Dustproof sealing ring assembly for magnet polarity NPN output type sensor

Abstract

The utility model relates to NPN output type sensor technical field provides a magnet polarity NPN output type sensor dustproof seal ring subassembly, include: sensor main part still include: lead out subassembly, set up in the outer surface of sensor main part, wherein, lead out subassembly includes: mounting disc no. 1, set up in the outer surface of sensor main part, the outer surface of mounting disc no. 1 is provided with mounting disc no. 2, two groups of inner ring grooves are respectively seted up in the outer surface of mounting disc no. 1 and mounting disc no. 2, be favorable to quick to directional magnetic sheet and carry out dismounting, avoid the case of replacing whole lead out subassembly when the single or multiple directional magnetic sheet is damaged, be favorable to the cost saving, and the multiple directional magnetic sheet is located in the four around of sensor main part, presents radial arrangement, the extension direction of directional magnetic sheet is identical with the magnetic field induction axis of sensor main part detection end, is convenient for the outside stray magnetic field along the preset direction and leads out sensor detection area, avoids its interference N pole / S pole's identification accuracy.

Description

Technical Field

[0001] This utility model relates to the field of NPN output sensor technology, and in particular to a dustproof sealing ring assembly for a magnetic polarity NPN output sensor. Background Technology

[0002] The magnet polarity NPN output sensor is a sensor that combines magnet polarity detection function with NPN circuit output characteristics. It is mainly used to identify the N pole and S pole of a magnet and output the corresponding electrical signal through the NPN circuit.

[0003] In the prior art, such as Chinese Patent No. CN202320334799.2, this utility model discloses a sealing ring assembly with additional dustproof and drainage functions, relating to the field of wheel hub bearings. It includes an outer ring skeleton fixed to an outer ring and an inner ring skeleton fixed to an inner ring. The outer ring skeleton extends towards the flange side to form an extension section. The inner side of this extension section forms a cavity with the flange to accommodate mud and water. The end of the extension section is turned outward to form a dustproof surface. Rubber A is covered on the surface of the outer ring skeleton facing the inner ring skeleton, and rubber A has several lips that cooperate with the inner ring skeleton for sealing. Rubber B is covered near the outer ring of the inner ring skeleton, and rubber B has a guide lip. This utility model adopts a gap sealing design between the dustproof surface and the flange surface, ensuring a dustproof sealing effect without increasing the product torque. The guide lip and drainage hole design allow for rapid drainage of mud and water, reducing the probability of early water ingress failure of the wheel hub bearing. The integrated design reduces the number of pressing operations and improves production efficiency.

[0004] While the above-mentioned solution has the advantages mentioned above, its disadvantage is that the environment in which the magnetic polarity NPN output sensor is used may have an interfering magnetic field formed by the accumulation of ferromagnetic dust, which will cause the polarity detection signal to drift and interfere with the identification accuracy of the N pole / S pole. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the existing technology where the use environment of magnetic polarity NPN output sensors is affected by the interference magnetic field formed by the accumulation of ferromagnetic dust, which causes the polarity detection signal to drift and interferes with the identification accuracy of the N pole / S pole.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a dustproof sealing ring assembly for a magnetic polarity NPN output sensor, comprising: a sensor body, and further comprising:

[0007] An export component is disposed on the outer surface of the sensor body, wherein the export component includes:

[0008] Mounting disk one is disposed on the outer surface of the sensor body, and mounting disk two is disposed on the outer surface of mounting disk one;

[0009] Two sets of inner annular grooves are respectively formed on the outer surfaces of mounting plate one and mounting plate two;

[0010] Two sets of outer ring grooves are respectively formed on the outer surfaces of mounting plate one and mounting plate two;

[0011] A fixing component is disposed on the inner wall of mounting plate one and mounting plate two.

[0012] Preferably, the export component further includes:

[0013] Multiple directional magnetic sheets are disposed at one end on the inner wall of the two sets of inner annular grooves, and the other end of the multiple directional magnetic sheets is disposed on the inner wall of the two sets of outer annular grooves.

[0014] Nut 1 is threaded onto the outer surface of the sensor body, and a shock-absorbing pad is provided on the outer surface of Nut 1.

[0015] Nut 2 is threaded onto the outer surface of the sensor body, and the outer surface of nut 2 is set on the outer surface of the shock-absorbing pad.

[0016] The technical effect of adopting the above-mentioned further solution is that: Nut 1 is close to the output component and presses the output component to be fixed on the outer surface of other objects; Nut 2 rotates and drives the shock-absorbing pad to press on the outer surface of Nut 1, which facilitates the enhancement of the stability of the directional magnetic sheet and the sealing gasket installation.

[0017] Preferably, the outer surface of the sensor body is provided with a sealing gasket, and the outer surface of the sealing gasket is provided with a plurality of labyrinth grooves.

[0018] The technical effects of adopting the above-mentioned further solution are: the labyrinth groove is designed to prevent dust from entering through physical gaps, thereby further improving the sealing performance. At the same time, the labyrinth groove is filled with silicone rubber modified with nano-sized ferrite powder. The ferrite powder can easily adsorb tiny ferromagnetic particles, preventing them from accumulating at the detection end of the sensor body and forming an interference source.

[0019] Preferably, the fixing component includes:

[0020] Multiple circular holes are formed on the outer surface of the mounting plate.

[0021] Multiple avoidance grooves are formed on the outer surface of the second mounting plate, and the inner walls of the multiple avoidance grooves are provided with two round holes.

[0022] The technical advantage of adopting the above-mentioned further solution is that the diameters of the first and second round holes are the same, which makes it easier for the two to be used together.

[0023] Preferably, the inner walls of the plurality of avoidance grooves are provided with mounting plates, and the outer surfaces of the plurality of mounting plates are fixedly mounted with limit rods.

[0024] The technical effect of adopting the above-mentioned further solution is that the mounting plate is movably installed in the avoidance groove, which makes it easy to ensure that there are no protrusions on the outer surface of the second mounting plate, and helps to increase the contact area between the second mounting plate and the first nut.

[0025] Preferably, a second limiting rod is fixedly installed on the outer surface of each of the plurality of mounting plates, and the outer surface of each of the plurality of limiting rods slides in contact with the inner wall of the first and second circular holes, respectively.

[0026] The technical effect of adopting the above-mentioned further solution is that the mounting plate and the limiting rod are fixedly connected, which facilitates the enhancement of the stability between the two.

[0027] Preferably, the outer surfaces of the plurality of limiting rods 2 are in sliding contact with the inner walls of the first and second circular holes, respectively.

[0028] The technical effect of adopting the above-mentioned further solution is that when the limiting rod 2 moves, it slides in contact with the inner walls of the first and second round holes, which facilitates the outer surface of the limiting rod 2 to fit against the inner walls of the first and second round holes, thereby enhancing the stability of the contact between the three.

[0029] Preferably, the ends of the plurality of limiting rods one and two that are away from the mounting plate are all engaged on the outer surface of the mounting plate one, and the limiting rods one and two do not contact each other without the action of external force.

[0030] The technical effect of adopting the above-mentioned further solution is that the limiting rod one and the limiting rod two do not contact each other when no external force is applied, which makes it easier to enhance the stability of the limiting rod one and the limiting rod two in restricting the mounting plate one and the mounting plate two.

[0031] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0032] 1. In this utility model, it is beneficial to quickly disassemble and assemble the directional magnetic sheet, avoiding the need to replace the entire output assembly when one or more directional magnetic sheets are damaged, which helps to save costs. Multiple directional magnetic sheets are located around the sensor body and arranged radially. The extension direction of the directional magnetic sheet is consistent with the magnetic field sensing axis of the sensor body's detection end, which facilitates the output of external stray magnetic fields along the preset direction to the sensor detection area, avoiding interference with the identification accuracy of the N pole / S pole.

[0033] 2. In this utility model, the operator holds the mounting plate and pulls it to easily pull out the first and second limiting rods from the first and second round holes and the avoidance groove, thereby releasing the restriction on the first and second mounting plates and making it easy to separate the first and second mounting plates. This facilitates the removal of the directional magnetic sheets in the inner and outer ring grooves. At the same time, if the first or second mounting plate is damaged, it can be replaced separately, which helps to reduce maintenance costs. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a dustproof sealing ring assembly for a magnetic polarity NPN output sensor proposed in this utility model;

[0035] Figure 2 This is a partial cross-sectional view of a dustproof sealing ring assembly for a magnetic polarity NPN output sensor proposed in this utility model.

[0036] Figure 3 This is a partial unfolded structural diagram of a dustproof sealing ring assembly for a magnetic polarity NPN output sensor proposed in this utility model;

[0037] Figure 4 This invention provides a dustproof sealing ring assembly for a magnetic polarity NPN output sensor. Figure 2 Enlarged structural diagram at point A in the middle.

[0038] Legend:

[0039] 1. Sensor body; 2. Nut 1; 3. Shock-absorbing pad; 4. Nut 2; 5. Mounting plate 1; 501. Round hole 1; 6. Mounting plate 2; 601. Avoidance groove; 602. Round hole 2; 603. Mounting plate; 604. Limiting rod 1; 605. Limiting rod 2; 7. Inner ring groove; 8. Outer ring groove; 9. Sealing gasket; 901. Labyrinth groove; 10. Directional magnetic sheet. Detailed Implementation

[0040] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0042] Example 1, such as Figure 1-4As shown, this utility model provides a dustproof sealing ring assembly for a magnetic polarity NPN output sensor, including: a sensor body 1, and further including:

[0043] An export component is disposed on the outer surface of the sensor body 1, wherein the export component includes:

[0044] Mounting disk 1, 5, is set on the outer surface of sensor body 1, and mounting disk 2, 6, is set on the outer surface of mounting disk 1, 5;

[0045] Two sets of inner ring grooves 7 are respectively opened on the outer surfaces of mounting plate one 5 and mounting plate two 6;

[0046] Two sets of outer ring grooves 8 are respectively opened on the outer surfaces of mounting plate 1 5 and mounting plate 2 6;

[0047] The fixing components are installed on the inner walls of mounting plate 1 (5) and mounting plate 2 (6).

[0048] The exported components also include:

[0049] Multiple directional magnetic sheets 10 are disposed at one end on the inner wall of two sets of inner annular grooves 7, and the other end of the multiple directional magnetic sheets 10 is disposed on the inner wall of two sets of outer annular grooves 8.

[0050] Nut 12 is threaded onto the outer surface of sensor body 1, and shock-absorbing pad 3 is provided on the outer surface of nut 12.

[0051] Nut 2 4 is threaded onto the outer surface of sensor body 1, and the outer surface of nut 2 4 is set on the outer surface of shock-absorbing pad 3.

[0052] A sealing gasket 9 is provided on the outer surface of the sensor body 1, and multiple labyrinth grooves 901 are provided on the outer surface of the sealing gasket 9.

[0053] In this embodiment, the directional magnetic sheets 10 are movably installed on the inner walls of the inner ring groove 7 and the outer ring groove 8. This helps prevent the directional magnetic sheets 10 from shaking. At the same time, when faced with the issue of the service life of the directional magnetic sheets 10, it is convenient to quickly disassemble and assemble the directional magnetic sheets 10, avoiding the need to replace the entire output assembly when one or more directional magnetic sheets 10 are damaged, which helps to save costs. The multiple directional magnetic sheets 10 are located around the sensor body 1 and are arranged radially. The extension direction of the directional magnetic sheets 10 is consistent with the magnetic field sensing axis of the detection end of the sensor body 1, which facilitates the output of external stray magnetic fields along the preset direction to the sensor detection area, avoiding interference with the identification accuracy of the N pole / S pole.

[0054] Example 2, as Figure 1-4 As shown, the fixing components include:

[0055] Multiple round holes 501 are formed on the outer surface of the mounting plate 5;

[0056] Multiple avoidance grooves 601 are formed on the outer surface of the mounting plate 2 6, and the inner wall of each of the multiple avoidance grooves 601 is provided with a round hole 2 602.

[0057] The inner walls of multiple avoidance grooves 601 are provided with mounting plates 603, and the outer surfaces of multiple mounting plates 603 are fixedly installed with limit rods 604.

[0058] Limiting rods 605 are fixedly installed on the outer surfaces of multiple mounting plates 603, and the outer surfaces of multiple limiting rods 604 slide in contact with the inner walls of the first round hole 501 and the second round hole 602, respectively.

[0059] The outer surfaces of the multiple limiting rods 605 slide in contact with the inner walls of the first round hole 501 and the second round hole 602, respectively.

[0060] The ends of the multiple limiting rods 604 and 605 away from the mounting plate 603 are all locked on the outer surface of the mounting disc 5. The limiting rods 604 and 605 do not contact each other without external force.

[0061] In this embodiment, the outer edges of the first limiting rod 604 and the second limiting rod 605 are engaged on the outer surface of the first mounting plate 5. The operator moves the first limiting rod 604 and the second limiting rod 605 relative to each other with their fingers, and then pushes the first limiting rod 604 and the second limiting rod 605 into the first circular hole 501. At this time, the mounting plate 603 extends out from the avoidance groove 601. The operator holds the mounting plate 603 and pulls it to facilitate the removal of the first limiting rod 604 and the second limiting rod 605 from the first circular hole 501, the second circular hole 602, and the avoidance groove 601, thereby releasing the restriction on the first mounting plate 5 and the second mounting plate 6, making it easier to separate the first mounting plate 5 and the second mounting plate 6, and thus facilitating the removal of the directional magnetic sheet 10 in the inner ring groove 7 and the outer ring groove 8. At the same time, if the first mounting plate 5 or the second mounting plate 6 is damaged, it can be replaced separately, which helps to reduce maintenance costs.

[0062] Working principle: Before the sensor body 1 is installed on other objects, the export component is movably fitted onto the outer surface of the sensor body 1, so that the side of the sealing gasket 9 with the labyrinth groove 901 contacts the outer surface of the other object. At this time, the directional magnetic sheet 10 between mounting disc 1 5 and mounting disc 2 6 is located around the sensor body 1 and arranged radially. The extension direction of the directional magnetic sheet 10 is consistent with the magnetic field induction axis of the detection end of the sensor body 1. By rotating nut 1 2 and nut 2 4, the sensor body 1 is moved closer to the export component. The component is pressed and fixed to the outer surface of other objects. The rotation of nut 24 causes the shock-absorbing pad 3 to press against the outer surface of nut 12. During use, the operator passes the mounting plate 603 and limit rod 1 604 and limit rod 2 605 through the avoidance groove 601, the round hole 2 602 and the round hole 1 501 in sequence. After the end of limit rod 1 604 and limit rod 2 605 away from the mounting plate 603 passes through the round hole 1 501, the outer edge of limit rod 1 604 and limit rod 2 605 is stuck on the outer surface of mounting plate 15, and the mounting plate 603 is located inside the avoidance groove 601.

[0063] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A dustproof sealing ring assembly for a magnetic polarity NPN output sensor, comprising: The sensor body (1) is characterized in that it further includes: An export component is disposed on the outer surface of the sensor body (1), wherein the export component includes: Mounting disk one (5) is disposed on the outer surface of the sensor body (1), and mounting disk two (6) is disposed on the outer surface of mounting disk one (5). Two sets of inner ring grooves (7) are respectively opened on the outer surfaces of the first mounting plate (5) and the second mounting plate (6); Two sets of outer ring grooves (8) are respectively opened on the outer surfaces of the first mounting plate (5) and the second mounting plate (6); Fixing components are disposed on the inner walls of mounting plate one (5) and mounting plate two (6).

2. The dustproof sealing ring assembly for a magnetic polarity NPN output sensor according to claim 1, characterized in that: The export component also includes: Multiple directional magnetic sheets (10) are disposed at one end on the inner wall of the two sets of inner annular grooves (7), wherein the other end of the multiple directional magnetic sheets (10) is disposed on the inner wall of the two sets of outer annular grooves (8). Nut 1 (2) is threaded to the outer surface of the sensor body (1), and a shock-absorbing pad (3) is provided on the outer surface of the nut 1 (2). Nut 2 (4) is threaded onto the outer surface of the sensor body (1), and the outer surface of nut 2 (4) is set on the outer surface of the shock-absorbing pad (3).

3. The dustproof sealing ring assembly for a magnetic polarity NPN output sensor according to claim 2, characterized in that: The outer surface of the sensor body (1) is provided with a sealing gasket (9), and the outer surface of the sealing gasket (9) is provided with a plurality of labyrinth grooves (901).

4. The dustproof sealing ring assembly for a magnetic polarity NPN output sensor according to claim 3, characterized in that: The fixing component includes: Multiple circular holes (501) are formed on the outer surface of the mounting plate (5); Multiple avoidance grooves (601) are formed on the outer surface of the mounting plate 2 (6), wherein the inner wall of each of the multiple avoidance grooves (601) is provided with a round hole 2 (602).

5. The dustproof sealing ring assembly for a magnetic polarity NPN output sensor according to claim 4, characterized in that: The inner walls of the plurality of avoidance grooves (601) are provided with mounting plates (603), and the outer surfaces of the plurality of mounting plates (603) are fixedly installed with limit rods (604).

6. The dustproof sealing ring assembly for a magnetic polarity NPN output sensor according to claim 5, characterized in that: Limiting rods two (605) are fixedly installed on the outer surfaces of multiple mounting plates (603), and the outer surfaces of multiple limiting rods one (604) slide in contact with the inner walls of the first round hole (501) and the second round hole (602), respectively.

7. A dustproof sealing ring assembly for a magnetic polarity NPN output sensor according to claim 6, characterized in that: The outer surfaces of the plurality of limiting rods (605) slide in contact with the inner walls of the first round hole (501) and the second round hole (602), respectively.

8. The dustproof sealing ring assembly for a magnetic polarity NPN output sensor according to claim 7, characterized in that: The ends of the first (604) and the second (605) of the plurality of limiting rods away from the mounting plate (603) are all locked on the outer surface of the first (5) mounting plate, and the first (604) and the second (605) do not contact each other without the action of external force.

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