Proximity sensor
By designing an integrally packaged proximity sensor, the coordination of limit switch shaft, magnetic steel and spring parts, the problems of traditional limit switch wiring and unstable signal in a narrow space are solved, and the proximity sensor is realized Simple wiring and stable signal.
Patent Information
- Application Number
- CN202421191625.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-28
AI Technical Summary
When traditional limit switches are installed in a narrow switch box, the structures are crowded with each other, resulting in messy wiring, unstable sensing signals, insufficient working current, and single function.
Design a proximity sensor, adopting an overall package structure of cylinder block, cover body, switch assembly, sensor module and terminal assembly, and realizes the opening and opening of the proximity sensor through the cooperation of limit switch shaft, magnetic steel and spring parts. Closed state, the glue connection installation is cancelled, vibration is avoided, and wiring is simplified.
The simplicity of wiring is achieved, signal instability is avoided, and the stability and functional diversity of the sensor are enhanced.
Smart Images
Figure CN222298839U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure belongs to the technical field of sensors, and in particular relates to a proximity sensor. Background Art
[0002] The traditional limit switch is equipped with two magnetic switches. Since the shaft is connected to the valve, the position relationship of the valve opening or closing is known through the shaft. Since the magnet is installed on the shaft, the magnet contacts the magnetic switch. Since the magnetic switch needs to be connected to the remote device, the magnetic switch needs to be connected to the remote device through the terminal assembly. The remote device knows the opening and closing of the valve. However, since the magnetic switch, shaft, magnet, and terminal assembly must be installed in the switch box, and the switch box space is small, the installation of the above structures is limited. Several different structures are crowded inside the narrow switch box, resulting in messy and complicated wiring. In addition, due to the gluing of the magnetic switch, if the overall solenoid valve vibrates, the sensor signal is unstable. The traditional working current can only be 500ma. When used on site, if the working current is small, it cannot control other equipment, resulting in a single function. Summary of the invention
[0003] The object of the present disclosure is to provide a proximity sensor that can solve at least part of the above technical problems.
[0004] A first aspect of an embodiment of the present disclosure provides a proximity sensor, which includes a cylinder body, a cover body, a switch assembly, a sensor module and a terminal assembly; the cover body is fixedly connected to the cylinder body and cooperates to form an installation cavity; the sensor module is connected to the terminal assembly and is packaged together with the terminal assembly in the installation cavity; the switch assembly is movably installed in the installation cavity and has a first state and a second state; when the switch assembly is in the first state, the proximity sensor is in an on state, and when the switch assembly is in the second state, the proximity sensor is in a off state.
[0005] Optionally, the switch assembly includes a limit switch shaft; the limit switch shaft is rotatably installed in the installation cavity and has a first rotation position and a second rotation position. When the limit switch shaft is in the first position, the switch assembly is in a first state; when the limit switch shaft is in the second position, the switch assembly is in the second state.
[0006] Optionally, the switch assembly also includes a first magnet; the first magnet is sleeved and fixed on the limit switch shaft; the first magnet is a cam structure, and when the limit switch shaft is in the first position, the first magnet cooperates with the sensor module to make the proximity sensor in an on state.
[0007] Optionally, the switch assembly also includes a second magnet; the second magnet is fixedly mounted on the limit switch shaft and is located above or below the first magnet; the second magnet is a cam structure, and when the limit switch shaft is in the second position, the second magnet cooperates with the sensor module to place the proximity sensor in a closed state.
[0008] Optionally, the first magnetic steel and the second magnetic steel have the same protruding direction.
[0009] Optionally, the switch assembly further includes a spring member; the spring member is sleeved and installed on the limit switch shaft, and two ends of the spring member are respectively abutted against the first magnetic steel and the second magnetic steel.
[0010] Optionally, the sensor module has an arc-shaped recessed opening; the arc-shaped recessed opening is located on a side of the sensor module facing the limit switch axis.
[0011] Optionally, the switch assembly further includes an indicator; the indicator is mounted on one end of the limit switch shaft extending out of the cover body; an open area and a close area are displayed on the indicator, and the open area and the close area correspond to the first state and the second state of the switch assembly, respectively.
[0012] Optionally, the proximity sensor also includes a protective cover, which is a transparent structure on both sides and is installed on the top of the cover body to cooperate with the indicator, wherein when the open area is located in the transparent part of the protective cover, the proximity sensor is in an open state, and when the close area is located in the transparent part of the protective cover, the proximity sensor is in a closed state.
[0013] Optionally, the switch assembly further includes a bushing; the bottom end of the limit switch shaft is mounted on the cylinder body through the bushing.
[0014] The main technical effects achieved by the embodiments of the present disclosure are: the proximity sensor in the present disclosure has simple wiring, the wires are no longer installed in a messy manner in the installation cavity, the sensor module and the terminal assembly are packaged as an integrated structure as a whole, and the messy wiring method is eliminated; through the packaging method, when the proximity sensor is vibrated by external force, since the sensor module and the terminal assembly are no longer installed in the installation cavity by gluing, the sensor module and the terminal assembly avoid vibration, thereby ensuring the signal stability of the proximity sensor. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The structure of a proximity sensor in one embodiment of the present disclosure is shown in FIG. Figure 1 ;
[0016] Figure 2The structure of a proximity sensor in one embodiment of the present disclosure is shown in FIG. Figure 2 (Omit the cover);
[0017] Figure 3 The structure of a proximity sensor in one embodiment of the present disclosure is shown in FIG. Figure 2 (Cover and protective cover omitted).
[0018] Explanation of the accompanying drawings: 1. Cylinder body; 2. Cover body; 3. Switch assembly; 4. Sensor module; 5. Terminal assembly; 6. Installation cavity; 31. Limit switch shaft; 32. First magnet; 33. Second magnet; 34. Spring member; 35. Indicator; 7. Protective cover. DETAILED DESCRIPTION
[0019] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The modes described in the following exemplary embodiments do not represent all modes consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.
[0020] The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the present disclosure specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate a quantitative limitation, but indicate that there is at least one, and if only "one" is referred to, it will be separately described. "Multiple" or "several" means two or more. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation, and are not limited to one position or one spatial orientation. Similar words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0021] like Figure 1-2 As shown, the first aspect of the embodiment of the present disclosure provides a proximity sensor, which includes a cylinder body 1, a cover body 2, a switch assembly 3, a sensor module 4 and a terminal assembly 5; the cover body 2 is fixedly connected to the cylinder body 1 and cooperates to form an installation cavity 6; the sensor module 4 is connected to the terminal assembly 5 and is packaged together with the terminal assembly 5 in the installation cavity 6; the switch assembly 3 is movably installed in the installation cavity 6 and has a first state and a second state; when the switch assembly 3 is in the first state, the proximity sensor is in an on state, and when the switch assembly 3 is in the second state, the proximity sensor is in a off state.
[0022] Through such an arrangement, the proximity sensor wiring in the present invention is simple, and the wires are no longer installed in a messy manner in the installation cavity 6. The sensor module 4 and the terminal assembly 5 are packaged as an integrated structure as a whole, eliminating the messy wiring method; through the packaging method, when the proximity sensor is vibrated by external force, since the sensor module 4 and the terminal assembly 5 are no longer installed in the installation cavity 6 by gluing, the sensor module 4 and the terminal assembly 5 avoid vibration, thereby ensuring the signal stability of the proximity sensor.
[0023] As an optional embodiment, the switch assembly 3 includes a limit switch shaft 31, a first magnetic steel 32, a second magnetic steel 33, a spring member 34, an indicator 35 and a protective cover 7; the bottom end of the limit switch shaft 31 is rotatably mounted in the mounting cavity 6 through a bushing, and the top end of the limit switch shaft 31 extends out of the cover body 2 and is fixedly connected to the indicator 35; the indicator 35 displays an open area and a closed area, and the open area and the closed area correspond to the first state and the second state of the switch assembly 3, respectively; the protective cover 7 is a transparent structure on both sides, and is installed on the top end of the cover body 2 to cooperate with the indicator 35, wherein when the open area is located at the transparent part of the protective cover 7, the proximity sensor is in the open state, and when the close area is located at the transparent part of the protective cover 7, the proximity sensor is in the closed state. The first magnetic steel 32 and the second magnetic steel 33 are fixedly mounted on the limit switch shaft 31, and are used to cooperate with the sensor module 4 to control the opening or closing of the proximity sensor.
[0024] The limit switch shaft 31 has a first rotation position and a second rotation position. When the limit switch shaft 31 is in the first position, the switch assembly 3 is in the first state; at this time, the open area on the indicator 35 is located at the transparent part of the protective cover 7, and the first magnetic steel 32 cooperates with the sensor module 4, so that the proximity sensor is in the open state. When the limit switch shaft 31 is in the second position, the switch assembly 3 is in the second state; at this time, the close area on the indicator 35 is located at the transparent part of the protective cover 7, and the second magnetic steel 33 cooperates with the sensor module 4, so that the proximity sensor is in the open state.
[0025] Through such a configuration, on the one hand, the user can intuitively observe whether the proximity sensor is turned on, and on the other hand, it is also convenient for the user to rotate the limit center axis through the indicator 35 to turn the proximity sensor on or off. The structure is simple and the operation is convenient.
[0026] As an optional embodiment, the first magnet 32 is a cam structure. When the limit switch shaft 31 is in the first position, the protruding direction of the first magnet 32 points to the first sensing point of the sensor module 4, thereby cooperating with the sensor module 4 to put the proximity sensor in an on state.
[0027] As an optional embodiment, the second magnet 33 is located above or below the first magnet 32; the second magnet 33 is a cam structure, and when the limit switch shaft 31 is in the second position, the protruding direction of the second magnet 33 points to the second sensing point of the sensor module 4, thereby cooperating with the sensor module 4 to put the proximity sensor in an on state.
[0028] As an optional implementation, the first magnetic steel 32 and the second magnetic steel 33 have the same protruding direction. By such an arrangement, the first magnetic steel 32 and the second magnetic steel 33 can be prevented from interfering with each other.
[0029] As an optional implementation, the switch assembly 3 further includes a spring member 34 ; the spring member 34 is sleeved and installed on the limit switch shaft 31 , and two ends thereof are respectively in contact with the first magnetic steel 32 and the second magnetic steel 33 .
[0030] As an optional embodiment, the sensor module 4 has an arc-shaped recessed opening; the arc-shaped recessed opening is located on the side of the sensor module 4 facing the limit switch shaft 31. By such an arrangement, the first magnetic steel 32 and the second magnetic steel 33 have a good activity space in the installation cavity 6, thereby preventing the first magnetic steel 32 and the second magnetic steel 33 from interfering with the sensor module 4 when rotating.
[0031] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.
Claims
1. A proximity sensor, characterized in that: The proximity sensor includes a cylinder body, a cover body, a switch assembly, a sensor module and a terminal assembly; the cover body is fixedly connected to the cylinder body and cooperates to form an installation cavity; the sensor module is connected to the terminal assembly and is encapsulated in the installation cavity together with the terminal assembly; the switch assembly is movably installed in the installation cavity and has a first state and a second state; when the switch assembly is in the first state, the proximity sensor is in an on state, and when the switch assembly is in the second state, the proximity sensor is in a off state.
2. A proximity sensor according to claim 1, characterized in that: The switch assembly includes a limit switch shaft; the limit switch shaft is rotatably installed in the installation cavity and has a first rotation position and a second rotation position. When the limit switch shaft is in the first position, the switch assembly is in a first state; when the limit switch shaft is in the second position, the switch assembly is in the second state.
3. A proximity sensor according to claim 2, characterized in that: The switch assembly also includes a first magnet; the first magnet is sleeved and fixed on the limit switch shaft; the first magnet is a cam structure, and when the limit switch shaft is in a first position, the first magnet cooperates with the sensor module to make the proximity sensor in an on state.
4. A proximity sensor according to claim 3, characterized in that: The switch assembly also includes a second magnet; the second magnet is fixedly mounted on the limit switch shaft and is located above or below the first magnet; the second magnet is a cam structure, and when the limit switch shaft is in the second position, the second magnet cooperates with the sensor module to place the proximity sensor in a closed state.
5. A proximity sensor according to claim 4, characterized in that: The first magnetic steel and the second magnetic steel have the same protruding direction.
6. A proximity sensor according to claim 4, characterized in that: The switch assembly further comprises a spring component; the spring component is sleeved and mounted on the limit switch shaft, and two ends of the spring component are respectively in contact with the first magnetic steel and the second magnetic steel.
7. A proximity sensor according to claim 2, characterized in that: The sensor module has an arc-shaped recessed opening; the arc-shaped recessed opening is located on a side of the sensor module facing the limit switch shaft.
8. A proximity sensor according to claim 2, characterized in that: The switch assembly also includes an indicator; the indicator is installed at one end of the limit switch shaft extending out of the cover body; the indicator displays an open area and a close area, and the open area and the close area correspond to the first state and the second state of the switch assembly respectively.
9. A proximity sensor according to claim 8, characterized in that: The proximity sensor also includes a protective cover, which is a transparent structure on both sides and is installed on the top of the cover body to cooperate with the indicator, wherein when the open area is located at the transparent part of the protective cover, the proximity sensor is in an open state, and when the close area is located at the transparent part of the protective cover, the proximity sensor is in a closed state.
10. A proximity sensor according to claim 2, characterized in that: The switch assembly also includes a bushing; the bottom end of the limit switch shaft is mounted on the cylinder body through the bushing.