Device and method for mounting a sensor and for sealing a cabinet

1. A device for mounting a sensor configured to sense when a door is closed, wherein the sensor includes a housing, a mounting hole in the housing, and the sensor including a sensing contact that extends through an opening defined in the housing, the sensing contact being movable relative to the housing as the door contacts the sensing contact, the device comprising:

a bracket configured to support the sensor and formed with a guide hole therein, wherein an opening is formed in the bracket, wherein the opening is opened at a side edge of the bracket, and wherein at least a portion of the housing of the sensor is received in the opening of the bracket;

a support rod passing through the mounting hole in the housing of the sensor and the guide hole in the bracket; and

an elastic element disposed on the support rod, wherein the support rod is attached to both the housing of the sensor and the bracket, the housing of the sensor being adapted to move within the opening of the bracket along the support rod against the elastic element.

2. The device according to claim 1 , wherein the elastic element is configured that:

(i) the elastic element exerts an initial deformation force F0 on the sensor when there is no an external action force F1 exerted on the sensor, the initial deformation force F0 is set to be slightly larger than a first external action force F1′ under which the sensing contact of the sensor is moved to a position flush with the housing and less than a maximum external action force Fmax allowed to be exerted on the sensor; and

(ii) the initial deformation force F0 is exerted on the sensor in a direction opposite to a direction in which the external action force F1 is exerted on the sensor, wherein when the external action force F1 exerted on the sensor is less than or equal to the initial deformation force F0, the housing of the sensor is not moved, and the elastic element is not moved and deformed by the housing; and

wherein when the external action force F1 exerted on the sensor is increased to be larger than the initial deformation force F0, the housing of the sensor begins to be moved against the elastic element, and a portion of the external action force F1 beyond the initial deformation force F0 is converted into a deformation force of the elastic element to ensure that the sensor works normally under an overlarge external action force or an overlarge external action displacement.

3. The device according to claim 1 , wherein the device comprises a plurality of support rods, and the plurality of support rods pass through respective mounting holes in the housing and respective guide holes in the bracket.

4. The device according to claim 3 , wherein the support rod has a first end and a second end opposite to the first end; and

wherein the first end of the support rod is positioned at one of the sensor and the bracket, and the second end of the support rod is positioned at the other of the sensor and the bracket.

5. The device according to claim 4 , wherein a radial slot is formed in the first end of the support rod, and a stop piece is provided in the radial slot to position the first end of the support rod at one of the sensor and the bracket; and

wherein a radial protrusion portion is formed on the second end of the support rod to position the second end of the support rod at the other of the sensor and the bracket.

6. The device according to claim 1 , wherein the opening has a substantially U-shape.

7. The device according to claim 6 , wherein two elastic elements are disposed at both sides of the support rod relative to the bracket, respectively.

8. The device according to claim 7 , wherein the bracket further comprises:

a first portion on which the sensor is mounted; and

a second portion perpendicular to the first portion and fixed to a stationary body.

9. The device according to claim 8 , wherein the bracket is formed by folding a strip of plate; and

wherein the first portion is configured to be a rectangle frame formed by folding the strip of plate.

10. The device according to claim 6 , wherein one elastic element is disposed at only one side of the support rod relative to the bracket.

11. The device according to claim 1 , wherein the bracket further comprises:

a first wall on which the sensor is mounted;

a second wall perpendicular to the first wall and fixed to a stationary body; and

a third wall connected between the first and second walls so that the bracket has a triangular shape.

12. The device according to claim 1 , wherein the bracket is made by molding or machining.

13. The device according to claim 1 , wherein the sensor is configured to be a contact sensor.

14. The device according to claim 1 , wherein the sensor is configured to be a micro electromechanical sensor or a fiber optic sensor.