Portable magnetic proximity switch detection device

Abstract

The present invention discloses a portable magnetic proximity switch detection device, comprising: a housing having a first accommodating chamber and a second accommodating chamber for placing a switch to be tested; a test magnet, which is arranged in the first accommodating chamber and has a first position closest to the switch to be tested and a second position farthest from the switch to be tested, and the test magnet moves between the first position and the second position; and a detection circuit, which has a power supply, an indicator and a plug connector arranged in series and used to connect the switch to be tested. The present invention has an ingenious structure, a compact size and is easy to operate. It can conveniently install the switch to be tested into the semi-enclosed second accommodating chamber, and uses a push-type moving part that can automatically return to its position, in conjunction with the first accommodating chamber with a limit position, to replace the screw transmission method of the traditional detection platform and the fixing method of the detection tooling, so as to limit the moving path and moving distance of the detection magnet, and make the movement of the detection magnet more convenient and quick.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic proximity switch detection, in particular to a portable magnetic proximity switch detection device. Background Art

[0002] Magnetic proximity switches use soft magnetic reeds as contact switches. They use the magnetization characteristics of soft magnets under magnetic fields and cooperate with external magnets to sense the position of the object being measured. They are usually used for position detection. Among the performance parameters of magnetic proximity switches, the most important one is the operating distance, which refers to the farthest distance at which the test magnet can just turn on the magnetic proximity switch. It determines whether the external magnet can turn on the magnetic proximity switch within the specified range.

[0003] There are generally two methods for detecting magnetic proximity switches. One is to connect the magnetic proximity switch in series to the detection circuit on the test platform, slowly approach the standard detection magnet from the far end through the controller, record the distance at which the switch is triggered to turn on, and check whether it is within the specified action distance range. This method requires the construction of a complex platform and control circuit in the early stage. The platform is relatively large and bulky, which is not convenient for picking up and moving. In addition, the magnetic proximity switch needs to be completely fixed on the platform during the test. For the magnetic proximity switch that has been installed on the instrument, it needs to be disassembled before detection, which limits its use. The second method is to limit the distance between the test magnet and the magnetic proximity switch to the minimum value required for the action distance through the tooling to check whether the magnetic proximity switch can be triggered to turn on. This method uses the tooling to fix the distance between the test magnet and the magnetic proximity switch to reduce the size of the detection device, but because the distance is fixed at the minimum value required for the action distance, it can only effectively detect defective products with a smaller action distance, and cannot detect defective products with a larger action distance. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a portable magnetic proximity switch detection device with small size, convenient use and wide application, which can specifically adopt the following technical solutions:

[0005] The portable magnetic proximity switch detection device of the present invention comprises:

[0006] The housing has a first accommodating cavity and a second accommodating cavity for accommodating the switch to be tested;

[0007] A test magnet is disposed in the first accommodating cavity, has a first position closest to the switch to be tested and a second position farthest from the switch to be tested, and the test magnet moves between the first position and the second position;

[0008] The detection circuit comprises a power supply, an indicator and a plug connector for connecting a switch to be tested, which are arranged in series.

[0009] The second accommodating cavity is a semi-enclosed groove adapted to the switch to be tested.

[0010] The first accommodating cavity has a first end surface and a second end surface which are arranged opposite to each other. The first end surface is arranged close to the second accommodating cavity, and a guide hole which passes through the shell is opened on the second end surface.

[0011] A moving part for connecting the test magnet is also arranged in the first accommodating cavity. One end of the moving part is arranged opposite to the first end surface, and the other end is arranged opposite to the second end surface. A guide rod extending from the moving part and penetrating the guide hole is arranged thereon.

[0012] The test magnet is arranged at one end of the first end surface of the moving part.

[0013] The testing magnet is connected to the moving part through bolts.

[0014] A return spring is also arranged in the first accommodating cavity.

[0015] The return spring is arranged between the first end surface of the first accommodating cavity and the moving member.

[0016] The power source is a button battery, and the indicator is an LED lamp.

[0017] The detection circuit is arranged on the housing.

[0018] The portable magnetic proximity switch detection device provided by the present invention has an ingenious structure, a compact size, and is easy to operate. The switch to be tested can be conveniently installed in a semi-enclosed second accommodating chamber, and a push-type moving part that can automatically return to its original position is used in conjunction with a first accommodating chamber with a limit position, thereby replacing the screw transmission method of a traditional detection platform and the fixing method of a detection tooling, limiting the moving path and moving distance of the detection magnet, making the movement of the detection magnet more convenient and quick, and indicating whether the switch to be tested is qualified through a detection circuit with an LED, etc., thereby simplifying the judgment method. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 yes Figure 1 Schematic diagram of the decomposition. DETAILED DESCRIPTION

[0021] The following is a detailed description of an embodiment of the present invention in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific working process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0022] like Figure 1 ,2 As shown, the portable magnetic proximity switch detection device of the present invention comprises a rectangular housing 1, on the top of which a detection circuit is installed, including a button battery 201 (power source), an LED lamp 202 (indicator) and a plug connector 203 connected in series through wires, and the plug connector 203 is used to connect the switch M to be tested. A first accommodating chamber 3 is provided in the middle of the housing 1, and a second accommodating chamber 4 for placing the switch M to be tested is provided at the bottom. A moving part 6 for connecting the test magnet 5 is installed in the first accommodating chamber 3, and the two usually move along the longitudinal direction of the housing 1, that is, along the arrangement direction of the first accommodating chamber 3 and the second accommodating chamber 4. In this embodiment, the test magnet 5 is installed on the side of the moving part 6 by bolts, and the bottom surfaces of the two are flush. In order to allow the test magnet 5 and the moving part 6 to have sufficient moving space, the distance between the top surface (i.e., the second end surface) and the bottom surface (i.e., the first end surface) of the first accommodating chamber 3 is usually greater than the longitudinal length of the test magnet 5 and the moving part 6; at the same time, the first end surface and the second end surface also limit the moving distance of the test magnet 5, so as to facilitate the detection of the switch M to be tested within the specified action distance range. Normally, the closest distance between the test magnet 5 and the switch M to be tested is called the first position, and the farthest distance between the test magnet 5 and the switch M to be tested is called the second position. In order to facilitate the push-pull movement member 6, the top of the movement member 6 is provided with a guide rod 7 that can pass through the housing 1, and accordingly, a guide hole that matches the shape of the guide rod 7 is provided on the top surface of the housing 1. Further, in order to improve the convenience of operation, a return spring 8 is installed between the bottom surface of the movement member 6 and the bottom surface of the first accommodating chamber 3, so that the test magnet 5 and the movement member 6 can automatically return to their positions after being pushed. At this time, the first position of the test magnet 5 is the position where the return spring 8 is compressed to the maximum, and the second position is still the position where the test magnet 5 is when the top surface of the movement member 6 contacts the top surface of the first accommodating chamber 3. But in actual operation, the position where the test magnet 5 is when the top surface of the movement member 6 contacts the top surface of the first accommodating chamber 3 should be slightly larger than the maximum distance of the test magnet 5 prescribed action, so that the LED lamp 202 does not emit light when the test magnet 5 is in the initial position. In order to facilitate the placement and removal of the switch M to be tested, the second accommodating cavity 4 is a semi-enclosed groove adapted to the switch M to be tested.

[0023] When in use, first install the switch M to be tested in the second accommodating cavity 4, then connect the switch M to be tested and the plug connector 203 through a wire, then slowly press the guide rod 7 to make the movable part 6 drive the test magnet 5 to move downward. If the switch M to be tested is qualified, the test magnet 5 will trigger the switch M to be tested at a certain position in the stroke, so that the LED lamp 202 will light up; on the contrary, if the LED lamp 202 has already lighted when the test magnet 5 is in the initial state or the LED lamp 202 still does not light up when the test magnet 5 reaches the second position, then it is judged that the switch M to be tested is unqualified.

[0024] It should be noted that, in the description of the present invention, terms indicating orientation or positional relationships, such as "front", "rear", "left", "right", "vertical", "horizontal", "inside", "outside", etc., are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

Claims

1. A portable magnetic proximity switch detection device, characterized in that: include The housing has a first accommodating cavity and a second accommodating cavity for accommodating the switch to be tested; A test magnet is disposed in the first accommodating cavity, has a first position closest to the switch to be tested and a second position farthest from the switch to be tested, and the test magnet moves between the first position and the second position; as well as A detection circuit having a power supply, an indicator and a plug connector for connecting to a switch to be tested arranged in series; The first accommodating cavity has a first end surface and a second end surface which are arranged opposite to each other, the first end surface is arranged close to the second accommodating cavity, and the second end surface is provided with a guide hole which penetrates the shell; A moving part for connecting the test magnet is also arranged in the first accommodating cavity, one end of the moving part is arranged opposite to the first end surface, the other end is arranged opposite to the second end surface, and a guide rod extending from the moving part and penetrating the guide hole is arranged thereon; The test magnet is arranged at one end of the first end surface of the moving part; A return spring is also arranged in the first accommodating chamber; The return spring is arranged between the first end surface of the first accommodating cavity and the moving member; The power source is a button battery, and the indicator is an LED lamp; When in use, first install the switch to be tested in the second accommodating cavity, then connect the switch to be tested and the plug connector through a wire, then slowly press the guide rod to make the moving part drive the test magnet to move downward, if the switch to be tested is qualified, the test magnet will trigger the switch to be tested at a certain position in the stroke, so that the LED light will light up; On the contrary, if the LED light is already lit when the test magnet is in the initial state or the LED light is still not lit when the test magnet reaches the second position, it is determined that the switch to be tested is unqualified.

2. The portable magnetic proximity switch detection device according to claim 1, characterized in that: The second accommodating cavity is a semi-enclosed groove adapted to the switch to be tested.

3. The portable magnetic proximity switch detection device according to claim 1, characterized in that: The testing magnet is connected to the moving part through bolts.

4. The portable magnetic proximity switch detection device according to any one of claims 1 to 3, characterized in that: The detection circuit is arranged on the housing.

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