M5 contact sensor

Abstract

The utility model discloses a kind of M5 contact type sensors, it includes shell, shell front end is equipped with connector, the connector is connected with shell inner cavity intercommunication;Radially movable cylinder is inserted in connector, the one end of the cylinder can be moved to shell inner cavity with extrusion, the other end extends connector;The outer diameter of the end of connector away from shell is equipped with reinforcing ring, the outer surface of cylinder extension end is provided with recessed clamping groove;Shell front end is provided with rubber sleeve, rubber sleeve is sleeved in connector and cylinder outside, and rubber sleeve inner wall is compatible with reinforcing ring, and its end portion is embedded in clamping groove. Static seal is formed between rubber sleeve and connector by rubber sleeve, effectively isolate external medium from the junction to invade shell interior;And dynamic seal is formed between rubber sleeve and radially movable cylinder, ensure that sealing interface is always effective when cylinder moves, to achieve high-grade waterproof, oil-proof and dustproof effect, improve the reliability and durability of sensor in harsh environment.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to an M5 contact sensor. Background Technology

[0002] The M5 contact sensor, as a miniaturized precision detection element, is widely used in industrial automation, CNC machine tools, robotics and other fields due to its compact structure and high sensitivity, to achieve functions such as position detection, counting or limit switching.

[0003] Traditional sensor designs are relatively simple, with the seal between the front movable rod and the housing typically relying on a single rubber sleeve or a simple clearance fit. While this structure is adequate in dry, dust-free environments, in the presence of cutting fluid, lubricating oil, or high-pressure water mist, these substances can easily seep into the sensor through the gap between the rod and the housing. This not only leads to corrosion and contamination of internal metal components (such as springs and contacts) but also causes a decrease in insulation performance, and may even result in internal short circuits, ultimately causing sensor signal failure or premature malfunction. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide an M5 contact sensor that solves the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an M-type contact sensor includes a housing, a connector at the front end of the housing, the connector being connected to the inner cavity of the housing; a radially movable column is inserted into the connector, one end of the column being able to move into the inner cavity of the housing upon compression, and the other end extending out of the connector; a reinforcing ring is provided on the outer diameter of the end of the connector facing away from the housing, and a recessed groove is formed on the outer surface of the extended end of the column; a rubber sleeve is provided at the front end of the housing, the rubber sleeve being fitted over the connector and the column, and the inner wall of the rubber sleeve being adapted to the reinforcing ring, with its end embedded in the groove.

[0006] Furthermore, the outer contour of the rubber sleeve embedded in the slot gradually narrows until it smoothly connects with the outer contour of the column.

[0007] Furthermore, the inner cavity of the housing is provided with a radially movable contact element, and an insulating column connects the contact element and the column.

[0008] Furthermore, both ends of the column extend into the contact and insulating column respectively and abut against them, creating a gap between the contact and the insulating column.

[0009] Furthermore, a spring is provided inside the housing, with one end of the spring connected to a contact element.

[0010] Furthermore, a conductive terminal is connected to the end of the spring away from the contact element, and the end of the conductive terminal away from the spring extends out from the rear end of the housing.

[0011] Furthermore, an insulating cylinder is inserted into the port at the rear end of the housing, and conductive terminals pass through the insulating cylinder.

[0012] Furthermore, a protective sleeve is fitted to the rear end of the housing, and both the conductive terminals and the insulating sleeve are located inside the protective sleeve.

[0013] Furthermore, the outer shell is made of silver-plated copper, and the column is made of stainless steel.

[0014] Furthermore, the contacts are silver point contacts, and the springs are silver-plated springs.

[0015] Compared with existing technologies, this invention has significant advantages and beneficial effects. Specifically, as can be seen from the above technical solution, a static seal is formed between the rubber sleeve and the connector, effectively preventing external media from intruding into the housing from this joint; and a dynamic seal is formed between the rubber sleeve and the radially movable column, ensuring that the sealing interface remains effective when the column moves. This achieves a high level of waterproof, oil-proof, and dustproof performance, improving the reliability and durability of the sensor in harsh environments.

[0016] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a perspective view of Embodiment 1 of this utility model.

[0018] Figure 2 This is a cross-sectional view of the inner cavity of Embodiment 1 of this utility model.

[0019] Figure 3 This is a plan view of Embodiment 1 of this utility model.

[0020] Explanation of reference numerals in the attached diagram:

[0021] Spacing A;

[0022] Housing 10, connector 11, reinforcing ring 111;

[0023] Column 20, slot 21;

[0024] Rubber sleeve 30, contact 40, insulating post 50, spring 60, conductive terminal 70, insulating cylinder 80, protective cylinder 90. Detailed Implementation

[0025] Please refer to Figure 1-3As shown, it illustrates the specific structure of a preferred first embodiment of the present invention, which is an M5 contact sensor, including a housing 10. A connector 11 is provided at the front end of the housing 10, and the connector 11 is connected to the inner cavity of the housing 10. A radially movable column 20 is inserted into the connector 11. One end of the column 20 can be moved into the inner cavity of the housing 10 by compression, and the other end extends out of the connector 11. A reinforcing ring 111 is provided on the outer diameter of the end of the connector 11 facing away from the housing 10. A recessed groove 21 is opened on the outer surface of the extended end of the column 20. A rubber sleeve 30 is provided at the front end of the housing 10. The rubber sleeve 30 is sleeved on the connector 11 and the column 20, and the inner wall of the rubber sleeve 30 is adapted to the reinforcing ring 111. Its end is embedded in the groove 21. A static seal is formed between the rubber sleeve 30 and the connector 11, effectively preventing external media from intruding into the housing 10 from this joint. A dynamic seal is also formed between the rubber sleeve 30 and the radially movable column 20, ensuring the sealing interface remains effective as the column 20 moves. This achieves a high level of waterproof, oil-proof, and dustproof performance, improving the reliability and durability of the sensor in harsh environments.

[0026] For example, the outer contour of the rubber sleeve 30 embedded in the slot 21 gradually narrows until it smoothly connects with the outer contour of the column 20. The smooth outer surface without any gaps is not easy to adhere to oil, dust and other media, which not only makes it easy to clean, but also reduces the volume of the rubber sleeve 30, reduces its impact on the movement of the column 20 and avoids jamming.

[0027] For example, the inner cavity of the housing 10 is provided with a radially movable contact 40, and an insulating post 50 is connected between the contact 40 and the post 20. By connecting the insulating post 50 between the radially movable contact 40 and the post 20, reliable transmission of external mechanical force to the internal electrical contact components is achieved, while ensuring electrical isolation between the two and effectively preventing the risk of short circuit.

[0028] For example, both ends of the column 20 extend into and abut against the contact 40 and the insulating column 50, respectively, forming a gap A between the contact 40 and the insulating column 50. The gap A ensures that the insulating column 50 can push the contact 40 to complete the electrical signal triggering, and acts as a mechanical buffer and electrical isolation zone to prevent high voltage from creeping or breaking down through the insulating column 50 under abnormal force or overshoot, thereby improving the electrical safety and shock resistance reliability of the sensor.

[0029] For example, the inner cavity of the housing 10 is provided with a spring 60, one end of which is connected to the contact 40. The spring 60 provides a reset force for the entire triggering mechanism, ensuring rapid and stable switching of the electrical contact signal, while also giving the sensor a certain overload protection capability.

[0030] For example, a conductive terminal 70 is connected to one end of the spring 60 away from the contact member 40, and the conductive terminal 70 extends from the rear end of the housing 10 at one end away from the spring 60. The spring 60 serves as a conductive element and a force transmission element, with one end connected to the contact member 40 and the other end connected to the rearwardly extending conductive terminal 70. This guides the electrical signal generated by the internal contact member 40 to the outside of the sensor via the spring → conductive terminal, achieving a stable output of the electrical signal.

[0031] For example, an insulating cylinder 80 is inserted into the port at the rear end of the housing 10, and a conductive terminal 70 passes through the insulating cylinder 80. The insertion of the insulating cylinder 80 into the rear end port of the housing 10, and the allowing the conductive terminal 70 to pass through it, achieves double insulation and a robust seal, preventing short circuits of current into the housing and the intrusion of external contaminants from the tail, ensuring the safety of signal output and the overall environmental tolerance of the sensor.

[0032] For example, a protective sleeve 90 is fitted onto the rear end of the housing 10, and both the conductive terminal 70 and the insulating sleeve 80 are located inside the protective sleeve 90. The live conductive terminal 70 is shielded inside the protective sleeve 90, which structurally prevents operators from accidentally touching it, and also prevents metal tools, wires or other foreign objects from accidentally coming into contact with the terminal and causing a short circuit, thus improving the safety performance of the equipment.

[0033] The shell 10 is a copper-plated silver shell, and the column 20 is a stainless steel column.

[0034] Contact 40 is a silver point contact, and spring 60 is a silver-plated spring.

[0035] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An M5 contact sensor, characterized in that: The device includes a housing (10), with a connector (11) at the front end of the housing (10) and the connector (11) communicating with the inner cavity of the housing (10); a radially movable column (20) is inserted into the connector (11), one end of which can be moved into the inner cavity of the housing (10) by compression, and the other end extends out of the connector (11); a reinforcing ring (111) is provided on the outer diameter of the end of the connector (11) away from the housing (10), and a recessed groove (21) is provided on the outer surface of the extended end of the column (20); a rubber sleeve (30) is provided at the front end of the housing (10), the rubber sleeve (30) is sleeved on the connector (11) and the column (20), and the inner wall of the rubber sleeve (30) is adapted to the reinforcing ring (111), and its end is embedded in the groove (21).

2. The M5 contact sensor according to claim 1, characterized in that: The outer contour of the rubber sleeve (30) embedded in the slot (21) gradually narrows until it smoothly connects with the outer contour of the column (20).

3. The M5 contact sensor according to claim 1, characterized in that: The inner cavity of the housing (10) is provided with a radially movable contact (40), and an insulating column (50) is connected between the contact (40) and the column (20).

4. The M5 contact sensor according to claim 3, characterized in that: The two ends of the column (20) extend into the contact (40) and the insulating column (50) respectively and abut against them, so that a gap (A) is formed between the contact (40) and the insulating column (50).

5. An M5 contact sensor according to claim 3, characterized in that: The inner cavity of the housing (10) is provided with a spring (60), one end of which is connected to the contact (40).

6. An M5 contact sensor according to claim 5, characterized in that: The end of the spring (60) away from the contact (40) is connected to a conductive terminal (70), and the end of the conductive terminal (70) away from the spring (60) extends out from the rear end of the housing (10).

7. An M5 contact sensor according to claim 6, characterized in that: An insulating cylinder (80) is inserted into the port at the rear end of the housing (10), and a conductive terminal (70) passes through the insulating cylinder (80).

8. An M5 contact sensor according to claim 7, characterized in that: The rear end of the housing (10) is fitted with a protective cylinder (90), and the conductive terminal (70) and the insulating cylinder (80) are both located inside the protective cylinder (90).

9. An M5 contact sensor according to claim 1, characterized in that: The shell (10) is a copper-plated silver shell, and the column (20) is a stainless steel column.

10. An M5 contact sensor according to claim 5, characterized in that: The contact (40) is a silver point contact, and the spring (60) is a silver-plated spring.

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