving cavity 111, preventing the knob body 120 from detaching from the base 110 and ensuring the normal use of the knob assembly 100.

[0061] Please see Figure 2 In one embodiment, the anti-accidental contact structure 140 further includes a first magnetic element 142 and a second magnetic element 143. The first magnetic element 142 is disposed on the base 110; the second magnetic element 143 is disposed on the knob body 120 and corresponds to the first magnetic element 142. The second magnetic element 143 can attract the first magnetic element 142 to lock the knob body 120 to the base 110.

[0062] In one embodiment, the control lever 130 is an operating lever for controlling the switch of the electrical device 200. The base 110 is provided with a first magnetic element 142 at the corresponding open and closed positions of the electrical device 200, and the knob body 120 is provided with a second magnetic element 143 at the corresponding positions. Thus, when the knob assembly 100 needs to be used to open or close the electrical device 200, the knob body 120 is pressed and rotated to rotate the control lever 130 to the open or closed position. At this time, the first magnetic element 142 and the second magnetic element 143 at the corresponding open or closed positions attract each other to lock the knob body 120 to the base 110. In another embodiment, the control lever 130 can put the electrical device 200 into multiple different modes or states. Multiple first magnetic elements 142 are correspondingly provided, spaced apart on the base 110 to correspond to different modes or states of the electrical device 200. The second magnetic elements 143 can attract different first magnetic elements 142 to lock the knob body 120 to the base 110. Multiple second magnetic elements 143 may be provided, with the multiple second magnetic elements 143 spaced apart on the knob body 120. Of course, in other embodiments, only one second magnetic element 143 may be provided. The position and number of the first magnetic element 142 and the second magnetic element 143 can be flexibly set according to actual needs. Here, no limitation is made on the specific position and number of the first magnetic element 142 and the second magnetic element 143.

[0063] Specifically, in one embodiment, the base 110 is provided with a first mounting groove, a first magnetic element 142 is disposed in the first mounting groove, the knob body 120 is provided with a second mounting groove 125, and a second magnetic element 143 is disposed in the second mounting groove 125. The openings of the first mounting groove and the second mounting groove 125 are arranged opposite to each other to ensure that the first magnetic element 142 and the second magnetic element 143 can attract each other. Of course, in other embodiments, the first magnetic element 142 and the base 110, and the second magnetic element 143 and the knob body 120 can be connected by means of bonding, riveting, etc., which is not limited here.

[0064] The technical solution of this utility model embodiment provides a first magnetic element 142 and a second magnetic element 143. The first magnetic element 142 and the second magnetic element 143 attract each other to lock the knob body 120 to the base 110, which prevents the knob body 120 from rotating due to accidental contact. It also ensures that the control lever 130 can be smoothly inserted into the receiving groove 121 when the knob body 120 is pressed, thereby ensuring the normal use of the knob assembly 100 and further improving the anti-accidental contact performance of the knob assembly 100.

[0065] Please see Figure 2 In one embodiment, the anti-accidental contact structure 140 further includes a buffer 126, which is disposed in the receiving groove 121 and is used to abut against the control lever 130.

[0066] Specifically, in one embodiment, the buffer 126 is a silicone pad fixed to the receiving groove 121. When the control lever 130 is engaged in the receiving groove 121, the buffer 126 abuts against the control lever 130. Of course, in other embodiments, the buffer 126 can also be a rubber pad, a spring, or foam, etc. Here, no specific limitation is made on the buffer 126.

[0067] In the technical solution of this utility model embodiment, by setting the buffer 126, it can be avoided that when the pressing force is too large when pressing the knob body 120, the control lever 130 and the knob handle 123 will impact each other, further protecting the knob body 120 and improving the service life of the knob assembly 100.

[0068] Please see Figure 1 This utility model also proposes an electrical device 200, including a housing 210 and a knob assembly 100 from the above embodiments. The base 110 of the knob assembly 100 is fixed to the housing 210, and the specific structure of the knob assembly 100 is as described in the above embodiments. Since this electrical device 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0069] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A knob assembly, characterized by The application relates to a knob assembly. The knob assembly comprises: a base provided with a receiving cavity, the base being provided with a first opening and a second opening communicating with the receiving cavity, the first opening and the second opening being arranged on opposite sidewalls of the receiving cavity; a knob body movably arranged in the receiving cavity and at least partially exposed from the first opening, the knob body being internally provided with a receiving groove; a control rotating rod extending into the receiving cavity at the second opening and corresponding to the receiving groove; and 2. The knob assembly of claim 1, wherein, an anti-misoperation structure arranged between the knob body and the base for limiting the movement of the knob body relative to the base. The control rotating rod is provided with a convex rib, and the receiving groove is provided with a sliding groove corresponding to the convex rib.

3. The knob assembly of claim 1, wherein, The knob body can move towards the base along the convex rib so that the control rotating rod is clamped into the receiving groove, and the knob body can drive the control rotating rod to rotate relative to the base. The anti-misoperation structure comprises:

4. The knob assembly of claim 3, wherein, a resilient member sleeved on the control rotating rod, one end of the resilient member abutting against the base, and the other end abutting against the receiving groove, so that the knob body has a tendency to move away from the control rotating rod.

5. The knob assembly of claim 1, wherein, The base is provided with a limiting portion arranged along the periphery of the second opening and facing the knob body, and one end of the limiting portion away from the second opening abutting against the resilient member.

6. The knob assembly of claim 1, wherein, The base is provided with a clamping portion, and the knob body is correspondingly provided with a clamping groove, the clamping portion being clamped into the clamping groove to limit the knob body in the receiving cavity. The anti-misoperation structure comprises: a first magnetic member arranged on the base; and a second magnetic member arranged on the knob body and corresponding to the first magnetic member; 7. The knob assembly of claim 6, wherein The second magnetic member can be attracted to the first magnetic member to lock the knob body on the base. The first magnetic member is provided with a plurality of first magnetic members arranged on the base in intervals; and / or 8. The knob assembly of claim 6, wherein, The second magnetic member is provided with a plurality of second magnetic members arranged on the knob body in intervals. The base is provided with a first mounting groove, and the first magnetic member is arranged in the first mounting groove; and / or 9. The knob assembly of claim 1, wherein, The knob body is provided with a second mounting groove, and the second magnetic member is arranged in the second mounting groove. The anti-misoperation structure further comprises a buffer member arranged in the receiving groove and abutting against the control rotating rod.

10. An electrical device comprising a shell and the knob assembly according to any one of claims 1 to 9, the base of the knob assembly being fixed to the shell.

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