A knob that is easy to assemble

Abstract

This utility model discloses an easy-to-assemble knob, relating to the field of knob technology. It includes a circular mounting hole on the top surface of a microwave oven control panel, with a knob mounting base fixedly connected within the hole. The knob mounting base has a detachable connecting device inside, comprising a connecting cylinder located within the knob mounting base. The connecting cylinder has a connector for synchronously connecting the cylinder and the knob mounting base. The outer wall of the connecting cylinder has a blocking device to prevent the connecting cylinder from detaching from the knob mounting base longitudinally. Compared to traditional one-piece knobs, this utility model allows for easy disassembly and replacement of individual parts when the knob is damaged, eliminating the need for professional repair. Users can simply purchase the corresponding parts for self-replacement, reducing maintenance and operating costs.

Description

Technical Field

[0001] This utility model relates to the field of knob technology, and in particular to a knob that is easy to assemble. Background Technology

[0002] A knob is a component that allows the operator to control and adjust the functions of a device by rotating it; it is commonly used in microwave ovens.

[0003] The knobs commonly used in existing microwave ovens are usually made in one piece through injection molding and installed on the potentiometer on the control panel of the microwave oven. Since the knob is a frequently used component in microwave oven appliances, it is prone to damage after long-term use. When a microwave oven knob is damaged, the entire knob assembly usually needs to be removed from the microwave oven panel (potentiometer or encoder). This process is cumbersome, requires professional tools, and may even require a soldering iron. In view of this, this utility model proposes a knob that is easy to assemble. Utility Model Content

[0004] The purpose of this utility model is to provide a knob that is easy to assemble, so as to solve the problem mentioned in the background art that the existing knobs are usually installed as a whole on the microwave oven panel, which makes the repair and replacement of the knob cumbersome after it is damaged.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a knob that is easy to assemble, comprising a circular mounting hole on the top surface of a microwave oven control panel, and a knob mounting base fixedly connected inside the circular mounting hole: The knob mounting base is provided with a detachable connecting device inside. The connecting device includes a connecting cylinder located inside the knob mounting base. The connecting cylinder is provided with a plug-in, which is used to connect the cylinder and the knob mounting base to rotate synchronously. The outer wall of the connecting cylinder is provided with a blocking device, which is used to prevent the connecting cylinder from detaching from the knob mounting base in the longitudinal direction of the outer wall of the connecting cylinder. An inner cylinder is fixedly connected to the inside of the connecting cylinder. An insert rod is provided inside the inner cylinder. An elastic device for pushing the insert rod to move is provided inside the inner cylinder. The insert rod passes through the outer wall of the inner cylinder. A sleeve is fitted onto the outer wall of the inner cylinder. The outer wall of the sleeve has a through hole that matches the insertion rod. When the sleeve is fitted onto the outer wall of the inner cylinder, it can press the insertion piece into the inside of the knob mounting base. A knob cover is fixedly connected to the top of the sleeve. The bottom surface of the knob cover and the microwave oven control panel have a gap to accommodate the insertion rod.

[0006] Preferably, the blocking device includes a triangular baffle fixedly connected to the outer wall of the connecting cylinder. The top surface of the triangular baffle has a buffer groove for accommodating the tilting of the top of the triangular baffle. The inside of the knob mounting base has an annular groove for accommodating the triangular baffle. When the triangular baffle is installed in the annular groove, the top surface of the triangular baffle extends into the gap between the connecting cylinder and the knob mounting base.

[0007] Preferably, the connector includes an insert plate fixedly connected to the inner wall of the connecting cylinder, one end of the insert plate passing through the outer wall of the connecting cylinder and fixedly connected to a fan-shaped clamping plate, the top surface of the knob mounting base having a slot adapted to the fan-shaped clamping plate, and the end of the insert plate facing the inner wall of the connecting cylinder having a chamfer, so that when the sleeve is installed, the outer wall of the sleeve presses the insert plate outward.

[0008] Preferably, the elastic device includes a fixed plate fixedly connected to the inner wall of the inner cylinder, a telescopic rod fixedly connected to one side of the fixed plate, a movable plate located on the inner wall of the inner cylinder fixedly connected to one end of the telescopic rod, the outer wall of the movable plate fixedly connected to one end of the insertion rod, and a spring sleeved on the outer wall of the telescopic rod, with both ends of the spring fixedly connected to the movable plate and the fixed plate respectively.

[0009] Preferably, the outer wall of the inner cylinder is fixedly connected to four vertical plates arranged in a circumferential array along the outer wall of the inner cylinder, and the bottom end of the sleeve is provided with four slots that are adapted to the vertical plates.

[0010] Preferably, an anti-slip groove is provided along the outer wall of the knob cover.

[0011] The technical effects and advantages of this utility model are as follows: Compared with the traditional one-piece knob, this utility model allows for the replacement of each part of the knob when it is damaged, without the need for professional on-site repair. Users only need to purchase the corresponding parts to replace them themselves, thus reducing maintenance and usage costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the knob mounting position structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the power rod structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the connecting device structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the knob base structure of this utility model.

[0016] Figure 5 This is a schematic diagram of the elastic device structure of this utility model.

[0017] Figure 6 for Figure 3 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Microwave oven control panel; 2. Knob mounting base; 21. Circular groove; 22. Slot; 3. Connecting cylinder; 31. Inner cylinder; 32. Elastic device; 321. Fixing plate; 322. Moving plate; 323. Telescopic rod; 324. Spring; 33. Vertical plate; 34. Insert rod; 35. Insert plate; 36. Fan-shaped retaining plate; 37. Triangular baffle; 371. Buffer groove; 4. Sleeve; 41. Slot; 42. Through hole; 43. Knob cover. Detailed Implementation

[0019] 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 protection scope of the present utility model.

[0020] Example 1: In view of the problem that the existing microwave oven knobs are one-piece injection molded and installed on the microwave oven panel, and that after the knob is damaged, it needs to be removed from the encoder of the microwave oven panel, the whole repair process is cumbersome and increases the repair cost, this utility model proposes a button that is easy to assemble to solve the above problems. refer to Figure 1-6 It is understood that when assembling this utility model, the connecting device is first installed. After the knob mounting base 2 is fixedly installed on the encoder of the microwave oven control panel 1, the plug-in is first inserted into the outer wall of the connecting cylinder 3. At the same time, the fan-shaped card plate 36 in the plug-in is aligned longitudinally with the slot 22. At this time, the connecting cylinder 3 is pressed so that the blocking device is recessed in the annular groove 21, and the plug-in is placed in the slot 22. Next, install the sleeve 4. When installing, align the through hole 42 with the position of the 34 insert rod, the four vertical plates 33 and the slot 41. Then press the knob cover 43. Before pressing, use the pin to push the insert rod 34 to retract into the inner wall of the inner cylinder 31. After pressing, the bottom end of the sleeve 4 will first squeeze the insert plate 35 to move outward. The insert plate 35 will push the fan-shaped card plate 36 to move into the slot 22. When the connecting cylinder 3 rotates, it will drive the knob mounting base 2 to rotate synchronously. In addition, the elastic device 32 pushes the insertion rod 34 into the through hole 42. At this time, the sleeve 4 can be fixed on the connecting cylinder 3. When the sleeve 4 rotates, the slot 41 can drive the vertical plate 33 to rotate, so as to avoid the rotation force of the sleeve 4 being entirely applied to the insertion rod 34, thus reducing the service life of the insertion rod 34. When the knob is damaged, the same principle applies. First, push the insert 34 through the gap between the bottom surface of the knob cover 43 and the microwave oven control panel 1 to retract it into the inner wall of the inner cylinder 31. At this time, lift the sleeve 4 to separate the sleeve 4 from the connecting cylinder 3. When the connecting cylinder 3 needs to be disassembled, the top surface of the triangular baffle 37 is pushed by the chuck to deform the top surface of the triangular baffle 37 by squeezing the buffer groove 371, thereby causing the top of the triangular baffle 37 to tilt. The side of the top of the triangular baffle 37 is close to the inner wall of the knob mounting seat 2. At this time, the connecting cylinder 3 can be lifted out of the knob mounting seat 2 for replacement. Compared to traditional one-piece knobs, this invention allows for the disassembly of the knob's various parts. This means that when the knob is damaged, each part can be replaced individually, eliminating the need for professional on-site repair. Users can simply purchase the corresponding parts to perform the replacement themselves, thus reducing maintenance costs.

[0021] Example 2, reference Figure 3 , Figure 4 and Figure 6 The elastic device 32 of Embodiment 1 includes a fixing plate 321 fixed to the inner wall of the inner cylinder 31. When the insertion rod 34 is compressed and contracted to the inner wall of the inner cylinder 31 by the chuck, the spring 324 retracts, and at the same time the telescopic rod 323 retracts to prevent the spring 324 from deforming. After the chuck is removed, the spring 324 returns to its original state and pushes the moving plate 322 to move. The moving plate 322 pushes the insertion rod 34 to move until the insertion rod 34 is inserted into the through hole 42, which can fix the sleeve 4. The sleeve 4 is detachable, which facilitates the replacement of the sleeve 4. After the sleeve 4 is removed, the connecting device can be exposed for maintenance and replacement.

[0022] Example 3, reference Figure 1 It is understandable that the surface of the knob cover 43 has anti-slip grooves. The primary purpose is to prevent slipping when turning the knob cover 43 with wet hands, or to prevent the operator from subconsciously using too much force when their hands are wet, which could cause the knob to be too large. At the same time, the anti-slip grooves are aesthetically pleasing and add a sense of layering and texture.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A knob that is easy to assemble, comprising a circular mounting hole on the top surface of a microwave oven control panel (1) and a knob mounting base (2) fixedly connected inside the circular mounting hole, characterized in that: The knob mounting base (2) is provided with a detachable connecting device inside. The connecting device includes a connecting cylinder (3) located inside the knob mounting base (2). The connecting cylinder (3) is provided with a plug-in, which is used to connect the cylinder (3) and the knob mounting base (2) to rotate synchronously. The outer wall of the connecting cylinder (3) is provided with a blocking device, which is used to prevent the connecting cylinder (3) from detaching from the knob mounting base (2) in the longitudinal direction of the outer wall of the connecting cylinder (3). The inner cylinder (31) is fixedly connected to the inside of the connecting cylinder (3). The inner cylinder (31) is provided with a rod (34) inside. The inner cylinder (31) is provided with a push rod (34) moving elastic device (32) inside. The rod (34) passes through to the outer wall of the inner cylinder (31). The outer wall of the inner cylinder (31) is fitted with a sleeve (4). The outer wall of the sleeve (4) is provided with a through hole (42) that matches the insertion rod (34). When the sleeve (4) is fitted onto the outer wall of the inner cylinder (31), it can squeeze the insertion piece into the inside of the knob mounting base (2). The top of the sleeve (4) is fixedly connected to a knob cover (43). The bottom surface of the knob cover (43) and the microwave oven control panel (1) are provided with a gap to accommodate the insertion rod (34).

2. The easy-to-assemble knob according to claim 1, characterized in that: The blocking device includes a triangular baffle (37) fixedly connected to the outer wall of the connecting cylinder (3). A buffer groove (371) is provided on the top surface of the triangular baffle (37). The buffer groove (371) is used to accommodate the top of the triangular baffle (37) to tilt. An annular groove (21) is provided inside the knob mounting base (2) to accommodate the triangular baffle (37). When the triangular baffle (37) is installed in the annular groove (21), the top surface of the triangular baffle (37) extends into the gap between the connecting cylinder (3) and the knob mounting base (2).

3. The easy-to-assemble knob according to claim 1, characterized in that: The connector includes a plate (35) fixedly connected to the inner wall of the connecting cylinder (3). One end of the plate (35) passes through the outer wall of the connecting cylinder (3) and is fixedly connected to a fan-shaped card plate (36). The top surface of the knob mounting base (2) is provided with a slot (22) that matches the fan-shaped card plate (36). The end of the plate (35) facing the inner wall of the connecting cylinder (3) is chamfered, so that when the sleeve (4) is installed, the outer wall of the sleeve (4) presses the plate (35) outward.

4. The easy-to-assemble knob according to claim 1, characterized in that: The elastic device (32) includes a fixed plate (321) fixedly connected to the inner wall of the inner cylinder (31), a telescopic rod (323) fixedly connected to one side of the fixed plate (321), a movable plate (322) located on the inner wall of the inner cylinder (31) fixedly connected to one end of the telescopic rod (323), the outer wall of the movable plate (322) fixedly connected to one end of the insertion rod (34), and a spring (324) sleeved on the outer wall of the telescopic rod (323), the two ends of the spring (324) being fixedly connected to the movable plate (322) and the fixed plate (321) respectively.

5. A knob for easy assembly according to claim 1, characterized in that: The outer wall of the inner cylinder (31) is fixedly connected to four vertical plates (33) arranged in a circumferential array along the outer wall of the inner cylinder (31), and the bottom end of the sleeve (4) is provided with four slots (41) that are adapted to the vertical plates (33).

6. A knob for easy assembly according to claim 1, characterized in that: Anti-slip grooves are provided along the outer wall of the knob cover (43).

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