Knob fixing device

Abstract

The utility model relates to the technical field of knob fixing, in particular to a knob fixing device which comprises a shell and a knob, a switch shaft elastic frame and a knob switch which are matched with each other are arranged on the shell, the knob is installed on the shell through the switch shaft elastic frame and the knob switch, a tongue piece hole is formed in the knob, and the tongue piece hole is connected with the knob. The shell is provided with an elastic flat gasket and a nut which are used for fixing the knob switch, the switch elastic frame comprises a supporting piece, an elastic top piece and a tongue piece, and the knob switch comprises a top piece groove formed in the top end of a shaft part. According to the utility model, the defects of high operation difficulty and process complexity of the traditional method are overcome, all parts only need to be sequentially mounted in sequence, the operation is flexible and convenient, and special equipment is not needed; the whole assembly process is simple, the practicability and the operation convenience are better than those of a traditional method, fixation is stable and reliable, and loosening or falling cannot occur in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of knob fixing, in particular to a knob fixing device. Background Art

[0002] Traditional knob fixing methods generally involve drilling screw holes in the knob. For example, a knob fixing device disclosed in the patent with the publication number CN208092584U adopts a method of contacting and fitting the knob with the housing, making the knob not easy to shake and remain stable. By assembling balls between the fitting surfaces of the knob and the housing, the problem of frictional force during rotation is solved, so that the knob can remain stable and smooth when rotated by an external force, which is beneficial for the screw to lock the knob to the knob switch. However, the appearance presents a screw structure, which affects the overall aesthetics and has a complex process. Or the knob is press-fitted and fixed by an interference fit between the knob and the knob switch shaft, which requires a press-fitting device and professional personnel for the press-fitting operation, making the manufacturing process of the knob difficult and the operation difficult. Content of the Utility Model

[0003] The purpose of the utility model is to solve the problem that it is difficult to install the knob conveniently and stably in the prior art, and a knob fixing device is proposed.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A knob fixing device includes a housing and a knob. A switch shaft elastic bracket and a knob switch are arranged on the housing in a matching manner, and the knob is installed on the housing through the switch shaft elastic bracket and the knob switch.

[0006] Preferably, a tongue hole is opened in the knob.

[0007] Preferably, a spring flat washer and a nut for fixing the knob switch are arranged on the housing.

[0008] Preferably, the switch elastic bracket includes a support piece, an elastic top piece and a tongue piece.

[0009] Preferably, the knob switch includes a top piece groove opened at the top of the shaft part.

[0010] Preferably, the tongue hole corresponds to the tongue piece.

[0011] Preferably, the elastic top piece corresponds to the top piece groove.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model overcomes the large operation difficulty and process complexity of the traditional method. It only needs to install each component in sequence, and the operation is flexible and convenient without special equipment.

[0014] 2. The overall assembly process of the present utility model is simple, and it is more superior to the traditional method in terms of practicability and operation convenience. Moreover, the fixation is stable and reliable, and it will not loosen or fall off during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic structural diagram of a knob fixing device proposed by the present utility model;

[0016] Figure 2 FIG. is an exploded view of a knob, a switch shaft elastic bracket and a knob switch of a knob fixing device proposed by the present utility model;

[0017] Figure 3 FIG. is a cross-sectional view of a knob fixing device proposed by the present utility model;

[0018] Figure 4 FIG. is an assembly schematic diagram of a knob fixing device proposed by the present utility model.

[0019] In the figure: 1. Knob; 1-1. Tongue hole; 2. Switch shaft elastic bracket; 2-1. Support piece; 2-2. Elastic top piece; 2-3. Tongue piece; 3. Knob switch; 3-1. Top piece groove; 4. Housing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] Refer to Figures 1 - 4 , a knob fixing device, including a housing 4 and a knob 1. The end face of the housing 4 for installing the knob 1 is flat, so as to ensure the stable installation of the flat gasket. The knob 1 adopts a boss structure, and vertical lines are provided on the surface of the knob 1 to increase the friction during the manual rotation of the knob 1 and avoid slipping.

[0022] A switch shaft elastic bracket 2 and a knob switch 3 are provided on the housing 4 in a matching manner. The knob 1 is installed on the housing 4 through the switch shaft elastic bracket 2 and the knob switch 3. By fixedly connecting the switch shaft elastic bracket 2 to the knob 1, fixedly connecting the knob switch 3 to the housing 4, and then connecting the switch shaft elastic bracket 2 and the knob switch 3 by a buckle, the fixed installation of the knob 1 on the housing 4 can be realized.

[0023] Specifically refer to the attached drawings of the specification Figure 2 , and further illustrate:

[0024] First, a tongue hole 1-1 is provided in the knob 1. The tongue hole 1-1 is provided at the outer wall position of the knob 1 to be adaptively installed with the tongue piece 2-3.

[0025] Second, a spring washer and a nut for fixing the rotary switch 3 are provided on the housing 4. For details, refer to the appended Figure 1 description to ensure the fixed installation of the rotary switch 3 on the housing 4.

[0026] Third, the switch elastic bracket 2 includes a supporting piece 2-1, an elastic top piece 2-2 and a tongue piece 2-3. The supporting piece 2-1 is a circular tube structure with an opening on one side. The elastic top piece 2-2 is fixedly welded to the side of the supporting piece 2-1 without the opening. The tongue piece 2-3 has a metal spring piece structure, and the tongue piece 2-3 is sleeved on the supporting piece 2-1 through the elastic top piece 2-2.

[0027] Fourth, the rotary switch 3 includes a top piece groove 3-1 opened at the top of the shaft part. The top piece groove 3-1 is a flat groove structure, and the elastic top piece 2-2 is embedded in the top piece groove 3-1.

[0028] For details, refer to the appended Figure 3 description for further illustration:

[0029] The tongue piece hole 1-1 corresponds to the tongue piece 2-3, and the tongue piece 2-3 can be fixed by using the tongue piece hole 1-1.

[0030] The elastic top piece 2-2 corresponds to the top piece groove 3-1, and the elastic top piece 2-2 is fixed by using the top piece groove 3-1.

[0031] It should be noted that the specific model specifications of the knob 1 and the housing 4 need to be selected according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0032] The functional principle of the present utility model can be described through the following operation method:

[0033] The switch shaft elastic bracket 2 is sleeved on the shaft of the rotary switch 3, and the elastic top piece 2-2 is clamped in the top piece groove 3-1 at the shaft part of the rotary switch 3;

[0034] After installation, the supporting piece 2-1 of the switch shaft elastic bracket 2 naturally lies flat on the top of the shaft of the rotary switch 3;

[0035] The knob 1 is installed on the rotary switch 3, and the tongue piece 2-3 of the switch shaft elastic bracket 2 naturally falls into the tongue piece hole 1-1 of the knob 1.

[0036] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A knob fixing device, comprising a housing (4) and a knob (1), characterized in that, A switch shaft elastic bracket (2) and a knob switch (3) which are adapted to each other are arranged on the housing (4), and the knob (1) is installed on the housing (4) through the switch shaft elastic bracket (2) and the knob switch (3).

2. The knob fixing device according to claim 1, characterized in that, A tongue hole (1-1) is formed in the knob (1).

3. A knob fixing device according to claim 1, characterized in that, A spring flat washer and a nut for fixing the knob switch (3) are arranged on the housing (4).

4. A knob fixing device according to claim 2, characterized in that, The switch elastic bracket (2) includes a support piece (2-1), an elastic top piece (2-2) and a tongue piece (2-3).

5. The knob fixing device according to claim 4, characterized in that, The knob switch (3) includes a top piece groove (3-1) formed at the top end of the shaft portion.

6. The knob fixing device according to claim 4, characterized in that, The tongue hole (1-1) corresponds to the tongue piece (2-3).

7. A knob fixing device according to claim 5, characterized in that, The elastic top piece (2-2) corresponds to the top piece groove (3-1).

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