A knob device to prevent falling off

Abstract

The present invention discloses an anti-falling knob device, which comprises a housing, a knob and a circuit board, wherein the knob is embedded in the housing, and a notch is provided on the side wall of the housing, and the side of the knob is exposed in the notch; the circuit board is fixedly connected to the inner side of the housing, and the bottom of the knob is connected to the switch on the circuit board; the lower part of the knob has a ring edge, a frame is fixed inside the housing, and a limiting groove is provided on the frame, the opening of the limiting groove is placed on the side and faces the ring edge, and the ring edge extends into the limiting groove and can rotate freely in the limiting groove. The present invention adds a ring edge to the inner side of the knob, the ring edge is limited in the limiting groove of the frame inside the housing, and the ring edge keeps free movement during the rotation of the knob, and will not interfere with the limiting groove. When the user wants to pull the knob outward, the limiting groove can clamp the knob on the housing, effectively preventing the knob from falling off. The present invention has a simple structure and is easy to implement.

Description

Technical Field

[0001] The invention belongs to the field of knobs, and in particular relates to an anti-falling knob device. Background Art

[0002] Due to styling requirements, the knob needs to be exposed to facilitate users to slide directly on the side. Due to assembly limit issues, the knob cannot be assembled from the inside and needs to be installed from the outside, resulting in the problem of it being pulled apart and falling off. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides an anti-falling knob device.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A knob device for preventing falling off comprises a shell, a knob and a circuit board, wherein the knob is embedded in the shell, and a notch is provided on the side wall of the shell, and the side of the knob is exposed in the notch; the circuit board is fixedly connected to the inner side of the shell, and the bottom of the knob is connected to the switch on the circuit board; the device is characterized in that: the lower part of the knob has a ring edge, a frame is fixed inside the shell, a limiting groove is provided on the frame, the opening of the limiting groove is placed on the side and faces the ring edge, and the ring edge extends into the limiting groove and can rotate freely in the limiting groove.

[0006] Furthermore, a limiting plate is provided on the inner side of the shell, and the limiting plate is placed on the upper part of the ring edge to limit the movement of the ring edge toward the outside of the shell.

[0007] Furthermore, a plug-in board is provided at the bottom of the limiting piece, and the plug-in board is plugged into a plug-in hole on the circuit board.

[0008] Furthermore, the limiting groove is integrally formed with the frame, and the limiting groove is located at the notch of the side wall of the shell.

[0009] The present invention adopts the above technical solution, and adds a ring edge on the inner side of the knob. The ring edge is limited in the limiting groove of the inner frame of the shell, and the ring edge maintains free movement during the rotation of the knob and will not interfere with the limiting groove. When the user wants to pull the knob outward, the limiting groove can clamp the knob on the shell, effectively preventing the knob from falling off. The present invention has a simple structure and is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments;

[0011] Figure 1 A schematic diagram of the present invention combined together;

[0012] Figure 2 An exploded view of the present invention;

[0013] Figure 3 It is a cross-sectional view of the present invention. DETAILED DESCRIPTION

[0014] like Figure 1-3 As shown in one of the figures, the present invention provides an anti-falling knob device, comprising a shell 1, a knob 2 and a circuit board 5, wherein the knob 2 is embedded in the shell 1, and a notch 11 is provided on the side wall of the shell 1, and the side of the knob 2 is exposed from the notch 11; the circuit board 5 is fixedly connected to the inner side of the shell 1, and the bottom of the knob 2 is connected to a switch 51 on the circuit board 5; the lower part of the knob 2 has a ring edge 21, a frame body 3 is fixed inside the shell 1, and a limiting groove 31 is provided on the frame body 3, the opening of the limiting groove 31 is placed on the side and faces the ring edge 21, and the ring edge 21 extends into the limiting groove 31 and can rotate freely in the limiting groove 31.

[0015] In order to further improve the anti-falling ability of the knob 2, a limit plate 4 is further provided on the inner side of the housing 1, and the limit plate 4 is placed on the upper part of the ring edge 21 to limit the movement of the ring edge 21 to the outside of the housing 1. Furthermore, the bottom of the limit plate 4 has a plug-in board, which is plugged into the plug hole on the circuit board 5.

[0016] Preferably, the limiting groove 31 is integrally formed with the frame 3 , and the limiting groove 31 is located at the notch 11 of the side wall of the shell 1 .

[0017] The present invention adds a ring edge 21 on the inner side of the knob 2, and the ring edge 21 is limited in the limiting groove 31 of the internal frame 3 of the shell 1. During the rotation of the knob 2, the ring edge 21 maintains free movement and does not interfere with the limiting groove 31. When the user wants to pull the knob 2 outward, the limiting groove 31 can clamp the knob 2 on the shell 1, effectively preventing the knob 2 from falling off. The present invention has a simple structure and is easy to implement.

[0018] The implementation of the present invention is described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes. The above-mentioned specific implementation modes are illustrative rather than limiting the present invention. Those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. An anti-drop knob device, comprising a housing, a knob and a circuit board, wherein the knob is embedded in the housing, and a notch is provided on the side wall of the housing, and the side of the knob is exposed in the notch; the circuit board is fixedly connected to the inner side of the housing, and the bottom of the knob is connected to a switch on the circuit board; characterized in that: The lower part of the knob has a ring edge, a frame is fixed inside the shell, a limiting groove is provided on the frame, the opening of the limiting groove is located on the side and faces the ring edge, the ring edge extends into the limiting groove and can rotate freely in the limiting groove; a limiting plate is also provided on the inner side of the shell, the limiting plate is placed on the upper part of the ring edge to limit the movement of the ring edge to the outside of the shell; the limiting groove is integrally formed with the frame, and the limiting groove is located at the notch of the side wall of the shell.

2. The anti-falling knob device according to claim 1, characterized in that: The bottom of the limiting piece is provided with a plug-in board, which is plugged into a plug-in hole on the circuit board.

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