A retractable sensor fixing and sensing device

Abstract

The present invention discloses a retractable sensor fixing and sensing device, comprising a base, a bottom plate, a limit nut, a telescopic rod, a sensor and a sensing plate; the base is a hollow structure, the lower end of the base is fixed to the bottom plate, the limit nut is sleeved on the upper end of the base, and the upper end of the telescopic rod passes through the bottom plate, the base and the limit nut in sequence; a first spring, a shaft sleeve and a second spring are sleeved on the telescopic rod from top to bottom in sequence, wherein the first spring, the second spring and the shaft sleeve are all located in the base; the sensor is fixed on the outer wall of the base, an elongated through hole is opened axially on the side wall of the base, the end of the sensing plate is connected to the shaft sleeve through a connecting piece, wherein the connecting piece passes through the elongated through hole, and the sensor is located directly above the sensing plate. The device can effectively improve the stability and reliability of the sensor.

Description

Technical Field

[0001] The invention belongs to the technical field of sensor installation and fixing, and relates to a retractable sensor fixing and sensing device. Background Art

[0002] Currently, proximity sensors are widely used in industrial control systems. These sensors are typically fixed to the object being detected, and the movement of the object drives the sensor closer to or further away from the object to achieve control. However, due to issues such as installation accuracy, sensing distance, and the object's motion, sensor signals can deviate. Direct contact between the sensor and the object can even damage the sensor. This cumbersome process requires regular manual inspections to ensure the initial distance between the sensor and the object is within acceptable limits, reducing sensor stability. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a retractable sensor fixing and sensing device, which can effectively improve the stability and reliability of the sensor.

[0004] To achieve the above-mentioned purpose, the retractable sensor fixing and sensing device of the present invention comprises a base, a bottom plate, a limit nut, a telescopic rod, a sensor and a sensing plate;

[0005] The base is a hollow structure, the lower end of the base is fixed to the bottom plate, the limit nut is sleeved on the upper end of the base, and the upper end of the telescopic rod passes through the bottom plate, the base and the limit nut in sequence;

[0006] The telescopic rod is sleeved with a first spring, a shaft sleeve and a second spring in sequence from top to bottom, wherein the first spring, the second spring and the shaft sleeve are all located in the base;

[0007] The sensor is fixed on the outer wall of the base. A long strip through hole is opened axially on the side wall of the base. The end of the sensing plate is connected to the shaft sleeve through a connecting piece, wherein the connecting piece passes through the long strip through hole, and the sensor is located directly above the sensing plate.

[0008] The telescopic rod includes an upper shaft section, a lower shaft section and a disc. The lower end of the lower shaft section is connected to the disc. The upper end of the lower shaft section passes through the bottom plate and is inserted into the base and then connected to the lower end of the upper shaft section. The upper end of the upper shaft section extends out of the base and passes through a limiting nut. The first spring, the shaft sleeve and the second spring are all sleeved on the upper shaft section. The lower end of the second spring is limited by the upper end surface of the lower shaft section, the upper end of the second spring is limited by the lower end of the shaft sleeve, the lower end of the first spring is limited by the shaft sleeve, and the upper end of the first spring is limited by the limiting nut.

[0009] It also includes a fixing plate and two first adjusting nuts, wherein one side of the fixing plate and the two first adjusting nuts are sleeved on the base, and the fixing plate is located between the two first adjusting nuts, and the sensor is fixed on the other side of the fixing plate.

[0010] The upper end of the telescopic rod is sleeved with a second adjusting nut.

[0011] The base is fixed to the bottom plate by bolts.

[0012] The connecting parts are bolts.

[0013] The fixing plate is provided with a mounting hole, and the sensor is mounted in the mounting hole.

[0014] The present invention has the following beneficial effects:

[0015] During specific operation of the retractable sensor fixing and sensing device described in the present invention, the base plate is fixed on the object to be detected and moves synchronously with the object. When the disc is separated from the sensing object, the first spring and the second spring are in the initial state, a certain distance is maintained between the disc and the base plate, and a certain distance is maintained between the sensing plate and the sensor, and the sensor is not sensed. After the disc contacts the sensing object, the telescopic rod continues to move upward until it contacts the base plate, and the second spring is compressed. The buffering force of the second spring prevents the sensing plate from directly squeezing and damaging the sensor, thereby ensuring the stability and reliability of the sensor and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the present invention;

[0017] Figure 2 It is a left side view of the present invention;

[0018] Figure 3 A top view of the present invention;

[0019] Figure 4 Schematic diagram of the telescopic rod 06 in the present invention;

[0020] Figure 5 It is a working state diagram of the present invention;

[0021] Figure 6 Schematic diagram of the induction plate 11 in contact with the sensor 09.

[0022] Among them, 01 is the limit nut, 02 is the base, 03 is the first adjusting nut, 04 is the first spring, 05 is the sleeve, 06 is the telescopic rod, 07 is the second spring, 08 is the second adjusting nut, 09 is the sensor, 10 is the fixing plate, 11 is the sensing plate, 12 is the bottom plate, 0601 is the upper shaft section, 0602 is the lower shaft section, and 0603 is the disc. DETAILED DESCRIPTION

[0023] The present invention is described in further detail below with reference to the accompanying drawings:

[0024] refer to Figures 1 to 6 The retractable sensor fixing and sensing device described in the present invention includes a base 02, a bottom plate 12, a limiting nut 01, a telescopic rod 06, a sensor 09 and a sensing plate 11; the base 02 is a hollow structure, the lower end of the base 02 is fixed to the bottom plate 12, the limiting nut 01 is sleeved on the upper end of the base 02, and the upper end of the telescopic rod 06 passes through the bottom plate 12, the base 02 and the limiting nut 01 in sequence; the telescopic rod 06 is sleeved with a first spring 04, a sleeve 05 and a second spring 07 from top to bottom, wherein the first spring 04, the second spring 07 and the sleeve 05 are all located in the base 02; the sensor 09 is fixed on the outer wall of the base 02, and a long strip through hole is opened axially on the side wall of the base 02, and the end of the sensing plate 11 is connected to the sleeve 05 through a connecting piece, wherein the connecting piece passes through the long strip through hole, and the sensor 09 is located directly above the sensing plate 11.

[0025] The telescopic rod 06 includes an upper shaft section 0601, a lower shaft section 0602 and a disc 0603. The lower end of the lower shaft section 0602 is connected to the disc 0603. The upper end of the lower shaft section 0602 passes through the bottom plate 12 and is inserted into the base 02 and then connected to the lower end of the upper shaft section 0601. The upper end of the upper shaft section 0601 extends out of the base 02 and passes through the limiting nut 01. The first spring 04, the sleeve 05 and the second spring 07 are all sleeved on the upper shaft section 0601. The lower end of the second spring 07 is limited by the upper end surface of the lower shaft section 0602, the upper end of the second spring 07 is limited by the lower end of the sleeve 05, the lower end of the first spring 04 is limited by the sleeve 05, and the upper end of the first spring 04 is limited by the limiting nut 01.

[0026] The present invention also includes a fixing plate 10 and two first adjusting nuts 03 , wherein one side of the fixing plate 10 and the two first adjusting nuts 03 are both sleeved on the base 02 , and the fixing plate 10 is located between the two first adjusting nuts 03 , and the sensor 09 is fixed to the other side of the fixing plate 10 .

[0027] The upper end of the telescopic rod 06 is sleeved with a second adjusting nut 08; the base 02 is fixed to the bottom plate 12 by bolts; the connecting member is a bolt; a mounting hole is opened on the fixing plate 10, and the sensor 09 is installed in the mounting hole. The sensor 09 is a proximity induction switch structure.

[0028] The working process and working principle of the present invention are:

[0029] The sensor 09 is mounted on the fixed plate 10, and the base plate 12 is fixed on the object to be detected and moves synchronously with the object. When the disc 0603 is separated from the sensing object, the first spring 04 and the second spring 07 are in the initial state, a certain distance is maintained between the disc 0603 and the base plate 12, and a certain distance is maintained between the sensing plate 11 and the sensor 09, and the sensor 09 is not sensed; when the disc 0603 approaches the sensing object, the telescopic rod 06 moves upward, causing the first spring 04 to be compressed, the distance between the sensing plate 11 and the sensor 09 to decrease, and the sensor 09 is sensed; after the disc 0603 contacts the sensing object, the telescopic rod 06 continues to move upward until it contacts the base plate 12, the sensing plate 11 contacts the sensor 09, and the second spring 07 is compressed. The second spring 07 buffers the force to prevent the sensing plate 11 from directly squeezing and damaging the sensor 09.

Claims

1. A retractable sensor fixing and sensing device, characterized in that, It includes a base (02), a bottom plate (12), a limiting nut (01), a telescopic rod (06), a sensor (09) and a sensing plate (11); The base (02) is a hollow structure, the lower end of the base (02) is fixed on the bottom plate (12), the limiting nut (01) is sleeved on the upper end of the base (02), and the upper end of the telescopic rod (06) passes through the bottom plate (12), the base (02) and the limiting nut (01) in sequence; The telescopic rod (06) is sleeved with a first spring (04), a shaft sleeve (05) and a second spring (07) in sequence from top to bottom, wherein the first spring (04), the second spring (07) and the shaft sleeve (05) are all located in the base (02); The sensor (09) is fixed on the outer wall of the base (02), and a long strip through hole is opened in the axial direction on the side wall of the base (02). The end of the sensing plate (11) is connected to the shaft sleeve (05) through a connecting piece, wherein the connecting piece passes through the long strip through hole, and the sensor (09) is located directly above the sensing plate (11); The telescopic rod (06) includes an upper shaft section (0601), a lower shaft section (0602) and a disc (0603). The lower end of the lower shaft section (0602) is connected to the disc (0603). The upper end of the lower shaft section (0602) passes through the bottom plate (12) and is inserted into the base (02) and then connected to the lower end of the upper shaft section (0601). The upper end of the upper shaft section (0601) extends out of the base (02) and passes through the limit nut (01). The first spring (04), the shaft sleeve (05) and the second spring (07) are all sleeved on the upper shaft section (0601), the lower end of the second spring (07) is limited by the upper end surface of the lower shaft section (0602), the upper end of the second spring (07) is limited by the lower end of the shaft sleeve (05), the lower end of the first spring (04) is limited by the shaft sleeve (05), and the upper end of the first spring (04) is limited by the limiting nut (01); It also includes a fixing plate (10) and two first adjusting nuts (03), wherein one side of the fixing plate (10) and the two first adjusting nuts (03) are sleeved on the base (02), and the fixing plate (10) is located between the two first adjusting nuts (03), and the sensor (09) is fixed to the other side of the fixing plate (10); The upper end of the telescopic rod (06) is sleeved with a second adjusting nut (08); The base (02) is fixed to the bottom plate (12) by bolts; The connecting piece is a bolt; A mounting hole is provided on the fixing plate (10), and the sensor (09) is mounted in the mounting hole; The bottom plate (12) is fixed on the object to be detected and moves synchronously with the object. When the disc (0603) is separated from the sensing object, the first spring (04) and the second spring (07) are in the initial state, a certain distance is maintained between the disc (0603) and the bottom plate (12), and a certain distance is maintained between the sensing plate (11) and the sensor (09), and the sensor (09) is not sensed; when the disc (0603) approaches the sensing object, the telescopic rod 06 moves upward, causing the first spring (04) to be compressed, and the distance between the sensing plate (11) and the sensor (09) to be reduced, and the sensor (09) is sensed; after the disc (0603) contacts the sensing object, the telescopic rod (06) continues to move upward until it contacts the bottom plate (12), the sensing plate (11) contacts the sensor (09), the second spring (07) is compressed, and the second spring (07) buffers the force to prevent the sensing plate (11) from directly squeezing and damaging the sensor (09).

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