A sensor structure

Abstract

The utility model relates to sensor technical field, especially a kind of sensor structure, including sensor body and the peripheral sleeve of the cylindrical protective sleeve of the sensor body close to detection end part and the rear end connection of the protective sleeve can be moved in the sensor body periphery front and back adjustment and can be locked loose tight component, better versatility.

Description

Technical Field

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

[0002] In today's society, sensors are used across all industries, especially in industrial manufacturing, such as automobile production. The types and structures of sensors are incredibly diverse, and the number of patented technologies is countless.

[0003] For example, Chinese Patent Application No. 202320485619.0 discloses a proximity switch with a protective device. The proximity switch includes a switch protection structure and a proximity switch body. The proximity switch body is installed and enclosed inside the switch protection structure. The proximity switch body has external threads on its exterior and a proximity switch status light at its tail. The switch protection structure includes the device, which includes a protective sleeve, a protective cover, and a proximity switch bracket assembly. The protective sleeve is threaded to the tail of the protective cover via a union joint. The protective cover has internal threads that connect to the external threads of the proximity switch body. The proximity switch bracket assembly is fitted under the protective cover.

[0004] For example, Chinese Patent Application No. 201620701388.2 discloses an optical fiber sensor with a protective sleeve, including an optical fiber line (1) and a detection probe (2) connected to the optical fiber line (1). The sensor is characterized in that: a protective sleeve (3) is provided at the connection between the optical fiber line (1) and the detection probe (2), a groove (4) is provided at one end of the protective sleeve (3), and a protrusion that matches the groove (4) on the protective sleeve (3) is provided at the end of the detection probe (2) connected to the optical fiber line (1). One end of the protective sleeve (3) is embedded in the detection probe (2).

[0005] Existing sensors with cylindrical or near-cylindrical structures are beginning to use external protection structures, but the structures vary considerably, and the installation methods also differ significantly. Utility Model Content

[0006] The purpose of this invention is to provide a sensor structure with better versatility.

[0007] The above-mentioned objective of this utility model is achieved through the following technical solution: a sensor structure, including a sensor body, a cylindrical protective sleeve sleeved around the periphery of the sensor body near the detection end, and a tensioning component connected to the rear end of the protective sleeve that can move back and forth around the sensor body and can be locked and loosened.

[0008] As a preferred embodiment of this utility model, the tensioning component includes a tensioning sleeve that extends sequentially and can be fitted around the sensor body, integrally connected to the rear end of the protective sleeve, and a tensioning drive outer control sleeve disposed around the tensioning sleeve.

[0009] As a preferred embodiment of this utility model, the elastic sleeve includes a cylindrical base sleeve integrally connected to the rear end of the protective sleeve and an elastic actuating sleeve with an inner cylindrical surface and an outer conical surface. The base sleeve and the elastic actuating sleeve are provided with a plurality of elastic forming slots extending forward from the rear end of the elastic actuating sleeve and entering the base sleeve. The elastic forming slots are multiple and are distributed circumferentially at intervals on the base sleeve and the elastic actuating sleeve.

[0010] As a preferred embodiment of this utility model, the outer control sleeve for tightening and loosening has a cylindrical assembly hole that is connected front and back and a conical tightening hole that cooperates with the tightening and loosening actuator sleeve to tighten and loosen. The outer periphery of the base sleeve has an external thread, and the wall of the assembly hole has an internal thread. The base sleeve is connected to the assembly hole by a threaded connection.

[0011] As a preferred embodiment of this utility model, the outer wall of the tensioning drive outer control sleeve is also integrally connected with a hexagonal drive nut ring.

[0012] As a preferred embodiment of this utility model, the tightening hole is a conical shape with the diameter gradually decreasing from front to back, the outer ring surface of the tightening actuator is a conical shape with the diameter gradually decreasing from front to back, and the front-to-back length of the outer ring surface of the tightening actuator is greater than the front-to-back length of the tightening hole.

[0013] As a preferred embodiment of this invention, the thickness of the base sleeve is less than the thickness of the protective sleeve.

[0014] As a preferred embodiment of this invention, the protective sleeve is integrally connected with a limiting ring for front and rear positioning at the rear position.

[0015] As a preferred embodiment of this utility model, the outer wall of the protective sleeve is formed with external threads and is provided with a plurality of assembly nuts arranged in a front-to-back pattern surrounding the periphery of the protective sleeve.

[0016] As a preferred embodiment of this utility model, the outer wall of the sensor body near the detection end has an external thread, the inner wall of the protective sleeve has an internal thread, the protective sleeve is assembled around the sensor body near the detection end via a threaded connection, and the outer periphery of the limiting ring is hexagonal.

[0017] The beneficial effects of this utility model are: it is suitable for the assembly and use of various cylindrical sensors, has better versatility, is more flexible in use, has guaranteed protection, is easy to adjust, and is also convenient to assemble and position with structures such as positioning brackets. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the sensor structure in the embodiment;

[0019] Figure 2 yes Figure 1 A three-dimensional structural diagram of the structure in use;

[0020] Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure from a frontal perspective;

[0021] Figure 4 yes Figure 2 The right view of the structure cut open from top to bottom along the front and back axes;

[0022] Figure 5 yes Figure 2 A three-dimensional structural diagram after the outer control sleeve for the tension drive is removed from the structure;

[0023] Figure 6 yes Figure 2 A three-dimensional structural diagram of the protective sleeve and elastic sleeve in the middle;

[0024] Figure 7 yes Figure 6 A schematic diagram of the three-dimensional structure from a frontal perspective;

[0025] Figure 8 yes Figure 2 A three-dimensional structural diagram of the tension drive outer control sleeve in the middle;

[0026] Figure 9 yes Figure 6 medium structure and Figure 8 A schematic diagram of the three-dimensional structure after the middle structure is assembled. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present utility model.

[0029] Examples, such as Figure 1-9As shown, a sensor structure includes a sensor body 1 and a cylindrical protective sleeve 2 fitted around the periphery of the sensor body 1 near the detection end 10. A tensioning component is connected to the rear end of the protective sleeve 2, allowing it to move back and forth around the sensor body 1 and to be locked and released. The sensor body 1 in this application is primarily a cylindrical or near-cylindrical sensor, such as a proximity switch, electromagnetic sensor, or acoustic-optical sensor. The protective sleeve 2 can be made of steel or hard plastic. In this embodiment, the sensor body 1 is described as extending in the front-to-back reference direction. The detection end 10 of the sensor body 1 is at the front end as a basic reference position, and the rear end of the sensor body 1 is at the rear. The protective sleeve 2 extends front and back. The cylindrical shape of the protective sleeve 2 is an integral shape, with a circular structure in the front-to-back projection direction. Because the inner or outer walls of the protective sleeve 2 may have threads or holes, its overall shape can be understood as cylindrical. The part closest to the detection end needs the most protection and also involves some installation issues. Using a tensioning component on the rear side for position adjustment and locking / loosening is more reasonable.

[0030] Preferably, the tensioning assembly includes a tensioning sleeve 3 integrally connected to the rear end of the protective sleeve 2, extending sequentially and capable of covering the periphery of the sensor body 1, and a tensioning drive outer control sleeve 4 disposed around the tensioning sleeve 3. The tensioning sleeve 3 is directly fitted onto the outer wall of the sensor body 1, and the tightness is adjusted by the degree of contact between the two, facilitating locking, fixing, loosening, and disassembly. The tensioning drive outer control sleeve 4 is fitted around the tensioning sleeve 3 and is used to control the tightness between the tensioning sleeve 3 and the outer wall of the sensor body 1. The specific structural design is as follows:

[0031] The tightening sleeve 3 includes a cylindrical base sleeve 31 integrally connected to the rear end of the protective sleeve 2, and a tightening actuating sleeve 32 with an inner cylindrical surface and an outer conical surface. The cylindrical shape of the base sleeve 31 is also the overall cylindrical or near-cylindrical shape, and its projection in the front-to-back direction is circular, because the surface of the base sleeve 31 is also optimized to form some threads, etc. The tightening actuating sleeve 32 is a conical sleeve. More importantly, the base sleeve 31 and the tensioning / loosening sleeve 32 are provided with a plurality of elastically forming grooves 30 extending forward from the rear end of the tensioning / loosening sleeve 32 and into a portion of the base sleeve 31. The elastically forming grooves 30 axially pass through the tensioning / loosening sleeve 32 and into a portion of the base sleeve 31, and radially penetrate both the tensioning / loosening sleeve 32 and the base sleeve 31. It can be understood that the tensioning / loosening sleeve 32 is a discrete sleeve, but its front end is integrally connected to the rear end of the base sleeve 31. Due to the design of the elastically forming grooves 30, the tensioning / loosening sleeve 32 and the base sleeve 31 have the ability to elastically deform, thus facilitating tensioning / loosening. The tensioning / loosening sleeve 32, in particular, has a greater deformation capacity, so this part serves as the main tensioning / loosening mechanism. Further preferably, there are multiple elastically forming grooves 30 distributed circumferentially at intervals on the base sleeve 31 and the tensioning / loosening sleeve 32, making the overall tensioning / loosening distribution more uniform.

[0032] Preferably, the tensioning drive outer control sleeve 4 has a cylindrical mounting hole 41 that is connected front to back, and a conical tensioning hole 42 that mates with the tensioning actuator sleeve 32 for tightening and loosening. The cylindrical shape of the mounting hole 41 means that its projection in the front-back direction is circular, and the actual hole wall is also optimized with threads. The tensioning hole 42 is a conical hole for tightening. Furthermore, the outer wall of the base sleeve 31 has external threads, and the hole wall of the mounting hole 41 has internal threads. The base sleeve 31 mates with the mounting hole 41 through a threaded connection. That is, the tensioning drive outer control sleeve 4 is assembled by screwing the internal thread of the mounting hole 41 with the external thread of the outer wall of the base sleeve 31. The two move relative to each other in the front-back direction and mate internally and externally. The taper of the tensioning hole 42 should be consistent with the taper of the tapered surface 320 on the outer wall of the tensioning actuator sleeve 32. However, the maximum diameter of the tapered surface 320 should be greater than the maximum diameter of the tensioning hole 42. When the tensioning drive outer control sleeve 4 is turned forward clockwise, the mounting hole 41 is threadedly connected to the base sleeve 31 and moves forward. The tensioning hole 42 moves forward and gradually expands the tensioning actuator sleeve 32 radially, thereby achieving tensioning fixation. If the knob is turned backward counterclockwise, the tensioning drive outer control sleeve 4 moves backward relative to the tensioning sleeve 3, the tension is eliminated, and it is in a relaxed state. The mounting hole 41 will also detach from the base sleeve 31, thereby achieving the separation of the tensioning sleeve 3 and the tensioning drive outer control sleeve 4.

[0033] Furthermore, the outer wall of the tightening drive outer control sleeve 4 is also integrally connected with a hexagonal drive nut ring 40. The hexagonal drive nut ring 40 is a hexagonal outer ring that can be used as a nut, meaning it can be tightened using a wrench.

[0034] Furthermore, the tightening hole 42 has a tapered shape with its diameter gradually decreasing from front to back, and the outer ring surface of the tightening actuator sleeve 32 also has a tapered shape with its diameter gradually decreasing from front to back. The front-to-back length of the outer ring surface of the tightening actuator sleeve 32 is greater than the front-to-back length of the tightening hole 42. This allows for more effective tightening and loosening. In addition, the maximum diameter of the tapered surface of the outer ring of the tightening actuator sleeve 32 is less than or equal to the outer diameter of the base sleeve 31, while the maximum diameter of the tightening hole 42 is less than or equal to the diameter of the assembly hole 41. This makes assembly and tightening smoother.

[0035] Preferably, the thickness of the base sleeve 31 is less than the thickness of the protective sleeve 2. The protective sleeve 2 is for protection and should be as thick as possible. The thickness of the base sleeve 31 and the tightening / uneasing sleeve 32 should be as small as possible, because they are mainly for tightening and loosening and need to have a certain deformation capacity. Generally, the thickness of the protective sleeve 2 is preferably about 2 to 5 times the thickness of the base sleeve 31. The thickness of the protective sleeve 2 is generally sufficient when controlled at about 5 mm. Of course, it can be selected according to different sensors.

[0036] Preferably, the protective sleeve 2 is integrally connected with a limiting ring 5 at its rear position for front and rear positioning. The limiting ring 5 restricts the position of some mounting structures at the front and rear. For example, if the elastic sleeve 3 is installed forward to a certain extent, it will be blocked by the limiting ring 5. The limiting ring 5 is on the front side of the elastic sleeve 3. If there is a structure design with mounting nuts 6 on the front side of the limiting ring 5, these mounting structures on the front side will be blocked by the limiting ring 5 when they move backward.

[0037] Furthermore, the outer wall of the protective sleeve 2 is formed with external threads and is provided with a plurality of assembly nuts 6 arranged in a front-to-back pattern surrounding the outer periphery of the protective sleeve 2. The design of the assembly nuts 6 is to install the sensor onto some tooling or production line brackets and other support and positioning structures. In this embodiment, the sensor body 1 together with the protective sleeve 2 can pass through the assembly holes of the aforementioned support and positioning structures, and then an assembly nut 6 is respectively arranged on the front and back sides of these assembly holes and screwed onto the outer wall of the protective sleeve 2, thereby realizing the assembly with these positioning structures.

[0038] Furthermore, the outer wall of the sensor body 1 near the detection end 10 has external threads. In many sensor designs, such as proximity switches, the outer wall has threads for mounting onto positioning structures. However, due to friction and other operating conditions, the outer surface deforms or wears down after a period of use, making reassembly difficult when moving to another detection location. In this embodiment, damage to the outer wall of the protective sleeve is not a problem because it can be replaced. Therefore, we designed the protective sleeve 2 with internal threads on its inner wall. The protective sleeve 2 is mounted on the outer threaded portion of the sensor body 1 near the detection end 10 via a threaded connection. In this way, the protective sleeve 2 serves both a protective function and an installation function, without damaging the threads on the outer wall of the sensor body 1. Moreover, the assembly stability is higher because the protective sleeve 2, along with the tensioning sleeve 3, can be stably mounted to the outer periphery of the sensor body 1 via a threaded connection before the tensioning drive outer control sleeve 4 is installed. This makes reuse and sensor relocation more flexible and feasible, the assembly is not very complex, and the protection is better. Then, after the sensor body 1 is connected to the protective sleeve 2, the tension sleeve 3 and the tension drive outer control sleeve 4, the rear end will also be connected to the connector 7 of the wire and other joint structures.

[0039] Based on this, the outer periphery of the limiting ring 5 is hexagonal, which makes the limiting ring 5 also function as a nut. It can be screwed on with a wrench or the like to complete the threaded connection with the sensor body 1.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A sensor structure, characterized in that, The sensor body (1) includes a cylindrical protective sleeve (2) fitted around the periphery of the part of the sensor body (1) near the detection end (10), and a tensioning component connected to the rear end of the protective sleeve (2) that can move back and forth around the periphery of the sensor body (1) and can be locked and loosened.

2. The sensor structure according to claim 1, characterized in that, The tensioning assembly includes a tensioning sleeve (3) that extends sequentially and can be fitted around the sensor body (1) at the rear end of the protective sleeve (2), and a tensioning drive outer control sleeve (4) provided around the tensioning sleeve (3).

3. The sensor structure according to claim 2, characterized in that, The elastic sleeve (3) includes a cylindrical base sleeve (31) integrally connected to the rear end of the protective sleeve (2) and an elastic actuating sleeve (32) with an inner cylindrical surface and an outer conical surface. The base sleeve (31) and the elastic actuating sleeve (32) are provided with a plurality of elastic forming slots (30) extending forward from the rear end of the elastic actuating sleeve (32) and entering the base sleeve (31). The elastic forming slots (30) are multiple and are distributed circumferentially at intervals on the base sleeve (31) and the elastic actuating sleeve (32).

4. A sensor structure according to claim 3, characterized in that, The tensioning drive outer control sleeve (4) has a cylindrical assembly hole (41) that is connected front and back, and a conical tensioning hole (42) that cooperates with the tensioning actuator sleeve (32) to tighten and loosen. The outer periphery of the base sleeve (31) has an external thread, and the wall of the assembly hole (41) has an internal thread. The base sleeve (31) is connected to the assembly hole (41) by a threaded connection.

5. A sensor structure according to claim 4, characterized in that, The outer wall of the tension drive outer control sleeve (4) is also integrally connected with a hexagonal drive nut ring (40).

6. A sensor structure according to claim 4, characterized in that, The tightening hole (42) has a tapered shape with the diameter gradually decreasing from front to back. The outer ring surface of the tightening actuator (32) has a tapered shape with the diameter gradually decreasing from front to back. The front-to-back length of the outer ring surface of the tightening actuator (32) is greater than the front-to-back length of the tightening hole (42).

7. A sensor structure according to claim 4, characterized in that, The thickness of the base sleeve (31) is less than the thickness of the protective sleeve (2).

8. A sensor structure according to claim 4, characterized in that, The protective sleeve (2) is integrally connected to a limiting ring (5) for front and rear limiting at the rear position.

9. A sensor structure according to claim 8, characterized in that, The outer wall of the protective sleeve (2) is formed with external threads and is provided with a number of assembly nuts (6) arranged in front and behind, surrounding the periphery of the protective sleeve (2).

10. A sensor structure according to claim 8, characterized in that, The outer wall of the sensor body (1) near the detection end (10) has an external thread, and the inner wall of the protective sleeve (2) has an internal thread. The protective sleeve (2) is assembled around the sensor body (1) near the detection end (10) by a threaded connection. The outer periphery of the limiting ring (5) is hexagonal.

Images