An automatic reset guard

Abstract

This utility model provides an automatic reset protective device, including a base and a protective cover. The base has a through hole, and the protective cover covers the edge of the through hole. The protective cover has a support part that passes through the through hole and is rotatably connected to the base. A torsion spring is also provided, with its two torsion arms abutting against the surfaces of the support part and the base, forming an angle, respectively, enabling the protective cover to close automatically. The protective cover is divided into a small split cover and a large split cover. The small split cover is fixed to the edge of the through hole in the base, and the large split cover rotates relative to the base via the support part. A magnet or magnetic metal is installed on the surface of the large split cover. The external magnetic force of the magnet or magnetic metal overcomes the torsion force of the torsion spring, opening the large split cover. No separate protective cover handle is required, and the device design is simple and aesthetically pleasing.

Description

Technical Field

[0001] This utility model belongs to the field of train equipment manufacturing technology, specifically relating to an automatic reset type protective device. Background Technology

[0002] In public places such as trains, there is a need for oxygen supply to people. Oxygen is typically supplied via fixed oxygen outlet pipes installed on tables, walls, or seats. When oxygen is needed, the connector of the oxygen mask hose is connected to the outlet pipe. After supplying oxygen, the connector is disconnected. However, these outlet pipes are easily damaged due to prolonged exposure. As special-purpose devices, these pipes require dedicated personnel for management. One existing protective device uses a cover with a hidden metal plate that requires a magnet to open. After removing the magnet, the cover returns to its original position by gravity and closes magnetically with the metal plate. However, this design lacks a fixed position when the cover is open, making it prone to colliding with surrounding components during train travel, causing noise or damage. Therefore, designing a protective device suitable for mobile environments is a pressing issue. Utility Model Content

[0003] The purpose of this invention is to provide an automatic reset type protection device to solve the problems in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An automatic reset type protective device includes a base and a protective cover. The base has a base through hole, the protective cover covers the edge of the base through hole, the protective cover has a support part, the support part passes through the base through hole and is rotatably connected to the base, and a torsion spring is also provided. The two torsion arms of the torsion spring abut against the surface of the support part and the surface of the base, which form an angle, respectively.

[0006] Furthermore, the support part is provided with a pivot, or the base is provided with a pivot, and the support part and the base are connected in a rotatable manner through the pivot.

[0007] Furthermore, there are two rotating axes, which are symmetrically distributed.

[0008] Furthermore, there are two torsion springs, which are respectively fitted onto two rotating shafts.

[0009] Furthermore, the protective cover is divided into a small split cover and a large split cover. The small split cover is fixed on the edge of the through hole in the base, while the large split cover rotates relative to the base through the support.

[0010] Furthermore, magnets or magnetic metals are installed on the surface of the large split cover.

[0011] Furthermore, a rear end cover is provided, which is installed on the base at the end opposite to the protective cover.

[0012] Furthermore, the rear end cover has an end cover through hole, which is connected to the base through hole.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0014] (1) A support is provided on the protective cover. The support passes through the through hole of the base and is connected to the base in a rotating manner. The torsion spring will abut the surface of the support and the surface of the base at an angle, which can keep the protective cover closed and avoid noise caused by collision.

[0015] (2) The protective cover is divided into a small split cover and a large split cover. The small split cover is fixed on the edge of the through hole of the base. The large split cover rotates relative to the base through the support part. The surface of the large split cover is equipped with a magnet or magnetic metal. The large split cover can be picked up and opened by the external magnet or magnetic metal. There is no need to set a separate protective cover handle. The device design is simple and beautiful. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of the automatic reset type protective device provided in pairs according to a preferred embodiment of this utility model;

[0017] Figure 2 A schematic diagram of a single integral structure of the automatic reset protective device provided in a preferred embodiment of this utility model;

[0018] Figure 3 A schematic diagram of the rear end cover structure of the automatic reset protective device provided in a preferred embodiment of this utility model;

[0019] Figure 4 A schematic diagram of the torsion spring mounting structure of the automatic reset protective device provided in a preferred embodiment of this utility model;

[0020] Figure 5 A schematic diagram of another torsion spring mounting structure of the automatic reset protective device provided in a preferred embodiment of this utility model.

[0021] In the diagram: 1-base, 2-protective cover, 3-base through hole, 4-rear end cover, 5-torsion spring, 6-rotating shaft, 7-rotating shaft sleeve, 21-large split cover, 22-small split cover, 23-magnet or magnetic metal, 24-support part, 41-end cover through hole. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0023] Example

[0024] Please see Figure 1 and Figure 2 This embodiment provides an automatic reset protective device, including a base 1 and a protective cover 2. The base 1 is mounted on a table or wall and has a base through hole 3. The protective cover 2 covers the edge of the base through hole 3. In this embodiment, the protective cover 2 is circular, and its size is larger than the circumference of the base through hole 3. The protective cover 2 has a support part 24, which passes through the base through hole 3 and is rotatably connected to the base 1.

[0025] The protective cover 2 is divided into a small split cover 22 and a large split cover 21. The small split cover 22 is fixed to the edge of the through hole 3 in the base, and the large split cover 21 rotates relative to the base 1 via the support part 24. A magnet or magnetic metal 23 is mounted on the surface of the large split cover 21. Here, the magnetic metal includes iron-nickel and cobalt, etc. The magnet or magnetic metal 23 is made into a disc and attached to the surface of the large split cover 21 that contacts the through hole 3 in the base. In this embodiment, an iron sheet is mounted on the surface of the large split cover 21.

[0026] Please see Figure 3 The automatic reset protective device provided in this embodiment is also provided with a rear end cover 4, which is installed on the base 1 at the end opposite to the protective cover 2. The rear end cover 4 is fixed to the base 1 with screws, and the rear end cover 4 is provided with an end cover through hole 41, which communicates with the base through hole 3.

[0027] Please see Figure 4 and Figure 5 The automatic reset protective device provided in this embodiment is also equipped with a torsion spring 5. The two torsion arms of the torsion spring 5 abut against the surfaces of the support part 24 and the base 1, which form an angle, respectively. That is, the elastic force of the torsion spring 5 will open the surfaces of the support part 24 and the base 1, so that the large split cover 21 connected to the support part 24 closes on the edge of the through hole 3 of the base. In use, the external magnetic force that generates magnetism with the magnet or magnetic metal 23 can overcome the torsion force of the torsion spring 5 and open the large split cover.

[0028] Furthermore, the support portion 24 is provided with a rotating shaft 6, or the base 1 is provided with a rotating shaft 6, and the support portion 24 and the base 1 are rotatably connected via the rotating shaft 6. In this embodiment, the rotating shaft 6 is disposed on the support portion 24, and a rotating shaft sleeve 7 for fixing the rotating shaft 6 is fixedly installed on the base 1. Here, the rotating shaft sleeve 7 is fixedly installed on the base 1 by screws. There are two rotating shafts 6, which are symmetrically distributed. There are also two torsion springs 5, which are respectively sleeved on the two rotating shafts 6.

[0029] Working principle:

[0030] When the protective cover 2 is opened, a magnet bar matching this automatic reset protective device is close to the surface of the large split cover 21. The magnet bar attracts the large split cover 21 away from the base through hole 3 by the magnetic force on the iron sheet, so that the large split cover 21 rotates relative to the base 1 through the support portion 24, and the base through hole 3 is exposed. An external device to be used is inserted into the base through hole 3, and when the large split cover 21 is in the open state, it is lapped on the device. After the device is removed from the base through hole 3, the large split cover 21 rotates relative to the base 1 through the support portion 24 under the pulling force of the torsion spring 5 to be reset and re-covers the edge of the base through hole 3. The device connected inside this automatic reset protective device passes through the end cover through hole 41 and the base through hole 3 and is connected to an external device.

[0031] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An automatic reset type protective device, comprising a base and a protective cover, wherein the base has a base through hole, and the protective cover covers the edge of the base through hole, characterized in that, The protective cover is provided with a support part, which passes through the base through hole and is rotatably connected to the base. It is also provided with a torsion spring, and the two torsion arms of the torsion spring abut against the surface of the support part and the surface of the base, which form an angle.

2. The automatic reset type protective device according to claim 1, characterized in that, The support part is provided with a rotating shaft, or the base is provided with a rotating shaft, and the support part and the base are rotatably connected through the rotating shaft.

3. The automatic reset type protective device according to claim 2, characterized in that, There are two rotating shafts, which are symmetrically distributed.

4. The automatic reset protective device according to claim 1 or 3, characterized in that, There are two torsion springs, which are respectively sleeved on two rotating shafts.

5. The automatic reset type protective device according to claim 1, characterized in that, The protective cover is divided into a small split cover and a large split cover. The small split cover is fixed on the edge of the through hole in the base, and the large split cover rotates relative to the base through the support.

6. The automatic reset type protective device according to claim 5, characterized in that, The surface of the large split cover is fitted with magnets or magnetic metal.

7. The automatic reset type protective device according to claim 1, characterized in that, It is also provided with a rear end cover, which is installed on the base at the end opposite to the protective cover.

8. The automatic reset type protective device according to claim 7, characterized in that, The rear end cover has an end cover through hole, which communicates with the base through hole.

Images