Improved capacitive proximity switch

Abstract

The utility model discloses an improved capacitive proximity switch, which relates to the technical field of proximity switches, and comprises a shell assembly used for protecting internal assemblies; an internal component; the guide sealing mechanism comprises a guide groove, a bottom plate, a rubber sleeve, a guide rod, a sealing ring and a threaded sleeve; a plurality of guide grooves are uniformly formed in the bottom of the outer side of the main shell, the bottom plate and the rubber sleeve are sequentially and fixedly connected to the outer side of a cable in a sleeving mode from top to bottom, and a plurality of guide rods are uniformly and fixedly arranged at the edge of the top of the bottom plate. According to the utility model, the structure is simple, the production and assembly difficulty is effectively reduced, the production cost is further reduced, the sealing ring can effectively seal the bottom opening of the main shell, and the sealing effect between the main shell and the bottom plate is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of proximity switch technology, and in particular to an improved capacitive proximity switch. Background Technology

[0002] Capacitive proximity switches are used to detect the approach or presence of an object without direct contact with it. Based on the principle of capacitance, they determine the position or presence of the object by measuring the change in capacitance between the object and the sensor. They are widely used in industrial automation and control systems.

[0003] A search revealed that utility model patent CN221978914U discloses a capacitive proximity switch, including a housing. The housing has two nuts threaded to its exterior, a cap threaded to its top outer wall, and tilting blocks slidably connected to both the left and right ends of the bottom of the housing. Limiting plates are fixedly connected to adjacent sides of the two tilting blocks, and multiple springs are fixedly connected to adjacent sides of the two limiting plates. A base is slidably connected to the exterior of the bottom of the housing.

[0004] However, the aforementioned proximity switches still have some drawbacks in actual use. The most obvious ones are that the tilt block and button are too small, making actual production and assembly difficult and significantly increasing production costs. At the same time, the sealing effect between the housing and the base cannot be guaranteed.

[0005] Therefore, it is necessary to invent an improved capacitive proximity switch to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide an improved capacitive proximity switch with a simple structure, which effectively reduces the difficulty of production and assembly, thereby reducing production costs. At the same time, the sealing ring can effectively seal the bottom opening of the main housing, thereby ensuring the sealing effect between the main housing and the base plate. This solves the problems mentioned in the background art, such as the small size of the inclined block and button, which makes actual production and assembly difficult, significantly increasing production costs, and the inability to guarantee the sealing effect between the housing and the base.

[0007] According to one aspect of this disclosure, the following technical solution is provided: an improved capacitive proximity switch, comprising:

[0008] A housing assembly for protecting internal components;

[0009] Internal components; and

[0010] A guide sealing mechanism, comprising a guide groove, a base plate, a rubber sleeve, a guide rod, a sealing ring, and a threaded sleeve;

[0011] Multiple guide grooves are provided, and the multiple guide grooves are evenly opened on the bottom outer side of the main housing. The base plate and the rubber sleeve are fixedly sleeved on the outside of the cable from top to bottom. Multiple guide rods are provided, and the multiple guide rods are evenly fixedly installed on the top edge of the base plate and integrally formed with the base plate. The sealing ring is located on the bottom inner side of the four guide rods and fits against the top of the base plate. The threaded sleeve is rotatably sleeved on the outside of the base plate through the bearing and is connected to the main housing through the first external thread.

[0012] According to at least one embodiment of the improved capacitive proximity switch of the present disclosure, the guide sealing mechanism further includes a plurality of protective protrusions, which are uniformly fixedly disposed on the outside of the threaded sleeve.

[0013] According to at least one embodiment of the present disclosure, an improved capacitive proximity switch includes a housing assembly comprising a main housing and a sealing cover located on top of the main housing.

[0014] According to at least one embodiment of the improved capacitive proximity switch of the present disclosure, the housing assembly further includes a first external thread and a second external thread, the first external thread being disposed at the bottom outer side of the main housing, and the second external thread being disposed at the top outer side of the main housing, the second external thread being connected to the main housing via a sealing cap.

[0015] An improved capacitive proximity switch according to at least one embodiment of the present disclosure includes internal components and a cable, wherein the components are located inside the main housing and fixedly connected to the top of the cable.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] This invention features a guiding and sealing mechanism. When components need to be removed from the main housing for maintenance, the operator can continuously rotate the threaded sleeve. Because the guide rod is located inside the guide groove, the base plate cannot rotate synchronously with the threaded sleeve. As the threaded sleeve rotates continuously, it gradually disengages from the outside of the first external thread until it is completely separated from the main housing. At this point, the threaded sleeve is continuously moved downwards until the component is completely removed from the bottom opening of the main housing. Compared with existing similar products, this invention has a simple structure, effectively reducing production and assembly difficulties, thereby reducing production costs. At the same time, the sealing ring can effectively seal the bottom opening of the main housing, thus ensuring the sealing effect between the main housing and the base plate. Attached Figure Description

[0018] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0019] Figure 1 This is a schematic diagram of the overall structure of an improved capacitive proximity switch according to one embodiment of the present disclosure.

[0020] Figure 2 This is a schematic diagram of the housing assembly structure of an improved capacitive proximity switch according to one embodiment of the present disclosure.

[0021] Figure 3 This is a schematic diagram of the internal components and guide sealing mechanism of an improved capacitive proximity switch according to one embodiment of the present disclosure.

[0022] The specific labels in the attached figures are as follows:

[0023] 1. Housing assembly; 11. Main housing; 12. First external thread; 13. Second external thread; 14. Sealing cap;

[0024] 2. Internal components; 21. Components; 22. Cables;

[0025] 3. Guide sealing mechanism; 31. Guide groove; 32. Base plate; 33. Rubber sleeve; 34. Guide rod; 35. Sealing ring; 36. Threaded sleeve; 37. Protective protrusion. Detailed Implementation

[0026] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings were flipped, a component described as “below” or “under” other components or features would subsequently be positioned “above” said other components or features. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0027] Figure 1 This is a schematic diagram of the overall structure of an improved capacitive proximity switch according to one embodiment of the present disclosure.

[0028] Figure 2 This is a schematic diagram of the housing assembly 1 of an improved capacitive proximity switch according to one embodiment of the present disclosure.

[0029] Figure 3This is a schematic diagram of the internal components 2 and the guide sealing mechanism 3 of an improved capacitive proximity switch according to one embodiment of the present disclosure.

[0030] like Figures 1-3 As shown, the improved capacitive proximity switch of this disclosure may include components such as a housing assembly 1, an internal assembly 2, and a guide sealing mechanism 3.

[0031] like Figure 2 As shown in this disclosure, the outer casing assembly 1 includes a main casing 11, a first external thread 12, a second external thread 13, and a sealing cap 14. The sealing cap 14 is located at the top of the main casing 11, the first external thread 12 is disposed at the bottom outer side of the main casing 11, and the second external thread 13 is disposed at the top outer side of the main casing 11. The second external thread 13 is connected to the main casing 11 through the sealing cap 14.

[0032] Therefore, the guide sealing mechanism 3 can be connected using the first external thread 12, and the sealing cover 14 can be connected using the second external thread 13. When it is necessary to inspect the internal component 2 inside the outer shell assembly 1, the guide sealing mechanism 3 can be removed from the outside of the first external thread 12.

[0033] like Figure 3 As shown, in a preferred embodiment, the internal component 2 includes a component 21 and a cable 22, wherein the component 21 is located inside the main housing 11 and is fixedly connected to the top of the cable 22.

[0034] It should be noted that the component 21 is a solution already disclosed in the prior art and is not a necessary technical feature for solving the technical problem of this application. Therefore, this application will not elaborate on the specific structure and working principle of the component 21 here.

[0035] like Figure 3 As shown in this disclosure, the guiding and sealing mechanism 3 includes a guide groove 31, a base plate 32, a rubber sleeve 33, guide rods 34, a sealing ring 35, a threaded sleeve 36, and protective protrusions 37. Multiple guide grooves 31 are provided, evenly spaced on the outer bottom of the main housing 11. The base plate 32 and the rubber sleeve 33 are sequentially and fixedly fitted onto the outer side of the cable 22 from top to bottom. Multiple guide rods 34 are provided, evenly and fixedly fitted at the top edge of the base plate 32 and integrally formed with it. The sealing ring 35 is located at the bottom inner side of the four guide rods 34 and fits against the top of the base plate 32. The threaded sleeve 36 is rotatably fitted onto the outer side of the base plate 32 via a bearing and connected to the main housing 11 via a first external thread 12. Multiple protective protrusions 37 are provided, evenly and fixedly fitted onto the outer side of the threaded sleeve 36.

[0036] Therefore, when it is necessary to remove component 21 from inside the main housing 11 for maintenance, the operator can continuously rotate the threaded sleeve 36. Since the guide rod 34 is located inside the guide groove 31, the base plate 32 cannot rotate synchronously with the threaded sleeve 36. As the threaded sleeve 36 rotates continuously, it gradually disengages from the outside of the first external thread 12 until it is completely separated from the main housing 11. At this time, the threaded sleeve 36 is continuously moved down until component 21 is completely removed from the bottom opening of the main housing 11. Compared with existing similar products, the structure is simple, effectively reducing the difficulty of production and assembly, thereby reducing production costs. At the same time, the sealing ring 35 can effectively seal the bottom opening of the main housing 11, thereby ensuring the sealing effect between the main housing 11 and the base plate 32.

[0037] It should also be noted that any content not described in detail in this specification is prior art known to those skilled in the art.

[0038] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. An improved capacitive proximity switch, characterized in that, include: A housing assembly for protecting internal components; Internal components; as well as A guide sealing mechanism, comprising a guide groove, a base plate, a rubber sleeve, a guide rod, a sealing ring, and a threaded sleeve; Multiple guide grooves are provided, and the multiple guide grooves are evenly opened on the bottom outer side of the main housing. The base plate and the rubber sleeve are fixedly sleeved on the outside of the cable from top to bottom. Multiple guide rods are provided, and the multiple guide rods are evenly fixedly installed on the top edge of the base plate and integrally formed with the base plate. The sealing ring is located on the bottom inner side of the four guide rods and fits against the top of the base plate. The threaded sleeve is rotatably sleeved on the outside of the base plate through the bearing and is connected to the main housing through the first external thread.

2. The improved capacitive proximity switch according to claim 1, characterized in that: The guide sealing mechanism also includes protective protrusions, and multiple protective protrusions are provided, which are evenly and fixedly disposed on the outside of the threaded sleeve.

3. The improved capacitive proximity switch according to claim 2, characterized in that: The housing assembly includes a main housing and a sealing cover, the sealing cover being located on top of the main housing.

4. The improved capacitive proximity switch according to claim 3, characterized in that: The housing assembly further includes a first external thread and a second external thread. The first external thread is located at the bottom of the outer side of the main housing, and the second external thread is located at the top of the outer side of the main housing. The second external thread is connected to the main housing through a sealing cap.

5. The improved capacitive proximity switch according to claim 4, characterized in that: The internal components include components and cables, with the components located inside the main housing and fixedly connected to the top of the cables.

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