Cylindrical capacitive sensor

Abstract

The utility model discloses a cylindrical capacitive sensor which comprises a capacitive sensor body, the outer side of the capacitive sensor body is provided with an external thread, the outer side of the capacitive sensor body is provided with a fastening nut, and the inner side of the fastening nut is provided with an internal thread matched with the external thread. The fastening nut and the capacitive sensor body are connected through threads. The fastening nut is provided with a reinforcing assembly, the reinforcing assembly comprises a mounting groove formed in the top of the fastening nut, and the mounting groove is vertically and movably connected with a lifting ring. According to the cylindrical capacitive sensor, through the arrangement of the reinforcing assembly, the stability of the fastening nut can be improved after the fastening nut is installed and fastened, the cylindrical capacitive sensor is matched with a wrench for screwing the fastening nut, the abutting column is hidden when the wrench is sleeved, and the abutting column abuts against the installation position after the wrench is locked and loosened, so that the stability is improved, and a sealing line is ensured; extra operation is not needed, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the field of capacitive sensors, and particularly to a cylindrical capacitive sensor. Background Technique

[0002] The cylindrical capacitive sensor is a widely used capacitive sensor, and its working principle, characteristics and application fields are all relatively unique. The cylindrical capacitive sensor includes a cylindrical metal shell and two metal electrodes wound inside. The electrodes are isolated from each other and are at a certain distance from the measured target object. When an object approaches the electrode, it will affect the electric field, resulting in a change in capacitance. The change in capacitance is inversely proportional to the distance between the object and the electrode. Therefore, the distance or position between the object and the electrode can be determined by measuring the change in capacitance.

[0003] At present, external threads are provided on the outer side of the cylindrical capacitive sensor, which are mainly used for screwing nuts during installation. In the prior art, when installing a capacitor, generally a nut is screwed on each side of the installation position, so as to be screwed and fastened from both sides. However, in some use scenarios, vibrations are likely to occur, and the threaded connection is prone to looseness, which not only affects the stability of the capacitor but also affects the sealing performance, and further affects the use.

[0004] Therefore, it is very necessary to propose a cylindrical capacitive sensor to solve the above problems. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a cylindrical capacitive sensor, which can effectively solve the problems in the background technique.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A cylindrical capacitive sensor, comprising a capacitive sensor body, an external thread is provided on the outer side of the capacitive sensor body, a fastening nut is provided on the outer side of the capacitive sensor body, and an internal thread adapted to the external thread is provided on the inner side of the fastening nut, so that the fastening nut and the capacitive sensor body are connected by threads;

[0008] The locking nut is provided with a reinforcing assembly, which includes a mounting groove arranged at the top of the locking nut, the mounting groove being vertically movably connected with a lifting ring, a force-bearing groove being provided at the bottom of the lifting ring, a through groove corresponding to the force-bearing groove being provided on the side of the locking nut, a driving slider being laterally movably connected with the through groove, and one end of the driving slider is matched with the inner wall inclined surface of the force-bearing groove, and is configured so that the lifting ring moves upward when the driving slider moves in the axial direction of the locking nut, a spring is vertically arranged on the top of the lifting ring, so that the spring is compressed when the lifting ring moves upward, a resistance column is vertically arranged on the bottom of the lifting ring, and the bottom of the resistance column protrudes from the bottom of the locking nut when the spring is in an initial state, and an arc-shaped force-bearing protrusion is arranged on the side of the driving slider away from the mounting groove, and the force-bearing protrusion is used to cooperate with the wrench, and the force-bearing protrusion protrudes from the side wall of the locking nut when the spring is in an initial state.

[0009] Preferably, the number of the through slots is the same as the number of the side walls of the fastening nut and corresponds one to one.

[0010] Preferably, a cover plate for covering the mounting groove is fixedly disposed on the top of the fastening nut, and the upper end of the spring is fixedly disposed on the bottom of the cover plate.

[0011] Preferably, a stop bar for blocking the driving slider is fixedly provided at one end of the inner side of the through slot away from the mounting slot, and a notch corresponding to the stop bar is provided at one end of the driving slider away from the mounting slot.

[0012] Preferably, the bottom of the fastening nut is evenly provided with through holes corresponding to the interference columns one by one, and the interference columns are movably connected to the through holes.

[0013] Preferably, it also includes a rolling component, which includes blind holes evenly arranged at the bottom of the fastening nut, and fixed blocks are symmetrically arranged at both ends of the inner side of the blind hole, and arc grooves are symmetrically arranged on opposite sides of the two fixed blocks on the inner side of each blind hole, and the arc grooves are movably connected with balls, and the bottom of the balls protrudes from the bottom of the fastening nut.

[0014] Compared with the prior art, the utility model provides a cylindrical capacitive sensor, which has the following beneficial effects:

[0015] The cylindrical capacitive sensor can increase the stability of the fastening nut after installation and tightening the fastening nut through the reinforcement component, cooperate with the wrench for screwing the fastening nut, hide the abutment column when the wrench is installed, and abut against the installation position after locking and loosening the wrench, which not only increases the stability but also ensures the sealing line. No additional operation is required and it is easy to use. The stop bar is convenient for limiting the driving slider and preventing it from escaping from the through groove.

[0016] The cylindrical capacitive sensor can reduce friction during installation and fastening through the provided rolling components, changing sliding friction to rolling friction, and greatly reducing the wear when the fastening nut and the installation part come into contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of the present utility model;

[0018] Figure 2 is a schematic structural view of the fastening nut of the present utility model;

[0019] Figure 3 is a schematic structural view of the exploded fastening nut of the present utility model;

[0020] Figure 4 is the present utility model Figure 3 a schematic structural view from another perspective based on the present utility model;

[0021] Figure 5 is a schematic structural view of the present utility model in the cooperating state of the driving slider and the lifting ring;

[0022] Figure 6 is a schematic structural view of the disassembled state of the fixed block and the ball of the present utility model.

[0023] In the figures: 1, capacitive sensor body; 2, external thread; 3, fastening nut; 4, cover plate; 5, internal thread; 6, force - receiving protrusion; 7, installation groove; 8, through - slot; 9, lifting ring; 10, retaining strip; 11, spring; 12, arc - shaped groove; 13, driving slider; 14, fixed block; 15, abutting column; 16, blind hole; 17, through - hole; 18, notch; 19, force - receiving groove; 20, ball. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] As Figures 1-6 shown, the cylindrical capacitive sensor includes a capacitive sensor body 1. An external thread 2 is provided on the outer side of the capacitive sensor body 1. A fastening nut 3 is provided on the outer side of the capacitive sensor body 1, and an internal thread 5 adapted to the external thread 2 is provided on the inner side of the fastening nut 3. Thus, the fastening nut 3 and the capacitive sensor body 1 are connected by threads;

[0026] Different from the prior art, a reinforcing component is provided on the fastening nut 3, and the reinforcing component includes a mounting groove 7 arranged at the top of the fastening nut 3, and the mounting groove 7 is vertically movably connected with a lifting ring 9, and a force groove 19 is provided at the bottom of the lifting ring 9, and a through groove 8 corresponding to the force groove 19 is provided on the side of the fastening nut 3. The number of through grooves 8 is the same as the number of side walls of the fastening nut 3 and corresponds one to one. The through groove 8 is laterally movably connected with a driving slider 13, and one end of the driving slider 13 cooperates with the inner wall inclined surface of the force groove 19, and is configured so that the lifting ring 9 moves upward when the driving slider 13 moves in the axial direction of the fastening nut 3. A spring 11 is vertically provided on the top of the lifting ring 9, and the top of the fastening nut 3 is fixed. A cover plate 4 for covering the mounting groove 7 is fixedly provided on the bottom, and the upper end of the spring 11 is fixedly provided on the bottom of the cover plate 4, so that the spring 11 is compressed when the lifting ring 9 moves upward, and a resistance column 15 is vertically provided on the bottom of the lifting ring 9, and the bottom of the fastening nut 3 is evenly provided with through holes 17 corresponding to the resistance columns 15, and the resistance columns 15 are movably connected with the through holes 17, and the bottom of the resistance column 15 protrudes from the bottom of the fastening nut 3 in the initial state of the spring 11, and an arc-shaped force-bearing protrusion 6 is provided on the side of the driving slider 13 away from the mounting groove 7, and the force-bearing protrusion 6 is used to cooperate with the wrench, and the force-bearing protrusion 6 protrudes from the side wall of the fastening nut 3 in the initial state of the spring 11.

[0027] Furthermore, a stop bar 10 for blocking the driving slider 13 is fixedly provided at one end of the inner side of the through slot 8 away from the mounting slot 7 , and a notch 18 corresponding to the stop bar 10 is provided at one end of the driving slider 13 away from the mounting slot 7 .

[0028] Furthermore, it also includes a rolling component, which includes blind holes 16 evenly arranged at the bottom of the fastening nut 3, and fixed blocks 14 are symmetrically arranged at both ends of the inner side of the blind hole 16. The two fixed blocks 14 on the inner side of each blind hole 16 are symmetrically arranged on the opposite side of the arc groove 12, and the arc groove 12 is movably connected with a ball 20, and the bottom of the ball 20 protrudes from the bottom of the fastening nut 3.

[0029] It should be noted that the utility model is a cylindrical capacitance sensor. When the capacitance sensor body 1 is inserted into place, the two fastening nuts 3 are respectively threadedly connected to the outer sides of the upper and lower ends of the capacitance sensor body 1, and the fastening nuts 3 are screwed so that the two fastening nuts 3 are close to each other and fastened to the two sides of the installation position. When the wrench is set on the outer side of the fastening nuts 3, it will conflict with one of the pairs of oppositely arranged force-bearing protrusions 6, and then the force-bearing protrusions 6 are driven by the pressure of the wrench to drive the driving slider 13 to move inward, and the driving slider 13 is inclined with the force-bearing groove 19. The surfaces are matched, so that the lifting ring 9 moves upward and compresses the spring 11, and then the bottom of the abutment column 15 is hidden in the through hole 17. When the fastening nut 3 is tightened and the wrench is loosened, the spring 11 is reset, and then the abutment column 15 will come into conflict with the installation part. Under the directional force, the pressure between the external thread 2 and the internal thread 5 increases, which can greatly reduce the possibility of loosening. Moreover, when contact is made when tightened to the installation part, the ball 20 can directly contact it. As the fastening nut 3 rotates, the ball 20 rolls, which reduces friction and reduces damage.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A cylindrical capacitive sensor, comprising a capacitive sensor body (1), characterized in that: The outer side of the capacitive sensor body (1) is provided with an external thread (2), the outer side of the capacitive sensor body (1) is provided with a fastening nut (3), and the inner side of the fastening nut (3) is provided with an internal thread (5) adapted to the external thread (2), so that the fastening nut (3) and the capacitive sensor body (1) are connected via threads; The fastening nut (3) is provided with a reinforcement component, the reinforcement component comprising a mounting groove (7) arranged at the top of the fastening nut (3), the mounting groove (7) being vertically movably connected to a lifting ring (9), the bottom of the lifting ring (9) being provided with a force-bearing groove (19), the side of the fastening nut (3) being provided with a through groove (8) corresponding to the force-bearing groove (19), the through groove (8) being laterally movably connected to a driving slider (13), one end of the driving slider (13) being matched with the inner wall inclined surface of the force-bearing groove (19), and being configured so that the driving slider (13) is lifted when it moves in the axial direction of the fastening nut (3). The lowering ring (9) moves upward, and a spring (11) is vertically arranged on the top of the lifting ring (9), so that the spring (11) is compressed when the lifting ring (9) moves upward. A resistance column (15) is vertically arranged on the bottom of the lifting ring (9), and the bottom of the resistance column (15) protrudes from the bottom of the fastening nut (3) when the spring (11) is in an initial state. An arc-shaped force-bearing protrusion (6) is arranged on the side of the driving slider (13) away from the mounting groove (7), and the force-bearing protrusion (6) is used for resisting and cooperating with a wrench, and the force-bearing protrusion (6) protrudes from the side wall of the fastening nut (3) when the spring (11) is in an initial state.

2. The cylindrical capacitive sensor according to claim 1, characterized in that: The number of the through slots (8) is the same as the number of the side walls of the fastening nut (3) and corresponds one to one.

3. The cylindrical capacitive sensor according to claim 1, characterized in that: A cover plate (4) for covering the mounting groove (7) is fixedly disposed on the top of the fastening nut (3), and the upper end of the spring (11) is fixedly disposed on the bottom of the cover plate (4).

4. The cylindrical capacitive sensor according to claim 1, characterized in that: A stop bar (10) for blocking the driving slider (13) is fixedly provided at one end of the inner side of the through slot (8) away from the mounting slot (7), and a notch (18) corresponding to the stop bar (10) is provided at one end of the driving slider (13) away from the mounting slot (7).

5. The cylindrical capacitive sensor according to claim 1, characterized in that: The bottom of the fastening nut (3) is evenly provided with through holes (17) corresponding one to one with the abutment columns (15), and the abutment columns (15) are movably connected to the through holes (17).

6. The cylindrical capacitive sensor according to claim 1, characterized in that: The invention also comprises a rolling assembly, wherein the rolling assembly comprises blind holes (16) uniformly arranged at the bottom of the fastening nut (3), fixing blocks (14) are symmetrically arranged at both ends of the inner side of the blind holes (16), and arc grooves (12) are symmetrically arranged on opposite sides of the two fixing blocks (14) inside each blind hole (16), and the arc grooves (12) are movably connected with balls (20), and the bottom of the balls (20) protrudes from the bottom of the fastening nut (3).

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